Arectangular athletic field is twice as long as it is wide. if the perimeter of the athletic field is 72 yards, what are its dimensions?
what is the width? in yards

There are 12 boy and13 girls in a class. if the teacher randomly chooses a student’s name out of a hat what is the probability it will be a girl

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days