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Mathematics 19 Online
OpenStudy (anonymous):

What is the length of side RQ? 4 4/5 units 7 1/2 units 20 units 13 1/3 units

OpenStudy (anonymous):

OpenStudy (anonymous):

I would look at it as two different shapes. You have a square and a triangle next to each other. The dimensions of the square are 4 x 4 leaving 4 x 2 for the triangle (because 6 - 4 = 2). Use Pythagorean theorem to solve for RQ (a^2 + b^2 = c^2)

OpenStudy (anonymous):

so 6^2+4^2=c^2?

OpenStudy (anonymous):

Yes.

OpenStudy (anonymous):

B?

OpenStudy (amistre64):

are teh shapes spose to be similar? if so you can do a proportoin

OpenStudy (anonymous):

Yes they are similar. I was trying to do a proportion but couldn't figure it out.

OpenStudy (amistre64):

10 is to 8 as 6 is to RQ \[\frac{10}{8}=\frac{6}{RQ}\]

OpenStudy (anonymous):

alright

OpenStudy (amistre64):

solving for RQ gives us: 6(.8)

OpenStudy (anonymous):

not understanding that part. are you saying cross multiply or the answer is 6.8?

OpenStudy (amistre64):

|dw:1365431488411:dw| the only the pythag would get you on this is the value of K, which is not RQ

OpenStudy (amistre64):

im saying cross multiply

OpenStudy (anonymous):

so 48=10RQ?

OpenStudy (amistre64):

so far as good, no just divide off that 10

OpenStudy (anonymous):

yes so 4.8 A

OpenStudy (amistre64):

yes

OpenStudy (anonymous):

Thanks!

OpenStudy (amistre64):

good job ;)

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