Answer:
   x = 10
Step-by-step explanation:
Use the Pythagorean theorem. The sum of the square of the sides is the square of the hypotenuse.
   x² +(√200)² = (√300)²
   x² = 300 -200
   x = √100 = 10
The length of the unknown side is 10 units.
 
        
             
        
        
        
Answer:
a1 = 6 and an = an-1 - 5
a2 = a2-1 - 5 = a1 - 5 = 1
a3 = a3-1 - 5 = a2 - 5 = -4, etc 
Step-by-step explanation:
 
        
             
        
        
        
<span>210 miles equals 1 and 1/2 inches (3 1/2"s or 0.5"). 1 and 1/2" is equal to two 3/4" (3/4 + 3/4 = 1 and 1/2). 1.5" is equal to 210 miles, and 1.5" is equal to 2 * .75", you can divide 210 miles by two, which gives you 105 miles.</span>
        
             
        
        
        
Answer:
it is not because a polynomial cannot have a negative power