Determine which sides/angles need to be congruent in order to prove the triangles are congruent by the desired theorem PLEASE HELP FOR EACH ANSWER!

Find the value of x for which abcd must be a parallelogram -9-6x x-30

What is the result of adding the system of equations? 2x+y=4 3x-y=6

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.