Why is the greatest common factors with 2 numbers sometimes 1

Kyle and Julie are playing a game where they flip a fair coin four times and try to predict the outcomes ... Using the sample space of possible outcomes listed below, answer each of the following questions.

Find all of the polar coordinates for (6, 31 degrees)

If the product of two positive numbers is 18, and 1 number is 7 greater than the other, what are the two numbers?

Four times the sum of a number X and two is sixteen

3x + - 0.5 (x + 3) + 4 = 14

22 + (-18) find the sum of the answer

How to solve 2a-8a=12-8a

140 tests is ___% of 160 tests

Graph the functions f (x) = -6x+2 and g (x) = -2x+2+6 on the same coordinate plane. What are the solutions of the equation - 6x+2=-2x+2+6? Select each correct answer.

John has a kite shaped like a rhombus. It's two diagonals measure 22 inches and 13 inches. What is the area of John's kite?