I need to know what –5(–2) equals.

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?