dakodaharber12 dakodaharber12

13-01-2021
Mathematics

contestada

The surface of an office desk has an area of 18 square feet. Its perimeter is 18 feet. What are the dimensions of the desk?

Respuesta :

jayhutton05 jayhutton05

13-01-2021

Answer:

the dimensions are 3 and 6 feet

Step-by-step explanation:

xy=18

x+y=9

x=9-y

y(9-y)=18

-y^2+9y -18=0

y^2-9y+18=0

(y-6)(y-3)=0

if y=6, x=3

if y=3, x=6

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