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3 years ago

SHARON MAKES $32 FOR 2 HOURS.

Mathematics

1 answer:

zhannawk [14.2K]3 years ago

8 0

Answer:

See below.

Step-by-step explanation:

$32/( 2 hours) = $16/hour

A) $16/hour * 8 hours = $128

B) $16/hour * 20 hours = $320

C) $32/(2 hours) = $16/hour

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Given the question in the image, the following are the solution steps to answer the question.

STEP 1: Explain the formula to use

Using the cosine rule which states that:

$z^2=x^2+y^2-2xy\cos Z$

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$\begin{gathered} By\text{ substitution,} \\ z^2=4^2+6^2-2(4)(6)\cos41 \\ z^2=16+36-48cos41 \\ z^2=52-36.22605985 \\ z^2=15.77394015 \\ z=\sqrt{15.77394015} \\ z=3.971641997 \\ z\approx4.0 \end{gathered}$

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