Solve the following systems of equations by elimination. Verify the solution: A. r+2s+1=0 and r+5s+25=0
B. 4m-3n=27 and 8m-6n=18
C. 0.6x=1.2+0.3y and 2.2x-1.8y-1.6=0

Fill in the blank 1. a rhombus is a rectangle a) always b) sometimes c) never 2. a square is a quadrilateral a) always b) sometimes c) never 3. a trapezoid is a kite a) always b) sometimes c) never 4. a quadrilateral is a kite a) always b) sometimes c) never 5. a square is a rhombus a) always b) sometimes c) never 6. a parallelogram is a rectangle a) always b) sometimes c) never