In 1990, seven in ten adults in the U. S. own an answering machine. In a random sample of 10 adults, what is the probability that the number owning answering machines is a) exactly six

b) atleast seven

c) more than five

d) at most four

these are individual questions, not answers.

first correct answer gets brainliest.

What is the smallest integer n such that n\sqrt{2} is greater than 20

Which expression is not a polynomial?

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z