Lesson 1-6.4cd Ratios

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 of the ratio by their greatest common divisor (GCD).

Front

What is the ratio of blue paint to yellow paint if 5 gallons of blue paint is mixed with 9 gallons of yellow paint?

Back

The ratio of blue paint to yellow paint is 5:9.

Front

If a housepainter mixes 30 gallons of blue paint with 54 gallons of yellow paint, what is the simplified ratio?

Back

The simplified ratio is 5:9.

Front

What does it mean if a ratio is expressed as 'none of these'?

Back

It means that none of the provided options accurately represent the relationship described in the question.

Front

How do you calculate the rate of speed?

Back

Speed is calculated by dividing the distance traveled by the time taken (Speed = Distance/Time).

Front

What is the speed of a baseball that traveled 330 feet in 5 seconds?

Back

The speed is 66 feet per second.

Front

What is a rate in mathematical terms?

Back

A rate is a specific kind of ratio that compares two quantities with different units.

Front

How do you find the population density of a county?

Back

Population density is found by dividing the population by the area (Population Density = Population/Area).

Front

What is the population density of a county with 9,350 residents and an area of 425 square miles?

Back

The population density is 22 residents per square mile.