this is my answer but you need to check with your teacher
Answer:
Step-by-step explanation:
5y - 2y = 10
3y = 10
y = 10/3 = 3⅓
Answer:
about 4312
Step-by-step explanation:
You want the total cost for n CDs to be 3.50n.
The manufacturer will charge you 9700+1.25n, so you want these to be equal:
3.50n = 9700 +1.25n
2.25n = 9700 . . . . . . . . subtract 1.25n
n = 9700/2.25 ≈ 4311.111...
Producing 4312 CDs will make the cost per CD slightly less than $3.50.
____
Producing 4311 CDs will make the cost per CD be about $3.500058. Producing 4312 CDs will bring it down to $3.499536.
Using the given discrete probability distribution, it is found that the probability that a randomly selected student has a grade higher than a C is given by:
P(X > 2).
<h3>What is the discrete probability distribution for the grade?</h3>
From the table, it is given by:
- P(X = F) = P(X = 0) = 0.04.
- P(X = D) = P(X = 1) = 0.05.
- P(X = C) = P(X = 2) = 0.17.
- P(X = B) = P(X = 3) = 0.31.
- P(X = A) = P(X = 4) = 0.43.
Grades A and B are greater than C, hence the probability of getting a grade higher than C is given by:
P(X > C) = P(X = A) + P(X = B) = P(X = 3) + P(X = 4) = P(X > 2).
More can be learned about discrete probability distributions at brainly.com/question/24855677
