Find the inverse of the matrix above using (a) gaussian elimination and (b) cofactors. which method do you prefer? (1 mark available for this, the purpose is to see whether one method is strongly preferred and thus may be best to advise others to try first.) be sure to fully document the steps you take and also verify that the inverse you calculate is correct.

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

Leonardo wrote an equation that has an infinite number of solutions. one of the terms in leonardo’s equation is missing, as shown below.

Will make ! for correct answer the dot plot below shows the number of toys 21 shops sold in an hour. is the median or the mean a better center for this data and why? a. median; because the data is not symmetric and there are outliersb. median; because the data is symmetric and there are no outliersc. mean; because the data is symmetric and there are no outliersd. mean; because the data is skewed and there are outliers