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3 years ago

Rewrite the expression in the form y^n

Mathematics

2 answers:

bazaltina [42]3 years ago

6 0

Answer:

$y^6$

Step-by-step explanation:

$\frac{a^b}{a^c} = a^{b - c}$

Using this rule we have:

$\frac{y^{-7}}{y^{-13}} = y^{-7 -(-13)} = y^6$

worty [1.4K]3 years ago

4 0

Answer:

$y^6$

Step-by-step explanation:

The applicable rules of exponents are ...

$y^ay^b=y^{a+b}\\\\\dfrac{1}{y^{-a}}=y^a$

Using these rules, you can write the expression as ...

$\dfrac{y^{-7}}{y^{-13}}=y^{-7-(-13)}=y^6$

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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kvasek [131]

Answer:

$n=\frac{0.5(1-0.5)}{(\frac{0.1}{1.96})^2}=96.04$

Then the minimum sample size in order to satisfy the condition of 0.1 for the margin of error is 97 and since the sample used is n =100 we can conclude that is sufficient and the best answer would be:

D. Yes.

Step-by-step explanation:

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The margin of error for the proportion interval is given by this:

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We want a margin of error of $ME =\pm 0.1$ and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}$ (b)

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D. Yes.

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