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2 years ago

13

Amy wants to run the 26 miles of the marathon in 4.5 hours. at what rate will she have to run to reach thisbgoal??

1 answer:

Molodets [167]2 years ago

5 0

The answer is:
____________________________
5.778 mi/ h;
→ or; write as: 5 ⁷/₉ mph {"miles per hour"}.
______________________________________
Explanation:
_____________________________________

We shall solve in miles ("mi.") per hour ("h"); denoted as "mi / h" ; or sometimes, "mph".
______________________________________

Given 26 mi / 4.5 h ; we want to solve for the number of miles (mi) per unit hour (h),
________________________________
The answer is (26/ 4.5) mi / h l
______________________________
26 ÷ 4.5 = 5.7777777777777778→ Round to: 5.778 mi/ h;
→ or; write as: 5 ⁷/₉ mi /h
_____________________________________________________

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Step-by-step explanation:

<em>Look at the picture.</em>

We have

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The formula of an area of a trapezoid:

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Substitute:

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The formula of an area of a right triangle:

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Substitute:

$A_{III}=\dfrac{(9)(6)}{2}=\dfrac{54}{2}=27\ cm^2$

The area of the shape:

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