If m and n are positive integers that satisfy the equation 3m^3= 5n^5 the smallest possible value for m+n

Answers

Answer 1

The two smaller positive integers are:

m = 675

n = 45

And the sum is 675

What is the smallest possible value of m + n?

We know that we have two positive integers, m and n.

And we know that:

3*m³ = 5*n⁵

One way of finding the numbers is evaluating one of the two in positive integers, until we get that the other one is also an integer.

For example,we can solve this for m to get:

m³ = (5/3)*n⁵

m = ∛((5/3)*n⁵)

Now just evaluate in different integer values of n.

if n = 3 we will get:

m = ∛((5/3)*3⁵) =  ∛(405) = 7.39

So this is not a solution.

Now I will use n = 45 = 5*3*3 (so all the exponents inside the cubic root are multiples of 3)

m = ∛((5/3)*(5*3²)⁵)

m = ∛(5⁶*3⁹) = 5²*3³ = 25*27 = 675

Then the sum is:

45 + 675 = 720

These is the smaller sum.

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Related Questions

What is Statement 3.
Given: P is the midpoint of TQ and RS.
Prove: ATPR AQPS
X
Proof:
Statements
1. P is the midpoint of TQ and RS.
2. TP QP, RP = SP
3.
4. ATPR AQPS
O ZPTR
ZPQS
O ZPSQ ZPRT
OZSPQ LRPT
R
Reasons
1. Given
2.
3. Vertical Angles Theorem
4.

Answers

The statements required for the prove are given in the explanation.

What are vertical angle?

Vertical angles are two opposite angles which have equal values because they are formed by two straight lines intersecting at a point.

And a midpoint is a point which divides a line segment into two equal parts.

The required statements to prove that ΔTPR ≅ΔQPS are given below;

                 STATEMENT                                 REASON

1. P is the midpoint of TQ and RS                  Given

2. TP = QP, RP = SP                                        Definition of midpoint

3. <SPQ ≅ <RPT                                              Vertical angle theorem

4. ΔTPR ≅ΔQPS                                             Side-Angle-Side theorem

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Find the value of x
60,64,36,48 and x

Answers

Answer:

72 degrees.

Step-by-step explanation:

Exterior angles add up to 360 degrees. So, 60+64+36+48+2x=360. Simplifying, we get that 2x+208=360, or that x=(360-208)/2=144/2=72 degrees.

Tarea
Lección 37. Técnicas para multiplicar decimales
1. Con un compañero, resuelvan con calculadora, los siguientes productos. Des-
pués, analicen los resultados y redacten una técnica para multiplicar dos núme-
ros decimales.
3 x 15 =
Secuencia 11
0.3 x 15 =
3 x 0.015 =
0.03 x 15 =
3 x 1.5 =
3 x 0.15 =
0.3 x 1.5 =
0.3 x 0.15 =
Para multiplicar dos números con punto decimal sin usar la calculadora, se pue-
de hacer lo siguiente:

Answers

The values are 45, 4.5, 0.45, and 0.045.

What are numbers?

Numbers are representations of quantity or quality.

We have many types of numbers such as,

- Decimal numbers

- Real numbers

- Rational numbers

- Irrational numbers

- Complex numbers

- Even numbers

- Odd numbers

- Whole numbers

We have,

We need to multiply the numbers without using a calculator.

The steps to multiply two decimal numbers without using a calculator.

Step 1:

Ignore the decimal points and multiply the two numbers as if they were whole numbers.

Step 2:

Count the total number of digits to the right of the decimal points in both numbers.

Step 3:

Add the number of digits from step 2, and place the decimal point in the product so that it has that many digits to the right.

Now,

3 x 15 =45

0.3 x 15 = 4.5

3 x 0.015 = 0.045

0.03 x 15 = 0.45

3 x 1.5 = 4.5

3 x 0.15 = 0.45

0.3 x 1.5 = 0.45

0.3 x 0.15 = 0.045

Thus,

The values are 45, 4.5, 0.45, and 0.045.

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The complete question.

Multiply the two decimal numbers without using a calculator,

3 x 15

0.3 x 15

3 x 0.015

0.03 x 15

3 x 1.5

3 x 0.15

0.3 x 1.5

0.3 x 0.15

please show work!!

i’ll give enough points!!

Answers

The answer is A
3x-4

Genevieve's family traveled
2
7
of the distance to her grandfather’s house on Saturday. They traveled
4
5
of the remaining distance on Sunday. What fraction of the total distance to her grandfather’s house was traveled on Sunday?'

Answers

2/4 + 4/5

=28/35 is the total distance to her grandfather's house

Question: 7) How many significant figures are in the measured number 0.00208 m? A) six B) two C) three D) four E)

Answers

Number of significant figures are in the measured number 0.00208 m is option (C) three

The significant figures in a measured number are the digits that carry meaning or contribute to the precision of the measurement. In general, significant figures include all non-zero digits and any zeros between non-zero digits.

In this case, the measured number is 0.00208 m. The first two zeros in this number are not significant because they are only placeholders to indicate the decimal point's position. The first significant digit is 2, which is followed by two more significant digits, 0 and 8. Therefore, there are three significant figures in the measured number.

Therefore, the correct option is (C) three

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From a population with a variance of 900, a sample of 225 items is selected. At 95% confidence, what is the margin of error for the population mean? round your answer to three decimal places

Answers

At 95% confidence, the margin of error for the population mean is:

3.920

What is the margin of error for the population mean?

The margin of error for the population mean can be calculated using the formula:

margin of error = (z-score)*(standard deviation/√(sample size))


Where z-score is the value that corresponds to the desired confidence level, standard deviation is the square root of the variance, and sample size is the number of items in the sample.

Given that the variance is 900, the standard deviation is √(900) = 30. The sample size is 225, and the z-score for a 95% confidence level is 1.96.

Plugging these values into the formula, we get:

margin of error = (1.96)*(30/√(225))

margin of error = (1.96)*(30/15)

margin of error = (1.96)*(2)

margin of error = 3.92

Rounding to three decimal places, the margin of error is 3.920.

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Statistics and probability maths question, should be easy. Working out is required please. 25 pts.

Answers

Answer:

................ ⅓........

Find x and y for both questions

Answers

The values of  x and y are

Figure a: y = 3 and x = 10Figure b: y = 72 and x = 24

How to determine the values of  x and y

Figure (a)

From the question, we have the following parameters that can be used in our computation:

Parallel and congruent lines

This means that

5y - 8 = 2y + 1

So, we have

3y = 9

Divide

y = 3

Also, we have

1/5x + 3 = 4x - 35

So, we have

x + 15 = 20x - 175

This gives

19x = 190

x = 10

Figure (a)

Here, we have

1/3y - 6 = 66 - 2/3y

This gives

y - 18 = 198 - 2y

Evaluate

3y = 216

Divide

y = 72

For x, we have

1/4x + 5 = 1/2x - 7

So, we have

1/2x =+ 12

Evaluate

x = 24

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The table shows the possible outcomes of spinning the given
spinner and flipping a fair coin. Find the probability of the coin
landing heads up and the pointer landing on either 1, 2, or 4.

Answers

The table mentioned in the question is not provided. However, we can use the following formula to find the probability of two independent events occurring together:

P(A and B) = P(A) x P(B)

Here, A represents the event of the coin landing heads up, and B represents the event of the pointer landing on either 1, 2, or 4.

Assuming that the spinner has equal sections, the probability of the pointer landing on either 1, 2, or 4 is 3/8 (since there are three out of eight possible sections on the spinner).

The probability of flipping a fair coin and getting heads is 1/2.

Therefore, the probability of the coin landing heads up and the pointer landing on either 1, 2, or 4 is:

P(A and B) = P(A) x P(B) = (1/2) x (3/8) = 3/16

So, the probability of the coin landing heads up and the pointer landing on either 1, 2, or 4 is 3/16.

The probability of the coin landing heads up and the pointer landing on either 1, 2, or 4 is 3/16.

What is probability?

Probability denotes the possibility of the outcome of any random event. The meaning of this term is to check the extent to which any event is likely to happen.

Given that, a spinner is spined and coin is flipped,

P(A and B) = P(A) x P(B)

Here, A represents the event of the coin landing heads up, and B represents the event of the pointer landing on either 1, 2, or 4.

Assuming that the spinner has equal sections, the probability of the pointer landing on either 1, 2, or 4 is 3/8 (since there are three out of eight possible sections on the spinner).

The probability of flipping a fair coin and getting heads is 1/2.

Therefore, the probability of the coin landing heads up and the pointer landing on either 1, 2, or 4 is:

P(A and B) = P(A) x P(B) = (1/2) x (3/8) = 3/16

So, the probability of the coin landing heads up and the pointer landing on either 1, 2, or 4 is 3/16.

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how many terms are in the following expression?

Answers

The number of terms in the expression, 6 + 2 x - 4 y + 5 z is 4 terms.

How to find the number of terms ?

In the expression 6 + 2x - 4y + 5z, the number of terms is four, not the number of signs. The terms in this expression are:

62 x- 4 y 5 z

Each term is separated by an operator (either addition or subtraction), which is represented by a sign. Therefore, the expression contains three addition signs and one subtraction sign.

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The full question is:

How many terms are in the following expression 6 + 2 x - 4 y + 5 z

An insurance company claims that in the population of homeowners, the mean annual loss from fire is u-$250 with a standard deviation of o - $ 5000. The distribution of loss is strongly right-skewed: Many policies have $0 loss, but a few have large losses. If we create a sampling distribution with a sample of 64 homeowners, what is the probability that a sample average exceeds $5100?​

Answers

The probability that the sample average exceeded 5100 is given as follows:

0%.

How to obtain probabilities using the normal distribution?

The z-score of a measure X of a variable that has mean symbolized by [tex]\mu[/tex] and standard deviation symbolized by [tex]\sigma[/tex] is obtained by the rule presented as follows:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The z-score represents how many standard deviations the measure X is above or below the mean of the distribution, depending if the obtained z-score is positive or negative.Using the z-score table, the p-value associated with the calculated z-score is found, and it represents the percentile of the measure X in the distribution.By the Central Limit Theorem, the sampling distribution of sample means of size n has standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

The parameters for this problem are given as follows:

[tex]\mu = 250, \sigma = 5000, n = 64, s = \frac{5000}{\sqrt{64}} = 625[/tex]

The probability that a sample average exceeds $5,100 is one subtracted by the p-value of Z when X = 5100, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem:

[tex]Z = \frac{X - \mu}{s}[/tex]

Z = (5100 - 250)/625

Z = 7.76

Z = 7.76 has a p-value of 1.

1 - 1 = 0.

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What is the conversion of 163 lbs to kg ?

Answers

The conversion of mass unit lbs, 163 lbs to other mass unit kilogram is equals to the 73.93555631 kg.

Kilogram (kg) and pound (lbs) are used to measure the mass of the substance/objects. Kilogram is used for mass in the International System of Units, whereas pound is used in the imperial and US customary systems. To convert lbs to kg, multiply the particular lbs value by 0.45359237 kg. For example, to convert x lbs to kilogram, multiply the x lbs by 0.45359237 kg. So,x lbs = x × 0.45359237 kg

x lbs = 0.45359237x kg, if x = 6

Therefore, 6 lbs is approximately equal to 2.72155422 kg. It is very important skill to convert the lbs to kilograms in mass measurment. Now, we have 163 lbs. We know that one lbs = 0.45359237 kg

Therefore, 163 lbs = 163 x 0.45359237 kg

163 lbs = 73.93555631 kg.

Hence, 163 lbs is equal to 73.93555631 kg.

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what is p value two tailed calculator

Answers

A p-value two-tailed calculator is a statistical tool used to calculate the p-value for a two-tailed test of a population mean or proportion.

A p-value two-tailed calculator is an online tool used in statistical analysis to determine the probability value of a two-tailed hypothesis test. This calculator helps researchers and analysts to determine if there is a significant difference between two population means or proportions. It calculates the p-value, which is the probability of obtaining results as extreme or more extreme than the observed results under the null hypothesis.

Users input sample data, population parameters, significance level, and type of test to obtain the calculated p-value. This tool is essential in hypothesis testing in fields such as psychology, medicine, and economics.

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Select all the correct locations on the graph.
Vector u has its initial point at (5, -7) and its terminal point at (8, -9). On the graph, identify the scalar multiples of u that have a direction opposite that of u.

Answers

The scalar multiples of u that have a direction opposite that of u is -54  i + 21 j .

Initial Point of vector , u= (-7,2)= -7 i +  2 j

Terminal point of Vector , u= (11, -5)= 11 i -5 j

Vector , u= Terminal point - Initial Point

               = 11 i - 5 j - (-7 i+  2 j)

                = 11  i - 5 j + 7 i - 2 j

                = 18 i - 7 j

Vector, v= 3 ×Direction Opposite to that of vector, u

             = -3 u

            = -3 × (18 i - 7 j )

            = 3× (-18 i + 7 j)

             = -54  i + 21 j

Hence, The scalar multiples of u that have a direction opposite that of u is -54  i + 21 j .

