ANSWER
About 162 people
EXPLANATION
The first step is to find the probability that a randomly selected student from her school takes the subway.
The probability is given as:
\(P(subway)=\frac{n(\text{subway)}}{n(\text{total)}}\)Since 8 out of 20 people take the subway, we have that:
\(\begin{gathered} P(subway)=\frac{8}{20} \\ P(subway)=\frac{2}{5} \end{gathered}\)Now, to find the number of students expected to take the subway, multiply the total number of students in her school by the probability that one person takes the subway.
That is:
\(\begin{gathered} 406\cdot\frac{2}{5} \\ \Rightarrow162.4 \\ \approx162\text{ people} \end{gathered}\)Therefore, Destiny should expect about 162 people to take the subway.
If 20 articles cost ? 90, then the cost of 9 articles is ?
? 45
? 4.50
? 40.50
? 42
Answer:
40.50 is correct answer according to me
how do i write the word form and the expanded form for 3.4 and 2.51
Answer:
(3×1)+(4/10) & two and fifty-one hundredths
Step-by-step explanation:
In order to write a decimal in expanded form you need to create a equation that equals the decimal you are trying to expand, and for writing decimal in word form you need to remember the names of place values.
1. 3.4
\(3.4=(3\times`1)+(\frac{4}{10} )\)
2.2.51
two and fifty-one hundredths
Hope this helps.
) Assume that a simple random sample has been selected from a normally distributed population and test the given claim at α = 0.05. State the claim mathematically. Identify the null and alternative hypotheses, test statistic, critical region(s), and the decision regarding the null hypothesis. State the conclusion that addresses the original claim. A local group claims that police issue at least 60 speeding tickets a day in their area. To prove their point, they randomly select two weeks. Their research yields the number of tickets issued for each day. The data are listed below. 70 48 41 68 69 55 70 57 60 83 32 60 72 58
We cannot conclude that there are more than 70,000 defined words in the dictionary.
To test the claim that there are more than 70,000 defined words in the dictionary, we can set up the null and alternative hypotheses as follows:
Null Hypothesis (H0): The mean number of defined words on a page is 48.0 or less.
Alternative Hypothesis (H1): The mean number of defined words on a page is greater than 48.0.
So, sample mean
= (59 + 37 + 56 + 67 + 43 + 49 + 46 + 37 + 41 + 85) / 10
= 510 / 10
= 51.0
and, the sample standard deviation (s)
= √[((59 - 51)² + (37 - 51)² + ... + (85 - 51)²) / (10 - 1)]
≈ 16.23
Next, we calculate the test statistic using the formula:
test statistic = (x - μ) / (s / √n)
In this case, μ = 48.0, s ≈ 16.23, and n = 10.
test statistic = (51.0 - 48.0) / (16.23 / √10) ≈ 1.34
With a significance level of 0.05 and 9 degrees of freedom (n - 1 = 10 - 1 = 9), the critical value is 1.833.
Since the test statistic (1.34) is not greater than the critical value (1.833), we do not have enough evidence to reject the null hypothesis.
Therefore, based on the given data, we cannot conclude that there are more than 70,000 defined words in the dictionary.
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I need to find the Laplace{(q'' + 110q' + 1000q)(θ(t-5))} with θ(t-a) as a Heaviside function. This is a part of a bigger problem but I don't know where to start with this part because of the notation. I am getting confused because I only know how to solve this in the form Laplace{ g(t-a)*θ(t-a) } but I don't understand how to manipulate the differential equation into that form.
θ(t - 5) = 1 if t ≥ 5 and 0 otherwise, so the Laplace transform of the second derivative term is
\(\displaystyle \int_0^\infty q''(t) \theta(t-5) e^{-st} \, dt = \int_5^\infty q''(t) e^{-st} \, dt \\\\\\ = \int_0^\infty q''(t) e^{-st} \, dt - \int_0^5 q''(t) e^{-st} \, dt \\\\\\ = L_s\left\{q''(t)\right\} - \int_0^5 q''(t) e^{-st} \, dt\)
Compute the remaining integral by parts.
