ABCD are points on the circumference of a circle centre 0. Angle BCD = 130°
Angle ABC = 105°
Angle OBC = Angle ODC
А
Not drawn
accurately
105
130
с
Work out the size of angle ADO marked c on the diagram.
(4 marks)

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?

3x + 4y = 5 x- 3y = -7 solve by substitution

The customer price index(cpi), which measures the cost of a typical package of customer goods,was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely.use data points to find such a line and then estimate the requested quantities