Helen has to buy all the butter she needs to make 60 biscuits. She buys the butter in 250g packs. b) (i) What is the exact amount of butter she needs?
(ii) How many packs of butter will she have to buy?

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?