Answer:
9) x = 5
10) x = 4
Step-by-step explanation:
a^2 + b^2 = c^2
9) 6^2 + x^2 = 8^2
   - 36 + x^2 = 64
   -  36            - 36
_______________
            x^2 = 28
Square root them
Squareroot x^2 is x
Square root 28 is 5.29 round is 5
so x = 5
*Correct me if im wrong*
10) 3^2 + x^2 = 5^2
      9 + x^2 = 25
   -  9              - 9
____________________
              x^2= 16 
Square root them
square root of x ^2 is x and square root of 16 is 4
so x = 4
 
        
             
        
        
        
Answer: 83
Step-by-step explanation:
(88+92+87+x)/4 = 90
(277+x)/4 = 90
x+ 277 = 360
x = 83
 
        
                    
             
        
        
        
Answer:
f(0) = g(0)
Step-by-step explanations
if a function h(x) passes through [a,b] then it can be said that h(a)=b.
given that, g(x) passes through (-2,0) and (0,4)
so, g(-2)=0, g(0)=4.
f(x) passes through (0,4) and (2,0)
so, f(2)=0, f(0)=4.
therefore, f(0)=g(0)=4.
so, first option is correct.
 
        
                    
             
        
        
        
Multiply all the terms by the same value to eliminate fraction denominators
a/9=-4
9 . a/9=9(-4)
The dot means multiplication 
Then simplify to simplify cancel the multiplied terms that are in the denominator 
a=9 . -4
Multiply the number 
9 . -4 =36 
And don’t forget to add the negative sign so the answer is 
a= -36
        
             
        
        
        
Answer:
52
Step-by-step explanation:
for every 4 pencils there is 1 eraser.  4/1=208/x
4x=208
x=52