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Ksenya-84 [330]
3 years ago
13

12) I can run 3.6 miles in 30 minutes. How far can I run in 1.5 hours?

Mathematics
1 answer:
raketka [301]3 years ago
3 0
1.5 hours=90 minutes

Because 90 minutes/ 30 minutes is 3, multiply 3.6 miles by 3 and get 10.8 miles as your final answer
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Every two triangles are similar. Therefore the sides of triangles are in proportion.

We have the equations:

1.

\dfrac{3}{5}=\dfrac{3+x}{20}    <em>cross multiply</em>

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--------------------------------------

2.

\dfrac{3}{4}=\dfrac{9}{y}      <em>cross multiply</em>

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\boxed{y=12}

------------------------------------------

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\boxed{u=24}

----------------------------------------------

4.

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3v=(4)(24)

3v=96      <em>divide both sides by 3</em>

\boxed{v=32}

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