45% is less than 80. The actual answer is 72. Hope that helps :)
Step-by-step explanation:
According to the pythagrean equation, it should be

8² = 6² + BC²
64 = 36 + BC²
BC² = 28
BC = ✓28 = 5.29
Answer:
B
Step-by-step explanation:
I just did it Red Riot out
Answer:
There are 9 boys in the choir
Step-by-step explanation:
To solve this, create two equivalent fractions with the information given
boys 3 x
------- = ------ = ------
girls 4 12
Then, cross-multiply
4x = 3(12)
4x = 36
x = 9