Question

What is the missing side length of the polygon if its perimeter is one hundred thirty-seven feet?

An irregular seven sided polygon with sides labeled:eighteen feet , 6 feet , seventeen feet , fifteen feet , forty feet , and twenty-one feet. The seventh side length is unknown.

eighteen feet

nineteen feet

twenty feet

twenty-one feet

Answer 1

@Lyssa123 @crazyblue @cwrw238 @Catseyeglint911

Answer 2

x = missing side

add up all the sides lengths = perimeter
15 + 17+6 + 18 + x + 21+40 = 137 or
x+(15 + 17+6 + 18 + 21+40) = 137 add up what is inside the parenthesis

Answer 3

so it is???

Answer 4

add those up and i will help if you still can not get it

Answer 5

ok give me a sec

Answer 6

i got 117

Answer 7

ok

x+117 = 137 to get x by itself we subtract both sides by 117

x+(117-117)=137-117

we get??

Answer 8

ohhh now i get it

Answer 9

thank you

Answer 10

good job!!