If you use a pair of x- and y-coordinates (x, y) to represent a point in a two-
dimensional Cartesian coordinate system, how would you represent a point in
a three-dimensional Cartesian coordinate system?

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?