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suter [353]
3 years ago
14

A student has a 90, 84, and an 86 on their first 3 tests. What possible scores would the student need

Mathematics
1 answer:
Ugo [173]3 years ago
4 0
The student would have to score 100% on their next test to brung their average up to 90. Here is why;
90+84+86=260
(260+?)/4=90
(260+100)/4=90
360/4=90
This is done to get the mean (or average) of a group of numbers by adding all the numbers and dividing by the amount of numbers you added together. Here it is divided by 4 because of the three tests he has taken and the test he will take.
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