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hram777 [196]
3 years ago
7

Marci and Levi add 113.5 + 22.41. If the whole numbers are added, the sum would be ??

Mathematics
1 answer:
AlexFokin [52]3 years ago
7 0

Answer:

(the real answer would be 135.91) The numbers add (just the whole numbers) would be 135

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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 
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\left[\begin{array}{ccc}3&5&42\\6&5&54\\\end{array}\right] 

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

⇒ <span>Simplify rows
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\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. 
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⇒ 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
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5 0
3 years ago
Plzz help me with thsi quistion
Salsk061 [2.6K]

Answer:

98 ft

Step-by-step explanation:

14x7

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8 0
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Answer:

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Step-by-step explanation:

To solve the question you must know some facts about inequalities

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  • If the sign of inequality is > or <, then it represents graphically by a dashed line
  • If the sign of inequality is > or ≥, then the area of the solutions should be over the line
  • If the sign of inequality is < or ≤, then the area of the solutions should be below the line

Let us study the graph and find the correct answer

∵ The line represented the inequality is solid

∴ The sign of inequality is ≥ or ≤

→ That means the answer is A or B

∵ The shaded area is the area of the solutions of the inequality

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→ That means the correct answer is A

∴ The inequality which represents the graph is y ≤ -2x + 1

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Answer:

Answer Undefined

Step-by-step explanation:

This line is a vertical line because the x coordinate is the same on both points (5 is the x coordinate in both points). Vertical line's slopes are undefined because they go from up to down.

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jarptica [38.1K]

Answer:

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Step-by-step explanation:

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if you’re asking for a general form quadratic equation, then sorry, I am unable to help you with that :(

5 0
2 years ago
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