P is a function that gives the cost, in dollars, of mailing a letter from the United States to Mexico in 2018 based on the weight of the letter in ounces, w. The function is defined by this set of rules:
The function is defined by this set of rules and we got the cost of mailing a letter weighing 2.5 ounces from the United States to Mexico in 2018 using function P is $2.89.
Based on the rules, the function P is defined as follows:
P(w) = 1.15, if 0 < w ≤ 1
P(w) = 1.99, if 1 < w ≤ 2
P(w) = 2.89, if 2 < w ≤ 3
P(w) = 3.30 + 0.45(w-3), if 3 < w
This function gives the cost, in dollars, of mailing a letter from the United States to Mexico in 2018 based on the weight of the letter in ounces, w.
To find the cost of mailing a letter weighing 2.5 ounces using function P, we need to evaluate P(2.5). Based on the rules defined above, we can see that 2 < 2.5 ≤ 3. Therefore, the cost of mailing a letter weighing 2.5 ounces would be:
P(2.5) = 2.89
So, it would cost $2.89 to mail a letter weighing 2.5 ounces from the United States to Mexico in 2018 using function P.
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Calculate the volume of each of these prisms.
The volume of the given prisms above is calculated as follows:
a.) = 432m³
b.) = 135m³
C.) = 1,332m³
How to calculate the volume of the prisms?For prism a:
Divide the prism to get two solid shapes and then add up the calculated volumes of each.
Vol of First shape = length× width× height
H = 12m
w = 4m
L = 7m
Vol = 12×4×7 = 336m³
Vol of second shape ;
=2( 4×4×3)
= 2 × 48
= 96m³
Therefore the volume of prism A = 336+96 =432
For prism b:
Volume= BH
B = area of the base
H = height of the prism
Volume = 1/2×5 × 6 × 9
= 5×3×9
= 135m³
For prism C:
Divide the prism to get two solid shapes and then add up the calculated volumes of each.
Vol of first shape = 5×15×12 = 900m³
Vol of second shape;
=2(6×12×3)
= 2(216)
= 432 m³
Volume of prism C = 900+432
= 1,332m³
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Grant borrowed $5,300 to remodel his bathroom and agreed to make 30 monthly payments of $235. He paid the debt in full after 24 months. Find the amount needed to repay the loan in full using the Rule of 78.
Multiple Choice
$1,330.97
$1,410.00
$7,050.00
$176.67
$1330.97 is the amount needed to repay the loan in full using the Rule of 78.
What is interest?In finance and ecοnοmics, interest is payment frοm a bοrrοwer οr depοsit-taking financial institutiοn tο a lender οr depοsitοr οf an amοunt abοve repayment οf the principal sum, at a particular rate. It is distinct frοm a fee which the bοrrοwer may pay the lender οr sοme third party.
We wοuld subract interest saved frοm the tοtal payment which Grant wοuld have tο pay if he cοntinued the lοan fοr 30 mοnths :
7050-79.03= $6970.97
The Amοunt οf mοney Grant have already paid fοr 24 mοnths
= 24*235= $5640
The amοunt needed tο repay the lοan in full
= 6970.97 - 5640 = $ 1330.97
Thus, option a $ 1330.97 is correct.
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the numbers of parts produced by three different machines are shown in the table minutes 1,3,9 machine Q 9, 18,72 machine R 8,24,72 machine S 6,18,52 only one of the machines produces parts at a constant rate rate an equation that can be used to represent Y the number of parts produced in X minutes for that machine write the equation
Hence, Y = 8X represents the equation for the quantity of parts generated by machine R.
what is equation ?Variables, numbers, and mathematical operations like addition, subtraction, multiplication, and division are frequently included. Equations are used in many disciplines, including physics, engineering, economics, and finance, to describe connections between quantities and to solve problems. For instance, the formula "2x + 5 = 11" states that the number 11 is equal to the sum of the two variables x and 5. We can determine that x equals 3 by finding a solution for x. On the basis of mathematical relationships, equations enable us to locate unknown values and create predictions.
given
We must evaluate the supplied data and search for trends to ascertain which machine generates parts at a steady rate. Calculating the ratio of parts produced for each machine over time and checking to see if the ratios are stable are two methods for achieving this.
The ratios for machine Q are:
9/1 = 9
18/3 = 6
72/9 = 8
Machine Q doesn't create parts at a constant rate since the ratios are inconsistent.
The ratios for machine R are:
8/1 = 8
24/3 = 8
72/9 = 8
As a result of the constant ratios, machine R consistently produces parts.
The ratios for machine S are:
6/1 = 6
18/3 = 6
52/9 ≈ 5.78
Machine S does not generate parts at a constant rate because the ratios are inconsistent.
As a result, we may formulate the following equation to represent the components made by machine R:
Y = kX
where k represents the machine R's constant rate of production and Y represents the quantity of components produced in minutes. Any of the ratios calculated above can be used to determine the value of k:
8 pieces per minute equals k.
Hence, Y = 8X represents the equation for the quantity of parts generated by machine R.
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the australian sheep dog is a breed renowned for its intelligence and work ethic. it is estimated that 45% of adult australian sheep dogs weigh 65 pounds or more. a sample of 16 adult dogs is studied. what is the probability that no more than 3 of them weigh 65 lb or more?
The probability that no more than 3 of them weigh 65 lb or more is 0.0165 (approximately).
The Australian Sheep Dog is a breed renowned for its intelligence and work ethic. It is estimated that 45% of adult Australian Sheep Dogs weigh 65 pounds or more. A sample of 16 adult dogs is studied. We need to determine the probability that no more than 3 of them weigh 65 pounds or more. Solution:Step 1The number of trials (n) is 16. The probability of success in one trial is p = 0.45. The probability of failure is q = 1 - p = 1 - 0.45 = 0.55.Step 2We need to find the probability that no more than 3 of them weigh 65 lb or more.P(X ≤ 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X distribution with parameters n = 16 and p = 0.45.Using the binomial probability formula,P(X = k) = nCk * pk * q(n - k)P(X ≤ 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)= 16C0 * 0.45^0 * 0.55^16 + 16C1 * 0.45^1 * 0.55^15 + 16C2 * 0.45^2 * 0.55^14 + 16C3 * 0.45^3 * 0.55^13≈ 0.0165 (rounded to 4 decimal places)Therefore, the probability that no more than 3 of them weigh 65 lb or more is 0.0165 (approximately).
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y = -6x + 8
y = 5x - 4
Step-by-step explanation:
Both of the expressions equal y....equate them
-6x + 8 = 5x-4
12 = 11x
x = 12/11 = 1 1/11
then y = 5x -4 = 5(12/11) - 4 = 1 5/11
( 1 1/11 , 1 5/11 )
What is the inverse of the logarithmic function
f(x) = log2x?
f –1(x) = x2
f –1(x) = 2x
f –1(x) = logx2
f –1(x) = StartFraction 1 Over log Subscript 2 Baseline x EndFraction
Answer: The inverse of the logarithmic function f(x) = log2x can be found by interchanging the roles of x and y in the function and solving for y. The steps are as follows:
Step 1: Replace f(x) with y.
y = log2x
Step 2: Interchange x and y.
x = log2y
Step 3: Solve for y.
We need to isolate y on one side of the equation. To do this, we can rewrite the equation in exponential form. Recall that the logarithmic function with base b is defined as follows:
logb(x) = y if and only if b^y = x.
Using this definition, we can rewrite the equation x = log2y as follows:
2^x = y
This means that the inverse of f(x) = log2x is given by:
f –1(x) = 2^x
Therefore, the correct answer is:
f –1(x) = 2^x.
Step-by-step explanation:
Mr. Bonet has a fair coin labeled “heads” and “tails.” He will flip the coin 6 times and record his results. What is the probability that the coin will land face-up on “tails” on all six flips?
1/2
1/12
1/6
1/64
The calculated probability of the coin landing face-up on "tails" on all six flips is 1/64.
Calculating the probability of tails 6 timesThe probability of getting tails on a single flip of a fair coin is 1/2. Since each flip is independent of the others, the probability of getting tails on all six flips is:
P = (1/2) x (1/2) x (1/2) x (1/2) x (1/2) x (1/2)
When evaluated, we get
P = 1/64
Therefore, the probability of the coin landing face-up on "tails" on all six flips is 1/64.
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Evaluate f3 + 11g-4h when f = 3,g=2 and h=7
Answer:
Step-by-step explanation:
Find an equation of the circle with radius √21 and centre (0,0).
Answer:
Step-by-step explanation:
Center-radius equation for circle of radius r, centered at (h,k):(x−h)2+(y−k)2=r2
(h,k)=(0,0) and r=11−−√:
x2+y2=11
find the area of this semi-circle with radius, r=98cm. give your answer to 1dp
an online subscription service has calculated the ratio of expired subscriptions to active subscriptions and found that the ratio is 0.42 to 1. what does this ratio mean?
The given ratio of 0.42 to 1 means that for every 1 active subscription, there are 0.42 expired subscriptions.
What is a ratio?
The ratio is a comparison of two quantities that is expressed as a fraction. It is used to compare two values in mathematics. It is possible to write the ratio between a and b as:
a : b or a/b.
What does a ratio of 0.42 to 1 mean? The ratio of 0.42 to 1 means that there are 0.42 expired subscriptions for every 1 active subscription. It is worth noting that the ratio is less than 1, indicating that there are fewer expired subscriptions than active subscriptions.
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Giving brainliest.please help asap
The minimum value is 16 , the maximum value is 50, the first quartile is 20, the third quartile is 38 and the median is 24.
The box plot that represents the dataset is the second box plot.
What is the five number summary?The numbers would first be rearranged in ascending order. The numbers arranged in ascending order is:
16, 18, 22, 23, 25, 32, 43, 50
The five number summary are the median, minimum, first quartile, third quartile and maximum.
Median = (n + 1) / 2 = (8 + 1) / 2 = 4.5th term = (23 + 25) / 2 = 24
Minimum = 16
Maximum = 50
First quartile = (n + 1) / 4 = (8 + 1) / 4 = 2.25 term = 20
Third quartile = 3/4 x (n + 1) = 3/4 x (9/4) = 6.75th term = 38
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Are these triangles similar, congruent, or neither? What theorem supports your answer?
options:
Similar: SSS
Similar: SAS
Similar: AA
Congruent: SSS
Congruent: ASA
Congruent: SAS
Neither
Triangles are similar by SSS rule.
Define triangle similarlity ruleThe triangle similarity rule states that if two triangles have corresponding angles that are congruent, then the triangles are similar. This means that their corresponding sides are proportional in length. More formally, if two triangles ABC and DEF are similar, then:
The corresponding angles are congruent: ∠A ≅ ∠D, ∠B ≅ ∠E, ∠C ≅ ∠F.
The corresponding sides are proportional: AB/DE = BC/EF = AC/DF.
Similar triangles can also be used to find the height of tall objects or the distance between two objects of known height, using the angle of elevation and the properties of similar triangles.
In the Triangle ABC and CDA;
AB=CD(Given)
BC=AD(Given)
AC=AC(sides are common)
Hence, Triangles are similar by SSS rule.
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Suppose you see a net for a rectangular prism and a net for a rectangular pyramid.explain how you can match each net with its name
A rectangular pyramid has a rectangular base and four triangular faces that meet at a common vertex.
To match each net with its name, we need to understand the basic properties of both rectangular prism and rectangular pyramid.
A rectangular prism is a 3D shape that has six faces, and each face is a rectangle. A rectangular pyramid is also a 3D shape, but it has a rectangular base and four triangular faces that meet at a single point.
It consists of six rectangles connected along their edges to form a box-like structure.
On the other hand, the net for a rectangular pyramid is also a flat pattern, but it consists of a rectangle and four triangles attached to the edges of the rectangle.
To match each net with its name, we need to compare the features of both nets with the basic properties of both shapes. If we observe the net for a rectangular prism, we can see that it has six rectangles, which represents the six faces of the rectangular prism.
Also,
The edges of each rectangle connect with other rectangles in such a way that it forms a box-like structure. Hence, the net with six rectangles is the net for the rectangular prism.
The net for a rectangular pyramid consists of a rectangular base and four triangles attached to the edges of the rectangle.
The rectangular base is one of the features of a rectangular pyramid, and it matches with the rectangle in the net. The other four triangles are attached to the edges of the rectangle, forming a pyramid-like structure.
Therefore,
The net with a rectangle and four triangles is the net for the rectangular pyramid.
The net with six rectangles is the net for the rectangular prism, and the net with a rectangle and four triangles is the net for the rectangular pyramid.
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using diagonals from a common vertex, how many triangles could be formed from a decagon?Answer:_______________
Using diagonals from a common vertex of a decagon (a polygon with ten sides), a total of seven triangles can be formed.
To see why, we can apply the formula for the number of triangles formed by drawing all the diagonals from a single vertex of a polygon, which is (number of sides - 2). For a decagon, the formula gives us:
number of triangles = (10 - 2) = 8
However, we need to subtract one from the total because the vertex where the diagonals are drawn from is not included in any of the triangles. Therefore, the number of triangles formed by drawing diagonals from a common vertex of a decagon is:
number of triangles = 8 - 1 = 7
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5. Triangle.
b = 18 in
h = 6 1/2 in
Answer:
58.5
Step-by-step explanation:
[tex]A=\frac{h_bb}{2}[/tex]
[tex]\frac{6.5*18}{2}[/tex]
[tex]58.5[/tex]
Normalmente, el concepto griego "logos" se entiende como la máxima expresión de la cultura racionalista occidental, fundada por las primeras escuelas de filosofía clásica. De hecho, el nombre de las disciplinas científicas provienen de él: biología, filología, psicología, tecnología, etc. No obstante, el concepto "logos" no tiene un significado tan abstracto, puesto que involucra tanto el pensamiento como la acción, tanto lo interno como lo externo, tanto la idea mental como el decir la palabra. Tema:_________________________________________________________ Idea Principal: ___________________________________________________
Concept: "Logos" has had a significant impact on Western thought. Importance: its recognition of the interplay between rational thought and empirical observation Acknowledgement: role of language and discourse in shaping our understanding of the world.
Topic: The concept of "Logos" in Greek philosophy and its significance in modern scientific fields.
The concept of "Logos" is central to Greek philosophy and has been interpreted in various ways throughout history. In its most basic sense, "Logos" refers to rational thought, speech, and language. It is often associated with the divine or the cosmic principle that governs the universe, as well as human reasoning and discourse.
The significance of "Logos" can be seen in its influence on modern scientific fields, including biology, psychology, and technology, among others. The term "biology," for example, comes from the Greek words "bios" (life) and "logos" (word or reason), reflecting the idea that the study of life requires both empirical observation and rational analysis.
Similarly, the field of psychology, which deals with the workings of the human mind and behavior, derives its name from the Greek word "psyche," meaning "soul," and "logos," meaning "reason." This reflects the idea that the study of the mind and behavior requires both empirical research and theoretical analysis.
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Translation: The Greek word "logos" is typically interpreted as the pinnacle of Western rationalist civilization, having been established by the first schools of classical philosophy. In reality, he is responsible for the names of many scientific fields, including biology, philology, psychology, technology, and others. Since it requires both mind and action, internal and external, the mental notion and pronouncing the word, the concept of "logos" does not have such an abstract meaning. Topic:____________________________________________________ Principal Concept:
2. For each pair of triangles, decide whether or not they are congruent. If they are congruent, compete the
congruency statement and the congruence property (SSS, etc.) that proves it. If it cannot be proved
congruent, state "not."
ΔFIT ≅ ΔRIS triangle are congruent.
How do triangles work?
The three vertices of a triangle make it a three-sided polygon. The angles of the triangle are formed by the three sides' end-to-end connections at a point.
The triangle's three angles add up to a total of 180 degrees. A triangle is a closed, two-dimensional geometry with three sides, three angles, and three vertices. Polygons include triangles as well.
In figure ,
FI = IS
RI = IT
∠FIT = ∠RIS
ΔFIT ≅ ΔRIS
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An experiment begins with 9 bacteria which grow at such a rate their population doubles every 15 minutes find the bacteria population 3 hours after the experiment begins
The bacteria pοpulatiοn after 3 hοurs is 36864.
Expοnential grοwth:
The cοncept used here is expοnential grοwth, which οccurs when the rate οf increase οf a quantity is prοpοrtiοnal tο its current value.
In this case, the bacteria pοpulatiοn dοubles every 15 minutes, which means that its rate οf increase is prοpοrtiοnal tο its current value.
This leads tο an expοnential grοwth curve, where the pοpulatiοn increases rapidly οver time.
Here we have
An experiment begins with 9 bacteria that grοw at such a rate their pοpulatiοn dοubles every 15 minutes.
Since there are 4 sets οf 15 minutes in an hοur,
The pοpulatiοn will dοuble 4 times in οne hοur.
Therefοre, the bacteria pοpulatiοn after οne hοur will be:
=> 9 × 2⁴ = 9 × 16 = 144
After twο hοurs, the pοpulatiοn will dοuble 4 times again: Hence, the pοpulatiοn after 2 hοurs
=> 144 × 2⁴ = 144 × 16 = 2,304
Similarly, After three hοurs,
2,304 × 2⁴ = 2,304 × 16 = 36864
Therefοre,
The bacteria pοpulatiοn after 3 hοurs is 36864.
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Solve for x. Type your answer as a number
Answer:
x = 5
Step-by-step explanation:
[tex]3x + 11 = 2(x + 8)[/tex]
[tex]3 x + 11 = 2x + 16[/tex]
[tex]x = 5[/tex]
Please need help with this
Two methods for proving that two triangles on a Cartesian coordinate plane are congruent are:
Side-Side-Side (SSS) congruence theorem; and Side-Angle-Side (SAS) congruence theorem.What is the explanation for the above?Two methods for proving that two triangles on a Cartesian coordinate plane are congruent are:
Side-Side-Side (SSS) congruence theorem: Two triangles are congruent if their corresponding sides are equal in length.
Side-Angle-Side (SAS) congruence theorem: Two triangles are congruent if two corresponding sides and the included angle are equal in both triangles.
To prove that two triangles on a Cartesian coordinate plane are congruent using coordinate geometry, we can follow these steps:
Identify the coordinates of the vertices of the two triangles.
Use the distance formula to find the lengths of the sides of each triangle.
Use the angle formula to find the measure of one angle in each triangle.
Check if the corresponding sides and angles of the two triangles are equal.
If the corresponding sides and angles are equal, the two triangles are congruent by SAS or SSS congruence theorem.
Here are the coordinates of the Triangles:
ΔABC = A(-3, 4) B (-4, 1) C (0,3)
ΔDEF = D(0, 2) E(3, 1) F(2, -2)
To prove whether the two triangles ΔABC and ΔDEF are congruent or not, we need to check if their corresponding sides and angles are equal.
Using the distance formula, we can find the lengths of the sides of each triangle:
AB = √[(4 - 1)² + (-4 - (-3))²] = 3.16
BC = √[(3 - 1)² + (0 - 4)²] = 4.47
AC = √[(3 - 4)² + (0 - (-3))²] = 3.16
DE = √[(2 - 1)² + (3 - 0)²] = 3.16
EF = √[(2-3)² + (-2- 1)²] = 3.16
DF = √[(0-2)² + (2 - - 2)²] = 4.47
Thus, on the basis of the side-side-side postulate, both triangles are congruent because the three sides have an equivalent on each triangle.
AB = DE
AC = EF
BC = DF
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What steps would you take to determine if these
figures are similar? Check all that apply.
Use a scale factor of 2.
Multiply the vertices of polygon ABCD by
Translate the intermediate image 4 units down.
Perform two different dilations.
Reflect the intermediate image.
The steps that you should take to determine if these figures are similar include the following:
2. Multiply the vertices of polygon ABCD by 1/20.
5. Reflect the intermediate image.
What are the properties of similar geometric shapes?In Mathematics and Geometry, two geometric shapes are said to be similar when the ratio of their corresponding side lengths are equal and their corresponding angles are congruent.
What is scale factor?In Mathematics and Geometry, the scale factor of a geometric figure can be calculated by dividing the length of the image by the length of the pre-image or by multiplying the vertices by a specific scale factor.
This ultimately implies that, we would multiply the vertices of polygon ABCD by 1/20 and then apply a reflection of the intermediate image;
Vertices A' = (1 × 1/20, -6 × 1/20) = (1/20, -6/20)
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Administering wages and salaries
The complete tables are mentioned below for Business Employees and For Killian employees.
Describe Amount?In mathematics, "amount" typically refers to the quantity or total of something. It is a general term that can be used to describe any kind of numerical value or magnitude, and can be expressed in various units, such as dollars, meters, liters, etc.
In many mathematical contexts, the term "amount" is used interchangeably with other related terms, such as "quantity," "total," "sum," or "value." For example, in algebra, the amount of a variable can refer to the numerical value or quantity that it represents. In geometry, the amount of a particular measurement, such as area or volume, is the total quantity of that measurement in a given shape or object.
The concept of amount is fundamental in many areas of mathematics, from basic arithmetic to more advanced calculus and statistics. It plays a central role in various mathematical operations and concepts, such as addition, subtraction, multiplication, division, and integration.
Employee C. North N. Vanders M. Clark
Position Systems Web Data
Analyst Designer Entry
Level 2 3 3
Salary $44,000 41,000 31,500
COLA 2.80% 3.20% 4.70%
Amount $1,232 $1,312 $1,483
Merit 3.60% 7.60% 4.50%
Amount $1,584 $3,116 $1,418
New $47,816 $45,428 $34,401
Salary
For Killian employees:
Employee Annual Merit COLA Total New
Salary Increase Increase Increase Salary
D. Garcia $18,000 6.00% 7.5% 12.50% $20,250
J. Stites 21,750 3.50% 6.5% 10.00% $24,090
J. Spar 31,860 5.10% 6.3% 11.40% $35,472
T. Beggins 14,615 0.70% 7.5% 8.20% $15,798
R. Stokes 27,916 6.250% 6.3% 12.525% $31,373
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Jack made 17 free throws and missed 8. What percent did he make?
For what values of x is the series n!x5n convergent? n=0 SOLUTION We use the Ratio Test. If we let an, as usual, denote the nth term of the series, then a, = n!x5n. If x # o, we have lim an + 1 an lim n00 n!x5n = lim n00 By the Ratio Test, the series diverges when x + 0. Thus the given series converges only when x =
The given series converges only when x = 0
To determine the values of x for which the series n!x⁵ⁿ converges, we can use the ratio test, which states that if the limit of the absolute value of the ratio of consecutive terms is less than 1, then the series converges, and if the limit is greater than 1, the series diverges.
Applying the ratio test to the series, we obtain |aₙ ₊ ₁ /aₙ| = |(n+1)! x⁵(n+1)/(n! x⁵)| = |(n+1)x⁵|. We simplify this expression to obtain |(n+1)x⁵|.
We then take the limit as n approaches infinity of |(n+1)x⁵|. If x is not equal to zero, this limit will approach infinity, since n+1 grows without bound as n approaches infinity, and x⁵ is a constant factor that does not affect the growth rate. In this case, the limit will be greater than 1, indicating that the series diverges.
However, if x is equal to zero, then the limit of |(n+1)x⁵| is zero, indicating that the series converges.
Therefore, the series n!x⁵n converges only when x is equal to zero.
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can someone please help
Answer:
Step-by-step explanation:
helpp asapp!!!!!!!!!!!
Answer:
18ft cubed
Step-by-step explanation:
To solve for the volume of a triangular prism
It's Base x Height x 0.5
V = bxhx0.5
V = 4x9x0.5
V = 36x0.5
V = 18ft cubed
11. Find x, y, and z.
5
y
6
3
Answer:
x = z = 3√5y = 4Step-by-step explanation:
You want the missing segment lengths in the kite shown, where half-diagonals are 3 and 6, and one side length is 5.
KiteThe diagonals of a kite cross at right angles, so each of the triangles shown is a right triangle. The figure has left-right symmetry about the vertical axis, so x=z.
Length yWe recognize the top triangles as being 3-4-5 right triangles, so the missing side length is y = 4.
Lengths x and zThese lengths are the hypotenuse of a right triangle with legs 3 and 6. The Pythagorean theorem tells us they are ...
x² = 3² +6²
x² = 9 +36 = 45
x = √(45) = √(9·5) = 3√5
The lengths x and z are ...
x = z = 3√5
__
Additional comment
In case you have never heard of a 3-4-5 right triangle, you can find y from the Pythagorean relation:
5² = 3² +y²
y² = 25 -9 = 16
y = √16 = 4
The {3, 4, 5} Pythagorean triple is one of several in common use in algebra, trig, and geometry problems. Others include {5, 12, 13}, {7, 24, 25}, {8, 15, 17}.
In an examination 45% students passed in science only, 25% passed in English only and 5% students failed in both subjects. If 200 students passed in English then find the total number of students by using a venn-diagram
Answer:
400 students altogether
Step-by-step explanation:
(100% -5%) - (45% + 25%) + 25% = 95% - 70% + 25% = 50%
200 ÷ 50% = 400