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A is partly constant and partly varies as square of B when b=1 a=4¼ and when b=7 a=196¼, (a) find the equation connection a and b (b) find a when b=square root of 15/4

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Anonymous

  1. "A is partly constant and partly varies as square of B"
    ----> A = mB^2 + c
    when b = 1, A = 4.25
    4.25 = m + c

    when b=7 a=196¼
    196.25 = 49m + c

    subtract
    192 = 48m
    m = 4

    then 4.25 = 4 + c, c = 0.25

    A = 4B^2 + .25

    now you can state the actual equation, take it from here.

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    mathhelper

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