Equations for X and Y Needed: I get how to solve X and Y equations such as- "Solve for X," or ,"Solve for Y." I just need to make sure I don't forget HOW to do it. SO if you can, please write the equation in the first comment, and the answer to it in the 2nd one. Thanks for reading this :)

Which expression shows the sum of the polynomials with like terms grouped together

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

Acourt reporter is transcribing an accident report from germany. the report states that the driver was traveling 80 kilometers per hour. how many miles per hour was the driver traveling?