## Complete the list of five different integers so that they have a mean of −10. Explain how you found your answer. −10, 0, , −5, −15

Question

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## Answers ( No )

If five numbers have a mean of -10 it means they’ll have a sum of 5(-10) = -50.

That’s because the mean is the sum divided by the count, so the sum is the mean times the count.

Here our sum is -10 + 0 + -5 + -15 = -30, so our fifth number must be -50 – -30 = -20 to make the sum -50 and the mean -10.

Answer:

-20