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2 years ago

Explain the difference between a rate and a unit rate.

2 answers:

8 0

Answer: A rate is a ratio which is a comparison of two numbers or measurements. A unit rate are rates that are expressed as a quantity of 1 for example: The guy runs 22 miles per hour that’s a unit rate because it’s comparing something to a quantity of 1

Step-by-step explanation:

Anna35 [415]2 years ago

3 0

Answer:

Step-by-step explanation:

A rate is a special ratio in which the two terms are in different units. For example, if a 12-ounce can of corn costs 69¢, the rate is 69¢ for 12 ounces. When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates.

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Suppose speeds of vehicles traveling on a highway have an unknown distribution with mean 63 and standard deviation 4 miles per h

Mashutka [201]

Answer:

The standard deviation for the sample mean distribution=0.603

Step-by-step explanation:

We are given that

Mean, $\mu=63$

Standard deviation, $\sigma=4$

n=44

We have to find the standard deviation for the sample mean distribution using Central Limit Theorem for Means.

Standard deviation for the sample mean distribution

$\sigma_x=\frac{\sigma}{\sqrt{n}}$

Using the formula

$\sigma_x=\frac{4}{\sqrt{44}}$

$\sigma_x=\frac{4}{\sqrt{2\times 2\times 11}}$

$\sigma_x=\frac{4}{2\sqrt{11}}$

$\sigma_x=\frac{2}{\sqrt{11}}$

$\sigma_x=0.603$

Hence, the standard deviation for the sample mean distribution=0.603

6 0

2 years ago

What is the area of the parallelogram?

Anarel [89]

Answer:

7 and one-half feet squared

Step-by-step explanation:

3 x 2.5 = 7.5

7 0

2 years ago

3/4 + 5/4 =?<br>I need help ASAP .

Hitman42 [59]

$\dfrac{3}{4}+\dfrac{5}{4}=\dfrac{3+5}{4}=\dfrac{8}{4}=2$

8 0

3 years ago

George walked around the entire perimeter of his rectangular garden. The length of his garden was 12 yards and the width was 8 y

Marina86 [1]

To find perimeter, you use this equation for a parallelogram:
2l+2w=p
Let’s not put the numbers in,
2(12)+2(8)
24+16
40
So b, 40 yards is how much he walked.

To

8 0

2 years ago

John's goal is to have more then -7 dollars in his bank account by the end of the month.The variable d is the number of dollars

Alona [7]

Answer:

i need more info

Step-by-step explanation:

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2 years ago

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