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kati45 [8]
3 years ago
8

The average of 8,6,9,12 and 4x is x. What is the value of x

Mathematics
2 answers:
7nadin3 [17]3 years ago
6 0

Answer:

35

Step-by-step explanation:

The average of 8,6,9,12 and 4x is x

To get average add all the numbers given in data set and divide by 5 because we have 5 numbers in data set

Average =\frac{8+6+9+12+4x}{5}

Given that average is x. So we replace x for average

x=\frac{8+6+9+12+4x}{5}

Multiply both sides by 5

5x= 8+6+9+12+4x

Subtract 4x from both sides

x= 8+6+9+12

x=35

So the value of x is 35

Juliette [100K]3 years ago
3 0
8 + 6 + 9 + 12 + 4x / 5  =  x                      Original Problem.
25 + 4x / 5 = x                                         Addition.
25 + 4x = 5x                                            Multiply each side by 5.
25 = x                                                      Subtract 4x from each side.
x = 25                                                      Switch equation around.

Answer: x = 25
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