Question

HELP WITH ALGEBRA?!! WILL MEDAL + FAN!!!

The length of a rectangle is 7 mm longer than its width. Its perimeter is more than 62 mm. Let w equal the width of the rectangle.

The length has to be greater than ____ mm.

Answer 1

you should already know that the perimeter is the length times 2 plus the width times 2. using this logic, you can construct a formula by substituting the information that they have given you.
to make it easier to answer change the width to x

42=2x+2(x+5)
expand the brackets- 42=2x+2x+10
collect the like terms- 4x-32=0
rearrange- 4x=32
remember your x is you width so the formula for the width would be width=8

to find the length all you need to do is add 5 to the width so the length is 13

if you want to check this to make sure it is correct just substitute the values into the formula for the perimeter= 2(lenght+width)
2(13+8) 26+16=42

Answer 2

Thanks @champsionsaregreat!!!

Answer 3

thx

Answer 4

thx for the faning