8.1 And 8.2 Flashcards
0
Q
Proportion
A
An equation that equates two ratios
1
Q
Ratio
A
If a and b are two quantaies that are measured in the same units, than the ratio of a to b is a/b. The ratio can also be a:b.
2
Q
Properties of proportions
1. The product of the means =
A
The product of the extremes
If a/b = c/d then ad=bc
Cross product property
3
Q
Properties of proportions
2. If two ratios are equal, then
A
Their recripicals are also equal
If a/b = c/d than b/a = d/c
Recripical property
4
Q
If a/b =c/d than a/c = b/a
A
Interchange means property
5
Q
A/b = c/d iff a+b/b = c+d/d
A
No name
