Darell made a scale drawing if a house its lot he used the scale 1 inch: 9 feet in the drawing the backyard is 5inches wide what is the width of the actual yard

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

What is the solution set of the quadratic inequality x^2-5< or equal to 0