Respuesta :
Answer:
x = 3
JK = 13
KL = 13
JL = 26
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
- Left to Right
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality
Algebra I
- Terms/Coefficients
- Midpoints - separates a line segment into 2 equal partitions
Step-by-step explanation:
Step 1: Define
K is midpoint JL. Use midpoint definition.
JK = 2x + 7
KL = 4x + 1
JK = KL
2x + 7 = 4x + 1
Step 2: Solve for x
- [Subtraction Property of Equality] Subtract 2x on both sides: 7 = 2x + 1
- [Subtraction Property of Equality] Subtract 1 on both sides: 6 = 2x
- [Division Property of Equality] Divide 2 on both sides: 3 = x
- Rewrite/Rearrange: x = 3
Step 3: Find
JK
- Substitute in x: JK = 2(3) + 7
- Multiply: JK = 6 + 7
- Add: JK = 13
KL
- Substitute in x: KL = 4(3) + 1
- Multiply: KL = 12 + 1
- Add: KL = 13
JL
- Define: JL = JK + KL
- Substitute in variables: JL = 13 + 13
- Add: JK = 26