X = girls
Y = boys
X + y = 428
Answer:
48
Step-by-step explanation:
x/8+3=9
x/8=9-3
x/8=6
x=6*8
x=48
Step-by-step explanation:
y=X -3/X
y=X/1 -3/x
y= 2x -3/x
y*X= 2x-3
y*X/2 = x-3
13 feet
Pythagorus is used
25 + 144 = 169
169 is 13 to the second power etc
