Applications And Problem Solving

So, let’s convert to decimals and see what the solutions actually are.

\[x = \frac = 7.2892\hspace\hspacex = \frac = - 10.2892\] So, we have one positive and one negative.

If your device is not in landscape mode many of the equations will run off the side of your device (should be able to scroll to see them) and some of the menu items will be cut off due to the narrow screen width.

Working separately, it will take the second machine 1 hour longer than the first machine to stuff a batch of envelopes.

How long would it take each machine to stuff a batch of envelopes by themselves?

\[\begin625 & = 90000\ 625 400 - 1600t 1600 & = 90000\ 1025 - 1600t - 88400 & = 0\end\] Now, the coefficients here are quite large, but that is just something that will happen fairly often with these problems so don’t worry about that.

Using the quadratic formula (and simplifying that answer) gives, \[t = \frac = \frac = \frac\] Again, we have two solutions and we’re going to need to determine which one is the correct one, so let’s convert them to decimals.