Question

The perimeter of a rectangle is 38m. The length is 10m more than twice the width. Find the demensions.
What is the lenght?
?=m
Simplify your answer

Answer 1

6

Answer 2

sorry, 16m

Answer 3

thanks

Answer 4

try setting up the equations: you know that the perimeter of a box is twice the length + twice the width

Answer 5

so let's use w for width and l for length
we have that 2w+2l = 38

Answer 6

but you are told that the length is 10 more than twice the width...so can you write that in equation form? i'll get you started....
length = 2 times width plus 10 (<=== write that in equation form)

Answer 7

what is the width I got -L+19

Answer 8

so you have w = -L + 19?

Answer 9

try plugging in your length...we know length is equal to 16

Answer 10

what do you get?

Answer 11

so... w = -(16) + 19 = ?

Answer 12

3

Answer 13

correct
test your answer...does everything work out?

Answer 14

remember our original idea....that 2*length + 2*width = 38, your perimeter