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What is the constant of proportionality in miles per hour?
a.) 0.85 miles per hour
.85
b. 55 miles per hour
IS112.15
c. 60 miles per hour 4
120
d. 51 miles per hour
15
75
8

What is the constant of proportionality in miles per hour a 085 miles per hour 85 b 55 miles per hour IS11215 c 60 miles per hour 4 120 d 51 miles per hour 15 class=

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sqdancefan

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Answer:

  (d)  51 miles per hour

Step-by-step explanation:

The constant of proportionality can be found by dividing the distance by the time. It is convenient to choose a time that makes this division simple. We choose 30 min = 1/2 hour.

  (25.5 mi)/(1/2 h) = 2(25.5) mi/h = 51 mi/h

The constant of proportionality is 51 miles per hour.

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