Answer: 12
Step-by-step explanation:
 
        
             
        
        
        
Answer:
58 students
Step-by-step explanation:
Given






Required
Students that take only 1 subjects
The attached image illustrates the question.
For French only (x), we have:


Collect like terms


For Geometry only (y), we have:


Collect like terms


For History only (z), we have:


Collect like terms


Students with one subject is then calculated as:



 
        
             
        
        
        
Answer:
0-1 = -1
Step-by-step explanation:
if m equals 0 the answer is -1
 
        
             
        
        
        
Answer:
6
Step-by-step explanation:
JM is 6 riiite
and JMN should be an equilateral triangle so
 
        
             
        
        
        
We know that
if <span>QT is an altitude of triangle QRS
then
</span><span>the measure of angle QTS is equal to 90</span>°
so
6x+36=90-----> 6x=90-36----> x=54/6
x=9
QR=2x-5-----> QR=2*9-5-----> QR=18-5-----> QR=13
the answer is
QR=13