Perform the matrix multiplication.Find AB for A =
and B =
.
A.
B.
C.
D.
Answer: B
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The sizes of two matrices are given. Find the size of the product AB and the size of the product BA, if the given product can be calculated.A is 1 × 3; B is 3 × 1.
A. AB is 1 × 1; BA cannot be calculated. B. AB is 1 × 1; BA is 3 × 3. C. AB is 3 × 3; BA is 1 × 1. D. AB cannot be calculated; BA is 3 × 3.
Perform the indicated operation.37 ? (-21)
A. 777 B. -814 C. -777 D. -877
Solve the problem.If an object is dropped off of a tower, the velocity, V, of the object after t seconds can be obtained by multiplying t by 32 and adding 10 to the result. Express V as a linear function of t.
A. V(t) = 32 + 10t
B. V(t) = 32t + 10
C. V(t) = 42t
D. V(t) =
Multiply vertically.(3x2 - 3x - 4)(x2 - 2x - 5)
A. 3x4 - 9x3 - 13x2 + 23x + 20 B. 3x4 - 6x3 - 9x2 + 23x + 20 C. 3x4 - 6x3 - 13x2 + 23x + 20 D. 3x4 - 9x3 - 9x2 + 23x + 20