Step-by-step explanation:
Given that
Estimated uncolllectible account balance = $43,000
Balance of the allowance for doubtful accounts = $4,600
So the amount of bad debt expense is
Since it is not mentioned whether it is a credit or debit balance so we calculated by considering the both
If we considered the debit balance of allowance for doubtful debts so,
= $43,000 + $4,600
= $47,600
And, if credit balance, so
= $43,000 - $4,600
= $38,400
Linda Johnson, a broker, sold a home for $85,000. The home had been listed with another real estate firm for a 7% commission. The commission split between Johnson's principal broker and the other principal broker was 50/50. The commission split between Johnson and her principal broker was 65% to the broker, 35% to the principal broker. What was Johnson's commission from the sale of the home
Answer:
Linda's share was $ 1933.75
Step-by-step explanation:
We first need to calculate the comission that was paid to the other real state firm wich is 7% of the sales price, so we can use the following equation:
Comission = 85000 * (7/100) = 85000*0.07 = 5950 $
Since this comission was split in half between Johnson's broker and the other broker we have 5950/2 = 2975 for each of them. From that value 65% should stay with the broker wich is Linda in this case so:
Linda's share = 2975*(65/100) = 2975*(0.65) = 1933.75 $.
Given Information:
Sale Amount = $85,000
Commission rate = 7%
Linda Johnson commission rate = 65% of 50% of commission amount
Required Information:
Linda Johnson share in the sale = ?
Answer:
Linda Johnson share in the sale = $1933.75
Step-by-step explanation:
Linda Johnson share in the sale is
Linda's share = 65% of 50% of commission amount
Where commission amount is
commission amount = 7% of sale amount
commission amount = 0.07*85,000
commission amount = $5,950
Linda's share = 0.65*0.50*5,950
Linda's share = $1933.75
Need help
The equation yˆ=2.391x+57.420 models the taste rating of a cereal, y, in a survey, where x is the number of grams of sugar per serving.
What does the y-intercept of the equation represent in context of the situation?
A cereal with 0 grams of sugar has a rating of about 2.391.
The average number of grams of sugar is 2.
A cereal with 0 grams of sugar has a rating of about 57.
The average number of grams of sugar is 57.
Answer: A cereal with 0 grams of sugar has a rating of about 57
Step-by-step explanation:
The equation modelling the taste rating of a cereal, y, in a survey, where x is the number of grams of sugar per serving is expressed as
yˆ=2.391x + 57.420
This is a straight line graph represented in the slope intercept form which is expressed as
y = mx + c
Where
m represents the slope of the straight line
c represents the y intercept. The y intercept is the point at which x = 0.
From the given equation, the y intercept is 57.420
It means that a cereal with 0 grams of sugar has a rating of about 57
Sin * (x - y) , if sin x = 8/17 cos y = 12/37
Answer:
-429/629
Step-by-step explanation:
Use angle difference formula:
sin(x − y) = sin x cos y − sin y cos x
Assuming x and y are in the first quadrant:
sin(x − y) = sin x cos y − √(1 − cos²y)√(1 − sin²x)
Plugging in values:
sin(x − y) = (8/17) (12/37) − √(1 − (12/37)²)√(1 − (8/17)²)
sin(x − y) = (8/17) (12/37) − (35/37)(15/17)
sin(x − y) = -429/629
Tyler has a rectangular garden that measures 10 m wide by 13 m long. He wants to increase the area to 208 m² by increasing the width and length by the same amount. What will be the length (longer dimension) of the new garden? Enter your answer in the box.
Answer:
Step-by-step explanation:
Let x represent the constant amount by which the length and width of the garden is increased.
Tyler has a rectangular garden that measures 10 m wide by 13 m long. He wants to increase the area to 208 m² by increasing the width and length by the same amount. This means that the new length of the garden would be (13 + 2x) cm and the new width of the garden would be (10 + 2x) cm. Therefore,
(13 + 2x)(10 + 2x) = 208
130 + 26x + 20x + 4x² -208 = 0
4x² + 46x - 208 - 130 = 0
4x² + 46x - 78 = 0
Dividing through by 2, it becomes
2x² + 23x - 39 = 0
2x² + 26x - 3x - 39 = 0
2x(x + 13) - 3(x + 13) = 0
2x - 3 = 0 or x + 13 = 0
x = 3/2 or x = - 13
Since the value of x cannot be negative, then
x = 3/2 = 1.5 m
The length of the new garden is
13 + 1.5 = 14.5 m
Can you find x I don’t know how.
Answer:
7
Step-by-step explanation:
(x+3)/(x+8) = 2/3
3x + 9 = 2x + 16
x = 7
Jerry says I've got my money in a great account that compounds interest monthly. The equation y=388 (1.008) represents how much money I have at the end of the month. What is Jerry 's monthly interest rate? What is his annual interest rate? Write an equation to represent your total money if you invest $500 in an account with the same rate of return .Let m represent the number of months the money has been invested
Answer:
(a)His monthly Interest Rate=0.8%
(b)Annual Interest Rate = 9.6%
(c)[tex]500(1.008)^m[/tex]
Step-by-step explanation:
For a Principal P invested at a yearly rate r, compounded m times in t years
Amount at Compound Interest= [tex]P(1+\frac{r}{m})^{mt}[/tex]
Comparing with Jerry's equation y=388 (1.008)
(a)His monthly Interest Rate= 0.008=0.8%
(b)Annual Interest Rate= Monthly Interest Rate X 12 =0.8 X 12 = 9.6%
(c)If I invest $500 at the same rate of return,
Total Money after m months
= [tex]P(1+\frac{r}{m})^{mt}[/tex][tex]=500(1+0.008)^{m}[/tex][tex]=500(1.008)^m[/tex]
Final answer:
Jerry's monthly interest rate is 0.8%, and his annual interest rate is approximately 9.96%. An investment of $500 in the same account would grow according to the equation [tex]y = 500(1.008)^{m}[/tex], where m represents the months invested.
Explanation:
Jerry says he's got his money in a great account that compounds interest monthly. The equation [tex]y=388(1.008)^{m}[/tex] represents how much money he has at the end of the month. The monthly interest rate is found in the equation inside the parentheses, 1.008, which means the monthly interest rate is 0.8% (since 1.008 is equal to 1 plus 0.008 or 1 + 0.8/100). To find the annual interest rate, we need to use the compounding formula, which for monthly compounding can be simplified to [tex](1 + monthly interest rate)^{12} - 1[/tex]. so, [tex](1.008)^{12}- 1[/tex] gives an annual rate of approximately 9.96%.
To write an equation representing your total money if you invest $500 in an account with the same rate of return, we use the formula [tex]y = P(1 + r)^{m}[/tex], where P is the principal amount ($500), r is the monthly interest rate (0.008), and m represents the number of months the money has been invested. Therefore, the equation is [tex]y = 500(1.008)^{m}[/tex].
Suppose parametric equations for the line segment between (6,9) and (0,0) have the form: x = a+bt y = c+dt If the parametric curve starts at (6,9) when t=0 and ends at (0,0) at t=1, then find: a = b = c = d =
What is 0.05 Equal to 0.5.
Reduce each fraction to lowest terms by first factoring the numerator and denominator into product of prime factors and then dividing out any factors they have in common.
What is the distance between m, a negative number, and 0 on a number line?
Answer:
It depends on what negative number it is. For example -23 is 23 units or whatever to 0.
Step-by-step explanation:
What keeps stars such as the Sun from collapsing from their own self-gravity?
A the centrifugal force created by rapid rotation
B. the electrical repulsion of nuclei in the plasma
C. the gravitational pull created by orbiting planets
D. the outward pressure created by nuclear fusion
The outward pressure created by nuclear fusion within the core of stars, like the Sun, counteracts the force of gravity, preventing them from collapsing under their own self-gravity. This delicate balance sustains the stability and longevity of stars.
The correct answer is D. The outward pressure created by nuclear fusion.
