Which of the following shapes is convex?

How do i do this activity, is appreciated

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

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