What is the x and y intercept of 10x-13y=0?
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Related Questions
Multiply or divide as indicated
x^4•x^-2
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Answer:
x^2
Step-by-step explanation:
[tex]x^4\cdot x^{-2}= \\\\x^{4-2}= \\\\x^2[/tex]
Hope this helps!
Answer:
[tex]x^{2}[/tex]
Step-by-step explanation:
[tex]x^4 \times x^{-2}[/tex]
[tex]x^{4+-2}[/tex]
[tex]x^{4-2}[/tex]
[tex]x^{2}[/tex]
44cm is rounded to nearest whole cm. Write down the maximum possible length it could have been.
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Answer:
44.49 repeated
Step-by-step explanation:
Sorry for the wait
Find the value of the logarithm.
logg1
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Answer: 0
Step-by-step explanation:
Log(1) is just [tex]10^x=1[/tex]
In order for that to be equal to 1, x has to be equal to 0. Anything to the power of 0 equals 1
When there is no base to a log, it is always assumed to be base 10. the basic formula is [tex]a^c=b[/tex]
a being the base
c being the answer of the log equation
and b being the number that the log is taking on
Answer:
0
Step-by-step explanation:
10 raised to the power of 0 equals 1.
I need help with this question please
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Answer:
Just connect points Y and D with a straight line to make YD. Do the same for YE and YF, just attach Y to points E and F with a straight line.
what is between 1/3 and 7/8 answer
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Answer:
The number which is exactly in between 1/3 and 7/8 will be their average. The average = (1/3 + 7/8) / 2 = (8/24 + 21/24) / 2 = (29/24) / 2 = 29/48.
Mount Everest is 8,850m tall. Convert the height to kilometers.
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Answer: 8.85km
Step-by-step explanation:
8,850m = 8,850 m⋅1 km / 1,000 m
Is (1,2), (2,3) (3,4), (4,5) a function?
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Answer:
yes
Step-by-step explanation:
The domain is the set of x-values: {1, 2, 3, 4}. None of these are repeated, so this relation is a function.
The purchasing manager for a chain of grocery stores is interested in customer's preference for non-alcoholic beverages. She wondered if there was a relationship between the customer's beverage preference and the customer's income class. She randomly sampled 500 customers and asked their non-alcoholic beverage preference (soft drinks, energy drinks, fruit juices, vitamin water, or other) and what their income class is (lower class, lower middle class, middle class, upper middle class, upper class). Assuming all conditions are satisfied, which of the following tests should the manager use to test her hypothesis?
A. The chi-square test of homogeneity.
B. The goodness-of-fit chi-square test.
C. The chi-square test of independence.
D. The two-sample z-test for proportions.
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Answer:
Option C
Step-by-step explanation:
The chi-square test of independence is used to determined whether there is a relationship between two categorical variable which in this study is to establish if there is a relationship between a customer's beverage preference and his/her income class (these are categorical variables).
The null hypothesis would be that no relationship exists between the variables while the alternative would be that there is a relationship between the two variables.
For each of the following situations, state whether the appropriate test would be a Independent Samples T test or Paired T Test, assuming the conditions are met to run these tests. Give the null and alternate hypotheses that would be used to test the claim using mathematical notation.
Suppose you want to test your theory that "taking Aspirin regularly reduces blood pressure". To investigate your claim, you find 40 identical twin pairs (80 people) willing to participate in your study. You randomly assign one member of each pair to take aspirin every day for 2 months, and the other to take a placebo every day for 2 months. After 2 months, you measure the blood pressure of all 80 people. For each twin pair, you then compute the difference in blood pressure between treatments, calculated as the blood pressure of the twin taking the aspirin the blood pressure of the twin taking the placebo.
Which test is appropriate?
A. Independent Samples T Test
B. Paired T Test
What are the appropriate hypotheses?
A. H0: μaspirin - μplacebo = 0 and Ha: μaspirin - μplacebo > 0
B. H0: μd = 0 and Ha: μd < 0 where μd= mean difference in blood pressure (calculated as aspirin - placebo)
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Answer:
B. Paired T Test
B. H0: μd = 0 and Ha: μd < 0 where μd= mean difference in blood pressure (calculated as aspirin - placebo)
Step-by-step explanation:
As the experiment is based on the difference between the results of a pair, the most appropiate test is a paired t-test.
If the 80 people group had been dividided in 2 and then compare the means for each group, it would have been a independent samples t-test.
For each pair, a variable d (for difference) is calculated and used as the outcome sample to perform the test.
Then, the null hypothesis will state that the population mean for this difference is not significantly different from 0, and the alternative hypothesis claiming it is signficant different from 0.
The sample means for the treatment group and the placebo is not individually calculated, as only the difference for each pair is used as sample in a paired t-test.
According to an airline, flights on a certain route are on time 85% of the time. Suppose 20 flights are randomly selected and the number of on-time flights is recorded.
(a) Explain why this is a binomial experiment
(b) Find and interpret the probabdity that exadly 15 flights are on time.
(c) Find and interpret the probability that fewer than 15 flights are on time.
(d) Find and interpret the probability that at least 15 flights are on time.
(e) Find and interpret the probability that between 13 and 15 flights, inclusive, are on time.
(a) Identify the statements that explain why this is a binomial experiment. Select all that apply.
A. Each trial depends on the previous trial
B. There are three mutually exclusive possibly outcomes, arriving on-time, arriving early, and arriving late.
C. The experiment is performed unti a desired number of successes is reached
D. The trials are independent.
E. The probability of success is the same for each trial of the experiment.
F. There are two mutually exclusive outcomes, success or failure.
G. The experiment is performed a fixed number of times.
Answers
Answer:
See the answers below. Thanks!
Step-by-step explanation:
(a). Option F is the correct choice. "There are two mutually exclusive outcomes, success or failure."
(b). P(X=15) = 0.1702
(c). P(X<15) = 0.0673
(d). P(X>=15) = 1 - P(X<15) = 0.9327
(e). P(13<=X<=15) = 0.1482
Best Regards!
Find the slope of the line that goes through the given points.
(10, 2) and (8,4)
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Answer:
m = -1
Step-by-step explanation:
Slope Formula: [tex]m = \frac{y2-y1}{x2-x1}[/tex]
So,
[tex]\frac{4-2}{8-10}[/tex] = -1
Please answer this correctly
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Answer:
7 trains
Step-by-step explanation:
At least 30 and fewer than 70 makes it 30-69
So,
30-69 => 7 trains
7 Strains
EXPLANATION:
The question is asking for any numbers greater than 30 but less than 70. In this stem-leaf chart we can see that there’s 7 numbers greater than 30 but less than 70. Those numbers would be 33, 41, 42, 44, 54, 57, and 59. A total of 7 numbers/ strains.
The mean temperature for the first 4 days in January was 7°C. The mean temperature for the first 5 days in January was 9°C. What was the temperature on the 5th day?
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Answer:
If the mean was 7 for the first 4 days that means the sum of temperatures of the first 4 days was 7 * 4 = 28. Similarly, the sum of temperatures of the first 5 days was 9 * 5 = 45 so that means that the temp. on the 5th day was 45 - 28 = 17°C.
Answer:
11 C
Step-by-step explanation:
To find the mean (average), you have to add all and divide by 2, so if you reverse this, you get (7 + X)/2 = 9 , 9 * 2 - 7 = 11
Rocco used these steps to solve the equation 4x + 6 = 4 + 2(2x + 1). Which choice describes the meaning of his result, 6 = 6?
