2 years ago

The diagram shows a solid metal cuboid.

Mathematics

1 answer:

Elodia [21]2 years ago

3 0

Someone told me if I answer a question I can watch videos to unlock my answer sorry

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5 pounds of apples cost $12. How many pounds of apples can you buy for $1.

Diano4ka-milaya [45]

Answer:

5/12 or 0.41666667 pound

Step-by-step explanation:

Set up the equation as 5/12=x/1 and cross multiply. Then you will get 12x=5. Divide both sides by 12 and then you will get 5/12.

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3 years ago

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Male and female high school students reported how many hours they worked each week in summer jobs. The data is represented in th

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I'm 99% sure the answer is A

Step-by-step explanation:

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2 years ago

Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.5 parts

Hunter-Best [27]

Answer:

The value of the test statistic is $t = 2.1$

Step-by-step explanation:

Our test statistic is:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the expected value, $\sigma$ is the standard deviation and n is the size of the sample.

The level of ozone normally found is 7.5 parts/million (ppm).

This means that $\mu = 7.5$

The mean of 24 samples is 7.8 ppm with a standard deviation of 0.7.

This means that $X = 7.8, \sigma = 0.7, n = 24$

Test Statistic:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{7.8 - 7.5}{\frac{0.7}{\sqrt{24}}}$

$t = 2.1$

The value of the test statistic is $t = 2.1$

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3 years ago

What is -36 divided by 9 plus -5 minus 6

brilliants [131]

-36 divided by 9 plus -5 minus 6 is equal to -15

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Compare the y-intercepts and the rates of change of the following items.

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The answer is C: They are all the same.

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