Answer:
26r^2 + 36r.
Step-by-step explanation:
Find the new coordinates for the image under the given translation. Square RSTU with vertices R(-2, 1), S(3, 4), T(6, -1), and U(1, -4): (x, y) → (x-4, y − 1) - -9-8-7 -6 -5 -4 -3 -2 -1 0 1 2 R' (, ) S' (, ) T'(,0) U'(,) 3 4 LO 5 6 7 8 9
Thus, the new coordinates for the image of translated Vertices of Square RSTU are- R'(-6, 0), S'(-1, 3), T'(2, -2) and U'(-3, -5).
Define about the translations:In mathematics, a translation moves an object throughout the coordinate plane while preserving its dimensions and shape. After a translation, its area and orientation remain unchanged.
The vertical shift, horizontal shift, or perhaps a combination of the two can be referred to as a translation in mathematics.
Given that:
Vertices of Square RSTU.
R(-2, 1), S(3, 4), T(6, -1), and U(1, -4):
translation: (x, y) → (x-4, y − 1)
New vertices:
R(-2-4, 1 − 1) --> R'(-6, 0)
S(3-4, 4 − 1), ---> S'(-1, 3)
T(6-4, -1 − 1), -> T'(2, -2)
U(1-4, -4 − 1) --> U'(-3, -5)
Thus, the new coordinates for the image of translated Vertices of Square RSTU are- R'(-6, 0), S'(-1, 3), T'(2, -2) and U'(-3, -5).
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In a discussion between Modise and Benjamin about functions, Benjamin said that the diagram below represents a function, but Modise argued that it does not. Who is right? Motivate your answer. x - Input value 5 8 y-Output value - 2 - S 7 -9
Modise is correct, as the input of 5 is mapped to the outputs of 2 and 9, hence the relation does not represent a function.
When does a relation represents a function?A relation represents a function if each value of the input is mapped to only one value of the output, that is, one input cannot be mapped to multiple outputs.
For a point in the standard format (x,y), we have that:
x is the input.y is the output.The meaning is that the input given by the x-coordinate is mapped to the output given by the y-coordinate.For this problem, there are two arrows departing the input of 5, meaning that the input of 5 is mapped to the outputs of 2 and 9, hence the relation is not a function.
Missing InformationThe diagram is given by the image presented at the end of the answer.
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HELP PLEASE I AM STRUGGLING!!!!!!!!!!!!
Consider the function f(x)=x(x-4).
If the point (2+c,y) is on the graph of f(x), the following point will also be on the graph of f(x):
The point (c-2, y) will also be on the graph of f(x) if the point (2+c, y) is on the graph. The correct option is (c-2, y).
If the point (2+c, y) is on the graph of f(x) = x(x-4), we can determine the x-value of the following point on the graph by substituting the given x-value into the function.
1. Start with the given point (2+c, y).
2. Substitute the x-value into the function f(x) = x(x-4):
f(2+c) = (2+c)((2+c)-4)
= (2+c)(c-2)
= c(c-2) + 2(c-2)
= c² - 2c + 2c - 4
= c² - 4
So, the y-value of the point (2+c, y) on the graph of f(x) is y = c² - 4.
Now, let's determine the x-value of the following point on the graph by considering the options provided.
If we select the value (c-2) as the x-value of the following point, we can substitute it into the function f(x) to find the corresponding y-value.
f(c-2) = (c-2)((c-2)-4)
= (c-2)(c-2-4)
= (c-2)(c-6)
= c(c-6) - 2(c-6)
= c² - 6c - 2c + 12
= c² - 8c + 12
So, the y-value of the point (c-2, y) on the graph of f(x) is y = c² - 8c + 12.
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The complete question:
Consider the function f(x)=x(x-4).
