Answer:
4.88%
Step-by-step explanation:
All sides of a square are equal
let x = length of a side
Area = x·x = x²
Estimated area = (8.5)² = 72.25 in²
Actual area = (8.3)² = 68.89 in²
percent error = (actual area - estimated area) / (estimated area) x 100
% error = (68.89 - 72.25) / (68.89) x 100 = -4.88% the negative sign means the estimate was higher than the actual.
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What is the height of the plant if less than 3 weeks have passed? Express your answer as an inequality in terms of h.
(look at photo)
Answer:
The height of the plant is less than 10 centimeters if less than 3 weeks have passed.
Step-by-step explanation:
If less than 3 weeks have passed, then the value of t is less than 3. We can express this as t < 3.
Using the formula h = 3t + 1, we can substitute t < 3 to get:
h = 3t + 1 < 3(3) + 1
h < 10
A health club surveyed its members to determine if they worked out alone or with a personal trainer. The survey shows that 111 members work out alone, 67 work out with a personal trainer, and 41 sometimes work out alone and sometimes work out with a personal trainer.
The probability that a randomly selected member always works out alone or always works out with a personal trainer is 0.5393.
What is probability?
The idea of probability can be used to determine if an event is possible. It is solely useful for calculating the likelihood that an event will occur. a scale from 0 to 1, where 0 represents impossibility and 1 represents a specific occurrence.
We are given that 111 members work out alone, 67 work out with a personal trainer, and 41 sometimes work out alone and sometimes work out with a personal trainer.
So, the number of members who always work out alone is 111 - 41 = 70.
Similarly, the number of members who always work out with a personal trainer is 67 - 41 = 26.
Therefore, 96 members are there who either exercise alone or always exercise with a personal trainer.
Number of people surveyed = 111 + 67 - 41 = 137
Let A be the event where a member always exercises alone and B be the event where a member always exercises with a personal trainer.
From this, we get
P (A) = [tex]\frac{70}{137}[/tex]
P (B) = [tex]\frac{26}{137}[/tex]
P (A and B) = [tex]\frac{26}{137}[/tex]
So,
⇒ P(A or B) = P(A) + P(B) - P(A and B)
⇒ P(A or B) = [tex]\frac{70}{137}[/tex]+ [tex]\frac{26}{137}[/tex]- [tex]\frac{26}{137}[/tex]
⇒ P(A or B) = [tex]\frac{70}{137}[/tex]
Hence, the probability that a randomly selected member always works out alone or always works out with a personal trainer is 0.5393.
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Question:
A health club surveyed its members to determine if they worked out alone or with a personal trainer. The survey shows that 111 members work out alone, 67 work out with a personal trainer, and 41 sometimes work out alone and sometimes work out with a personal trainer. Find the probability that a randomly selected member always works out alone or always works out with a personal trainer.
a. 0.03714
b.0.5393
c.0.6342
d.0.6531
e.0.8128
Write a real-world problem that could be represented by 5x+ 30 ≥ 90.
Answer: If Jamie is selling bags of carrots for $5 each and already has $30 what would he use to calculate how much money he made.
CAN SOMEONE PLEASE HELP ME ASAP
20 characters
Step-by-step explanation:
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Find the measure of x.
Answer:
x = 25
Step-by-step explanation:
the exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
71° is an exterior angle of the triangle , then
x + 46 = 71 ( subtract 46 from both sides )
x = 25
solve for x; (a+bx)/(a+b)=(c+dx)/(c+d) if cb=ad
Answer:
To solve for x, we can start by cross-multiplying the equation to eliminate the denominators:
(a+bx)(c+d) = (c+dx)(a+b)
Expanding the terms on both sides:
ac + adx + bc + bdx^2 = ac + abx + cdx + bd
Simplifying and rearranging the terms:
adx + bdx^2 - abx - cdx = bd - ac
dx(ad - ab - c) = bd - ac
Now, since we know that cb=ad, we can substitute ad=cb into the equation:
dx(cb - ab - c) = bd - ac
dx(cb - ab - c) = b(cd - ac)
x = b(cd - ac)/(d(cb - ab - c))
Therefore, the solution for x is:
x = b(cd - ac)/(d(cb - ab - c))
nine more than a number, divided by -4, is a maximum of-2
The inequality for the provided sentence is (x+9)/(-4) >-2, and x>-1 is the obtained inequality's solution.
