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fiasKO [112]
4 years ago
11

The average (arithmetic mean) of k scores

Mathematics
1 answer:
denis23 [38]4 years ago
6 0

Answer:

(E) (20k - 150)/(k - 10)

Step-by-step explanation:

Sum of all scores = average × number of scores = 20 × k = 20k

                   Sum of 10 scores = 15 × 10 =150

      Sum of remaining scores = 20k - 150

Number of remaining scores = k -10

Average of remaining scores = sum of remaining/no. remaining

= (20 k -150)/(k-10)

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Step-by-step explanation:

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Answer:

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