In parallelogram WXYZ, what is CY? O 11 ft O 15 ft (x+4) ft (2x-7) t O 21 ft O23 ft

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
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### Geometry Problem: Finding Segment Length in a Parallelogram

**Question:**
In parallelogram WXYZ, what is the length of segment CY?

**Options:**
- 11 ft
- 15 ft
- 21 ft
- 23 ft

**Diagram Description:**
The given problem includes a diagram of a parallelogram WXYZ. Within the parallelogram, there are two intersecting diagonals WX and YZ. 

- The length of segment WX is represented as (x + 4) feet.
- The length of segment YZ is represented as (2x - 7) feet.
- The diagonals intersect at point C.

**Solution:**
To solve for the length of segment CY, students need to use the properties of parallelograms and solve the system of equations for x. Based on the options provided, determine which value of x satisfies both expressions for the lengths of WX and YZ.

**Answer Explanation:**
1. Set the equations equal to each other, as the diagonals bisect each other in a parallelogram:
    (x + 4) = (2x - 7)

2. Solve for x:
    x + 4 = 2x - 7 
    4 + 7 = 2x - x 
    11 = x

3. Substitute x back into the expressions to find the lengths of the segments.

This method provides the necessary steps to determine the correct length for CY based on the given options.
Transcribed Image Text:### Geometry Problem: Finding Segment Length in a Parallelogram **Question:** In parallelogram WXYZ, what is the length of segment CY? **Options:** - 11 ft - 15 ft - 21 ft - 23 ft **Diagram Description:** The given problem includes a diagram of a parallelogram WXYZ. Within the parallelogram, there are two intersecting diagonals WX and YZ. - The length of segment WX is represented as (x + 4) feet. - The length of segment YZ is represented as (2x - 7) feet. - The diagonals intersect at point C. **Solution:** To solve for the length of segment CY, students need to use the properties of parallelograms and solve the system of equations for x. Based on the options provided, determine which value of x satisfies both expressions for the lengths of WX and YZ. **Answer Explanation:** 1. Set the equations equal to each other, as the diagonals bisect each other in a parallelogram: (x + 4) = (2x - 7) 2. Solve for x: x + 4 = 2x - 7 4 + 7 = 2x - x 11 = x 3. Substitute x back into the expressions to find the lengths of the segments. This method provides the necessary steps to determine the correct length for CY based on the given options.
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