Check all that apply?

Using elimination, what is -4x+2y=-12 4x+8y=-24

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.