Answer:
the equation is not correct....
well, it should look sth. like (x+or- number)^2=number
 
        
             
        
        
        
Answer:
First option, relation 1 and relation 4
Step-by-step explanation:
Because they both cross one of the two axes once, which from what I remember, makes it a function.
Hope this makes sense, and please correct me if I'm wrong :)
 
        
             
        
        
        
Answer:
2
Step-by-step explanation:
In function notation, f(x) equals the y value and the x equals the x value. So this question is asking you to find the value of y when x=-2. To do this find -2 on the graph and find the point with the same x value, then find what value of y it is on. In this case, f(-2)=2.
 
        
             
        
        
        
Answer:
7.1 inches
Step-by-step explanation:
perimeter you go round from apointof your choice so 
add 2+2=4
then apply 1/4πd for the round part 
d=4 and it's quarter a circle then add them together
 
        
                    
             
        
        
        
Answer:
137°
Step-by-step explanation:
So, both are equal to each other due to them being the same degree angle.
5x+7=8x-71
subtract 5x on both sides
7=3x-71
add 71 to both sides
77=3x
divide both sides by 3
77/3=x
x equals about 26
insert x into the problems
[5(26)+7]°
this equals 137°
[8(26)-71]°
this equals 137°