Explanation: Stars, including the Sun, are massive celestial objects formed primarily of hydrogen and helium gas. In their cores, the extreme temperatures and pressures enable nuclear fusion reactions to occur, converting hydrogen into helium and releasing tremendous amounts of energy. This energy generates an outward pressure that counteracts the inward force of gravity, maintaining the star's equilibrium and preventing it from collapsing under its own self-gravity. This balance between gravitational forces pulling inward and outward pressure pushing outward due to nuclear fusion is what keeps stars, like the Sun, stable and prevents them from collapsing.
Your friend in your statistics class is upset about a recent increase in the price to wash and dry a load of laundry. She wants to conduct a one proportion z-test to see if more than half the residents in her dorm oppose the increase. She will poll a random sample of 30 residents. Which Normal model will she use?
Answer:
Mixed mode expression
Step-by-step explanation:
Mixed mode expression is an expression that contains or have operands that have different data types.
In this case, she has to generate values that have type equal to the operands in this situation.
Answer:
The answer to this question is N(0.50,0.091), just took a quiz with same question.
Step-by-step explanation:
Please help ASAP!
what is x=-b/2a?
This is the formula to solve for the vertex.
Example Question:
Find the vertex of y = -0.5x^2 + 100x
-b/2a = -100/2(-0.5) = -100/-1 = 100
The x coordinate of the vertex is 100.
Best of Luck!
P.S. this is 1000th question i've answered :)
A sports survey taken at THS shows that 48% of the respondents liked soccer, 66% liked basketball and 38% liked hockey. Also,30% liked soccer and basketball, 22% liked basketball and hockey, 28% liked soccer and hockey. finally, 12% liked all three sports. A. Draw a. venn diagram to represent the given information. B. What is the probability that a randomly selected student likes basketball or hockey? Solve this by also using an appropriate formula. C. What is the probability that a randomly selected student does not like any of these sports?
Answer:
a) The Venn diagram is presented in the attached image to this answer.
b) 0.82
c) 0.16
Step-by-step explanation:
a) The Venn diagram is presented in the attached image to this answer.
n(U) = 100%
n(S) = 48%
n(B) = 66%
n(H) = 38%
n(S n B) = 30%
n(B n H) = 22%
n(S n H) = 28%
n(S n B n H) = 12%
The specific breakdowns for each subgroup is calculated on the Venn diagram attached.
b) The probability that a randomly selected student likes basketball or hockey.
P(B U H)
From the Venn diagram,
n(B U H) = n(S' n B n H') + n(S' n B n H) + n(S n B n H') + n(S n B n H) + n(S n B' n H) + n(S' n B' n H) = 26 + 10 + 18 + 12 + 16 + 0 = 82%
P(B U H) = 82/100 = 0.82
c) The probability that a randomly selected student does not like any of these sports.
P(S' n B' n H')
n(S' n B' n H') = n(U) - [n(S' n B n H') + n(S' n B n H) + n(S n B n H') + n(S n B n H) + n(S n B' n H) + n(S' n B' n H) + n(S n B' n H')]
n(S' n B' n H') = 100 - (26 + 10 + 18 + 12 + 16 + 0 + 2) = 100 - 84 = 16%
P(S' n B' n H') = 16/100 = 0.16
There is 7/8 quarts of orange juice. Mrs. Mathewson would like to serve her guests 3/16 quarts orange juice. How many guests can she serve orange juice?
Mrs. Mathewson can serve orange juice to 4 guests. The solution was found by first converting the fractions to the same denominator, then dividing the total orange juice by the amount per guest, and taking into account that you can't serve fractions of a guest.
Explanation:The problem presented here is a basic division problem that requires you to divide the total amount of orange juice by the amount served to each guest. Mrs. Mathewson has 7/8 quarts of orange juice and she would like to serve each guest 3/16 quarts of orange juice.
Firstly, we'll convert both fractions to the same denominator for simplicity. As 8 is a multiple of 16, we can leave the second fraction as it is (3/16) and change the first fraction to 14/16 (which is the same as 7/8). Now, we divide 14 by 3 which gives us roughly 4.6.