\(u = e^{-st} \implies du = -se^{-st} \, dt \\ dv = q''(t) \, dt \implies v = q'(t)\)
\(\implies \displaystyle \int_0^5 q''(t) e^{-st} \, dt = q'(t) e^{-st} \bigg|_0^5 + s \int_0^5 q'(t) e^{-st} \, dt = \dfrac{q'(5)}{e^{5s}} - q'(0) + s \int_0^5 q'(t) e^{-st} \, dt\)
Integrating by parts again with similar choice of u and dv gives
\(\displaystyle \int_0^5 q'(t) e^{-st} \, dt = \dfrac{q(5)}{e^{5s}} - q(0) + s \int_0^5 q(t) e^{-st} \, dt\)
Recall that
\(\displaystyle \int_0^\infty q''(t) e^{-st} \, dt = s^2 Q(s) - sq(0) - q'(0)\)
\(\displaystyle \int_0^\infty q'(t) e^{-st} \, dt = s Q(s) - q(0)\)
where Q(s) is the Laplace transform of q(t).
It follows that
\(L_s\left\{q''(t) \theta(t-5)\right\} = (s^2 Q(s) - s q(0) - q'(0)) - \left[\dfrac{q'(5)}{e^{5s}} - q'(0) + s \left(\dfrac{q(5)}{e^{5s}} - q(0) + s \int_0^5 q(t) e^{-st} \, dt\right) \right]\)
or
\(L_s\left\{q''(t) \theta(t-5)\right\} = s^2 Q(s) - \dfrac{sq(5)+q'(5)}{e^{5s}} - s^2 \int_0^5 q(t) e^{-st} \, dt\)
Similarly, you can show that
\(L_s\left\{q'(t) \theta(t-5)\right\} = sQ(s) - \dfrac{q(5)}{e^{5s}} - s\int_0^5 q(t) e^{-st} \, dt\)
and
\(L_s\left\{q(t) \theta(t-5)\right\} = Q(s) - \int_0^5 q(t) e^{-st} \, dt\)
There's not much more one can say without knowing anything more about q(t) …
Let f left parenthesis x right parenthesis equals x cubed minus x squared minus 1 and x subscript 0 equals 1 . To the nearest three decimal places, find x subscript 5 using Newton's method of approximation.
The value of \(x_5\), rounded to the nearest decimal place using Newton's method of approximation is 1.466.
The correct answer is option B.
To find the value of \(x_5\)using Newton's method of approximation, we need to iterate the following formula:
\(x_(_n_+_1_) = x_n - f(x_n) / f'(x_n)\)
where f'(x) represents the derivative of the function f(x). Let's calculate the values step by step.
Given function: f(x) = \(x^3 - x^2 - 1\)
Step 1: Find the derivative of f(x)
f'(x) = \(3x^2 - 2x\)
Step 2: Initialize the starting value
\(x_0\)= 1
Step 3: Calculate \(x_1\)
\(f(x_0) = f(1) = (1^3) - (1^2) - 1 = 1 - 1 - 1 = -1\)
\(f'(x_0) = f'(1) = (3(1^2)) - (2(1)) = 3 - 2 = 1\)
\(x_1 = x_0 - f(x_0) / f'(x_0)\)
= 1 - (-1) / 1
= 2
Step 4: Calculate \(x_2\)
\(f(x_1) = f(2) = (2^3) - (2^2) - 1 = 8 - 4 - 1 = 3\)
\(f'(x_1) = f'(2) = (3(2^2)) - (2(2)) = 12 - 4 = 8\)
\(x_2 = x_1 - f(x_1) / f'(x_1)\)
= 2 - 3 / 8
= 1.625
Step 5: Repeat the process until we reach \(x_5\)
Performing the calculations for \(x_3, x_4, andx_5\), we find:
\(x_3\) ≈ 1.465
\(x_4\) ≈ 1.466
\(x_5\)≈ 1.466
After applying Newton's method of approximation to the function f(x) = \(x^3 - x^2 - 1,\)starting with,\(x_0 = 1,\) we iteratively calculated the values of \(x_1, x_2, x_3, x_4, and x_5\). The final approximation, \(x_5\), is approximately 1.466 when rounded to the nearest decimal place. This aligns with option B as the correct answer.
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i need help plz ok plz
The coordinates below lie on the line with the given slope. find the missing coordinate value. (2,2) (5,y) slope = 2
Step-by-step explanation:
Hey there!
The given points are; (2,2) and (5,y).
