Which statements about opposites are true?
select each correct answer.
a number and its opposite are located the same distance from zero on a number
the product of a number and its opposite is always 1.
the opposite of zero is zero.
the opposite of a negative number is always a positive number.

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Which question is not a good survey question? a.don't you agree that the financial crisis is essentially over? 63on average, how many hours do you sleep per day? c. what is your opinion of educational funding this year? d.are you happy with the availability of electronic products in your state?