Question

If a mean of 3,6,a,9 and 10 is 7 find the value of a​

Answer 1

Answer:

the value of a is 7

Answer 2

Answer:

Step-by-step explanation:

Mean = 7

3+ 6 + a + 9 +10 / 5 = 7

28 + a / 5 = 7

28 + a = 7* 5

28 + a = 35

a = 35 - 28

a = 7