Angle a and angle b are vertical angles. if m angle a = (7x + 28) and m angke b = (5x+22) then find the measure of angle a

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola

Martha is training for a duathlon, which includes biking and running. she knows that yesterday she covered a total distance of over 55.5 miles in more than than 4.5 hours of training. martha runs at a speed of 6 mph and bikes at a rate of 15.5 mph.

The volume of a spherical hot air balloon v(r) = 4 3 ? r3 changes as its radius changes. the radius is a function of time given by r(t) = 3t. find the instantaneous rate of change of the volume with respect to t at t = 2.