Question

-18(9)^-1/2

Evaluate

Answer 1

Answer: The answer should be -6

Explanation:

18(9^−1/2)

= −18(9^−1/2)

= (−18)(0.333333)

= −6

So, what you want to do is first solve 9^-1/2, it will come out to be about 0.333333

You are going to put 0.333333 in for 9^-12 and then multiply:

-18(9^-1/2) = (-18)(0.333333)

(-18)(0.333333) = -6

Answer 2

-6

Explanation:

using the rules of exponents

•
`a^(-m)` =
`(1)/(a^(m) )`

•
`a^{(1)/(2) }` =
`√(a)`

then

- 18 ×
`9^{-(1)/(2) }`

=- 18 ×
`\frac{1}{9^{(1)/(2) } }`

= - 18 ×
`(1)/(√(9) )`

= - 18 ×
`(1)/(3)`

= -6