Can someone explain if I am wrong? My answers for this so far are:
A. (b-10)(b+10)=180 and b is 2√70
B. (2√70-10)=c, so C is 6.733201
C. (2√70+10)=d, so D is 26.733201

Name the quadrilaterals that have four equal sides.

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

Arational number that is equivalent to -20/4?