Answer:
answer is 24.56cm
perimeter of half/semi circle =   r + 2r
 r + 2r
<em>one semi circle semi circles perimeter:  </em> <em>*2+2*2 =10.283cm, </em>
<em>*2+2*2 =10.283cm, </em>
<em>for two semi circles= 2*10.283 =20.566cm</em>
without the line below for two semi circle: 20.566-4-4=12.566 cm
both da side of rectangle is 6cm+6cm=12cm
now add the 12.566+12=24.56cm
 
        
                    
             
        
        
        
Answer:
1 ≤ n
Step-by-step explanation:
7−3n ≤ n+3
   +3n   +3n
7 ≤ 4n+3
-3       -3
4 ≤ 4n
divide by 4 on each side
1 ≤ n
 
        
             
        
        
        
Answer: y=0
Step-by-step explanation:
(i’m so sorry i don’t know how to explain it, i guesses but got it right.)
 
        
                    
             
        
        
        
A quadratic in vertex form can be represented as

a represents reflection over the x-axis, and a vertical stretch or compress 
- is reflection and a fraction (1/2) represents a compression.
-h represents a shift of that many units to the right (-2 shifts to the
 right  two units)
k represents a shift up or down (-2 is shifting down 2 units_
Reflected over the x-axis, Vertically compressed by a factor of 1/2, shifted 2 units to the right, and shifted 2 units down