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3241004551 [841]
4 years ago
6

What is 4/5 of 2 1/6

Mathematics
1 answer:
Sophie [7]4 years ago
7 0

Answer:

the answer is

\frac{26}{15}

Step-by-step explanation:

⅘ of 2⅙ is basically the same thing as..

\frac{4}{5}  \times  2 \frac{1}{6}

to multiply the fractions first convert 2 ⅙ into a improper fraction.

multiply the whole number by the denominator and add the product to the numerator to get the NEW NUMERATOR

2 \times 6 = 12 \\ 12 + 1 = 13

but you keep the denominator, so now 2⅙ is..

\frac{13}{6}

Now simplify and then multiply.

<u>4 </u><u>×</u><u> </u><u>13</u> = <u>2</u><u> </u><u> </u><u> </u><u>×</u><u> </u><u> </u><u> </u><u>1</u><u>3</u>

5 × 6 5 × 3

\frac{2}{5}  \times  \frac{13}{3 }  =  \frac{26}{15}

26/15 or 1 11/15

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Solution:

If the <u>numerator</u> and the <u>denominator</u> have like bases in exponents, then the <u>exponents</u> subtract.

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Your teacher will report the mean and standard deviation of the sampling distribution created by the class.
sukhopar [10]

Answer:

\hat p = \frac{\sum_{i=1}^{40} \hat p_i}{40}

\hat p = 0.493

And the deviation is given by this formula:

s_{\hat p}= \frac{\sum_{i=1}^{40} (\hat p_i - \hat p)^2}{n-1}= 0.085

And as we can see the population proportion expected for the number of heads 0.5  is very close to the mean of the sampling distribution, the error is :

\% Error = \frac{0.5-0.493}{0.5}* 100 = 1.4\%

Step-by-step explanation:

Assuming the data on the figure attached. We ar assuming that this is a sampling distribution of sample proportions of heads in 40 flips of a coin.

As we can see we have the following values:

0.25, 0.35, 0.375,0.375, 0.40,0.40,0.40, 0.425,0.425,0.425, 0.45,0.45,0.45,0.45, 0.475,0.475,0.475, 0.475,0.475, 0.50,0.50,0.50, 0.525,0.525,0.525,0.525, 0.55,0.55,0.55,0.55,0.55, 0.575,0.575,0.575 0.575, 0.575, 0.60,0.60, 0.65,0.65

And we can calculate the sample proportion with the following formula:

\hat p = \frac{\sum_{i=1}^{40} \hat p_i}{40}

\hat p = 0.493

And the deviation is given by this formula:

s_{\hat p}= \frac{\sum_{i=1}^{40} (\hat p_i - \hat p)^2}{n-1}= 0.085

And as we can see the population proportion expected for the number of heads 0.5  is very close to the mean of the sampling distribution, the error is :

\% Error = \frac{0.5-0.493}{0.5}* 100 = 1.4\%

4 0
3 years ago
In simplest form, what is the quotient of 1 = ?​
Elenna [48]

Answer:

Do u mind reposting ur question-? I dont quite undersatnd what u're asking ;-;

Step-by-step explanation:

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3 years ago
In a restaurant 72 out of 108 tables are booths. What is the ratio of tables that are booths to the total number of tables.
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Answer:

The ratio of tables that are booths to the total number of tables = \frac{72}{108}

Step-by-step explanation:

The number of tables in a restaurant, p = 108

The number of table that are booths, q = 72

Then, the ratio of tables that are booths to the total numbers of tables = \frac{q}{p}

                                                                 = \frac{72}{108}

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3 years ago
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