To multiply B and A, the number of columns of B must matc the number of rows of A.
<h3>
When we can multiply two matrices?</h3>
When we multiply two matrices, A and B, we multiply the rows of matrix A by the columns of matrix B.
Now, the number of elements in a row of a matrix, is equal to the number of columns (and the number of elements in a column is equal to the number of rows).
To multiply BxA:
Then, a row on matrix B must have the same number of elements than a column in row A.
Then, to multiply BxA, the number of columns of B must match the number of rows of A, meaning that the correct option is the last one.
If you want to learn more about matrices, you can read:
brainly.com/question/11989522
Answer:
Step-by-step explanation:
-In a right triangle, the Sine of the base acute angle is usually given as:
-In ΔVWX,, VX is the opposite and WV the hypotenuse.
-Therefore, sine of ∠Wis calculated as;
Hence, sine of ∠W is given represented by the ratio 
Answer:
5(x-3)
Step-by-step explanation:
The word "SUM" means the answer to an "ADDITION".
"SUM" is always used with the word "AND" to indicate which numbers are being added.
The SUM of a number AND -3 is written as:
(
x
+
(
−
3
)
),
or (
x
-3
)
(where we have chosen the number to be x
.)
But we want FIVE of those sums; this means:
5 (
x
−
3
)
Answer:
9 inches ?
Step-by-step explanation:
im not 100% sure
Rewrite this as x^2 - 2^2.
This is a special product, the difference of two squares. The factors are
(x-2) and (x+2).
