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Harlamova29_29 [7]
3 years ago
11

Select all radical expressions that are equivalent to 5 2/3

Mathematics
2 answers:
Alexandra [31]3 years ago
8 0

Answer:

1&3

Step-by-step explanation:

i just took the test

Dennis_Churaev [7]3 years ago
5 0

Answer:

1 and 3

Step-by-step explanation:

  1. (5^(1/3))^2 = 5^(2/3)
  2. (5^2)^(1/2) = 5^(2/2) = 5
  3. (5^2)^(1/3) = 5^(2/3)
  4. (5·3)^(1/2) = 5^(1/2)·3^(1/2)
  5. (5^(1/2))^3 = 5^(3/2)
  6. (5·2)^(1/3) = 5^(1/3)·2^(1/3)

___

Applicable rules are ...

\sqrt[n]{x^{m}}=x^{\frac{m}{n}}\\\\(x^{b})^{c}=x^{bc}\\\\(ab)^{c}=a^c\cdot b^c

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Perimeter of a square or a rectangle
Ira Lisetskai [31]

Answer:

perimeter of square = s+s+s+s

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= 60 ft

4 0
3 years ago
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g A researcher wants to construct a 95% confidence interval for the proportion of children aged 8-10 living in Atlanta who own a
Helga [31]

Answer:

The sample size needed is 2401.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error of the interval is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

Estimate the sample size needed if no estimate of p is available so that the confidence interval will have a margin of error of 0.02.

We have to find n, for which M = 0.02.

There is no estimate of p available, so we use \pi = 0.5

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.02 = 1.96\sqrt{\frac{0.5*0.5}{n}}

0.02\sqrt{n} = 1.96*0.5

\sqrt{n} = \frac{1.96*0.5}{0.02}

(\sqrt{n})^{2} = (\frac{1.96*0.5}{0.02})^{2}

n = 2401

The sample size needed is 2401.

7 0
3 years ago
Read 2 more answers
HELP ‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️WILL MARK BRAINLYEST‼️‼️‼️
Rainbow [258]

Answer:

8 one-dollar bills

3 five-dollar bills

2 ten-dollar bills

Step-by-step explanation:

Let x = # of one-dollar bills, y = # of five-dollar bills, and z = # of ten-dollar bills. Total amount in the wallet is $43, so the first equation would be 1x + 5y + 10z = 43. Next, there are 4 times as many one-dollar bills as ten-dollar bills, so x = 4z. There are 13 bills in total, so x + y + z = 13

x + 5y + 10z = 43

x = 4z

x + y + z = 13

x + 5y + 10z = 43

x + 0y - 4z = 0

x + y + z = 13

5y + 14z = 43

-y - 5z = -13

5y + 14z = 43

-5y - 25z = -65

-11z = -22

z = 2

x = 4z

x = 4*2 = 8

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10 + y = 13

y = 3

3 0
1 year ago
Equivalent fraction one over two
Bumek [7]
Two over four because you just multiply by two2/4
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3 years ago
Y=x^2-2<br> Input output<br> X Y <br> 1<br> 4<br> 8<br> 10
Nuetrik [128]

Answer:  -1, 14, 62, 98

<u>Step-by-step explanation:</u>

Plug each x-value into the equation and solve for y

\begin{array}{c|l||c}\underline{\quad x\quad}&\underline{x^2-2}&\underline{=\ y}\\1&1^2-2&=-1\\4&4^2-2&=14\\8&8^2-2&=62\\10&10^2-2&=98\end{array}

7 0
3 years ago
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