What is the simplified form of the square root of 48n^9

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

Change negative exponents to positive, then solve