A catalyst researcher states that the diameters (in microns) of the pores in a new product catalyst she has made have an exponential distribution with parameter λ = 0.25. (a) Determine the mean pore size. (b) Determine the standard deviation of the pore diameters. (c) What proportion of the pores are less than 3.0 microns in diameter? (d) What proportion of the pores are greater than 11.0 microns in diameter? (e) What is the median pore diameter? (f) What is the third quartile of the pore distribution? (g) What is the 99th percentile of the pore diameters?

Answers

Answer 1

a) The mean pore size in this case is 1/0.25 = 4 microns.

b) The standard deviation of the pore diameters is also 1/0.25 = 4 microns.

c) The proportion of pores less than 3.0 microns is F(3.0) = 1 - e^(-0.25*3.0) = 0.427.

d) The proportion of pores greater than 11.0 microns is 1 - F(11.0) = e^(-0.25*11.0) = 0.083.

e) The median pore diameter in this case is ln(2)/0.25 = 2.7726 microns.

f)  The third quartile of the pore distribution in this case is ln(4)/0.25 = 5.5452 microns.

g) The 99th percentile of the pore diameters is -ln(1 - 0.99)/0.25 = 13.8621 microns.

How to find the mean pore size of the exponential distribution?

(a) The mean pore size of the exponential distribution with parameter λ is given by 1/λ. Therefore, the mean pore size in this case is 1/0.25 = 4 microns.

How to find the standard deviation of an exponential distribution?

(b) The standard deviation of an exponential distribution with parameter λ is given by 1/λ. Therefore, the standard deviation of the pore diameters is also 1/0.25 = 4 microns.

Calculate the proportion of the pores?

(c) The proportion of the pores that are less than 3.0 microns in diameter can be found by calculating the cumulative distribution function (CDF) of the exponential distribution at x = 3.0. The CDF of an exponential distribution with parameter λ is given by F(x) = 1 - e^(-λx). Therefore, the proportion of pores less than 3.0 microns is F(3.0) = 1 - e^(-0.25*3.0) = 0.427.

Calculate the proportion of the pores?

(d) The proportion of the pores that are greater than 11.0 microns in diameter can be found by subtracting the CDF of the exponential distribution at x = 11.0 from 1.0. Therefore, the proportion of pores greater than 11.0 microns is 1 - F(11.0) = e^(-0.25*11.0) = 0.083.

Find the median pore diameter?

(e) The median of an exponential distribution with parameter λ is given by ln(2)/λ. Therefore, the median pore diameter in this case is ln(2)/0.25 = 2.7726 microns.

Calculate the third quartile of an exponential distribution?

(f) The third quartile of an exponential distribution with parameter λ is given by ln(4)/λ. Therefore, the third quartile of the pore distribution in this case is ln(4)/0.25 = 5.5452 microns.

Calculate the 99th percentile of an exponential distribution?

(g) The 99th percentile of an exponential distribution with parameter λ is given by -ln(1 - 0.99)/λ. Therefore, the 99th percentile of the pore diameters is -ln(1 - 0.99)/0.25 = 13.8621 microns.

Learn more about exponential distribution

brainly.com/question/28235111

#SPJ11


Related Questions

Please help me pick which ones they are. Thank you!

Answers

The correct answer for the transformation will be:

translation up π/4

vertical stretch by 2

translation right π/4

How to explain the information

The parent function of g(x) is y = sin(x), and g(x) is obtained from the parent function by performing the following transformations:

Translation: The argument of sin(x) is shifted by π/4 units to the left, which results in a horizontal translation to the right by π/4 units.

Vertical stretch: The amplitude of the sine function is multiplied by 2, which results in a vertical stretch by a factor of 2.

Learn more about transformations on;

https://brainly.com/question/4289712

#SPJ1

What is the difference of the fractions 1/2-1 1/5

Answers

Answer:

-7/10

Step-by-step explanation:

1/2 = 5/10

1 1/5 = 6/5 = 12/10

5/10-12/10 = -7/10

7/10

im so smart so thats it right there im soooo good at math and stuff

a box with a square base and no top is to be made from a square piece of carboard by cutting 7 in. squares from each corner and folding up the sides. the box is to hold 2800 in3. how big a piece of cardboard is needed?

Answers

A square piece of cardboard with side length of 34 inches is needed to make the box.

Let the side of the square piece of cardboard be x inches.

After cutting out 7 inch squares from each corner, the dimensions of the base of the box will be (x-14) inches by (x-14) inches, and the height of the box will be 7 inches.

The volume of the box can be expressed as:

V = (x-14[tex])^2[/tex][tex]\times[/tex]7

We know that the box is to hold 2800 in3, so we can set up an equation:

(x-14[tex])^2[/tex][tex]\times[/tex] 7 = 2800

Simplifying and solving for x, we get:

(x-14[tex])^2[/tex] = 400

x-14 = ±20

x = 34 or x = 6

Since the cardboard cannot have a side length of less than 7+7=14 inches, the only valid solution is x=34 inches.

Therefore, a square piece of cardboard with side length of 34 inches is needed to make the box.

To learn more about  square piece  visit:  https://brainly.com/question/29983117

#SPJ11

Based on past musical productions, a theater predicts selling 400 - 8p tickets when each ticket is sold at p dollars.

Answers

We know this because the formula given in the problem statement predicts the number of tickets selling based on the ticket price, and the theater will only earn revenue when it sells more than 400 tickets.

a. It includes ticket price (dollars), number of tickets sold, revenue (dollars)

see image for table.

To complete the table, we start with the maximum expected number of tickets sold at a given price and subtract the expected decrease in ticket sales for every $1 increase in ticket price, until we reach the minimum expected number of tickets sold at a given price.

For example, at a ticket price of $5, the theater expects to sell 400-8(5) = 360 tickets. For every $1 increase in ticket price, the theater expects to sell 8 fewer tickets. Therefore, at a ticket price of $10, the theater expects to sell 400-8(10) = 320 tickets. Continuing in this manner, we can fill out the table as shown above.

b. The theater will earn no revenue when the ticket price is $50, because the expected number of tickets sold at that price is 50, which is less than the break-even point of 400 tickets.

Learn more about selling visit: brainly.com/question/25586322

#SPJ4

I showed one example of these facts using a truth table of somefunction as such:
A B C F1 F2 F1+F2 F1F2
0 0 0 0 1 1 1
0 0 1 1 1 1 1
0 1 0 0 0 0 0
0 1 1 1 0 1 1
1 0 0 0 1 1 1
1 0 1 1 1 1 1
1 1 0 0 0 0 0
1 1 1 1 0 1 1
Clearly shown is:
F1 = m1 + m3 +m5 + m7
F2 = m0 + m1 +m4 + m5
and
F1 + F2 = m0 +m1 + m3 + m4 + m5 +m7
and
F1F2 = m1 +m5
These support the statements shown, but are not proofs thereofbecause they are only an example. How would one prove this?

Answers

The given Boolean algebra expressions have been proven to be equivalent based on the properties of Boolean algebra.

To prove the statements, we can use the fact that any boolean function can be expressed as a sum of minterms (products of literals) or as a product of maxterms (sums of literals). Let F(A,B,C) be the boolean function defined by the truth table given in the question.

To prove that F1 = m1 + m3 + m5 + m7, we can observe that F1 is true when either of the following minterms is true: m1 = A'B'C, m3 = AB'C, m5 = A'BC, m7 = ABC. Conversely, if F1 is true, then one of these minterms must be true. Therefore, F1 = m1 + m3 + m5 + m7.

Similarly, to prove that F2 = m0 + m1 + m4 + m5, we can observe that F2 is true when either of the following minterms is true: m0 = A'B'C', m1 = A'B'C, m4 = AB'C', m5 = A'BC. Conversely, if F2 is true, then one of these minterms must be true. Therefore, F2 = m0 + m1 + m4 + m5.

To prove that F1 + F2 = m0 + m1 + m3 + m4 + m5 + m7, we can observe that F1 + F2 is true when either of the following minterms is true: m0 = A'B'C', m1 = A'B'C, m3 = AB'C, m4 = AB'C', m5 = A'BC, m7 = ABC. Conversely, if F1 + F2 is true, then one of these minterms must be true. Therefore, F1 + F2 = m0 + m1 + m3 + m4 + m5 + m7.

Finally, to prove that F1F2 = m1 + m5, we can observe that F1F2 is true when either of the following minterms is true: m1 = A'B'C, m5 = A'BC. Conversely, if F1F2 is true, then one of these minterms must be true. Therefore, F1F2 = m1 + m5.

To know more about truth table, here

brainly.com/question/31482105

#SPJ4

is abc =def ? if so name the congruence postulate that applies

Answers

We can see that the congruency of the triangle can be under ASA

What is congruency under ASA?

If two triangles meet the ASA (Angle-Side-Angle) condition, they are congruent. Two triangles must satisfy the conditions listed below in order to be congruent under ASA:

Angles in two different triangles are equal to each other by a factor of two.

The side that lies between the two equal angles of one triangle, known as the included side, also appears in the other triangle.

Thus the triangles that have been shown in the image are congruent under ASA.

Learn more about ASA:https://brainly.com/question/29616338

#SPJ1

[tex](\frac{3}{4} -\frac{5}{6} )x^{2}[/tex]

Answers

The equation has no genuine/real solutions [tex]$(\frac{3}{4}-\frac{5}{6})x^2$[/tex], but if working with complex numbers, [tex]$x = \pm\sqrt{60}i$[/tex].

What is x in the given equation, find it using complex number property?

We can begin by simplifying the left side of the equation to find x:

[tex]$(\frac{3}{4} - \frac{5}{6})x^2 = 5$[/tex]

To simplify the left side, we need to find a common denominator for 4 and 6, which is 12:

[tex]$(\frac{9}{12} - \frac{10}{12})x^2 = 5$[/tex]

Simplifying further:

[tex]$-\frac{1}{12}x^2 = 5$[/tex]

Multiplying both sides by -12:

[tex]$x^2 = -60$[/tex]

We can't take the square root of a negative number and get a real number, so there are no real solutions to this equation. If you're working with complex numbers, you could say:

[tex]$x = \pm\sqrt{60}i$[/tex]

where i is the imaginary unit.

The question is not complete; the full question will be -
[tex]$(\frac{3}{4}-\frac{5}{6})x^2 = 5$[/tex]  Find the x in the given equation using complex number property?

To learn more about complex numbers, visit: https://brainly.com/question/28654613

#SPJ1

Select whether the equation has a solution or not


roots
no roots

Answers

Answer:

The equation has no solution. It has no roots. Therefore the second option no roots is correct.

Step-by-step explanation:

Suppose there is a real number y that satisfies the equation.

Squaring both sides, we get:

2y-5 = 2y+6

Subtracting 2y from both the sides, we get:

-5=6

-5 can't be equal to 6, this is a contradiction.

Therefore, there is no real number y that satisfies the equation. Hence there are no roots for this equation.

To know more about equation and roots,

brainly.com/question/29778728

brainly.com/question/12029673

find the equations of the normal line to the surface z = 4 x 8 y 2 z=4x8y2 at the point ( − 1 , − 1 , 4 ) (-1,-1,4) .

Answers

The equation of the normal line to the surface z = 4x⁸y² at the point (-1, -1, 4) is x = -t, y = -1 - t, z = 4 + 4t.

To find the equation of the normal line, follow these steps:
1. Calculate the partial derivatives of z with respect to x and y.
2. Evaluate the partial derivatives at the given point.
3. Form the parametric equation of the line using the gradient vector and the point.

Step 1: ∂z/∂x = 32x⁷y², ∂z/∂y = 8x⁸y
Step 2: ∂z/∂x(-1, -1) = 32, ∂z/∂y(-1, -1) = 8
Step 3: Gradient vector = (32, 8, -1), point = (-1, -1, 4)
Parametric equation: x = -1 - 32t, y = -1 - 8t, z = 4 - t

To know more about partial derivatives click on below link:

https://brainly.com/question/31397807#

#SPJ11

If Tamara works 4x+7 total hours at her three jobs, where x represents how many
hours she worked at her first job, find the total hours she worked at her three jobs
assuming she works 12.5 hours per week at her first job.

Answers

Answer:

57 hours

Step-by-step explanation:

substitute the value 12.5 as x and solve

4(12.5)+7

50+7

57

so she works 57 hours

a basketball player makes 65% of her free throws. if she attempts 10 free throws, what is the probability she will make exactly 7 of them?

Answers

The probability that the basketball player will make exactly 7 of her 10 free throws is approximately 0.226, or 22.6%.

How is probability determined?

We may utilize the binomial probability formula to resolve this issue:

P(X=k) = C(n,k) * p^k * (1-p)^(n-k)

where X is the number of made baskets from free throws, k is the number of made baskets we're looking for (k=7), n is the total number of attempts (n=10), p is the chance of success (p=0.65), and C(n,k) is the number of combinations of n things taken k at a time. (also known as the binomial coefficient).

When we enter the values, we obtain:

P(X=7) = C(10,7) * (0.65)⁷ * (1-0.65)³

We can calculate that C(10,7) = 120 using a calculator or a table. We thus have:

P(X=7) = 120 * (0.65)⁷ * (0.35)³

P(X=7) ≈ 0.226

Learn more about probability here:

brainly.com/question/30034780

#SPJ1

Pre-Calclus! 95 Points! + [tex]Brainliest[/tex]
[tex]Question:[/tex]
Sam got an assignment in which questions on real numbers are given. He got some confusion between prime numbers and composite numbers. He is stuck in one question, please help him and make him understand this concept. Consider the numbers 1×29×107×2679+47 and 1×71. Help him to identify which of these two is composite number and which one is prime number. Also, find these numbers after multiplication.

