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3 years ago

HELP ASAP PLSSSSSSSSSSSS

Mathematics

2 answers:

ludmilkaskok [199]3 years ago

8 0

Answer:

f = .39

Step-by-step explanation:

d (v) = 2.15 v^2 / (64.4 f)

v = 40

d = 138

substitute these in

138 = 2.15 (40)^2 / (64.4 *f)

simplify

138 = 2.15 (*1600) / (64.4 *f)

138 = 3440 / (64.4 *f)

multiply each side by 64.4f

138 * 64.4 f = 3440

8887.2 f = 3440

divide by 8887.2

8887.2 f /8887.2= 3440/8887.2

f=.38707

to the nearest hundredth

f = .39

mario62 [17]3 years ago

5 0

Answer:

it is f = 0.39

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