PLEASE HELP, THE QUESTION IS IN THE PICTURE. I NEED HELP OR IM GOING TO FAIL

Giving ad is congruent to bc and angle bcd is congruent to angle adc prove d e is going to ce

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.

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)