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ruslelena [56]
2 years ago
15

Which system of equations corresponds to this matrix multiplication operation

Mathematics
2 answers:
dedylja [7]2 years ago
8 0

Answer:

Option B

Step-by-step explanation:

I just completed the test.

faltersainse [42]2 years ago
3 0

Answer:

Option (B)

Step-by-step explanation:

\begin{bmatrix}5 & 2 & 1\\ 7 & -5 & 2\\ -5 & 3 & 1\end{bmatrix}\times \begin{bmatrix}x\\ y\\ z\end{bmatrix}=\begin{bmatrix}16\\ 3\\ 12\end{bmatrix}

By applying multiplication property of the matrices,

\begin{bmatrix}(5x+2y+z)\\ (7x-5y+2z)\\(-5x+3y+z) \end{bmatrix}=\begin{bmatrix}16\\ 3\\ 12\end{bmatrix}

Therefore, system of equations formed will be,

5x + 2y + z = 16

7x - 5y + 2z = 3

-5x + 3y + z = 12

Option (B) will be the correct option.

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Sawyer got a gift card for his birthday and
Nady [450]

Answer:

<em>Sawyer has to pay $10 each week to pay his mom back</em>

Step-by-step explanation:

Sawyer got a gift card that he wants to use to purchase a video game that costs $60, but he can only cover 50% of it, that is, $30.

The remaining $30 will be covered by his mom, given he pays the money back in three weeks.

If he pays the same amount each week, then each week he should pay $30 / 3 = $10

Sawyer has to pay $10 each week to pay his mom back

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2 years ago
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netineya [11]

Answer:

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Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Help please
77julia77 [94]

Solution:

<u>Note that:</u>

  • Given inequality: 3 < x + 3 < 6

<u>Solving the inequality one by one.</u>

  • 3 < x + 3
  • => -3 + 3 < x
  • => 0 < x
  • => x + 3 < 6
  • => x < 6 - 3
  • => x < 3

The inequality is <u>0 < x < 3.</u>

7 0
2 years ago
What is 9c-c equal when u combined like terms
vodka [1.7K]

What is 9c-c equal when u combined like terms?

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4 0
3 years ago
Not sure how to solve this
Diano4ka-milaya [45]

Step-by-step explanation:

You just have to plug the numbers they give you into the equation. For the first one, you have 0 + 5y = 10; 5y = 10; y = 2. For the second one, x + 5(0) = 10; x + 0 = 10; x = 10. And lastly, for the third one, x + 5(6) = 10; x + 30 = 10; x = -20.

7 0
3 years ago
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