Question 1101307: express the statement as a formula that involves the given variables and a proportionality constant k, and then determine the value of k from the given conditions. a) s varies directly as t. if t=5, the s=18 b) y is directly proportional to x and inversely proportional to the square of z. if x= 4 and z=3, then y=16
Answer by richwmiller(17219)   (Show Source):
You can put this solution on YOUR website! express the statement as a formula that involves the given variables and a proportionality constant k, and then determine the value of k from the given conditions. a) s varies directly as t. if t=5, the s=18 b) y is directly proportional to x and inversely proportional to the square of z. if x= 4 and z=3, then y=16
a)
s=kt
18=5k
k=18/5
b)
y=(kx)/z^2
16=(4k)/3^2
divide by 4
4=k/9
k=36
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