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Answer:
infinite solutions
Step-by-step explanation:
it means that all x are solution of this equation as 6=6 is always true
A fence 6 feet tall runs parallel to a tall building at a distance of 6 feet from the building. We want to find the the length of the shortest ladder that will reach from the ground over the fence to the wall of the building. Here are some hints for finding a solution: Use the angle that the ladder makes with the ground to define the position of the ladder and draw a picture of the ladder leaning against the wall of the building and just touching the top of the fence. If the ladder makes an angle 0.82 radians with the ground, touches the top of the fence and just reaches the wall, calculate the distance along the ladder from the ground to the top of the fence. equation editorEquation Editor The distance along the ladder from the top of the fence to the wall is equation editorEquation Editor Using these hints write a function L(x) which gives the total length of a ladder which touches the ground at an angle x, touches the top of the fence and just reaches the wall. L(x) = equation editorEquation Editor . Use this function to find the length of the shortest ladder which will clear the fence. The length of the shortest ladder is equation editorEquation Editor feet.
Answers
Answer:
12√2 feet ≈ 16.97 feet
Step-by-step explanation:
For the dimensions shown in the attached diagram, the distance "a" along the ladder from the ground to the fence is ...
a = (6 ft)/sin(x) = (6 ft)/sin(0.82) ≈ 8.206 ft
The distance along the ladder from the top of the fence to the wall is ...
b = (6 ft)/cos(x) = (6 ft)/cos(0.82) ≈ 8.795 ft
__
In general, the distance along the ladder from the ground to the wall is ...
L(x) = a +b
L(x) = 6/sin(x) +6/cos(x)
This distance will be shortest for the case where the derivative with respect to x is zero.
L'(x) = 6(-cos(x)/sin(x)² +sin(x)/cos(x)²) = 6(sin(x)³ -cos(x)³)/(sin(x)²cos(x²))
This will be zero when the numerator is zero:
0 = 6(sin(x) -cos(x))(1 -sin(x)cos(x))
The last factor is always positive, so the solution here is ...
sin(x) = cos(x) ⇒ x = π/4
And the length of the shortest ladder is ...
L(π/4) = 6√2 + 6√2
L(π/4) = 12√2 . . . . feet
_____
The ladder length for the "trial" angle of 0.82 radians was ...
8.206 +8.795 = 17.001 . . . ft
The actual shortest ladder is ...
12√2 = 16.971 . . . feet
In the interval 0° < x < 360°, find the values of x for which tan x = 2.7475
Give your answers to the nearest degree,
1
Answers
Answer:
[tex]70^\circ, 250^\circ[/tex]
Step-by-step explanation:
Given that:
[tex]tan x= 2.7475[/tex]
and [tex]0^\circ < x < 360^\circ[/tex] i.e. [tex]x[/tex] lies in the interval [tex]0^\circ[/tex] to [tex]360^\circ[/tex] or [tex]0\ to\ 2\pi[/tex].
To find: The possible values for x in the interval [tex]0^\circ[/tex] to [tex]360^\circ[/tex] = ?
First of all, let us learn something about [tex]tan\theta[/tex].
In a right angled triangle the value of [tex]tan\theta[/tex] can be calculated as follows:
[tex]tan\theta = \dfrac{Perpendicular}{Base}[/tex]
i.e. [tex]tan\theta[/tex] is equal to the ratio of Perpendicular to Base in a right angled triangle.
We are given that:
[tex]tan x= 2.7475[/tex]
[tex]\Rightarrow x = tan^{-1}(2.7475)\\\Rightarrow x = 70^\circ[/tex]
So, the value of x in first quadrant is [tex]70^\circ[/tex].
It is also known that value of tangent is positive in the first and third quadrant.
We are given a positive value of tangent here,
So, another value of [tex]x = 180^\circ+70^\circ = 250^\circ[/tex]
Hence, the correct answers are: [tex]x=70^\circ, 250^\circ[/tex]
How is a trapezoid different from a rectangle?
Answers
Step-by-step explanation:
Rectangles have four right angles while trapezoids do not. 2. Opposite sides of a rectangle are parallel and equal while in the case of a trapezoid the opposite sides of at least one pair are parallel
What is the midpoint of the segment shown below?
Answers
Answer:
option a (-1,-1/2)
Step-by-step explanation:
apply mid point formula
Timmy received $50 for his birthday following the birthday party his parents promised him 5$ each week for completing his chores. Assuming Timmy completes all chores uses a linear equation to determine the number of dollars Timmy will have in 7 weeks
Answers
Answer:
$85
Step-by-step explanation:
Let y represent Timmy's money after x weeks. If we assume that the only money Timmy has is what is mentioned in the problem statement, then ...
y = 50 +5x . . . . . $50 initially plus $5 for each week
After 7 weeks, x = 7, so Timmy's fortune will be ...
y = 50 +5(7) = 50 +35
y = 85
Timmy will have $85 in 7 weeks.
Which equation represents the number of test questions in the problem
below?
A test is worth 50 points. Multiple-choice questions are worth 1 point, and
short-answer questions are worth 3 points. If the test has 20 questions, how
many multiple-choice questions are there?
A. m + s = 50
B. m + 2s = 20
C. m + s = 20
D. m. s= 20
Answers
Answer:
C
Step-by-step explanation:
The number of muliple and short answer equal twenty. No question about the worth.
Answer:
Option C. is the correct choice.
Step-by-step explanation:
The system of equations for this problem will be.
m + s = 20 (total no. of questions)
1m + 3s = 50 (total no. of points)
Best Regards!
Write down the 3rd term in the sequence given by: T(n) = n2 + 4 pls explain how to do It plsss
Answers
Answer:
T(3) = 13
Step-by-step explanation:
If we are trying to find the 3rd term of this specific sequence, then we simply plug in 3 as n.
T(3) = (3)² + 4
T(3) = 9 + 4
T(3) = 13
However, this isn't proper notation for an arithmetic or geometric sequence.
Answer:
13
Step-by-step explanation:
T(n) = n² + 4
Put n as 3 to find the third term.
T(3) = (3)² + 4
Solve for the powers.
T(3) = 9 + 4
Add the terms.
T(3) = 13
In its first month of operations, Weatherall Company made three purchases of merchandise in the following sequence: (1) 120 units at $5, (2) 460 units at $6, and (3) 100 units at $7. Collapse question part (a1) Calculate the average unit cost. (Round answer to 2 decimal places, e.g. 15.25.) Average unit cost
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Answer: 4h4hj4h44 n4
Step-by-step explanation: b4jb4j 4 n4
An employee earns a 25% commission rate on his sales. One day he earned $175. What was his amount of sales?
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Answer:
sales = $700
Step-by-step explanation:
he earned commission of 175
this is 25% of sales
if 25% = 175
what about 100%
sales = (100*175)/25
sales = $700
Answer:700
Step-by-step explanation:
The cost of unleaded gasoline in the Bay Area once followed a normal distribution with a mean of $4.74 and a standard deviation of $0.16. Sixteen gas stations from the Bay area are randomly chosen. We are interested in the average cost of gasoline for the 15 gas stations. What is the approximate probability that the average price for 15 gas stations is over $4.99?
Answers
Answer:
Approximately 0% probability that the average price for 15 gas stations is over $4.99.
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution and the central limit theorem.
Normal probability distribution
When the distribution is normal, we use the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
In this question, we have that:
[tex]\mu = 4.74, \sigma = 0.16, n = 16, s = \frac{0.16}{\sqrt{16}} = 0.04[/tex]
What is the approximate probability that the average price for 15 gas stations is over $4.99?
This is 1 subtracted by the pvalue of Z when X = 4.99. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{4.99 - 4.74}{0.04}[/tex]
[tex]Z = 6.25[/tex]
[tex]Z = 6.25[/tex] has a pvalue very close to 1.
1 - 1 = 0
Approximately 0% probability that the average price for 15 gas stations is over $4.99.
Five individuals have responded to a request by a blood bank for blood donations. None of them has donated before, so their blood types are unknown. Suppose only type O is desired and only one of the five actually has this type. If the potential donors are selected in random order for typing, what is the probability that at least four individuals must be typed to obtain the desired type
Answers
Answer:
The probability that at least four individuals must be typed to obtain the desired type is P=0.2.
Step-by-step explanation:
The donors are randomly selected to be typed.
The probability of selecting a random donor and it does not have type O is 4/5=0.8.
The probability of selecting the second donor and he does not have type O is 3/4, as one of the donors has been already tested and does not have type O.
Then, we can apply the same reasoning for the next two donors and calculate the probability that at least four individuals as:
[tex]P(k=4)=\left(\dfrac{4}{5}\right)\cdot\left(\dfrac{3}{4}\right)\cdot\left(\dfrac{2}{3}\right)\cdot\left(\dfrac{1}{2}\right)=\dfrac{1}{5}=0.2[/tex]
If h(x) = x - 7 and g(x) = x2, which expression is equivalent to (gºn (5)?
Answers
Answer:
(g o h)(5) = 4
Step-by-step explanation:
h(x) = x - 7
g(x) = x^2
(g o h)(5) = ?
(g o h)(x) = g(h(x)) = (x - 7)^2
(g o h)(5) = (5 - 7)^2 = (-2)^2 = 4
Answer:
g°h(5)=4
Step-by-step explanation:
g°h(5)=g( h(5))
h(5)=5-7=-2
g(-2)=(-2)^2=2^2=4
How do I determine if a limit exist considering how it looks on a graph? Can I determine if a limit exists solely from the graph? Like can I determine if this limit exists solely from looking at the graph:
Answers
Answer: See below
Step-by-step explanation:
1. At x=1, the limit does not exist. If you see an open circle on the graph like you do here, you know that the function is discontinuous. This graph actually shows a jump discontinuity at x=1.
2. You can determine if a limit exists by solely looking at the graph. Unfortunately in this case, f(1)=1 and [tex]\lim_{x \to \ 1^-} f(x)[/tex] are not equal to each other. Therefore, the limit does not exist.
Find the value of expression 21-2a if a =3
Answers
Answer:
15
Step-by-step explanation:
[tex]21-2a \\a =3\\21 -2(3)\\21-6\\15[/tex]
Answer:
Step-by-step explanation:
15 im sure
In the diagram below, triangle abc ~ triangle dec . What is the value of x? A. 28 b. 24 c. 22 d. 26
Answers
Answer:
Option A.
Step-by-step explanation:
From the figure attached,
Given : ΔABC ~ ΔDEC
By the property of similarity,
"Corresponding sides of the similar triangles are proportional"
[tex]\frac{\text{AB}}{ED}=\frac{BC}{EC}=\frac{AC}{DC}[/tex]
Since, [tex]\frac{\text{AB}}{ED}=\frac{AC}{DC}[/tex]
[tex]\frac{42}{6}=\frac{x}{(32-x)}[/tex]
6x = 42(32 - x)
6x = 1344 - 42x
6x + 42x = 1344
48x = 1344
x = [tex]\frac{1344}{48}[/tex]
x = 28 units
Therefore, Option (A). x = 28 units will be the answer.
Answer:28
Step-by-step explanation:
Help please take your time i promise to brainlist you!!!!
Kevin is saving for a new bike. He has already saved $65. He makes $15 for each lawn that he mows. The bike that Kevin wants to buy costs $175. Which inequality could be used to find x, the number of lawns Kevin needs to mow to earn enough money to buy the bike he wants?
Answers
Answer:
175≥ 15x+65
Step-by-step explanation:
Kevin needs to have greater than or equal to 175 for his bike so you would start like this 175≥ then because he can mow lawns for money and each lawn is 15 you would arrange the inequality like this 175≥ 15x next you just add the 65 because its the amount of money he already has to make 175≥ 15x+65.
The number of lawns Kevin needs to mow to earn enough money to buy the bike he wants is 175≥ 15x+65.
What is Inequality?
This is defined as non-equal comparison between two numbers or mathematical expressions.
Since the bike he wants to buy is $175 then the amount needed will be equal or greater than it. This therefore means:
175≥ 15x+65 where 15x is amount made from mowing and 65 the amount saved by him.
Read more about Inequality here https://brainly.com/question/24372553
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