Answer:
8 Liters
Step-by-step explanation:
Percentage of Alcohol in water= 2L X 0 =0
Percentage of Alcohol to be added = xL X 0.9 =0.9x
- New Volume =(x+2) Liters
- Desired Concentration = 0.72%
Therefore:
0+0.9x=0.72(x+2)
0.9x=0.72x+1.44
Collect like terms
0.9x-0.72x=1.44
0.18x=1.44
Divide both sides by 1.44
x=8 Liters
Therefore, Shanice must add 8 Liters of 90% alcohol solution to create the desired mixture
Multi-step equations are equations that require more than one step to solve.
For example:
2x+6 = 10 You subtract 6 from both sides
2x= 4 Divide both sides by 2
x=2 It took 2 steps to solve for x, so it is a muti-step equation.
One step equation:
2x =6 divide 2 by both sides
x=3 It only took one step, so it is an one-step equation.
Hope this can help you! Please put branliest answer if you like it!
Answer:
34%
Step-by-step explanation:
To find the concentration of the new solution, take the percent time the amount of each of the solutions
40 ml* 25% + 60 ml * 40% = 100 ml* percent
40 * .25 + 60 *.40 = 100 * P
10 + 24 = 100 P
34 = 100 P
Divide each side by 100
34/100 = P
.34 = P
Changing to
34%
I think it would be Garo, Annette, and Heather????
Lets say that
p: x is a positive numbre
q: x > 7
r : x > 10
Then,
(C) if 'p', then 'q' (if a number is positive, then it is >7)
p》q
(D) if 'r', then 'p' (if a number is >10 then it is positive)
r》p