Answer:
D. 59.50$
Step-by-step explanation:
Lets make an equation:
we know she is going to use 2 parts of yellow to 3 parts of red and she needs 10 quarts, therefore the equation would be:
2x+3x=10
x = 2
2 * 2 = 4( we need four quarts of yellow paint)
Price for yellow paint = 4 * 5.50 = 22
2 * 3 = 6(we need 6 quarts of red paint)
Price for red paint = 6 * 6.25 37.5
Add those prices: 37.5 + 22 = 59.50$
Answer:
0.6 = 60% probability that he or she studies on a weeknight.
Step-by-step explanation:
We solve this question treating these events as Venn probabilities.
I am going to say that:
Probability A: Probability of a student studying on weeknights.
Probability B: Probability of a student studying on weekends.
Forty-two percent of students said they study on weeknights and weekends
This means that 
47% said they studied on weekends
This means that 
65% said they study either on weeknights or weekends.
This is 
If you were to pick one student at random, what is the probability that he or she studies on a weeknight?
This is P(A), and the equation used is:

Considering the values we have:



0.6 = 60% probability that he or she studies on a weeknight.
Answer:
4
Step-by-step explanation: