C. Euclid is known as the father of Geometry
3/8 = 9/24
1/6 = 4/24
9+4=13
13/24
24-13 =
11/24
She spent 11/24 of her allowance on other items
First, note that x+21 and 3x+9 are "complementary angles;" they add up to 90 degrees. Thus, 4x + 30 = 90 degrees, so that 4x = 60 degrees, and x = 15 degrees.
Answer:-25c+15b+5 ..add it up then boom you'll get your answer
Step-by-step explanation: