So, look:
36*4 = 144
There are 145 quarters in all.
And in nickels, there are:
144 * 5 = 720 + 5 = 725
There are 725 nickels in all.
Dimes: 144 * 10 = 1440 + 10 = 1450 (or you could do 145 * 10 and still get 1450. Like I did in the nickels and everything. :) )
= 1450 dimes
I hope this helps!
The mean is 250.875.
Using this information, I can put the following into a calculator:
√(((250.875-195)²+(250.875-358)²+(250.875-201)²+(250.875-276)²+
(250.875-161)²+(250.875-301)²+(250.875-387)²+(250.875-128)²)÷8)
Which equals:
87.9878
This is the standard deviation of the MP3 players.
Answer:
300
Step-by-step explanation:
6 x 5= 30, so just add one zero to 6 and add a zero to 30
A is the correct answer because he did not ask the whole class.
The graph shows that it’s on points level 2 and 5, add 2 and five it gives you seven and that’s number does not exist