Answer:
3.5
Step-by-step explanation:
Answer:
At the end of the day 797 lockers were closed.
Step-by-step explanation:
So first of all you need to find out how many even numbers there are from 1-900 (which is 450) so you know that 450 are open. In the 3 multiplication tables every second number is even so you know that half of the 450 lockers that was opened was closed again: this meant that 225 lockers remained open.
You also know that every number in the 4 multiplication tables is the second number in the 2 multiplication tables so half of them are closed but you also know that the 900th locker was opened so now you have 113.
So to conclude you do 900-113 which gives you 797 (this is because 113 is the amount of lockers that is open)
Your answer is b so there you go have a great day!!!!
Answer:
The standard deviation will be: 2.1
Step-by-step explanation:
We know that standard deviation is basically the square root of variance.
Using the formula to calculate the standard deviation
As
so the standard deviation can be calculated as:
standard deviation 
Therefore, the standard deviation will be: 2.1
Answer:
7.3
Step-by-step explanation:
7+9+7+9+15+0+1+13+11+1=73
There are 10 numbers.
73/10=7.3
