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Let the height be x:- If: 0.5*(8+20)*x = 98 square units Then: x = 98*2/8+20 => x = 7 Therefore height of the trapezoid is: 7 units Check: 0.5*(8+20)*7 = 98 square units
If you mean to divide one fraction by another, the easiest is to multiply your numerator fraction by the reciprocal of your denominator fraction. For example, if: x = (a / b) / (c / d) then: x = (ad)/(bc)
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If fraction X = a/b, and fraction Y = c/d, you can 'flip' the one you're dividing by (take the inverse) then X/Y which is (a/b)/(c/d) = (a/b)*(d/c) =[a*d] / [b*c] For mixed numbers, it is best to convert to an improper fraction, then do the same procedure as above, I think.
Int = 3x^(2) dy y = 3x^(3) / 3 + c y = x^(3) + C