a = kb2 / c2
a = 210 when b = 4 and c = 7 So, 210 = 16k / 49
Solve for k and then find a when b = 7 and c = 5.
Joana O.
asked 12/14/22a varies directly as the square of b and inversely as the square of c. If a=210 when b=4 and c=7, find a if b=7 and c=5. Round your answer to two decimal places if necessary.
a = kb2 / c2
a = 210 when b = 4 and c = 7 So, 210 = 16k / 49
Solve for k and then find a when b = 7 and c = 5.
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