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iragen [17]
3 years ago
11

Rod's scores on 4 history tests are 88,96,98,and 90. What score does he need on the fifth test to have a mean score of 94 on all

5 tests?
-----------------------------
Please help answer
Mathematics
2 answers:
Troyanec [42]3 years ago
8 0
The answer is 98 because you add everything up and you divide. 
aleksandrvk [35]3 years ago
7 0
(88+96+98+90+x)/5=94
Add all the numbers
(372+x)/5=94
Multiply both sides by 5
372+x=470
Subtract 372 from both sides
x=98

Double check:
88+96+98+90+98=470/5=94

Hope that helps

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