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06-12-2020
Mathematics

contestada

Jim scores the following marks in 8 tests.
7
8
y 6 9 10 5
His mean mark is 7,5
Calculate the value of y.

Respuesta :

owolabiajibola1 owolabiajibola1

06-12-2020

Answer:

7.5

Step-by-step explanation:

7+8+y+6+9+10+5=7.5×2

45+y=52.5

y=52.5–45

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