Answer:
125 hrs
Step-by-step explanation:
1500-250=10h
simplify
1250=10h
divide both sides by 10
h=125
125 hrs
Answer:
168
Step-by-step explanation:
The first equation given is 
Where a is number of adult tickets and b is number of student tickets
It is also given that 82 students attended, so we can put "82" in place of "b" and then solve the equation for a:

Hence, 168 adults attended
Answer:
10 like radio 21 like tv and 8 prefer none
Step-by-step explanation:
The answer is false. A simple random sample is a subset of a factual populace in which every individual from the subset has an equivalent likelihood of being picked. A case of a straightforward arbitrary specimen would be the names of 25 workers being picked out of a cap from an organization of 250 representatives.