What is inequality?In mathematics, inequality is a concept that describes a relationship between two values. It is commonly expressed using symbols such as ">", "<", "≥", "≤", or "≠", and can be used to compare two numbers, variables, expressions, or sets. Inequality can be used to describe a range of values, such as "x is greater than 0 but less than 10", or "x is not equal to 0". Inequality is an important concept in mathematics, and it is used in many areas, such as problem solving, analysis, and statistics.
Given that, a maximum of -2 results when a number multiplied by 9 and split by -4.
Let x be the unknowable integer.
x+9 is the result of adding 9 to an integer.
Divided by -4, the outcome is (x+9)/.(-4)
Up to a limit of -2
(x+9)/(-4) >-2
On both sides of the discrepancy, multiply -4 to get
x+9>8
Subtract 9 on both the sides of inequality, we get
x>-1
Therefore, the inequality for the given phrase is (x+9)/(-4) >-2 and the solution for the inequality obtained is x>-1.
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Pls help thanks!!!!!!!!!!!!!!!!!!!
Answer:
x = 20.4
Step-by-step explanation:
cos(32) = adjacent/ hypotenuse
24 cos (32) = x
x = 20.4
You are scheduled to receive annual payments of R15 000 for each of the next 13 years. The discount rate is 9%. What is the difference in the present value, if you receive these payments at the beginning rather than at the end of each year?
Answer:
Step-by-step explanation:
To solve this problem, we need to calculate the present value of the cash flows in both cases - the case where the payments are made at the beginning of each year and the case where the payments are made at the end of each year - and compare the two values.
First, let's calculate the present value of the cash flows when payments are made at the end of each year. We can use the formula for the present value of an ordinary annuity:
PV = PMT x [(1 - (1 / (1 + r)n)) / r]
where PV is the present value, PMT is the payment amount, r is the discount rate, and n is the number of periods.
In this case, PMT = R15 000, r = 9%, and n = 13. Plugging in these values, we get:
PV = R15 000 x [(1 - (1 / (1 + 0.09)^13)) / 0.09] = R141,798.06
Now let's calculate the present value of the cash flows when payments are made at the beginning of each year. To do this, we can use the formula for the present value of an annuity due:
PV = PMT x [(1 - (1 / (1 + r)n)) / r] x (1 + r)
where PV is the present value, PMT is the payment amount, r is the discount rate, n is the number of periods, and (1 + r) adjusts the formula for the fact that payments are being made at the beginning of each year.
In this case, PMT = R15 000, r = 9%, and n = 13. Plugging in these values, we get:
PV = R15 000 x [(1 - (1 / (1 + 0.09)^13)) / 0.09] x (1 + 0.09) = R153,094.97
So the present value of the cash flows when payments are made at the beginning of each year is R153,094.97, and the present value of the cash flows when payments are made at the end of each year is R141,798.06. Therefore, the difference in present value is:
R153,094.97 - R141,798.06 = R11,296.91
So, receiving the payments at the beginning rather than at the end of each year would result in a present value that is R11,296.91 higher.
What is the shape of the cross section of a sliced cylinder
A sliced cylinder's cross section can be any shape that can be formed by intersecting a cylinder with a plane.
How to determine the shape?The shape of a sliced cylinder's cross section is determined by the angle and position of the slice.
If the slice is made parallel to the cylinder's base, the cross section is a circle.
If the slice is made at an angle to the cylinder's base, the cross section is an ellipse.
If the slice is made perpendicular to the cylinder's base, the cross section is a rectangle.
In general, a sliced cylinder's cross section can be any shape formed by intersecting a cylinder with a plane.
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The numbers 1-12 are written on a card and placed in a bag What is the probability that a number divisible by 3 is drawn? What represents its complement?
find the domain of f(x) = 1/√((3+X)(7+X))
The domain of f(x) is (-∞, -7) ∪ (-7, -3) ∪ (-3, ∞).
What is the domain of function?
The function f(x) is defined as:
f(x) = 1/√((3+X)(7+X))
For f(x) to be defined, the expression under the square root must be positive. Therefore, we need to find the values of x that make (3+x)(7+x) positive.
We can use a sign analysis to determine the signs of (3+x) and (7+x) for different intervals of x:
When x < -7, both (3+x) and (7+x) are negative, so their product is positive.
When -7 < x < -3, (3+x) is negative and (7+x) is positive, so their product is negative.
When -3 < x < -7, (3+x) is positive and (7+x) is negative, so their product is negative.
When x > -3, both (3+x) and (7+x) are positive, so their product is positive.
Therefore, the expression (3+x)(7+x) is positive when x < -7 or x > -3.
However, we also need to consider the denominator of f(x), which cannot be zero. Therefore, we need to exclude any values of x that make the denominator equal to zero. The denominator is equal to zero when:
(3+x)(7+x) = 0
This occurs when x = -3 or x = -7.
Therefore, the domain of f(x) is all real numbers except -3 and -7, or:
x < -7 or -7 < x < -3 or x > -3
In interval notation, the domain of f(x) is (-∞, -7) ∪ (-7, -3) ∪ (-3, ∞).
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What is the meaning of "concatenation"?
Answer:
Concatenation means joining number characters from string end to string end.
Step-by-step explanation:
Example:
concatenation of "water" and "bottle" is "waterbottle"
In math 1, 234, 5678 is 12345678
In your word problem the concatenation of "x" and "f" is X=F
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the local farmers market has many different booths selling cabbage below are different advertisements for cabbage calculate the cost for 1 pound of cabbage from each booth and determine which booth is the least expensive and which is the most expensive
Answer:
Step-by-step explanation:
Will give brainiest need Help go to my profile for other part
Answer:
Yes, there is a linear relationship between height and volume.
V = (12π)h. 12π is a constant.
If you rewrite this as y = (12π)x and graph it, you will notice that the graph is a line which goes through the origin.
Of the last 20 trains to arrive at Danville Station, 15 were on time. What is the experimental probability that the next train to arrive will be on time?
Write your answer as a fraction or whole number.
P(on time)=
The experimental probability that the next train to arrive at Danville Station will be on time is 3/4 or 0.75.
What is probability?
Probability is a way to gauge how likely something is to happen. Many things are difficult to forecast with absolute confidence. Using it, we can only make predictions about the likelihood of an event happening, or how likely it is. Probability can range from 0 to 1, with 0 denoting an impossibility and 1 denoting a certainty.
The experimental probability of the next train to arrive at Danville Station being on time is given by the number of on-time trains divided by the total number of trains that arrived -
experimental probability = number of on-time trains / total number of trains
From the information given, we know that out of the last 20 trains to arrive, 15 were on time. Therefore -
number of on-time trains = 15
total number of trains = 20
Substituting these values into the equation, we get -
experimental probability = 15 / 20
Simplifying the fraction, we get -
experimental probability = 3/4
Therefore, the experimental probability value is obtained to be 3/4 or 0.75.
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pls help me with this!!!!!!!!!
Answer:
Supplementary Angles: The angles 1 & 2 are supplementary angles, as, when combined together, their total angle measurement is 180°, or a straight line. Supplementary angles, by definition, is either two angles in which, when combined, the sum is equal to 180°.
Adjacent Angles: The angles 1 & 2 are adjacent angles, as they share a common side and vertex. Vertexes, by definition is the corner point.
Why it is not:
Complementary Angles: Complementary angles suggest that, when two angles are combined together, their total angle measurements is 90°, or it creates a right angle. In this case, the total measurements of the combination of ∠1 & ∠2 is a straight line, or 180°. Therefore, complementary angles is not your answer.
Vertical Angles: Vertical angles suggest that, when there are two angles, they are directly opposite of each other. Vertical angles would share the same angle measurements.
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The average high temperatures in degrees for a city are listed.
58, 61, 71, 77, 91, 100, 105, 102, 95, 82, 66, 57
If a value of 82° is changed to 94°, which of the following measures changes the most and what is the new value?
IQR 34°
Range 48°
Mean 81.4°
Median 84°
Answer:
If we change the value of 82° to 94°, the new data set becomes:
58, 61, 71, 77, 91, 100, 105, 102, 95, 94, 66, 57
IQR:
To find the new interquartile range (IQR), we first need to find the new values of the first quartile (Q1) and the third quartile (Q3). The median of the original data set is 84°, which is between the 6th and 7th values when the data is ordered. So, the first half of the data set consists of the values 58, 61, 71, 77, 82, and 91, and the second half consists of the values 94, 95, 100, 102, 105.
The new Q1 is the median of the first half of the data set, which is (71 + 77) / 2 = 74. The new Q3 is the median of the second half of the data set, which is (100 + 102) / 2 = 101.
The new IQR is Q3 - Q1 = 101 - 74 = 27.
Range:
The range is simply the difference between the largest and smallest values in the data set. Before the change, the range was 105 - 57 = 48. After the change, the range is 105 - 58 = 47.
Mean:
To find the new mean, we add up all the temperatures and divide by the number of temperatures. Before the change, the sum was 980 and there were 12 temperatures, so the mean was 980/12 = 81.7° (rounded to one decimal place). After the change, the sum is 982 and there are still 12 temperatures, so the new mean is 982/12 = 81.8° (rounded to one decimal place).
Median:
The median is the middle value in the data set when it is ordered. Before the change, the median was 84°. After the change, the median is still 84°, since only one value was changed and it did not affect the position of the median.
Therefore, the IQR changes the most, increasing from 34° to 27°. The new value of the IQR is 27.
It takes 3 friends, who all paint at the same rate, 9 hours to paint a room together. How many would it take for only 1 of the friends to paint the room?
a. 3
b. 6
c. 9
d. 27
ANSWER: 27 because the less people there is the more longer it takes
PLEASE HELP???!!!!!!!
The quadratic equation on the graph can be written as:
y = x² + 6x + 8
Which function is represented byy the graph?Remember that a quadratic equation whose vertex is (h,k) and the leading coefficient is a, can be written as:
y = a*(x - h)² + k
Here we can see that the vertex is at (-3, -1), replacing that we will get:
y = a*(x + 3)² - 1
Now we can also see that it passes through the point (-2, 0), replacing these values we will get:
0 = a*(-2 + 3)² - 1
0 = a - 1
1 = a
Then the quadratic is:
y = (x + 3)² - 1
Expanding that we get:
y = x² + 6x + 9 - 1
y = x² + 6x + 8
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Select the MEAN, MEDIUM, MODE and RANGE for the data below and how you worked it out
Employment status of parents in couple families
Labour force, parents or partners aged 15 years and over in Warragul
Both employed, worked full-time
580
Both employed, worked part-time
134
One employed full-time, one part-time
853
One employed full-time, other not working
471
One employed part-time, other not working
217
Both not working
799
Other (includes away from work)
193
Labour force status not stated (by one or both parents in a couple family)
185
Answer:
Measures of Central Tendancy
Mean: 429
Median: 344
Mode: 134,185,193,217,471,580,799,853
Range: 719
Step-by-step explanation:
Mean:The mean of a data set is commonly known as the average. You find the mean by taking the sum of all the data values and dividing that sum by the total number of data values. The formula for the mean of a population is
[tex]\mu = \frac{{\sum}x}{N}[/tex]
The formula for the mean of a sample is
[tex]\bar{x} = \frac{{\sum}x}{n}[/tex]
Both of these formulas use the same mathematical process: find the sum of the data values and divide by the total. For the data values entered above, the solution is:
[tex]\frac{3432}{8} = 429[/tex]
Median:The median of a data set is found by putting the data set in ascending numerical order and identifying the middle number. If there are an odd number of data values in the data set, the median is a single number. If there are an even number of data values in the data set, the median is the average of the two middle numbers. Sorting the data set for the values entered above we have:
[tex]134, 185, 193, 217, 471, 580, 799, 853[/tex]
Since there is an even number of data values in this data set, there are two middle numbers. With 8 data values, the middle numbers are the data values at positions 4 and 5. These are 217 and 471. The median is the average of these numbers. We have
[tex]{\frac{ 217 + 471 }{2}}[/tex]
Therefore, the median is
[tex]344[/tex]
Mode:The mode is the number that appears most frequently. A data set may have multiple modes. If it has two modes, the data set is called bimodal. If all the data values have the same frequency, all the data values are modes. Here, the mode(s) is/are
[tex]134,185,193,217,471,580,799,853[/tex]
√(1- x²) y' = xy
Calculus, please help
In the given differential equation, the general solution to the differential equation is: y = Ae^(√(1 - x²)), where A is any non-zero constant.
How to solve Differential Equation?To solve this differential equation, we can start by using separation of variables.
√(1 - x²) y' = xy
We can rewrite this equation as:
y' / y = x / √(1 - x²)
Now we can integrate both sides:
∫ (y' / y) dy = ∫ (x / √(1 - x²)) dx
ln|y| = -√(1 - x²) + C
where C is the constant of integration.
Taking the exponential of both sides:
|y| = e^(-√(1 - x²) + C) = e^C / e^(√(1 - x²))
Since we only care about the magnitude of y, we can drop the absolute value signs and write:
y = Ae^(√(1 - x²))
where A = ± e^C is another constant of integration.
Therefore, the general solution to the differential equation is:
y = Ae^(√(1 - x²))
where A is any non-zero constant.
Note that the solution only holds for |x| ≤ 1, since otherwise the expression inside the square root would become negative, and the solution would not be real-valued.
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11) m/EFG=132°, m/CFG=x+111,
and m/EFC=x+23. Find mLEFC.
Applying the angle addition postulate, the value of x in the image given is calculated as: 49.
What is the Angle Addition Postulate?The Angle Addition Postulate states that for any angle, the sum of its adjacent angles is equal to the angle formed by combining them.
Therefore, we have:
x + 11 + x + 23 = 132
Combine like terms to find the value of x:
2x + 34 = 132
2x = 132 - 34
2x = 98
2x/2 = 98/2
x = 49
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how many solutions does it have?
Y=x
Y=x-7
The number of solutions to the system of equation; y = x and y = x - 7 are;
There are no solution to the equation system
What is a solution to a system of equations?A solution is a set of the variable values in the equation system that make the system true at the same time.
The equations are;
y = x and y = x - 7
Whereby the right hand side of both equations are equated, we get;
x = x - 7
Subtracting x from both sides, we get;
x - x = x - 7 - x = -7
0 = -7
The above result is not true for all possible values of x, therefore, the system of equations has no solutions.Geometrically, the meaning of the equations is that the two lines representing the two equations do not intersect, and are parallel lines. This is shown by the slopes (the coefficient of x) of the two equations, which are the same (The slope is 1 in each equation)
The y-intercepts of the equations are however different (0 and -7), therefore, the two equations represent parallel lines with different y-intercepts
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We are learning about evaluating inverse trig functions, i have 0 clue what to do please help
AB has a length of 15, angle A is approximately 36.87 degrees and angle B is approximately 53.13 degrees.
EquationsWe can use the Pythagorean theorem to find the length of AB:
AB² = AC² + BC²
AB² = 9² + 12²
AB² = 81 + 144
AB² = 225
AB = √225
AB = 15
So, AB has a length of 15.
To find angle A, we can use the inverse tangent function:
tan(A) = opposite/adjacent = AC/BC = 9/12 = 3/4
A = tan⁻¹(3/4) ≈ 36.87°
So, angle A is approximately 36.87 degrees.
To find angle B, we can use the fact that the three angles in any triangle add up to 180 degrees:
B = 90 - A = 90 - 36.87 ≈ 53.13°
So, angle B is approximately 53.13 degrees.
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what are the solutions to the given equations
The aforementioned equations have the following solutions: x = 0, x = 3. And the right response is B) x = 0, x = 3.
How do you come up with equation solutions?Replace the equation's variable with the given integer. The expressions on both sides of the issue should ideally be made simpler. Check the accuracy of the derived equation.
We must rearrange the terms to obtain a quadratic equation in standard form in order to solve the problem x2 - 2x = x:
x² - 2x - x = 0
x² - 3x = 0
Now we can factor out x:
x(x - 3) = 0
When x = 0 or x - 3 = 0, the equation is true. Hence, the equation's answers are x² - 2x = x are x = 0 and x = 3.
We can enter these answers into the initial equation and determine whether they satisfy it to verify that they work:
f(0) = 0² - 2(0) = 0
g(0) = 0
So, x = 0 is a solution.
f(3) = 3² - 2(3) = 3
g(3) = 3
So, x = 3 is also a solution.
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Question:
Given the function f(x) = x² - 2x and g(x) = x what is the solution for the equation x² - 2x = x?
A) X= 1, x = 3
B) x = 0, x = 3
C) x=-1,x=0
D) x = 0, x = 1
Jochebed wants to buy a piece of land, and the owner will sell it to her for R20 000 cash. Alternatively, he will let her pay for it with five annual installments of R5 000 each, the first one being due right now. What is the implied interest rate here?
Answer:25% interest or $5,000
5\100= .05
.05 / 20= .0025
5,000/1,000=0.5
0.5 / 20=.25
Step-by-step explanation:
Answer:
Step-by-step explanation:
To determine the implied interest rate in this scenario, we can use the concept of present value (PV) and future value (FV).
If Jochebed decides to pay the full amount of R20 000 cash right now, then the PV is R20 000 and the FV is also R20 000. Therefore, the implied interest rate on this option is 0%.
If Jochebed decides to pay in five annual installments of R5 000 each, then the PV of the land is equal to the sum of the present values of each installment. Using the formula for present value of an annuity, we can calculate the PV as:
PV = R5 000 x ((1 - (1 + r)^-5) / r)
where r is the implied interest rate. Solving for r, we get:
r = 7.18%
Therefore, the implied interest rate on the installment plan is 7.18%.
Out of 144 children who have school dinners, 1/3 chose pasta, 1/4 chose jacket potatoes and the rest chose curry. How many chose curry?
Answer:
A fraction tells you how many parts of a whole there are. When we find a fraction of an amount, we are working out how much that 'part' is worth within the whole. You can see fractions of amounts all around us
Step-by-step explanation:
i may be wrong but I tried
stal Find the Product (X+3÷x)²
the product of (x + 3/x)² is x² + 6 + 9/x².
Why it is and what is Algebra?
To find the product of (x + 3/x)², we can use the formula for squaring a binomial:
(a + b)² = a² + 2ab + b²
In this case, we have a = x and b = 3/x, so we can substitute these values into the formula and simplify:
(x + 3/x)² = x² + 2(x)(3/x) + (3/x)²
= x² + 6 + 9/x²
Therefore, the product of (x + 3/x)² is x² + 6 + 9/x².
Algebra is a branch of mathematics that deals with the study of mathematical symbols and the rules for manipulating these symbols. It involves the use of letters and symbols to represent numbers and quantities in equations and expressions. The primary goal of algebra is to solve mathematical problems and equations using various operations such as addition, subtraction, multiplication, and division.
Algebraic concepts can be applied to a wide range of mathematical and real-world problems, including geometry, physics, engineering, economics, and statistics.
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Complete question:
Find the product of (x + 3/x)²2.
Let a and b be real numbers, where Which of the following functions could represent the graph on the right? f(x) = x (x – a)(x – b)2 f(x) = (x – a)(x – b)2 f(x) = x(x – a)³(x – b) f(x) = x2(x – a) 2(x – b)2
Answer:
Without a graph provided, it's difficult to determine which of the given functions represents the graph on the right. However, we can analyze each function to see if it has any characteristics that match the shape of the graph.
f(x) = x(x – a)(x – b)2
This function has one x-intercept at x = 0 and a double root at x = b. If b > a, then the function will have a local maximum at x = a and a local minimum at x = b. This function may represent a graph with a single x-intercept, a double root, and a local maximum and minimum.
f(x) = (x – a)(x – b)2
This function has one x-intercept at x = a and a triple root at x = b. If b > a, then the function will have a local minimum at x = a and a local maximum at x = b. This function may represent a graph with a single x-intercept, a triple root, and a local minimum and maximum.
f(x) = x(x – a)³(x – b)
This function has one x-intercept at x = 0 and a triple root at x = a. If a < b, then the function will have a local minimum at x = b. This function may represent a graph with a single x-intercept, a triple root, and a local minimum.
f(x) = x²(x – a)²(x – b)²
This function has two x-intercepts at x = 0 and x = a and a double root at x = b. If b > a, then the function will have a local maximum at x = a and a local minimum at x = b. This function may represent a graph with two x-intercepts, a double root, and a local minimum and maximum.
Based on these analyses, it's unclear which function represents the graph on the right, as all four functions have characteristics that could match the shape of the graph.
Answer:
It's A
Step-by-step explanation:
2023 edge
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