386 divided by 20 is 19.3 so Greg averaged 19.3 miles per gallon.
Answer:
c
Step-by-step explanation:
this needs evaluation of Bella's income on every chore.
say when c = 1, d = 3.5*1+11= 14.5
c=2 d = 3.5*2+11= 18..evaluate for c=3,4,5.
with that it can be found that bella earns more than sweet t. so choice c
Answer: There will be 20 motorcycles and 26 cars
let me know if you want me to explain:)
Step-by-step explanation:
If you want to check multiply 26 by the amount of wheels on each car (4) to get 104 total car wheels, then multiply the 20 motorcycles by the wheels of each motorcycle (2) to get 40. Lastly add the 104 and 40 together to get 144 the total amount of wheels in the parking lot.
Hope this helps :)
Answer:
Systematic sampling
Step-by-step explanation:
An EPA contractor needing to test the concentration of a substance in ten samples out seventy samples provided form a single source at regular time intervals.
For the contractor to effectively carry out the testing he has to employ a Non-probability system of sampling which is called Systematic sampling, because in systematic sampling we can assume the population size (x ) which in this case is 70 and the sample size( n ) to be 10
He will have to select ; ( x / n )^th of the sampling frame for best results
