Let 2m - 1 be a prime number. Prove that m is also a prime number

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42

Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll

Heather, sarah, nicky, and jill each have nine markers. how many markers do they have in all?