The equation of the ellipse ( in the standard form ) :
x² / a² + y²/ b² = 1
a = 6,  b = 5  ( from a graph )
Answer: D ) x² / 36 + y² / 25 = 1
        
                    
             
        
        
        
Hey user!
your answer is here..
we know about EULER'S FORMULA, it is a formula used to verify a polyhedron or to calculate the number of faces, vertices or edges.
Euler's formula = F + V - E = 2
given :-
faces = 28, verticies = 50 and edge = ?
we know that F + V - E = 2
therefore 28 + 40 - E = 2
==> 68 - E = 2
==> - E = 2 - 68
==> - E = - 66
==> E = 66
hence, the number of edges of the polyhedron is 66.
cheers!!
        
                    
             
        
        
        
9514 1404 393
Answer:
   D)  Rhombus
Step-by-step explanation:
The figure is a parallelogram with equal-length sides, so is a rhombus.
 
        
             
        
        
        
Answer:
10/9
Step-by-step explanation:
So first you have to convert 5 to a fraction. 5/1 is equal to 5 so that means that 5/1 can work. 5/1x2/9=10/9 because all you have to do is multiply the numerator with the numerator and the denominator with the denominator. 
Hope this helps