If the point (2+c,y) is on the graph of f(x), the following point will also be on the graph of f(x):
Select a Value
(c-2,y)
(2-c,y)
A large container has 6 gallons of acid that needs to be dilluted by adding water. define the formula that models the ratio of the number of gallons of acid in the container compared to the total volume of liquid in the container when x gallons of water is added
The formula that models the ratio y is:
y = 6 / (6 + x)
Let y be the ratio of the number of gallons of acid in the container compared to the total volume of liquid in the container, and let x be the number of gallons of water added to the container.
Initially, the container has 6 gallons of acid and 0 gallons of water, for a total volume of 6 gallons. When x gallons of water is added, the total volume of liquid becomes 6 + x gallons, and the amount of acid remains at 6 gallons.
Therefore, the formula that models the ratio y is:
y = 6 / (6 + x)
This formula gives the ratio of the number of gallons of acid in the container compared to the total volume of liquid in the container when x gallons of water is added.
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If the table shows the results for spinning the spinner 50 times. What is the relative frequency for the event "spin a 2"
The relative frequency for the event of spin a 2 is P = 0.16
Given data ,
Let the total number of times the event occurs = 50
Now , the number of times the spin of 2 occurs = 8 times
So , the relative frequency is given by
Relative Frequency = Subgroup frequency / Total frequency
P = 8 / 50
P = 0.16
Hence , the relative frequency is 0.16
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The complete question is attached below :
If the table shows the results for spinning the spinner 50 times. What is the relative frequency for the event "spin a 2"
During a survey of 240 people who own cats, 188 people preferred cat food A to cat food B. Based on these results, in the second survey of 60 people, how many people can be predicted to prefer cat food A?
Based on the first survey results, we can predict that around 47 people in the second survey of 60 people will prefer cat food A over cat food B.
Based on the results of the first survey, 188 out of 240 people preferred cat food A over cat food B. To predict the preference for cat food A in the second survey, we can calculate the proportion of people who preferred cat food A in the first survey and apply it to the sample size of the second survey.
First, find the proportion of people preferring cat food A in the first survey:
Proportion = (Number of people preferring cat food A) / (Total number of people surveyed)
Proportion = 188 / 240
Proportion ≈ 0.7833
Now, apply this proportion to the second survey's sample size of 60 people:
Predicted preference = Proportion × (Sample size of the second survey)
Predicted preference = 0.7833 × 60
Predicted preference ≈ 47
Therefore, based on the first survey results, we can predict that around 47 people in the second survey of 60 people will prefer cat food A over cat food B.
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integral of e to -x cos2x from 0 to infinity
The integral value of [tex]e ^{-x cos2x}[/tex] under the given condition is 1/4.
The integral of [tex]e ^{-x cos2x}[/tex] from 0 to infinity can be solved using integration by parts.
Let u = cos(2x) and dv = [tex]e^{(-x)dx}[/tex].
Then du/dx = -2sin(2x) and v = [tex]-e^{(-x)}[/tex].
Using integration by parts, we get:
∫[tex]e^{(-x)cos(2x)dx}[/tex] = [tex]-e^{(-x)cos(2x)/2}[/tex] + ∫[tex]e^{(-x)sin(2x)dx}[/tex]
Now, let u = sin(2x) and dv = [tex]e^{(-x)dx}[/tex]
Then du/dx = 2cos(2x) and v =[tex]-e^{(-x)}[/tex].
Using integration by parts again, we get:
∫[tex]e^{(-x)cos(2x)dx}[/tex] = [tex]-ex^{(-x)cos(2x)/2}[/tex] - [tex]e^{(-x)sin(2x)/4}[/tex] + C
here
C = constant of integration.
Therefore, the integral of [tex]e^{(-x)cos(2x)}[/tex] from 0 to infinity is
= [tex]-e^{(0)(cos(0))/2}[/tex] - [tex]e^{(0)(sin(0))/4 }[/tex]+[tex]e^{ (-infinity)(cos(infinity))/2}[/tex] + [tex]e^{(-infinity)(sin(infinity))/4.}[/tex]
Simplifying this expression gives us:
∫[tex]e^{(-x)cos(2x)dx }[/tex]
= 1/4
The integral value of [tex]e ^{-x cos2x}[/tex] under the given condition is 1/4.
