Question

if the mean of 8,6 9,(p+15) and 7 is 10 , find the value of p​

Answer 1

Answer:

Step-by-step explanation:

{8+6+9+p+15+7}/2=10

{8+6+9+p+15+7}=20

p+45=20

p=-25

thank you!

Answer 2

Answer:

[8+6+9(p+15)+7]=10

14+9p+135+7=10

156+9p=10

156-10=-9p

146= -9p

9p=-146

p=--146/9

p=-16