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lilavasa [31]
3 years ago
7

What is the correct answer?

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
6 0

Answer:

4.5 or 4 1/2

Step-by-step explanation:

First, you multiply 3 * 3

Second, you divide 9 / 2 = 4.5

Lastly, have a beautiful day! :)

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Sveta_85 [38]
A solution to a division problem means it is the quotient. And it tells us the solution to the dividend and divisor.
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A random sample of 70 printers discovered that 25 of them were being used in small businesses. find the 95% limit for the popula
kvasek [131]

Answer:

The sample proportion of printers used in small business is:

\hat{p}=\frac{25}{70}=0.3571

The 95% confidence interval for the population proportion of printers that are used in small businesses is:

\hat{p} \pm z_{\frac{0.05}{2}} \sqrt{\frac{\hat{p}(1-\hat{p})}{n} }

Where:

z_{\frac{0.05}{2}}=1.96 is the critical value at 0.05 significance level

\therefore 0.3571 \pm 1.96 \sqrt{\frac{0.3571(1-0.3571)}{70} }

         0.3571 \pm 0.1122

         \left ( 0.3571 - 0.1122, 0.3571 + 0.1122 \right)

         \left(0.245,0.469 \right)

Therefore, the 95% confidence interval for the population proportion of printers that are used in small businesses is (0.245 , 0.469)



7 0
3 years ago
Question 3 please NO spam math grade 7
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Step-by-step explanation:

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Answer:

y + 42 \geqslant 150 \\ y \geqslant 150 - 42 \\ y \geqslant 108

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I’m stuck on this and I need help...
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Answer:

D

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The ratio of corresponding sides are equal, that is

\frac{4}{8} = \frac{y}{14}

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