Sara338 Sara338

02-06-2017
Mathematics

contestada

The width of a rectangle is 8 units less than the length. The area of the rectangle is 9 units. What is the length, in units, of the rectangle?

Respuesta :

apologiabiology apologiabiology

02-06-2017

w=l-8
a=9
a=lw
9=(l-8)l
9=l²-8l
0=l²-8l-9
factor
0=(l-9)(l+1)
set to zero
l-9=0
l=9
l+1=0
l=-1, false length can't be negative

l=9
the length is 9 units long

Answer Link

Otras preguntas

1cm +4cm+2cm+1.5cm+2.5cmfind its perimeter

I need help with this also I had was to repost it again because someone deleted it

PLEASE HELP I DONT UNDERSTAND

Which statement is correct about the changes in fauna’s during one of these five major events

what does the slope of jessicas function represent? tyia

How to find factors of a number.

Question 4 (2 points) The author of document C chooses to mention the increasing number of bullet rounds used in order to convey... A his disgust for war B that

Find the coordinates of the other endpoint when you are given the midpoint (point M) and one of the endpoints (point P). P = (10, 6) and M = (-4, 8)

Question 1) Discuss how compounds in different types of organisms can be used to benefit people? ( Will Mark Brainliest).

Help pls! Thank you! WILL GUVE BRAINLIST IF RIGHG!