Answer:
He used 5 47 cent stamps and 8 7 cent stamps
subtract 0.47 from 2.91 until you get 0.56 then you begin to subtract 0.07 to get 0.
The middle number is 16.95
<h3>What is Number system?</h3>
The collection of numbers is called the number system. These numbers are of different types such as natural numbers, whole numbers, integers, rational numbers and irrational numbers.
Given:
Numbers are 12.7 and 21.2
Difference between number
= 21.2-12.7
=8.5
middle number
= 12.7+ 8.5/2
= 12.7+ 4.25
= 16.95
Hence, the middle number is 16.95.
Learn more about this middle number here:
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Answer:
48
Step-by-step explanation:
89 - 41 = 48
they have to add up to 89
