Two angles are complementary. One angle measures (5x)degrees and the 30degrees which equation will help to solve for the value of x

A.5x=30
B.5x+30=90
C.5x-30=90
D.5x+30=180

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?

The numbers on a football field indicate 10 yard increments. you walk around the perimeter of a football field between the pylons. you walk a distance of 30623 yards. find the area and perimeter of the indicated regions. write your answers as mixed numbers, if necessary. a. one end zone: perimeter: yd area: yd2 b. the playing field (not including end zones): perimeter: yd area: yd2 c. the playing field (including end zones): perimeter: yd area: yd2

The length of the line segment ac is 8x-9 what is the value of x