The required measure of the number line DB = 6.
GIven that,
A figure of number line shown, and a number has been marked on the number line A = 4, B = 7, C = 11, and D = 13
The measure of DB is to be determined.
What is a number line?
A number line is defined as the number marked on the line calibrated into an equal number of units. For example -1, 0, 1, and so on.
What is simplification?
The process in mathematics to operate and interpret the function to make the function simple or more understandable called simplifying and the process is called simplification.
since
On the given number line, marked from 4 to 13 or from A to D,
Total length AD = 9, which implies the line is distributed in 9 equal parts from 4 to 13.
Now measure of DB = AB - AD
= 13 - 7
= 6
Implies that there are equal parts of the line in DB.
Thus, The required measure of the number line DB = 6.
Learn more about number line here:
https://brainly.com/question/17683084
#SPJ2
