The diagram shows a pattern using four identical rhombuses. Diagram NOT
accurately drawn
25
25
25
Work out the size of the angle marked a.
You must show your working,

In the diagram of circle o, what is the measure of zabc?

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible