The sum of the convergent series is \(16/5 + 64/225 + 16/225 + ...\)
First, we need to factor the denominator:
\(9n^2 + 3n - 2 = (3n - 1)(3n + 2)\)
Then, we can write the fraction 8/(9n^2 + 3n - 2) as a sum of two fractions with unknown coefficients A and B:
\(8/(9n^2 + 3n - 2) = A/(3n - 1) + B/(3n + 2)\)
Multiplying both sides by the common denominator (3n - 1)(3n + 2), we get:
\(8 = A(3n + 2) + B(3n - 1)\)
Now, we can solve for A and B by plugging in convenient values of n. For example, when n = 1/3, we get:
\(8 = A(1) + B(2/3) \)
Solving for A and B, we get A = 32/5 and B = -16/5.
Therefore, we can rewrite the original series as:
sigma^infinity\( _n = 1 8/(9n^2 +3n-2) = sigma^infinity _n = 1 (32/5)/(3n - 1) - (16/5)/(3n + 2)\)
Now, we can use the fact that the series sigma^infinity _n = 1 1/n^p converges if and only if p > 1, to conclude that both of the series on the right-hand side converge.
Thus, the sum of the original series is equal to the sum of the two series on the right-hand side:
sigma^infinity \(_n = 1 8/(9n^2 +3n-2) = sigma^infinity _n = 1 (32/5)/(3n - 1) - (16/5)/(3n + 2) \)
To find the exact value of the sum, we can use the formula for the sum of a geometric series, which gives:
sigma^infinity\( _n = 1 (32/5)/(3n - 1) = (32/5)(1/2 + 1/5 + 1/8 + ...) \)
and
sigma^infinity\( _n = 1 (16/5)/(3n + 2) = (16/5)(1/5 + 1/8 + 1/11 + ...) \)
Combining these two series, we get:
sigma^infinity\( _n = 1 8/(9n^2 +3n-2) = (32/5)(1/2 + 1/5 + 1/8 + ...) - (16/5)(1/5 + 1/8 + 1/11 + ...) \)
which simplifies to:
sigma^infinity \(_n = 1 8/(9n^2 +3n-2) = 16/5 + 64/225 + 16/225 + ... \)
Therefore, the sum of the convergent series is \(16/5 + 64/225 + 16/225 + ...\)
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440 customers at an ice cream shop took a survey and rated it "very satisfactory". This represented 22% of the total number. How many total customers took the survey?
Answer:
2000
Step-by-step explanation:
440 customers are 22% of total meaning there is 78% left.
440*100=44,000 44,000/22=2,000
Can someone help answer this please
(question in picture
Write the equation of the line through the indicated pol \[ m=\frac{2}{7} ;(7,-8) \]
The equation of the line passing through the point (7, -8) with a slope of 2/7 is y = (2/7)x - (58/7).
To find the equation of a line, we can use the slope-intercept form: y = mx + b, where m represents the slope and b represents the y-intercept. In this case, the slope (m) is given as 2/7, and we have a point (7, -8) on the line.
We can substitute the values of the slope (2/7) and the coordinates of the point (7, -8) into the slope-intercept form equation. Let's start by finding the value of b, the y-intercept:
-8 = (2/7)(7) + b
Simplifying the equation:
-8 = 2 - (14/7) + b
-8 = 2 - 2 + b
-8 = b
Now that we have the y-intercept (b = -8), we can write the equation of the line:
y = (2/7)x - 8
Therefore, the equation of the line passing through the point (7, -8) with a slope of 2/7 is y = (2/7)x - (58/7).
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Pls answer need soon help help
Answer:
14:8 = 7:4 =28:16
Step-by-step explanation:
equivalent ratio:
14:8 = 7:4 =28:16
Divide.
1.156÷106
whoever helps me first gets brainlest
Answer: 0.01090566037
Answer: The short answer to this is 0.0109
The second term of an exponential sequence is 9 while the forth term is 81 find the sum of the 3rd term and the forth term
The third term and fourth term has a sum of 108.
How to find sum of third and fourth term?Let's use the formula for the nth term of an exponential sequence:
\(a_n = a_1 * r^{(n-1)}\)
where \(a_1\) is the first term, r is the common ratio, and n is the term number.
We're given that the second term is 9, so we know:
\(a_2 = a_1 * r = 9\)
We're also given that the fourth term is 81, so we know:
\(a_4 = a_1 * r^3 = 81\)
We can use the equation for \(a_2\) to solve for \(a_1\):
\(a_1 * r = 9\\a_1 = 9 / r\)
Substituting this expression for \(a_1\) into the equation for \(a_4\), we get:
\((9 / r) * r^3 = 81\\r^2 = 9\\\)
r = 3 or r = -3
Since we have a common ratio, we can find the third term using either value of r:
\(a_3 = a_2 * r = 9 * 3 = 27\)
Now we can find the sum of the third and fourth terms:
\(a_3 + a_4 = 27 + 81 = 108\)
Therefore, the sum of the third term and fourth term is 108.
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I forget how to do this problem, little help-?
X=4
Please mark brainliest
2. A pair of jeans is on sale for 25% off the original price. Which expression represents the sale
price? If the original price of the jeans is $40, evaluate the expression to find the sale price.
Os=p-0.25p; $30
Os=p-25; $15
Os=p-0.25p; $10
Os p-0.25; $39.75
Answer: s = p - 0.25p; $30
Step-by-step explanation:
First, we need to know that a percent divided by 100 becomes a decimal.
25% / 100 = 0.25.
Next, we will use this equation because it takes 25% off of the original price (p) by subtracting 0.25p from p.
s = p - 0.25p
Lastly, we will substitute 40 in for 0 and solve.
s = ($40) - 0.25($40)
s = $30
Use the graph of g(x) to complete the table.
I need help finding Z
Answer:
the angle is 80° ,, for sure .
What is the measure of AngleSRT?
Triangle S R T. Angle S is 53 degrees and angle T is 48 degrees.
69 degrees
79 degrees
99 degrees
101 degrees
Answer:
Angle SRT is equal to 79 degrees
Step-by-step explanation:
The reason this is so is because for every single triangle all the angles must add up to 180 degrees. So take 180 minus angle T, and then minus angle S and you get 79.
Answer:
B
Step-by-step explanation:
just need to keep my streak up
If a figure is a square, its diagonals divide it into isosceles triangles.
p: A figure is a square.
q: A figure's diagonals divide into isosceles triangles.
Which represents the converse of this statement? Is the converse true?
The converse of the statement "If a figure is a square, its diagonals divide it into isosceles triangles" would be:
"If a figure's diagonals divide it into isosceles triangles, then the figure is a square."
The converse statement is not necessarily true. While it is true that in a square, the diagonals divide it into isosceles triangles, the converse does not hold. There are other shapes, such as rectangles and rhombuses, whose diagonals also divide them into isosceles triangles, but they are not squares. Therefore, the converse of the statement is not always true.
Therefore, the converse of the given statement is not true. The existence of diagonals dividing a figure into isosceles triangles does not guarantee that the figure is a square. It is possible for other shapes to exhibit this property as well.
In conclusion, the converse statement does not hold for all figures. It is important to note that the converse of a true statement is not always true, and separate analysis is required to determine the validity of the converse in specific cases.
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a new machine requires an investment of $630,000 and will generate $100,000 in cash inflows for 7 years, at which time the salvage value of the machine will be $130,000. using a discount rate of 10%, the net present value of the machine is rounded to the nearest dollar is $
The net present value of the machine is rounded to the nearest dollar is $-76,447.56.
Net gift fee is the prevailing fee of after-tax coins flows from an funding much less the quantity invested.
NPV may be calculated the usage of a economic calculatorCash float in YO = -630,000Cash float in Y1 - Y6 = 100,000Cash float in Y x (7 = 100000 + 130000)I =10%nDv =$-76.447.56To discover the NPV the usage of a economic calculator: Input the coins float values with the aid of using urgent the CF button. After inputting the fee, press input and the arrow dealing with a downward direction.After inputting all of the coins flows, press the NPV button, enter the fee for I, press input and the arrow dealing with a downward direction.Read more about investment :
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Hi!! Can you help me with this math problem? UvU okaayy TYYY!!
Which statement is not true for the parabola who equation is y= 2x^2- 12x +29
- The parabola opens upward
- The vertex is ( -3, 11)
- The axis of symmetry is x= 3
- The parabola contains the point ( 1, 19)
Again, thank q sm for helpingggg <3 I will give brainliest and Thanks hehe
Answer:
I just graphed it in desmos for you UvU
The second answer is false. The vertex is not (-3, 11). The vertex is (3, 11). I can see that the parabola has a point of (1, 19), and the parabola opens upward, as well as has an axis of symmetry; x = 3.
Hope that helps
A professor wants to compare the variances of scores between two sections of c esses The students in each section took the same test The random samples 16, respectively. which of the following is a 99% confidence interval for the ratio ofthe population variances? eld sample variances of 20315 end -474 42 for samples of n1-13 and n2- a. [01540, 27809] b. [01386, 30895] c. [0.0907, 1.8198]
d. [01008, 20217]
Using f -statistic value relationship with population variation , the ratio of population variance lie in interval [0.1008,2.021].
0.1008 <σ₁²/σ₂²< 2.021
So, the correct option is option( d).
A professor wants to compare the variances of scores between two sections of classess.
we have
sample size for first class score (n₁) = 13
sample size for second class score (n₂) = 16
confidence interval is 99%
sample variance of first sample (s₁²) = 203.25
sample variance of second sample (s₂²)= 474.42
Using the relationship
( s₁² /s₂² )/F₁₋ₐ/₂ < σ₁²/σ₂²< ( s₁²/s₂²)/Fₐ/₂
a = 0.005
F at (1- a/2) or F₀.₉₉₅, ₁₃,₁₆= 4.249
F at a/2 or F₀.₀₀₅,₁₃, ₁₆ = 0.2118
plugging all known values in above formula
=> ( 203.25/474.42)/4.249<σ₁²/σ₂²< (203.25/474.42)/0.2118
=> 0.1008 <σ₁²/σ₂²< 2.021
=> σ₁²/σ₂² ∈[0.1008,2.021]
Hence, the ratio of population variance lies between interval [0.1008,2.021].
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what is the place value of 5 in 4.053?
Answer:
The place value of 5 in 4.053 is Hundredth
The place value of 5 in the given number 4.053 is, hundredths
What are place values?In mathematics, we have assigned a name for each digit in a number, which are known as place values. Place values are Ones, Tens, Hundreds, Thousands.
Given number,
⇒ 4.053
we can write it as,
⇒ 4 ≡ at ones
⇒ 0 ≡ at tenths
⇒ 5 ≡ at hundredths
⇒ 3 ≡ at thousandths
So, the place value of 5 is hundredths
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If i toss a fair coin five times and the outcomes are ttttt, then the probability that tails appears on the next toss is.
The probability that tails appears on the next toss is 0.5
Given,
In the question:
If I toss a fair coin five times and the outcomes are TTTTT,
To find the probability that tails appears on the next toss is.
Now, According to the question:
The possible ordered outcomes are listed as elements in a sample space, which is commonly indicated using set notation.
A sequence of five fair coin flips has a sample space that contains all potential outcomes. \(2^3\) {H, T} is the sample of a fair coin toss. {HHHHH, HHHHT, HHHTH, HHTHH, HTHHH,...…TTTTT} .
The probability of a tails result on the next flip is always equal to 0.5 It makes no difference if previous outcomes were {TTTTT} , {HHHHH} or {THTHT} In each of these and all other circumstances, the probability of the next being tails is still 0.5
Hence, the probability that tails appears on the next toss is 0.5
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A curbside pickup facility at a grocery store takes an average of 3 minutes to fulfill and load a customer's order. On average 6 customers are in the curbside pickup area. What is the average number of customers per hour that are processed in the curbside pickup line? Show calculations. (Use Little's law).
Answer:
120 customers per hour
Step-by-step explanation:
You want to know the processing rate in customers per hour if there are an average of 6 customers waiting, and the average service time is 3 minutes.
Little's LawLittle's law relates the average queue depth to the response time and the average throughput:
mean response time = mean number in system / mean throughput
Solving for the throughput, we find ...
throughput = (number in the system)/(response time)
throughput = (6 customers)/(3/60 hours) = 120 customers/hour
The average rate of processing is 120 customers per hour.
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The diameter of a hydrogen atom is about 1.05 cross times 10 to the power of negative 10 end exponentmeters. a protein molecule has an overall length of 3000 times (or 3 cross times 10 cubed times) the diameter of a hydrogen atom. what is the length of the protein molecule, in meters, if it were written in scientific notation?
The length of the protein molecule, in meters, is 208 × 10⁻⁹m.
What is an atom?An atom is a matter particle that defines a chemical element uniquely. An atom is made up of a central nucleus and one or more negatively charged electrons. The nucleus is positively charged and contains one or more protons and neutrons, which are relatively heavy particles.To find the length of the protein molecule:
Diameter of hydrogen atom = 104 × 10⁻¹⁰m
We are given that A protein molecule has an overall length of 2000 times (or 2 cross times 10 cubed times) the diameter of a hydrogen atom.
Length of protein molecule = 2000 × Diameter of the hydrogen atomLength of protein molecule = 2 × 10⁺³ × 1.04 × 10⁻¹⁰Length of protein molecule = 2 × 1.04 × 10⁻¹⁰⁺³Length of protein molecule = 2 × 1.04 × 10⁻⁷Length of protein molecule = 2.08 × 10⁻⁷Length of protein molecule = 208 × 10⁻⁷⁻²Length of protein molecule = 208 × 10⁻⁹mTherefore, the length of the protein molecule, in meters, is 208 × 10⁻⁹m.
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The correct question is given below:
The diameter of a hydrogen atom is about 1.04 cross times 10 to the power of negative 10 end exponent meters. A protein molecule has an overall length of 2000 times (or 2 cross times 10 cubed times) the diameter of a hydrogen atom. What is the length of the protein molecule, in meters, if it were written in scientific notation?
Find the value of W
Answer:
\(\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}\)
\(sum \: of \: angles\: of \: a \: polygon \: = \\(n - 2) \times 180\degree\)
in the question , we've been given a five sided figure , i.e. , a pentagon.
sum of angles of a pentagon = ( 5 - 2 ) × 180°
\(\implies \: 3 \times 180\degree \\ \implies \: 540\degree\)
thus we can say that ,
angle sum property of pentagon states that the sum of all the angles of a pentagon equals 540°.
therefore ,
Step-by-step explanation:
\(125\degree + 117\degree + (x + 6)\degree + x + (x - 44)\degree = 540\degree \\ \\ 125\degree + 117\degree + x + 6\degree + x + x - 44\degree = 540\degree \\ \\ 204\degree + 3x = 540\degree \\ \\ 3x = 540\degree - 204\degree \\ \\ 3x = 336\degree \\ \\ x = \cancel\frac{336}{3} \\ \\ x = 112\degree\)
hope helpful ~
\({\huge{\fcolorbox{purple}{blue}{\red{\boxed{\boxed{\boxed{\boxed{\underbrace{\overbrace{\mathfrak{\pink{\fcolorbox{green}{yellow}{Answer}}}}}}}}}}}}}\)
To find :-
The value of x in the angles of Pentagon
Given :-
Here we have been provided 5 angles in Pentagon
x°, (x - 44)°, (x + 6)°, 125°, and 117°
Solution :-
We will find the value of x with the angle sum property.
Now, we will find the sum of angles of Pentagon
there is a formula
(n - 2) × 180°
n = no. of sides of above shape
here n = 5
(5 - 2) × 180°
3 × 180° = 540°
Now will add the above given angle in the diagram and put equal to 540°.
x° + (x - 44)° + (x + 6)° + 125° + 117° = 540° (angle sum property)
\(3x + 204{\degree} = 540{\degree} \\ 3x = 540{\degree} -204{\degree} \\ 3x = 336{\degree} \\ x = \frac{336{\degree}}{3} \\ x = 112{\degree}\)
x = 112°
further we will find further 2 angles related to x.
x - 44 = 112 - 44 = 68°
x + 6 = 112 + 6 = 118°
Result :-
The all angles of Pentagon are
125°, 117°, 118°, 112°, and 68°.
we have not defined the space c 1 (s 1 ) of continuously differentiable real valued functions with domain the unit circle. how would you define such a space? g
The space C1(S1) is a Banach space, which means it is a complete normed vector space, equipped with the norm ||f|| = sup{|f(θ)| + |f'(θ)| : θ ∈ S1}.
The space C1(S1) is the space of continuously differentiable real-valued functions defined on the unit circle S1, which is a subset of the complex plane given by the equation |z| = 1, where z is a complex number.
Specifically, a function f: S1→R belongs to C1(S1) if it has a continuous first derivative f': S1→R that also belongs to C(S1), the space of continuous real-valued functions defined on S1.
Formally, we can define the space C1(S1) as follows:
C1(S1) = {f: S1→R | f is continuously differentiable on S1 and f' belongs to C(S1)}
Here, f' denotes the first derivative of f, which is defined as the limit:
f'(θ) = lim [f (θ + h) - f(θ)]/h
h→0
for all θ in S1
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In rectangle QRST, diagonals QS and RT are drawn and intersect at point. Which of the following statements must be true?
Answer: QPR must be congruent to SPT
Step-by-step explanation:
3. A chessboard is covered by 64 squares that are of the same size.
(a) How many squares fit along the side of the chest board?
b) How many squares fit along the perimeter of the chessboard
Gravel is being dumped from a conveyor belt at a rate of 50 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always equal. How fast is the height of the pile increasing when the pile is 24 feet high? Recall that the volume of a right circular cone with height h and radius of the base r is given by V = 1 3 π r 2 h
Answer:
Step-by-step explanation:
Given f1(x), f2(x), f3(x),f4(x) which make up a set. Which of the following describes the set being linearly dependent?
A. f2(x)=c1 f1(x)+c2 f3(x)+c3 f4(x)
B. f(x)=f1(x)+2f2(x)−3f3(x)+f4(x)
C. the Wonskian is not equal to zero D. The functions are not multiples of each other
The correct option that describes the set being linearly dependent is option A: f2(x) = c1 f1(x) + c2 f3(x) + c3 f4(x).
If one of the functions in the set can be expressed as a linear combination of the other functions, it implies that the set is linearly dependent. In option A, f2(x) can be written as a linear combination of f1(x), f3(x), and f4(x), indicating that the set is linearly dependent.
Option B does not necessarily imply linear dependence, as it represents a specific linear combination of the functions rather than one function being a linear combination of the others.
Option C refers to the Wronskian, which is a concept used to test linear independence of functions, but its value not being zero does not necessarily imply linear dependence.
Option D, stating that the functions are not multiples of each other, does not provide enough information to determine linear dependence or independence.
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A news story needs to be shared 1,500,000 times to get featured on a talk show. The exponential model y=5·\(7^{x}\) represents the number of shares, y, a news story receives in x days.
About how many days will it take for a news story to reach 1,500,000 shares? Round your answer to the nearest day.
Responses
25 days
6 days
12 days
20 days
The number of days it would take for a news story to reach 1,500,000 shares include the following: B. 6 days.
What is an exponential function?In Mathematics and Geometry, an exponential function can be modeled by using this mathematical equation:
\(f(x) = a(b)^x\)
Where:
a represents the initial value or y-intercept.x represents x-variable.b represents the rate of change, common ratio, decay rate, or growth rate.Based on the information provided above, the number of shares this news story can be modeled by the following exponential function;
\(y = 5(7)^x\\\\1500000=5(7)^x\\\\300000=(7)^x\)
By taking the natural log (ln) of both sides of the equation, we have:
Time, x = 6.4 ≈ 6 days.
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a university student is selecting courses for his next semester. he can choose from humanities courses and science courses. in how many ways can he choose courses if or more must be humanities courses?
a university student is selecting courses for his next semester. he can choose from humanities courses and science courses. the number of ways in which he can choose courses if or more must be humanities courses can be found using combinations
C(h, r) + C(h, r+1) + C(h, r+2) + ... + C(h, h)
To determine the number of ways a university student can choose courses for the next semester with a requirement of at least "r" humanities courses, we can use combinatorial techniques.
Let's assume there are "n" total courses available, "h" of which are humanities courses, and "s" of which are science courses.
The student needs to select "r" or more humanities courses. We can calculate the number of ways to choose "r" or more humanities courses by summing the combinations for "r" to "h" humanities courses.
The formula to calculate the number of ways to choose "k" items from a set of "n" items is given by the combination formula: C(n, k) = n! / (k! * (n - k)!)
Using this formula, the calculation for the number of ways to choose "r" or more humanities courses can be expressed as:
Number of ways = C(h, r) + C(h, r+1) + C(h, r+2) + ... + C(h, h)
Now, let's substitute the values and calculate the number of ways:
Number of ways = C(h, r) + C(h, r+1) + C(h, r+2) + ... + C(h, h)
In conclusion, the number of ways the university student can choose courses, with a requirement of at least "r" humanities courses, is obtained by summing the combinations for "r" to "h" humanities courses using the combination formula.
the number of ways in which he can choose courses if or more must be humanities courses can be found using combinations
C(h, r) + C(h, r+1) + C(h, r+2) + ... + C(h, h)
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Average employee salary?
Answer:
$67,680
Step-by-step explanation:
average is calculated as
average = \(\frac{sum}{count}\)
Denver
\(\frac{sum}{137}\) = 67,013 ( multiply both sides by 137 )
sum = 9,180,781
Anchorage
\(\frac{sum}{25}\) = 71,332 ( multiply both sides by 25 )
sum = 1,783,300
total sum for both = $9,180,781 + $1,783,300 = $10,964,081
then average salary across both companies is
average = \(\frac{10,964,081}{162}\) = $67,680 ( to the nearest dollar )
I HAVE AN URGENT QUESTIONS!!!!
Thus, the area of the rectangular playground is found as 1500 sq. ft.
Explain about the area of rectangle:A parallelogram with four opposing, parallel, congruent sides is referred to as a rectangle. The rectangle's corners are at a right angle. The fact that a rectangle's sides are not all equal is the only distinction between it and a square.
A two-dimensional shape's area is the interior blank space. The quantity of space that a shape occupies is another way to define area. When calculating a rectangle's area, we multiply the length by the width of a rectangle.
Given that-
Perimeter P = 160 feetLength l = 50 feetLet the width = w feet.P = 2(l + w)
160 = 2 (50 + w)
80 = 50 +w
w = 80 - 50
w = 30 feet
area = length* width
area = 50*30
area = 1500 sq. ft
Thus, the area of the rectangular playground is found as 1500 sq. ft.
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Correct question-
The perimeter of the playground shown is 160 feet. Find the area.
Length is 50 ft.
What is the vertex of the parabola with equation y = 3x2 + 1?
Answer:
Step-by-step explanation: