Which point (x, y) is a solution to the system of linear equations? pls i need help it is for a test :)

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Ajar contains a mixture of 20 black marbles, 16 red marbles, and 4 white marbles, all the same size. find the probability of drawing a white or red marble on the first draw. 125 12 01 next question ask for turn it in

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab