In the diagram, AD = DC, DE || AB, and DE = 4. Find AB.

HELP PLZZZ

"how does lena finally defeat the robots? ” this question will best be used to describe the story’s exposition. rising action. climax. falling action.

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Solve the equation by completing the square. x^2+2x=17