Turner just measured his dog and found out that it weighs 76 kilograms, which is 5% less than the last time Turner measured. How much did the dog weigh last time?

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?

Ten times the square of a non-zero number is eqaul to ninety times the number

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height