Work done to pump the kerosene is equal to W = 126106 ft-lbs
"Information available from the question"
Height of the cylinder = 7 ft.
Diameter of cylinder = 8 ft.
Radius of the cylinder = 4 ft
Weight of the kerosene = 51.2 lb/ft³
Calculating the volume of cylinder for dy height
dV = π r² dy
dV = π 4² dy
dV = 16π dy
Force acting on the cylinder
dF = W x dV
dF = 51.2 x 16πdy...….(1)
We know
Work done = Force x displacement
Displacement = 7 - y
dW = 51.2 x 16πdy x (7 - y)
Now, integrating both side
[tex]\int\limits dW = \int\limits^7_0 {819.2\pi(7-y) } \, dy[/tex]
[tex]W = [819.2\pi (7-y)^2]^0_7[/tex]
By solving, we get
W = 126106 ft-lbs
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one of the features of the interactive model of communication that is discussed in chapter one by turner and west which makes it different from the linear model that was based on shannon and weaver's mathematical model of communication is:
One of the features of interactive model of communication is "Feedback where a recipient of communication such as a listener provides a response to a message, often to indicate understanding after a message has been received."
The Feedback is one of the key features that makes the Interactive Model of Communication different from the Linear Model based on Shannon and Weaver's mathematical model .
The Feedback allow a reciprocal exchange of messages between the sender and receiver, making communication a dynamic and interactive process.
In the Interactive Model, the feedback enables the receiver to provide feedback to the sender, which allows clarification, confirmation, and correction of messages.
The given question is incomplete , the complete question is
One of the features of the interactive model of communication that is discussed by Turner and West which makes it different from the linear model that was based on Shannon and weaver's mathematical model of communication is ?
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Find the values of a,b, and c.
Answer:
see attached
Step-by-step explanation:
3 triangles
3 variables
so you'll get 3 equations
memorize right triangle's property
short side 1 ² + short side 2 ² = long side ²
see attached
how many gallons of an 18%-salt solution must be mixed with 7 gallons of a 30%-salt solution to obtain a 25%-salt solution?
We need -1.94 gallons of 18%-salt solution to be mixed with 7 gallons of 30%-salt solution to obtain a 25%-salt solution.
The formula used to calculate the number of gallons of 18%-salt solution needed to be mixed with 7 gallons of 30%-salt solution to obtain a 25%-salt solution is:
V1C1 + V2C2 = V3C3
Where:
V1 = Volume of 18%-salt solution
C1 = Concentration of 18%-salt solution
V2 = Volume of 30%-salt solution
C2 = Concentration of 30%-salt solution
V3 = Volume of 25%-salt solution
C3 = Concentration of 25%-salt solution
Plugging in the given values, we get:
V1C1 + 7(0.30) = V3(0.25)
Simplifying the equation, we get:
V1(0.18) + 2.1 = 0.25V3
Subtracting 2.1 from both sides, we get:
V1(0.18) = 0.25V3 - 2.1
Dividing both sides by 0.18, we get:
V1 = (0.25V3 - 2.1) / 0.18
Substituting V3 with 7, we get:
V1 = (1.75 - 2.1) / 0.18
Simplifying, we get:
V1 = -0.35 / 0.18
Therefore,
V1 = -1.94 gallons
Hence, we need -1.94 gallons of 18%-salt solution to be mixed with 7 gallons of 30%-salt solution to obtain a 25%-salt solution.
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Find the polar coordinates of the rectangular point. (0,3)
In Cartesian or rectangular coordinate system we represent any point using the ordered pair (x,y) . Similarly in polar coordinate system we represent any point using the ordered pair (r,θ), where r is the distance from origin and θ is the angle made by the line joining origin and the point with x-axis measured in anti-clockwise direction.
Here is the graph y = f ( x ) What are the coordinates of the point shown after the transformation f ( x + 1 ) ?
The coordinate point of f(x + 1) will shift 1 unit to the left along the x-axis.
(x , y) ⇒ (x - 1, y).
What are some function transformations?Suppose we have a function f(x).
f(x) ± d = Vertical upshift/downshift by d units (x, y ±d).
f(x ± c) = Horizontal left/right shift by c units (x - + c, y).
(a)f(x) = Vertical stretch for a > 0, vertical shrink a < 0. (x, ay).
f(bx) = Horizonatal compression b > 0, horizontal stretch for b < 0. (bx , y).
f(-x) = Reflection over y-axis, (-x, y).
-f(x) = Reflection over x-axis, (x, -y).
Let, y = f(x) = 3x.
Now, After the transformation f(x + 1) = g(x),
g(x) = 3(x + 1).
This is a horizontal transformation by 1 unit to the left.
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Determine which system will produce infinitely many solutions. −6x 3y = 18 4x − 3y = 6 2x 4y = 24 6x 12y = 36 3x − y = 14 −9x 3y = −42 5x 2y = 13 −x 4y = −6
To determine if a system of equations has infinitely many solutions, we can use the method of elimination or substitution to solve for one variable in one equation and substitute it into the other equation.
If the resulting equation is an identity, then the system has infinitely many solutions.
In this case, we can solve for one variable in each equation and substitute the solution into the other equation to check for Consistency. If the resulting equation is an identity, then the system has infinitely many solutions.
After solving each system individually, it appears that the system of equations 4x - 3y = 6 and 3x - y = 14 produces infinitely many solutions. This is because when we substitute the solution for x from the first equation into the second equation, we get:
3(4) - y = 14
12 - y = 14
y = 2
This means that for any value of x that's Satisfies the first equation, y will always equal 2. Therefore, the two equations represent the same line in the xy-plane, and the system has infinitely many solutions.
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Solve for x on the diagram below
The value of x in the angle is 56 degrees
How to detrmine the value of xFrom the question, we have the following parameters that can be used in our computation:
The figure
On the figure, we have teh following equation
64 + x + 60 = 180
The above is by the angle on a straight line theorem
So, we have
124 + x = 180
Evaluate the like terms
x = 56
Hence, the value of x is 56
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Answer:
x = 56
Step-by-step explanation:
64 + x + 60 = 180
124 + x = 180
x = 56
Factor the expression completely. -12x - 24
Answer:
- 12(x + 2)
Step-by-step explanation:
- 12x - 24 ← factor out the common factor of - 12 from each term
= - 12(x + 2)
Question is in image
The radius of the spherical part is 3 inches and the length of the tube is 21 cm.
What is the volume of a cylinder?The capacity of a cylinder, which determines how much material it can hold, is determined by the cylinder's volume. There is a formula for the volume of a cylinder that is used in geometry to determine how much of any quantity, whether liquid or solid, can be immersed in it uniformly.
Given that the volume when the water is fully dipped is 4554 / 7 cm³. The volume when the length is 9 cm empty is 396 cm³.
The two equations can be formed as below:-
4554 / 7 = πr²l + (2/3)πr³
396 = πr²( l - 9 ) + (2/3)πr³
Subtract the second equation from the first,
( 4554 / 7 ) - 396 = 9πr²
9πr² = 254.5
r² = 9
r = 3 cm
The length will be calculated as:-
4554 / 7 = πr²l + (2/3)πr³
4554 / 7 = π( 3 )²l + (2/3)π(3)³
l = 21 cm
Therefore, the tube's length is 21 cm, and the spherical part's radius is 3 inches.
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A sample was taken of dogs at a local dog park on two random days. The counts are displayed on the unit below. if there are an estimated of 50 dogs at the dog park at any given time, which proportion could be used to find the average number of shepherd mixes at any given time?
sample 1
Labrador Retriever 4
Shepherd Mix 7
Chihuahua 3
Poodle 1
Australian Cattle Dog 2
sample 2
Labrador Retriever 5
Shepherd Mix 9
Chihuahua 5
Poodle 2
Australian Cattle Dog 4
1. 8/21 = x/50
2. 16/21 = x/50
3. 8/50 = x/42
4. 7/9 = x/50
The proportion that could be used to find the average number of shepherd mixes at any given time is given as follows:
4. 7/9 = x/50
How to obtain the proportion?The proportion is obtained as the ratio between two amounts, dividing the amount a by the amount b.
The number of Sheperd Mix in each sample is given as follows:
7 and 9.
Hence the first part of the ratio is of 50, hence:
7/9.
As the total number is of 50, the second part is given as follows:
x/50.
Hence the proportional equation is given as follows:
7/9 = x/50.
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what is y-1/2x=-1
and what is y=1/2x+4
Answer:
No solutions
Step-by-step explanation:
y - 1/2x = -1
y = 1/2x + 4
Move 1/2x over to other side for 2nd equation
y - 1/2x = 4
You can tell that if you plot the lines on a graph, there would be no intersecting points because the line is parallel, meaning there are no solutions.
Which function represents this graph?
a. f(x)=10x
b.
The value of the exponential function is f ( x ) = 10ˣ - 4
What are the laws of exponents?When you raise a quotient to a power you raise both the numerator and the denominator to the power. When you raise a number to a zero power you'll always get 1. Negative exponents are the reciprocals of the positive exponents.
The different Laws of exponents are:
mᵃ×mᵇ = mᵃ⁺ᵇ
mᵃ / mᵇ = mᵃ⁻ᵇ
( mᵃ )ᵇ = mᵃᵇ
mᵃ / nᵃ = ( m / n )ᵃ
m⁰ = 1
m⁻ᵃ = ( 1 / mᵃ )
Given data ,
Let the exponential equation be represented as A
Now , the value of A is
Substituting the values in the equation , we get
f ( x ) = 10ˣ - 4 be equation (1)
Now , the exponential function is when it is raised to the power of x
So , the function is close to -4 because 4 is deducted from the function
Therefore , the value of A is 10ˣ - 4 and the graph is plotted
Hence , the exponential function is f ( x ) = 10ˣ - 4
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9. Terrell bought an MP3 player. He spent the rest of his money on an
Internet music subscription for $25.95. If he started with $135, how much
was the MP3 player? Write and solve an equation using a bar diagram.
The MP3 player cost is $109.05.
What is Equation?Two or more expressions with an Equal sign is called as Equation.\
Let us consider the cost of the MP3 player "x".
Terrell started with $135 and spent $25.95 on the Internet music subscription,
so he had 135 - 25.95 = $109.05 left to spend on the MP3 player.
The equation to solve for x is:
x + 25.95 = 135
Subtract 25.95 on both sides
x = 135 - 25.95
x = 109.05
Hence, the MP3 player cost is $109.05.
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two airplanes leave chicago at the same time and fly in opposite directions. if one travels at 430 miles per hour and the other at 570 miles per hour, how long will it take for them to be 2000 miles apart?
The time taken by the planes when they are 2000 miles apart is 2 hours.
We all know that formula of distance, speed and time is given by distance = speed*time or time = distance/speed
Let x be the number of hours that the two planes will be 2000 miles apart.
Let 430x be the distance traveled by the first plane at 430 miles per hour
and 570x be the distance traveled by the second plane at 570 miles per hour.
here, 430x +570x =2000 is the total distance travelled by the first plane and the second plane
Solving yields the following steps:
1000x = 2000
Dividing 1000 to both sides of the above equation, we get
1000x/1000=2000/1000
So the value of x will be equivalent to 2
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a grade school boy has five blue and four white marbles in his left pocket and four blue and five white marbles in his right pocket. if he transfers one marble at random from his left to his right pocket, what is the probability of his then drawing a blue marble from his right pocket?
The probability of his then drawing a blue marble from his right pocket is
0.456 or 45.6 % by using conditional probability theorem.
conditional probability, the probability that an event occurs given the knowledge that another event has occurred.
from the given information : considering for notations, let BL, BR, and WL denote drawing a blue marble from the left pocket, a blue marble from the right pocket, and a white marble from the left pocket, respectively. By the Law of Total Probability,
P(BR) = P(BL ∩ BR)+ P(WL ∩ BR)
= P(BL)P(BR|BL)+ P(WL)P(BR|WL)
= ( 5/9)(5/10) + (4/9)(4/10) = (41/90)
= 0.456
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j-28 = 88
j = pls help me
Maybe my brain is broke
The equation the line is, y = -3/2 *x -1
What is a straight line?A straight line is an endless one-dimensional figure that has no width. It is a combination of endless points joined both sides of a point and has no curve.
Here, we have ,
from the given graph we get,
the line is passing through the points (0,-1)& ( -2,2)
So, by using the formula of equation of straight line of two-point form, we get,
(y-y_1)/(x-x_1 )=(y_2-y_1)/(x_2-x_1 )
now, by solving we get,
-3x-2y=2
Hence, the required equation is, y = -3/2 *x -1
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a+3 1/4=5 2/9
(In fraction pls)
Answer:
Step-by-step explanation:
a + 3 1/4 = 5 2/9
-3 1/4 -3 1/4
a = 1 35/36
Jacqueline reads 25 pages every night. Which graph correctly displays y, the total number of pages that Jacqueline has read after x days?
On a coordinate plane, a graph titled Total Pages Jacqueline Has Read has days on the x-axis and Pages on the y-axis. A horizontal line is at y = 25.
On a coordinate plane, an exponential curve graph titled Total Pages Jacqueline Has Read has days on the x-axis and Pages on the y-axis.
On a coordinate plane, a graph titled Total Pages Jacqueline Has Read has days on the x-axis and Pages on the y-axis. A line goes through points (0, 25) and (13, 40).
On a coordinate plane, a graph titled Total Pages Jacqueline Has Read has days on the x-axis and Pages on the y-axis. A line goes through points (1, 25) and (2, 50).
The correct answer is) D. Because on the graph you can see that it increases by 25 each day which follows the equation Y=25x.
What is an expression?A mathematical expression is made up of a statement, at least two integers or variables, and one or more arithmetic operations. This mathematical operation enables the multiplication, division, addition, or subtraction of numbers.
Jacqueline reads 25 pages every night, as is given. After x days, Jacqueline has read the following number of pages, which is represented by y.
given that she starts with 0 pages and reads 25 pages every day.
As a result, there is a proportionate relationship between the total number of pages read and the number of days.
she reads 25 pages a night Meaning that the total number of pages Jacqueline has read (Variable Y) = 25 pages a night (x)
Therefore, On a coordinate plane, a graph titled Total Pages Jacqueline Has Read has days on the x-axis and Pages on the y-axis. A line goes through points (1, 25) and (2, 50).
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Answer:
d
Step-by-step explanation:
because
the slope of a fairly flat upward-sloping line will be a a. large negative number. b. small negative number. c. small positive number. d. large positive number.
The slope of a fairly flat upward-sloping line will be a small positive number. (option c)
This is because a slope measures the change in the y value for a given change in the x value. As the line is fairly flat, the change in y value will be small. Since the line is upward-sloping, the change in the y value will be positive. Therefore, the slope of the line will be a small positive number.
To calculate the slope mathematically, we can use the formula
m = (y2-y1)/(x2-x1).This formula gives us the slope of the line between two points (x1, y1) and (x2, y2). In our case, since the line is fairly flat, the difference in y values (y2-y1) will be small, resulting in a small positive number for the slope.
We can also visualize this mathematically. If we graphed the line, it would look like a flat line, because the difference in y values is small. Therefore, the slope of the line will be a small positive number.
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find the x and y intercepts of this equation y=|x-1|-2
Does anyone know what I need to do I've tried to graph different points but it won't let me? If anyone knows ps tell me!
A graph of the solution (4, 4) for the system of linear equations is shown in the image attached below.
What is the x-intercept?In Mathematics, the x-intercept can be defined as the point at which the graph of a function crosses the x-coordinate (x-axis) and the value of "y" or y-value is equal to zero (0).
In this context, we would replace the y-value of the first equation 4x - 2y = 8 with zero (0) as follows;
4x - 2(0) = 8
4x = 8
x = 2 ⇒ (2, 0).
For the y-intercept of the first equation 4x - 2y = 8, we would substitute the x-value with zero (0) as follows;
4(0) - 2y = 8
2y = -8
y = -4 ⇒ (0, -4).
For the y-intercept of the first equation y = 3x/2 - 2, we would substitute the x-value with zero (0) as follows;
y = 3(0)/2 - 2
y = -2 ⇒ (0, -2).
By critically observing the graph of the given system of linear equations (see attachment), we can logically deduce that their solution lie at the point of intersection of the lines on the graph representing each of them, which is in Quadrant I and it is given by the ordered pair (4, 4).
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Help! Picture shown
Answer:
104
Step-by-step explanation:
it says it in the question
How to Use a Table to Multiply Two Polynomials
Step 1: Use the __________ in one polynomial to label the columns (one term per column).
Step 2: Label the _________ with the terms in the other polynomial (one term per row). Step 3: Multiply each __________ label by each row label to fill in all the entries.
Step 4: __________ all the products in the entries.
Step 5: __________ the sum, if possible.
The complete steps to to Multiply Two Polynomials are listed below
How to determine the stepsFrom the question, we have the following parameters that can be used in our computation:
The steps with missing values
When completed, we have
Step 1: Use the terms in one polynomial to label the columns (one term per column).Step 2: Label the rows with the terms in the other polynomial (one term per row).Step 3: Multiply each column label by each row label to fill in all the entries.Step 4: Add all the products in the entries.Step 5: Combine the sum, if possible.Read more about polynomial at
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Am I a function? Perhaps im not sure tho
Answer:
It is :)
Step-by-step explanation:
a fair die of 20 sides (d20) is rolled. what is the probability that the outcome is either odd or a multiple of 6?
