Answer:
The solution set is given by {a, -b}.
Step-by-step explanation:
We have the equation,

Equating the factors to 0 gives,
and 
i.e. x = a and x = -b
So, the solutions of the equation
are x= a and x= -b.
Thus, the solution set is given by {a, -b}.
Answer:
C:It is a strong positive correlation,and it is not likely causal.
Step-by-step explanation:
Correlation refers to the relationship between the two variables i.e x and y. It has mainly two types of correlation. The first one is positive and the other one is negative. It lied between -1 to 1. The 1 represents the strong positive correlation while the -1 represents the strong negative correlation
Since the correlation coefficient is 0.74 which is nearest to 1 so it denotes the strong positive correlation and thus is not causal
Hence, the correct option is c.
Answer:
6.875
Step-by-step explanation:
Used a calculator to solve this one, it might be incorrect, i suggest doing some extra research on how to solve to see if you get this answer ;)