[tex]Options[/tex] ↓↓
( In picture )

Expectations:
Correct
Explanation

Must not:
Incorrect
No explanation
Spam
( none of above = reported )

Answers

Answer: here is what I've got 8,312,984

I thank it is B.

Step-by-step explanation:

Given the following numbers 1×29×107×2679+47 and 1×71.

We are asked to determine which number is composite and which is prime.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

What is a composite number? A composite number is a number with more than two factors (ex: 10=>1,2,5,10).

What is a prime number? A prime number is a number with only two factors, the number "1" and itself (ex: 7=> 1,7).

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Right away we can recognize 1×71 will not be a composite number. No nice factors go into it rather than the number "1" and "71," so this is a prime number.

This leaves 1×29×107×2679+47 to be our composite number. I would simply just use a calculator to expand this number.

=> 1×29×107×2679+47= 8,312,984

Thus, the second option is correct.

which library procedure reads a 32-bit signed decimal integer from standard input?

Answers

In the C programming language, the standard library procedure for reading a 32-bit signed decimal integer from standard input is scanf(). In the Python programming language, the standard library is int(input()).

An example usage of scanf() to read a 32-bit signed decimal integer from standard input is:

#include <stdio.h>

int main() {

   int my_integer;

   scanf("%d", &my_integer);

   printf("The integer is %d\n", my_integer);

   return 0;

}

An example usage of int(input()) to read a 32-bit signed decimal integer from standard input is:

my_integer = int(input())

print("The integer is", my_integer)

Other programming languages may have different procedures for reading input.

To learn more about 32-bit signed integer click on,

https://brainly.com/question/16672724

#SPJ4

this exercise shows why each pivot (in eli1nination by pivoting) must be in a different row. (a) in example 7, make the third pivot on entry (3, 3) instead of on entry (3, 2). can you still read off the solution? (b) in exercise 3, part (b), make the following sequence of pivots, entry (3, 1), entry (2, 2), then entry (2, 3). does this provide a solution to the system of equations?

Answers

It is important to carefully choose the entries to pivot on to ensure that each pivot is in a different row.

(a) if we make the third pivot on entry (3, 3) instead of on entry (3, 2), then we will end up with a row of zeros in the third row after performing the row operations. This will make it impossible to read off the solution, as we will have an equation such as 0x + 0y + 0z = a number, which has no unique solution. Therefore, making the third pivot on entry (3, 3) will not provide a valid solution.

(b) if we make the sequence of pivots on entry (3, 1), entry (2, 2), then entry (2, 3), then we will again end up with a row of zeros in the third row after performing the row operations. This is because entry (2, 3) is already zero before we perform the third pivot. This system of equations will also have no unique solution, and thus this sequence of pivots will not provide a valid solution.

These examples illustrate why each pivot in elimination by pivoting must be in a different row. If we attempt to pivot on an entry in a row that has already been pivoted on, we will end up with a row of zeros and no unique solution. Therefore, it is important to carefully choose the entries to pivot on to ensure that each pivot is in a different row.

To learn more about sequence visit: https://brainly.com/question/30262438

#SPJ11

Variability in a distribution that would be otherwise non-normal may tend towards normality with random sampling. True False

Answers

The given statement: Variability in a distribution that would be otherwise non-normal may tend towards normality with random sampling is TRUE.

Random sampling is a statistical technique that involves selecting a random sample from a population to make inferences about the population as a whole. The central limit theorem states that the sample mean of a sufficiently large sample size from any population with a finite variance will tend towards a normal distribution.

Therefore, if a distribution is non-normal but has a finite variance, random sampling can cause the variability in the sample means to tend towards normality. This is because the variability of the sample means decreases with increasing sample size due to the central limit theorem. In other words, the distribution of sample means becomes increasingly normal as the sample size increases.

This is important because many statistical methods assume normality, so random sampling can make these methods applicable to non-normal populations. However, it's important to note that there are some cases where random sampling may not be effective in making a non-normal distribution tend towards normality.

To know more about Variability in a distribution, refer here:
https://brainly.com/question/27376566#
#SPJ11

QRSP is a parallelogram. Find RS and m

Answers

Answer:

Volume 340

Step-by-step explanation:

Evaluate. Write your answer as a whole number or as a simplified fraction. 9^-8 / 9^-6

Answers

Answer:

Answer would be 1/81 or 0.01 as a decimal rounded to the nearest hundredth

d. Rahul is carrying a load of 80 kg along a distance of 200 metres in 5 minutes. But the same load is carried by Reena to the same distance in 4 minutes. Who has more power? Show it by calculation.​

Answers

Step-by-step explanation:

Power is defined as the amount of work done per unit time. Work, in turn, is defined as force times distance. Assuming both Rahul and Reena are moving the same load with the same gravitational force, the person who does more work in less time will have more power.

Let's first calculate the total work done by each person:

Work = Force x Distance

Both Rahul and Reena moved the load the same distance of 200 meters, so their work is proportional to the force applied.

For Rahul,

Work = (Force by Rahul) x 200

For Reena,

Work = (Force by Reena) x 200

Since the loads are the same, we can write:

(Force by Rahul) x 200 = (Force by Reena) x 200

or

Force by Rahul = Force by Reena

Now, let's calculate the power of each person:

Power = Work / Time

For Rahul,

Power = (Force by Rahul x 200) / (5 x 60) = Force by Rahul / 15

For Reena,

Power = (Force by Reena x 200) / (4 x 60) = Force by Reena / 12

Since Force by Rahul = Force by Reena, we can compare their powers:

Power by Rahul = Force by Rahul / 15

Power by Reena = Force by Reena / 12

If Power by Rahul > Power by Reena, then Rahul has more power. If Power by Reena > Power by Rahul, then Reena has more power.

So, we need to compare Force by Rahul / 15 and Force by Reena / 12. Given that Force by Rahul equals Force by Reena,

Force by Rahul / 15 = Force by Reena / 15 x 12

Since Reena took less time to cover the same distance, her power is greater.

Therefore, Reena has more power.

given that z is a standard normal variable, p(z > 1.61) is (rounding to two decimal places):

Answers

The probability that a standard normal variable z is greater than 1.61 is 0.0549.

This is derived from the standard normal table which gives the area under the normal curve between -∞ and the given value.

This area is equal to the probability of the variable falling between -∞ and the given value. For a standard normal variable, the area between -∞ and 1.61 is 0.9451, which is the probability of the variable falling between -∞ and 1.61.

The area between 1.61 and ∞ is 0.0549, which is the probability of the variable falling between 1.61 and ∞.

Therefore, the probability of z being greater than 1.61 is 0.0549.

Complete Question:

Given that z is a standard normal variable, what is the probability that z is greater than 1.61?

To learn more about probability visit:

https://brainly.com/question/24756209

#SPJ4

calculate the sum of the series [infinity] n = 1 an whose partial sums are given. sn = 5 − 8(0.8)n

Answers

The sum of the series ∑∞ n = 1 an is equal to 5.

To find the sum of the series ∑∞ n = 1 an using the given partial sum formula sn = 5 − 8(0.8)ⁿ, we can use the concept of the limit.

First, let's find the general term of the series.

We can do this by taking the difference between consecutive partial sums:

sⁿ⁺¹ - sn = (5 - 8(0.8)ⁿ⁺¹) - (5 - 8(0.8)ⁿ)

= 5 - 5 - 8(0.8)ⁿ⁺¹ + 8(0.8)ⁿ

= 8(0.8)ⁿ(0.8 - 1)

Notice that we can simplify 0.8 - 1 as -0.2:

sn+1 - sn = -0.2 × 8(0.8)ⁿ

Now, let's take the limit as n approaches infinity:

lim (n→∞) (sn+1 - sn) = lim (n→∞) (-0.2 × 8(0.8)ⁿ)

Since 0.8 is less than 1, we can see that the term 8(0.8)ⁿ approaches zero as n approaches infinity:

lim (n→∞) 8(0.8)ⁿ = 0

Therefore, we have:

lim (n→∞) (sn+1 - sn) = lim (n→∞) (-0.2 × 8(0.8)ⁿ) = -0.2 × 0 = 0

The limit of (sn+1 - sn) as n approaches infinity is zero, indicating that the series converges to a finite sum.

To find the actual sum, we can calculate the limit of the partial sum formula as n approaches infinity:

lim (n→∞) sn = lim (n→∞) (5 − 8(0.8)ⁿ)

Since 0.8 is less than 1, we have:

lim (n→∞) (0.8)ⁿ = 0

Therefore, we have:

lim (n→∞) sn = lim (n→∞) (5 − 8(0.8)ⁿ) = 5 - 8 × 0 = 5

Hence, the sum of the series ∑∞ n = 1 an is equal to 5.

Learn more about partial sum click;

https://brainly.com/question/31900309

#SPJ12

determine the value k such that there are an infinite number of solutions to the system of linear equations. 521x - 17y = 13 kx + 5y = -353

Answers

If k = -2605/17, the two equations will be linearly dependent and have an infinite number of solutions.

To have an infinite number of solutions to the system of linear equations, the two equations must be linearly dependent, which means that one of the equations can be obtained by multiplying the other equation by a constant and adding or subtracting the result.

We can check if this is the case by dividing the coefficients of one of the variables in the first equation by the coefficients of the same variable in the second equation:

521/ k = -17/5

Solving for k, we get:

k = -2605/17

If k is any other value, the equations will be linearly independent and have either one unique solution or no solutions.

To learn more about linear equations click on,

https://brainly.com/question/30287877

#SPJ4

PLEASE PLEASE HELP :)))))

Answers

Answer:

below

Step-by-step explanation:

Part A)

The radius of a circle is half of its diameter.

Therefore, the radius of the circle is:

radius = diameter/2 = 8cm/2 = 4cm

So, the radius of the circle is 4cm.

You can also find radius by just dividing the diameter in half, or by 2.

Part B)

The area of a circle can be found using the formula:

Area = πr^2

where π is the mathematical constant pi (approximated as 3.14), and r is the radius of the circle.

Substituting the values given in the question, we get:

Area = πr^2

= 3.14 × (4cm)^2

= 3.14 × 16cm^2

Therefore, the area of the circle is:Area = 50.24cm^2 (rounded to two decimal places)

So, the area of the circle with a diameter of 8cm is 50.24cm^2.

~(A&~B) transforn the sentence into nnf

Answers

the given sentence ~(A & ~B) in Negation Normal Form (NNF) is [tex](~A | B).[/tex]

What is the negation normal form?

To convert it into Negation Normal Form (NNF), we can follow these steps:

Step 1: De Morgan's Laws

De Morgan's Laws state that ~(A & B) is equivalent to (~A | ~B), and ~(A | B) is equivalent to (~A & ~B).

Applying De Morgan's Laws to the given sentence, we get:

~(A & ~B) is equivalent to (~A | ~~B)

Step 2: Double Negation Elimination

~~B is equivalent to B, so we can eliminate the double negation.

Applying Double Negation Elimination, we get:

 [tex]~(A & ~B)[/tex] is equivalent to (~A | B)

Therefore, the given sentence ~(A & ~B) in Negation Normal Form (NNF) is [tex](~A | B).[/tex]

Learn more about negation here:

https://brainly.com/question/22787240

#SPJ1

Solve the system of equations.
y = 17x² + 19x - 37
y = 19x 20
Write the coordinates in exact form. Simplify all fractions and radicals.
-

Answers

The solution to the given system of equations is as follows:

(-1,-39) and (1,-1).

How to solve the system of equations?

The equations that compose the system in this problem are given as follows:

y = 17x² + 19x - 37y = 19x - 20.

We solve the system graphically, hence the solution is given by the point of intersection of the graphs of the two functions.

From the graph of the system given at the end of the answer, it is found that the solution to the system of equations is given as follows:

(-1,-39) and (1,-1).

More can be learned about a system of equations at brainly.com/question/30347294

#SPJ1

solve the given third-order differential equation by variation of parameters. y''' 36y' = sec(6x)

Answers

To solve the given third-order differential equation by variation of parameters, we first need to find the complementary solution. The characteristic equation is given by r^3 + 36r = 0, which has roots r = 0 and r = ±6i.  After solving, we will get [tex]y(x) = y_c(x) + y_p(x)[/tex]



Next, we need to find the particular solution using variation of parameters. Let the particular solution be of the form y_p(x) = u1(x) + u2(x)cos(6x) + u3(x)sin(6x), where u1(x), u2(x), and u3(x) are functions to be determined.


We can find the derivatives of y_p(x) as follows:
y'_p(x) = u1'(x) + 6u2(x)sin(6x) + 6u3(x)cos(6x)
y''_p(x) = u1''(x) + 36u2(x)cos(6x) - 36u3(x)sin(6x)
y'''_p(x) = u1'''(x) - 216u2(x)sin(6x) - 216u3(x)cos(6x)



Substituting these derivatives into the given differential equation, we get:
u1'''(x) - 216u2(x)sin(6x) - 216u3(x)cos(6x) + 36(u1'(x) + 6u2(x)sin(6x) + 6u3(x)cos(6x)) = sec(6x)
Simplifying this equation, we get:
u1'''(x) + 36u1'(x) = sec(6x) + 216u2(x)sin(6x) + 216u3(x)cos(6x)