Slope (m) =2
Using formula for slope, we get;
\(m = \frac{y2 - y1}{x2 - x1} \)
Put all values.
\(2 = \frac{y - 2}{5 - 2} \)
Simplify it to get value of"y".
\(2 = \frac{y - 2}{3} \)
\(6 = y - 2\)
\(y = 6 + 2\)
Therefore, y= 8.
Hope it helps...
Evaluate mº - n2 for m = 2 and n = -1.
Answer:
\( \boxed{ \tt{0}}\)
Step-by-step explanation:
\(if \: mº - {n}^{2} \: for \: m = 2 \: and \: n = -1. \\ {2}^{0} - ( { - 1)}^{2} = 1 - (1) = 0\)
suppose that six people can stuff Flyers until 500 envelopes in five minutes assume all people work at the same steady rate. The relationship between the Number of people stuffing envelopes and the number of envelopes they can stuff in five minutes is what type of relationship how can you tail? Make a table and a graph to show the relationship and explain how to find several of the entries. Including entry for five people.
6 people stuff flyers into 500 envelopes in 5 minutes. They all work at the same rate.
From the question you can ascertain that if the number of people stuffing the Flyers into the envelopes increases the number of minutes they can stuff this Flyers in the envelopes decreases. Therefore the relationship between the number of people stuffing the envelopes and the number of minutes it takes to stuff the flyers in the envelope is an Inverse relationship. In other words the number of people stuffing the envelopes is inversely proportional to the number of minutes required to stuff the flyers into 500 envelopes . Mathematically,
Looking at the relationship 6 people takes 5 minutes . If the number of people decreases the number of minutes will increase. Therefore, 3 people which is half the number will take double the time which is 10 minutes . 1 person will take 6 times the time which is 30 minutes. Similarly, 2 people will take 3 times the time which is 15 minutes.
Please see the attached question and help me solve it.
Answer:
-1
Step-by-step explanation:
The only point on the graph with a y-value of 3 is the point (-1, 3).
That is g(-1) = 3, or x=-1 for g(x) = 3.
Answer:
x=-1
Step-by-step explanation:
g(x)=y = 3
as you can see on the graph, (-1,3)➡ -1 value of x is g(x)=3 ➡g(-1)=3
hope this helps ^-^
Solve for x.
50 = x - (-14)
Answer:
x = 36
Step-by-step explanation:
Multiply the numbers
50 = x -1 (-14)
50 = x + 14
Subtract 14 from both sides of the equation
50 = x + 14
50 - 14 = x + 14 - 14
Simplify
x = 36
[RevyBreeze]
Peter compared dog food prices, to find the better deal. The 25-pound
ag cost $30.00, and the 15-pound bag cost $17.85. Which pound bag is
me better deal?
Answer:
25 pound bag is the better deal
Step-by-step explanation:
Please use distribution and no need to graph.
Answer:
(x, y) = (0, 3)
Step-by-step explanation:
You want the solution to the system of equations ...
x + y = 3y = -3(2x -1)SubstitutionSince we are given an expression for y, it is convenient to use that to substitute for y in the first equation:
x + (-3(2x -1)) = 3
Solutionx + (-6x +3) = 3 . . . . . simplify
-5x +3 = 3 . . . . . . . . combine like terms
-5x = 0 . . . . . . . . . subtract 3
x = 0 . . . . . . . . . divide by -5
0 +y = 3 . . . . . substitute for x to find y
y = 3
The solution to these equations is (x, y) = (0, 3).
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The photographer got the baby to smile in 30% of the photos he took. If the baby smiled in 12 photos how many photos did the photographer take
Answer:
40 photos
Step-by-step explanation:
\(\frac{3}{10} =\frac{12}{y}\)
3 × y = 12 × 10
3y = 120
y = 40
5(1+s)=9s+6
----------------
Answer:
5(1+s) = -9s +6
Step-by-step explanation:
Can y’all pls answer both questions
The number of times of Puerto Rico is 5/6
No earthquake released 10³ of Colombia
How to determine the number of timesFrom the question, we have the following parameters that can be used in our computation:
The table of values
On the table of values, we have
Colombia = 6.0M
Puerto Rico = 5.0M
This means that
Number of times = Puerto Rico/Colombia
Substitute the known values in the above equation, so, we have the following representation
Number of times = 5/6
The earthquake that released 10³ of ColombiaHere, we have
Colombia = 6.0M
So, we have
Earthquake = Colombia * 10³
This gives
Earthquake = 6 * 10³
From the table of values, we have no entries with the readings 6 * 10³
Hence, no earthquake released 10³ of Colombia
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carpet is sold in square yards how much carpet would a person need to buy for a rectangle that has dimensions of 10 yards by 18 feet
A person would need to buy 60 square yards of carpet for a rectangular room with dimensions of 10 yards by 18 feet.
How to determine the amount of carpet needed for a rectangular room?
To determine the amount of carpet needed for a rectangular room, you need to convert the measurements to the same unit of measurement. Since the carpet is sold in square yards, we need to convert the dimensions of the room to yards.
The length of the room is given in yards, so we don't need to make any conversions for that dimension. However, the width of the room is given in feet, so we need to convert it to yards by dividing by 3 (since there are 3 feet in a yard),
18 feet ÷ 3 feet/yard = 6 yards
So the dimensions of the room in yards are 10 yards by 6 yards.
To find the total area of the room, we need to multiply the length and width,
10 yards × 6 yards = 60 square yards
Therefore, a person would need to buy 60 square yards of carpet for a rectangular room with dimensions of 10 yards by 18 feet.
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Given that (1, 0, 1) is a solution to a system of three linear equations, which of the following is true about the system?
The true option about the system of linear equation is that the system can only be independent and consistent.
How to illustrate the equation?It should be noted that the system is consistent as it can illustrate more than a solution.
Also, it can't be independent and dependent at the same time as depicted in some of the option given.
In this case, true option about the system is that the system can only be independent and consistent.
The complete question is:
Given that (1, 0, 1) is a solution to a system of three linear equations, which of the following is true about the system?
The system can be either inconsistent or consistent.
The system can be either independent or dependent.
The system can only be independent and consistent.
The system can only be dependent and inconsistent.
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For two functions, a(x) and b(x), a statement is made that a(x) = b(x) at x = 2. What is definitely true about x = 2?
a) Both a(x) and b(x) have a maximum or minimum value at x = 2.
b) Both a(x) and b(x) have the same output value at x = 2.
c) Both a(x) and b(x) cross the x-axis at 2.
d) Both a(x) and b(x) cross the y-axis at 2.
Answer: a) Both a(x) and b(x) have a maximum or minimum value at x = 2.
Step-by-step explanation:
Andy is hanging wallpaper in his kitchen. He is to cover 2 2/5 of the walls in the room using 6 rolls of paper. What is the number of rolls of paper used per wall?
The number of rolls of paper used per wall will be 1.5 rolls per wall.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.
Andy is hanging wallpaper in his kitchen. He is to cover 2 2/5 of the walls in the room using 6 rolls of paper. We know that the room has 4 walls.
Then the number of rolls of paper used per wall is given as,
⇒ 6 / 4
⇒ 1.5 rolls per wall
The number of rolls of paper used per wall will be 1.5 rolls per wall.
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Convert 50°F to degrees Celsius.
If necessary, round your answer to the nearest tenth of a degree.
Here are the formulas.
C=5/9(F-32)
F=9/5C+32
Answer:
10°C
Step-by-step explanation:
F = 50
C = 5/9 * (F - 32) = 5/9 * (50 - 32) = 5/9 * 18 = 5 * 2 = 10
Please help.
Thank you in advance.
Answer:
its the last box and whisker plot
Step-by-step explanation:
4.2 x 10^8 is how many times the value of 2.1 x 10^2
A. 2 x 10^4
B. 2 x 10^6
C. 2.1 x 10^6
D. 2.1 x 10^4
4.2 x 10^8 is 2*10^6 times the value of 2.1 x 10^2 when division is performed.
How can the number of times can be calculated?The concept that will be used to solve the question is division operation.
We were given 4.2 x 10^8 which is greater than 2.1 x 10^2
The operation can be expressed as :
4.2 x 10^8 =( n *2.1 x 10^2)
where n = the number of times that 4.2 x 10^8 is greater than 2.1 x 10^2
Then make n the subject of the formular which is
n = 4.2 x 10^8/2.1 x 10^2
n = 2*10^6
Therefore, the values of 4.2 x 10^8 is greater than 2.1 x 10^2 in 2*10^6 times.
