ten red cards and ten black cards are placed in a bag . you chose one card then another without replacing the first card. what is the probility that the first card will be red and the second card will be black

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.

How can constraints be used to model a real-world situation?

Which angle is the smallest? also give me an explanation so i can complete it to other questions as well, : )