anonymous
  • anonymous
What is the value of the expression 7 of the power –3? –21 -1/343 1/343 343
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
First one since I'm guessing the question was 7 x -3
anonymous
  • anonymous
oo editted ok =1/7^3 =1/343
Jamierox4ev3r
  • Jamierox4ev3r
think of \(7^{3}\) then think of \(7^{-1}\) \(\large 7^{3}=343\) \(\large 7^{-1}=\frac{1}{7}\)

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Jamierox4ev3r
  • Jamierox4ev3r
a negative exponent switches the numerator and the denominator For example, if \(7^{-1}\) is equal to \(\large\frac{1}{7}\), this means that \(7^{1}\) was equal to \(\large\frac{7}{1}\), which is also 7.
Jamierox4ev3r
  • Jamierox4ev3r
so if \(7^{3}\) is equal to \(\large\frac{343}{1}\), then \(7^{-3}\) is equal to? @cakequeen_22

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