Answer:
The standard deviation on the critical path = 0.834
Step-by-step explanation:
Variance of activity A (
) = 0.33
Variance of activity B (
) = 0.67
Variance of activity C (
) = 0.33
Variance of activity D (
) = 0.17
Thus the standard deviation on the critical path (
) =
+
+
+ 
=
+
+
+
= 0.6956
= 0.834
The standard deviation on the critical path = 0.834
X+1=1 find x
1. x=1-1
2. x=0
solved
A minimum because the function is positive. Positive quadratic functions always concave upwards (in a “bowl-like” shape), creating a curve/minimum at the bottom.
Answer: 
Step-by-step explanation:
Negative four -> 
Times the sum of a number and 3 -> 
Is at least 28 -> 
4) 62.8 cm^2
5) It is quadrupled