Answered

Westonci.ca is the premier destination for reliable answers to your questions, brought to you by a community of experts. Explore a wealth of knowledge from professionals across different disciplines on our comprehensive platform. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals.

Which of the following are exact numbers? (Check all that apply.)
1000 meters in one kilometer.
The diameter of a coin, 10.2756mm (millimeters)
A dozen eggs.
16 ounces in 1 pound.
The length of a pen, 12mm (millimeters)

Sagot :

whitneytr12

For the given options we found that the following are examples of exact numbers:

  • 1000 meters in one kilometer is an exact number
  • A dozen eggs is an exact number.
  • 16 ounces in 1 pound is an exact number.

To find which of the given examples are exact numbers, we need to recall its definition. In simple words, an exact number is a number that can be counted without uncertainties, usually is an integer one.

A number that is determined with uncertainties with a finite number of significant digits or thought an instrument is not an exact number (is a measured one).      

Now, let's evaluate each option.    

a) 1000 meters in one kilometer      

This is an exact number because we know for certain that in 1 kilometer there are 1000 meters. All the conversion of units like meters to kilometers, grams to kilograms are examples of exact numbers.  

b) The diameter of a coin, 10.2756 mm  

This is not an exact number, because the diameter found has a finite number of significant digits, which means that the measurement has an uncertainty in the final decimal position. Also, this diameter was found with an instrument.    

c) A dozen eggs

A dozen is a number that can be counted with certainty, so it is an exact number.  

d) 16 ounces in 1 pound

This is like example "a". Since we know for sure that in 1 pound we have 16 ounces, this is an exact number.

e) The length of a pen, 12 mm

Although the number 12 mm is an integer, this is not an exact number because this dimension was measured. We do not know for sure that the dimension of a pencil is 12 mm, we can not count it.      

                                                 

Find more about exact numbers here: https://brainly.com/question/14741425?referrer=searchResults            

I hope it helps you!  

We hope this was helpful. Please come back whenever you need more information or answers to your queries. We appreciate your time. Please come back anytime for the latest information and answers to your questions. Westonci.ca is here to provide the answers you seek. Return often for more expert solutions.