Answer: 15 seconds; the number of seconds it took the ball to hit the ground.
10+10=20, 15+5=20 Those are both addition sentences that have a sum of 20.
Answer:
y = 6
x = 0.2
Step-by-step explanation:
5x + y =7
20x + 2 = y
5x(4) + y(4) = 7(4)
20x + 4y = 28
(20x = 28 - 4y) = (20x = y - 2)
28 - 4y = y - 2
30 - 4y = y
30 = 5y
y = 6
5x + y =7
20x + 2 = y
y = 7 - 5x
7 - 5x = 20x + 2
5 - 5x = 20x
5 = 25x
x = 0.2
3+8x-2y-x+1+4y
Combine all like terms and
7x+4+2y is your answer