To solve for u1(x), u2(x), and u3(x), we can use the following formulas:
u1'(x) = (1/W) [(-f(x)u2(x) - g(x)u3(x))sin(6x) + (f(x)u3(x) - h(x)u2(x))cos(6x)]
u2'(x) = (1/W) [(f(x)u1(x) + g(x)u3(x))sin(6x) + (-f(x)u3(x) + h(x)u1(x))cos(6x)]
u3'(x) = (1/W) [(-g(x)u1(x) - h(x)u2(x))sin(6x) + (g(x)u2(x) - h(x)u1(x))cos(6x)]


where f(x) = 0, g(x) = 0, and h(x) = 36.
W is the Wronskian of the complementary solution, given by:
W = |cos(6x) sin(6x) -6sin(6x) 6cos(6x)|
Solving these equations for u1(x), u2(x), and u3(x), we can substitute them back into the particular solution to obtain the final solution:  y(x) = [tex]y(x) = y_c(x) + y_p(x)[/tex]. where y_c(x) is the complementary solution and y_p(x) is the particular solution we just found.

Know more about derivatives here:

https://brainly.com/question/30365299

#SPJ11

A customer needs to borrow $9,500 to purchase a car. Which loan option should the customer choose in order to pay the smallest amount of interest?

Answers

Answer:

The loan option with the lowest interest rate will result in the customer paying the smallest amount of interest. Therefore, the customer should choose the loan option with the lowest interest rate. However, without knowing the interest rates of the loan options available to the customer, it is impossible to determine which option would be the best.

The researcher must decide on the level of significance after setting up the null hypothesis and alternate hypothesis, but before formulating a decision rule and collecting sample data. True or False

Answers

The statement, "Researcher must decide on "level-of-Significance" after setting up "null-hypothesis" and "alternate-hypothesis", but before formulating a "decision-rule" and collecting sample data" is True because it finds the critical value, which is then used to decide whether to reject or fail to reject "Null Hypothesis".

The "level-of-significance" is defined as a predetermined probability threshold which is used in hypothesis testing to determine if the results of a statistical test are statistically significant or not.

The level of significance is generally decided upon before conducting the hypothesis test. It denotes probability of rejecting the "null-hypothesis" when it is true.

The researcher generally sets this level before collecting any data and it is used to determine the critical value for the test statistic, which is used to decide whether to reject or "fail-to-reject" the null hypothesis.

The level of significance is generally set at 0.05 or 0.01 but can vary depending on the research question and the level of risk the researcher is willing to accept in making a Type I error which is rejecting the null hypothesis when it is true.

Therefore, the statement is True.

Learn more about Significance Level here

https://brainly.com/question/13947717

#SPJ4

complete the statement ""a group element x is its own inverse if and only if |x| .""

Answers

The completed statement is: A group element x is its own inverse if and only if |x| = 2.



"A group element x is its own inverse if and only if |x| = 2."

Here's a step-by-step explanation:

1. A "group" is a set of elements with a specific binary operation that satisfies certain conditions, like closure, associativity, having an identity element, and every element having an inverse.

2. An "element" is a member of the group, denoted by x in this case.

3. An "inverse" is an element that, when combined with another element using the group operation, results in the identity element of the group.

4. The statement says that x is its own inverse, meaning that when you combine x with itself using the group operation, you get the identity element.

5. |x| represents the order of the element x, which is the smallest positive integer n such that x^n results in the identity element.

6. When x is its own inverse, combining x with itself (x^2) will give the identity element, meaning |x| = 2.

Learn more about group element at: brainly.com/question/5460947

#SPJ11

Helicopter Number Labor Hours
1 2000
2 1450
3 1238
4 1143
5 1073
6 1029
7 989
8 951
Determine the best curvilinear trendline that maximizes R2.
The best trendline is power with an R^2 value of( ) , The Equation is y=( )*^( )

Answers

Best curvilinear trendline for given data is a power trendline with an R² value of (insert calculated R² value here). The equation of trendline is y = (insert estimated value for a here) *[tex]x^(insert estimated value for b here).[/tex] This equation allows us to estimate labor hours for various helicopter number.



To find the best power trendline, we can use statistical techniques such as regression analysis to estimate the parameters that yield the highest R² value. R², also known as the coefficient of determination, measures the proportion of the total variation in the dependent variable that can be explained by the model. A higher R² value indicates a better fit of the trendline to the data.


The given power trendline equation is [tex]: y = a * x^b[/tex]. Here, 'y' represents the labor hours, 'x' denotes the helicopter number, and 'a' and 'b' are the constants to be determined. Once these constants are estimated, the resulting equation can be used to predict labor hours for different helicopter numbers with reasonable accuracy.

Know more about regression analysis here:

https://brainly.com/question/30011167

#SPJ11

if a researcher is interested in testinf more than one independent variable within a single expirement what type of design is most appropriate

Answers

If a researcher is interested in testing more than one independent variable within a single experiment, the most appropriate type of design is a factorial design.

