1. based only in clues a and b: the possible numbers are any number between 69 and 82.
2. When you use clue C, you’re down to only odd numbers: 71, 73, 75, 79 and 81. Then with club D you only have one number left out of those that when added the digits together it equals 12: 75.
3. Therefore G is 75
4. All for clues were important to figure out what number was G
Answer:
-1 / 3y²
Step-by-step explanation:
18miles/6mph = 3hrs
3 hours
Answer:
(1)
(2)
Step-by-step explanation:
Solving (1):
(a): Mean
This is calculated as:
So, we have:
Solving (b): The variance
This is calculated as:
Where:
and
So, we have:
So, we have:
Solving (c): The standard deviation.
This is calculated as:
Solving (2):
(a): Mean
This is calculated as:
So, we have:
Solving (b): The variance
This is calculated as:
Where:
and
So, we have:
So, we have:
Solving (c): The standard deviation.
This is calculated as: