SOLUTION: The pressure exerted by a certain liquid at a given point varies directly as the depth of the point beneath the surface of the liquid. The pressure at 80 feet is 240 pounds per sq
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Question 1202295: The pressure exerted by a certain liquid at a given point varies directly as the depth of the point beneath the surface of the liquid. The pressure at 80 feet is 240 pounds per square inch. What is the pressure at 30 ​feet?
Found 2 solutions by Theo, josgarithmetic:
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
the formula in a direct variation type problem would be y = k * x
when y = 240 pounds per square inch of pressure and x = 80 feet below the surface, solve for k to get k = 240 / 80 = 3.
that's the constant of variation.
when the depth is 30 feet, the formula becomse y = 3 * 30 = 90 pounds per square inch of pressure.
that's your solution.
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
p pressure
d depth
k variation constant
but be aware what the units used here are.
At 30 feet,
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