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

the answer is a

step-by-step explanation:

because if you put 1 in to the square root of x it equals 300.

the answer to the expression is 83

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.