Answer:
here is how i did it.
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
Answer:i can's see it very well sorry kid
12
Step-by-step explanation:i dont know
32 Ribbon's left
54+6x
6(9+x)
Distribute the 6 to each term inside the parentheses
6*9 + 6*x
