Simplify (a^root2)/root8. What can this be reduced to?

Atransformation t : (x, y) (x-5,y +3) the image of a(2,-1) is

The letters g e o r g i a are placed in a bag . if you picked a card and knew it was a vowel , what is the probability that it is an a ?

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.