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Jocelyn is designing a bed for cactus specimens at a botanical garden. The total area can be
modeled by the expression 2x2 + 7x +3, where x is in feet.
Suppose in one design the length of the cactus bed is 4x, and in another, the length is 2x + 1. What are the widths of
the two designs?
The width of the first design is -2.5 feet and the width of the second design is 0.5 feet.
How to calculate thw widthFor the first design, where the length is 4x, the total area is:
2(4x)² + 7(4x) + 3 = 32x² + 28x + 3
To find the width, we can divide the total area by the length:
width = (32x² + 28x + 3) / 4x
width = 8x + 7 + 3/4x
For the second design, where the length is 2x + 1, the total area is:
2(2x + 1)² + 7(2x + 1) + 3 = 8x² + 23x + 5
width = (8x² + 23x + 5) / (2x + 1)
width = 4x + 2 + 1/(2x + 1)
For the first design:
width = 8(-1/2) + 7 + 3/4(-1/2) = -2.5 feet
For the second design:
width = 4(-1/2) + 2 + 1/(2(-1/2) + 1) = 0.5 feet
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An ancient ruler is 9 inches long. The only marks that remain are at 1 inch and 2 inches, 9 inches and one mark. It is possible to draw line segments of the whole number lengths from 1 to 9 inches without moving the ruler. What inch number is on the other mark
If the only marks that remain are at 1 inch and 2 inches, 9 inches and one mark, the missing mark corresponds to the number 6.
This is a classic problem in recreational mathematics, also known as the "burnt ruler problem". To solve it, we need to think creatively and use rational expressions and equations.
First, we note that the distance between the two marks is 9-2=7 inches. We can imagine the ruler as a number line from 0 to 9, where the two marks correspond to the numbers 1 and 2. We want to find the other mark, which corresponds to some number x between 2 and 9.
Next, we observe that we can use the ruler to construct line segments of length 1, 2, 3, 4, 5, 6, 7, 8, and 9 by adding or subtracting these lengths using the two marks as reference points. For example, we can construct a line segment of length 3 by starting at the mark at 2, moving 1 inch to the right, and then moving 2 more inches to the right.
Now, we notice that any line segment of length n can be expressed as a difference of two line segments of smaller lengths. For example, a line segment of length 7 can be expressed as the difference between a line segment of length 2 and a line segment of length 5. More generally, we can write:
n = a - b
where a and b are integers between 1 and n-1.
Using this observation, we can try to find a way to express the length of the missing segment x as a difference of two integers between 1 and 7. We can start by listing all possible values of a and b:
a=2, b=1: 2-1=1
a=3, b=1: 3-1=2
a=4, b=1: 4-1=3
a=5, b=1: 5-1=4
a=6, b=1: 6-1=5
a=7, b=1: 7-1=6
a=3, b=2: 3-2=1
a=4, b=2: 4-2=2
a=5, b=2: 5-2=3
a=6, b=2: 6-2=4
a=4, b=3: 4-3=1
a=5, b=3: 5-3=2
a=6, b=3: 6-3=3
a=5, b=4: 5-4=1
a=6, b=4: 6-4=2
a=6, b=5: 6-5=1
We notice that the only values of a and b that work are 6 and 1, respectively, since 6-1=5, which is the length of the line segment between the two marks that was not given.
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What is the volume of a cone with a radius of 2.5 and a height of 4 answer in terms of pi
options:
-20 5/6π
-25π
-8 1/3π
-15 5/8π
Answer:
Sure, I can help you with that! The volume of a cone with a radius of 2.5 and a height of 4 is (1/3)*pi*(2.5^2)*4. This equals approximately 26.18 cubic units.
