The number of ways or permutations you fill three different positions by choosing from 15 different people is D. 15 × 14 × 13 ways
What is permutation?Permutations is number of ways of arranging n objects in r ways. It is given by ⁿPₓ = n!/(n - x)!
Now since we want to find how many ways can you fill three different positions by choosing from 15 different people, we proceed as follows.
The number of ways of choosing 3 different positions from 15 different peope is ¹⁵P₃ = 15!/(15 - 3)!
= 15 × 14 × 13 × 12!/12!
= 15 × 14 × 13 ways
So, the number of ways or permutations is D. 15 × 14 × 13 ways
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20 POINTS! Can someone please help me solve this? before 11:59pm.
Answer: 46.0 inches
Step-by-step explanation:
Since this measurement is the diagonal length, this will be a right triangle we can use the Pythagorean theorem where a and b are the legs and c is the hypotenuse.
a² + b² = c²
43² + b² = 63²
1,849 + b² = 3,969
b² = 2,120
b = \(\sqrt{2,120}\)
b ≈ 46.0435
Rounded to the nearest tenth of an inch:
46 inches
If a country has a crude birth rate of 24 per 1,000 and a crude death rate of 8 per 1,000, the natural annual percent increase of its population is0.6%1.6%3%16%32%
The natural annual percent of increase of its population is 1.6%, under the given condition that in the given country possess a crude birth rate of 24 per 1,000 and crude death rate of 8 per 1,000.
Then the correct option is Option B.
For the purpose of evaluating the natural annual percent of increase in a population we have to subtract crude death rate from crude birth rate and then dividing by 10.
So for the given case,
the natural annual percent of increase in the population would be
((24-8)/10)
= 1.6%
The natural annual percent of increase of its population is 1.6%, under the given condition that in the given country possess a crude birth rate of 24 per 1,000 and crude death rate of 8 per 1,000.
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The complete question
If a country has a crude birth rate of 24 per 1,000 and a crude death rate of 8 per 1,000, the natural annual percent increase of its population is
a) 0.6%
b)1.6%
c) 3%
d)16%
e) 32%
A pig is given scrabble tiles { A, A, A, B, N, N }. What is the probability that the pig will spell the word BANANA if it randomly places the letters in line?
To calculate the probability of spelling the word "BANANA" using the given scrabble tiles, we need to determine the total number of possible arrangements of the tiles and the number of favorable arrangements that spell the word "BANANA."
Total number of possible arrangements:
The pig has 6 tiles: { A, A, A, B, N, N }. We can calculate the total number of possible arrangements using permutations since the tiles are distinct. There are a total of 6 tiles, so the number of possible arrangements is 6!.
6! = 6 x 5 x 4 x 3 x 2 x 1 = 720
Number of favorable arrangements:
To spell the word "BANANA," we need one 'B,' three 'A's, and two 'N's. The pig has only one 'B,' so there is only one possible arrangement for the 'B.' For the three 'A's, we have 3! (3-factorial) arrangements since they are indistinguishable. Similarly, for the two 'N's, we have 2! (2-factorial) arrangements.
Arrangements for 'B' = 1
Arrangements for 'A' = 3!
= 3 x 2 x 1
= 6
Arrangements for 'N' = 2!
= 2 x 1
= 2
Number of favorable arrangements = Arrangements for 'B' x Arrangements for 'A' x Arrangements for 'N'
= 1 x 6 x 2
= 12
Probability of spelling "BANANA":
The probability is calculated by dividing the number of favorable arrangements by the total number of possible arrangements.
Probability = Number of favorable arrangements / Total number of possible arrangements
= 12 / 720
= 1 / 60
≈ 0.0167
Therefore, the probability that the pig will spell the word "BANANA" if it randomly places the letters in line is approximately 0.0167 or 1/60.
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D
Question 3
1 pts
Which expression is equivalent to sin(200°)?
-Sin 20°
cos 20°
cos 70°
-sin 70°
-
Activate
Rewrite the angle as a sum or difference with its
reference angle: sin(180° + 20°)
Simplify the expression using the general
reduction formula: sin(20)
Calculate the approximate value: -0.34202
Answer: -0.34202
can someone help me with this?
Answer:
1 is C and 2 is B
Step-by-step explanation:
please help! view the picture :)
due soon
The answer is 30~~~~~~~~
3.
Find the rate of change for the situation. A chef cooks 9 lbs of chicken for 36 people and 17 lbs of chicken for 68 people.
A. 4 lb per person
B. \(\frac{1}{4}\) lb per person
C. \(\frac{9}{17}\) lb per person
D. 36 people
Answer: 1/4
Answer:
Step-by-step explanation:
Here is the complete question: Find the rate of change for the situation:
A chef cooks 9 lbs of chicken for 36 people and 17 lbs of chicken for 68 people.
Given: 1st situation, A chef cook 9 lbs chicken for 36 people.
2nd situation, chef cook 17 lbs chicken for 68 people.
∴ 1st situation, weight of chicken per person=
Weight of chicken per person=
2nd situation, weight of chicken per person=
Weight of chicken per person=
In both the situation chef cook same amount of chicken per person, which is
∴ Rate of change is
Step-by-step explanation:
There are several important information's already given in the question. Based on those information's the answer can be easily deduced.
In the first case,
The amount of chicken the chef cooks for 36 people = 9 pounds
Then
The amount of chicken the chef cooks for 1 person = 9/36
= 1/4 pounds
Now let us take the second case
The amount of chicken the chef cooks for 68 people = 17 pounds
Then
The amount of chicken the chef cooks for 1 person = 17/68
= 1/4 pounds
From the above deductions, it can be concluded that the correct option among all the options given in the question is the third option or option "B".
Please help with systems of equations need super urgent
*Check the pic*
Answer:
y = ±5
x = ±6
Step-by-step explanation:
Here we have the system:
x^2 + y^2 = 61
x^2 - y^2 = 11
Notice that we have both variables squared, then we can define:
x^2 = X
y^2 = Y
And write our system as:
X + Y = 61
X - Y = 11
To solve this, the first step is to isolate one of the variables in one of the equations, i will isolate X in the second equation:
X = 11 + Y
Now we can replace this in the other equation to get:
(11 + Y) + Y = 61
Now we can solve this for Y
11 + 2*Y = 61
2*Y = 61 - 11 = 50
Y = 50/2 = 25
Y = 25
And remember that Y = y^2
then:
y^2 = 25
y = √25 = ±5
And using the equation: X = 11 + Y
X = 11 + 25 = 36
X = x^2 = √36 = ±6
If you have 47.2 in a class and you get a 60 point assignment and pass with 100%,
what would you grade be in the class now?
By calculation, your grade in the class now is 78.7
How to determine what your grade would be in the class now?From the question, we have the following parameters that can be used in our computation:
Score of 47.2 in 60
Represent the score in 100% with x
So, we have the following equation
47.2/60 = x/100
Multiply both sides of the equation by 100
So, we have
100 * 47.2/60 = x/100 * 100
This gives
100 * 47.2/60 = x
So, we have
x = 100 * 47.2/60
Evaluate
x = 78.7
Hence, your grade in the class now is 78.7
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1. Let the distribution of X be the normal distribution N (μ, σ2) and let Y = aX + b. Prove that Y is distributed as N (aμ + b, a2σ2).
2. Let X and Y be two independent random variables with E|X| < [infinity], E|Y| < [infinity] and E|XY| < [infinity]. Prove that E[XY] = E[X]E[Y].
1 Y is distributed as N(aμ + b, a^2σ^2), as desired.
2 We have shown that under these conditions, E[XY] = E[X]E[Y].
To prove that Y is distributed as N(aμ + b, a^2σ^2), we need to show that the mean and variance of Y match those of a normal distribution with parameters aμ + b and a^2σ^2, respectively.
First, let's find the mean of Y:
E(Y) = E(aX + b) = aE(X) + b = aμ + b
Next, let's find the variance of Y:
Var(Y) = Var(aX + b) = a^2Var(X) = a^2σ^2
Therefore, Y is distributed as N(aμ + b, a^2σ^2), as desired.
We can use the definition of covariance to prove that E[XY] = E[X]E[Y]. By the properties of expected value, we know that:
E[XY] = ∫∫ xy f(x,y) dxdy
where f(x,y) is the joint probability density function of X and Y.
Then, we can use the fact that X and Y are independent to simplify the expression:
E[XY] = ∫∫ xy f(x) f(y) dxdy
= ∫ x f(x) dx ∫ y f(y) dy
= E[X]E[Y]
where f(x) and f(y) are the marginal probability density functions of X and Y, respectively.
Therefore, we have shown that under these conditions, E[XY] = E[X]E[Y].
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PLSSSS HELPPP ME ASAAPPP PLSS ANSWER BOTH QUESTIONS!!!!!!!!!!
I WILL GIVE BRAINLIEST!!!!
Consider a sample with data values of 55, 56, 70, 61, 53, 57, 50, 73, 52, 69, and $2. Compute the mean, median, and mode.
If required, round your answers to two decimal places.
Mean = ________
Median = _________
Mode = _________
The mode of the given data values is N/A (not applicable).Hence, the mean, median, and mode of the given data values are:Mean = 54.36Median = 55.5Mode = N/A (not applicable)
Given data values are 55, 56, 70, 61, 53, 57, 50, 73, 52, 69, and 2. We need to calculate the mean, median, and mode of this sample.So, let's first arrange the data values in ascending order:2, 50, 52, 53, 55, 56, 57, 61, 69, 70, 73
Mean:The mean is the sum of all the data values divided by the total number of data values. So, we can use the following formula to calculate the mean:
Mean = (sum of all the data values) / (total number of data values)Sum of all the data values = 55 + 56 + 70 + 61 + 53 + 57 + 50 + 73 + 52 + 69 + 2 = 598Total number of data values = 11
Therefore,Mean = (sum of all the data values) / (total number of data values) = 598 / 11 = 54.36 (rounded to two decimal places)Therefore, the mean of the given data values is 54.36.
Median:The median is the middle value of a sorted data set. Since the data set has 11 data values, the median is the average of the 6th and 7th values (counting from smallest to largest).
Therefore, the median is :Median = (55 + 56) / 2 = 55.5Therefore, the median of the given data values is 55.5.
Mode:The mode is the data value that appears most frequently in the data set. In this case, there is no data value that appears more than once. So, there is no mode.
Therefore, the mode of the given data values is N/A (not applicable).Hence, the mean, median, and mode of the given data values are:Mean = 54.36Median = 55.5Mode = N/A (not applicable)
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A cylinder holds 50 cubic centimeters of water. If you triple the radius and height of the cylinder, how much water would you need to fill the new cylinder?
Answer: Let's start by finding the volume of the original cylinder using the formula:
V = πr^2h
where V is the volume, r is the radius, and h is the height.
We know that the volume of the original cylinder is 50 cubic centimeters, so we can write:
50 = πr^2h
Next, we triple both the radius and height to get the dimensions of the new cylinder:
New radius = 3r
New height = 3h
The volume of the new cylinder can be calculated using the same formula:
V = π(3r)^2(3h) = 27πr^2h
So, we need to find the volume of the new cylinder in terms of the original volume of 50 cubic centimeters:
27πr^2h = 27π(50/h)r^2h = 1350πr^2h
Therefore, the new cylinder would require 1350 cubic centimeters of water to fill.
Step-by-step explanation:
Descriptive and inferential statistics work cooperatively, and which one you use and when depends on ______.
Descriptive and inferential statistics are two branches of statistics that work together to analyze and interpret data. The choice of which type to use depends on specific factors and objectives of the research or analysis being conducted.
Descriptive statistics involve summarizing and presenting data in a meaningful way. They include measures such as central tendency (mean, median, mode), dispersion (standard deviation, range), and graphical representations (histograms, box plots) to describe the characteristics of a dataset. Descriptive statistics provide a clear and concise summary of the data, enabling researchers to understand its distribution and key features.
On the other hand, inferential statistics involve drawing conclusions or making inferences about a population based on a sample. Inferential statistics use probability theory to make estimations, test hypotheses, and assess relationships between variables. They involve techniques such as hypothesis testing, confidence intervals, and regression analysis. Inferential statistics help researchers make generalizations or predictions about a larger population beyond the observed sample.
The choice between descriptive and inferential statistics depends on the research question, objectives, available data, and the level of understanding sought. Descriptive statistics are used to summarize and describe data, while inferential statistics are employed to make broader inferences and draw conclusions about populations. Both types of statistics are valuable and are utilized depending on the specific analysis goals and research context.
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A boat has a speed of 11 mph in still water. If the boat takes the same time to go 40 miles upstream as it takes to go 70 miles downstream, what is the speed of the current
To solve this problem, let's assume the speed of the current is "x" mph. When the boat is traveling upstream (against the current), its effective speed is reduced by the speed of the current. Therefore, the speed of the boat relative to the water is 11 - x mph.
When the boat is traveling downstream (with the current), its effective speed is increased by the speed of the current. Therefore, the speed of the boat relative to the water is 11 + x mph.
Now, let's calculate the time taken for each leg of the journey:
Time taken to go 40 miles upstream = Distance / Speed
Time taken to go 40 miles upstream = 40 / (11 - x) hours
Time taken to go 70 miles downstream = Distance / Speed
Time taken to go 70 miles downstream = 70 / (11 + x) hours
According to the problem, these times are equal. So, we can set up the equation:
40 / (11 - x) = 70 / (11 + x)
To solve this equation, we can cross-multiply:
40 * (11 + x) = 70 * (11 - x)
440 + 40x = 770 - 70x
Now, let's solve for x:
110x = 330
x = 3
Therefore, the speed of the current is 3 mph.
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Two cars travel at the same speed to different destinations. Car A reaches its destination in 12 minutes. Car B reaches its destination in 18 minutes. Car B travels 4 miles farther than Car A. How fast do the cars travel? Write your answer as a fraction in simplest form.
Answer:
chatGPT
Step-by-step explanation:
Let's denote the speed of each car as v, and the distance that Car A travels as d. Then we can set up two equations based on the information given:
d = v * (12/60) (since Car A reaches its destination in 12 minutes)
d + 4 = v * (18/60) (since Car B travels 4 miles farther than Car A and reaches its destination in 18 minutes)
Simplifying the equations by multiplying both sides by 60 (to convert the minutes to hours) and canceling out v, we get:
12v = 60d
18v = 60d + 240
Subtracting the first equation from the second, we get:
6v = 240
Therefore:
v = 240/6 = 40
So the cars travel at a speed of 40 miles per hour.
What is the smallest positive integer that can be written as the sum of two cubes in two different ways?
In light of this, 9 is the smallest positive integer that can be expressed as the sum of two cubes stated in two separate ways.
what is integer ?In statistics, an integer refers to any number that is not a fractional or a decimal and can be good, negative, or zero. A subset of real numbers called integers can be seen on a number line. Integers include things like -3, -2, -1, 0, 1, 2, 3, and so forth. Integers are utilised in algebra, numerical methods, and other areas of mathematics in addition to basic operations like addition, deletion, multiplication, and division.
given
Trying various numbers for a and b before figuring out c and d is one technique to go forward. As an illustration, let's start with a = b = 1:
\(1^3 + 1^3 = 2\)
Due to the following values of a and b, 2 is not a perfect cube.
\(2^3 + 1^3 = 9\)
We can attempt all values of c and d such that c3 + d3 = 9 to see if we can discover another pair of cubes that add up to 9:
\(c = 0, d = 2: 0^3 + 2^3 = 8\\c = 1, d = 2: 1^3 + 2^3 = 9\\c = 2, d = 1: 2^3 + 1^3 = 9\\c = 2, d = 0: 2^3 + 0^3 = 8\)
In light of this, 9 is the smallest positive integer that can be expressed as the sum of two cubes stated in two separate ways.
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Find two functions f and g such that
(f ∘ g)(x) = h(x). (There are many correct answers. Use non-identity functions for f(x) and g(x).)
h(x) = sqrt(3-x)
The two functions f(x) and g(x) are f(x) = √x and g(x) = x - 3
How to determine the two functions f(x) and g(x)From the question, we have the following parameters that can be used in our computation:
h(x) = sqrt(x - 3)
(f ∘ g)(x) = h(x)
This means that
(f ∘ g)(x) = sqrt(x - 3)
Rewrite the above equation properly
So, we have the following representation
(f ∘ g)(x) = √(x - 3)
The function (f ∘ g)(x) is calculated as
(f ∘ g)(x) = f(g(x))
So, we have
f(g(x)) = √(x - 3)
This means that
f(g(x)) = √g(x)
By comparison. we have
g(x) = x - 3
f(x) = √x
Hence, the functions are f(x) = √x and g(x) = x - 3
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Help me please >:] Angles suck
(Hey, angles rock!)
Answer:
45 + 60 = 105
Step-by-step explanation:
ABC consists of two angles, angle ABD and angle DBC. Therefore, the sum of the measures of angles ABD and DBC is the measure of ABC.
45 + 60 = 105
Which graph best represents a system of equations that has no solution?
Answer:
um i think no.C but don't know how to explain
Answer:
C
Step-by-step explanation:
C, because there ain't no lines intercepting on graph c
simplify
5p - 4p - 4p
Answer:
-3p
Step-by-step explanation:
Answer:
-3p
Step-by-step explanation:
5p - 4p = 1p - 4p = -3p
PLEASEEEE HELP ME PLEASEEE AM STRUGGLING
find a second path that show this limit does not exist. let the first path be y = 0. Lim (x,y) --> (0,0) -5x^3y/-4x^6+7y^2
Since the limit evaluates to different values along different paths, we conclude that the limit does not exist at (0,0).
What is straight line?A straight line is a geometrical concept that represents a set of points that extend infinitely in both directions without any curvature or deviation. It is the shortest distance between two points in Euclidean geometry and is defined by two points on the line. Any two distinct points in a plane can be connected by a unique straight line. Straight lines are fundamental in mathematics, physics, and engineering, and are used to represent many concepts, including trajectories, vectors, and functions.
To show that the limit does not exist, we need to find another path where the limit evaluates to a different value or does not exist.
Let's consider the path y = mx, where m is any constant. Then, as (x, y) approaches (0, 0) along this path, we have:
\(lim (x,y)\) → \((0,0) -5x^3y / (-4x^6 + 7y^2)\)
\(= lim x\) → \(0 -5x^3(mx) / (-4x^6 + 7(mx)^2)\) [substituting y = mx]
\(= lim x\) → \(0 -5m x^4 / (-4x^6 + 7m^2x^2)\)
\(= lim x\) → \(0 (-5m / x^2) / (-4x^4 + 7m^2)\)
\(= lim x\) → \(0 5m / (4x^2 - 7m^2)\)
Now, the limit will not exist if this expression evaluates to different values for different choices of m.
If m = 0, then the expression becomes 0/0, which is an indeterminate form. We can use L Hsopital's rule to evaluate this limit:
\(Lim x\) → \(0 5m / (4x^2 - 7m^2)\)= \(lim x\) → \(0 (d/dx)(5m) / (d/dx)(4x^2 - 7m^2)\)
= \(Lim x\) →\(0 0 / (8x) = 0\)
If m ≠ 0, then the denominator \(4x^2 - 7m^2\)will be nonzero as x approaches 0. Therefore, the limit will be:
\(lim x\) →\(0 5m / (4x^2 - 7m^2)\)= ±∞, depending on the sign of 5m and \(4x^2\) - \(7m^2.\)
Since the limit evaluates to different values along different paths, we conclude that the limit does not exist at (0,0).
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what is the slope of the line that passes through (4,7) and has a y-intercept of 1?
Answer:
\(m=\frac{3}{2}\)
Step-by-step explanation:
The x value of the y-intercept must be 0, so let
\((x_1,y_1)=(0,1)\)
and
\((x_2,y_2)=(4,7)\)
The slope of a line can be found with the following:
\(m=\frac{y_2-y_1}{x_2-x_1}\)
So,
\(m=\frac{(7)-(1)}{(4)-(0)}\\m=\frac{6}{4}\\m=\frac{3}{2}\)
I'm single as a pringle and ready to mingle
nice same here but im NOT mingling with you
Answer:
mmmmmm points
Step-by-step explanation:
1.
M = {2,3,5,7,11} and N = {odd numbers between 7 and 11}. Find A n B
a. {7,11)
b. {9}
c. {}
d. {2,3,5,7,9,11)
Answer:
^set chapters^
my amwer lies in paper
Determine the coordinate of the point where y=x-7 crosses the y-axis
Answer:
(0, -7)
Step-by-step explanation:
Answer:
0,-7
Step-by-step explanation:
You can either graph it onto a calculator/desmos, or you can solve for y by making x=0 then your just left with y=-7
Please help me this is the question I got wrong on my quiz I get to take it again tomorrow and I do not understand please help
Answer:
A
Step-by-step explanation:
The standard form of a circle equation is:
(x - h)^2 + (y - k)^2 = r^2
where (h, k) is the center and r is the radius.
We can plug in the given values to get:
(x + 1)^2 + (y - 2)^2 = 9
This is the same as option A
Complete the proof.
Given: RS tangent to circle A and circle B at points R and S.
Prove: AR || BS
In the given proof shown below, the idea of tangents and perpendicularity is used to set up a relationship between two lines, AR and BS.
What is tangent the circle?The tangent is a term that is used to tell more or described as the point of contact between a circle or an ellipse and a single line.
Based on the fact that the tangent line is perpendicular to radius of the circle.
Hence, AR ⊥ RS and BS ⊥ RS
Therefore, AR and BS ⊥ similar to line RS.
So, the line AR or BS are said to be either in same line or parallel. because , they are the radius of different circles.
Therefore, AR ║BS.
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1. nine more than thirty divided by ten
Answer:
3.9
Step-by-step explanation:
nine more than thirty=39
39/10=3.9