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3 years ago

14

A student writes down four random numbers: -20, 55, 10, -15. A second students adds one number to the set, making the average 11

. What number did the second student add to the set?

1 answer:

Lostsunrise [7]3 years ago

3 0

Answer:

-19

Step-by-step explanation:

-20 + 55 + 10 + -15 = 30

30 - 11 = 19

-19

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