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Shkiper50 [21]
2 years ago
14

Hi ! Can someone answer me this question please?

Mathematics
1 answer:
ser-zykov [4K]2 years ago
7 0

Answer:

2/7 gallons

Step-by-step explanation:

2 gallons per 7 hours.

2 divided by 7 = 2/7

sorry if im wrong.

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Let A be a 3 by 6 , B be a 6 by 7 and C be a 7 by 3 matrix. Determine the size of the following matrices (if they do not exist,
kozerog [31]

Answer:

a. AB: 3 by 7

b. BA: N by N

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Step-by-step explanation:

Given

A =3\ by\ 6

B =6\ by\ 7

C =7\ by\ 3

Required

The dimension of the following matrices

As a general rule:

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Using this rule, we have:

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So:

(a)\ AB

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(b)\ BA

B_{6*7} * A_{3*6} \to AB_{N * N}

The column numbers of B does not equal the row numbers of A.

Hence, BA does not exist

(c)\ A^TB

A^T implies that:

If A =3\ by\ 6, then

A^T = 6\ by\ 3

So:

A^T_{6*3} * B_{6,7} \to A^TB_{N*N}

The column numbers of A^T does not equal the row numbers of B.

Hence, A^TB does not exist

(d)\ BC

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