Answer:
Step-by-step explanation:
28+9=37
37 rounding off to the nearest tenth=40°
Answer: 7x + 4 y = 2
9x - 4y= 30
-------------------
16x / = 32
x= 32:16
x=2
Step-by-step explanation: 7x+4y=2
7*2 + 4y=2
14 +4y=2
4y= 2-14
4y= -12
y= -12 : 4
y= - 3
You need to find out how much it costs to wash one car, so:
3×=13.50
Divide both sides by 3.
x=4.5 per car.
Now multiply 4.5 by 25 which should give you $112.50
you would move the decimal until you only have 1 number to the left of it and the rest on the right. we moved it three spots left in this case so your answer would be as follows.
1.8 x 10^3 is the answer
