Ask your own question, for FREE!
Mathematics 21 Online
OpenStudy (anonymous):

In the figure, ΔABC ~ ΔDEF. Solve for x.

OpenStudy (anonymous):

OpenStudy (anonymous):

Make a proportion based on the fact that they are similar. Turn the bottom triangle until the triangles match and compare the sides. The proportion should be 16/8=x/3

OpenStudy (anonymous):

do cross multiplication

OpenStudy (anonymous):

So the answer should be b=4?

OpenStudy (anonymous):

|dw:1343161960665:dw| Try again.

OpenStudy (anonymous):

16x 3 /8

OpenStudy (anonymous):

Nana. Did you check your work?

OpenStudy (anonymous):

So it's 6?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Thank you so much! Can you help me with another one?

OpenStudy (anonymous):

Good job. Give yourself a pat. Do you understand how I made the proportion, though?

OpenStudy (anonymous):

Yes I did!

OpenStudy (anonymous):

OpenStudy (anonymous):

Try to make a proportion yourself after matching up the triangles. I'll tell you whether you got it right or not ;)

OpenStudy (anonymous):

x-3/4 = 12/3

OpenStudy (anonymous):

Huneya. Please try to help her without guessing for her :/ At any rate, huneya's attempt was wrong.

OpenStudy (anonymous):

no its not @Grazes

OpenStudy (anonymous):

I got 16... I think that's wrong.

OpenStudy (anonymous):

so it's 19? I was close.

OpenStudy (anonymous):

Huneya's proportion was correct.. to a degree. It was only right because they were special similar triangles

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!