Sarah drove her car a distance of 517.4 km, and used 44.8 L of gasoline (petrol). What is her fuel efficiency in miles per gallon (milesgallon)? Hint: Start with

NumberkmnumberL×...continueconversi on...=milesgallon

Use the following facts:

1 km = 0.6214 mi
1 gal = 3.8 L

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36

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