System A: -3x-2y=4; 5x-8y=-1 System B: 5x-8y=-1; -3x-2y=4

1) How can we get System B from System A?

In the diagram below, dab and dac are adjacent angles. if mdac = 25°, what is mdab in degrees? what is mbac in degrees?

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq