Chapter 1: Ratios and Proportions Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What is a Ratio?

A

Expresses a relationship between two components.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How are Ratios written?

A

Using a colon between the two numbers (:) ( 2:1 is different from 1:2.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is a Proportion?

A

A equation which states that two ratios are equal.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How are Proportions typically set up like?

A

1:2=2:4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the middle numbers 1(:2)=(2):4 called?

A

Means.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the end or outside numbers (1):2=2(:4) called?

A

Extremes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How to determine whether proportions are equal?

A

Comparing the product (multiplication) of the means to the product of the extremes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the firs step when using the Proportion 1:2=2:4?

A

Multiply the means (2x2=4) and the extremes (1x4=4) the means and extremes are equal so the proportions are equal.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly