Derivative f'(c) equals the average rate of change of f(x) over the interval [1, 4], which is given by (f(4) - f(1))/(4 - 1).
It's not a contradiction of the Mean Value Theorem, as we don't have sufficient information to confirm if the conditions for applying the MVT are met.
A more detailed explanation of the answer.
We need to discuss the Mean Value Theorem and determine if it's a contradiction for the given function.
Let f(x) be a continuous function on the interval [1, 4] and differentiable on the open interval (1, 4). According to the Mean Value Theorem (MVT), if these conditions are met, there exists a value c in the open interval (1, 4) such that the derivative f'(c) equals the average rate of change of f(x) over the interval [1, 4], which is given by (f(4) - f(1))/(4 - 1).
However, in your question, the function f(x) is not specified. We cannot determine whether f(x) is continuous on [1, 4] and differentiable on (1, 4) without knowing its specific form. Therefore, we cannot conclude that the MVT is applicable in this case.
So, it's not a contradiction of the Mean Value Theorem, as we don't have sufficient information to confirm if the conditions for applying the MVT are met. If you could provide the specific function f(x), we could further analyze the situation and determine if the MVT can be applied.
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What relationship do you notice between the amount Tim has saves and the amount Jill has saved each week?
a. The Taylors may want to avail themselves of the help of a professional investment advisor.
b. They may prefer to find a reputable planner with appropriate credentials and experience
c,. The Taylors should track their expenses more closely because overspending without replacement income can be disastrous
How can this portfolio be done?Because successfully managing a large investment portfolio takes a great deal of time and knowledge, the Taylors may want to avail themselves of the help of a professional investment advisor.
2) They may prefer to find a reputable planner with appropriate credentials and experience. It will be important for them to shop around to find someone with whom they feel comfortable. A fee-only planner might be the best choice, especially if their current investments are doing well and the Taylors are not interested in making big changes that would generate sales, and commissions, for the planner
e) Whether or not Tim and Jill continue to work with a financial planner depends on their financial knowledge, time and commitment. Given their successful, independent, management of their financial situation to date, they may want to develop their own plan and have it reviewed by a planner as confirmation that they are on the right track.
f) The Taylors should track their expenses more closely because overspending without replacement income can be disastrous. In the event of an unexpectedly bad financial situation or a long downturn in the economy, they would not have the time or resources to rectify their misfortune and achieve their goals.
Their big five expenses are likely to be the same as the average U.S. household - taxes, food, housing, medical care and transportation. Most retirement benefits will be taxable, as will other investment earnings. Depending on the age of the house or appliances, repairs or replacements may be necessary.
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X - (-1. 8) = - 31 what is the value of x?
The value of x in the equation is -32.8.
To solve for X in the equation X - (-1.8) = -31, we need to follow some basic algebraic steps.
The first step is to simplify the equation by adding the two negatives, which would result in X + 1.8 = -31. The next step would be to isolate X by subtracting 1.8 from both sides of the equation.
This will give us X = -32.8.
The value of X in this equation is -32.8.
It's essential to keep in mind the basic rules of algebra when solving such equations.
By following the rules and taking it step by step, we can solve any equation, regardless of how complex it may seem.
In conclusion,
X - (-1.8) = -31 is a straight forward equation that can be solved using basic algebraic steps.
The value of X is -32.8.
The given equation is X - (-1.8) = -31.
When you see a subtraction of a negative number, you can rewrite it as addition of the positive number. So, X - (-1.8) becomes X + 1.8. The equation now is:
X + 1.8 = -31
To find the value of X, subtract 1.8 from both sides of the equation:
X + 1.8 - 1.8 = -31 - 1.8
We can simplify by adding the values of the two negative numbers on the left side of the equation:
X + 1.8 = -31
Next, we can isolate the variable x by subtracting 1.8 from both sides of the equation:
X = -31 - 1.8
Simplifying further, we get:
X = -32.8
This simplifies to: X = -32.8
So, the value of X is -32.8 in the equation X - (-1.8) = -31.
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15√2 = x√2please help me, how do i solve this? i'm in 9th grade and i completely forgot how to do this.
The equation 15√2 = x√2 can be solved, the value of x that satisfies the equation is 15.
To solve the equation 15√2 = x√2, you can divide both sides by √2 since the square root of 2 is a common factor on both sides of the equation. This gives:
15√2 / √2 = x√2 / √2
On the left side of the equation, the √2 and the denominator cancel out, leaving:
15
On the right side of the equation, the √2 and the denominator also cancel out, leaving:
x
So the solution to the equation is:
x = 15
Therefore, the value of x that satisfies the equation is 15.
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WEATHER Suppose during springtime it rains about 40% of the time when school is dismissed for the day, Describe a model that could be used to simulate whether it will be raining when school is dismissed on a particular day during springtime.
One way to model this situation is by using a probability distribution, such as the binomial distribution. The binomial distribution models the probability of a certain number of successes (in this case, rain) in a fixed number of trials (in this case, school days during springtime).
Let's say we want to simulate whether it will be raining when school is dismissed on a particular day during springtime. We can define a success as rain and a failure as no rain. Then, the probability of success (rain) is 0.4, and the probability of failure (no rain) is 0.6.
To simulate whether it will be raining on a particular day, we can use a random number generator to generate a value between 0 and 1. If the value is less than or equal to 0.4, we can consider it a success (rain) and if it's greater than 0.4, we can consider it a failure (no rain).
We can repeat this process for a large number of trials (school days during springtime) to simulate the probability of rain over a given period of time. By keeping track of the number of successes (rainy days) and failures (non-rainy days), we can estimate the probability of rain during springtime when school is dismissed.
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A jewelry company purchases a necklace for $24. If they mark it up 36% to sell it at their store, what is the selling price of the necklace?
The selling price of the necklace at the store is $32.64.
To calculate the selling price of the necklace, we will first find the markup amount and then add it to the original cost.
Markup = (Original Cost) x (Markup Percentage)
Markup = $24 x 36% = $24 x 0.36 = $8.64
Now, add the markup amount to the original cost to find the selling price:
Selling Price = Original Cost + Markup
Selling Price = $24 + $8.64 = $32.64
So, the selling price of the necklace at the store is $32.64.
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Martin collected data from students about whether they played a musical Instrument. The table shows his
results.
Instrument
No Instrument TOTAL
Boys
42
70
112
Girls
48
88
TOTAL
90
110
200
Of the students surveyed, how many played an instrument?
The number of students surveyed who played an instrument is
Out of the students surveyed, 90 played a musical instrument.
To find the total number of students who played a musical instrument, we need to look at the table provided and sum up the number of boys and girls who played an instrument.
From the table, we can see the following:
- Boys who played an instrument: 42
- Girls who played an instrument: 48
To find the total number of students who played a musical instrument, simply add the number of boys and girls together:
Total students who played an instrument = (Number of boys who played an instrument) + (Number of girls who played an instrument)
Total students who played an instrument = 42 (boys) + 48 (girls)
Total students who played an instrument = 90
So, of the students surveyed, 90 played a musical instrument.
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WHATS THE AREAA OF THE PARALLELOGRAM
Answer:16 + (1/2) × 8 = 16 + 4 = 20 unit2
Step-by-step explanation:
Consider two coordinates given by P(−2, 0) and Q(4, 3).
Find the equation of the straight line connecting these points in the form
y = mx + c
The equation of the straight line connecting these points in the form of y = mx + c is given as y = (1/2)x + 1.
The line in the slope-intercept equation is given as,
y = mx + c
where:
m = the slope of the line
c = the y-intercept
The slope m of the line connecting two points (x1, y1) and (x2, y2) is given by the formula
= (y₂ - y₁) / (x₂ - x₁)
Substituting the coordinates values of P and Q into this formula, we get
[tex]m = (3 - 0) / (4 - (-2))[/tex]
= 3/6
= 1/2
Therefore, the value of the m is 1/2
We can find the value of c by substituting the m and x values in the equation. using the point P and Substituting x and y values in the equation we get
x = - 2
y = 0
[tex]0 = (1/2) × (-2) + c[/tex]
c = 1
Therefore, the value of c is 1.
By substuting the m and c values in the standard slope-intercept formula we get y = (1/2)x + 1.
Therefore, the equation of the line connecting points P and Q is y = (1/2)x + 1.
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Two straight lines cross at a point.
b+c+d=280°
Work out the sizes of angles a, b, c and d.
a
b
d.
C
Not drawn accurately
Answer:
a = c = 80°b = d = 100°Step-by-step explanation:
You want the measures of the angles where lines cross if the sum of three of them is 280°.
Linear pairAngle b and c form a linear pair, so ...
b + c = 180°
Substituting that into the given equation, we have ...
b + c + d = 280°
180° + d = 280°
d = 100°
Vertical anglesAngles in this figure that do not share a side are vertical angles, hence congruent.
b = d = 100°
c = 180° -b = 180° -100° = 80° . . . . using the linear pair relation
a = c = 80°
A crane is being set up on a slope of. If the base of the crane is. 0 ft wide, how many inches should the downhill side of the base be raised in order to level the crane?
The downhill side of the crane base should be raised by approximately 4.53 inches to level the crane on a 2.5° slope.
We can use trigonometry here. Let x be the length (in inches) that the downhill side of the base should be raised. The slope of the ground is given to be 2.5°,
tan(2.5°) ≈ 0.0436
Now, using the equation,
x / 12 = 9tan(2.5°)
Here, we converted the base's width from feet to inches (by dividing by 12) and calculated the crane's required vertical displacement (inches) using the angle's tangent. When we simplify this equation, we obtain,
x = 9tan(2.5°)12
x ≈ 4.53 inches
Therefore, the downhill side of the base should be raised by about 4.53 inches to level the crane.
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Complete question - A crane is being set up on a slope of 2.5 degrees. If the base of the crane is 9.0 ft wide, how many inches should the downhill side of the base be raised in order to level the crane?
Find the Zeros of each quadratic equation below by graphing
bro idrk but I think
Answer: The correct option is
(A) {-1, -5}.
Step-by-step explanation: We are given to find the zeroes of the quadratic function graphed in the figure shown.
We know that
the zeroes of a quadratic function f(x) are the value of x for which f(x) is equal to zero.
That is, the points on the graph where the curve crosses the X-axis.
From the graph, we note that the curve of the function crosses the X-axis at the points x = 1 and x = -5.
Therefore, the zeroes of the given function are x = -1 an x = -5.
Thus, option (A) is CORRECT.
Consider the function f(x) = 1/z on the interval (5,9). (A) Find the average or mean slope of the function on this interval, Average Slope =?
(B) By the Mean Value Theorem, we know there exists a c in the open interval (5,9) such that f'(c) is equal to this mean slope. Find all values of c that work and list them separated by commas) in the box below
Therefore, the only value of c that works is 6√5.
(A) To find the average slope of the function f(x) = 1/x on the interval (5, 9), we use the formula:
Average Slope = (f(9) - f(5)) / (9 - 5)
Plugging in the values, we get:
Average Slope = (1/5 - 1/9) / 4 = -1/180
Therefore, the average slope of the function on the interval (5, 9) is -1/180.
(B) By the Mean Value Theorem, we know there exists a c in the open interval (5, 9) such that f'(c) is equal to this mean slope.
The derivative of f(x) = 1/x is f'(x) = -1/x^2.
Setting f'(c) = -1/180, we get:
-1/c^2 = -1/180
Solving for c, we get:
c = ±6√5
Since c must be in the open interval (5, 9), the only value that works is:
c = 6√5
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1. Given XY and ZW intersect at point A Which conjecture is always true about he giver statement? A. XA = AY B. XAZ is acute C. XY is perpendicular to XY D. X, Y, Z and W are noncolinear.
The conjecture "X, Y, Z and W are noncolinear" is always true when given that line segments XY and ZW intersect at point A. So option D is the correct answer.
When line segments XY and ZW intersect at point A, it means that X, Y, Z, and W do not all lie on the same line. Since they do not all lie on the same line, they are considered non-collinear.
The conjecture "XA = AY" is not always true. It is only true if the lines XY and ZW are perpendicular bisectors of each other. The conjecture "XAZ is acute" is not always true. It is only true if angle ZAY is obtuse, in which case angle XAZ would be acute. The conjecture "XY is perpendicular to XY" is not a valid conjecture because it is a statement that XY is perpendicular to itself, which is always true but not informative.So the correct answer is option D. X, Y, Z and W are noncolinear.
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Please Help I cant figure this out
The value of angle Y in the pentagon is 139°.
How to find the value of angle Y in the pentagon?
The sum of the interior angles of a polygon can be found using the formula:
sum of interior angles = (n - 2) * 180
where n is the number of sides of the polygon
A polygon with 5 sides is called pentagon. Thus, n = 5.
sum of interior angles = (5 - 2)*180 = 540°
Thus,
∠U + ∠W + ∠X + ∠Y + ∠Z = 540°
90 + 108 + 121 + ∠Y + 82 = 540
401 + ∠Y = 540
∠Y = 540 - 401
∠Y = 139°
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Jenelle draws one from a standard deck of 52 cards. Determine the probability of drawing either a two or a ten? Write your answer as a reduced fraction. Answer= Determine the probability of drawing either a two or a club? Write your answer as a reduced fraction. Answer=
The probability of drawing either a two or a ten is (4+4)/52, which simplifies to 2/13.
The probability of drawing either a two or a club is (3+13)/52, which simplifies to 4/13.
For the first question: In a standard deck of 52 cards, there are four 2s and four 10s. The probability of drawing either a two or a ten is the number of successful outcomes (drawing a 2 or a 10) divided by the total number of possible outcomes (52 cards). So, the probability is (4+4)/52 = 8/52. This can be reduced to the fraction 2/13.
For the second question: There are four 2s and thirteen clubs in a standard deck of 52 cards. Since one of the 2s is a club, there are three additional 2s that are not clubs. The probability of drawing either a two or a club is the number of successful outcomes (3 additional 2s + 13 clubs) divided by the total number of possible outcomes (52 cards). So, the probability is (3+13)/52 = 16/52. This can be reduced to the fraction 4/13.
Therefore,
1) Probability of drawing either a two or a ten: 2/13
2) Probability of drawing either a two or a club: 4/13
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Suppose the chance of rain on Saturday is 2/5
and the chance of rain on Sunday is also 2/5
. A student wants to run a simulation to estimate the probability that it will rain on both days.
How could the student model the chance of it raining on each day?
Multiple choice question.
cross out
A)
Toss a coin twice to represent a trial. Assign heads to represent rain.
cross out
B)
Roll a six-sided number cube twice to represent a full trial. Assign sides 1-3 as rain.
cross out
C)
Spin a spinner with five equal-size sections twice to represent a full trial. Assign two sections for rain.
cross out
D)
Spin a spinner with five equal-size sections twice to represent a full trial. Assign three sections for rain.
Part B
Suppose the table shows the results of 10 trials of a simulation. An “R” represents a day that it rained and an “N” represents a day it did not rain.
Trial 1 2 3 4 5 6 7 8 9 10
Saturday N R R N N R R N R N
Sunday N N R R N R N R R N
According to the results of the simulation, what is the experimental probability of having rain on both days? Express your answer as a percentage.
The student could model the chance of it raining on each day by
Spin a spinner with five equal-size sections twice to represent a full trial. Assign three sections for rain; Option DThe experimental probability of having rain on both days expressed as a percentage is 20%.
What is the experimental probability of having rain on both days?The experimental probability of having rain on both days can be determined using the probability formula given below as follows:
Experimental probability = number of trials with rain on both days / total number of trialsThe number of trials with rain on both days = 2 (Saturday and Sunday)
The total number of trials = 10
Experimental probability = 2 / 10
Experimental probability = 0.2 or 20%
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A car is purchased for $35,000. The owner finances the car at an interest rate of 4.6%, continuously compounded, for 6 years. What is the monthly payment on the car? Group of answer choices $640.62 $46,124.68 $35,046.00 $743.95
The monthly payment on the car is approximately $640.62. The correct option is A
To solve this problemThe formula for the monthly payment on a continuously compounded loan can be expressed as:
P = (r * A) / (1 - (1 + r)^(-n))
Where
P is the monthly payment r is the yearly interest rateA is the principal (i.e., the original amount borrowed) n is the number of payments (i.e., the number of years multiplied by 12)r is the annual interest rate (stated as a decimal and constantly compounded)Plugging in the given values, we get:
P = (0.046 * 35000) / (1 - (1 + 0.046/12)^(-6*12))
P ≈ $640.62
Therefore, the monthly payment on the car is approximately $640.62.
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2
How much water will a cone hold that has a diameter of 6 inches and a height of 21 inches.
Use 3. 14 for 7 and round your answer to the nearest whole number.
A 66 cubic inches
B 198 cubic inches
C) 594 cubic inches
D 2374 cubic inches
The volume of water a cone with a diameter of 6 inches and a height of 21 inches can hold is 198 cubic inches. So, the correct answer is B) 198 cubic inches.
To find the volume of water a cone with a diameter of 6 inches and a height of 21 inches can hold, we will use the formula for the volume of a cone: V = (1/3)πr²h.
Given a diameter of 6 inches, the radius (r) is 3 inches. The height (h) is 21 inches, and we will use 3.14 as an approximation for π.
V = (1/3) * 3.14 * (3²) * 21
V = (1/3) * 3.14 * 9 * 21
V = 3.14 * 3 * 21
V = 197.82 cubic inches
Rounding to the nearest whole number, the volume of water the cone can hold is approximately 198 cubic inches. Therefore, the answer is B) 198 cubic inches.
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The teacher could buy the shirt online 3.50 each she would also pay a fee of 9.50 for shipping the shirts.
The function that represents the total cost (y) of buying x shirt online of $3.50 each and shipping charges of $9.50 is 3.50x + 9.50 = y
Cost of each shirt = $3.50
The fee for shipping the shirts is = $9.50
Total number of shirts bought by shirt online = x
The total cost of buying x shirts is represented by y
The total cost will be the sum of each cost of the shirt and shipping charges
y = 3.50x + 9.50
Hence, the function that represents the total cost y of buying x shirt online of $3.50 each and shipping charges of $9.50 is 3.50x + 9.50 = y
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The question is incomplete complete question is :
The teacher could buy the shirt online at 3.50 each she would also pay a fee of 9.50 for shipping the shirts. Write a function that can be used to find y the total cost in dollars of buying x shirts online.
Complete parts a rough for the given function f(x) = -4°-x+2:1-4,4) A. The critical point(a) is(ro) ot x - (Simplify your answer. Use a comma to separate wwers as needed) B. The function does not have a critical point b. Use the First Derivative Test to locate the local maximum and minimum values Select the correct choice below and recessary in the answer box to complete your choice (Simplify your answer. Use a comma to separate arvwers as needed) BA The local maximum/maximal/are at OD. The local minimumiminimais/are OC. The local minimumin nima infare at and the local maximum maxima are at OD. There is no local munimum and there is no local maximum e Identify the absolute maximum and minimum values of the function on the given interval (when they st) Select the correct the below and the web.com your choice (Simplify your answer Uses comma to separato answers as needed) A The absolute maxim is al and the absolute minimumis More 8 10
The critical point is x = -1/2, the function has a local minimum at x = 1 and an absolute maximum at x = 4, and the absolute minimum is at x = -1/2.
How to find critical point?a. The critical point is x = -1/2.
To find the critical point(s), we need to find where the derivative of the function is equal to zero or undefined. In this case, we have:
f(x) = -4x - x^2 + 2
f'(x) = -4 - 2x
Setting f'(x) equal to zero, we get:
-4 - 2x = 0
-2x = 4
x = -2/2
x = -1
However, we need to check if this value is in the given interval (1-4, 4). Since -1 is not in the interval, it is not a critical point.
Next, we check the endpoints of the interval.
When x = 1, f(x) = -4 - 1^2 + 2 = -3.
When x = 4, f(x) = -4 - 4^2 + 2 = -22.
So the function has a local minimum at x = 1, and an absolute maximum at x = 4, and no local maximum.
How to find local maxima and minima?b. The local maximum is at x = 4, and the local minimum is at x = 1.
We can use the First Derivative Test to locate the local maximum and minimum points. If the derivative changes sign from positive to negative at a point, then it is a local maximum. If the derivative changes sign from negative to positive at a point, then it is a local minimum.
In this case, we have f'(x) = -4 - 2x. It is negative for x < -2 and positive for x > -2. Therefore, the function is decreasing for x < -2 and increasing for x > -2. Since the interval is (1-4, 4), the critical points are -2 and 4.
For x = 4, we have f'(4) = -4 - 2(4) = -12, which is negative, so x = 4 is a local maximum.
For x = 1, we have f'(1) = -4 - 2(1) = -6, which is negative, so x = 1 is a local minimum.
Therefore, the local maximum is at x = 4, and the local minimum is at x = 1.
How to found absouloute maxima and minima?c. The absolute maximum is at x = 4, and the absolute minimum is at x = -1/2.
To find the absolute maximum and minimum, we need to evaluate the function at the critical points and endpoints of the interval, and choose the largest and smallest values, respectively.
We have already found that the local maximum is at x = 4, and the local minimum is at x = 1. We also found that x = -1/2 is a critical point, but it is not in the given interval, so we can ignore it.
Evaluating the function at the endpoints of the interval, we get:
f(1) = -3
f(4) = -22
Therefore, the absolute maximum is at x = 4, and the absolute minimum is at x = 1/2.
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Find the absolute maximum and absolute minimum values off on each interval. (If an answer does not exist, enter DNE.) f(x) = -2x2²+ 8x + 400 (a) (-5, 11 ) Absolute maximum Absolute minimum: (b) (-5, 11 ) IN Absolute maximum: Absolute minimum: (C) (-5, 11) Absolute maximum: Absolute minimum:
The absolute maximum value of the function on the interval (-5, 11) is 670, which occurs at x = -5, and the absolute minimum value is approximately 400.847, which occurs at x ≈ 1.154.
To find the absolute maximum and minimum values of the function f(x) = -2x^3 + 8x + 400 on the interval (-5, 11), we need to consider the critical points and the endpoints of the interval.
First, we find the derivative of the function:
f'(x) = -6x^2 + 8
Setting f'(x) = 0 to find the critical points, we get:
-6x^2 + 8 = 0
x^2 = 4/3
x = ±√(4/3)
Since only √(4/3) is within the interval (-5, 11), this is the only critical point we need to consider.
Next, we evaluate the function at the endpoints of the interval:
f(-5) = -2(-5)^3 + 8(-5) + 400 = 670
f(11) = -2(11)^3 + 8(11) + 400 = -1666
Finally, we evaluate the function at the critical point:
f(√(4/3)) = -2(√(4/3))^3 + 8(√(4/3)) + 400 ≈ 400.847
Therefore, the absolute maximum value of the function on the interval (-5, 11) is 670, which occurs at x = -5, and the absolute minimum value is approximately 400.847, which occurs at x ≈ 1.154.
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RO Consider the convergent series (-1)" its sum s, and its partial sums n+1 84. That is, (-1)" and 8μ -Σ (-1)" n+1 RO NO 1. Is s - 85 going to be positive or negative? 2. Use the Alternating Series
The value of s - 85 cannot be determined based on the given information as we do not know the value of s.
Alternating Series Test states that if a series satisfies three conditions, namely the terms alternate in sign, the absolute value of the terms decreases as n increases, and the limit of the terms approaches zero as n approaches infinity, then the series converges.
The given series (-1)^n satisfies the first two conditions as the terms alternate in sign and the absolute value of the terms is decreasing. To check the third condition, we take the limit of the terms as n approaches infinity: lim n→∞ |(-1)^n+1/n+1| = lim n→∞ 1/(n+1) = 0.
Since all three conditions are satisfied, the series converges. We can also see from the given partial sums that the sum s lies between 83 and 85. Therefore, s - 85 is negative or zero.
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Find the surface area of the net below in square centimeter 12,9,9
A bike rental costs $8 per hour. Desiree has a coupon for 2 free hours. To find how many hours she can rent with $40, Desiree sets up the equation 8(x – 2) = 40, where x is the number of hours.
Drag equations into order to show a way to solve for x.
Answer:
8x - 16 = 40
8x = 56
x = 7
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A man spent 500 dollars on a shopping trip to Erewhon. If the milk costed 132 dollars and the chicken costed 220, how much did the fish cost?
Answer:148
Step-by-step explanation:
Assuming he only bought milk, fish and chicken.
220+132=352
500-352=148
Selena and Martin are waiting at the bus stop. The number lines show the number of minutes, t, Selena and Martin each expect to wait. A. Construct Arguments Who expects to wait longer? Justify your response with a mathematical explanation
Martin expects to wait longer than Selena. This can be Mathematically represented as: t > s
To determine who expects to wait longer, we need to compare the values on the number lines for Selena and Martin. Let's say Selena expects to wait for t minutes, and Martin expects to wait for s minutes. Looking at the number lines, we can see that Selena's expected wait time is closer to 10 minutes, while Martin's expected wait time is closer to 5 minutes. Therefore, we can say that Martin expects to wait longer than Selena.
Mathematically, we can represent this as:
t > s
This means that Selena's expected wait time is greater than Martin's expected wait time. Therefore, Martin expects to wait longer than Selena.
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The two-way frequency table shows the results of a survey of middle school students.
Find the probability that a randomly chosen student is a male who enjoys reading. Round
to the nearest thousandth.
Totals
Enjoys Reading
Female
Male
Enjoyment of Reading
Yes
No
40
30
15
30
55
60
70
45
Totals
115
The probability that a randomly chosen student is a male who enjoys reading P(male and enjoys reading) ≈ 0.261
To calculate the probability that a randomly chosen student is a male who enjoys reading, you need the number of males who enjoy reading divided by the total number of students.
The probability that a randomly chosen student is a male who enjoys reading can be found by dividing the number of males who enjoy reading by the total number of students.
From the table, we see that there are 30 males who enjoy reading and a total of 115 students. Therefore, the probability is:
P(male and enjoys reading) = 30/115
Rounding to the nearest thousandth, we get:
Therefore, The probability that a randomly chosen student is a male who enjoys reading P(male and enjoys reading) ≈ 0.261
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a professor gives his students 6 essay questions to prepare for an exam. only 4 of the questions will actually appear on the exam. how many different exams are possible?
The different possible exams for the 6 essay questions from which only 4 appear is equal to 15.
n is the total number of items in the set = 6 essay questions
r is the number of items we want to choose = 4 questions
Using combinations,
which is a way of counting the number of ways to choose a certain number of items from a larger set without regard to order.
Choose 4 out of the 6 essay questions, without regard to the order in which they appear on the exam.
Use the formula for combinations,
C(n, r) = n! / (r! × (n - r)!)
Plugging in the values, we get,
⇒C(6, 4) = 6! / (4! × (6 - 4)!)
⇒C(6, 4) = 6! / (4! ×2!)
⇒C(6, 4) = (6 × 5 × 4 × 3) / (4 × 3 × 2 × 1)
⇒C(6, 4) = 15
Therefore, there are 15 different exams possible, each consisting of 4 out of the 6 essay questions provided by the professor.
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What is the approximate volume of the cylinder? (Use 3. 14 as an approximation of pi. )
The approximate volume of the cylinder with a diameter of 14cm and height of 49cm is 10780.78 cubic centimeters, calculated using the formula V=πr²h.
To calculate the volume of a cylinder, we use the formula
Volume = πr²h
where π is pi, r is the radius of the cylinder, h is the height of the cylinder.
We are given the diameter of the cylinder, which is 14 cm. The radius of the cylinder is half of the diameter, so
radius = diameter / 2 = 14 cm / 2 = 7 cm
The height of the cylinder is given as 49 cm.
Now we can use the formula to find the volume of the cylinder
Volume = πr²h = 3.14 x 7² x 49 = 10780.78 cubic centimeters (rounded to two decimal places)
Therefore, the approximate volume of the cylinder is 10780.78 cubic centimeters.
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--The given question is incomplete, the complete question is given
" What is the approximate volume of the cylinder? when diameter is 14cm height is 49cm (Use 3. 14 as an approximation of pi. )"--
Which expression is equivalent to 3x – (2x + 4) + 5?
Responses
The expression that is equivalent to 3x – (2x + 4) + 5 is x+1 ( optionB)
What is equivalent of expression?Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value.
For example , 2a+6a is equivalent to 2a( 1+3) and they will surely have the same value when a value is replaced with a
3x – (2x + 4) + 5 = 3x-2x-4+5
= x-4+5
= x +1
therefore the equivalent of 3x – (2x + 4) + 5 is x+1
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