10
A) 24 ribbons
B)1/28yards
11.u have 1/2 how?
We have the triangle 30° - 60° - 90°.
The lenght of the sides are in proportion: 

I think it’s the number 3 I’m not sure I’m learning this stuff rn I’m getting the hang of it just it’s hard and not hard at the same time
Answer:
? can you explain this a little better
Step-by-step explanation:
Answer:
Step-by-step explanation:
1) isosceles= two sides are congruent
2) 9x-13=4x+2
-4x
5x-13=2
+13
5x=15/5
X=3
Answer is c