7 Question 1 8 Consider the following survey results with respect to 3 brands of breakfast cereal: 9 Preferred Male Female Total 10 102 78 180 11 B 120 42 162 12 50 20 70 13 Total 272 140 412 14 If prefernces were independent of gender how many males would you have expected to prefer BrandB? 1. Answer: 15
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.
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