Because 9 times 9 equals 81.
It is: 9^2 = 81
2^9 = 512 9^2 = 81
9 to negative 2 = 1/9 to plus 2 = 1/81
9 to the 2 power is 81 9x9=81 When you are calculating powers you are really multiplying the first number by itself the number of times the second number says. so for 9 to the 2 power you are multiplying 9 by itself 2 times
Well, isn't that just a happy little math question! When you see "log base 81 of 9," you're looking for the power you need to raise 81 to get 9. Since 81 to the power of 1/2 equals 9, the answer is 1/2. Just a little mathematical magic to brighten your day!
It is: 9^2 = 81
81. (9 to the power of 2 = 9 x 9).
11
9 to the power of 2 = 81
2^9 = 512 9^2 = 81
You can express 81 as a power in several ways: ( 81 = 3^4 ) because ( 3 \times 3 \times 3 \times 3 = 81 ). ( 81 = 9^2 ) since ( 9 \times 9 = 81 ) and ( 9 ) can be rewritten as ( 3^2 ). ( 81 = (3^2)^2 ) which simplifies to ( 3^{2 \times 2} = 3^4 ). Thus, all representations confirm that ( 81 ) can be expressed as a power in different forms.
81
9^2 = 81 Which is the same as 9 * 9 = 81 For instance, if it was 9 to the power of 3: it would by 9 * 9 * 9 = 729 (could also be expressed as 9^3) (Note: x . * are three symbols meaning multiply.)
9 to negative 2 = 1/9 to plus 2 = 1/81
9 to the 2 power is 81 9x9=81 When you are calculating powers you are really multiplying the first number by itself the number of times the second number says. so for 9 to the 2 power you are multiplying 9 by itself 2 times
Well, isn't that just a happy little math question! When you see "log base 81 of 9," you're looking for the power you need to raise 81 to get 9. Since 81 to the power of 1/2 equals 9, the answer is 1/2. Just a little mathematical magic to brighten your day!
9-2 = 1/92 = 1/81