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28 32 21 22 The mean is 24.4 what is the 5th number
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3 votes
28 32 21 22
The mean is 24.4 what is the 5th number

User Thomas Kammeyer
by
6.8k points

2 Answers

6 votes
set up an equation with x as the variable for the missing number

(28+32+21+22+x)/5 = 24.4

multiply both sides by 5

28+32+21+22+x = 5(24.4)

simplify (add and multiply)

103+x = 122

subtract 103 from both sides

x = 122-103

simplify

x = 19
User Henriqueor
by
6.2k points
3 votes
The awnser has to be 26??
User Darilyn
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6.3k points
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