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17 September, 16:34

Find the value of x when the area of a triangle is 22 in2 and has a base of 3x-1 and height of x.

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  1. 17 September, 16:47
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    The formula for the area of a triangle is (1/2) bh = A

    when we plug in the numbers, we get (1/2) (3x-1) x = A

    using the distributive property we get (1.5x -.5) x = A

    Then its 1.5x^2 -.5x = A

    then if we factor out 0.5x we get 0.5x (3x-1) = A

    then with the zero product property, 0.5x can equal 0 and x would need to equal 0.

    if 3x-1 = 0, then 3x = 1 then x = 1/3. so our answer would be 1/3 I'm pretty sure because a length cannot be 0
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