What is the greatest common factor of 20, 50, and 30?

That table shows measurements (in invhes$ from cubes with different side lengths. which pairs of variables have a linear relationship? check all that apply

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

Prove that 16^4-2^13-4^5 is divisible by 11.