Helena asked five drama club members in her homeroom how many tickets they had sold. the mean number of tickets sold was 16. then she took ten random samples from the entire drama club of 75 students. the mean number of tickets sold was 22.5. compare the means. is one sample a better representation?

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

Which table shows a proportional relationship between miles traveled and gas used?

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry