. If a + b = 10, what are two possible values for c that satisfy the equation below? (ax – 4)(bx + 5) = 21x2 + cx – 20
I need help answer pleas

Abaker makes 186 cookies. some are chocolate chip and some are oatmeal raisin, and both kinds are made with and without nuts, as shown in the table above. because they are more popular, the baker made 2/3 of the cookies chocolate chip. if a chocolate chip cookie is chosen at random, what is the probability that it will have nuts? a) 21/93 b) 21/62 c) 41/93 d) 21/41

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

What numbers are included in the set of integers? what numbers are not included?