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AysviL [449]
3 years ago
13

3 1/2 · 2 2/3 = ? Plz Help 15 pts

Mathematics
1 answer:
Veronika [31]3 years ago
6 0

It equals 9.33

because 3 1/2 is 3.5 and 2 2/6 is 2.66 we multiply and get our answer

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Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99​% confidenc
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Answer: 18

Step-by-step explanation:

The formula to find the minimum sample size is given by :_

n=(\dfrac{z^*\cdot \sigma}{E})^2

, where \sigma = population standard deviation.

z*= critical z-value.

E= Margin of error.

Given : \sigma= 13

E= ± 8

We know that critical value corresponding to 99% confidence level = z*=2.576  [Using z-table]

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n=(\dfrac{(2.576)\cdot (13)}{8})^2

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4 0
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Answer:

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Step-by-step explanation:

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To solve by graphing, we graph both of the equations and find the point at which the lines intersect.

[Graph]

-> See attached

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

7 0
2 years ago
Today is sunday. Tom starts to read a book with 490 pages today. Sundays he reads 25 pages and on all other days he reads 4 page
mrs_skeptik [129]

Based on the information given, it can be noted that Tom will use 117 days to read the book.

How to solve a equation.

Based on the information given, we are informed that Tom starts to read a book with 490 pages today. Sundays he reads 25 pages and on all other days he reads 4 pages.

Let the number of days be represented by x. Therefore, the equation to solve the question will be:

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Learn more about equations on:

brainly.com/question/13763238

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Sonbull [250]

Answer:

295.2

Step-by-step explanation:

3 0
3 years ago
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