In the diagram below, is the centre of the circle. AB is a diameter of the circle. Chord CF produced meets chord EB produced at D. Chord EC is parallel to chord BF. CO and AC are produced.
(Feb/March 2012)
Let Ô = 2x
= 20
N
2x
6
f
2
3
E
B В
D
4.1
Determine, in terms of x, the size of Êi.
4.2
Prove that DF=BD.
(4)
4.3 Show that Ĉi = Ĉs.
4.4: If DF = 5 cm and OA = 6 cm, calculate area ABFD : area AAOC.
(16)​

answer: a) 56% women

b)44% men

step-by-step explanation:

the translated point is (5,2)

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."