Bert has 10 books and he wants to give 2 of these books to his sister. How many different gifts are possible?

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

The poll report includes a table titled, “americans using cash now versus five years ago, by age.” the age intervals are not equal. why do you think the gallup organization chose the age intervals of 23–34, 35–54, and 55+ to display these results?

What are the solutions of the equation x4 + 6x2 + 5 = 0? use u substitution to solve.