Let B be the 3×3 matrix containing the cofactors, with each entry multiplied by the appropriate ± sign. That is, the ij-entry of B is (−1)i+j det(Mij ). Compute A·BT. You should get a diagonal matrix with the same number in every diagonal entry. In other words, a multiple of the identity matrix. What multiple is it (in terms of A)?

On the first of each month, shelly runs a 5k race. she keeps track of her times to track her progress. her time in minutes is recorded in the table: jan 40.55 july 35.38 feb 41.51 aug 37.48 mar 42.01 sept 40.87 apr 38.76 oct 48.32 may 36.32 nov 41.59 june 34.28 dec 42.71 determine the difference between the mean of the data, including the outlier and excluding the outlier. round to the hundredths place. 39.98 39.22 0.76 1.21

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

43lbs of tomatos cost $387. how much would 41lbs cost