Find the z-score having area 0.8600 to its right under the standard normal curve; that is, find z0.8600. Use a table of areas for the standard normal curve to find the required z-score

One side of a rectangle is 7 centimeters shorter than six times the other side. find the length of the longer side if we also know that the perimeter of the rectangle is 266 centimeters.

What is the value of d? 9d = –5.4 d =

Find the simplified product: 3e cube 9x to the fourth power times three cube 3x to the eighth