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Polygon \( \mathrm{ABCD} \cong \) Polygon JKLM \[ \begin{array}{l}\mathrm{AC}=10 \mathrm{x}+6 \\ \mathrm{JL}=9 \mathrm{x}+17\end{array} \] Find the value of x and JL. Provide answers accurate to the nearest hundredth.

Ask by Vaughan Ross. in the United States
Feb 18,2025

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Tutor-Verified Answer

Answer

\( x = 11 \) and \( JL = 116 \).

Solution

To solve for \( x \) and \( JL \), we start with the information given about the congruent polygons \( \mathrm{ABCD} \) and \( \mathrm{JKLM} \). Since the polygons are congruent, the corresponding sides are equal. Therefore, we can set up the equation: \[ AC = JL \] Substituting the expressions for \( AC \) and \( JL \): \[ 10x + 6 = 9x + 17 \] Now, we will solve for \( x \) step by step. 1. **Isolate \( x \)**: - Subtract \( 9x \) from both sides: \[ 10x - 9x + 6 = 17 \] This simplifies to: \[ x + 6 = 17 \] 2. **Subtract 6 from both sides**: \[ x = 17 - 6 \] Thus, we find: \[ x = 11 \] Now that we have the value of \( x \), we can substitute it back into the expression for \( JL \): \[ JL = 9x + 17 \] Substituting \( x = 11 \): \[ JL = 9(11) + 17 \] Calculating this gives: \[ JL = 99 + 17 = 116 \] Thus, the final answers are: - The value of \( x \) is \( 11 \). - The value of \( JL \) is \( 116 \). Both answers are accurate to the nearest hundredth, though they are whole numbers. Final results: - \( x = 11 \) - \( JL = 116 \)

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Since the polygons \( \mathrm{ABCD} \) and \( \mathrm{JKLM} \) are congruent, the corresponding sides are equal. Therefore, we can set the expressions for the lengths of diagonals \( \mathrm{AC} \) and \( \mathrm{JL} \) equal to each other: \[ 10x + 6 = 9x + 17. \] Now, let's solve for \( x \): 1. Subtract \( 9x \) from both sides: \[ 10x - 9x + 6 = 17, \] which simplifies to: \[ x + 6 = 17. \] 2. Next, subtract 6 from both sides: \[ x = 17 - 6, \] leading to: \[ x = 11. \] Now that we have found \( x = 11 \), we can find the length of \( \mathrm{JL} \): \[ \mathrm{JL} = 9x + 17 = 9(11) + 17 = 99 + 17 = 116. \] Thus, the value of \( x \) is \( 11 \) and the length of \( \mathrm{JL} \) is \( 116 \).

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