400 should be the answer. Hope this helps!
Answer:
fx=8-3dx
Step-by-step explanation:
Answer:
x = -6
-18+4y=0 => 4y=18 =>y=18/4=9/2
Y=5
3x+20=0 => x=3x= -20=> x= -20/3
Step-by-step explanation:
Answer:
In mih's school there are 100 boys
While in Ella's school there are 80 boys
Step-by-step explanation:
X*1/5=20
X=100
X*1/4=20
X=80
Answer:
When t = 4
Step-by-step explanation:
The phone will hit the ground when h = 0.

However, as time cannot be negative, we know the answer is when t = 4.