Determine if these matrices are inverses by calculating AB: matrix 1matrix 2 matrix 3 c11 = ⇒ 1 c12 = ⇒ 0 c21 = ⇒ 0 c22 = ⇒ 1 So the matrices inverses of one another. Now calculate BA: matrix 4 Find d11 = d12 = d21 = d22 =

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

If angle 2=3x +1 and angle 3=2x +4what is angle 2

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks