5. George's science teacher has a mixture of table salt and iron filings. Which of the following would be the best way to separate the salt and the iron filings? A. use a magnet to pull the iron filings from the salt B. add food coloring to the mixture to make the salt change color C. pour them into a beaker of water and see if the iron filings float D. heat up the mixture to see if the salt or the iron filings will burn away Explanation:
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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