Question

The width of a rectangle is half the length. The perimeter of the rectangle is 54 in. What is the length of the rectangle?
a.
6 in.
c.
18 in.
b.
9 in.
d.
36 in.

Answer 1

P = 2L + 2W

Answer 2

then you have
P = 54
L = 2L
W = 2 (1/2L)

Answer 3

so you solve it like this
2L +2(1/2L) = 54 solve for L

Answer 4

bleh i still dunno

Answer 5

ok, that is the same as
2L + L = 54 just because 2(1/2L) = 1L
can you take it from there ?

Answer 6

mhm ok thnx

Answer 7

Do you know how to solve for L ??

Answer 8

mhmm now i do

Answer 9

just add 2L + L = 54
then you have
3L = 54 , then divide by 3, so what do you get ??

Answer 10

i had got 18

Answer 11

good job

Answer 12

ty :P