h1u9rtneyadaniA h1u9rtneyadaniA

09-04-2017
Mathematics

contestada

The mean of a set of four numbers is 3.5. if a fifth number, x, is added to the data set the mean becomes 4. what is the value of x.

Respuesta :

wolf1728 wolf1728

14-04-2017

The total = 3.5 * 4 = 14
(14 + x) / 5 = 4
14 + x = 20
x = 6

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