All of these methods can be used to show that two triangles are similar except

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?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Find the value of x. give reasons to justify your solutions! l, m ∈ kn