The mass of one hydrogen atom is 1.67 x 10^-24 gram. Find the mass of 70,000 hydrogen atoms. Express the answer in scientific notation.

Marya wants to factor the polynomial 36x^3 -22x^2 - 144x.which term can she add to the polynomial that would not change its grestest common factor? check all that apply

You can find the constant of proportionality by finding the ratio of

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?