ANSWER #3 AND #4 FOR ME

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Which ordered pair identifies a point in quadrant iv? a) (2, 5) b) (0, 1) c) (-1, -1) d) (12, -5) which quadrant is (-4,-6) in? a) i. b) ii. c) iii. d) iv.