Use the substitution method to solve the system of equations: y - 5x = 7; y = 3x - 9

1. preform the indicated operation. then estimate to see whether the proposed result is reasonable. 811.1 - 8.039 803.071 803.061 803.161 831.061 2. the ordered pair (1, 2) lies in which quadrant? quadrant ii quadrant iv quadrant iii quadrant i 3. sean tries to drink 3 liters of water every day how my millimeters of water does he drink in a day? 0.3 ml 0.003 ml 3,000 ml 30 ml 4. find the least common multiple. (lcm). 10, 36 5 180 20 360

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

If a || b and e || f , what if the value of y ?