The focal radius of the ellipse of which the two foci seat are:
(-8 + 6√3, 10) (-8 - 6√3, 10).How to solve for the focal radiusAn ellipse can be represented in the standard form as (x/a)² + (y/b)² = 1, where (a,b) is the center of the ellipse and a and b are the semi-major and semi-minor axes respectively.
Given the equation of the ellipse:
16x² + y² - 128x - 20y + 292 = 0
To put it in the standard form, we have to complete the square and then divide both sides by the constant on the right-hand side.
First, we complete the square by adding and subtracting (128/2)² and (20/2)² respectively:
16x² - 128x + (128/2)² + y² - 20y + (20/2)² = 292 + (128/2)² + (20/2)²
Then, we divide both sides by 292:
(16x² - 128x + (128/2)²)/292 + (y² - 20y + (20/2)²)/292 = 1
On simplifying we get:
(4x - 8)²/144 + (y - 10)²/36 = 1
Now we have the standard form of the equation of the ellipse and we can find the semi-major and semi-minor axis and the center of the ellipse.
The semi-major axis is equal to the square root of the coefficient of x squared (144) and the semi-minor axis is equal to the square root of the coefficient of y squared (36).
The center of the ellipse is (-8, 10) and the semi-major and semi-minor axis are 12, 6 respectively.
The focal radius is the distance between the center and the focus. The focal radius is equal to the square root of the semi-major axis squared minus the semi-minor axis squared.
Focal radius = √(a² - b²) = √(144-36) = √108 = 6√3
The two foci of the ellipse sit on the x-axis, symmetric about the center of the ellipse. The foci are located at (-8 ± 6√3, 10).
Therefore, the two foci of the ellipse are at (-8 + 6√3, 10) and (-8 - 6√3, 10).
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In four years' time, Imran's mother will be three times as old as Imran. Six years ago, his mother was seven times as old as him. Find
(i) Imran's present age,
(ii) the age of Imran's mother when he was born.
Answer:
(i) 11 years old
(ii) 30 years old
Step-by-step explanation:
K is x
In four years, he will be x+4 and his mother will therefore be 3(x+4)
Six years ago, he was x-6 and his mother was 7(x-6).
In 10 years his mother went from 7(x-6) to 3(x+4)
so their difference is 10
7x-42+10=3(x+4), since 7x-42 is 10 years less than 3x+12
7x-32=3x+12
4x=44
x=11 age of K now
in 4 years he will be 15 and his mother 45.
Six years ago he was 5 and his mother 35
Therefore, his mother was 30 when he was born.
She is now 41.
Imran is currently 10 years old. His mother's current age is 34 years old and she was 24 years old when Imran was born.
Explanation:The question involves a system of equations based on the relationship between Imran and his mother's ages. We can define Imran's current age as i and his mother's current age as m. From the problem we have the following two equations:
In four years' time, his mother will be three times as old as him: m + 4 = 3 * (i + 4)Six years ago, his mother was seven times as old as him: m - 6 = 7 * (i - 6)
By solving this system of equations, we can determine that Imran's current age (i) is 10 years old and his mother's current age (m) is 34 years old. To find the age of Imran's mother when he was born, we would subtract Imran's age from his mother's, i.e., 34 - 10, so Imran's mother was 24 years old when Imran was born.
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Simplify the expression below.
12.8 - 3s + 15.5 + 8s
Answer: 5s + 28.3
Step-by-step explanation:
A professor wants to randomly select 4 students to go to the board. She decides to
randomly select the sixth student who enters the classroom and every seventh student
after that. Determine the students who will be going to the board. Write down the student
numbers.
Using Arithmetic progression, There were 4,13,22,31 pupils chosen out of the applicants.
The professor desires to choose four students at random.
A sequence of the form a, a + d, a + 2d, a + 3d, a + 4d, etc. is an arithmetic sequence. The common difference of the sequence is d, and the number an is the first term. An arithmetic sequence's nth term is determined by the formula a = a + (n - 1)d.
The fourth student was chosen at random, followed by every ninth student.
The fourth student is chosen first.
Using the following term formula, which is
=>a + d(n-1) (n-1)
The second student is the one after that.
