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zvonat [6]
3 years ago
12

What is the value of the expression 3^−4 ?

Mathematics
2 answers:
ikadub [295]3 years ago
4 0
3^-4 = 1/3^4 = 1/81

hope it helps!
lisabon 2012 [21]3 years ago
4 0
Thanks for the question!

When there is a negative exponent, do the problem the same, but make it it’s reciprocal:

3^-4
1/3^4
1/81

Hope this helped!
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less than

Step-by-step explanation:

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If n is an integer, which conjecture is not true about 2n– 1? A. 2n– 1 is odd if n is positive. B. 2n– 1 is always even. C. 2n–
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B.



Let's simply look at each conjecture and determine if it's true or false.



A. 2n– 1 is odd if n is positive: Since n is an integer, 2n will always be even. And an even number minus 1 is always odd. Doesn't matter if n is positive or not. So this conjecture is true.



B. 2n– 1 is always even: Once again, 2n will always be even. So 2n-1 will always be odd. This conjecture is false.



C. 2n– 1 is odd if n is even: 2n is always even, so 2n-1 will always be odd, regardless of what n is. So this conjecture is true.



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Of the 4 conjectures above, only conjecture B is false. So the answer is B.
6 0
3 years ago
Based on the survey results from 300 selected students in the Burbank School District (BSD), the 98% confidence interval used to
Pavlova-9 [17]

Answer:

follows are the solution to this question:

Step-by-step explanation:

Please find the correct question in the attached file:

The formula for calculating the Confidence interval of proportion:

\to CI=\hat{p} \pm Z_{\frac{\alpha}{2}} \sqrt{\frac{\hat{p}(1-\hat{p})}{n}}\\\\\to  \hat{p}=\frac{\text{lower limit +upper limit}}{2}\\

      =\frac{0.48+0.60}{2}\\\\=\frac{1.08}{2}\\\\=0.54

The number of learners with access to working at home on a computer:

= 0.54 \times 300 \\\\=162

Lower limit =0.48

upper limit = 0.60

\to margin \ error = \frac{\text{upper limit - lower limit}}{2}\\

                          =\frac{0.60-0.48}{2}\\\\=\frac{0.12}{2}\\\\= 0.06

5 0
3 years ago
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