The sum of the measures of two exterior angles of a triangle is 264 degrees what is the measure of the third exterior angle

Can you simplify 4/7? 24 points will be awarded!

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

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?