Answer:
x=85 
Step-by-step explanation:
The angles are vertical angles, therefore they are congruent. This means we can set them equal to each other. 
x+5=90
Solve for x by isolating x. To do this, subtract 5 from both sides 
x+5-5=90-5
x=85 
So, x=85, and the second choice is correct. 
 
        
                    
             
        
        
        
Answer:
Additive inverse is  (7y² - x²y + 3xy + 7x²).
Step-by-step explanation:
Let the additive inverse of the given polynomial be Y.
Therefore as per definition of additive inverse of any polynomial the addition of a polynomial and additive inverse of any polynomial is always zero.
So Polynomial + additive inverse polynomial = 0
(-7y² + x²y - 3xy - 7x²) + Y = 0
Y = -(-7y² + x²y - 3xy - 7x²) = (7y² - x²y + 3xy + 7x²)
So the additive inverse of the polynomial will be (7y² - x²y + 3xy + 7x²).
 
        
             
        
        
        
Answer:
speed = (125×1000/2×60×60) m/s
 =125000/7200 m/s
 =17.36 m/s
 
        
                    
             
        
        
        
Answer:
yes i think
Step-by-step explanation:
 
        
             
        
        
        
The value of x is 77 cm which will make the triangles similar by SSS similarity theorem
Given length of the three sides of one triangle are  35 , 20 and 20
and length of the three sides of another triangle are  x, 44,44
We need to find the values of x by using SSS Similarity theorem
We know that triangles are are similar by side - side - side similarity creation and hence the sides are in the same ratio 
As both the triangles are isosceles triangles 
Therefore , 
x/35 = 44/20=44/20 (Using ratio)
Solving the equation we get 
x=44*35/20
x= 77
Hence the value of x is 77cm
Learn more about similarity of triangles here brainly.com/question/14285697
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