Problema Solution
A varies jointly as r and q^2. When r=2 and q=5, A=150 Find A when r is 3 and q is 3
Answer provided by our tutors
A varies jointly as r and q^2 means:
A = K*(r*q^2), where K is constant
When r=2 and q=5, A=150 or:
150 = K*(2*5^2)
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click here to see the equation solved for K
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K = 3
The equation for A is:
A = 3*(r*q^2)
For r=3 and q=3 we have:
A = 3*3*3^2
A = 81
When r is 3 and q is 3, A is 81.