baileyneedshelp3305 baileyneedshelp3305

02-03-2018
Mathematics

contestada

The length of a rectangle is 4 cm longer than the width. if the perimeter of the rectangle is 20 centimeters, what is the area of the rectangle?

Respuesta :

mysticaldogg mysticaldogg

02-03-2018

P=2(w)+2(l)

length=x+4
width=x

2(x)+2(x+4)=20
use the distributive property

2x+2x+8=20
combine like terms

4x+8=20
subtract 8 from both sides

4x=12
divide both sides by 4 to isolate x

x=3

Length=x+4=3+4= 7
Width= 3

Answer Link

Otras preguntas

Can somebody help me make sure this is correct

"human beings should always act in the interests of others." is this _________

The line segments of a cube include edges, the diagonals of the faces, and the diagonals through the interior of the cube. Which is the longest? Which is the s

17.What happened as a result of the Articles of Confederation?

This secretes digestive enzymes and buffers which neutralize the stomach acids

Jorge finds that 56% of his 75 classmates like salsa music and 80% of his 60 relatives like salsa music. How many more of Jorge’s relatives, as compared to his

solve each triangle. Round your answers to the nearest tenth

Explain why lithium is a strong reducing agent, whereas fluorine is a strong oxidizing agent.

Choose all that apply It appears that most of the world's population growth is taking place in developing countries. Predict what effects this will likely have.

the lines from the boxes show the positions of two of the parts that are present in both cells in the boxes write the names of these two parts