Answer:
each time you go to the next number, it is always a different ending and has a different tens place number.
what i mean by the tens place is like for example 123, 2 is in the tens place.
Step-by-step explanation:
Count-by is simply the number added to a number to get the next number
The relationship between 9s count-bys and 10 count-bys is that, both represent arithmetic sequence.
An illustration of 9 and 10 count-by is:
9, 18, 27, 36......
10, 20, 30, 40......
In the 9 count-by, 9 is added to each number to get the next.
Similarly, in the 10 count-by, 10 is added to each number to get the next.
When a constant is added to a number to get another, the numbers are said to be in arithmetic sequence.
Hence, 9 and 10 count-bys are both arithmetic sequence.
Read more about count-bys at:
https://brainly.com/question/13550459
