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2 years ago

Jade can travel 42 miles in 4 hours. Please calculate Jade's rate of speed. (round to 2 decimal places)

Mathematics

2 answers:

zubka84 [21]2 years ago

8 0

C. 10.5 miles per hour

mel-nik [20]2 years ago

7 0

C. 10.5 miles per hour

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Hi, there!

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To find the missing side length of this triangle (which is a <em>right</em> triangle), we'll use Pythagoras' Theorem.

$-\!\!\!-\!\!\!-\!\!\!\longrightarrow\boldsymbol{a^2+b^2=c^2}$

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$\textsc{legs:}\begin{cases} \bold{a}\\\bold{b} \end{cases}$

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$\bold{4+784=c^2}$ $-\!\!\!-\!\!\!-\!\!\!\longrightarrow$ add the numbers

$\bold{788=c^2}$ $-\!\!\!-\!\!\!-\!\!\!\longrightarrow$ square root both sides

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Hope the answer - and explanation - made sense,

happy studying!!

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