Answer:
- Circumference = 69.14cm
- Area = 380.29cm²
Step-by-step explanation:
Circumference. 
Circumference of a circle is calculated by the formula:
= Pie * diameter
= π * diameter 
= 22/7 * 22
= 69.14 cm 
Area 
Area of circle:
= Pie * radius ²
Radius = diameter/2
= 22/2
= 11 cm 
Area = 22/7 * 11²
= 22/7 * 121
= 380.29 cm²
 
        
             
        
        
        
Radius equals: 4.51
hope this helps! ♥
        
             
        
        
        
Answer:
60% are girls
Step-by-step explanation:
80 x 1.5 = 120 which is the amount of girls
120 out of 200 is 12/20 or 3.5 which is 60%
 
        
             
        
        
        
we are given with the data of a parabola with vertex at (2, 2) and directrix at y  = 2.5. the formua should be ax^2 + b x + c = y because of the directrix. 
(x-h)^2 = 4a (y-k)
(x-2)^2 =4a (y-2) 
a is the equidistant distance from focus to vertex and from vertex to directrix that is equal to -0.5
then the  answer is 
(x-2)^2 =-0.5*4 (y-2) 
x2 - 4x + 4 = -2y +4
x2-4x+2y = 0
answer is C
 
        
             
        
        
        
The answer is:  " 27 " .
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3⁵ / 3² = 3⁽⁵⁻²⁾ = 3³ = 3 * 3 * 3 = 9 * 3 = 27 .
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-Edit -- Note the following property of exponents :  "quotient rule" of exponents:
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Given that "a" and "b" are positive integers; and that "x" is a real number greater than "zero"; 
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  If a <span>≥ b ,  then:
   x</span>ᵃ /xᵇ = x⁽ᵃ ⁻ ᵇ⁾ ;
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If a <span>< b , then:
</span>
xᵃ /xᵇ = x⁽ᵇ ⁻ ᵃ⁾
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