A 50 kg woman has a momentum of 210 kg m/s. What is her velocity? (A) 10,500 m/s
(B) 4.2 m/s
(C) 0.24 m/s

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

What number should be added to both sides of the equation to complete this square? x^2-10x=7

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?