Asked by PhantomGirl
The equation a = 640s gives the relationship between s square miles and a acres. Pam owns 7.5 square miles of farmland. How many acres does she own?
A. 480 acres
B. 11.72 acres
C. 4,800 acres
D. 1.17 acres
A. 480 acres
B. 11.72 acres
C. 4,800 acres
D. 1.17 acres
Answers
Answered by
Damon
640 acres / 1 mi^2
7.5 mi^2 (640 acres / 1 mi^2)
= 4,800 acres
note I arranged the conversion factor so it had acres on the top and mi^2 on the bottom
If I wanted to go the other way, from acres to mi^2 I would do it upside down. It is the same top and bottom (640 acres = 1 mi^s)
so all it changes is the language :)
Just do it so the units you do not want cancel. mi^2 * (anythings/mi^2) = anythings
7.5 mi^2 (640 acres / 1 mi^2)
= 4,800 acres
note I arranged the conversion factor so it had acres on the top and mi^2 on the bottom
If I wanted to go the other way, from acres to mi^2 I would do it upside down. It is the same top and bottom (640 acres = 1 mi^s)
so all it changes is the language :)
Just do it so the units you do not want cancel. mi^2 * (anythings/mi^2) = anythings
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