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math 209

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Area of a sail. The area in square meters for a triangle is given by A(x)=x^2 +5x +6.
a.) Find A(5)
b) if the height of the sail is x+3 meters, then what is the length of the base of the sail when area is x^2 +5x+6m^2?

  • math 209 -

    Surely you can find the area of a triangle given the formula. A(5) means area when x is five.

    For the second, Area=1/2 base*height. You know ARea (x^2+5x+6), height is x+3, solve for base in terms of x.

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