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.
![3. If two polygons are similar, then the ratio of any two esond'lehgths in the polygons is equal to the scale
factor of the similar polygons.
4. If two polygons are similar, then the ratio of their perimeters is equal to the ratios of their corresponding
Sides
5. If two polygons are similar, then the ratio of their areas is equal to the Sauares of the ratios of their
corresponding Sde lengths
AXYZ ~ APQR. Find the indicated value.
6. p = 15, q= 21, r= 9, x= 20, and z = 12. Find y.
20
12
7. What is k, the scale factor for Exercise 6?
DEFG ~ PQRS. Find the indicated value.
8. The perimeter of PQRS is 60 inches, and the ratio of
E
eu ASH uods zi
3
the side lengths is -. Find the perimeter of DEFG.
5'](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F613cff36-f049-4d2c-8831-17b68f7c7b81%2F478ded89-7715-43ad-946a-59b9e3deae56%2Fw01hsx_processed.jpeg&w=3840&q=75)
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