Acity water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from the tank so that it has of the water that it started with? the technician must remove more gallons of water for the tank to have of the water that it started with.

answer: l

step-by-step explanation:

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.