Answer:
4
Step-by-step explanation:
Answer:
8.j 9.b 10.f 11.a
Step-by-step explanation:
you welcome
Answer:

Step-by-step explanation:
Hello,
<u>The mean of five numbers is 8</u> so we can write

<u>When another number is added the mean is 7</u>, let s note x the another number we can write

From the first equation we can say

So the second equation becomes

The solution is then 2
Hope this helps