Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
![**Problem 9:**
**Given:**
- ∠5 and ∠16 are supplementary
- ∠2 ≅ ∠18
**Prove:**
- \( q \parallel r \)
**Activity:**
Fill in the proof table with statements and reasons.
**Diagram Explanation:**
The diagram shows a set of parallel lines intersected by transversals, creating multiple angles. The lines are labeled as follows:
- \( p \), \( q \), \( r \), and \( s \) encompass the main lines with \( q \) and \( r \) being the focus to prove parallel.
- \( t \) is below line \( r \), and line \( s \) is parallel to \( t \).
The angles are numbered from 1 to 24, positioned in order to represent various angle relationships resulting from the intersection of these lines and transversals.
**Proof Table:**
| Statements | Reasons |
|------------|---------|
| | |
| | |
| | |](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc59bc132-125b-41db-a224-fac355480052%2F3633b60b-c6a1-43f7-8fd6-382a45bbb389%2Ffd742w_processed.jpeg&w=3840&q=75)
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