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March 28, 2017

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the base of a triangle is 5cm greater than the height. The area is 33cm^2. What is the height and the length of the base?

  • algebra - ,

    33=x(x+5)
    find x, the height, first.

    x^2+5x-33=0
    use the quadratic equation


    x=-5/2 +-1/2 sqrt (25+132)
    = -2.5+1/2 sqrt157
    ignore the negative answer.

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