The area of a triangle is 30
square inches. The height is
5 in. Find the base.

Two parallel lines are crossed by a transversal.what is value of x

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?

Daniel bought a computer game for $25 and later sold it to thomas for a 40% profit. how much did daniel sell the computer game for?