Solve the system of equations by elimination. Show your work using the Scratchpad. \left\{\begin{array}{l}-5x+y=-3\\5x -3y=-1\end{array}\right.{
−5x+y=−3
5x−3y=−1

Find the difference (8ab+a+2) - (3ab+6)

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?

Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?