Question

The average of Jim's two test scores must be at least 90 to make an A in the class. Jim got a 95 on his first test. What grades can Jim get on his second test to make an A in the class?



Jim's score must be at least

Answer 1

To take the average you add the two scores and divide by how many scores you added.

The first test is 95
The second test is x because it is unknown
We are averaging two tests.
We need a 90 as an average.

So

\[\frac{ 95 + x }{ 2 } = 90\]

Solve for x. That will be the score Jim needs

Answer 2

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Answer 3

okay so average is total sum over number of points of information

so the average sum/number=90

sum = (95+B)/2=90

95+B=180
180-95+B
B=85

Answer 4

at least 85

Answer 5

because if you get a bigger test number for the second test, you get a higher average

Answer 6

medal me please

Answer 7

https://www.youtube.com/watch?v=95h7qAkz5QY

Use x to represent the 2nd test, than solve by replacing numbers for x which would make the given equation true.