Answer:
A the first one
Step-by-step explanation:
A. increase the temperature.
For example, sugar dissolves easily in hot water, but not in cold water(?)
It means the same:
2x - 6 + 9 = 3x + 3 + x
2x +3 = 4x + 3
2x - 4x = 3 - 3
-2x = 0
x = 0/(-2) = 0
Answer:
x = 0
(7.488 x 10^-8) ÷ (3.12 x 10^2) = (7.488/3.12) x 10^(-8 - 2) = 2.4 x 10^-10
Answer:
$0.80
Step-by-step explanation:
percent times the original number equals the part
(%)(start or total cost)= (part of the total cost). you need to know the total cost, so you would fill in the part and the percent. 0.9x=0.72. you use x because you don't know what the total cost is. then you divide both sides by 0.9 to get x by itself and you get that x = 0.8, meaning that the present costs $0.80.