This result means Mrs. Mathewson can serve orange juice to 4 guests with a bit left over. As we can't serve a fraction of a guest, it means she can only serve 4 whole guests.
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Mrs. Mathewson can serve orange juice to 14 guests.
Explanation:
To determine how many guests Mrs. Mathewson can serve orange juice, we need to find the quotient of the total amount of orange juice and the amount per guest. Given that there are 7/8 quarts of orange juice and Mrs. Mathewson wants to serve 3/16 quarts per guest, we divide the total amount by the amount per guest: (7/8) ÷ (3/16) = (7/8) × (16/3) = 14 guests.
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An open box will be made from a rectangular piece of cardboard that is 8 in. by 10 in. The box will be cut on the dashed red lines, removing the corners, and then folded up on the dotted lines. What is the MAXIMUM possible volume for the box?A) 1.5 in3B) 5.8 in3C) 52 in3D) 64 in3
Answer:
C) 52 in^3
Step-by-step explanation:
The first is to determine the formula of the volume of the box, which would be the following:
V = height * length * width
Knowing that we have a rectangular piece we will determine the maximum volume, we will double a distance x (which will be the height) in the width and length of the piece, therefore as it is on both sides, the length and width are defined from the Following way:
length = 10 - 2 * x
width = 8 - 2 * x
height = x
Now we calculate the volume:
V = x * (10-2 * x) * (8-2 * x)
To determine the maximum volume we will give values to x in order to see how it behaves:
Let x = 2.5
V = (5) * (3) * (2.5) = 37.5
Let x = 2
V = (6) * (4) * (2) = 48
Let x = 1.5
V = (7) * (5) * (1.5) = 52.5
Let x = 1
V = (8) * (6) * (1) = 48
Let x = 0.5
V = (9) * (7) * (0.5) = 31.5
It can be seen that the greatest volume is obtained when the height is equal to 1.5 and its volume is 52.5 in ^ 3
Compute the amount of interest earned in the following simple interest problem A deposit of $1,295 at 7% for 180 days
Answer: the amount of interest earned is $44.7
Step-by-step explanation:
The formula for determining simple interest is expressed as
I = PRT/100
Where
I represents interest paid on the amount deposited.
P represents the principal or amount deposited.
R represents interest rate
T represents the duration in years.
From the information given,
P = $1295
R = 7%
T = 180 day. Assuming there are 365 days in a year. Converting 180 days to years, it becomes
180/365 = 0.49315 year
Therefore,
I = (1295 × 7 × 0.49315)/100 = $840,
I = $44.7
Use the order of operations to evaluate the expression below.
20+7 • (5-3) = (8-6) - 4
Answer:
34 = -2
Step-by-step explanation:
20 = 7 x (5-3) = 34
(8-6) - 4 = -2
So the answer is 34 = -2
The equation 20+7 • (5-3) = (8-6) - 4, when evaluated using the order of operations, gives the result 34 = -2, which indicates that the original equation is not balanced.
Explanation:Let's evaluate the expression 20+7 • (5-3) = (8-6) - 4 using the order of operations, which can be remembered by the acronym PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).
First, we solve the expressions in parentheses: 7 • (5-3) = 7 • 2 = 14 and (8-6) - 4 = 2 - 4 = -2.
Then we perform the addition: 20 + 14 = 34. At this point, we have 34 = -2, which is not correct. Therefore, the original equation is not balanced.
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Scores on the Critical Reading part of the SAT exam in a recent year were roughly Normal with mean 496 and standard deviation 115. You choose an SRS of 100 students and average their SAT reading scores. If you do this many times, the mean of the average scores will be close to:_______. A. 115.
B. 115 / square root of 100 = 1.15.
C. 115 / square of 100 = 11.5.
Answer:
496
Step-by-step explanation:
I am assuming that there are options lacking. The average score, due to the Law Of Big Numbers, using a big enough sample will be close to the mean of the random variable. Thus the mean of the average scores will be close to 496 if the process is done many times.
The mean of the average scores will be close to the population mean of 496.
