If it takes about 20 minutes to grade a student paper how long in hours does it take to grade palers for a class of 25 people

If 90° < θ < 180° and cotθ = -1/3, then cscθ =

Apool measures 100 meters by 100 meters a toddler inside the pool and trows a ball 60 centimeters from one edge of the pool.how far is the ball from the opposite edge of the pool

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq