Multiply all of those and minus and do what is said and of not serch for links ok
Answer:
16.8
Step-by-step explanation:
I hope this helps you
boys+4=girls
boys+girls=26
boys+boys+4=26
2.boys=22
boys=11
girls=15
Answer:

Step-by-step explanation:
As the mean is 20.2 and the standard deviation is 2.4
The range within the first standard deviation is
(17.8,22.6)
This means that we can safely use the range of (18,22) as we cannot confirm whether the other values fall within the range.
Within this range there are

Then c = 22 just keep adding 7
8+7=15 15+7=22