ADP and ABQ are tangents to the circle, centre O. C lies on the circumference of the circle.

D

P

Giving reasons for all the

statements you make, work out

angles DCO, CBO, OCB, and BCD,

all in terms of x.

O

Hence, work out obtuse angle DOB

and prove that y = 2x.

2x

B

Not drawn accurately

Abiologist is recording the loss of fish in a pond. he notes the number of fish, f, in the pond on june 1. on july 1 there were 63 fish in the pond, which is 52 fewer fish than were in the pond on june 1. which equation represents this situation? a. f – 52 = 63 b. f – 63 = 52 c. 63 – f = 52 d. f – 63 = –52

Find the cosine function that is represented in the graph.

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?