SOLUTION: I need help with this question. I am having a hard time knowing even where to start... Suppose that an object is 100 pounds when it is at sea level. Find the value of C that make

Algebra ->  Radicals -> SOLUTION: I need help with this question. I am having a hard time knowing even where to start... Suppose that an object is 100 pounds when it is at sea level. Find the value of C that make      Log On


   

Question 163751: I need help with this question. I am having a hard time knowing even where to start...
Suppose that an object is 100 pounds when it is at sea level. Find the value of C that makes the equation w=Cr%5E-2 true. (Sea level is 3,963 miles from the center of the earth)
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Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Suppose that an object is 100 pounds when it is at sea level. Find the value of C that makes the equation w=Cr^-2 true. (Sea level is 3,963 miles from the center of the earth)
:
C%2Ar%5E-2 = w
Replace w with 100 and r = 3963
C+%2A+3963%5E-2 = 100
the reciprocal gets rid of the neg exponent
C%2F3963%5E2 = 100
C = 3963^2 * 100
:
C = 157053369 * 100
:
C = 15,705,336,900
:
:
Check this in a calc: enter: 15705336900 * 3963^-2 = 100