Explanation:The mean of the average scores will be close to the population mean, which is 496. The Central Limit Theorem states that as the sample size increases, the sample mean approaches the population mean. In this case, since we are choosing an SRS of 100 students, the mean of the average scores will be close to the population mean of 496.
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Mt. Vesuvius has an altitude of 3000 feet. A person stands 120 feet away from the base of the volcano. What is the angle of elevation from the person on the ground to the top of the volcano?
Answer: the angle of elevation from the person on the ground to the top of the volcano is 87.7°
Step-by-step explanation:
The person, his angle of elevation and his distance from the foot of the mountain forms a right angle triangle.
The altitude of the mountain represents the opposite side of the right angle triangle.
The distance of the person from the base of the volcano represents the opposite side of the right angle triangle.
To determine the angle of elevation from the person on the ground to the top of the volcano, we would apply the tangent trigonometric ratio.
Tan θ, = opposite side/adjacent side. Therefore,
Tan θ = 3000/120 = 25
θ = Tan^-1(25)
θ = 87.7° to the nearest tenth.
Find the missing length QG. Round answer to nearest tenth.
Answer:
The answer to your question is QG = 55.8 ft
Step-by-step explanation:
Data
QG = x
Process
1.- Find T
The sum of the internal angles in a triangle equals 180°
G + Q + T = 180
-Solve for T
T = 180 - G - Q
- Substitution
T = 180 - 41 - 67
-Simplification
T = 72°
2.- Use the law of sines to find QG
QG / sin T = GT / sin Q
-Solve for QG
QG = GT sinT / sin Q
-Substitution
QG = 54 sin 72 / sin 67
- Simplification
QG = 54 (0.951)/0.921
-Result
QG = 55.8 ft
Answer:
Step-by-step explanation:
Considering the given triangle QGT, to determine QG, we would apply the sine rule. It is expressed as
a/SinA = b/SinB = c/SinC
Where a, b and c are the length of each side of the triangle and angle A, Angle B and angle C are the corresponding angles of the triangle. Likening it to the given triangle, the expression becomes
QG/SinT = GT/SinQ = QT/SinG
The sum of the angles in a triangle is 180°. It means that
T = 180 - (41 + 67) = 72°
Therefore
QG/Sin72 = 54/Sin 67
Cross multiplying, it becomes
QGSin67 = 54Sin72
0.921QG = 54 × 0.951
0.921QG = 51.354
QG = 51.354/0.921
QG = 55.8 ft
A palindrome is a string whose reverse is identical to the original string. Give examples of bit strings of length 5 and 6 that are palindromes. How many bit string palindromes of length n are there? How many ternary string palindromes of length n are there?
Answer:
The answers to the question are as follows
a). Please see the examples of bit strings of length 5 and 6 that are palindromes in the following explanation.
b). The number of even length palindromes is [tex]26^{\frac{n}{2} }[/tex]
The number of odd length palindromes is [tex]26^{\frac{n+1}{2} }[/tex]
c). The number of ternary string palindromes of length n is 702.
Step-by-step explanation:
a). Examples of bit strings of length 5 and 6 that are palindromes are
Bit strings of length 5 Bit strings of length 6
Kayak Hannah
Level Redder
Civic Terret
Madam Kakkak
Solos degged
Tenet
Rotor
Minim
Radar
Refer
Terret
b). When n is even, we have a choice of any of the 26 characters for the first letter, similarly, we can choose any character for the second, and so on up till the n/2 th position after which subsequent letters depend on the letter chosen before the half point following the definition of a palindrome.
Therefore we have n/2 independent choices with repetition therefore we have [tex]26^{\frac{n}{2} }[/tex] palindromes of even length with or without meaning in the alphabet
On the other hand, when n is odd, we are free to chose any letter up to the middle letter as before this means we have [tex]\frac{n-1}{2} +1 = \frac{n+1}{2}[/tex] free choices
Therefore the number of odd length palindromes are [tex]26^{\frac{n+1}{2} }[/tex]
c). For a ternary string palindrome, we have 26 letters for the first position, and also 26 for the second, while the third is the same as the first which is one option.
