the length of a rectangle is 3in longer than the width and that the perimeter of the rectangle is 78. Set up an equation involving only W, the width of the rectangle

Question

aravindg · Answer

$$\huge \text{WELCOME TO OPENSTUDY!}$$

anonymous · Answer

thank you

ajprincess · Answer

Let the width of the rectangle be w and length be l.
l=w+3
Perimeter=2(l+w)
78=2(w+3+w)
Try simplfyng this and u will get the required equation.
Can u do it @nburgher?

anonymous · Answer

the width would be 18 and length is 21

ajprincess · Answer

ya u r right:) bt u need to write only the equation

anonymous · Answer

ok. Using the same length from above, find a new perimeter if the new width is 4 more than one-third of the length

ajprincess · Answer

length is 21. what is 1/3 of it?

ajprincess · Answer

(1/3)*21=?

anonymous · Answer

7

ajprincess · Answer

new width is 4 more than 7. so what will be it?

anonymous · Answer

so the equation would be P=2(21)+2(7+4)?

ajprincess · Answer

ya:)

anonymous · Answer

thank you very much. I have been stuck on this for days

ajprincess · Answer

welcome:)