If y varies directly as x and y = 144 when x = 8, find y when x = 4.
1 answer:
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-16t^2+400=0
16t^2=400
take square root on both sides.
4t=20
t=20/4
t=5
-16t^2+400=0
16t^2=400
take square root on both sides.
4t=20
t=20/4
t=5