Answer:
n=16
Step-by-step explanation:
take 52-4=48
take 48/3 and get 16 so n=16
Answer:
Step-by-step explanation:
In similar triangles, the corresponding sides are in same proportion.

Cross multiply,
4x*12 = 15*(3x + 1)
48x = 15*3x + 15*1
48x = 45x + 15
48x -45x = 15
3x = 15
x = 15/3
x = 5
Just substitute the "x's" in the equation for 3.
F(3) = 3^2+4(3)-3
Answer:
14
Step-by-step explanation:
12:6=2
12+2=14
so her brother it's 14 years old