=>4 + 9(2-1) (2-1)
=>4 + 9(1) (1)
=>4 + 9
=> 13
The third pupil will be
=>4 + 9(3-1) (3-1)
=>4 + 9(2) (2)
=>4 + 18
=> 22
The fourth pupil will be
=>4 + 9(4-1) (4-1)
=>4 + 9(3) (3)
=> 4+ 27
=> 31
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HELPPPP
Sid has a baseball cap collection. 75% of his caps have sports team symbols. If 24 of the caps have the team symbols, how many total caps does Sid have?
32
52
98
173
Sid has a total of 32 caps.
What is percentage?In mathematics →
a percentage is a number or ratio expressed as a fraction of 100.it is often denoted using the percent sign {%}.Given is that Sid has a baseball cap collection. 75% of his caps have sports team symbols. 24 of the caps have the team symbols.
Let the total number of caps be {x}. Then, we can write -
24 = 75% of {x}
24 = (75/100) {x}
24 = 3/4 {x}
{x} = 24 x 4/3
{x} = 32
Therefore, Sid has a total of 32 caps.
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The manufacturer's price for a Jinko car is $x
Ben was given a 7% discount on the manufacturer's price when he bought a Jinko.
Ben paid $23 622 when he bought his Jinko.
a) Calculate the value of x.
After a year Ben sold his Jinko for $19 880
b) Calculate the percentage loss, to 3 significant figures, on the price Ben paid for his Jinko.
During the year that Ben owned the Jinko, he travelled d km in the car.
The average fuel consumption of the car was 10km per litre. The average cost of the fuel he used was $1.40 per litre.
Other costs for the car in the year came to $938
The cost per km, including the loss in value, of his Jinko to Ben during the year that he owned the car was $0.40
c) Calculate the value of d.
Price paid for car = $23622, The loss value is $3742 and total distance the car was used for is 18000 kilometres.
What is distance?Distance is a measurement of how far apart two objects or points are. It is the length of the actual route taken to get from one place to another. In physics, distance is frequently used to refer to a physical length or an estimation based on other criteria, such as "a few kilometres apart" or "some miles away."
However, the distance travelled by an object to move from its initial position to its final position will be the same as the distance travelled to move from its final position to its initial position. As a result, distance is independent of a body's motion.
a. Price paid for car = $23622
Discount = 7%
Sale price = $19880
b. The loss value is $3742
c. Let total distance travelled be d
Fuel consumption=10km per litre
Cost of fuel =1.4 per litre
Cost of fuel per kilometre =1.410= 0.14
Other cost = 938
Cost of usage =0.14*d +938
Total cost including loss = 0.14*d +938+3742
The cost per kilometre has been provided as 0.4
Total cost of the vehicle's use = 0.4*d
B=A0.4*d = 0.14*d +938+37420.26*d = 4680d = 18000
Thus, Total distance the car was used for is 18000 kilometres.
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What 2 numbers are equivalent to 35%
35% can be represented in equivalent decimal form and fraction form 0.35 and 7/20
How is this calculated?35% is equivalent to 0.35 in decimal form. Divide the percentage by 100 to get the decimal equivalent. 35 / 100 = 0.35.
35% is equivalent to 7/20 as a fraction. A percentage must be multiplied by 100 before being simplified to become a fraction. 35/100 = 0.35, or 7/20, can be written more simply.
Although both forms are equal, they are employed in various contexts. The fraction form is more frequently used in probability and statistics while the decimal form is more frequently used in calculations.
It's also important to keep in mind that percentages are a technique to express numbers as fractions of 100. For example, 35% is the same as 35/100, or 7/20.
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If the perimeter of triangle ABC is 27. 6cm, what is the perimeter, in centimeters of triangle BCD. AB = 9. 6cm BC = 6 cm
The perimeter of the triangle BCD is 17.25 centimeters.
A closed route that covers, encircles, or outlines a one-dimensional length or a two-dimensional form is called a perimeter. A circle's or an ellipse's circumference is referred to as its perimeter. There are several uses in real life for perimeter calculations.
so, perimeter of the triangle is the sum of all its side length.
Perimeter of one triangle / perimeter of another triangle= side of one triangle by side of another triangle.
let us suppose that the perimeter of triangle BCD is equal to X
27.6/x = 9.6/6
x = 17.25 cm
therefore, the perimeter of triangle BCD is equal to 17.25 centimeters.
