Question

Convert each rate using dimensional analysis. Round to the nearest tenth, if necessary.

55 mi / h = ____ ft / s
a.
8.7
c.
80.7
b.
26.9
d.
806.7

Answer 1

here is the unity that changes:

miles to feet: \(\frac{5280 ft}{1 mile} \)
hours to seconds: \(\frac{1hour}{60second} \)

Answer 2

now what do I do?

Answer 3

@dpaInc

Answer 4

oops...
\(\large \frac{55miles}{1hour} \cdot \frac{5280feet}{1miles} \cdot \frac{1 hour}{3600 seconds} \)

Answer 5

\(\large \frac{55 \cancel{miles}}{1 \cancel{hour}} \cdot \frac{52870feet}{1 \cancel{miles}} \cdot \frac{1 \cancel{hour}}{3600 seconds} \)