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katovenus [111]
3 years ago
13

The diameter of circles is 4 cm. ​

Mathematics
1 answer:
krok68 [10]3 years ago
8 0

Answer:

Step-by-step explanation:

C=pi d, here d=4 so

C=pi X 4

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The Future Government Club wants to sponsor a panel discussion on the upcoming national election. The club wants four of its mem
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Simple random selection involves a selection where all the elements in the dataset have the same chance of being selected.

The selected names are:

<em>Engler, Motola, Redmond and Zenkel</em>

We have:

n =32 --- All names

r = 4 ---- Sample to select

There are several ways to select a sample of 4 using a simple random sample. Some ways are:

  • <em>Select any 4</em>
  • <em>List all names in even position and select the first 4</em>
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  • <em>List all names in odd position and select the first 4 that can be divided by 3</em>
  • <em>Etc</em>

<em />

Going by the third method, the selected positions are:

4, 8, 12, 16, 20, 24, 28 and 32

Select 4 positions that can be divided by 8

8, 16, 24 and 32

So, the selected names are:

<em>Engler, Motola, Redmond and Zenkel</em>

Read more about random selection at:

brainly.com/question/20692763

4 0
3 years ago
The weights of a small box of healthy oats are normally distributed with a mean of 8.9 oz and a standard deviation of 0.1 oz. Fi
s2008m [1.1K]

Answer:

) Compute the sample mean x and the sample standard deviation s.

Do NOT use a computer. You may only use +, –, ×, ÷, and on a calculator.

Show ALL work.

9

143.1

9

15.5 16.2 16.1 15.8 15.6 16.0 15.8 15.9 16.2 = = = ∑ + + + + + + + +

n

x

x

i

= 15.9.

x x 2 x x − x ( ) 2

x − x

15.5

16.2

16.1

15.8

15.6

16.0

15.8

15.9

16.2

240.25

262.44

259.21

249.64

243.36

256.00

249.64

252.81

262.44

OR

15.5

16.2

Step-by-step explanation:

8 0
3 years ago
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Need help on #12 and # 13 please and thank you
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5 0
3 years ago
Find the two-digit number which is 2 times the sum of its digits. Find a statement and number, please.
poizon [28]
A two-digit number is twice the sum of its digit. If the tens digit is 7 less than the unit digit, find the number. 
Let x= the unit digit
Then y= the tens digit
<span>And 10y+x= the number 


</span>x+y= the sum of the digits 
<span>Now we are told that 10y+x=2(x+y) ------1st equation </span>
<span>We are also told that y=x-7 ----------- 2nd Equation </span>
<span>So our equations to solve are: </span>
(1) 10y+x=2(x+y)
<span>(2) y=x-7 
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Hope it helps
5 0
4 years ago
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The length of a pool table is 71 feet and the width is 36 feet. Find the area of the surface of the pool table by multiplying th
Zarrin [17]

Answer:

2556 feet squared

Step-by-step explanation:

Area is calculated by multiplying length times width. 71x36=2556

5 0
3 years ago
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