89.396668 ... rational or irrational number?

Given a system of linear equations: dy/dx = 4x-y dy/dx = x-2y Find the general solution.

A bottle of medicine contains 40 doses. How many doses are in 3 1/3 bottles?

The sum between two numbers is 170 and their difference is 110, what is the larger of the two numbers

How many floors are in the office building given that fast eddy delivered last pizza at 1210

A spool of rope contains 65 yards of rope. How many 4-foot pieces of rope can be cut from the spool? How much rope is left over?

Suppose that 1 euro is worth $1.25. In Europe, a book costs 19 euros. In Los Angeles, the same book costs $22.50. In which location is the book less expensive?

How do I solve 0.6:3.89

The spin on a washing machine takes out 35% of the water in clothes. The clothes in the washing machine contain 3 pints of water. How much water is left after a spin?

Jessie saved 6 dollars each week in how many weeks will she have saved at least 50 dallors

Many demographers predict that the United States will have zero population growth in the coming decades, in contrast to the historical average population growth of about 1 percent per year.