When you have a square root times a square root do you multiply the insides as well?

What is the remainder when 3x^2-x-10 is divided by x-1 -6,-7,-8, or -9

Currently, the largest cruise ship has a tonnage of 225,282 gross tons (gt). which of the following is a reasonable estimate for the tonnage of this cruise ship? a. 2 × 10^5 gt b. 2 × 10^6 gt c. 2 × 10^-5 gt d. 2 × 10^-6 gt

Betty correctly answers 30 questions on your math test there are 40 questions on the test what percent of the questions did she answered incorrectly