I believe the theoretical probability is 5/20. Or 25%.

**Answer:**

30

**Step-by-step explanation:**

Everything has to add up to 90.

Add EVERYTHING together.

3x + 33

3x + 33 = 90

90 - 33 = 57

57 / 3 = 19

19 = x

19 x 2 = 38

38 - 8 = 30

**Answer:**

55°

**Step-by-step explanation:**

We know that exterior angle of a triangle is equal to the sum of two opposite interior angles

so

x = 21° + 34°

= 55°

Hope it will help :)❤

**Answer:**

C≈12.57

**Step-by-step explanation:**

2πr