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Please help if you can
The exponential function that satisfies the given conditions is given as follows:
[tex]f(t) = 4e^{1.099t}[/tex]
How to model the exponential function?The format of the exponential function for this problem is given as follows:
f(t) = 4e^(kt).
In which k is the exponential growth rate.
After five hours, there was 972 bacteria, meaning that when t = 5, f(t) = 972, hence the growth rate is obtained as follows:
[tex]972 = 4e^{5k}[/tex]
[tex]e^{5k} = 243[/tex]
5k = ln(243)
k = ln(243)/5
k = 1.099.
Meaning that the function is defined as follows:
[tex]f(t) = 4e^{1.099t}[/tex]
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Solve the system of equations.
Answer:
(3,2)
Step-by-step explanation:
2(y = 5x - 13)
-(2y = -5x + 19)
0 = 15x - 45
15x = 45 --> x=3
y = 5(3) - 13
y = 2
the four longest rivers in the world are all named after types of monkeys the howler river is 230 Mi longer than the Barbary River the Gin river is 150 Mi longer than the Barbarian River the retinal river is 30 miles shorter than the Barbary River the rivers when combined have a total length of 19,230 Mi how long is each River?
Answer: We can set up a system of equations to represent the information given:
Let x = length of Barbary River
Howler River = x + 230
Gin River = x + 150
Retinal River = x - 30
Total length = x + (x + 230) + (x + 150) + (x - 30) = 19,230
We can then use substitution and the equations above to solve for the length of each river:
x + (x + 230) + (x + 150) + (x - 30) = 19,230
4x + 350 = 19,230
4x = 18,880
x = 4720 (length of Barbary River)
Howler River = x + 230 = 4720 + 230 = 4950 mi
Gin River = x + 150 = 4720 + 150 = 4870 mi
Retinal River = x - 30 = 4720 - 30 = 4690 mi
Step-by-step explanation:
1. If mA = 3x° and
m
what is the value
of x?
Answer: here
Step-by-step explanation:
Divide each term in ma=3xma=3x by aa and simplify.m=3xa
Plsss helppp!!!!!!!!
Answer: (7)^-2 and 1/49 are equivalent
Step-by-step explanation:
Simplify the expression
Answer: 5.4h -13 -1.9d
Step-by-step explanation:
combine the like terms together.
Pedro buys lunch at school every day. He always gets pizza when it is
available. The cafeteria has pizza about 80% of the time.
Pedro runs a simulation to model this using a random number generator. He
assigns these digits to the possible outcomes for each day of the week:
• Let 0 and 1 = no pizza available
• Let 2, 3, 4, 5, 6, 7, 8, and 9 = pizza available
The table shows the results of the simulation.
95032 47150 71709 38889 94007
35013 57890 72924 19365 47879
What is the estimated probability that Pedro will eat pizza for lunch every way
next week?

The estimated probability that Pedro will eat pizza for lunch every way next week is 1/2
The term called probability in math is known as branch of mathematics that measures the uncertainty of the occurrence of an event using numbers
Here we know that the cafeteria has pizza about 80% of the time.
And here we have also know that Pedro runs a simulation to model this using a random number generator.
The result of the table shows the results of the simulation.
Here we need to estimate the probability that Pedro will eat pizza for lunch every way next week and it can be calculated as,
Here we have know that in each box, here there are 5 digits to represent the 5 days in a week.
And here there’s 10 boxes to represents 10 weeks.
Then in each box there’s a chance out of 5 for Pedro to get pizza.
Then the probability is calculated as,
=> 5/10
=> 1/2
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[Pre-Calculus honors] Find the rotation in revolutions per minute given the angular speed and the radius given the linear speed and the rate of rotation.
37. V= 82.3 m/s, 131 rev/min
38. V= 144.2 ft/min, 10.9 rev/min
39. V= 553 in. /h, 0.09 rev/min
Please do all of them, or at least as many as you can.
Answer: To find the rotation in revolutions per minute (RPM) given the angular speed and the radius, we can use the formula:
RPM = (Angular Speed (rad/s)) / (2 * pi)
To find the RPM, we first need to convert the linear speed to angular speed. We can do this by using the formula:
Angular Speed (rad/s) = Linear Speed (m/s) / Radius (m)
Angular Speed = 82.3 m/s / 0.131 m = 630 rad/s
RPM = (630 rad/s) / (2 * pi) = 131 rev/min
To find the RPM, we first need to convert the linear speed to angular speed. We can do this by using the formula:
Angular Speed (rad/s) = Linear Speed (ft/min) / (Radius (ft) * 12)
Angular Speed = 144.2 ft/min / (10.9 ft * 12) = 10.9 rad/s
RPM = (10.9 rad/s) / (2 * pi) = 10.9 rev/min
To find the RPM, we first need to convert the linear speed to angular speed. We can do this by using the formula:
Angular Speed (rad/s) = Linear Speed (in/h) / (Radius (in) * 3600)
Angular Speed = 553 in/h / (553 in * 3600) = 0.09 rad/s
RPM = (0.09 rad/s) / (2 * pi) = 0.09 rev/min
Step-by-step explanation:
3. Elizabeth works for Picasso Paint Supplies. Her annual
a. What is Elizabeth's annual Social Security deduction?
b. What is Elirahath's annual Medicare deduction?
c. Elizabeth is paid every other week. What is her biweekly gross pay?
d. Each pay period, Elizabeth's employer deducts 21% for federal withholding tax. What is
the total amount withheld for federal tax from Elizabeth's annual salary?
e: If Elizabeth is taxed at an annual rate of 2. 875% for city tax how much is deducted from
her salary per paycheck to withhold that tax?
f. As of January 1, Elizabeth will receive a 9. 1% raise. What will Elizabeth's annual salary be?
Elizabeth's annual Social Security deduction is $72580, Medicare deduction is $1053.71 per year, biweekly gross pay is $2796.15, total amount withheld for federal tax is $15336.80, amount deducted is $66.50 and annual salary is $79,307.38
a) Social Security deduction is 6.2% of Elizabeth's annual salary, which is $72,580 x 6.2% = $4,486.76 per year.
b) Medicare deduction is 1.45% of Elizabeth's annual salary, which is $72,580 x 1.45% = $1,053.71 per year.
c) Elizabeth is paid every other week, so her bi-weekly gross pay is $72,580 / 26 = $2,796.15.
d) The total amount withheld for federal tax from Elizabeth's annual salary is $72,580 x 21% = $15,336.80.
e) The amount deducted from Elizabeth's salary per paycheck for city tax is ($72,580 x 2.875%) / 26 = $66.50.
f) As of January 1, Elizabeth will receive a 9.1% raise, so her annual salary will be $72,580 x (1 + 0.091) = $79,307.38.
Correct Question :
Elizabeth works for Picasso Paint Supplies. Her annual salary is $72,580.
a) What is Elizabeth's annual Social Security deduction?
b) What is Elizabeth's annual Medicare deduction?
c) Elizabeth is paid every other week. What is her biweekly gross pay?
d) Each pay period, Elizabeth's employer deducts 21% for federal withholding tax. What is the total amount withheld for federal tax from Elizabeth's annual salary?
e) If Elizabeth is taxed at an annual rate of 2.875% for city tax, how much is deducted from her salary per paycheck to withhold that tax?
f) As of January 1, Elizabeth will receive a 9.1% raise. What will Elizabeth's annual salary be?
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the number of observations will always be the same as the group of answer choices number of variables. number of elements. population size. sample siz
In a data set, the number of observations will always be the same as the group of answer choices number of variables is the number of elements.
A data set is a collection of data. It is a set that corresponds to one or more database tables, where every column of a table represents a particular variable, and each row corresponds to a given record of the data set in question.
The data set lists values for each of the variables, such as example height and weight of an object, for each member of the data set. Data sets can also consist of a collection of documents or files.
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Question: PartA Can you draw a Gaussian surface that offers a simple way to compute the electric field surrounding a charged dipole? O Yes O No
It is impossible to create a Gaussian surface that makes it easy to calculate the electric field around a charged dipole. Thus, the response is no.
According to Gauss's law, the enclosed electric charge directly affects how much an electric field's net flux is moving over a closed surface. This is given by, [tex]\phi=\frac{Q}{\epsilon_0}[/tex], where the electric flux is represented by Ф, the permittivity of free space is represented by [tex]\epsilon_0[/tex], and the enclosed charge is represented by Q.
Gauss's law must be applied for the symmetric charge distribution required for the given surface in the equation [tex]\frac{Q}{\epsilon_0}=\int\vec{E}\cdot d\vec{A}[/tex] to have a single value of the electric field.
The electric field surrounding a charged particle can be estimated using the Gaussian surface. Gauss' Law cannot be applied to the dipoles because electric dipoles lack a surface with a symmetric distribution of the electric field all around them.
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what is 193 divide by 5 =
Answer:38.6
Step-by-step explanation:
How many solutions does the following equation have? 6x + 8=2(3x+4)
The equation 6x + 8 = 2(3x + 4) had infinitely many solutions.
How to Find How Many Solution an Equation Has?The equation 6x + 8 = 2(3x + 4) can be solved by isolating x on one side of the equation. To do this, we can first distribute the 2 on the right side of the equation:
6x + 8 = 6x + 8
Then we can subtract 8 from both sides:
6x + 8 - 8 = 6x + 8 - 8
6x = 6x
Divide both sides by 6
6x/6 = 6x/6
x = x
This means x can assume any value which will make the equation true.
Therefore, the equation had infinitely many solutions.
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a train traveled at an average speed of 45 miles per hour for 40 minutes, and at an average speed of 60 miles per hour for 1 hour. what was the average speed of the train, in miles per hour, for the trip?
So, the average speed of the train is 54.09 miles per hour.
To calculate the average speed of the train for the entire trip, you need to find the total distance traveled and the total time traveled.
First, you can convert the time traveled at each speed to hours. 40 minutes is equal to 40/60=0.67 hours. So the total time traveled is 1+0.67=1.67 hours.
To find the total distance traveled, you can use the formula: distance = speed x time. At 45 mph, the distance traveled is 45 x 0.67 = 30.15 miles. At 60 mph, the distance traveled is 60 x 1 = 60 miles. Therefore, the total distance traveled is 30.15 + 60 = 90.15 miles.
Finally, you can use the formula: average speed = total distance / total time.
Average speed = 90.15 miles / 1.67 hours = 54.09 miles per hour.
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What is the length of the missing side?
Answer:
D: 39
Step-by-step explanation: Using the steps of the Pythagorean theorem.
How long does it take Emil to ride his skateboard
42 meters at 6 meter/minute?
7 hours
7 minutes
7 days
Answer:
42/6 = 7 Minutes
Step-by-step explanation:
alma starts running and jacob starts running 7 seconds later. let t represent the number of seconds since alma started running. write an expression (in terms of t ) that represents the number of seconds jacob has been running.
The expression that represents the number of seconds Jacob has been running is t - 7.
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. An expression's structure is as follows: (Math Operator, Number/Variable, Math Operator). The two integers are connected by a mathematical operator.
Since Jacob started running 7 seconds after Alma, the number of seconds Jacob has been running can be represented as t - 7. So the expression that represents the number of seconds Jacob has been running is: t - 7.
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I need the value of x please?????????????
Based on the triangle sum theorem, the value of x is: 45.
What is the Triangle Sum Theorem?The Triangle Sum Theorem states that in any triangle, the sum of the measures of the interior angles is always equal to 180 degrees. This is true for all triangles, regardless of their size or shape.
The theorem can be proven using Euclidean geometry, which states that the sum of the angles in a triangle is always 180 degrees. This theorem is also known as the "angle sum property" of a triangle.
Therefore:
2x + 10 + 30 + 50 = 180 (based on the triangle sum theorem).
Combine like terms:
2x + 90 = 180
2x = 180 - 90
2x = 90
2x/2 = 90/2
x = 45.
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Please help with question 11!!
“Given the functions f(x) = sqr x^2 - 3 and g(x) = sqr 36-x^2 what is the domain of f- g within the real set of numbers??
PLS HELP!!! THANK YOU!!
The domain of the function f(x) - g(x) is given as follows:
[tex][-6, -\sqrt{3}] \cup [\sqrt{3},6][/tex]
How to obtain the domain of the function?The domain of a function is the set composed by all the input values that the function accepts.
For a square root, the inner term cannot be negative, hence the domain of f(x) is given as follows:
x² - 3 >= 0
|x| >= sqrt(3)
x <= -sqrt(3) or x >= sqrt(3).
For function g(x), the domain is given as follows:
36 - x² >= 0
x² <= 36
|x| <= square root (36)
|x| <= 6.
-6 <= x <= 6.
The domain of the subtraction function is the intersection of the domain of both functions, hence:
[tex][-6, -\sqrt{3}] \cup [\sqrt{3},6][/tex]
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Please help me asap !
On the graph:
A represents the reactants
B represents the activated complex
C represents the products
D represents the activation energy
What is the information in the energy profile diagram of the reaction shown?The path of energy changes that take place in a reaction, as well as the energy content of the reactants and products, are depicted in the energy profile diagram.
The letters shown in the diagram represents the following:
A stands for the activation energy, which is the minimal amount of energy required for reactant molecules to produce products.The activated complex, represented by B, is an intermediate state created during the transformation of reactants into products.The reaction's overall enthalpy change is denoted by the letter C.D stands for the products' potential energy, which is contained in their chemical bonds.E stands for the reactants' potential energy, which is the chemical potential energy contained in the bonds that make up the reactant.The reactants are denoted by F.G stands for the goods.Since the energy content of the reactants is higher than that of the products, the reaction is exothermic.Learn more about energy profile diagram at:
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What is the focus of the hyberbola shown ?
(0, -26) and (0,25 )is the focus of the hyberbola.
Locate the hyperbola's focus?Any point in a hyperbola has distances from the two foci that are fixedly different from each other.
Every hyperbola has two foci (plural for focus). The hyperbola's branches are encircling both of them.
(0,-26) is inside the lower branch (0,-24) is not inside the lower branch (0,25) is inside the upper branch (0,30) is inside the upper branch
Lower branch is our main focus. We must examine the image to determine which of two potential solutions is correct. From the maxima to the focus for the lower branch is one distance. The top branch needs the same, which we must discover. Distances between points (0,30) and (0.25) are 1 and 6, respectively.
(0, -26) and (0,25).
The complete question is,
What is the depicted hyperbola's point of focus? (0, −26) (0, −24) (0, 25) (0, 30) (0, 30) BRAINLIESTT.
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The functions f(x)=−34x+2 and g(x)=(14)x+1 are shown in the graph. What are the solutions to −34x+2=(14)x+1? Select each correct answer. Responses −1 negative 1 0 0 1 1 2 2 3
The solutions to the equations is the point of intersection of graphs and the points are ( 0 , 2 ) and ( 1 , 1.25 )
What is Equation of Graph of Polynomials?Graphs behave differently at various x-intercepts. Sometimes the graph will cross over the x-axis at an intercept. Other times the graph will touch the x-axis and bounce off.
Identify the even and odd multiplicities of the polynomial functions' zeros.
Using end behavior, turning points, intercepts, and the Intermediate Value Theorem, plot the graph of a polynomial function.
The graphs cross or are tangent to the x-axis at these x-values for zeros with even multiplicities. The graphs cross or intersect the x-axis at these x-values for zeros with odd multiplicities
Given data ,
Let the first equation be represented as A
Now , the value of A is
y = ( -3/4 )x + 2 be equation (1)
Let the second equation be represented as B
Now , the value of B is
y = ( 1/4 )ˣ + 1 be equation (2)
Now , to calculate the solutions to the equations , plot the equations in the graph
The point of intersection of equation of lines represents the solution to the equation
Substituting the values in the equation , we get
( -3/4 )x + 2 = ( 1/4 )ˣ + 1
The first point of intersection is ( 0 , 2 )
when x = 0 , y = 2
( -3/4 ) (0) + 2 = ( 1/4 )⁰ + 1
On simplifying the equation , we get
0 + 2 = 1 + 1
2 = 2
So , the solution is ( 0 , 2 )
Hence , the equations are solved
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Find the point on the directed segment from (-4, 5) to (12, 13) that divides it into a ratio of 1:5
Answer: x=-4/3, y=19/3
Step-by-step explanation: According to the formula,
x=(mx2+nx1)/(m+n) , y=(my2+ny1)/(m+n)
Here the ratio is 1:5
m=1 , n=5
x1 = -4, x2 = 12
y1 = 5, y2 = 13
Now put in the formula,
[tex]x=\frac{1*12+5(-4)}{1+5}[/tex] , [tex]y=\frac{1*13+5*5}{1+5}[/tex]
x=(12-20)/6 , y= (13+25)/6
x=-8/6 , y=38/6
x=-4/3 , y=19/3
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