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makkiz [27]
3 years ago
11

How much is 8 hundreds plus 3 tens

Mathematics
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
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