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Mathematics 28 Online
OpenStudy (anonymous):

The figure shows three right triangles. Triangles ABD, CAD, and CBA are similar. Theorem: If two triangles are similar, the corresponding sides are in proportion. Using the given theorem, which two statements help to prove that if segment BC is x, then x2 = 74? Segment BC × segment DC = 49 Segment BC × segment BD = 35 Segment BC × segment DC = 49 Segment BC × segment BD = 25 Segment BC × segment DC = 25 Segment BC × segment BD = 35 Segment BC × segment DC = 25 Segment BC × segment BD = 49

OpenStudy (anonymous):

OpenStudy (anonymous):

Little bit of confusion. What's x2. It's no where in fig..:P

OpenStudy (anonymous):

i think it just gives that to show what x is

OpenStudy (anonymous):

Hint: You can find BC by Pythagoras theorem. Then use property of similar triangles to find the options.

OpenStudy (anonymous):

@champs i know that but i dont understand anything else. BC = x = 8.602325267

OpenStudy (anonymous):

The x2 thing is really confusing me..:O

OpenStudy (anonymous):

i think that was just to help you find BC

OpenStudy (anonymous):

How much is 8.6^2?

OpenStudy (anonymous):

73.96 but if you use the whole number it equals 74

OpenStudy (anonymous):

@Calcmathlete @zepp @satellite73

OpenStudy (zepp):

No idea D:

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