chabelitotorrep6cxw6
chabelitotorrep6cxw6 chabelitotorrep6cxw6
  • 01-08-2019
  • Mathematics
contestada

Really need help on #15 please.

Really need help on 15 please class=

Respuesta :

MathPhys
MathPhys MathPhys
  • 01-08-2019

Step-by-step explanation:

Let's call L the length and W the width.  The length is 10 feet longer than the width, so:

L = W + 10

The area is the length times width, so:

119 = LW

Substituting:

119 = (W + 10) W

119 = W² + 10W

0 = W² + 10W − 119

0 = (W + 17) (W − 7)

W = -17 or 7

Since W must be positive, W = 7.

L = W + 10

L = 17

The length and width are 17 feet and 7 feet, respectively.

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