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taurus [48]
3 years ago
7

Please give me the answer

Mathematics
2 answers:
Charra [1.4K]3 years ago
7 0

Answer:

13.9

Step-by-step explanation:

To find the mean, add the two numbers and divide by two.

(13.9+13.9)/2=13.9

Airida [17]3 years ago
5 0

Answer:

13.9

Step-by-step explanation:

Mean is total (sum) divided by number of values

Mean = sum/num

mean1 = 13.9 = sum1/10

sum1 = 10 x 13.9 = 139

mean2 = 13.9 = sum2/11

sum2 = 11 x 13.9 = 152.9

Total mean = total sum/total num

total sum = 139 + 152.9 = 291.9

total num = 21

291.9/21 = 13.9

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