Answer:
B
Step-by-step explanation:
Initial mean = 156, Changed mean = 163.92
So, mean increases. Only condition that satisfies this is B.
Answer:
3200 meters
Step-by-step explanation:
because it is
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
Answer:
y = 22
Step-by-step explanation:
we want to move the -8 to the other side, so 14+8 = 22
y = 22
check: -8 + 22 = 14