Answer:
20
Step-by-step explanation:
Hope this helps! Have a great day ahead. Tell me if im wrong :)
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
2 * 2 = 4u² (area of the central square)
2 * 2 : 2 = 2u² (area of one congruent triangle)
 4 + 2 + 2 = 8u²
(u = units)
 
        
                    
             
        
        
        
Answer: Yes, the answer is 40 quarters.
Step-by-step explanation:
 1. You need to remember that 4 quarters make a dollar.
 2. Keeping this on mind, you can make a Rule of three, as following: If there are 4 quarters in 1 dollar, how many quarters are in 10 dollars? 
 Then:
 4 quarters-------1 dollar
            ---10 dollars
---10 dollars
 
 3. Therefore, there are 40 quarters in one roll.
 
 
 
        
             
        
        
        
Step-by-step explanation:
It is an isosceles triangle , it has two equal angles both 55°.
All Isosceles triangles have two equal angles <em>a</em><em>n</em><em>d</em> two equal sides. 
So in this case x +18 is equal to 3x, and to find x you will equal them to each other to create a linear equation and solve. 
 
x + 18 = 3x
x - 3x = -18 
-2x = -18
× = -18 / -2 
× = 9 <em>(</em><em>a</em><em>n</em><em>s</em><em>)</em><em> </em>
Hope I was able to help. Good Luck :)))
 
        
             
        
        
        
Rate is given by:
rate=(distance )/(time)
Martin's rate will be:
(3 1/3)/(1/6)
=(10/3)/(1/6)
=20 meters per hour
Alexia's rate is:
(17 1/2)/(5/6)
=(35/2)/(5/6)
=21 meters per hour