Question 1197996
18.The length (W) of a radio wave varies jointly 
as the square root of the inductance (L) and the capacitance (C).
E. W = k * √(LC)
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18. The weekly salary a woman earns (S) varies directly as the number of hours(h) she works
A. S = hk
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19. V varies 'inversely with m. If v = 10, when m = 1/3, find v when m is 10.
 Vm = 10*(1/3) = V*10
     1/3 = V
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20. N is 'inversely proportional to t + 3. if t = 1 when n = 3, find t when n = 2.
   N(t+3) =  3*4 = 2*(t+3)
     12-6 = 2t
        3 = t