7^-3
To evaluate 7^-3, you need to take the reciprocal of 7^3.
Reciprocal of a number is obtained by taking 1 and dividing it by that number.
So, the reciprocal of 7^3 is 1/(7^3) = 1/343.
Therefore, 7^-3 = 1/343.
To calculate 7 raised to the power of -3, you can use the formula:
a^(-n) = 1 / a^n
Applying this formula, we can rewrite 7^-3 as:
7^-3 = 1 / 7^3
Now, let's evaluate 7^3:
7^3 = 7 × 7 × 7 = 343
Therefore,
7^-3 = 1 / 343
So, 7 raised to the power of -3 is equal to 1 over 343.