henry begins to drain a water tank by opening a valve. Then he opens another valve. Then he closes the first valve. He leaves the 2nd valve open until the tank is empty. Discrete or Continuous?

Continuous

Step-by-step explanation:

There is never a period of time when the water's flowing halts because the opening and closing of the first and second pipe are overlapping. Hope this helps (:

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

jwjwkwkwkkkdjebd b jdjejdndj he jenej