3x² + 9x - 54 :(3)
x² + 3x - 18
(x-3)*(x+6)
        
             
        
        
        
The volume of the solid objects are 612π in³ and  1566πcm³
<h3>Volume of solid object</h3>
The given objects are composite figures consisting of two shapes.
The volume of the blue figure is expressed as;
Volume = Volume of cylinder + volume of hemisphere
Volume = πr²h + 2/3πr³
Volume =  πr²(h + 2/3r)
Volume =  π(6)²(13+2/3(6))
Volume = 36π(13 + 4)
Volume = 612π in³
For the other object
Volume = Volume of cylinder + volume of cone
Volume = πr²h + 1/3πr²h
Volume =  π(9)²(15) + 1/3π(9)²(13)
Volume=  81π (15+13/3)
Volume= 1566πcm³
Hence the volume of the solid objects are 612π in³ and  1566πcm³
Learn more on volume of composite figures here: brainly.com/question/1205683
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Consider the attached ellipse. Let the sun be at the right focus. Then perihelion is at right vertex on the x-axis and aphelion is at the left vertex on the x-axis.
The distances:
- from perihelion to the sun in terms of ellipse is a-c;
- from aphelion to the sun in terms of ellipse is a+c.
Then 

Add these two equations:
 
 
and subtract first equation from the second:
 
 
Note that  thus
 thus

The equation for the planet's orbit is

 
        
             
        
        
        
Answer:
 What is the explicit formula for this sequence? -9, -3, 3, 9, 15, ... - did not match any news results.
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