What is −5/6÷9/10?

−27/25

−4/3

−25/27

−3/4

Which value would be a solution for x in the inequality 47-4x< 7

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25

Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?