Find the volume of the sphere. Use pi in ur answer radius is 7.

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Could someone with number 1 and 2

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6