Adam and Barbara each toss a Frisbee. Adam's Frisbee has initial position rA(0)=⟨0,0,−1⟩ and velocity vA(t)=⟨1,8t,3t2⟩, and Barbara's Frisbee has initial position rB(0)=⟨0,3,−4⟩ and velocity vB(t)=⟨2t,1,4⟩. At which time(s) t do the Frisbees collide? (Select all that apply.)

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters