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PLEASE HELP ME!!!!!!!!!

PLEASE HELP ME class=

Sagot :

Answer:

w=9

Step-by-step explanation:

A negative exponent means that you take the reciprocal of the positive exponent.

For example, take 2^-2:

2^2 = 4. By the rule above,

2^-2 = 1/4.

According to a calculator, that's right.

Let's now take your question.

b^(-w) = 1/(b^9)

Because of the rule we just established, we know that

b^w = b^9 (taking the reciprocal, making the left-side exponent positive)

Since, if the bases are equal, the exponents are equal, the answer is:

w = 9