Answer:
(C) 100
Step-by-step explanation:
The average of a data set is just all the numbers added up divided by the amount of numbers.
If we already have 4 pieces of data and we're looking for one more, we have 5 data pieces.
This means that the sum of all of the numbers in the data set will be 
if the mean is 91.
We can find the missing value by adding up what we know and subtracting from 455.
So Abby needs a 100% on her fifth history quiz to have an average of 91 on all her quizzes.
Hope this helped!
Answer:where the equations
Step-by-step explanation:
I have worked out the answer to the question, I hope it helps you. Please do not forget to check if this answer if reliable, I am not always correct
Answer: E
Step-by-step explanation: I’d say this because if they are intersecting that means that it would most likely make a perpendicular line
All you got to do is to find a number that will make the equation equal to 2.
What you could do is multiply each side by 12.
Then it will become 6x + 2x = 24
Combine like terms: 8x = 24
Now divide each side by 8
The answer is x = 3
