Answer:
B: A 
He earns $90 in 3 weeks.
C
He shelves 90 books in 3 hours.
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation:
X=5 and 3
 
        
                    
             
        
        
        
The lengths of the sides of the triangle are 8, 8, 20
Explanation:
Given that the perimeter of an isosceles triangle is 36 inches.
The base of the triangle is  times longer than each of its legs.
 times longer than each of its legs.
We need to determine the lengths of the sides of the triangle.
<u>Lengths of the sides:</u>
Let x denote the lengths of the sides of the triangle.
The base of the triangle is given by

Perimeter of the isosceles triangle = Sum of the three sides of the triangle.
Thus, we have,



Thus, the length of the sides of the isosceles triangle is 8 inches.
Base of the triangle = 
Hence, the three sides of the isosceles triangle are 8, 8, 20
 
        
             
        
        
        
Good. I hope you get locked, most mainly banned. Nobody needs you, “FrIsK” 
 
        
             
        
        
        
Prime number- a number that has only two factors.