Answer:
0.9675sq.cm
Step-by-step explanation:
Find a related diagram attached
Area of the shaded region = Area of rectangle - area of semicircle
Area of rectangle = 3cm * 1.5cm
Area of rectangle = 4.5sq.cm
Given
diameter of the semicircle = 3cm
area = πd²/8
Area of the semicircle = 3.14(3)²/8
Area of the semicircle = 3.5325sq.cm
Area of the shaded region = 4.5 - 3.5325
Area of the shaded region = 0.9675sq.cm
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Given


Required

Since the events are mutually exclusive, then:

So, we have:

Take LCM



 
        
             
        
        
        
X1 + x2  / 2 , y1 + y2 / 2
8 + x2 /2 = 6
So x  is 4
9 + y2 /2 = 6
So y is 3.
Answer is B ( 4, 3)
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Answer:
-1
Explanation:
Let the number be x.
Then the equation will be:
3(x+18) = 51
=> 3x + 54 = 51
=> 3x = 51 - 54
=> 3x = -3
=> x = -3/3
=> x = -1
So, the number you thought of is -1.
 
        
                    
             
        
        
        
Diagonals = n(n-3)/n where n is the number of sides
if a polygon have 10 sides 
= 10(10-3)/10
= 7
thus, the polygon have 7 diagonals.