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When 4 is added to a certain number the result is 60X the reciprocal of the number find the number?
Wiki User
∙ 12y ago
-10 & 6
Let x be the certain number, so the reciprocal is (1/x). You can then set up the following equation to solve for x:
x+4 = 60*(1/X)
x+4 = 60/x
x*(x+4) =x*(60/x)
x2+4x = 60
x2 + 4x - 60 =0
(x+10)(x-6) = 0
x+10 = 0 & x-6=0
So, x=-10 & x=6
Wiki User
∙ 12y ago
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