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What is the value of 4.3X 10^5

Answers

Answer:  430000

Step-by-step explanation: you have to do pemdas

Answer: 430,000. /four hundred thirty thousand

Step-by-step explanation:

The value of 4.3 x 10^5 is 430,000.

To understand this, the notation 4.3 x 10^5 represents a number in scientific notation, where 4.3 is the coefficient or significand, and 10^5 is the exponent. The exponent of 10 tells us how many places to move the decimal point to the right. In this case, the exponent 5 means we need to move the decimal point five places to the right.

Starting with 4.3, we move the decimal point five places to the right to get 430,000. So, 4.3 x 10^5 is equivalent to 430,000.

what does it mean by give your answer in 'terms of pi' ??
please help me and thanks

Answers

Therefore, the area of the quarter circle of radius 8 cm is 16π square centimeters (or approximately 50.2655 square centimeters if we use a decimal approximation for π).

What is circle?

A circle is a two-dimensional shape that is defined as the set of all points that are a fixed distance (called the radius) from a central point (called the center) in a plane. It is one of the most basic geometric shapes and is often used in a variety of mathematical and scientific contexts. One important thing to note about circles is that they are symmetrical: any line passing through the center of a circle divides the circle into two halves that are mirror images of each other. Circles are commonly used in a variety of contexts, including geometry, trigonometry, physics, engineering, and many other fields. They are also used in everyday life, such as in the design of wheels and other circular objects, the calculation of the areas of circular fields or gardens, and the measurement of circular objects like plates and bowls.

Here,

The formula for the area of a quarter circle is given by:

A = (1/4)πr²

where A is the area of the quarter circle, r is the radius of the circle, and π is the mathematical constant pi (approximately 3.14159).

In this case, the radius of the quarter circle is 8 cm, so we can substitute this value into the formula and simplify as follows:

A = (1/4)π(8 cm)²

A = (1/4)π(64 cm²)

A = 16π cm²

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Factorise the following:
a) x² + 6x +9
b) x² - 6x + 8
c) x² - 4x - 32
d) x² + x-42

Answers

On factorizing each equation we get

a) x² + 6x + 9 =  (x + 3) (x + 3)  

b) x² - 6x + 8 = (x - 4) (x - 2)  

c) x² - 4x - 32 = (x - 8) (x + 4)  

d) x² + x - 42 = (x + 7) (x - 6)  

Factorization

Factorization is the process of finding the factors of an expression or number. In algebra, factorization involves expressing an algebraic expression as a product of its factors.  

To factorize the following split the middle term and group out the common factors as given below.

Here we have four equations that can be factorized as follows

a) x² + 6x + 9  

=> x² +3x + 3x + 9         [ Split middles term ]

=> x(x + 3) +3(x + 3)      [ Grouping the terms ]

=> (x + 3) (x + 3)  

∴  a) x² + 6x + 9 =  (x + 3) (x + 3)  

b) x² - 6x + 8

=> x² - 4x - 2x + 8               [ Split middles term ]

=> x(x - 4) -2(x - 4)              [ Grouping the terms ]  

=> (x - 4) (x - 2)

∴ x² - 6x + 8 = (x - 4) (x - 2)  

c) x² - 4x - 32  

=> x² - 8x + 4x - 32         [ Split middles term ]  

=> x(x - 8) + 4(x - 8)         [ Grouping the terms ]    

=> (x - 8) (x + 4)

∴ x² - 4x - 32 = (x - 8) (x + 4)  

d) x² + x - 42  

=> x² + 7x - 6x - 42             [ Split middles term ]  

=> x(x + 7) - 6(x + 7)            [ Grouping the terms ]    

=> (x + 7) (x - 6)

∴ x² + x - 42 = (x + 7) (x - 6)  

Therefore,

On factorizing each equation we get

a) x² + 6x + 9 =  (x + 3) (x + 3)  

b) x² - 6x + 8 = (x - 4) (x - 2)  

c) x² - 4x - 32 = (x - 8) (x + 4)  

d) x² + x - 42 = (x + 7) (x - 6)  

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In the following diagram line c intercepts line d

Answers

Answer: where do i answer where is the question?

Step-by-step explanation:

2
The given diagram shows the steps for constructing a line parallel to line AB and passing through point P, but an error has occurred in the construction.
second arc
F
(centered at P)
P
first arc
(centered at C) D-
A
O A.
1st
E
What needs to be corrected in the diagram to fix the error?
B
The second arc should be drawn centered at point D.
The third arc should be drawn centered at point F.
OB.
OC. The first arc should pass through point B.
OD. A fourth arc needs drawn so that it passes through point P.
A
P
E
2nd
third arc
(centered at D)
B
4

Answers

So the answer is: the first arc should pass through point B (not A). All other elements in the diagram appear to be correct.

What distinguishes a mathematical element?

The elements or members of a set are the parts that make it up. To divide the components of a set, commas and two curly (idle) braces are typically employed. Capital letters are always used to print the set's name. The set "A" in this context consists of the letters v, w, x, y, and z.

Based on the given diagram and instructions, it appears that the error in the construction is that the first arc is centered at point C instead of point A. The correct procedure for constructing a line parallel to line AB and passing through point P is as follows:

1.Draw a line AB and mark point P not on line AB.

2.From point P, draw an arc that intersects line AB at points D and E.

3.Draw another arc, centered at point D, with the same radius as the first arc. This arc should intersect the first arc at point F.

4.Draw a line through point P and point F. This line is parallel to line AB and passes through point P.

So the answer is: the first arc should pass through point B (not A). All other elements in the diagram appear to be correct.

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The third arc should be drawn centred at F.

What is an arc?

In geometry, an arc is a curved segment of a circle or any curved line. It is a part of a curve that is bounded by two distinct endpoints and is characterized by its length, its curvature, and its central angle.

Constructing a parallel line to line AB and passing through point P.

To find:

The error occurred in the construction.

The procedure is,

The first arc must be drawn centred at C.

The second must be drawn centred at P.

Finally, the third arc must be drawn centred at F.

But here, the third arc is drawn centred at D. This is wrong.

The correct step is that the third arc must be centred at F.

Hence, The third arc should be drawn centred at F.

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base:14.2 and area:63.9 yd2

Answers

The required height of the triangle whose area and base are given is 9 yd.

Area of Triangle:

The area of a triangle in a two-dimensional plane is the space that it completely encloses. A triangle is a closed shape with three sides and three vertices, as is pretty obvious.The area of a triangle is the total space occupied by its three sides. The general formula for determining the triangle's area is half of the product of its base and height.

In the given question, we have to find the height of the given triangle ,

we know that ,

Area of triangle = base x height x 1/2.

63.9 = 1/2 × 14.2 × height

Height = (63.9 × 2) ÷ 14.2

Height = 127.8 ÷ 14.2

Height = 9 yd

Therefore , the height of the triangle is 9 yd .

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Calculate the value of x to one decimal place

Answers

The value of x in the triangle is 3.4 cm

How to determine the value of x

From the question, we have the following parameters that can be used in our computation:

The triangle

Using the above as a guide, we have the following:

tan(43) = 3.2/x

Make x the subject of the formula

So, we have the following representation

x = 3.2/tan(43)

Evaluate

x = 3.4

Hence, the solution is 3.4

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pls help I need this by the end of today

Answers

A function to represent the total charges for your hotel and car rental is Option C.

Describe Function?

In mathematics, a function is a relation between two sets of values, where each input value from the first set (called the domain) corresponds to exactly one output value in the second set (called the range). The output value of a function is determined by its input value and any relevant rules or formulas.

Formally, a function can be defined as follows: Let X and Y be two non-empty sets. A function f from X to Y is a rule or formula that assigns to each element x in X a unique element y in Y, denoted by f(x), such that for any two elements x1 and x2 in X, if x1 = x2, then f(x1) = f(x2). The set X is called the domain of the function, and the set Y is called the codomain or range of the function.

Functions can be represented graphically, algebraically, or in tabular form. The graph of a function shows how the output value of the function varies with the input value, and can be used to visualize the behavior of the function. The algebraic representation of a function can be given by a formula or equation that expresses the output value in terms of the input value. A tabular representation of a function shows the input-output pairs in a table.

Functions are used in many areas of mathematics, science, engineering, and economics to model and describe relationships between variables. They are also used in practical applications, such as in computer programming, where they are used to define algorithms and data structures.

