The greatest common factor for 21 is 7
For 30 is 15
49 is 7
I’m no totally sure but i think that is right
you're correct. its to take out the greatest common factor.
you will save 6 dollars If you buy 2 packages, instead if 6 individual pairs.
Answer:
r = 
Step-by-step explanation:
We simply are rearranging C= 2πr in terms of <em>r</em>. We just divide 2π on both sides.