zdottinblades14 zdottinblades14

03-12-2020
Mathematics

contestada

If the mean of the four numbers 4, 8, 2x and
12 is 10, then x is

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JOJODIO JOJODIO

03-12-2020

Answer:

8

4+8+2x+12=10*4

24+2x=40

2x=16

x=8

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