irialjtr4oo4keage irialjtr4oo4keage

26-11-2016
Mathematics

contestada

For what values of x is the area of the rectangle greater than the perimeter?

the shortest sides are both 7, while the longer sides are x+2

Respuesta :

nobillionaireNobley nobillionaireNobley

30-11-2016

Area = 7(x + 2) = 7x + 14
Perimeter = 2(7 + x + 2) = 2(9 + x) = 18 + 2x
7x + 14 > 18 + 2x
7x - 2x > 18 - 14
5x > 4
x > 4/5

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