Answer:
The answer for the first one is 
a
The answer to the second one is 3b
Answer:
N(L) = 20
The expected number of left handed people is 20.
Step-by-step explanation:
Given;
Percentage of left handed people P(L) = 10%
Total number of selected people N(T) = 200
The Expected number of left handed people N(L) is;
N(L) = Total number of selected people × Percentage of left handed people/100%
N(L) = N(T) × P(L)/100%
Substituting the given values;
N(L) = 200 × 10%/100%
N(L) = 200 × 0.1
N(L) = 20
The expected number of left handed people is 20.
Answer:
Angles 1 and 8 because they are vertically aline
A diameter of a circle has to pass through the centre of the circle
The lines that pass through the centre are BD and AC
