Find the greatest common factor of 15 and 42

3 is the greatest common factor of 15 and 42 is the correct answer.

First you had to find the prime factorization of 15: 1, 3, 5, 15. And then, you had to find the prime factorization of 42: 1, 2, 3, 6, 7, 42. You can also to used their factor of 15: . And then you can also to used their factor of 42: . And it gave us the final answer is 3 is the greatest common factor of 15 and 42. Hope this helps! And thank you for posting your question at here on , and have a great day. -Charlie

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb