The amount paid by the store is given as follows:
$111.54.
How to obtain the amount paid by the store?The amount paid by the store is obtained applying the proportions in the context of the problem.
The original price is symbolized as follows:
x.
The markup price was of 30%, hence the decimal multiplier is given as follows:
130% = 1.3.
The selling price is of $145, hence the original price is obtained as follows:
1.3x = 145
x = 145/1.3
x = $111.54.
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Using the same situation you described in #3, now interpret what the part-to-part ratio 2:1 means in the situation. Use complete sentences in your answer.
#3 situation
A classroom has 50 people.
The ratio of girls to boys is 2:3, so in other words, we need to find out how many boys and girls there are, and there are 2 girls for every three boys, So, how many boys and girls are there?
The answer would be :
2x+3x=50
5x=50
x=
x=10
2x= 2×10=20
3x =3*10=30
20 girls and 30 boys.
There are 30 boys and 20 girls in the classroom.
How to determine the number of boys and girls?Let the variable p represent the number of people. Next, we would translate the given word problem into an algebraic equation by using a ratio as follows;
Number of girls + Number of boys = Total number of people
2p + 3p = 50
5p = 50
Dividing both sides of the equation by 5, we have the following:
p = 50/5
p = 10 people.
For the number of girls, we have:
2g = 2(10)
2g = 20 girls.
For the number of boys, we have:
3g = 3(10)
3g = 30 boys.
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which fraction on the number line is equal to 3?
Answer: 12/4
Step-by-step explanation: 12/4 = 3/1 = 3
when publishing their results, the researcher feels that it would be unethical not to include the raw data which they have used to support their findings. so the researcher publishes the findings of the study, including all the supporting data on all the study participants, in a well known journal.
The most clearly violated principle of ethical research in this scenario is individual information should be kept private, only summary results should be made public.
Ethical research requires that the privacy and confidentiality of study participants be protected. This is because the information collected from participants is often sensitive and personal, and the participants may have trusted the researcher to keep their information private.
In this scenario, the researcher has published the raw data, including personal information such as each participant's name, residence, and medical history, which could potentially compromise the privacy of the participants.
This is a clear violation of the principle of confidentiality, as the participants may not have agreed to have their personal information made publicly available.
It is important for researchers to be transparent and honest in their reporting of results, but they also have a responsibility to protect the privacy of their participants.
The publication of raw data, including personal information, should only be done with the explicit consent of the participants or under special circumstances where it is necessary for scientific advancement or the public good.
In conclusion, while the researcher's intention of being transparent in their reporting of results is commendable, the publication of the raw data, including personal information, is a clear violation of the principle of ethical research and could have serious consequences for the privacy and confidentiality of the study participants.
Hence, the correct answer is D.
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--The given question is incomplete; the complete question is
"A researcher collects various pieces of information from volunteers for a study into the health effects of drinking and smoking. The information collected includes each volunteer's name, residence, age, height, weight, medical history and their history of smoking cigarettes and drinking alcohol. All participants agreed to provide their information after the researcher explained how it would be used.
When publishing their results, the researcher feels that it would be unethical not to include the raw data which they have used to support their findings. So the researcher publishes the findings of the study, including all the supporting data on all the study participants, in a well-known journal.
The principle of ethical research most clearly violated (if any) is:
A. the researcher has falsified results
B. the researcher has failed to report negative results
C. no ethical principles have been violated; there was no informed consent
D. individual information should be kept private, only summary results should be made public"--
The graphs of two equations in a linear system have the same x-intercept. One equation in the system is 1/5x + 4y = a . What is the solution of the system?
This means x = 5a pairs up with y = 0.
=========================================================
Explanation:
The two lines have the same x-intercept, which means they cross the x axis at the same location. This is the solution to the system since this point is on both lines simultaneously.
To find the x-intercept, plug in y = 0 and solve for x.
(1/5)x+4y = a
(1/5)x+4*0 = a
(1/5)x = a
x = 5a
We don't know the value of 'a', so we cannot determine the numeric value of x.
The x-intercept is located at (x,y) = (5a,0) and this is the solution to the system.
Evaluate the expression by finding the absolute value.
|10| – |‐5| + |‐3|
The absolute value of the given expression is 8.
