What operation is best to use to solve the problem? A submarine at -42 feet dives 45 feet. What is the submarine's elevation after the dive? a. addition
b. subtraction
c. multiplication
d. division

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]

Agraph of a trapezoid can have diagonals with slopes that are negative reciprocals and two pairs of adjacent sides that are congruent, true or false, and why

What is the absolute value of the complex number -4-sqrt2i