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1 year ago

Which set of ordered pairs does not represent a function? part 2

Mathematics

2 answers:

Tom [10]1 year ago

3 0

Answer: the third option, you can’t have two of the same input.

hodyreva [135]1 year ago

3 0

Answer:

{( -1,-1), (-3,-8),(-5,-3),(3,-3)} should be the correct option :)

Step-by-step explanation:

Please give me brainliest :)

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Find the equation of the line that is parallel to the line x+3y=-15 that passes through the origin

Monica [59]

You would subtract x from each side. It would then be 3y=-x-15. Then you would divide all of the equation by 3. Your final answer would be y=-3x-5.

5 0

2 years ago

Evaluate the expression when x=3 , y=−4 , and z=−6. z−2x/y

hichkok12 [17]

Answer:

9/2

distribute the value of x,y, and z, on the given questions, and then you do multiplication, next addition, lastly lowest term.

6 0

2 years ago

Consider the following hypothesis test:

Gnom [1K]

Answer:

a. z=3.09. Yes, it can be concluded that the population mean is greater than 50.

b. z=1.24. No, it can not be concluded that the population mean is greater than 50.

c. z=2.22. Yes, it can be concluded that the population mean is greater than 50.

Step-by-step explanation:

We have a hypothesis test for the mean, with the hypothesis:

$H_0: \mu\leq50\\\\H_a:\mu> 50$

The sample size is n=55 and the population standard deviation is 6.

The significance level is 0.05.

We can calculate the standard error as:

$\sigma_M=\dfrac{\sigma}{\sqrt{n}}=\dfrac{6}{\sqrt{55}}=0.809$

For a significance level of 0.05, the critical value for z is zc=1.644. If the test statistic is bigger than 1.644, the null hypothesis is rejected.

a. If the sample mean is M=52.5, the test statistic is:

$z=\dfrac{M-\mu}{\sigma_M}=\dfrac{52.5-50}{0.809}=\dfrac{2.5}{0.809}=3.09$

The null hypothesis is rejected, as z>zc and falls in the rejection region.

b. If the sample mean is M=51, the test statistic is:

$z=\dfrac{M-\mu}{\sigma_M}=\dfrac{51-50}{0.809}=\dfrac{1}{0.809}=1.24$

The null hypothesis failed to be rejected, as z<zc and falls in the acceptance region.

c. If the sample mean is M=51.8, the test statistic is:

$z=\dfrac{M-\mu}{\sigma_M}=\dfrac{51.8-50}{0.809}=\dfrac{1.8}{0.809}=2.22$

The null hypothesis is rejected, as z>zc and falls in the rejection region.

8 0

3 years ago

888 divided by 8 and 574 divided by 7

Reil [10]

Answer:

111 & 82

Step-by-step explanation:

888/8=111

574/7=82

5 0

2 years ago

Read 2 more answers

The area of a circle (A) is given by the formula A= pi*r to the second power, where r is the radius. The formula to find r is _.

podryga [215]

Answer:

The correct option for the first blank is A. (A/pi) to the power of 1/2

The correct option for the second blank is A. 4.15

Step-by-step explanation:

1. Let's review the information provided to us to answer the questions correctly:

Area of a circle (A) = π * r², where r = radius

2. The formula to find r is ________________:

A = π * r²

r² = A/π

√r² = √ A/π

r = √A/π

r = A/π∧(1/2) or (A/pi) to the power of 1/2.

The correct option for the first blank is A. (A/pi) to the power of 1/2

3. if A = 54 centimeters squared, and pi = 22/7, r is _ centimeters.

We use the formula we got for the first blank, this way:

r = (A/pi) to the power of 1/2

Replacing with the real values, we have:

r = (54/(22/7)) to the power of 1/2

r = 17.2 to the power of 1/2

r = √17.2 = 4.15 (Rounding to the next hundredth)

The correct option for the second blank is A. 4.15

3 0

2 years ago