## brucebaner one year ago help me with this math plz help me

1. brucebaner

2. brucebaner

@sammixboo

3. brucebaner

@EclipsedStar

4. brucebaner

@ikram002p

5. brucebaner

@ybarrap

6. brucebaner

@ybarrap

7. brucebaner

@Michele_Laino

8. Godlovesme

i got u, use the pythagorean theorem

9. Godlovesme

ever heard of it? :P

10. brucebaner

no

11. brucebaner

im new to this

12. Godlovesme

ohhh okay heres the formula $a^2+b^2=c^2$

13. brucebaner

kk

14. shamim

Do u know base , perpendicular, hypotenuse of a right angle triangle?

15. Godlovesme

|dw:1434399693304:dw|

16. Godlovesme

u can mix up the legs ( a and b in the formula) it doesnt matter

17. brucebaner

yes i think?

18. Godlovesme

|dw:1434399839501:dw| so in this case we are solving for X, which is the hypotenuse

19. Godlovesme

so our a can be either 7 or 4 and we're looking for c $4^2 + 7^2 = c^2$ ^^ that's after we substitute out givens

20. Godlovesme

make sense? c:

21. brucebaner

yes

22. Godlovesme

$4^2 + 7^2 = c^2$ $16 + 49 = c^2$ $65 = c^2$

23. Godlovesme

try to do the last step c;

24. Godlovesme

*hint* c is squared right? but we're looking for c not c^2

25. Godlovesme

take of the square root! :D

26. Godlovesme

$\sqrt{65} = \sqrt{c}$ that should give u x :)