Unit 3 Flashcard 1 Study Guide

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

Front

What is the ratio of students to teachers if there are 15 students for every 3 teachers?

Back

The simplified ratio of students to teachers is 5:1.

Front

How do you calculate the heart rate from a given time?

Back

Heart rate can be calculated by measuring the number of heartbeats in a specific time period, usually expressed in beats per minute.

Front

If Molly's heart rate at 4 minutes is 288, what does this indicate about her activity level?

Back

A heart rate of 288 beats per minute indicates a very high level of physical activity or exertion.

Front

What is the ratio of apples to oranges if there are 5 apples and 20 oranges?

Back

The ratio of apples to oranges is 1:4.

Front

How do you find the cost per unit in a transaction?

Back

To find the cost per unit, divide the total cost by the number of units purchased.

Front

If Tiffany pays $40 for 160 minutes of talk time, how many minutes does she get per dollar?

Back

Tiffany gets 4 minutes of talk time per dollar.

Front

What is the importance of understanding ratios in real-life applications?

Back

Understanding ratios helps in making comparisons, understanding proportions, and solving problems in various contexts such as finance, cooking, and statistics.

Front

How do you determine a ratio from a table of values?

Back

To determine a ratio from a table, identify the relevant values and express them as a fraction, then simplify if necessary.