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3 years ago

11

How much is 8 hundreds plus 3 tens

2 answers:

Vikentia [17]3 years ago

8 0

I guess its 830 hope this help

koban [17]3 years ago

5 0

830
hope this helps!!!

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Consider the following sets of sample data: A: $30,500, $27,500, $31,200, $24,000, $27,100, $28,600, $39,100, $36,900, $35,000,

Alecsey [184]

Answer:

$CV=0.2$ ---- dataset 1

$CV = 7.2$ --- dataset 2

Step-by-step explanation:

Given

$A: 30500, 27500, 31200, 24000, 27100,28600, 39100, 36900, 35000, 21400, 37900, 27900, 18700,$ $33100$

$B: 4.29, 4.88, 4.34, 4.17, 4.52, 4.80, 3.28, 3.79, 4.84, 4.77, 3.11$

Required

The coefficient of variation of each

<u>Dataset A</u>

Calculate the mean

$\mu = \frac{\sum x}{n}$

$\mu = \frac{30500+ 27500+31200+24000+ 27100+28600+ 39100+ 36900+ 35000+ 21400+ 37900+ 27900+ 18700+33100}{14}$ $\mu = \frac{418900}{14}$

$\mu = 29921.43$

Next, calculate the standard deviation using:

$\sigma = \sqrt{\frac{\sum(x - \mu)^2}{n}}$

So, we have:

$\sigma= \sqrt{\frac{(30500 - 29921.43)^2 +.................+ (18700- 29921.43)^2 + (33100- 29921.43)^2}{13}}$

$\sigma= \sqrt{\frac{487723571.42857}{14}}$

$\sigma= \sqrt{34837397.959184}$

$\sigma= 5902.32$

So, the coefficient of variation is:

$CV=\frac{\sigma}{\mu}$

$CV=\frac{5902.32}{29921.43}$

$CV=0.2$ --- approximated

<u>Dataset B</u>

Calculate the mean

$\mu = \frac{\sum x}{n}$

$\mu = \frac{4.29+ 4.88+ 4.34+ 4.17+ 4.52+ 4.80+ 3.28+ 3.79+ 4.84+ 4.77+ 3.11}{11}$

$\mu = \frac{46.79}{11}$

$\mu = 4.25$

Next, calculate the standard deviation using:

$\sigma = \sqrt{\frac{\sum(x - \mu)^2}{n}}$

$\sigma = \sqrt{\frac{(4.29 - 4.25)^2 + (4.88- 4.25)^2 +.........+ (3.11- 4.25)^2}{11}}$

$\sigma = \sqrt{\frac{3.859}{11}}$

$\sigma = \sqrt{0.35081818181}$

$\sigma = 0.593$

So, the coefficient of variation is:

$CV=\frac{\sigma}{\mu}$

$CV = \frac{4.25}{0.5903}$

$CV = 7.2$ -- approximated

3 0

3 years ago

Cindy set:<br> 2 groups of 10 buttons and 34 single buttons

vova2212 [387]

In all you have 54 buttons because if you add 10 plus 10 that equals 20 plus 34 and that gets 54 buttons in all

4 0

4 years ago

Find the slope given the table of values

serg [7]

Answer:

slope=4

Step-by-step explanation:

$m=\frac{change(y)}{change(x)}$

$m=\frac{-8-(-4)}{-5-(-4)}$

$m=\frac{-4}{-1}$

$m=4$

3 0

3 years ago

Please help me :) i would appreciate it

chubhunter [2.5K]

Answer:

D. 15

Step-by-step explanation:

Given the expression, 32 + 2n - 9, and a value of <em>n </em>= -4:

You can substitute the value of <em>n</em> into the given expression:

= 32 + 2n - 9

= 32 + 2(-4) - 9

= 32 - 8 - 9

= 15

Therefore, the correct answer is D. 15

Please mark my answers as the Brainliest if my explanations were helpful :)

4 0

3 years ago

Read 2 more answers

Please help me with solving worded quadratic equations

nikklg [1K]

Answer to question 2 is 4 and 8 because 4+8=12 and 4 squared is 16 and 8 squared is 64, 16+64=80, hope this helps.

3 0

3 years ago