Answer:
B. x² - 13x + 42
Step-by-step explanation:
Answer:
Step-by-step explanation:
one could be a square with side length of SQRT(1092)
The other could be a rectangle or a circle or an ellispe
Answer:
5
Step-by-step explanation:
75/15=5
Bam
So we know that an average is the sum of the scores divided by the number of scores that were added together. In this case we are going to be dealing with 4 tests. So let's say x is the score for our fourth test. We can create this equation:

So then we need to simplify the top:

Then multiply by 4 on both sides to get rid of the denominator:

Then solve for x:

So now we know that Sam needs to score a 67 on the fourth test to have an average score of 50.
Photo has the answer! hope it helped