ovoxoclovd
ovoxoclovd ovoxoclovd
  • 31-07-2016
  • Mathematics
contestada

PLEASE HELP:
The power g^-2 is equivalent to 1/g^2 What is the value of g^-2?
A. -81
B. -9
C. 1/81
D. 1/9

Respuesta :

olemakpadu
olemakpadu olemakpadu
  • 31-07-2016
g⁻² = 1/g² =  1 / (g * g)

Since  g is multiplying g, hence the answer can not be negative. It can only be positive.

Because a negative * negative = positive  and

positive * positive  = positive.

The possible answer is option C or D.

if g = 3, 

g⁻² = 1/g² =  1 / (g * g)

3⁻² = 1/3² =  1 / (3 * 3) = 1/9

if g = 9

9⁻² = 1/9² =  1 / (9 * 9) = 1/81

Possible answer is C or D. 
Answer Link

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