14 marks 4.
14 marks
Diagram NOT
accurately drawn
36°
R
С
Р
Q
P. Q, R and S are points on a circle, centre C.
PCR is a straight line.
Angle PRS = 36
Calculate the size of angle RQS.
Give a reason for each step in your working.

What is the result of adding the system of equations? 2x+y=4 3x-y=6

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

In terms of x, find an expression that represents the area of the shaded region. the outer square has side lengths of (x+5) and the inner square has side lengths of (x-2), as shown. area: a1 x + a2 square units submit