Which context describes a difference of rational numbers?(1 point)
Responses
recording the temperature hourly
determining the coldest temperature in a month
comparing the daily high temperature and low temperature***
finding the average of daily high temperatures
The correct answer is −17°C. Since it is 13° colder than −4°C, we subtract 13 from −4°C to get −17°C.
Yes, you are correct. The context that describes a difference of rational numbers is comparing the daily high temperature and low temperature.
Which scenario about books represents finding the difference?(1 point)
Responses
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 location of a book in a store
finding the type of books in a store
The scenario that represents finding the difference in the context of books is 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***
17°C
9°C
−9°C
The context that describes a difference of rational numbers is comparing the daily high temperature and low temperature.
To determine which context describes a difference of rational numbers, we need to understand what rational numbers are. Rational numbers are numbers that can be expressed as a fraction of two integers, where the denominator is not zero. Examples of rational numbers include 2/3, -1/4, 7/5, etc.
Out of the given responses, comparing the daily high temperature and low temperature is the context that describes a difference of rational numbers. This is because the difference between two temperatures can be expressed as a rational number. For example, if the high temperature is 80 degrees and the low temperature is 60 degrees, the difference is 20 degrees, which can be expressed as the rational number 20/1. Therefore, comparing the daily high temperature and low temperature is the context that involves the difference of rational numbers.