Answer:
i feel like you need 76 from the 87 
Step-by-step explanation:
 
        
                    
             
        
        
        
the length of the side of this square is  cm
cm
Answer:
Solutions Given:
let diagonal of square be AC: 8 cm
let each side be a.
As diagonal bisect square.
let it forms right angled triangle ABC .
Where diagonal AC is hypotenuse and a is their opposite side and base.
By using Pythagoras law
hypotenuse ²=opposite side²+base side²
8²=a²+a²
64=2a²
a²=
a²=32
doing square root on both side

a=±
a=±2*2
Since side of square is always positive so
a=4 or 5.65 cm
 or 5.65 cm
 
        
                    
             
        
        
        
3(5)+(-2+4(5))
15+(-2+20)
15+(18)
15+18
=33
        
             
        
        
        
Answer:
a)   x₁ = 14
      x₂ = - 6
b) x = 4
c) P(max ) = 4000000 $
Step-by-step explanation:
To find the axis of symmetry we solve the equation
a) -4x² + 32x + 336 = 0
4x²  - 32x  - 336  = 0       or    x² - 8x - 84 = 0
x₁,₂ = [ -b ± √b² -4ac ]/2a
x₁,₂ = [ 8  ±√(64) + 336 ]/2
x₁,₂ = [ 8  ± √400 ]/2
x₁,₂ =( 8 ± 20 )/2
x₁  = 14
x₂ = -6
a) Axis of symmetry must go through the middle point between the roots
x = 4 is the axis of symmetry
c) P = -4x² + 32x + 336
Taking derivatives on both sides of the equation we get
P´(x) = - 8x + 32  ⇒  P´(x) = 0     - 8x + 32
x = 32/8
x = 4    Company has to sell  4 ( 4000 snowboard)
to get  a profit :
P = - 4*(4)² + 32*(4) + 336
P(max) = -64  + 128 + 336
P(max) = 400           or  400* 10000 =  4000000
       
 
        
             
        
        
        
When you've got a squares bracket, this simply becomes the bracket twice, therefore, (r+s)2 becomes (r+s)(r+s)
You've then go to use FOIL, and this gives you r^2+rs+sr+s^2, and this cannot be simplified any further.
Therefore, the product of this is r^2 + s^2 + rs + sr
Hope this is what you're looking for :)