What are the angles of a triangle with the sides 10, 8, 7
2 answers:
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<h2>Hello!</h2>
The answer is:
The area of this figure is 946 square inches.
<h2>Why?</h2>We can see that the figure is composed by two rectangles with diferrent dimensions, so, to calculate the area of the entire figure.
So,
For the first rectangle, we have:
The area will be:
For the second rectangle, we have:
The area will be:
Now, calculating the area of the entire figure, we have:
Have a nice day!
(a) True. Suppose A is a not a square matrix, with m rows and n columns. Then A² is not defined, because you can't multiply an m×n matrix by another m×n matrix.
(b) False. As an example, consider the matrices
Then both AB and BA are defined, with
In general, you can multiply any m×n by any n×m matrix.
(c) True. Multiplying a m×n matrix by a n×m matrix always yields a m×m matrix, and multiplying a n×m matrix by a m×n matrix always yields a n×n matrix.