annam25 annam25
  • 03-11-2020
  • Mathematics
contestada

20. A rectangle has an area of 45 cm². The length is one cm less than twice the width. Find the dimensions of
the rectangle.

Respuesta :

jonesjrroberte jonesjrroberte
  • 03-11-2020
Width = 5, length = 9

Area = length * width

length = (2 * width) - 1

sub equation for length

45 = (2w - 1) * w
45 = 2w^2 - w
2w^2 - w - 45 = 0
(2w - 9)(w - 5)
2w - 9 = 0
w = 9/2, l = 8 no

w -5 = 0
w = 5, l = 9 yes
Answer Link

Otras preguntas

Who let the investigation that resulted in Elgar Hiss being convicted of perjury
i need help with both of these. i need an answer fast please :)
For an advertising promotion, an auto dealer hands out 1000 lottery tickets with a prize of a new car worth $25,000. for someone with a single ticket, what is t
A sea bird is 28 meters above the surface of the ocean. What is it’s Elevation
Question 3 , help please !
jane brought x shirts for $20 each and y skirts for $25 each she spent $210 in all. which equation represents this situation 2 A. 20+x+25+y=210 B. 25+20+xy=210
Emily buys a toaster during the sale of 10% off if Ellen pays $36 what was the original price?
During percussion, a dull tone is expected to be heard over:
How do I find the value of WQ
How much does a trumpet weigh?