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3 years ago

What is the length of PR?

Mathematics

2 answers:

OlgaM077 [116]3 years ago

5 0

5/x=15/21=

15x=105

x=7

11111nata11111 [884]3 years ago

4 0

Hi!

So we need to know how much smaller ΔPQR is than ΔDEF.

See line DE compared to PQ. PQ is 3 times smaller than DE. That means ΔPQR is 3 times smaller than ΔDEF.

So to find the length of PR, divide DF by 3.

21/3 = 7

x=7

Hope this helps! :)

-Peredhel

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2 years ago

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