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shusha [124]
3 years ago
8

Find the value of x such that the data set 31.7, 42.8, 26.4, and x has a mean of 35.

Mathematics
1 answer:
Travka [436]3 years ago
5 0

Answer:

x = 39.1

Step-by-step explanation:

To find the mean, add up all the data points and then divide by the number of data points

(31.7+ 42.8+ 26.4+ x)/4 = 35

Multiply each side by 4

(31.7+ 42.8+ 26.4+ x)/4*4 = 35*4

(31.7+ 42.8+ 26.4+ x) = 140

Combine like terms

100.9+x = 140

Subtract 100.9 from each side

x = 140-100.9

x = 39.1

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