4 years ago

What is the length of PR

Mathematics

2 answers:

daser333 [38]4 years ago

8 0

Answer:

here is how i did it.

BartSMP [9]4 years ago

3 0

Answer:

B 7

Step-by-step explanation:

Since the triangles are similar by AAA

We can use ratios to find the length x (which is PR)

5 15

-------- = ------------

x 21

Using cross products

5 * 21 = 15 *x

Divide each side by 15

5/15 * 21 = 15x/15

1/3 * 21 =x

7 =x

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