Answer:
D
Step-by-step explanation:
diameter of 1 circle = 21.3/3= 7.1
radius of 1 circle= 7.1/3=3.55
area of 1 circle =πr^2=3.14× (3.55)^2=39.57
area of 3 circle= 39.57×3=118.72
therefore,area of shaded portion= area of 3 circle =118.72
 
        
             
        
        
        
We'll represent the distance as d and the time as t. 
d= 3(t+7)            because Gilda is 7 minutes late when travelling 3 mph
d= 4(t-5)             because Gilda is 5 minutes early at 4 mph
d= 3t + 21
d= 4t -20
3t +21 =4t -20
41=t
d= 3(41) +21= 144
The distance is 144 miles. 
        
                    
             
        
        
        
 Answer:
29 ; 37 
Step-by-step explanation:
The figure is composed by a square, a rectangle, and a right triangle 
The perimeter of the square is 6 units 
The perimeter of the rectangle is 10 units
The triangle is composed by a side of 6 units and a side of 5 units 
The third side can be find with the Pythagorean theorem 
 = 7,81025
 = 7,81025
The total perimeter is 
6 + 10 + 5 + 7,81025 = 28,81025 = 29 
Area of the square = 2^2 = 4 square units
Area of the rectangle = 6 x 3 = 18 square units 
Area of the triangle =  (5 x 6)/2 = 15 square units 
Total area = 4 + 18 + 15 = 37 square units 
 
        
                    
             
        
        
        
Answer:
5 times 2 + 7
Step-by-step explanation:
 
        
                    
             
        
        
        
It has a 6:1 ratio meaning for every 6 cups of apple juice there is 1 cup of lemon-lime soda