Answered

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What is the missing reason in step 3?

\begin{tabular}{ll|ll}
\multicolumn{1}{c|}{\textbf{Statements}} & & \multicolumn{1}{c}{\textbf{Reasons}} \\
\hline
1. [tex]$m \angle TRV = 60^{\circ}; \, m \angle TRS = (4x)^{\circ}$[/tex] & 1. & Given \\
2. [tex]$\angle TRS$[/tex] and [tex]$\angle TRV$[/tex] are a linear pair & 2. & Definition of linear pair \\
3. [tex]$m \angle TRS + m \angle TRV = 180^{\circ}$[/tex] & 3. & \textbf{Linear pair postulate} \\
4. [tex]$60 + 4x = 180$[/tex] & 4. & Substitution property of equality \\
5. [tex]$4x = 120$[/tex] & 5. & Subtraction property of equality \\
6. [tex]$x = 30$[/tex] & 6. & Division property of equality \\
\end{tabular}

Sagot :

GinnyAnswer
Sure, let me break down the steps and provide the missing reasoning for step 3.

Here's the complete solution with detailed reasoning:

1. \( m \angle TRV = 60^{\circ} ; m \angle TRS = (4x)^{\circ} \)
- Reason: Given

2. \( \angle TRS \) and \( \angle TRV \) are a linear pair
- Reason: Definition of linear pair

3. \( m \angle TRS + m \angle TRV = 180^{\circ} \)
- Reason: Linear pairs of angles are supplementary (definition of supplementary angles)

4. \( 60 + 4x = 180 \)
- Reason: Substitution property of equality (substituting the given measures of the angles into the equation)

5. \( 4x = 120 \)
- Reason: Subtraction property of equality (subtracting 60 from both sides)

6. \( x = 30 \)
- Reason: Division property of equality (dividing both sides by 4)

Here is the completed table with the missing reason in step 3:

\begin{tabular}{ll|ll}
\multicolumn{1}{c|}{ Statements } & & \multicolumn{1}{c}{ Reasons } \\
\hline
1. [tex]$m \angle TRV = 60^{\circ} ; m \angle TRS = (4x)^{\circ}$[/tex] & 1. & given \\
2. [tex]$\angle TRS$[/tex] and [tex]$\angle TRV$[/tex] are a linear pair & 2. & definition of linear pair \\
3. [tex]$m \angle TRS + m \angle TRV = 180^{\circ}$[/tex] & 3. & linear pairs of angles are supplementary \\
4. [tex]$60 + 4x = 180$[/tex] & 4. & substitution property of equality \\
5. [tex]$4x = 120$[/tex] & 5. & subtraction property of equality \\
6. [tex]$x = 30$[/tex] & 6. & division property of equality \\
\end{tabular}

The missing reason in step 3 is "linear pairs of angles are supplementary".
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