The area of a rooftop can be expressed as 9x^2+6x+1. the rooftop is a quadrilateral.

part a. what type of quadrilateral is the rooftop? justify your answer.
part b. if the area of the rooftop is 361 m^2, what is the length of one side of the rooftop?

Which statement accurately explains whether a reflection over the y-axis and a 270° counterclockwise rotation would map figure acb onto itself? a coordinate plane with figure acb with point a at 1, 1, c at 3, 4 and b at 5, 1 yes, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) yes, a″c″b′ is located at a″(1, 1), c″(3, 4), and b″(5, 1) no, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) no, a″c″b″ is located at a″(1, 1), c″(3, 4), and b″(5, 1)

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

For the right triangle shown, the lengths of two sides are given. find the third side. leave your answer in simplified, radical form.