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dexar [7]
4 years ago
7

The average (arithmetic mean) of 10, 14, and 3x is 18. What is the value of x?

Mathematics
2 answers:
ycow [4]4 years ago
5 0
Mean=(10+14+3x)/(3)
Which mean value ady stated, 18
18=(10+14+3x)/(3)
54= (10+14+3x)
54-10-14=3x
3x=30
x=10

Hope this can help.
natulia [17]4 years ago
3 0
B

It is a great match question you go need to do 10x14+3x=18
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