Can someone check on this problem if i did it right this problem is about law of cosines just look at #1

Do not comment if you aren’t going to . create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b