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4. The mean of seven scores is 21. Find the sum of the scores.
A. 3
B. 7
C. 28 D. 147​


Sagot :

Answer:

d

Step-by-step explanation:

mean = 21

number of score added =7

mean is the same as average : mean is equal to sum of all scores over the number of scores

mean= ( sum of all scores)÷ ( number of scores added )

sum of all scores= ( mean) × ( number of scores added )

sum of all score =(21)×(7)

sume of all scores = 147

sana makatulong