Answer:
1600 boys, 2400 girls
Step-by-step explanation:
4000*4/10=400*4=1600
100-40=60
4000*6/10=400*6=2400
1.63
4.89 divided by 3 = 1.63
y - 1.8 = -4.2
y = -2.4 is the solution
-7/3
You take two ( X,Y) points and subtract them to find the slope of the line.
23-16/-6-(-3) = -7/3