In the number 28, when 8 is underlined:
8 has the value of simply 8, because it is in the ones place.
Another example would be the 2 in the 8. If the 2 was underlined, because it is in the tens place, the underlined value will be 20
hope this helps
5777666979797997797979797 79797 777 797979797 777 77 7777 7
A stem and leaf plot is a table where each of the data is divided into two parts. The stem, that is the first digit and the leaf is the last digits. Let's say that we have the following set of data.

If we want to make a stem and leaf plot of that data, we first write a column where we place the first digit of each number without repetition, like this:

These are the stems. Now the leaves are the last digit of each number put in order next to the corresponding first digit, like this:
Answer:
2.3lego
Step-by-step explanation:
We can walk through this problem using the cross multiplication method
First 3 1/2 lego is same as 3.5lego
Hence If
Johnny builds 3.5lego in 60min
He can build xlego in 40min
Crosss multiplying we have
Xlego *60= 3.5*40
Xlego= 140/60= 2.3lego