Question

0.3) Leon scores the following marks in 5 tests. 8 4 8 y 9 His mean mark is 7.2. Calculate the value of y.​

Answer 1

Answer:

y is 7. Please mark me as brainliest.

Step-by-step explanation:

Mean = Sum of all values/Number of values

$7.2 = \frac{8+4+8+y+9}{5}$

$7.2 = \frac{29 + y}{5}$

29 + y = 7.2 x 5

29 + y = 36

y = 36 - 29

y = 7

Answer 2

Step-by-step explanation:

Mean = Sum of all values/Number of values

7.2 = \frac{8+4+8+y+9}{5}7.2=

5

8+4+8+y+9

7.2 = \frac{29 + y}{5}7.2=

5

29+y

29 + y = 7.2 x 5

29 + y = 36

y = 36 - 29

y = 7

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