jordanpruitt16 jordanpruitt16
  • 20-06-2018
  • Mathematics
contestada

A rectangle length is 8cm more than three times it’s widith. The perimeter is 128 cm find the length.

Respuesta :

choixongdong
choixongdong choixongdong
  • 20-06-2018
let x = width
length is 8 cm more than three times it’s width so length = 3x + 8

Perimeter of a rectangle = 2(L + W)
so
128 = 2(x + 3x + 8) solve for x (width)
128 = 2(4x + 8)
  64 = 4x + 8
  4x = 56
    x = 14
width = 14 cm
length = 3(14) + 8 = 50 cm

Answer:
width   = 14 cm
length  = 50 cm

Answer Link

Otras preguntas

NoodleTools is a website that
It can be normal for a teen to feel tired after a busy day, but if a teen frequently has low energy, as well as decreased interest in daily life, he or she is d
Express 6.90909090909 . . . as a rational number, in the form [ p/q]
After four or five days the boys became great friends. Where should the comma be in the bold portion of the sentence? A. After four, or five days the boys be
What is the height, h, of the large triangle? Area of triangle = 108
The 2013 Walt Disney movie Frozen is a popular musical. Which Gorbman principle would best describe the music in this film? A) Film music provides invisibility.
The hole in the ozone layer has been brought about by anthropogenic emissions of _____.
What increases the number of calories used in a workout
can some one help me please
Hundreds of thousands of white South Africans are concerned only with holding on to white privilege. They believe that they would rather die holding on to it th