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Zigmanuir [339]
3 years ago
7

I need the answer for number 10 please!

Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
6 0

Answer:

3x + 4y = 833

6x + 4y = 1058

II - I

3x = 225 --> x = 75

3*75 + 4y = 833 --> y = 152


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A long novel is opened to a random page; the probability that the page is numbered something between 21 and 31.
Harrizon [31]

Using the uniform distribution, considering that the novel has 435 pages, the probability that the page is numbered something between 21 and 31 is:

p = \frac{10}{435}

<h3>What is the uniform probability distribution?</h3>

It is a distribution with two bounds, a and b, in which each outcome is equally as likely.

The probability of finding a value between c and d is:

P(c \leq X \leq d) = \frac{d - c}{b - a}

Researching the problem on the internet, it is found that the novel has 435 pages, hence a = 0, b = 435, and the probability that the page is numbered something between 21 and 31 is given by:

P(21 \leq X \leq 31) = \frac{31 - 21}{435 - 0} = \frac{10}{435}

More can be learned about the uniform distribution at brainly.com/question/13889040

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5 0
2 years ago
the u.s. census bureau needs to estimate the median income of males in the u.s., they collect incomes from 2500 males. state the
Shkiper50 [21]

Individual : a male in the United States

Variable : income

Population : All males in the United States

Sample : 2500 males of which the information is collected

Parameter : Median income of males in the U.S

Statistic : Median income of the 2500 males sampled

  • Any quality, amount, or number that can be gauged or tallied qualifies as a variable. A data item is another name for a variable.
  • A sample is a subset of units chosen to represent all the individuals in a population. Because just a portion of the population was counted, it is only a partial enumeration. To estimate the characteristics of the total population of interest, data from the sampled units is used.
  • A statistic is a numerical representation of a sample, whereas a parameter is a numerical representation of the entire population. 

To learn more about statistics, visit :

brainly.com/question/8058700

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4 0
2 years ago
Simplify (30x - 12y) + (41x + 62y)
Taya2010 [7]

Answer:

71x+50y

Step-by-step explanation:

8 0
3 years ago
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Convert 28.48 to a mixed number
Mrac [35]
.48 is equal to 48/100=12/25 so

28 12/25
7 0
3 years ago
Sheila purchased ski equipment for $513 using a six-month deferred payment plan. The interest rate after the introductory period
klemol [59]

$65 * 6 = $390 total monthly payments made

The downpayment made is $125, so the total balance at the end is:

balance = $513 – ($125 + $390)

balance = - $2

 

<span>There is an excess of 2 dollars at the end.</span>

4 0
3 years ago
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