2007-10-24 10:13:57 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
9^(-2) = 1 / 9 ² = 1 / 81
2007-10-24 20:12:27 · answer #1 · answered by Como 7 · 0⤊ 0⤋
Instead of tell you the answer, lets see how you could find it yourself.
By canceling any common factors what answer would you get for
9^2 / 9^4 = (9 x 9) / (9 x 9 x 9 x 9) = ?
Now you must know the exponent law that says
x^a / x^b = x^(a-b)
So what do you get using this law on
9^2 / 9^4 = ?
Compare your two answers. What do you conclude?
2007-10-24 17:20:23 · answer #2 · answered by baja_tom 4 · 0⤊ 0⤋
9^-2 = 1/9^2 = 1/81
2007-10-24 17:16:42 · answer #3 · answered by ironduke8159 7 · 0⤊ 0⤋
9 ^ (-2)
= 1/9^2
= 1/81
2007-10-24 17:17:11 · answer #4 · answered by J D 5 · 0⤊ 0⤋
1/81
2007-10-24 17:34:26 · answer #5 · answered by Kevin R 2 · 0⤊ 0⤋
1/81.
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2007-10-24 17:16:49 · answer #6 · answered by Newbody 4 · 0⤊ 0⤋
.012345679
2007-10-24 17:31:33 · answer #7 · answered by marcos_chavez@att.net 1 · 0⤊ 0⤋