What is absolute value?Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.
Given that an expression |10| - |‐5| + |‐3| we need to find its absolute value,
|10| - |‐5| + |‐3|
= 10 - 5 + 3
= 5 + 3
= 8
Hence, the absolute value of the given expression is 8.
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Sunny works at the library for three weeks longer than three over four of the school year a school year is 36 weeks long as son is college how many weeks in the school year did Sonny work at a library
Answer:
A school year is 36 weeks long, so 3/4 of the school year is 36 * (3/4) = 27 weeks.
If Sunny works at the library for three weeks longer than three over four of the school year, he works for 27 + 3 = 30 weeks.
So, Sunny works at the library for 30 weeks in the school year.
The number of weeks in the school year that Sonny worked at the library is; 30 weeks
How to solve Algebra Word problems?We are told that Sunny works at the library for three weeks longer than three over four of the school year a school year is 36 weeks long.
Now, since he works three weeks longer than three over four of the school year, then the expression is;
³/₄(36) + 3
= 27 + 3
= 30 weeks
That figure represents the number of weeks in the school year that Sonny worked at the library.
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Use synthetic division to show that x=-3 is a root of the polynomial function f(x)=x^3-4x+15
Answer:
Step-by-step explanation:
ans = x^2 - 3x + 5
A jar contains nickels, dimes and quarters in a ratio of 2:3:5 respectively. If there are 85 quarters, how many more dimes and there in a jar than nickels?
The number of dimes more than nickels in the jar is 17.
How many more dimes are there ?The first step is to determine the total number of coins in the jar.
Total number of coins in the jar = (sum of ratios x number of quarters) / ratio that represents the number of quarters
Sum of ratios = 2 + 3 + 5 = 10
Total number of coins in the jar = (10 x 85) / 5 = 170
Number of dimes in excess of nickels = [(ratio representing dimes - ratio representing quarters) / sum of ratios) x total number coins
[(3 - 2) / 10] x 170
(1/10) x 170 = 17
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Consider the two triangles shown below. Which of the triangle congruence theorems could be used to prove the triangles are congruent?
The triangles are congruent by ASA theorem.
How to find congruent triangle?Two triangles are said to be congruent if pairs of their corresponding sides and their corresponding angles are equal. In other words, congruent triangles are triangles that have the same size and shape.
Therefore, If two angles and the included side of one triangle are equal to the corresponding angles and side of another triangle, the triangles are congruent by ASA(angle side angle).
Therefore, the triangle are congruent by ASA(angle side angle)
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What is angle q in the triangle that is shown below? Side x =
66.1 cm, side y = 22.8 cm, and angle f = 23.3º.
Please round your answer to one decimal place.
In the triangle, we will use the Law of Cosines to find the value of angle q. angle q in the triangle is approximately 61.2° (rounded to one decimal place).
What is Law of Cosines?The Law of Cosines is a mathematical formula used in trigonometry to find the length of a side or an angle in a triangle.
The formula can be used to find the length of a side or an angle in a triangle, given the length of the other sides and angles.
The Law of Cosines is particularly useful when only two sides and the angle between them are known, or when only two angles and the side between them are known.
To use the Law of Cosines, you need to identify the sides and angles that you know and plug them into the formula. Then, you can use algebra to solve for the unknown side or angle.
The Law of Cosines is related to the Pythagorean Theorem, which states that in a right triangle, the sum of the squares of the lengths of the two shorter sides is equal to the square of the length of the longest side.
The Law of Cosines can also be used in three-dimensional geometry to find the distance between two points in space.
The Law of Cosines is a useful tool in many fields, including engineering, physics, and computer graphics, and is widely used in solving geometric problems.
In this triangle, we have x = 66.1 cm, y = 22.8 cm, and angle f = 23.3º. We want to find angle q, which is opposite side x.
We can use the Law of Cosines to find the value of cos(q), and then use the inverse cosine function to find the value of q in degrees.
cos(q) = (x² + y² - x²)/(2xy)
cos(q) = (66.1² + 22.8² - 22.8²)/(2 * 66.1 * 22.8)
cos(q) = 67.8664/150.6448
cos(q) = 0.449
q = cos⁻¹(0.449)
q = 61.2°
Therefore, angle q in the triangle is approximately 61.2° (rounded to one decimal place).
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Exercise 1: ABC is a triangle such that AB=5cm. A=50°and AC=5cm 1) Construct the triangle ABC. 2) What is the nature of the triangle ABC? Justity. 3) Calculate ABC and ACB. 4) Draw the height [AH) issued from A to [BC]. 5) a. Calculate BAH and CAH. b. What does [AH] represents for BAC? Justify.
Answer:
2) Acute triangle, isosceles
3) Both are 65 degrees
4) (diagram)
5) a) both 25 degrees
b) midpoint
Step-by-step explanation:
2) If you're struggling search up "draw a triangle" and you'll find a website that will draw it for you. It will help you get an idea of it looks like and its nature.
3) We know that sides AB and AC are 5cm. So this triangle is an isosceles which makes the 2 remaining angles equal (if you draw a diagram it will be clear)
So:
180-50/2 = 65
ABC and ACB = 65 degrees each
4) Construct the line AH down the middle like in the diagram I drew.
5) a) Since AH is a straight line, we know that the angle AHB will be 90 degrees. After question 3 we also know that angle ABH is 65 degrees.
BAH = 180-90-65
BAH = 25 degrees
CAH = 50 - 25
CAH = 25 degrees
b) AH is the midpoint for BAC because the 2 segments formed are both 25 degrees.
During the month of September the animal shelter saved 80 animals. In the month of October, the animal shelter saw an increase of 15% of animals being saved from the previous month. How many animals were saved in the month of October?
Answer: In the month of October, the animal shelter saved 92 animals.
Step-by-step explanation: In the month of October, the animal shelter saw an increase of 15% of animals being saved from the previous month. To calculate this increase, we can use the formula:
increase = (original number) x (percent increase)
In this case, the original number is 80 (the number of animals saved in September) and the percent increase is 15%. So:
increase = 80 x 0.15 = 12
This means that in October, the animal shelter saved an additional 12 animals beyond the 80 animals that were saved in September. To find the total number of animals saved in October, we add this increase to the original number:
animals saved in October = 80 + 12 = 92
So, in the month of October, the animal shelter saved 92 animals.
Explain why [tex]\sqrt{7^3}[/tex] must be equal to [tex]7^\frac{3}{2}[/tex] if the Power of a Power Property is true for all rational exponents.
(√7)^3 is equal to 7^(3/2)
The Power of a Power Property
The Power of a Power Property states that when you have a base raised to an exponent, and that base is also raised to an exponent, you can simplify the expression by multiplying the exponents.
For example, (a^x)^y = a^(xy)
In the case of square root of 7^3, the expression (√7)^3 can be written in the form of base and exponent, where the base is √7 and the exponent is 3.
Now, we can use the Power of a Power Property to simplify the expression, by multiplying the exponents.
So, (√7)^3 = (7^(1/2))^3 = 7^(1/2 * 3) = 7^(3/2)
This means that the square root of 7^3 is equal to 7^(3/2) because the Power of a Power Property allows us to simplify the expression by multiplying the exponents.
It's worth noting that the square root of 7^3 is the same as taking the cube root of 7^3, which is 7^(3/3) = 7^1 = 7.
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Would you rather…
Five Seconds of Summer’s tutoring service charges a base charge of $5 and $5 per hour.
Fall Out Boy’s tutoring service charges a base fee of $9 and $3 per hour. Whose service
would you rather use?
Can you graph it and explain it on a table and the substitution method
Answer: Fall Out Boy's service is cheaper than Five Seconds of Summer's service.
Step-by-step explanation: The cost of Five Seconds of Summer's tutoring service can be represented by the equation:
C = 5 + 5h
where C is the total cost and h is the number of hours.
The cost of Fall Out Boy's tutoring service can be represented by the equation:
C = 9 + 3h
To compare the cost of the two services, we can use the substitution method. We can set the number of hours (h) equal to a variable and substitute that variable into the equation for both services.
For example, if we set h = 4 (4 hours of tutoring), we get:
C(Five Seconds of Summer) = 5 + 5(4) = 25
C(Fall Out Boy) = 9 + 3(4) = 21
The cost of Fall Out Boy's service is $21 and the cost of Five Seconds of Summer's service is $25. Therefore, Fall Out Boy's service is cheaper for 4 hours of tutoring.
We can also graph the cost of the two services on a coordinate plane. The x-axis represents the number of hours and the y-axis represents the cost. The equation for Five Seconds of Summer's service would be y = 5 + 5x and the equation for Fall Out Boy's service would be y = 9 + 3x
Service | Equation
Five Seconds of Summer y = 5 + 5x
Fall Out Boy | y = 9 + 3x
please help asap its due today
Answer:
c < 10 = The bag contains fewer than 10 carrots.
c > 10 = Catherine biked farther than 10 miles.
c < 20 = The chair is shorter than 20 inches
c > 20 = Carlos scored over 20 points
Given right triangle ABC, where side "c" is the hypotenuse, angle A measures 50 degrees, and side b measures 13 m, find the length of side c.
Answer:
In a right triangle, the angle opposite the hypotenuse (side c) is always 90 degrees, so we can use the trigonometric function sine to find the length of side c.
sin(A) = opposite / hypotenuse
sin(50) = b / c
so c = b / sin(50)
c = 13 m / sin(50)
c ≈ 22.361 m
So the length of side c is approximately 22.361 meters
TEXT ANSWER
A dog weighs 45 pounds 12 ounces. How much does the dog weigh in kilograms?
If needed, round your answer to the nearest hundredth.
Conversion ratios:
1 lb = 16 oz
.
•
.
• 1 kg = 2.2 lb
Use the equation editor to show your work.
Answer:
20.80 kg
Step-by-step explanation:
45 lb + 12 oz = 45 lb + 12/16 lb = 45.75 lb
45.75 lb × (1 kg)/(2.2 lb) = 20.80 kg
Question Help
Mr. Kent has 264 books on 4 shelves in his house. He has the same number of books on each shelf. To find the number of
books on each shelf, he divided 264 by 4. How many tens did he regroup as ones? How many books are on each shelf?
Mr. Kent regrouped
(Type whole numbers.)
tens as
ones.
CTTS
The number of tens that he regrouped as ones is equal to 2 tens.
The number of books that are on each shelf is equal to 66 books.
What is a quotient?In Mathematics, a quotient simply refers to a mathematical expression that is typically used for the representation of the division of a number by another number.
Based on the information provided above, the number of books on each shelf is given by this quotient:
Quotient = 264/4
Quotient = 66
For the number of tens that Mr. Kent regrouped as ones on the shelf, we have the following:
26/4 = 24/4 + 2 = 2 tens.
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Calculate the following, then convert your result to degrees, then give the quadrant of the terminal side.
The angles converted to degrees are: 615°, 165°, 112.5° with their respective quadrants of their terminal side as: 3rd, 2nd, and 2nd.
How to convert the angles from radian to degreeWe simplify each angles of the angle in the radian to a single fraction and then convert them to degree by multiplying by 180°/π as follows:
11π/4 + 2π/3 = (33π + 8π)/12 {12 is the LCM of the denominators}
11π/4 + 2π/3 = 41π/12
11π/4 + 2π/3 = 41π/12 × 180°/π
11π/4 + 2π/3 = 615°
The terminal side of 615° is in the 3rd quadrant
π/6 - 5π/4 = (2π - 15π)/12 {12 is the LCM of the denominators}
π/6 - 5π/4 = -13π/12
π/6 - 5π/4 = -13π/12 × 180°/π
π/6 - 5π/4 = -195°
π/6 - 5π/4 = 165° {changing -195° to positive angle by adding 360°}
The terminal side of 165° is in the 2nd quadrant.
9π/8 - π/2 = (9π - 4π)/8 {8 is the LCM of the denominators}
9π/8 - π/2 = 5π/8
9π/8 - π/2 = 5π/8 × 180°/π
9π/8 - π/2 = 225°/2
9π/8 - π/2 = 112.5°
The terminal side of 112.5° is in the 2nd quadrant.
Therefore, the angles converted to degrees are: 615°, 165°, 112.5° with their respective quadrants of their terminal side as: 3rd, 2nd, and 2nd.
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In which quadrants do solutions for the inequality y is greater than one fifth times x plus 3 exist?
The solutions for the inequality "y is greater than one fifth times x plus 3" lies in both quadrant I and quadrant II.
What is a quadrant?In Mathematics, a quadrant can be defined as the area that is occupied by the values on the x-coordinate and y-coordinate of a cartesian coordinate.
Generally speaking, there are four (4) major quadrants in any graph and these include the following:
Quadrant IQuadrant IIQuadrant IIIQuadrant IVy is greater than one fifth times x plus 3 ⇒ y > x/5 + 3.
Next, we would use an online graphing calculator to plot the given inequality. Therefore, the required solution is the shaded area above the dash line as shown in the graph attached below.
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PLS HELP answer these 5 questions! I need explanations and work! If you help me, you will get 50 points!! PLS HELP ASAP due TMR!!!
18) The expression with greater value are a and b. = 256 (19) the density of the object is X⁶ (20) The mass of the object is Y¹⁴ (21) The simplified expression is (3x)² (22) Tobe uses the multiplication law for the exponent
How to solve the problems?
The given parameters are
18) (a) 2³ · 2⁵ Using the multiplication law of indices, the two numbers are in the same base therefore add their powers
This implies 2³⁺⁵ = 2⁸ = 256
(b) (4)⁷/(4)³
Using the multiplication law of indices, the two numbers are in the same base therefore add their powers
4⁷⁻³ = 4⁴ = 256
(19) Mass = X¹⁵ grams
Volume = X³ cm₁
Density = Mass/Volume
= X¹⁵/X³³
X¹⁵⁻³ = X⁶
Density = X⁶
(20) Density = Y¹⁰ grams/cm³
Volume = Y⁴ cm³
Mass = Density*volume
Mass = Y¹⁰ · Y⁴
= Using the multiplication law of indices, the two numbers are in the same base therefore add their powers
Y¹⁰⁺⁴
= Y¹⁴
(21) [ (3x)¹/³ · (3x)²/³)] / (3x)²/³
Using both multiplication and division laws of indices
(3x)²⁻¹
This is equal to (3x)¹
(22) 8⁷· 8³ · 8²
Using the multiplication law of indices, the two numbers are in the same base therefore add their powers
8⁷⁺³⁺² = 8¹²
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How to solve
Er∆\54+7(54*6/7/∆)
Answer:
e
Step-by-step explanation:
e
What is the end behavior for f(x)=x^5
The end behavior for f(x)=x^5 is as x approaches infinity, f(x) approaches infinity and as x approaches negative infinity, f(x) approaches negative infinity
How to determine the end behaviorFrom the question, we have the following parameters that can be used in our computation:
f(x) = x^5
Calculate f(oo) and f(-oo) i.e the function at infinity and negative infiniyt
So , we have
f(x) = (oo)^5 = +oo
f(x) = (-oo)^5 = -oo
This means that x increases with f(x)
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Geometry I don’t understand
The value of x is -20 and can be calculated using basic proportionality theorem.
What is Basic Proportionality Theorem?The Basic Proportionality Theorem, often known as the Thales Theorem, was developed by the well-known Greek mathematician Thales.
Basic Proportionality Theorem asserted that the ratio of any two related sides is always the same for any two equiangular triangles.
Thales provided the basic proportionality theorem based on this idea (BPT). Similar triangles have introduced this idea before. If two triangles resemble one another, then
The corresponding angles of both triangles are equal.
The corresponding sides of both triangles are proportional to one another.
Since the ratio of other side pair is 1:1, similarly 4x+20 = 3x
20 = 3x-4x
20 = -x
x = -20
Therefore, the value of x is -20
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Aaliyah and Yohance are having a competition to see who can read
more pages over the coming weekend. Aaliyah has bet Ms. Solomon that
she'll read 50 more pages than Yohance. Both scholars read at an
average rate of 40 pages per hour. Yohance says that he's going to read
for 7.5 hours this weekend. How many hours will Aaliyah need to read in
order to fulfill her promise of reading 50 more pages than Yohance?
50= 40
Mathematically, Aaliyah needs to read 8.75 hours (or 8 hours, 45 minutes) to fulfill her promise of reading 50 more pages than Yohance.
What are the mathematical operations?The mathematical operations used to determine the hours that Aaliyah needs to read this weekend to meet her target include multiplication, addition, and division.
In the first instance, we must determine the total pages read by Yohance this weekend using multiplication as follows: 300 (7.5 x 40).
Secondly, the additional pages Aaliyah will read are added to Yohance's to show the total pages read by Aaliyah.
Lastly, the total pages are divided by Aaliyah's reading speed or rate to determine the hours she requires.
Aaliyah Yohance
Average pages per hour 40 40
Additional page 50
Yohance weekend reading time = 7.5 hours
Total pages read by Yohance this weekend = 300 (7.5 x 40)
The total pages to be read by Aaliyah this weekend = 350 (300 + 50)
Aaliyah's total weekend reading time 8.75 hours (350/40)
Thus, for Aaliyah to read 50 more pages than Yohance, she needs 8.75 hours to fulfill her promise.
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specify the number of significant figures in each of the following numbers and determine the result of the following calculation to the correct number of significant figures. 3.115 0.2281 712.5 45
The result of the calculation is 680.
The number 3.115 has four significant figures, the number 0.2281 has four significant figures, the number 712.5 has three significant figures and the number 45 has two significant figures. This means that when performing calculations with these numbers, the answer must be rounded to the least number of significant figures, which is two.
The calculation is 3.115 + 0.2281 + 712.5 - 45. Using the rules of significant figures, we can calculate this as 3.1 + 0.2 + 713 - 45.
The result of the calculation is 675.3 and this must be rounded to the least number of significant figures, which is two. Therefore, the result of the calculation is 680.
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Please help as soon as possible.
The translation of point A to point B is done by translation vector (- 3, - 6).
How to determine the translation vector
In this problem we find the a point that is part of a rectangle and that must be translated by means of a rigid transformation formula, that is, a translation formula that does not alter the features of the rectangle. We need to determine the translation vector by means of the following formula:
T(x, y) = B(x, y) - A(x, y)
Where:
A(x, y) - Initial pointB(x, y) - Final pointT(x, y) - Translation vectorIf we know that A(x, y) = (6, 9) and B(x, y) = (3, 3), then the translation vector is:
T(x, y) = (3, 3) - (6, 9)
T(x, y) = (- 3, - 6)
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tanya incorrectly says that the solution of the systems of equations is (-3, -2). what is the correct solution? 6g-3h=-3 7=h-5g
The correct solution to the system of equation is (-2, -3)
How to determine the correct solutionFrom the question, we have the following parameters that can be used in our computation:
6g-3h=-3
7=h-5g
Divide through 6g-3h=-3 by 3
so, we have
2g-h=-1
Make h the subject
h = 2g + 1
So, we have
7 = 2g + 1 - 5g
Evaluate the equation
-3g = 6
So, we have
g = -2
This becomes
h = 2 * -2 + 1
Evaluate
h = -3
Hence, the solution is (-2, -3)
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use ratio test to determine if the series converges
The series for this problem is absolutely convergent, as the limit assumes a value lower than 1.
What is the ratio test?The infinite series for this problem is defined as follows:
[tex]\sum_{i = 1}^{\infty} \frac{1}{n!}[/tex]
Hence the general term is given as follows:
[tex]a_n = \frac{1}{n!}[/tex]
The limit is given as follows:
[tex]L = \lim_{n \rightarrow \infty} \left|\frac{a_{n + 1}}{a_n}\right|[/tex]
The (n + 1)th term is given as follows:
[tex]a_{n + 1} = \frac{1}{(n + 1)!}[/tex]
The factorial can be simplified as follows:
(n + 1)! = (n + 1) x n!.
Hence the limit will be calculated of:
1/[(n + 1) x n!] x n! = 1/(n + 1).
The result of the limit is given as follows:
[tex]L = \lim_{n \rightarrow \infty} \frac{1}{n + 1} = 0[/tex]
As the limit assumes a value of zero, the series is absolutely convergent.
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6. A parabola has focus (-1, 6) and directrix y = 4. Determine whether each point on
the list is on this parabola. Explain your reasoning.
a. (-1,5)
b. (1,7)
c. (3,9)
Answer:a
Step-by-step explanation: