Question

a varies directly as the square of b and inversely as the square of c. If a=131 when b=4 and c=7 , find a if b=3 and c=9 . Round your answer to two decimal places if necessary.

Answer 1

Step-by-step explanation:You first use equation a= kb/c^2 and substitute values for a, b, and c. You now calculate k. Then use values of k (found in last step) and b=6 and c = 5 using again the equation a=kb/c^2 to find a. Answer is 54.96.