A/b + c/ b=?

answer choices are:
1) -ab/c
2) b/ac
3) ad/CBS
4)a+c/b
5) ab/c^2
6)ab+c/b

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

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

Tom drove 206 miles in 3.9 hours. estimate his average speed.