22 x 2 equals 22 and 22 x 20 equals 440 and you add 22 and 440 and get 462
No it means how many times can 18 go into 37 and if there is a remainder
Answer:
c. 10/3 hours
Step-by-step explanation:
Let's make a table.
Names:| Times completed in:| Field Space Covered:| Rate the field was . covered:
Aaron | 5 hours | 1 field | 1/5 field space/hour
Rachel | x hours | 1 field | 1/x field space/hour
Together| 2 hours | 1 field | 1/2 field space/hour
The 1 field represents that they covered the whole field.
The rate is found by dividing field space covered by amount of hours it took for them to cover it.
There rates individually should add up to the "together" rate.

Clear fractions by multiplying both sides by
on both sides:


Subtract 2x on both sides:

Divide both sides by 3:

x represented the amount of time it took Rachel alone to cover 1 field.
10/3 hours is the answer.
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.