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Because 9 times 9 equals 81.

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13y ago

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Related Questions

What to the second power equals 81?

It is: 9^2 = 81


What is the value of 9 to the power of 2?

81. (9 to the power of 2 = 9 x 9).


What is 9 to the -2 power?

11


How do you write the number 81 as a power in math?

9 to the power of 2 = 81


What is 2 power of 9?

2^9 = 512 9^2 = 81


How do you write 81 as a power in three different ways?

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.


What is a Perfect square that is a power of 2 for 9?

81


What does 9 to the second power equal?

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.)


What is 9 to negative 2 power?

9 to negative 2 = 1/9 to plus 2 = 1/81


What is nine to the second power?

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


What is log base 81 9?

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!


What is 9 to the power of minus 2 expressed as a fraction?

9-2 = 1/92 = 1/81