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Makovka662 [10]
3 years ago
7

What is the Answer???

Mathematics
1 answer:
MAXImum [283]3 years ago
3 0

Answer: 190

Step-by-step explanation:

55 +50+90= 195

then round it and you get 195

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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 
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\left[\begin{array}{ccc}1&0&4\\0&1&6\\\end{array}\right] 

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

 
</span>

5 0
3 years ago
One number is 1/2 of another number. The sum of the two numbers is 3. Find the two numbers.
Pepsi [2]

Answer:

The answer is 2 and 1

Step-by-step explanation:

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8 0
3 years ago
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tamaranim1 [39]

Answer:

<em>y = (x - 4) - 4 </em>

Step-by-step explanation:

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(- 2, - 10)

(4 , - 4)

m = \frac{-4+10}{4+2} = 1

y + 4 = (x - 4) ⇒ <em>y = (x - 4) - 4</em>

5 0
3 years ago
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lora16 [44]

Answer:

77 is a composite number

Step-by-step explanation:

41 = 1 × 41

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89 = 1 × 89

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8 0
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Ne4ueva [31]
Then it would be 24:8
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3 years ago
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