Which context describes a difference of rational numbers?(1 point)
Responses
comparing the daily high temperature and low temperature
comparing the daily high temperature and low temperature
recording the temperature hourly
recording the temperature hourly
determining the coldest temperature in a month
determining the coldest temperature in a month
finding the average of daily high temperatures
finding the average of daily high temperatures
Which scenario about books represents finding the difference?(1 point)
Responses
finding the location of a book in a store
finding the location of a book in a store
finding the type of books in a store
finding the type of books in a store
finding the number of books remaining after a sale on books
finding the number of books remaining after a sale on books
finding the total number of books in a store when new books arrive
finding the number of books remaining after a sale on books
The temperature on Monday is −4°C. On Tuesday, it is 13° colder. What is the temperature on Tuesday?(1 point)
Responses
−17°C
negative 17 degrees upper C
9°C
9 degrees upper C
−9°C
negative 9 degrees upper C
17°C
17 degrees upper C
The temperature on Tuesday is −17°C.
Ping dove off a 10 meter platform. He reached a depth of 6 meters in the water. What was the change in height?(1 point)
Responses
64 meters
64 meters
16 meters
16 meters
4 meters
4 meters
60 meters
The change in height is 4 meters.
A parasail is 120 of a meter above the water. Then, after 10 minutes, the parasail is 150 of a meter above the water. What is the change in height?(1 point)
Responses
3/100 meter
Start Fraction 3 over 100 End Fraction meter
1/50 meter
Start Fraction 1 over 50 End Fraction meter
1/20 meter
Start Fraction 1 over 20 End Fraction meter
7/100 meter
The change in height is 1/20 meter.
The context that describes a difference of rational numbers is: finding the average of daily high temperatures.
To understand why this is the correct answer, let's first define what rational numbers are. Rational numbers are numbers that can be expressed as a fraction or a ratio of two integers, where the denominator is not zero. For example, 1/2, -3/4, and 5/1 are all rational numbers.
In the given responses, comparing the daily high temperature and low temperature does not involve calculating the difference between rational numbers. Instead, it involves comparing two different values without calculating any differences.
Recording the temperature hourly involves keeping track of temperature data, but it doesn't necessarily involve calculating the difference between rational numbers.
Determining the coldest temperature in a month might involve comparing temperatures, but it does not specifically ask for calculating the difference between rational numbers. It is more focused on finding the extreme value.
On the other hand, finding the average of daily high temperatures requires calculating the sum of the daily high temperatures and dividing it by the number of days. This calculation involves finding the difference between rational numbers and ultimately determining an average value.
Therefore, the context that best describes a difference of rational numbers is finding the average of daily high temperatures.