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Tamiku [17]
4 years ago
6

It was recently estimated that homes without children outnumber homes with children by about eight to seven. If there are 3870

Mathematics
1 answer:
Lesechka [4]4 years ago
7 0
First you wanna add the proportions (8+7)
Then divide 3870 by 15. Which is from the 8+7
Then you times this number by 8, (258*8)
Then thats your answer (2064)
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And a survey of 500 households 23% say that they have a dog as a pet the standard deviation is 2% determine an interval that if
hammer [34]

Answer:

(114.123, 115.877)

Step-by-step explanation:

Given that :

Sample size (n) = 500

Mean = 23% of 500 = 115

Standard deviation (s) = 2% of 500 = 10

α = 95%

Zcritical at 95% = 1.96

Confidence interval = Mean ± Error

Error = Zcritical * standard deviation /sqrt (n)

Error = 1.96 * 10/sqrt(500)

Error = 0.8765386

Lower boundary : 115 - 0.8765386 = 114.1234614

Upper boundary : 115 + 0.8765386 = 115.8765386

(114.123, 115.877)

6 0
3 years ago
I NEED HELP ASAPPP!!!! It’s urgentttttt!!!!
Akimi4 [234]

Answer: (x - 2)² + (y - 14)² = 1

Step-by-step explanation:

<u>Concept:</u>

Here, we need to know the idea of the circle formula.

Circle formula: (x - h)² + (y - k)² = r²

Center = (h, k)

Radius = r

If you are still confused, please refer to the attachment below for a graphical explanation.

<u>Solve:</u>

Center = (2, 14)

Radius = 1

<em>Given formula</em>

(x - h)² + (y - k)² = r²

<em>Substitute the value into the formula</em>

(x - 2)² + (y - 14)² = (1)²

<em>Simplify</em>

(x - 2)² + (y - 14)² = 1

Hope this helps!! :)

Please let me know if you have any questions

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3 years ago
I need to get brain list
goldfiish [28.3K]

Answer:

what it do 5v

Step-by-step explanation:

5 0
4 years ago
7x-10=3x+14 whats the answer
ivann1987 [24]
X=6 is the answer to your question
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4 years ago
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A graph that shows proportional relationship has a ___________ and passes through the _________.
Mandarinka [93]

Answer:

A graph of a proportional relationship is a straight line that passes through the origin.

Step-by-step explanation:

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3 years ago
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