kaitlynnjoseph1858 kaitlynnjoseph1858

19-04-2018
Mathematics

contestada

The length of a rectangle is 2 cm longer than its width if the perimetier of the rectangle is 44cm, find its area

Respuesta :

ryanpost10 ryanpost10

23-04-2018

l=w+2 and 2w+2l=44

substitute equation for length in perimeter equation

2w+2(w+2)=44
2w+2w+4=44
4w+4=44
4w=40
w=10

substitute width into length equation to get length

l=10+2
l=12

a=lw
a=12*10
a=120 cm^2

Answer Link

Otras preguntas

what was the main aim of treaty of vienna 1815

DNA analysis is a technique that is often used in order to determine if an offspring is related to a parent. If the banding pattern in a baby shows a high corre

Which of the following is not a parenting style? A. authoritarian B. disorganized C. authoritative D. permissive

Two rectangular prisms have the same volume. The area of the base of the blue prism is 4 1/8 square units. The area of the base of the red prism is one-half tha

Read the passage below and answer the question. On Juliet smile the autumn stars And windswept plains by Winchelsea, In summer on their sandy bars Her rivers lo

This is the most important idea of a reading passage or presentation.

Erin has been in college for 2 years and has decided that the major she has been studying isn't for her. changing her major and/or her college could result in

Research shows that a child is most likely to be a victim of bullying if the child is:

How did mass immigration and migration help accelerate urbanization

A fence must be built to enclose a rectangular area of 20,000 ftsquared. fencing material costs $ 1 per foot for the two sides facing north and south and $2 pe