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sattari [20]
3 years ago
6

What is the product?

Mathematics
2 answers:
Maurinko [17]3 years ago
5 0

Answer:

option C

  15         14

  -1           9

Step-by-step explanation:

Given in the question a 2x3 and 3x2 matrix

Since, the column of first matrix and row of second matrix is of equal integer, 3, so we can multiply them.

The resultant matrix will be of 2x2

We will use dot product

  1(2) + 3(3) + 1(4)              1(-2) + 3(5) + 1(1)      

-2(2) + 1(3) + 0(4)             -2(-2) + 1(5) + 0(1)  

      15         14

      -1          9

 

Savatey [412]3 years ago
5 0

<u>Answer:</u>

The correct answer option is:

\left[\begin{array}{ccc}15&14\\-1&9\\\end{array}\right]

<u>Step-by-step explanation:</u>

For two matrices to be multiplied, the number of columns in the first matrix should be equal to the number of rows in the 2nd one.

Then we multiply the elements of each row of the first matrix by the elements of each column in the second matrix and add them.

(1 \times 2)+(3 \times 3)+(1 \times 4) =2+9+4=15

(1 \times -2)+(3 \times 5)+(1 \times 1) =-2+15+1=14

(-2 \times 2)+(1 \times 3)+(0 \times 4) =-4+3+0=-1

(-2 \times 2)+(1 \times 5)+(0 \times 1) =4+5+0=9

So we get:

\left[\begin{array}{ccc}15&14\\-1&9\\\end{array}\right]

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Get y in terms of x then substitute the expression into the other equation.

#7.
y - 2x = -6
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#8.
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3 years ago
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Hello there, and thank you for posting your question here on brainly.

Short answer: C. 9

Why?

Box and whisker plots are confusing, the line in the middle is the median, but we don't need to do that now. The dots on the lines outside of the box show the largest and the shortest number. The plotted point on the way left is your answer, the line plotted is 9.

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