A factorial design allows researchers to investigate the main effects of each independent variable and also the interaction effects between them.

In a factorial design, each level of one independent variable is combined with each level of the other independent variable.

Creating a matrix of all possible combinations of the levels of the variables.

For example, if a researcher is interested in investigating the effects of two independent variables, A and B, each with two levels.

Low and high, a 2 x 2 factorial design would be appropriate.

This would involve randomly assigning participants to one of four conditions.

Representing the four possible combinations of the levels of the two independent variables,

low A/low B, low A/high B, high A/low B, and high A/high B.

Using a factorial design enables researchers to examine not only the effects of each independent variable on the dependent variable.

But also any potential interactions between the variables.

This approach can provide more detailed and nuanced insights into the factors that affect the dependent variable.

However, it's important to consider the increased complexity of data analysis and interpretation when using a factorial design.

Learn more about independent variable here

brainly.com/question/13258403

#SPJ4

Other Questions
Find the period and horizontal shift of the function. f ( x ) = 4 sec ( / 2 ( x + 3 ) ) Period: Horizontal shift: why is greek culture considered a mixture of eastern and western cultures PLEASE HELP ASAP Question 4(Multiple Choice Worth 2 points)(Identifying Transformations LC)Use the image to determine the line of reflection.Graph of polygon ABCDE with point E at negative 3 comma 1. A second polygon A prime B prime C prime D prime E prime with E prime at negative 3 comma negative 3. Reflection across the x-axis Reflection across the y-axis Reflection across y = 1 Reflection across x = 3 a substantial decrease in the aggregate price level that reduces firms' net worth may stall a recovery from a recession. this process is called insolvency. moral hazard. debt deflation. illiquidity. Question 1If there is a belief held by society and a person living in that society has their behavior altered by thatbelief, they likely experienced_________________?O Stereotype ThreatO Door-in-the-face pheomenonO Self-Fulfilling ProphecyO American Culture 8. T F In many ways the patrons of art in history havebeen replaced in our time by foundations andcorporations.9. T F The painting the "Starry Night". was created byVincent Van Gogh. Which statement correctly analyzes how the passageswork together to develop a central idea? Infertility is defined as an inability to conceive in what time period of attempted conception?CHOOSE ONE- 18 months- 12 months- 24 months- 6 months The action potential is propagated to the postsynaptic neuron whenever {{c1::ion channels opened by the neurotransmitter receptors depolarize the postsynaptic neuron}} If the projects are independent, the AW at the MARR is calculated. All the projects with AW equal or greater than zero are acceptable.TRUEFALSE A population of rabbits can have brown fur and white fur with brown fur being the dominant allele. By random chance, the offspring may all be brown and this could reduce or eliminate the allele for white fur. In your reference, please explain the concept of genetic drift and how this is an example of genetic drift. How is fixation portrayed in this example? find the area of the parallelogram with vertices a(3, 0), b(1, 4), c(6, 3), and d(4, 1). Use the cost-benefit principle to evaluate each of the given statements. Select each statement which is likely to change a manager's decision regarding whether or not to make a new investment. Expectations of future revenues. O increase such that the costs still exceed the benefits of the new investment. O increase such that the benefits now exceed the costs of the new investment. O decrease such that the costs now exceed the benefits of the new investment, O decrease such that the benefits exceed the costs of the new investment what are the competition, size and going forward of abike business when are cable properties (decremental conduction) not in effect?a.during the EPSP b.during the IPSP c.none of these are correct d.n the nodes of Ranvier e.in the myelinated segments of the axon Mr. Valderrama is analyzing how weather affects the grazing patterns of his cattle. Every day over a year, he observed how many of his 100 cattle grazed on a certain hillside and noted whether the sky was clear or cloudy. The data for clear and cloudy days are summarized in the dot plots below. an warranty, usually in writing, is created by the seller or manufacturer and has two forms: the full warranty and the limited warranty. use one word per blank. Create a factorial design table for an experiment on the effects of room temperature and noise level on performance on the MCAT. Be sure to indicate whether each independent variable will be manipulated between-subjects or within-subjects and explain why. A chemist who works for a company that produces hydrogen gas suggests that they could increase the yield of H2 (g) by adjusting the volume of the equilibrium system. Should the volume be increased or decreased? Explain. N2O(g) + NO2(g) --> an ice skater begins a spin with his arms out. his angular velocity at the beginning of the spin is 2 rad/s and his moment of inertia is 6 kg m2. as the spin proceeds, he pulls in his arms decreasing his moment of inertia to 4.5 kg m2. what is the angular velocity after pulling in his arms