Question

2. Evaluate b^-3for b = 3.
•27
•1/9
•1/27
•-27

Answer 1

If you mean 27/3 , then the answer is 3.

In fact, rational exponents work like this:

a b/c=Cxa^b

So, in your case,

27 1/3=3x27=3

because

3^3=27

Answer 2

`\underline{ \boxed{ (1)/(27) }}`

Explanation:

`given \to \: b^(-3) \: \\ if \: b = 3. \to \\ 3^(-3) = \frac{1}{3 {}^(3) } = \underline{ \boxed{ (1)/(27) }}`

♨Rage♨