Answer:
C.
Step-by-step explanation:
Adding 2 fractions results in a fraction.
Cramer's Rule is a method that uses determinants to solve systems of equations that have the same number of equations as variables
What exactly was the purpose of posting this?
Answer:
Yes
Step-by-step explanation:
Becuase a statistical question is "one that can be answered by collecting data and where there will be variability in that data" you can collect data to find out
