Question

Ok so the perimeter of a quadrilateral is 44 cm. The four sides are x+7, x+6, 3x-4, and x^2-3x. How many centimeters is each side? Please help! :)

Answer 1

@bibby

Answer 2

@Jamielynne

Answer 3

You add all for side teqogether and let them equal to 44 and then solve for x

Answer 4

idk sorry

Answer 5

but hear

Answer 6

i don't get it @phuong.tong

Answer 7

u add all the sides together

Answer 8

(x+7) +( x+6) + (3x -4) + (X^2- 3x) = 44. Solve for x

Answer 9

simplify
x^2 + 2x-35 = 0

Answer 10

now you factor it out and solve for x

Answer 11

chose one of the x value will work which will give you 44 as perimeter. (by testing)

Answer 12

um so to factor it do i have to find the greatest common factor?

Answer 13

Are you there? got it?

Answer 14

yeah im here

Answer 15

so would that be 2x(x+1)=35 for the factorization @phuong.tong ?

Answer 16

nope

Answer 17

After simplify you got
x^2 - 2x - 35 =0
Factor this out

Answer 18

(x-7) (x+5) = 0 Is it help?

Answer 19

oh
ok

Answer 20

good now?

Answer 21

x can not be negative

Answer 22

ok thanks,
but so what is the length of each side?

Answer 23

x=7

Answer 24

Substitu x = 7 into your equation to see if you get 44

Answer 25

ok thanks :)

Answer 26

nope it does not equal 44 :,( @phuong.tong

Answer 27

u there?

Answer 28

Sorry, my factor should be (x+7) (X-5) = 0
x= 5. Now it should work. I mess up the sign :)

Answer 29

oh it must be 5

Answer 30

ok thanks for the help

Answer 31

yes, it would give you total 44

Answer 32

You are welcome. Sorry, I messed up a little