Where n = 2 we have 26 ways of selecting the first and second letters which are equal
Therefore the number of ternary string palindromes of length n are 26×26 + 26 = 702
Bit string palindromes of length 5 and 6 are strings that are the same forward and backward, like '10101' or '100001'. The number of palindromic bit strings of length n is 2 raised to the floor of n/2, and the number of ternary string palindromes of length n is 3 raised to the floor of n/2.
Explanation:A palindrome is a string that remains the same when reversed. Examples of bit string palindromes of length 5 include '10001', '01110', '10101', '01010'. For length 6, examples could be '100001', '011110', '101101', '010010'.
In general, to calculate the number of palindromic bit strings for any given length, the first half of the string can be anything (2 ⌊n/2⌋ possibilities), and the second half must mirror the first. Thus there are 2 ⌊n/2⌋ bit string palindromes of length n.
For ternary palindromes (strings composed of the digits 0, 1, and 2), use the same logic but switch the base to 3. Thus there are 3 ⌊n/2⌋ ternary string palindromes of length n.
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One maid can clean the house in 2 hours. Another maid can do the job in 8 hours. How long will it take them to do the job working together?
A 16/6 hr
B 8/5 hr
C 1/10 hr
D 1/16 hr
Answer: B 8/5 hr
Step-by-step explanation:
One maid can clean the house in 2 hours. This means that the rate at which she cleans the house per hour is 1/2
Another maid can do the job in 8 hours. This means that the rate at which the other maid cleans the house per hour is 1/8
If they work together, they would work simultaneously and their individual rates are additive. This means that their combined working rate would be
1/2 + 1/8 = 5/8
Assuming it takes t hours for both of them to clean the room working together, the working rate per hour would be 1/t. Therefore,
5/8 = 1/t
t = 8/5 hour
Option B is correct. Working together, the two maids can clean the house in 8/5 hours.
Explanation:Let's assume that the combined rate of both maids working together is x house cleaned per hour. We can set up the equation:
1 maid's rate + another maid's rate = combined rate
1/2 + 1/8 = x
Solving for x:
4/8 + 1/8 = x
5/8 = x
The combined rate of the maids working together is 5/8 house cleaned per hour. To find how long it will take them to clean the house together, we can set up the equation:
(5/8) house per hour = 1 house
Let t be the time it takes them to clean the house together. We can write the equation:
(5/8) * t = 1
Solving for t:
t = 1 / (5/8)
t = 8/5 hours.
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The gas tank of Alberto's car holds a total of 42 liters of gas. At the beginning of the week, Alberto's car has 35.8 liters of gasoline in its tank. He uses 28.6 liters of gasoline during the week. Then he completely fills the tank with gas. How many liters of gas does Alberto buy?
Answer:
34.8 liters
Step-by-step explanation:
He has 35.8 liters.
He uses 28.6 liters.
Now that tanks has 35.8 liters - 28.6 liters = 7.2 liters
The capacity of the tank is 42 liters, and he has only 7.2 liters.
The fill up will be 42 liters - 7.2 liters = 34.8 liters
Answer: he bought 34.8 liters of gas.
Step-by-step explanation:
Let x represent the number of liters of gas that Alberto bought.
At the beginning of the week, Alberto's car has 35.8 liters of gasoline in its tank. He uses 28.6 liters of gasoline during the week. This means that the number of liters of gas left would be
35.8 - 28.6 = 7.2
Then he completely fills the tank with gas. If the gas tank of Alberto's car holds a total of 42 liters of gas., it means that
x + 7.2 = 42
x = 42 - 7.2
x = 34.8 liters
Maria received 55% of the vote in a student council election. What decimal and fraction, written in its simplest form, are equivalent to the percentage of the vote maria received
Answer:
The decimal and fraction equivalent to the percentage of the vote maria received is 0.55 and [tex]\frac{11}{20}[/tex] .
Step-by-step explanation:
Given:
Maria received 55% of the vote in a student council election.
Now, to find the decimal and fraction of the percentage of the vote maria received.
