3 years ago

A truck driver drove 120 miles in 13/5 hours. What was his speed in miles per hour?

Mathematics

1 answer:

Irina-Kira [14]3 years ago

7 0

Answer:

120 divided by (1 and 3/4) =

120 divided by 7/4 =

120/1 * 4/7 =

480 / 7 =

68 and 4/7 mph

Step-by-step explanation:

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

STEP 2: Write the given sides

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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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A truck driver drove 120 miles in 13/5 hours. What was his speed in miles per hour?​

A truck driver drove 120 miles in 13/5 hours. What was his speed in miles per hour?