cfrancisco0315 cfrancisco0315
  • 01-10-2018
  • Mathematics
contestada

Evaluate 1/x^-2 for x = 7.
A. -49
B. 1/49
C. 49

Respuesta :

gamergirl1232
gamergirl1232 gamergirl1232
  • 01-10-2018
The answer to this question is c
Answer Link
JawaZo JawaZo
  • 01-10-2018

[tex]\frac{a}{{b}^{n} } = a \times {b}^{ - n} [/tex]
Using this formula, it will become:
[tex]1 \times {x}^{2} [/tex]
Which equals 1 x 7 x 7 which is 49...
Which means the answer is c..
Answer Link

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