Step-by-step explanation:
<u>Here:</u>
<u>Therefore, the matrix A + 2B will be:</u>
<u>Therefore:</u>
<u>Matrix:</u> A matrix is a rectangular arrangement of numbers in the form of horizontal and vertical lines.
Horizontal lines are called rows and vertical lines are called columns.
<u>Order of Matrix:</u> A matrix containing x rows and y column has order x × y and it has xy elements.
<u>Different types of matrices:</u>
Row Matrix: This type of matrices have only 1 row. <u>Example:</u>
<u>Column Matrix:</u> This type of matrices have only 1 column. Example:
<u>Square Matrix:</u> In this type of matrix, number of rows and columns are equal. Example:
<u>Zero Matrix:</u> It is a matrix with all elements present is zero. Example:
<u>Identity Matrix:</u> In this type of matrix, diagonal element is 1 and remaining elements are zero. An Identity matrix is always a square matrix. Example:
Answer:
Step-by-step explanation:
<u>The volume of the box:</u>
<u>Substitute values:</u>
- V = 3 1/4 × 3 × 1 = 13/4 × 3 = 39/4
<u>The volume of each block:</u>
<u>Number of blocks that the box can fit:</u>
- 39/4 ÷ 1/64 = 39/4 × 64 = 39 × 16 = 624
Correct choice is C
Answer:
(3x+2)(3x+2)
Step-by-step explanation:
9x²+12x+4 Find two numbers that multiply to 9 and to other numbers that add to 4.
This numbers would be 3 and 2.
Since the 9 has an x², the 3 must be put with the x. Also the 2 must be positive because of all of the numbers being positive.
(3x+2)(3x+2)
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