Answer:
y = 10
Step-by-step explanation:
2y - 5 = 15
make y the subject of the formula
2y = 15 + 5
2y = 20
y = 20/2
y = 10
 
        
             
        
        
        
Step-by-step explanation:
circle has an area of 500 inches if we multiply it by 3 we get 1500 inches
  
        
             
        
        
        
Answer:
<h2>7.25</h2>
Step-by-step explanation:
 I gave you the answer earlier too!
for more info !
<h2>there s a theorem called MIDPOINT THEOREM </h2>
Which means the 3rd side of the triangle is equal to 1/2 of the line drawn by joining the mid points 
<h2>so AB=1/2of YZ</h2>
which means 
2x-4 = 1/2×21
thus, 2(2x-4) =21
=> 4x-8 = 21
4x = 29 
<h2>x= 29/4 = 7.25</h2>
 
        
             
        
        
        
Answer:
38 
Step-by-step explanation:
Given that,
x = -4
f(x)=x² - 4x +6
so,
f(-4)= (-4)² - 4 . (-4) +6
        =16 +16 +6
         = 38