<h3>5 gallons of 50 % alcohol solution is used</h3>
<em><u>Solution:</u></em>
Let "x" is the gallons of 50 % alcohol solution
Then, 10 gallons is 35 % solution
The, 10 + x is the gallons of 40 % solution
Then, according to question,
"x" gallons of 50 % solution is mixed with 10 gallons of 35 % solution to get 10 + x gallons of 40 % solution
Therefore,
Thus 5 gallons of 50 % alcohol solution is used
Correlation coefficient is the numerical representation of how one variable predicts the change of the other. In this case, if the AP tests scores and the SAT scores have 0.93 correlation coefficient, this means that the two results move in the same direction. When AP test results go up, then we can say that SAT scores will go up too, same also if one goes down, so does the other.
0.6 I think that’s what you’re asking
Answer:
X = Amount of zippers she can buy
Y = Total cost
K = each zipper cost, $2.50
Solution: Hans can buy 15 zippers
Step-by-step explanation:
38 = 2.50x
x = 15.2 = 15 zippers
The total cost is 15.75
explanation: 5 percent of 15 is .75 plus the initial cost of 15 equals 15.75
