Answer:
21 years old
Step-by-step explanation:
Anna = 5
You = 6 + (5)3
Equation =
(5)3 + 6
15 + 6 = 21
You are 21
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-Chetan K

Why?
We have the isosceles right triangle. The length of legs are 6. Use the Pythagorean theorem:

In general, the formula for calculating the hypotenuse in an isosceles right triangle is 
a - a leg, h - a hypotenuse
Answer:
40 girls
Step By Step Explanation:
assume boys = y girls = x
y = 1/2x + 10
y = 30
30 = 1/2x + 10
1/2x = 20
x = 20 *2 = 40
girls is 40 boys is 30
1. you would take 36×1/4 and then it would equal 9
2. you would take 24×1/4 and then it would equal 6