Which pair of numbers is relatively prime? 12 and 54 21 and 50 15 and 27 9 and 21

What is coefficient of the term of degree of degree 5 in the polynomial below

In angle pqr find the measure of

Hurrya vegetable garden and a surrounding path are shaped like a square that together are 11ft wide. the path is 2ft wide if one bag of gravel covers 9 square feet how many bags are needed to cover the path