## kimye21 3 years ago The length of a rectangle is 3 inches more than three times the width. The perimeter is 78 inches. Find the length and width.

1. Shironlom

|dw:1348709556519:dw|

2. Mertsj

|dw:1348710092420:dw|

3. Mertsj

Add all the sides and set it equal to 78

4. kimye21

how do i get the length

5. Mertsj

Did you find w, the width?

6. kimye21

i got 25 for the width

7. Mertsj

How did you get that?

8. kimye21

i added the sides like said

9. kimye21

3w+3+w=78

10. kimye21

is that wrong

11. Mertsj

|dw:1348710695880:dw|

12. Mertsj

You must add ALL FOUR sides to get the perimeter.

13. kimye21

how do i fond the length

14. kimye21

find

15. Mertsj

Look at the picture. The width is w and the length is 3w + 3

16. kimye21

so i just plug in the width and i get my answer

17. Mertsj

What is w?

18. kimye21

9

19. Mertsj

What is 3w?

20. kimye21

do u mean 3*9 or 3w more than the width

21. Mertsj

3w means 3 times w so if w is 9 then 3w means 3 times 9 which is 27. So 3w = 27. Now what is 3w + 3?

22. kimye21

30

23. Mertsj

So what is the length of the rectangle?

24. kimye21

w is 9 and the length is 30

25. Mertsj

Good job!!

26. Mertsj

Does that make the perimeter 78?