## anonymous one year ago help pls! Determine if the proportion is true. If it is not true, correct the error. v/x = x/v+w A. true B. false, it should be w/x = x/v+w C. false, it should be v/y = y/v+w D. false, it should be y/x = x/v+w

1. anonymous

2. anonymous

@jim_thompson5910

3. anonymous

@Vocaloid hlp

4. jim_thompson5910

let me think

5. jim_thompson5910

|dw:1436931408196:dw|

6. jim_thompson5910

lets say this angle is 30 degrees |dw:1436931466044:dw|

7. jim_thompson5910

what is this angle here? |dw:1436931489620:dw|

8. anonymous

30?

9. jim_thompson5910

30 + _____ = 90 fill in the blank

10. anonymous

ok 60

11. jim_thompson5910

|dw:1436931571369:dw|

12. jim_thompson5910

|dw:1436931579069:dw|

13. anonymous

oo i have no idea.. 60???

14. jim_thompson5910

60 plus something gives 90

15. anonymous

30

16. anonymous

the total of those two is 120 right

17. jim_thompson5910

|dw:1436931745719:dw|

18. jim_thompson5910

|dw:1436931757685:dw|

19. jim_thompson5910

since w and x correspond, we know that w/x is part of the proportion

20. anonymous

so..

21. jim_thompson5910

x is a hypotenuse of this right triangle |dw:1436931876641:dw|

22. jim_thompson5910

w+v is the hypotenuse of this right triangle |dw:1436931905183:dw|

23. anonymous

so its false

24. jim_thompson5910

yes and it should be $\Large \frac{w}{x} = \frac{x}{v+w}$ because we have x and w corresponding, along with x and v+w pairing up