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OpenStudy (anonymous):
OpenStudy (mathstudent55):
|dw:1388959787658:dw|
OpenStudy (mathstudent55):
Since you are dealing with similar triangles, you need a proportion.
\(\dfrac{7}{56} = \dfrac{9}{x} \)
OpenStudy (mathstudent55):
|dw:1388959897276:dw|
OpenStudy (mathstudent55):
Reduce the fraction on the left side.
Then cross multiply to solve for x.
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OpenStudy (anonymous):
WAT
OpenStudy (anonymous):
@kelliegirl33
OpenStudy (anonymous):
HELP @nikato
OpenStudy (nikato):
Proportion agains
OpenStudy (anonymous):
YES
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OpenStudy (nikato):
7 / 9 = 56 / x . Solve for x
OpenStudy (anonymous):
6.22222
OpenStudy (anonymous):
56/9
OpenStudy (nikato):
Cross multiply.
So 56(9) = 7x
OpenStudy (anonymous):
IT EQAUL 6.2222
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OpenStudy (anonymous):
56(9) = 7x
504 = 7x
504/7 = x
72 = x
OpenStudy (nikato):
No, what's 56 x 9
OpenStudy (anonymous):
504
OpenStudy (anonymous):
now divide by 7 to get x by itself
OpenStudy (anonymous):
72
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OpenStudy (nikato):
Yes
OpenStudy (anonymous):
you got it :)
OpenStudy (anonymous):
OpenStudy (anonymous):
I NEED HELP WIT 16
OpenStudy (nikato):
I don't think any of the answers are similar
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OpenStudy (nikato):
The closest would be A with a ratio of 2/3, I guess.
Do u know @kelliegirl33 ?
OpenStudy (anonymous):
OK
OpenStudy (anonymous):
THX
OpenStudy (anonymous):
well...the area is 1/2bh , so the area of triangle drawn is 10.
none of the other triangles have an area of 10.
I would go with C because Ronnie's triangle is 1 cm smaller then the one already drawn.