Percentage of vote Maria received = 55%.
So, the fraction and decimal of the percentage in its simplest form:
[tex]\frac{55}{100}[/tex]
On simplifying it:
[tex]=\frac{11}{20}[/tex].
Thus, the fraction is [tex]\frac{11}{20} .[/tex]
[tex]\frac{11}{20}[/tex]
[tex]=0.55.[/tex]
Hence in the decimal is [tex]0.55.[/tex]
Therefore, the decimal and fraction equivalent to the percentage of the vote maria received is 0.55 and [tex]\frac{11}{20}[/tex] .
The equation Upper A left parenthesis t right parenthesis equals 2000 e Superscript 0.055 t gives the balance after t years of an initial investment of 2000 dollars which pays 5.50% compounded continuously. a. Find a formula for StartFraction dA Over dt EndFraction b. Find and interpret Upper A prime left parenthesis 8 right parenthesis. Include appropriate units. c. Compare the approximation of $171 to the actual change. Report your answer to two decimal places.
Answer:
a) Rate of change of amount
[tex]A'(t) =110e^{0.055t}[/tex]
b) &170.79
c) 0.21
Step-by-step explanation:
We are given the following in the question:
The balance is given by the equation:
[tex]A(t) =- 2000e^{0.055t}[/tex]
where t is the time in years and the initial investment is $2000 when compounded continuously.
a) Rate of change of amount
[tex]\dfrac{d(A(t))}{dt} = \dfrac{d}{dt}(2000e^{0.055t})\\\\\dfrac{d(A(t))}{dt} = 2000e^{0.055t}\times 0.055\\\\\dfrac{d(A(t))}{dt} =110e^{0.055t}[/tex]
b) We have to find the value of A'(8)
[tex]A'(t) =110e^{0.055t}\\A'(8) = 110e^{0.055(8)} = 170.79[/tex]
Interpretation:
The future value of 9 year investment of $2000 will be $170.79 more than the future value of 8 year investment.
c) Comparison
Approximation = $171
Actual change = $170.79
Difference =
[tex]\text{Approximation - Actual change}\\=171 - 170.79\\=0.21[/tex]
Thus, the error is 0.21
The formula for dA/dt is 2000(0.055)e^(0.055t). A'(8) is found by substituting t=8 into dA/dt. To compare the approximation of $171 to the actual change, subtract the initial investment from the new balance after 8 years.
Explanation:a. To find the formula for dA/dt, we differentiate the equation A(t) = 2000e^(0.055t) with respect to t. Using the chain rule, we have dA/dt = 2000(0.055)e^(0.055t).
b. To find A'(8), we substitute t = 8 into the expression for dA/dt. Plugging in the values, we get A'(8) = 2000(0.055)e^(0.055(8)). This will give us the rate of change of the balance after 8 years.
c. To compare the approximation of $171 to the actual change, we subtract the initial investment of $2000 from the new balance after 8 years. The approximation is $171, so the actual change is A(8) - 2000. Plugging in the values, we get A(8) - 2000 = 2000e^(0.055(8)) - 2000.
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What is the value of p such that the line passing through (9,-1) and (6,p) has a slope of -1?
Answer:
p=2
Step-by-step explanation:
Use the slope formula
(p-(-1))/(6-9)=-1
(p+1)/-3=-1
p+1=3
p=2
Answer:
Step-by-step explanation:
Slope, m =change in value of y on the vertical axis / change in value of x on the horizontal axis represent
change in the value of y = y2 - y1
Change in value of x = x2 -x1
y2 = final value of y
y 1 = initial value of y
x2 = final value of x
x1 = initial value of x
The line passes through (9,-1) and (6,p) and the slope is 1
y2 = p
y1 = - 1
x2 = 6
x1 = 9
Therefore,
(p - - 1)/(6 - 9) = - 1
(p + 1)/- 3 = - 1
(p + 1) = - 1 × - 3
p + 1 = 3
p = 3 - 1
p = 2
In a recent study on world happiness, participants were asked to evaluate their current lives on a scale from 0 to 10, where 0 represents the worst possible life and 10 represents the best possible life. The responses were normally distributed, with a mean of 5.3 and a standard deviation of 2.5. Answer parts (a)dash(d) below. (a) Find the probability that a randomly selected study participant's response was less than 4. The probability that a randomly selected study participant's response was less than 4 is nothing. (Round to four decimal places as needed.)
