3.1 The following table shows the employees of a small manufacturing company cross-classified based on age and work category.
Work category
Age Production Sales
Office Total
Group
<25
50
50
102
25-40
24
50
>40
40
4
10
54
Total
160
30
110
N
3.1.1 Copy and complete the cross-tabulation table above.
[3]
3.1.2 An employee is selected at random from this population. Calculate the
probability that the employee is:
(a) Under 40 years of age.
[1]

please edit this i dont know what all this means yet

Step-by-step explanation:

450

step-by-step explanation:

you get texts and minutes, so why not

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3