SOLUTION: U Varies directly with v. U is 91 when v is 14. find U when V is 22

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Question 1177167: U Varies directly with v. U is 91 when v is 14. find U when V is 22
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

U varies directly with v.
U=k%2Av
if+U is 91 when v is 14, we have
91=k%2A14.........solve for constant k
k=91%2F14
k=13%2F2
so, formula is
U=%2813%2F2%29%2Av


find U when v is 22
U=%2813%2F2%29%2A22
U=%2813%2Fcross%282%29%29%2Across%2822%2911
U=13%2A11
U=143