The total charges for the hotel and car rental can be found by adding the charges for the hotel and the car rental. Therefore, the function that represents the total charges can be found by adding the two given functions:

p(x) = 135x + (45 + 79x)

p(x) = 135x + 45 + 79x

p(x) = 214x + 45

Therefore, the function that represents the total charges for the hotel and car rental is p(x) = 214x + 45.

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find the volume of the solid obtained by rotating the region bounded by

Answers

To find the volume of a solid obtained by rotating a region bounded by curves around an axis, we can use the disk or washer method.

Suppose we want to find the volume of a solid obtained by rotating the region bounded by the curves y = f(x), y = g(x), and the lines x = a and x = b around the x-axis.

We can divide the region into vertical slices of width Δx, and rotate each slice around the x-axis to obtain a disk or washer. The volume of each disk or washer can be approximated as the area of the base times the thickness, or π(R² - r²) Δx, where R and r are the outer and inner radii of the disk or washer, respectively.

To find the exact volume, we take the limit as Δx approaches zero and sum up the volumes of all the disks or washers using integration:

V = ∫[a, b] π(R² - r²) dx

where R = f(x) and r = g(x).

Alternatively, if we want to rotate the region around the y-axis, we can divide the region into horizontal slices of width Δy, and rotate each slice around the y-axis to obtain a disk or washer. The volume of each disk or washer can be approximated as π(R² - r²)Δy, where R and r are the outer and inner radii of the disk or washer, respectively.

The exact volume can be found using integration as:

V = ∫[c ,d] π(R² - r²) dy

where R = f(y) and r = g(y), and c and d are the y-coordinates of the endpoints of the region.

In either case, it is important to sketch the region and identify the appropriate radii before setting up the integral.

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Multiply the following rational expressions. Remember to fully simplify your answer.
(x^2-1)/(2x-3) ∙ (2x^2+x-6)/(x^2+3x+2)
PLEASE SHOW ALL WORK FOR BRAINLIEST

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Answer:

Answered By Unish ©

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Step-by-step explanation:

Multiply the following rational expressions. Remember to fully simplify your answer.

(x^2-1)/(2x-3) ∙ (2x^2+x-6)/(x^2+3x+2)

First, let's factor the expressions in both numerators and denominators to simplify the multiplication:

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(x^2 - 1)/(2x - 3) = (x + 1)(x - 1)/(2x - 3)

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(2x^2 + x - 6)/(x^2 + 3x + 2) = (2x - 3)(x + 2)/(x + 1)(x + 2)

Notice that the factor (x + 2) appears in both the numerator and denominator of the second expression. We can cancel this factor and simplify the expression:

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(x^2 - 1)/(2x - 3) ∙ (2x^2 + x - 6)/(x^2 + 3x + 2)

= [(x + 1)(x - 1)/(2x - 3)] ∙ [(2x - 3)/(x + 1)]

= (x - 1)

Therefore, the simplified product of the two rational expressions is x - 1.

A man claims to have extrasensory perception (ESP). As a test, a fair coin is flipped 22 times, and the man is asked to predict the outcome in advance. He gets 16 out of 22 correct.
What is the probability that he would have done at least this well if he had no ESP?
Probability= ?

Answers

The probability that someone would have done at least as well as the man with no ESP is 0.077, or 7.7%.

The probability that someone would have done at least as well as the man with no ESP is calculated by the binomial probability formula. This formula takes into account the number of trials, the number of successes, and the probability of success in each trial. In this case, the number of trials is 22, the number of successes is 16, and the probability of success in each trial is 50% (0.5). The binomial probability formula states that the probability of success given this information is 0.077. This means that the probability that someone would have done at least as well as the man with no ESP is 0.077, or 7.7%.

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Problem of Tartaglia (1500-1577): among all positive numbers a, b whose sum is 8, find those for which the product of the two numbers and their difference is largest. (Enter your answers as a comma-separated list.)
a, b = _____
Let x = a - b and express abx in terms of x alone.

