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velikii [3]
4 years ago
6

Which matrix represents the system of equations shown below

Mathematics
2 answers:
qwelly [4]4 years ago
6 0

its C because you put the question


azamat4 years ago
5 0

Answer:

C) option is correct.

Step-by-step explanation:

Given : 4x + 2y - 4 and 12x -y - 26.

To find : Which matrix represents the system of equations shown below.

Solution : We have given

4x + 2y - 4 = 0

12x -y - 26 = 0

Expressing Systems of Equations as Matrices:

ax +by = α

cx +dy = β

Can be represent in matrices as \left[\begin{array}{ab}a&b\\c&d\end{array}\right] * \left[\begin{array}{ab}x\\y\end{array}\right] =  \left[\begin{array}{ab}\alpha \\\beta \end{array}\right].

Then,

On comparison  matrix would be

\left[\begin{array}{ccc}4x&2y\\12x&-y\\\end{array}\right]\left[\begin{array}{ccc}4\\26\\\end{array}\right].

Therefore, C) option is correct.

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If a=8 and b=4, evaluate the following expression:2a−3b​
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Step-by-step explanation:

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7 0
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Read 2 more answers
Can someone please answer this???? ASAP
timofeeve [1]

Answer:

A. y=-\dfrac{8}{7}x-\dfrac{18}{7}

Step-by-step explanation:

Let y=mx+b be the equation of the perpendicular line.

Two perpendicular lines have slopes with product equal to -1. The slope of the given line is \frac{7}{8} Hence,

\dfrac{7}{8}\cdot m=-1\\ \\m=-\dfrac{8}{7}

is the slope of needed line.

This line passes through the point (-4,2), so its coordinates satisfy the equation:

2=-\dfrac{8}{7}\cdot (-4)+b\\ \\b=2-\dfrac{32}{7}=-\dfrac{18}{7}

Therefore, the equation of the line is

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7 0
3 years ago
How to solve the equation 8b - 12 = 5b
Virty [35]

Answer:

b = 4

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

8b - 12 = 5b

<u>Step 2: Solve for </u><em><u>b</u></em>

  1. Subtract 5b on both sides:                    3b - 12 = 0
  2. Add 12 on both sides:                            3b = 12
  3. Divide 3 on both sides:                          b = 4

<u>Step 3: Check</u>

<em>Plug in b to verify it's a solution.</em>

  1. Substitute:                  8(4) - 12 = 5(4)
  2. Multiply:                      32 - 12 = 20
  3. Subtract:                     20 = 20

And we have our final answer!

4 0
3 years ago
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