I typed right on the problem set.
 
        
             
        
        
        
Multiply length times width to find the area. 6.5x11= 71.5
        
             
        
        
        
The value of 
 is 4.
By Geometry, we know that line segment 
, which is equivalent to:

 (1)
Now we solve algebraically the resulting expression.
If we know that 
, then we solve the equation for 
:



The value of 
 is 4.
We kindly invite to see this question on line segments: brainly.com/question/23297288
 
        
             
        
        
        
Given:
Total students = 60
Student passed = 85%
To find:
The number of students who failed and  then convert it in %.
Solution:
We have,
Number of passed student = 85% of Total students
                                             = 
                                             = 
So, number of passes students is 51.
Number of students who failed = Total students - Passes students
                                                     = 
                                                     = 
So, number of students who failed is 9.



Therefore, 15% students fail in the test.