8.1/8.2 Flashcards
1
Q
Ratio
A
If a and b are two quantities that are measured in the same units, then the ratio of a to b is a:b or a/b
2
Q
Proportions
A
An equation that equates two ratios (w/x = y/z)
3
Q
Cross Product Property
A
The product of the extremes equals the product of the means
4
Q
Reciprocal Property
A
If two ratios are equal, then their reciprocals are equal. If a/b = c/d, then b/a = d/c
5
Q
Interchange Means Property
A
If a/b = c/d, then a/c = b/d
6
Q
Plus One Property
A
a/b = c/d if and only if a+b/b = c+d/d
7
Q
Geometric Mean
A
The geometric mean of two numbers, a and b, is the positive number x, such that a/x = x/b
