SOLUTION: Complete the Multiplication 2Ea E=[1,2] A=[3,0,2,-1] Answers: A.[7,-2] B.[7,-4] C.[14,-4] D.14,4]

Algebra ->  Matrices-and-determiminant -> SOLUTION: Complete the Multiplication 2Ea E=[1,2] A=[3,0,2,-1] Answers: A.[7,-2] B.[7,-4] C.[14,-4] D.14,4]      Log On


   



Question 586808: Complete the Multiplication 2Ea
E=[1,2] A=[3,0,2,-1]
Answers:
A.[7,-2]
B.[7,-4]
C.[14,-4]
D.14,4]

Answer by solver91311(24713) About Me  (Show Source):
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What does "2Ea" mean? If you mean 2 times E times A, you cannot complete the product since matrix multiplication requires that the number of columns in the first factor be equal to the number of rows in the second factor. Here you have 2 columns in E, but only 1 row in A.

John

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