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4 years ago

50 POINTS!! PLEASE HELP ME OUT AND I WILL GIVE BRAINLIEST TO BEST ANSWER THAT SHOWS STEPS! THANK YOU!!!!

Mathematics

2 answers:

svetoff [14.1K]3 years ago

8 0

Answer:

Not direct variation.

Step-by-step explanation:

To have direct variation, each division of a y value by its corresponding x value must give the same answer.

Look at x = 7, y = 11

Do y/x = 11/7 = 1.5714...

Now look at x = 8, y = 13

Do y/x = 13/8 = 1.625

Since the two divisions do not give equal results, this is not direct variation.

zzz [600]3 years ago

4 0

Answer:

it is not a direct variation

Step-by-step explanation:

To have a direct variation

y/x = k for all values of x and y

y/x = 11/7

y/x = 13/8

y/x = 15/9 = 5/3

y/x = 17/10

11/7 does not equal 13/8 so it is not a direct variation

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3 years ago

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Maru [420]

Using proportions, it is found that the estimate of the the per capita consumption from 2011 was of 29.25 gallons.

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2 years ago

N 4n3 2m 6m 5n 2n<br> Identify like terms

Juliette [100K]

Answer:

2n, 5n, n

2m, 6m

4n3

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8 0

3 years ago

A researcher reports the following confidence interval for a comparison of the difference between two groups: 95% CI −12.0 [−30.

Lapatulllka [165]

Answer:

Decision: Support the null hypothesis.

Sample mean: -12

Step-by-step explanation:

Hello!

When deciding with a Confidence interval you have to keep in mind that the following conditions are met:

The hypothesis and the interval are made for the same parameter.
The hypothesis should be two-tailed.
The interval and the test have to have complementary confidence and signification levels. This means that if the interval is made with 1 - α= 0.95 the hypothesis test should be made with α= 0.05.

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If the interval doesn't contain the cero, there is a difference between the two means, so you reject the null hypothesis.

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Estimator ± Margin of error

This means that the sample mean (point estimate of the population mean) is in the middle of the calculated interval. To know it's the value you have to do a simple calculation:

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I hope it helps!

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4 years ago

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marta [7]

Answer:

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7 0

3 years ago