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Yanka [14]
4 years ago
6

If Matrix A has dimensions 1x3 and Matrix B has dimensions 3x4, can these be multiplied?

Mathematics
1 answer:
aalyn [17]4 years ago
4 0
A=1x3 means 1 row and 3 columns.
B=3x4 means 3 rows and 4 columns.

AB is a compatible multiplication because A has three columns and B has 3 rows.

However, BA is not a compatible multiplication because B has 4 columns while A has only 1 row.

The general trick is if you read the row/column of the two matrices as 1-3-3-4, and the two middle ones are identical, then AB would be a compatible multiplication.  On the other hand, BA would read 3-4-1-3, since 4 and 1 are not identical, so it is not a valid multiplication.

Do remember 1x3 means 1 ROW and 3 COLUMNS.
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The measure of YZ is 3.4 cm and the measure of c is 1.7 cm.

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<h3>What is a line segment?</h3>

A line segment is a part of a line that has two endpoints and a fixed length. It is different from a line that does not have a beginning or an end and which can be extended in both directions. In this lesson, we will learn more about a line segment, its symbol, and the way to measure a line segment.

Now, YZ=XZ-XY

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