Answer:
<em>We need to add 400 ml of pure water to obtain the solution at 55%</em>
Step-by-step explanation:
<u>Concentration</u>
The concentration of a solution measures the amount of solute that has been dissolved in a given amount of solution. The question states the alcohol is the solute and water is the solvent to produce the mix or solution.
The concentration can be calculated with the formula:
Originally, the mixture was 95% concentrated.
Substituting in the formula:
We know there were 550 ml of solution (solute+solvent), thus
Now we know there were 522.5 ml of alcohol.
We now need to add x ml of water to have a 55% concentrated solution. Recall that water is solvent, the solute keeps its original value, thus:
Operating:
Dividing by 0.55
Thus
We need to add 400 ml of pure water to obtain the solution at 55%
Answer:
The price of the jacket will be $38.35
Step-by-step explanation:
Answer:
5/3
Step-by-step explanation:
We can find the slope of a line given two point by using
m = (y2-y1)/(x2-x1)
= (10-5)/(4-1)
=5/3
Answer:
21
Step-by-step explanation:
The question states that she in 4 days, makes 14 pots per day on average, and
charges $24 a pot.To find the amount of money she makes in 4 days, find the product of 4, 14 and 24. and that is 1344.
Then equate it to the product of new price, 4 and x(which is the number of pots she must make to get the same amount of money.
1344=16×4×x
1344=64x
1344/64=64x/64
21=x
Answer:
OB) 4y-2
Distribute it first, then add/subtract similar terms