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uysha [10]
3 years ago
11

.75 is 75% of what number

Mathematics
2 answers:
horsena [70]3 years ago
7 0

Answer:

Answer is 1

Step-by-step explanation:


balu736 [363]3 years ago
3 0

Answer:

1

Step-by-step explanation:


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Chicago is home to 2.706 million people and the city sees approximately 55 million visitors each year. China has a population of
Norma-Jean [14]

China could expect a quantity of visitors of 8.512 × 10⁶ in Chicago.

<h3>How to apply direct proportions</h3>

A <em>direct</em> proportion is a <em>direct</em> relationship between two variables, which in this case is represented between the quantity of tourists in the city of Chicago and the population of the country of origin.

Let suppose the existence of direct proportionality and world has a population of 9000 million people, the quantity of Chinese visitors in the city of Chicago is determined by the following formula:

x = (1.393 × 10⁹ / 9 × 10⁹) × 55 × 10⁶

x = 8.512 × 10⁶

China could expect a quantity of visitors of 8.512 × 10⁶ in Chicago. \blacksquare

To learn more on direct proportions, we kindly invite to check this verified question: brainly.com/question/14389660

3 0
3 years ago
The following random sample was selected from a normal distribution: 4.5, 6.4, 2.3, 1.8, 5.3, then the 95% confidence interval t
kap26 [50]

Answer:

the 95% confidence interval to estimate the population mean is between  1.62 and 6.50

Step-by-step explanation:

given data

distribution = 4.5, 6.4, 2.3, 1.8, 5.3

so n = 5

confidence interval = 95%

to find out

the population mean is between

solution

first we calculate the mean i.e.

mean =  \frac{1}{n}\sum_{i=1}^{n}x(i)

mean =  4.5+ 6.4+ 2.3+ 1.8+ 5.3 / 5

mean = 4.06

now we calculate the standard deviation i.e.

standard deviation =   \sqrt{\frac{1}{n-1}\sum (x(i)-mean)^2}

standard deviation =   \sqrt{\frac{1}{5-1}\sum (x(i)-mean)^2}

standard deviation =   \sqrt{\frac{1}{5-1} (4.5-5)^2+(6.4-5)^2 +(2.3-5)^2+(1.8-5)^2+(5.3-5)^2}

standard deviation =   \sqrt{\frac{1}{4} (4.5-5)^2+(6.4-5)^2 +(2.3-5)^2+(1.8-5)^2+(5.3-5)^2}

standard deviation =  2.226544

so 95 % confidence interval is i.e. mean +/- t(5) * standard deviation/ \sqrt{n}

here t(5) will be 2.45

so

95 % confidence interval=  4.06 +/- 2.45 * 2.226 / \sqrt{5}

95 % confidence interval= 1.62 and 6.50

4 0
3 years ago
Can you help with this question???
umka2103 [35]
D - Hope this helps (:
8 0
4 years ago
Read 2 more answers
Add the polynomials (2x + 3) + (2x + 1)
anyanavicka [17]

Answer:

4(x+1)

Step-by-step explanation:

Factor 2x+3+2x+1

4x+4

=4(x+1)

6 0
3 years ago
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I need help with this one...please tell me you guys know this lol
Ganezh [65]
On nuber one is the second 
and number 2 is the third one
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