Radicand Divided by Another Radicand, A
Simplifying a radical expression by dividing the radical in the numerator by the radical in the denominator.
Ramona Family Case, The
Experimental psychologist and author Elizabeth Loftus talks about the case of the Ramona family, which was torn apart after daughter Holly went through therapy that led to her remembering alleged abuses which she claims ..
Rate, Time, and Distance Problem
To solve a distance problem, a diagram is drawn, an equation developed based on the essential information, the equation is solved, and the solution is checked.
Ratification Debate, The
Historian and author Bernard Bailyn talks about the importance of the ratification debate for the eventual success of the United States Constitution. "Once it was clear that there would be amendments to it that would car..
Ratio and Proportion: Defining Ratio and Proportion
This clip provides definitions and example of the words "ratio" and "proportion." The clip explains that we will be using the word ratio " as a way of describing the relative sizes of two numbers." The clip also says th..
Ratio and Proportion: Knowing Whether Two Fractions Are Equal
This clip explains that the way to find out whether two fractions are equal is to write them with a common denominator. If the numerators are equal, the fractions will be equal.
Ratio and Proportion: Practical Problem: French Toast, A
This clip presents a problem involving cooking ingredients needed to make French toast. As in other proportion problems, we are given three pieces of information and have to find the fourth. The problem is solved through..
Ratio and Proportion: Problem In Which The Denominator Is Missing, A
This clip explains that, whether it's a numerator or a denominator that's missing, in order to be sure that " we really have a proportion...the cross products must be equal."
Ratio and Proportion: Proportions In the Use of Map Scales
This clip presents a problem involving the scale on a road map comparing inches to miles. The clip explains that checking the answer to see that it makes sense is especially important in proportion problems, because " w..
Ratio and Proportion: Simplifying the Comparing of Fractions by Cross Multiplying
This clip explains that cross multiplying is a shortcut which allows us to determine if two fractions are the same. The fractions are compared by multiplying the numerator of each by the denominator of the other. If the ..