Answer:
idk
Step-by-step explanation:
Answer:
-4
Step-by-step explanation:
2x + 3y = -14
x - y = 3
Multiply the second equation by -2 to eliminate x
2x + 3y = -14
-2x +2 y = -6
-----------------------
5y = -20
Divide by 5
5y/5 = -20/5
y = -4
Answer:837
Step-by-step explanation:
Answer:
400 ping pong balls
Step-by-step explanation:
Let the total number of ping pong balls =x
Out of x ping pong balls, 80 are marked with a blue dot
Out of 80 ping pong balls, 16 are marked with a blue dot.
Expressing it as a ratio:
x:80=80:16
There are an estimate of 400 ping pong balls in the container.