Answer:
1) 1 hour
Step-by-step explanation:
Marginal cost is the total cost of making the product.
Here, the Total number of hour Matias need to move from grade B to grade A is:
Time spent to get grade A - Time spend to get grade B
= 2 hours - 1 hours = 1 hours
Thus, Matias ’s marginal cost in terms of TV viewing to moving from a B to an A on the exam is 1 hour.
Answer:
x = 147/5 and y = 78
Step-by-step explanation:
First solve by substitution and put 78 into y in -5x + 2y = 9 so you get 147/5
then plug 147/5 into x and find y
There is no solution to this equation
X≠0
The answer would be 3=6 which is an invalid answer therefor an equation with no solution.
-5x+10x+3=5x+6
Combine like terms first
5x+3=5x+6
After this whether you make it 10x=9 that’s still an invalid answer but if you subtracted 5x on both sides it’d be 3=6
Therefore x≠0
Answer:
D. All of the above
Step-by-step explanation:
Samples may be classified as:
Random: Basically, put all the options into a hat and drawn some of them.
Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.
Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.
Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.
In this problem:
Two random samples are selected and combined. The combination is a random sample. So A. is correct.
They are not balanced. More male professors than female are chosen. So B. is correct.
The teachers are divided into groups(male and female). And some members of each group are selected. So C. is correct.
So the correct answer is:
D. All of the above
