You subtrscy the bigger number (2010's population) by the smaller one (1910's population). 237194-608660= 371,466. 
When you round to the 100's you check the 10's place. If 5 or higher add a 1 to the hundreds place, and make the 1's and 10's place 0. If lower don't add anything and make the 1's and 10's place into 0s.
When you round it, you will get 371,400
        
             
        
        
        
Day 1 and Day 3 his score add up to zero.
Day 2 and Day 4 his score add up to zero.
        
                    
             
        
        
        
<span>The product of any whole number factor multiplied by 100 will always have two zeros on the end, or a zero as the digit in both the tens and units column. For example, 1 x 100 is 100, 46 x 100 is 4600 and 7258 x 100 is 725,800.</span>
        
             
        
        
        
Answer:
Circumscribed circle: Around 80.95
Inscribed circle: Around 3.298
Step-by-step explanation:
Since C is a right angle, when the circle is circumscribed it will be an inscribed angle with a corresponding arc length of 2*90=180 degrees. This means that AB is the diameter of the circle. Since the cosine of an angle in a right triangle is equivalent to the length of the adjacent side divided by the length of the hypotenuse:

To find the area of the circumscribed circle:

To find the area of the inscribed circle, you need the length of AC, which you can find with the Pythagorean Theorem:

The area of the triangle is:

The semiperimeter of the triangle is:

The radius of the circle is therefore 
The area of the inscribed circle then is  .
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Hope this helps!
 
        
             
        
        
        
9514 1404 393
Answer:
   C. 12cm
Step-by-step explanation:
The equation for the perimeter of the rectangle is ...
   P = 2(L+W)
   34 = 2(n +m)
Solving for m, we get
   m = 17 -n . . . . . . . divide by 2, subtract n
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The Pythagorean theorem gives the relationship between the sides and the hypotenuse
   m^2 +n^2 = (n+1)^2
   (17 -n)^2 +n^2 = (n +1)^2 . . . . . . substitute for m
   289 -34n +n^2 +n^2 = n^2 +2n +1 . . . . eliminate parentheses
   n^2 -36n +288 = 0 . . . . . . . put in standard form
   (n -12)(n -24) = 0 . . . . . . . . . factor
   n = 12 . . . . . . . . . . n=24 is an extraneous solution here
The value of n is 12 cm.