can you show the method too thx!
2007-01-21 03:04:27 · 6 answers · asked by moresimms2 2 in Science & Mathematics ➔ Mathematics
Sai is almost right, but he missed the 2.
3²ª = 3ˉ³
2a = -3
a = -3/2
2007-01-21 03:11:36 · answer #1 · answered by Jim Burnell 6 · 0⤊ 1⤋
3²ª = 1/27 >>>> 3²ª = 27^(-1) >>>> 3²ª = 3^3^(-1) >>>> 3²ª = 3^(-3) >>>> 2a = (-3) >>>> a =(-3)/2
2007-01-21 11:13:53 · answer #2 · answered by Mostafa M 1 · 0⤊ 0⤋
the answer is -3/2 because to get a fraction as an ans. for an exponent the exponent must be a negative number once we know that all we do is look at the bottom of the fraction 27 and we know that the cubed root of 27 is 3 (3*3*3 = 27) so the left side of the equation has to be 3 to the power of negative three to turn the exponent 2 into negative three it must be multiplied by -3/2 so that is the value of a
2007-01-21 11:16:26 · answer #3 · answered by the wise one 3 · 0⤊ 0⤋
We know that 3^3 = 3*3*3 = 27, so 3^(-3) = 1/27
So 2a = -3, and this a = -3/2
2007-01-21 11:08:46 · answer #4 · answered by JasonM 7 · 1⤊ 2⤋
3^2a=1/27 -> 3^-3
3^2a=3^-3
2a=-3
a= -(3/2)
2007-01-21 11:21:07 · answer #5 · answered by rubydragon 2 · 0⤊ 0⤋
3^-1 = 1 / 3
THUS
3^ -3 = 1/3^3
= 1/27
a = -3
2007-01-21 11:09:18 · answer #6 · answered by SAI S 1 · 0⤊ 2⤋