Answer:
24
Step-by-step explanation:
3x5=15
15+9=24
Answer:
100 miles
Step-by-step explanation:
Relative Speed: 60+40=100 mph
you can think that one train is stationary,another one is 100 mph
so one hour before the train pass each other,the distance is 100 miles

The maximum height is the y-coordinate of the vertex (x,y) of the parabola.
First find the x-coordinate using the formula:

Now plug the value into the equation and find the y-coordinate:

The maximum height is 36 feet.
Answer:
240
Step-by-step explanation:
1 percent=10 dollars
10 percent=100 dollars
=120 dollars in one year
times 2 [2x]=
240
Check:
10 times 10=100 dollars
100+20=120
x2=
120+120 <em>or</em> 120 times 2=
240
Answer:
x = 1
y = -1
Step-by-step explanation:
A*B= (4y-8 3x-3)
1-) (4×2)+(3×y)= 3y+8
2-) (4×x)+(3×(-1))= 4x-3
AB=C
(3y+8 4x-3)=(5 1)
So
3y+8=5 ; y= -3/3 = -1
4x-3=1 ; x=4/4 =1