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3 years ago

Suzzy walks ¾ mile around the high school track in ½ hour. How far can she walk in 2 hours?

Mathematics

2 answers:

aleksley [76]3 years ago

6 0

Answer:

Step-by-step explanation:

3/4 + 3/4 = 6/4 = 1 1/2= 1.5 (this is one hour)

1.5 x 2 = 3

she can walk 3 miles in 2 hours.

labwork [276]3 years ago

4 0

Answer:

3 mi.

Step-by-step explanation:

Hullo! :D

Let's take a more slow way of solving this:

If Suzzy walks 3/4 mile in 1/2 hour, she will walk 3/4 × 2 miles in 1 hour. (because 1/2 × 2 = 1)

$\frac{3}{4}$ × 2 = $\frac{6}{4}$ = $\frac{3}{2}$

So Suzzy is walking at a rate of $\frac{3}{2}$ per hour.

Therefore, to find two hours, all we do is multiply $\frac{3}{2}$ by 2.

$\frac{3}{2}$ × 2 = 3.

So Suzzy can walk 3 miles in two hours.

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3 years ago

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3 years ago

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Answer:

Step-by-step explanation:

Confidence interval for the difference in the two proportions is written as

Difference in sample proportions ± margin of error

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x = 318

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To determine the z score, we subtract the confidence level from 100% to get α

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