Answers

As per the information provided, a = 4√3/3 + 4, b = 4 - 4√3/3 the answer can be calculated with optimization method. it will be as follows:

Sum of a and b is 8, we get

a+b=8

b=8−a

Now, let x=a−b

Then we get,

[tex]x=a−(8−a) \\ x=2a−8 \\ x+8=2 \\ 1 \div 2x+4=a

[/tex]

we use this to answer to solve for b

[tex]b=8−a \\ =8−(1 \div 2x+4) \\ =4−1 \div 2x

[/tex]

Now we use the product of two numbers and its difference. This can be expressed as:

[tex]a⋅b⋅x=(1 \div 2x+4)(4−1 \div 2x) \\ x=2 {x}^{2} − \frac{1}{4} {x}^{3} +16x−2x^{2} \\ =−14x^{3} +16x

[/tex]

Thus, this expression that we need to maximize. Take the derivative, set it equal to zero, and solve for x

[tex]−3 \div 4x ^{2} +16=0 \\ 16 =3 \div 4 x ^{2} \\ 643=x \\ 28√3 \div 3=x[/tex]

Now for us to check that this is a maximum, we have to note that the second derivative is

[tex]−3 \div 2x

\\ At \\

x=8√3 \div 3

[/tex]

the second derivative is −4√3. Since this number is negative, the point is a maximum.

Now we must find the values of a and b for this x. We have to use the relationship

[tex]a=1 \div 2x+4[/tex]

[tex]a=1 \div 2 \times 8√3 \div 3+4 \\ =4√3 \div 3+4[/tex]

now we use the relationship b=8−a

[tex]b=8−(4√3 \div 3+4) \\ =4−4√3 \div 3[/tex]

The first step in determining a function's maximum or minimum value is differentiating it. Then, set this derivative to zero and conduct the computation.

x. This will reveal the location of a function's maximum or minimum, but it won't reveal which.

Take the second derivative to get more details. A local maximum occurs when both the first and second derivatives are negative. You have a local minimum when both the first derivative and the second derivative are zero.

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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

Use the circle graph shown below to answer the question.

A pie chart labeled Favorite Sports to Watch is divided into three portions. Football represents 42 percent, baseball represents 33 percent, and soccer represents 25 percent.

If 210 people said football was their favorite sport to watch, how many people were surveyed?


Natalie picked 135 berries in 15 minutes. If she continues picking at that rate, how many total minutes will it take her to pick 486 berries?


a. Find the unit price for each option shown below. Round to the nearest cent when necessary.

Option I: 10 candy bars for $6.75

Option II: 12 candy bars for $7.25


b. Which option is the better buy.



Solve the proportion.
16
50
=
x
156
.
25




A jacket's original price is $65.00. It is on sale for 40% off. You have to pay 5% sales tax. What is the final price for the jacket?

Answers

A) 500

B) 54 minutes

C) 68cents and 60 cents

D)

E) $40.95

Proportions

A proportion is a statement that says that two ratios are equal. They can be used in many everyday situations like comparing sizes, cooking, calculating percentages, and more.

Proportions can be written as equivalent fractions or as equal ratios.

A) 42% = 210

100% = (210 x 100)/42

= 500 people

B) 135 berries = 15 minutes

    486 berries = ??minutes

= (486 x 15)/135

= 54 minutes

C) unit price = $6.75/10 = 0.675cents or 68cents

    ii) unit price = $7.25/12 = 0.604cents or 60cents

D) Inconclusive question.

E) 40% of 65 = $26

65 - 26 = $39

Tax = 5% = $1.95

Total = $39 + 1.95

Final Price of jacket = $40.95

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Which expressions can be used to find the volume of the pyramid? Select three choices

Answers

The correct answer regarding the volume of the pyramid has been explained and given below.

The volume of the pyramid shape is given by the product of its base area and its height and then the product is divided by 3.

i.e.V = (1/3)a²h

So, the options which are correct are, (a) XY and ST , (b) VU and TW  and (d) TX and WX.

From the given figure we can clearly see that,

a=XY=YZ=ZU=UV=VW=WX

h=ST

Firstly, the volume of the pyramid can be easily determined by XY and ST.

and also, VU and WX can be used to calculate the area of the base and YZ and TX can be used to calculate height.

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Complete the two column proof ?

Answers

The required statements and reasons to complete the two column proof are explained below.

What are similar triangles?

When on  comparison the corresponding length of sides of two triangles have some common properties, then they are said to be similar. Though similarity does not imply congruency.

The complete two column proof is shown as thus:

      STATEMENT               REASON

1. FG/FH = KJ/KH              Given

2. <H ≅ <H                        Reflexive property

3. ΔFHK ~ ΔGHJ               Two pairs of corresponding sides are proportional

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