Matrices A, B, and C are all 2 x 2, determine whether the equation is true for the given matrices. C(A + B) = AC + BC a. True b. False

For matrices, A + B = B + A.

a. True b. False

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

How many doughnuts are equal to 20 cookies.? 3 apples = 5 bananas6 cookies = 7 apples2 doughnuts = 1 banana

Which of the following is equal to the rational expression when x is not equal to -2 or -6?