2 years ago

7)

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STALIN [3.7K]

The answer is 8.33333333333333333...

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2 years ago

rewona [7]

Answer:

closest answer = 81

Step-by-step explanation:

81/27 = 3

81/30= 2.7

81/45 = 1.8

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2 years ago

Readme [11.4K]

The factors of 20 are 1,2,3,5,6,10,15, and 30
6+3=9.

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2 years ago

nevsk [136]

Answer: 3y + 10z - 13

Step-by-step explanation:

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2 years ago

larisa [96]

Negative exponents work the same as positive ones, except you have to consider the inverse of the base.

So, if for example $4^3 = 64$ , in the same fashion you have

$4^{-3} = \dfrac{1}{4^3} = \dfrac{1}{64}$

So, negative exponents lead to a fraction with numerator 1 and denominator the same expression, but with positive exponent.

So, in your case, let's work with the inner parenthesis first:

$6a^{-4}b^2 = 6 \dfrac{1}{a^4}b^2 = \dfrac{6b^2}{a^4}$

Now, if we want to raise this to the negative two, we have

$\left(\dfrac{6b^2}{a^4}\right)^{-2} = \dfrac{1}{\left(\frac{6b^2}{a^4}\right)^2}} = \dfrac{1}{\frac{36b^4}{a^8}} = \dfrac{a^8}{36b^4}$

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3 years ago