Answer:
her brother is 9
Step-by-step explanation:
21-3=18 18 divided by 2 = 9
I think it's 4 Yeah 4 something like that
I'm pretty sure y=1.3=0.25x
Answer:
505 ft
Step-by-step explanation:
pythagorean therom = 
a= 15
b=9

144+361=505
505 ft
To distribute through parenthesis, u take the number outside of the parenthesis and multiply by everything inside the parenthesis.
6(x + 3) = (6 * x) + (6 * 3) = 6x + 18 <==