lajuve111 lajuve111

03-04-2017
Mathematics

contestada

The area of a poster board is (x2 + 9x − 10) square inches. Find the dimensions of the poster board if x = 13.

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KitKat69 KitKat69

03-04-2017

If you know what x equals and the formula you would just put what X equals in for X: (13squared+9(13)-10). 13•13=169. 9•13=117. So 169+117-10=276 :)

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