Answer:
16 quarts
Step-by-step explanation:
Let's say x is the volume of water.
Initially, the amount of antifreeze is the concentration times the volume: 0.90 (8).
After the water is added, the amount of antifreeze is the new concentration times the new volume: 0.30 (8 + x).
Since the amount of antifreeze doesn't change, we can set these equal and solve for x.
0.90 (8) = 0.30 (8 + x)
7.2 = 2.4 + 0.30 x
4.8 = 0.30 x
x = 16
16 quarts of water should be added.
36, because the square root of 4 is 2 and the square root of 81 is 9. You multiply those and then double it to get 36.
Answer:
A Solution is a value we can put in place of a variable (such as x) that makes the equation true.
Step-by-step explanation:
If they sell the same amount next year and want to reach $1,500, they must higher the price. to do that, they can divide the $1500 by the number of agendas. Do the math yourself, its not very hard.
4 TIMES THE HEIGHT OF A KIWI = 4X20 INCHES TALLER = 4X+20 4X+20 = 108 -20 = - 20 (Subtract 20 from both sides) 4X = 88 4X/4 =88/4 <span>X= 22 inches</span>
