7) 616 yd
8) 1,300 ft
9) 748 in
10) 1,000 ft
Answer:
The sample is a Simple Random sample.
explanation:
A simple random sample is the process where there is equal chance of selecting each member of a population to form a sample. in the example stated in the question there are equal chances of selecting every ticket among the five hundred ticket of the participant so as to form another set of ten tickets that win a prize.
Let the unknown number be x.
6x + 8 = 9x
-3x = -8
x = 8/3
The number is 8/3 or 2 2/3
I think the answer is B or D