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3 years ago

Which property is shown below?

Mathematics

2 answers:

Tpy6a [65]3 years ago

5 0

Answer:

Step-by-step explanation:

The identity property for addition tells us that zero added to any number is the number itself.

anyanavicka [17]3 years ago

3 0

C identity property

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What is the value of x?

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then subtract 145 from 180 and you'll get
35 degrees as your missing angle so
X = 35

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4 years ago

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The perimeter of square is 24 meters. What is the length of one side of the square. Show your work

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3 years ago

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Maria bought seven boxes.A week later half of all her boxes were destroyed in a fire.there are now only 22 boxes left.with how m

Nikolay [14]

Answer:

37 boxes

Step-by-step explanation:

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3 years ago

Type the correct answer in each box.If matrix C represents (A − B) + A, the value of the entry represented by c41 is and the cor

strojnjashka [21]

Given the matrices A and B:

$\begin{gathered} A=\begin{bmatrix}{-5} & {3} & {8} & {} \\ {3} & {6} & {-5} & {} \\ {5} & {-9} & {0} & {} \\ {7} & {3} & {4} & {}\end{bmatrix} \\ \\ B=\begin{bmatrix}{-7} & {-8} & {-5} & {} \\ {7} & {9} & {2} & {} \\ {2} & {5} & {-7} & {} \\ {2} & {8} & {-7} & {}\end{bmatrix} \end{gathered}$

We know that:

$C=(A-B)+A=2A-B$

Then, using the matrices A and B:

$\begin{gathered} C=2\cdot\begin{bmatrix}{-5} & {3} & {8} & {} \\ {3} & {6} & {-5} & {} \\ {5} & {-9} & {0} & {} \\ {7} & {3} & {4} & {}\end{bmatrix}-\begin{bmatrix}{-7} & {-8} & {-5} & {} \\ {7} & {9} & {2} & {} \\ {2} & {5} & {-7} & {} \\ {2} & {8} & {-7} & {}\end{bmatrix} \\ \\ C=\begin{bmatrix}{-10} & {6} & {16} & {} \\ 6 & {12} & {-10} & {} \\ 10 & {-18} & {0} & {} \\ 14 & 6 & 8 & {}\end{bmatrix}+\begin{bmatrix}{7} & {8} & {5} & {} \\ -{7} & -{9} & -{2} & {} \\ -{2} & {-5} & {7} & {} \\ {-2} & -{8} & {7} & {}\end{bmatrix} \\ \\ \therefore C=\begin{bmatrix}{-3} & 14 & 21 & {} \\ -1 & {3} & {-12} & {} \\ 8 & {-23} & 7 & {} \\ 12 & -2 & 15 & {}\end{bmatrix} \end{gathered}$

And the element C₄₁ (fourth row and first column) is:

$C_{41}=12$

Now, for the matrix (A + B) - A = B:

$B_{41}=2$

3 0

2 years ago