A small country emits 103,000 kilotons of carbon dioxide per year. In a recent global agreement, the country agreed to cut its carbon emissions by 5% per year for the next 14 years. In the first year of the agreement, the country will keep its emissions at 103,000 kilotons and the emissions will decrease 5% in each successive year. How many kilotons of carbon dioxide would the country emit over the course of the 14 year period, ?
The total amount of carbon dioxide emitted over the 14-year period is 879,594.08 kilotons.
The small country emits 103,000 kilotons of carbon dioxide per year and agreed to cut its emissions by 5% per year for the next 14 years, starting with 103,000 kilotons in the first year.
To find the total amount of carbon dioxide emitted over the 14-year period, follow these steps:
1. Determine the initial amount of emissions: 103,000 kilotons in the first year.
2. Calculate the reduction rate per year: 5% or 0.05.
3. Calculate the total emissions for each year using the formula:
Emissions = Initial Emissions * (1 - Reduction Rate)^Year
4. Sum up the emissions for all 14 years.
Hence,
Year 1: 103,000 * (1 - 0.05)^0 = 103,000 kilotons
Year 2: 103,000 * (1 - 0.05)^1 = 97,850 kilotons
Year 3: 103,000 * (1 - 0.05)^2 = 93,057.50 kilotons
...
Year 14: 103,000 * (1 - 0.05)^13 = 56,516.87 kilotons
Now, add up the emissions for all 14 years:
Total Emissions = 103,000 + 97,850 + 93,057.50 + ... + 56,516.87 = 879,594.08 kilotons.
Therefore, the total amount of carbon dioxide emitted over the 14-year period is approximately 879,594.08 kilotons.
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researchers studying the effect of antibiotic treatment for acute sinusitis compared to symptomatic treatments randomly assigned 166 adults diagnosed with acute sinusitis to one of two groups: treatment or control. study participants received either a 10-day course of amoxicillin (an antibiotic) or a placebo similar in appearance and taste. the placebo consisted of symptomatic treatments such as acetaminophen, nasal decongestants, etc. at the end of the 10-day period, patients were asked if they experienced improvement in symptoms. the distribution of responses is summarized below.3 self-reported improvement in symptoms yes no total treatment 66 19 85 group control 65 16 81 total 131 35 166 (a) what percent of patients in the treatment group experienced improvement in symptoms? (b) what percent experienced improvement in symptoms in the control group? (c) in which group did a higher percentage of patients experience improvement in symptoms? (d) your findings so far might suggest a real difference in effectiveness of antibiotic and placebo treatments for improving symptoms of sinusitis. however, this is not the only possible conclusion that can be drawn based on your findings so far. what is one other possible explanation for the observed difference between the percentages of patients in the antibiotic and placebo treatment groups that experience improvement in symptoms of sinusitis?
77.6% of patients in the antibiotic treatment group experienced improvement in symptoms, while 80.2% of patients in the placebo group experienced improvement. The control group had a slightly higher percentage of improvement. The placebo effect could have contributed to the difference in improvement rates.
The percent of patients in the treatment group who experienced improvement in symptoms is 77.6% ((66/85) x 100). The percent of patients in the control group who experienced improvement in symptoms is 80.2% ((65/81) x 100).
The control group had a higher percentage of patients experience improvement in symptoms (80.2%) compared to the treatment group (77.6%).
One possible explanation for the observed difference between the percentages of patients in the antibiotic and placebo treatment groups that experience improvement in symptoms of sinusitis is that the placebo effect may have played a role.
The placebo effect is a phenomenon in which patients who receive a treatment that is not expected to have a therapeutic effect experience an improvement in their symptoms due to their belief in the treatment.
Therefore, the symptomatic treatments provided in the placebo group may have led to an improvement in symptoms, even though they did not receive an antibiotic.
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The price of a calculator is decreased by
31
%
and now is
$
189. 6. Find the original price
Answer:
274.78
Step-by-step explanation:
Let's call the original price "x".
