levin69
07.01.2020 •
Mathematics
Martha is putting a wallpaper border along the top of four walls in her bedroom. the room is rectangle that measures 12 ft. by 10ft. one package of wallpaper border is 9 ft long. how many packages does she need? need answer asap
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Ответ:
or
step-by-step explanation:
we need to solve for 'x' the following equation:
we have that:
⇒
⇒ ⇒
factorizing, we get that:
⇒
then, the solutions are: or
nothing extraneous has been found!