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The mean of 8 numbers is 21. What is the sum?
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The mean of 8 numbers is 21. What is the sum?
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Mathematics
4 years
2021-08-01T05:13:02+00:00
2021-08-01T05:13:02+00:00 2 Answers
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Answer:
168
Step-by-step explanation:
8 numbers.
Mean = add all up then divide by 8 so the opposite is 21*8 or 168
that is the sum.
Hope this helpzplz hit the crown 😀
Average of 8 numbers is 21.
If each number is multiplied by 8 then the average will also get eight times.
Therefore average is 21×8=168.
Explination:
Let eight numbers be x1 ,x2 ,x3, …….. x8.
To take average we add all numbers an divide by the total numbers we have
So avg is
(x1 + x2+x3+………..x8)÷8=21
Now all numbers are multiplied by eight
So eight we will be taking as common
Therefore average is
8 (x1+ x2+ x3………..x8)÷8
Now we know (x1+ x2+ x3………x8)÷8= 21
So it becomes
8×21
Which is equal to 168.
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