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tayler_miller 3 years ago GEOMETRY HELP PLEASE.

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1. tayler_miller

LMNO is a parallelogram.If NM = x+15 and OL = 4x +6, find the value of x and then find NM and OL.

2. snowballhockey

About what

3. studyopen101

Well, since it is a parallelogram, you set NM = OL. Then you would get x=3. Each side would be 18.

4. tayler_miller

it looks like this|dw:1325244073059:dw|

5. tayler_miller

so whats the valuce of x?

6. snowballhockey

idk i am in 6ht grade so sorry

7. tayler_miller

oh its okay (:

8. cazil

NM = x+15 and OL = 4x +6 And we know that NM = OL because a parallelogram is a quadrilateral that has two pairs of parallel sides. Solve for x x+15=4x+6

9. tayler_miller

so what does x equal ?

10. cazil

You have to solve the equation x+15=4x+6 Isolate the variable x on one side (what ever you do to one side of an equation you have to do to the other) subtract x from both sides x-x+15=4x-x+6 15=3x+6 subtract 6 from both sides 15-6=3x+6-6 11=3x divide both sides by 3 $\frac{11}{3} = \frac{3x}{3}$ and you are left with 11/3 = x

11. tayler_miller

but im left with afraction so do i have to divide 11 by 3 ?

12. cazil

You can use the fraction in NM = x+15 and OL = 4x +6 $NM=\frac{11}{3} + 15$

13. cazil

Do you know how to add fractions with unlike denominators?

14. snowballhockey

no

15. cazil

$\frac{11}{3}+\frac{15}{1}$

16. snowballhockey

Do ththis

17. snowballhockey

|dw:1325278095468:dw|

18. snowballhockey

ok

19. cazil

http://www.khanacademy.org/video/adding-fractions-with-unlike-denominators?playlist=Developmental+Math Khan has a good video on how to do it.

20. snowballhockey

well figure that out

21. snowballhockey

no the problem i did is hard figure it out

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