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What Is Pythagorean Theorem?Pythagorean Theorem is an equation discovered by a man named Pythagoras. It can be used to determine whether or not a triangle is a right triangle and find missing lengths ...
Look at the image below to learn all about the divisibility rules.Real Life ExamplesDivisibility rules can be used in everyday life. For example, if you're at a grocery store and you need to find whic ...
What Is Scale Factor?Scale factor is the ratio of the length of the scale drawing to the corresponding length of the original object.Solving ProblemsWe are told to find the scale factor when we are gi ...
Solving Equations with Fractions Using AdditionIn our first example, our equation is b - 11/10 = -13/5We need to find out what the variable, 'b', is. A variable is a symbol that stands for an unknown ...
What Is a Rational Number?A rational number is a number that can be written as a ratio and a/b.What Is an Irrational Number?An irrational number is a number that can't be written as a/b.Examples of Ra ...
What Is a Rate?A rate is a comparison of two quantities that have different units. An example is 90 miles/3 hours, which is read as 90 miles per 3 hours.What Is a Unit Rate?Unit rates are rates where ...
What Is Dimensional Analysis?Dimensional analysis is used to convert units. It's the process of analyzing units to decide which conversion factor to use. It's used by multiplying units by conversion f ...
The SolutionThe first step to solving proportions is cross multiplying. For example, we are told to solve the proportion 13/3 = x/9. We cross multiply 13 •9 and 3 • x. Remember, the equal sign does no ...
What Are Proportions?Proportions are 2 ratios that are equal.How Do We Check for Proportions?Checking for proportions is quite simple. All you need to do is cross multiply and if both are equal, then ...