250/5 = 50.....so each person is stacking 50 chairs...
50/20 = 2.5 minutes....so it takes each person 2.5 minutes to stack 50 chairs.
so ur answer is 2.5 minutes
Answer:
x = -3
Step-by-step explanation:
y = -x + 2
7x + 4y = -1
Subsitution method: (Substitute y)
7x + 4(-x+2) = -1
Expand.
7x + (-4x + 8) = -1
One plus and one minus make one minus. Two plus makes a plus.
7x -4x + 8 = -1
Simplify.
3x + 8 = -1
Isolate 3x.
3x = -1-8
= -9
Find x.
x = -9 ÷ 3
= -3
Start by combining like terms:
Now we have:
Divide both sides by 2 to isolate s
Final answer:
s=12
Answer:
If you subtract -2x+y=0 and -7x+3y=2 you will get 5x-2y=-2
Step-by-step explanation:
Subtract -2x and -7x which is 5x
Subtract y and 3y which is -2y
Subtract 0 and 2 which is -2
Result: 5x-2y=-2
Hope this helps!
