That's the answer i hope i got it write!!
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Answer:
Reflect over y axis and go 7 units down.
Step-by-step explanation:
It will match the triangles.
 
        
             
        
        
        
Answer: The volume of the cone is 130 cubic centimeters. 
Step-by-step explanation:
We know that to find the volume of a cylinder you will use the formula 
V= 
 Where r is the radius and h is the height.
  Where r is the radius and h is the height. 
And to find the volume of a cone you will use the formula 
V= 
 *h /3
*h /3 
So if they have the same dimensions which is the height and the radius then we will just divide the  volume of the cylinder by 3 to find the volume of the cone. 
V = 390/3 
V =  130 cm^3
 
        
             
        
        
        
Answer:
sin²x = (1 - cos2x)/2 ⇒ proved down
Step-by-step explanation:
∵ sin²x = (sinx)(sinx) ⇒ add and subtract (cosx)(cosx)
(sinx)(sinx) + (cosx)(cosx) - (cosx)(cosx)
∵ (cosx)(cosx) - (sinx)(sinx) = cos(x + x) = cos2x
∴ - cos2x + cos²x = -cos2x + (1 - sin²x)
∴ 1 - cos2x - sin²x = (1 - cos2x)/2 ⇒ equality of the two sides
∴ (1 - cos2x) - 1/2(1 - cos2x) = sin²x 
∴ 1/2(1 - cos2x) = sin²x
∴ sin²x = (1 - cos2x)/2
 
        
             
        
        
        
A) there are 26 possible outcomes
B) 5/26 chances of picking a vowel
C) 21/26 chances of picking a consonant