The probability of rolling an odd number or a multiple of 6 on a d20 is 0.6 (10/20 + 4/20 - 2/20). This can also be expressed as a probability of 60%.
The probability of rolling an odd number or a multiple of 6 on a d20 is calculated using the following formula:
P(odd or multiple of 6) = P(odd) + P(multiple of 6) - P(odd and multiple of 6)
P(odd) = 10/20 or 0.5
P(multiple of 6) = 4/20 or 0.2
P(odd and multiple of 6) = 2/20 or 0.1
Therefore, the probability of rolling an odd number or a multiple of 6 on a d20 is 0.6 (10/20 + 4/20 - 2/20). This can also be expressed as a probability of 60%.
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in a large population, 71% of the people have been vaccinated. if 3 people are randomly selected, what is the probability that at least one of them has been vaccinated?
The probability that at least one of them has received immunizations is 97.5611%.
Probability, in its simplest form, gauges the likelihood that something will happen. When we are unsure of how an event will turn out, we might talk about the likelihood of different outcomes. The study of events susceptible to probability is known as statistics. Probability is a mathematical representation of the likelihood or potential that an event will take place. Probabilities can be stated as proportions with a range of 0 to 1, or as percentages with a range of 0% to 100%. Probability, in its simplest form, gauges the likelihood that something will happen. When we are unsure of how an event will turn out, we might talk about the likelihood of different outcomes. The study of events susceptible to probability is known as statistics.
1 - P( no one was vaccinated).
1-71%=0.29
If you pick one person at random from the population, there is a [tex]29[/tex]% chance they are not immunized. There is therefore no chance that any of the three people you choose will be an unvaccinated person [tex]0.29 X 0.29 X 0.29 = 0.024389.[/tex] Your solution, calculated as a percentage by deducting from [tex]1[/tex], is [tex]97.5611[/tex]%.
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A farmer keeps cows and pigs on his farm.
The ratio of cows to pigs on the farm is 2:3
(a) What percentage of the animals on the farm are cows?
(b) What percentage of the animals on the farm are pigs?
So, 40% of the animals on the farm are cows, whereas 60% are pigs.
What is percent?A % is a relative figure that represents the hundredth part of any amount. One percent (symbolized 1%) is one hundredth part; consequently, 100 percent denotes the complete amount and 200 percent defines twice the supplied amount. percentage. Mathematics percentile is a related topic. A percentage is a fraction of a whole represented as a number between 0 and 100. Nothing is zero percent, everything is 100 percent, half of everything is fifty percent, and nothing is zero percent. To calculate a percentage, divide the share of the total by the total and multiply by 100.
Here,
(a) On the farm, the cow-to-pig ratio is 2:3, which means that for every 5 animals, there are 2 cows and 3 pigs. To get the percentage, divide the number of cows by the total number of animals and multiply by 100. As a result, the farm's cow proportion is:
(2 / (2 + 3)) * 100 = 40%
(b) To find the percentage of pigs on the farm, we can use the same method as for the cows. The percentage of pigs on the farm is:
(3 / (2 + 3)) * 100 = 60%
So, 40% of the animals on the farm are cows, and 60% of the animals are pigs.
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Find the equation of the line represented by the graph below. If needed, type a fraction in the form a/b.
y = x+
The equation of the graph is y = 1 / 2 x - 3.
How to find the equation of a line?The equation of a line can be represented in slope intercept form as follows:
y = mx + b
where
m = slope of the lineb = y-interceptTherefore, let's find the slope of the graph as follows:
using (0, -3)(6, 0)
Hence,
slope = m = 0 + 3 / 6 - 0
slope = 3 / 6
slope = 1 / 2
Therefore, let's find the y-intercept using (0, -3).
y = 1 / 2x + b
-3 = 1 /2 (0) + b
b = -3
Therefore, the equation is y = 1 / 2 x - 3
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Help please!!!! Number 11 - 14
The value of the expression 11 - 14 using subtraction will be negative 3.
What is Algebra?Algebra is the study of algebraic expressions, while logic is the manipulation of those concepts.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to answer the problem correctly and precisely.
The numbers are given below.
11 and 14
Then the difference between the numbers 11 and 14 will be given by putting a minus sign between them. Then we have
⇒ 11 - 14
⇒ - 3
The value of the expression 11 - 14 using subtraction will be negative 3.
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