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jarptica [38.1K]
2 years ago
14

Anybody ????? I will mark you brainliest

Mathematics
2 answers:
Over [174]2 years ago
6 0
I think the answer is B
lesya [120]2 years ago
4 0
The answer is B ....
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Use the matrix tool to solve the system of equations. Choose the correct ordered pair.3x + 5y = 42 6x + 5y = 54
kobusy [5.1K]
Solutions  

In Matrix we use initially based on systems of linear equations.The matrix method is similar to the method of Elimination as but is a lot cleaner than the elimination method.Solving systems of equations by Matrix Method involves expressing the system of equations in form of a matrix and then reducing that matrix into what is known as Row Echelon Form.<span> 

Calculations 

</span>⇒ <span>Rewrite the linear equations above as a matrix 
</span>
\left[\begin{array}{ccc}3&5&42\\6&5&54\\\end{array}\right] 

⇒  Apply to Row₂ : Row₂ - 2 <span>Row₁ 
</span>
\left[\begin{array}{ccc}3&5&42\\0&-5&-30\\\end{array}\right] 

⇒ <span>Simplify rows
</span>
\left[\begin{array}{ccc}3&5&42\\0&1&6\\\end{array}\right] 

Note: The matrix is now in echelon form.
<span>The steps below are for back substitution. 
</span>
⇒ Apply to Row₁<span> : Row</span>₁<span> - </span>5 Row₂ 

\left[\begin{array}{ccc}3&0&12\\0&1&6\\\end{array}\right] 

⇒ <span>Simplify rows 
</span>
\left[\begin{array}{ccc}1&0&4\\0&1&6\\\end{array}\right] 

⇒ <span>Therefore, 
</span>
x=4&#10;&#10;y = 6
<span> 

 
</span>

5 0
3 years ago
A miner has 8 diamonds. He has 48 workers. Explain how each worker can get a piece of the diamonds.
Dmitrij [34]

Answer:

The worker can get a piece of the diamonds using 48÷8 which it is 6.

Step-by-step explanation:

I hope that it is what you're looking for. I hope this helps

6 0
2 years ago
Solve:<br> 2y + 5x=30<br> y = 3x + 4
mafiozo [28]
Replace the second equation y=3x+4 into the first one:
2(3x+4)+5x=30
Now solve for x:
6x+8+5x=30
11x=30-8
11x=22
x=22/11
x=2
Finally, replace x=2 into y=3x+4
y=3*2+4
y=6+4 = 10
So the anwer is x=2, y=10
6 0
3 years ago
Which statement best describes the solution to the equation below ?
SIZIF [17.4K]
Im going to say option 1
8 0
2 years ago
The state highway department is studying traffic patterns on one of the busiest highways in the state. As part of the study, the
Nesterboy [21]

Answer:

jfdslkhfbdjskbvdslkjfbv;kjdabva;ksjdvbljfslfdhglkdufhgdsrlkgujdsgljkdsfbvlkfdjdd;hgs;dihg;dsifvsj

Step-by-step explanation:

4 0
3 years ago
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