Which ordered pair is a solution to the system of equations x+y=12 and x-y=6
(3,9)
no solution
(9,3)
infinite numbers of solutions

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?