Simplify the given expression into the form a+bi, where a and b are rational numbers. 2(-36 - 3i) +(5 +2i)(12 - 2i)

Consider the line y = -3/-2 x +6. find the equation of the line that is perpendicular to this line and passes through the point (-9,-3). find the equation of the line that is parallel to this line and passes through the point (-9,-3).

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

The measure of an angle is 117°. what is the measure of a supplementary angle?