We know that the price decreased by 31%, so the new price is
100% - 31% = 69% of the original price:
0.69x = 189.6
To solve for x, we can divide both sides by 0.69:
x = 189.6 / 0.69
Simplifying this expression, we get:
x ≈ 274.78
Therefore, the original price was approximately $274.78.
1. Solve the following set of equations by using substitution or elimination. (1 point)
[2x+y=1
2x+3y=-41
O (9,-18)
O (10,-19.5)
O (11,-21)
O (12,-22)
Answer:
C. (11,-21)
Step-by-step explanation:
Elimination
2x+y=1....(1)
2x+3y=-41....(2)
You can eliminate x in this case. (2)-(1)
2y=-42
y=-21.....(3)
You can substitute (3) in (1)
2x-21=1
2x-21+21=1+21
2x=22
x=11
Final answer: (11, -21)
I am wondering what’s 75% of 188
I know 50% of 188 is 94 and 25% is 47
Answer: 141
Step-by-step explanation: 188 x 75% = 141
Answer:
141
Step-by-step explanation:
I looked it up.
A man is sitting at a park bench 92 feet away from an office building. The medical examiner and other
investigators have determined that the bullet entered the man's head at an angle of 26° and at about 3. 7 feet
off the ground. If the man was shot from the office building, about how high off of the ground was the shooter
located?
The shooter was located approximately 36.15 feet off the ground.
How high was the shooter located?We can use trigonometry to solve for the height of the shooter.
First, we need to find the horizontal distance from the shooter to the man on the park bench. We can use the angle of 26° and the distance of 92 feet to calculate this distance:
horizontal distance = 92 feet * cos(26°)
horizontal distance = 82.33 feet
Next, we can use the height of 3.7 feet and the horizontal distance of 82.33 feet to find the height of the shooter:
tan(26°) = height difference / horizontal distance
height difference = horizontal distance * tan(26°)
height difference = 82.33 feet * tan(26°)
height difference = 36.15 feet
Therefore, the shooter was located approximately 36.15 feet off the ground.
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What is the magnitude of the electrostatic force exerted by
sphere a on sphere b?
2. 0 m-
а
b
+1. 0 x 10-6c
-1. 6 x 10-60
We are not given the distance between the spheres, so we cannot calculate the force without that information.
To calculate the electrostatic force between the two charged spheres, we can use Coulomb's law, which states that the magnitude of the electrostatic force between two point charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
Mathematically, we can express this as:
F = k * (q1 * q2) / r^2
Where F is the electrostatic force, k is Coulomb's constant (9 x 10^9 N m^2/C^2), q1 and q2 are the charges of the spheres, and r is the distance between their centers.
We are given the charges of the two spheres: sphere A has a charge of +1.0 x 10^-6 C, and sphere B has a charge of -1.6 x 10^-6 C.
However, we are not given the distance between the spheres, so we cannot calculate the force without that information.
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A researcher collected the number of letters in each of 200 first names. The data are found to be normally distributed with a mean of 5. 82 and a standard deviation of 1. 43.
What percentage of first names have seven letters or less?
79. 4%
82. 5%
84. 1%
99. 8%
If a researcher collected the number of letters in each of 200 first names, approximately 79.4% of first names have seven letters or less. Therefore, the correct answer is 79.4%.
To find the percentage of first names with seven letters or less, we will use the mean (5.82) and standard deviation (1.43) of the normally distributed data. We will calculate the z-score for a name with seven letters:
z = (7 - 5.82) / 1.43
z ≈ 0.83
Now, using a z-table or a calculator that can compute the cumulative distribution function (CDF) of a standard normal distribution, we find the probability associated with the z-score:
P(z ≤ 0.83) ≈ 79.4%
So, approximately 79.4% of first names have seven letters or less. The correct answer is 79.4%.