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Solve the triangle. Round decimal answers to the nearest tenth.
Answer:
51
Step-by-step explanation:
To find the slope of a curve at a given point, we simply differentiate the equation of the curve and find the first derivative of the curve, i.e., dy/dx.
To find the slope of the curve, first differentiate the equation of the curve and substitute the value of x in the result
The slope of the curve is the change in y coordinates with respect to the change in x coordinates of the line
To find the slope of the curve at a given point
First differentiate the given equation of the curve with respect to x
That is dy / dx.
The derivative of the equation of the curve is the slope of the curve.
In next step substitute the value of x in the slope of the curve
The result will be the slope of the curve at a given point
Therefore, these are the steps to find the slope of the curve
I have answered the question in general, as the given question is incomplete
The complete question is:
How to find the slope of a curve at a given point?
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In 1995, wolves were introduced into Yellowstone Park.
The function `w\left(x\right)=14\cdot1.08^{x}` models the number of wolves, `w`, in the years since 1995, `x`.
By what percent does the number of wolves change each year?
In this manner, the number of wolves changes by around 8 percentage 8% each year based on the given work.
Percent calculation.
To determine the percentage change within the number of wolves each year, we ought to look at the development rate of the work w(x) = 14 * 1.08^x.
The development rate in this case is given by the example of 1.08, which speaks to the figure by which the number of wolves increments each year. In this work, the coefficient 1.08 speaks to a development rate of 8% per year.
To calculate the percentage change, we subtract 1 from the growth rate and increase by 100 to change over it to a rate:
Percentage change = (1.08 - 1) * 100 = 0.08 * 100 = 8%.
In this manner, the number of wolves changes by around 8 percentage 8% each year based on the given work.
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The graph of the equation x + 3y = 6 intersects the y-axis at what the point?
Answer:
It intersects the y-axis at point (0, 2).
Step-by-step explanation:
x + 3y = 6
3y = -x + 6
y = -1/3x + 2
Answer:
4. (6,0)
Step-by-step explanation:
Plug the points into the equation.
6+3(0)=6
6+0=6
6=6
If g(x)=4(x-5), find the value of x if g(x)=8
Answer:
4(8-5)
32 -20
12
time series data of a typical the gap store should show which of the following data patterns? multiple choice a. trend b. cyclical c. seasonal d. all of the options are correct. e. random
The time series data should show a. trend b. cyclical c. seasonal, so the correct answer is d. all of the options are correct.
What is time series data:
Time series data refers to a collection of data points that are measured over time at regular intervals. The time series data could refer to various metrics such as sales, revenue, foot traffic, website traffic, inventory levels, and other relevant business metrics that change over time.
By analyzing time series data, businesses can gain insights into trends, patterns, and other factors that can affect their operations.
Time series can be used for forecasting. By analyzing past trends and patterns, businesses can make predictions about future performance and take proactive measures to achieve their goals.
Since the time series will follow the trend, have multiple choices, and will be cyclical and it will analyze the patterns over time periods seasonally.
Therefore,
The time series data should show a. trend b. cyclical c. seasonal, so the correct answer is d. all of the options are correct.
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How can the Distributive Property be used to find 7 x 391?
Select all that apply.
WILD
A. 7 x 391 = 7 % (300 +90 + 1)
B. 7 x 391 = 7+ (300 +90 + 1)
C. 7 x 391 = (7 x 300) +90 + 1
D. 7 391 = (7 x 300) + (7 90) + (7 x 1)
E. 7 * 391 = 2,100 + 630 + 7
Answer:
The answer is B
Step-by-step explanation:
The Distributive Property be used to find 7 x 391; 7 x 391 = (7 x 300) + (7x 90) + (7 x 1). Therefore, option D is the correct answer.
What is distributive property of multiplication over addition?Suppose a, b and c are three numbers. Then we have:
a(b + c) = a x b + a x c
(a(b+c) means a multiplied to (b+c). The sign of multiplication is usually hidden when using symbols and both quantities which are in multiplication are written together without space)
Also This property is known by distributive law and applies to subtraction also.
The Distributive Property be used to find 7 x 391;
7 x 391 = (7 x 300) + (7x 90) + (7 x 1)
Therefore, option D is the correct answer.
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