An unknown quadrilateral has the following angle measures. 77°, 103°, 77°, 103° which of the following could be the unknown quadrilateral? a. parallelogram b. none of these c. square d. rectangle

Which of the following parabolas opens down?

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.