Answer:
P ( X < 4 ) = 0.3015
Step-by-step explanation:
Given:
- The ratings for current lives on a scale 0 - 10 were normally distributed with parameters mean (u) and standard deviation (s).
u = 5.3
s = 2.5
Find:
Find the probability that a randomly selected study participant's response was less than 4.
Solution:
- Declare a random variable X that follows a normally distribution with parameters u and s, mean and standard deviation respectively.
X~N( 5.3 , 2.5 )
- To determine the probability of the rating to be less than 4 for a randomly selected study participant's response we have:
P ( X < 4 )
- Compute the Z-score value for the limit given:
P ( Z < (4 - 5.3) / 2.5 )
P ( Z < -0.52 )
- Use the Z-Table to calculate the above probability as follows:
P ( Z < -0.52 ) = 0.3015
- Hence, the required probability is equivalent to Z-score value probability:
P ( X < 4 ) = P ( Z < -0.52 ) = 0.3015
The probability that a randomly selected study participant's response was less than 4 is 0.3015.
To find the probability that a randomly selected study participant's response was less than 4, we can use the properties of the normal distribution. Given that the mean is 5.3 and the standard deviation is 2.5, we can standardize the value 4 using the z-score formula: z = (X - µ) / σ, where X is the value of interest, µ is the mean, and σ is the standard deviation. Once we find the z-score, we look up this value in the standard normal distribution table (Z-table) or use a calculator to find the probability.
Step-by-step calculation:Calculate the z-score for X = 4: z = (4 - 5.3) / 2.5 = -0.52.Look up the z-score in the Z-table or use a calculator to find the probability that Z < -0.52.For a z-score of -0.52, the probability is approximately 0.3015 (found from Z-table or through calculator).The probability that a randomly selected study participant's response was less than 4 is therefore 0.3015, or 30.15% when converted into percentage form.
The central limit theorem states that sampling distributions are always the same shape as the population distribution from whence the data came. True or False
Explanation:
The sample mean is not always equal to the population mean but if we take more and more number of samples from the population then the mean of the sample would become equal to the population mean.
The Central Limit Theorem states that we can have a normal distribution of sample means even if the original population doesn't follow normal distribution, But we have to take a lot of samples.
Suppose a population doesn't follow normal distribution and is very skewed then we can still have sampling distribution that is completely normal if we take a lot of samples.
Biking at 10 mph, it takes Kristen 1/2 hour to reach the train station to go to work. Kristen then takes the train to work, and it takes another 1/2 hour for her to get to work when the train travels 28 mph. How far does Kristen travel to work
Answer: 38 mph
Step-by-step explanation:
Add. 10 plis 28 is 38.
Answer: 19 miles
Step-by-step explanation:
Distance = speed × time
Biking at 10 mph, it takes Kristen 1/2 hour to reach the train station to go to work. This means that the distance covered on her way to the train station is
0.5 × 10 = 5 miles
Kristen then takes the train to work, and it takes another 1/2 hour for her to get to work when the train travels 28 mph. Distance covered by the train is
0.5 × 28 = 14 miles
Therefore, the distance that Kristen travels to work is
14 + 5 = 19 miles
Is my answer correct?
--> explain if it is wrong!!!
Answer: its 25 because you're adding the whole line from P to R, so 12.5 + 12.5 is 25
Step-by-step explanation:
P to T is 12.5
T to R is 12.5
Add those together
12.5 + 12.5 gives you 25
Answer:
25 in.
Step-by-step explanation:
In a rectangle the diagonals bisect each other.
Therefore PT = TR = ST = TQ = 12.5 in.
PR = PT + TR = 12.5 + 12.5
= 25 in.