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Find the derivative y = cot (sen x/X + 14)
To find the derivative of y = cot(sen x/X + 14), we need to use the chain rule and the derivative of cot(x) which is -csc^2(x).
First, we let u = sen x/X + 14.
Then, we can rewrite y as y = cot(u).
Using the chain rule, the derivative of y with respect to x is:
dy/dx = dy/du * du/dx
To find dy/du, we need to use the derivative of cot(u) which is -csc^2(u).
So,
dy/du = -csc^2(u)
To find du/dx, we need to use the quotient rule.
Let v = X, so u = sen x/v + 14.
Then,
du/dx = (v*cos x - sen x * 0)/(v^2)
du/dx = cos x/v
Now we can substitute the values of dy/du and du/dx:
dy/dx = dy/du * du/dx
dy/dx = (-csc^2(u)) * (cos x/v)
But u = sen x/X + 14, so we substitute this in:
dy/dx = (-csc^2(sen x/X + 14)) * (cos x/X)
Therefore, the derivative of y = cot(sen x/X + 14) is
dy/dx = (-csc^2(sen x/X + 14)) * (cos x/X).
To find the derivative of y = cot(sen(x)/(x + 14)), we will use the quotient rule and the chain rule.
Let u = sen(x) and v = x + 14, then y = cot(u/v).
First, find the derivatives of u and v:
du/dx = cos(x) (since the derivative of sen(x) is cos(x))
dv/dx = 1 (since the derivative of x is 1, and the derivative of a constant is 0)
Now, apply the quotient rule for cotangent:
d(cot(u/v))/dx = -1/(sin^2(u/v)) * (du/dv - u*dv/dx) / (v^2)
Substitute the expressions for u, v, du/dx, and dv/dx:
dy/dx = -1/(sin^2(sen(x)/(x + 14))) * ((cos(x)*(x + 14) - sen(x)*1) / (x + 14)^2)
This is the derivative of y with respect to x.
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I would like to see the process steps of solving this as well please! Thank you!
You must begin to brake 234643.2 feet from the intersection.
What is stopping distance?In Mathematics and Science, stopping distance can be defined as a measure of the distance between the time when a brake is applied by a driver to stop a vehicle that is in motion and the time when the vehicle comes to a complete stop (halt).
Based on the information provided above, the speed of this car is represented by the following equation;
s = √(30fd)
Where:
f is the coefficient of friction.d is the stopping distance (in feet).By substituting the given parameters, we have:
20 = √(30(0.3)d)
400 = 9d
d = 400/9
d = 44.44
Conversion:
1 mile = 5,280 feet.
44.44 miles = 234643.2 feet.
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For the function f(x)= 4x³ – 36x² +1.
(a) Find the critical numbers of f(if any) (b) Find the open intervals where the function is increasing or decreasing.
(a) The critical numbers are x = 0 and x = 6.
(b) The function is increasing on the interval (0, 6) and decreasing on the intervals (-∞, 0) and (6, ∞).
How to find the critical numbers of f(x)?(a) To find the critical numbers of f(x), we need to find the values of x where f'(x) = 0 or f'(x) does not exist.
f'(x) = 12x² - 72x
Setting f'(x) = 0, we get:
12x² - 72x = 0
12x(x - 6) = 0
So, the critical numbers are x = 0 and x = 6.
How to determine where the function is increasing or decreasing?(b) To determine where the function is increasing or decreasing, we need to examine the sign of f'(x) on different intervals.
For x < 0, f'(x) = 12x² - 72x < 0, which means the function is decreasing on (-∞, 0).
For 0 < x < 6, f'(x) = 12x² - 72x > 0, which means the function is increasing on (0, 6).
For x > 6, f'(x) = 12x² - 72x < 0, which means the function is decreasing on (6, ∞).
So, the function is increasing on the interval (0, 6) and decreasing on the intervals (-∞, 0) and (6, ∞).
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what’s the inverse of f(x) for f(x)=4x-3/7
Answer:
x/4 + 3/28 = y
Step-by-step explanation:
To find the inverse, switch the x's and y's (note that f(x) is y) and solve for y:
x = 4y - 3/7
x + 3/7 = 4y
x/4 + 3/28 = y
Answer:
−1(x) = 3√2(x+7) 2 f - 1 (x) = 2 (x + 7) 3 2 is the inverse of f (x) = 4x3 − 7 f (x) = 4 x 3 - 7.
2x+y=18
x+2y=-6
Solve the systems of equations
Answer:
(14, -10)
Step-by-step explanation:
Let X = the score out of 3 points on a randomly selected quiz in a Prob
& Stat course. The table gives the probability distribution of X.
Value
0
1
2
3
Probability
0. 05
0. 15
0. 60
A) Find the missing value for P(X = 1) in the probability distribution.
B) P(X 2 2) =
C) P(X > 2) =
D) The probability of "At least 2" is equivalent to
A. The missing value for P(X = 1) is 0.20.
B. The value of P(X ≤ 2) is 0.85.
C. The value of P(X > 2) is 0.15.
D. The probability of "At least 2" is equivalent to P(X >= 2), which is 0.75.
In probability theory, a probability distribution is a function that assigns probabilities to each possible value of a random variable.
In this Problem, we have a probability distribution for the score on a quiz, with X being the random variable and the table providing the probability of each possible score. In this answer, we will use the given probability distribution to answer the questions posed.
A) Find the missing value for P(X = 1) in the probability distribution.
To find the missing value for P(X = 1), we need to use the fact that the sum of the probabilities for all possible values of X must be equal to 1. Therefore, we can set up an equation:
P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) = 1
Substituting in the given probabilities, we get:
0.05 + P(X = 1) + 0.60 + 0.15 = 1
Simplifying, we get:
P(X = 1) = 0.20
Therefore, the missing value for P(X = 1) is 0.20.
B) P(X ≤ 2) =
To find P(X ≤ 2), we need to add up the probabilities of X being less than or equal to 2. This is equivalent to:
P(X ≤ 2) = P(X = 0) + P(X = 1) + P(X = 2)
Substituting in the given probabilities, we get:
P(X ≤ 2) = 0.05 + 0.20 + 0.60 = 0.85
Therefore, P(X ≤ 2) is 0.85.
C) P(X > 2) =
To find P(X > 2), we need to add up the probabilities of X being greater than 2. This is equivalent to:
P(X > 2) = P(X = 3)
Substituting in the given probabilities, we get:
P(X > 2) = 0.15
Therefore, P(X > 2) is 0.15.
D) The probability of "At least 2" is equivalent to P(X >= 2)
To find the probability of "At least 2," we need to add up the probabilities of X being greater than or equal to 2. This is equivalent to:
P(X ≥ 2) = P(X = 2) + P(X = 3)
Substituting in the given probabilities, we get:
P(X ≥ 2) = 0.60 + 0.15 = 0.75
Therefore, the probability of "At least 2" is equivalent to P(X ≥ 2), which is 0.75.
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In a certain high school, a survey revealed the mean amount of bottled water consumed by students each day
was 153 bottles with a standard deviation of 22 bottles. Assuming the survey represented a normal distribution,
what is the range of the number of bottled waters that approximately 68. 2% of the students drink?
The range of the number of bottled waters that approximately 68. 2% of the students drink is between 131 and 175 bottled waters per day.
The range of the number of bottled waters that approximately 68.2% of the students drink can be calculated using the empirical rule, also known as the 68-95-99.7 rule.
According to this rule, for a normal distribution:
Approximately 68.2% of the data falls within one standard deviation of the mean
Approximately 95.4% of the data falls within two standard deviations of the mean
Approximately 99.7% of the data falls within three standard deviations of the mean
falls within a certain number of standard deviations from the mean
Since we are interested in the range of values that approximately 68.2% of the students drink, we can start by calculating one standard deviation from the mean:
One standard deviation = mean ± standard deviation
= 153 ± 22
= 131 to 175
This answer is based on the empirical rule, which is a useful tool for understanding the spread of data in a normal distribution. It tells us that for a normal distribution, a certain percentage of the data
Therefore, approximately 68.2% of the students drink between 131 and 175 bottled waters per day.
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Which describes the intersection of the plane and the solid? a: triangleb: rectanglec: parallelogram d: trapezoid
The solid being referred to is a cuboid and the plane that intersects it creates a triangular shape, then the intersection of the plane and the solid would be described as Triangle. Option A is the correct answer.
If a cuboid is being sliced by a plane that creates a triangular shape within the solid, then the intersection of the plane and the solid would take the form of a triangle.
However, it's important to note that this answer only applies to the specific scenario in which a cuboid is being sliced and the resulting intersection appears triangular.
In general, the intersection of a plane and a solid could take on a variety of shapes, including rectangles, parallelograms, or trapezoids, depending on the specific solid and plane in question.
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Find the measure of the angle indicated. Assume that the lines which appear tangent are tangent.
Answer:
65°-----------------------------
The measure of the angle formed outside of circle is half the difference of major and minor arc measures.
It means the measure of angle T is:
m∠T = 1/2((360 - 115) - 115) = 180 - 115 = 65The measure of the angle indicated in the diagram is 50 degrees.
What is Tangent ?
In geometry, the tangent is a trigonometric function that relates the opposite side and adjacent side of a right triangle. More specifically, for a given angle θ, the tangent of θ (denoted by tan θ) is defined as the ratio of the length of the opposite side to the length of the adjacent side of the right triangle containing that angle.
In the given figure, the two lines are tangent to the circle with center O. Let's call the point where the two lines intersect point P.
We know that the angle formed by a tangent line and a radius of a circle is always 90 degrees. Therefore, we can draw a radius OP from the center of the circle to point P and we know that angle POQ (where Q is the point where the radius intersects the circle) is 90 degrees.
We also know that angle OPQ is 40 degrees (as given in the diagram).
Since the sum of the angles in a triangle is 180 degrees, we can find angle OQP as follows:
angle OQP = 180 - angle OPQ - angle POQ
= 180 - 40 - 90
= 50 degrees
Therefore, the measure of the angle indicated in the diagram is 50 degrees.
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Kristen is excited for her first overnight camping trip with her scout troop. the troop needs to take some parent chaperones with the on the trip. for a trip with s scouts, they need at least s/5 chaperones. there are 15 scouts going on the camping trip.
They may choose to bring 4 chaperones or even more depending on their preferences and logistical constraints.
How many chaperones are needed for the camping trip with 15 scouts?For the camping trip with 15 scouts, they will need at least 15/5 = 3 chaperones.
However, it's possible that they may want to have more than the minimum number of chaperones for additional supervision and safety. The number of chaperones they choose to bring may also depend on the ratio of chaperones to scouts that they want to maintain.
So, they may choose to bring 4 chaperones (1 chaperone for every 3.75 scouts), 5 chaperones (1 chaperone for every 3 scouts), or even more depending on their preferences and logistical constraints.
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The value of an investment at simple interest is given by the formula
a
=
p
+
p
r
t
.
a is the final value after t years at the interest rate r (as a decimal) if the initial amount p is invested.
solve for t and solve for how long $200 must be invested at 8% interest to reach a value of $248?
It would take 15 years of investing $200 at 8% interest to reach a value of $248.
To solve for t, we can rearrange the formula:
a = p + prt
a - p = prt
t = (a - p) / (pr)
To solve for how long $200 must be invested at 8% interest to reach a value of $248, we can plug in the given values into the formula and solve for t:
a = 248
p = 200
r = 0.08
t = (a - p) / (pr)
t = (248 - 200) / (200 * 0.08)
t = 15
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