Answer:
a) 11
Step-by-step explanation:
Since activity H came before all other activities, we can discard 14 and 18 as possible answers. Also the exercise tells us that all those activities came immediately after activity H, that means that activity H finishes right before the first activity from K, M and S starts. This means that activity H should end at 11, because that is the start time for the first activity.
4x + 1 = 6y
4x/6 + 1/6 = 6y/6
2x/3 + 1/6 = y.
4/6 is the same as 2/3 in lowest terms.
Let your number be x
your equation will be (x+11)x = -80
expand the equation x^2 +11x +80 = 0
solve the equation and find x
