The net financing need considering the three accounts is approximately $185,753.42.
To determine the average investment in accounts receivable, inventories, and accounts payable, we need to calculate the Inventory Period, Receivables Period, and Payment Period.
Inventory Period:
The Inventory Period is the average number of days it takes for finished goods to be sold. In this case, the average production process time is given as 40 days, and finished goods are kept on hand for an average of 15 days before they are sold. Therefore, the Inventory Period is the sum of these two periods:
Inventory Period = Production Process Time + Days Kept on Hand
Inventory Period = 40 days + 15 days
Inventory Period = 55 days
Receivables Period:
The Receivables Period is the average number of days it takes for accounts receivable to be collected. It is given that accounts receivable are outstanding for an average of 40 days. Therefore, the Receivables Period is 40 days.
Payment Period:
The Payment Period is the number of days the firm receives credit on its purchases from suppliers. It is given that the firm receives 40 days of credit. Therefore, the Payment Period is 40 days.
Now, we can calculate the average investment in accounts receivable, inventories, and accounts payable.
Average Investment in Accounts Receivable:
Average Investment in Accounts Receivable = (Net Sales / 365) * Receivables Period
Average Investment in Accounts Receivable = ($1,200,000 / 365) * 40
Average Investment in Accounts Receivable ≈ $131,506.85
Average Investment in Inventories:
Average Investment in Inventories = (Cost of Goods Sold / 365) * Inventory Period
Average Investment in Inventories = ($900,000 / 365) * 55
Average Investment in Inventories ≈ $142,191.78
Average Investment in Accounts Payable:
Average Investment in Accounts Payable = (Cost of Goods Sold / 365) * Payment Period
Average Investment in Accounts Payable = ($900,000 / 365) * 40
Average Investment in Accounts Payable ≈ $87,945.21
Finally, to calculate the net financing need, we subtract the average investment in accounts payable from the sum of the average investment in accounts receivable and inventories:
Net Financing Need = Average Investment in Accounts Receivable + Average Investment in Inventories - Average Investment in Accounts Payable
Net Financing Need = $131,506.85 + $142,191.78 - $87,945.21
Net Financing Need ≈ $185,753.42
Therefore, the net financing need considering the three accounts is approximately $185,753.42.
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A yogurt company claims that it prints a free yogurt coupon under a randomly selected 20% of its lids. A loyal customer purchases 85 yogurt cups, and records whether each was a winner. After consuming all 85 cups, he is disappointed to see that only 12 (14.1%) of his yogurt cups contained coupon codes. He performs a 99% confidence interval for the proportion of yogurt cups containing coupon codes, obtaining (0.044, 0.238). What conclusion can the customer draw about the yogurt company’s claim?
Answer:
The customer can conclude that the company's claim is correct
Step-by-step explanation:
The percentage of lids that has a free yogurt coupon = 20%
The number of cups a loyal customer purchases = 85 yogurt cups
The number of cups that contained a coupon = 12 (14.1%)
The confidence interval performed = 99% confidence interval for the proportion of yogurt cups containing coupon codes
The interval obtained = (0.044, 0.238)
Therefore, the range of proportion within which the true proportion exists is 0.044 < [tex]\hat p[/tex] < 0.238
The range of percentage within which the true percentage exist is therefore;
0.044 × 100 = 4.4% < [tex]\hat p[/tex] × 100 < 0.238 × 100 = 23.8%
Given that the possible true percentage of lids that has a coupon is between 4.4% and 23.8% at 99% confidence level, the customer can conclude that only 12 of his yogurt cup contained coupon by chance and that the company's claim is correct.
Answer:
A, the company’s claim may be justified because 0.2 is in the confidence interval.
Step-by-step explanation:
Dose anyone know this question I will give brainless bc I dont know this
Answer:
3.5
Step-by-step explanation:
Answer:
LxWxH
Step-by-step explanation:
thats how you find area
Please can someone help me?
Answer:
weight of a water=0.5
spherical ball is filled With water=0.95.
so dear for
22\7*0.5*0.95=1.49
The distance from the
coffee shop to the
school is 10 miles. On
the map, the coffee
shop is 7.5 inches from
the school. Which one
of the following gives
the scale used
on the map?
A. 5 inches = 2 miles
B. 4 inches = 3 miles
C. 2 inches = 5 miles
D. 3 inches = 4 miles
what does a research means to be amenable to scientific study
Being amenable to scientific study means that a research topic can be investigated using scientific methods and principles.
When a research topic is described as being amenable to scientific study, it means that it can be effectively examined and analyzed using scientific methods and principles. This implies that the research question or phenomenon can be studied through systematic observation, data collection, experimentation, and analysis within the framework of scientific inquiry.
To be amenable to scientific study, a research topic should be measurable, testable, and capable of producing empirical evidence. It should lend itself to rigorous investigation, allowing for the formulation of hypotheses, the collection of data, and the application of statistical analysis or other scientific methodologies.
Furthermore, the topic should be well-defined and specific enough to be studied systematically, allowing for replication and peer review, which are essential aspects of scientific research.
Overall, being amenable to scientific study means that the research topic can be examined and understood using the established principles and methods of scientific inquiry.
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Use De Moivre's Formula to compute the three complex cubic roots of 2-2i List your answers in the form (a + bi). Show all steps.
Using c we can compute the three complex cubic roots of 2-2i. The roots are (-1 + i), (1 - i), and (-2). The explanation below provides the step-by-step process of finding these roots.
De Moivre's Formula states that for any complex number z = r(cos θ + i sin θ), the nth root of z can be calculated as z^(1/n) = r^(1/n)(cos(θ/n + 2πk/n) + i sin(θ/n + 2πk/n)), where k is an integer.
In this case, we have z = 2-2i, which can be represented in polar form as r = √(2^2 + (-2)^2) = 2√2 and θ = tan^(-1)(-2/2) = -π/4.
To find the cubic roots, we need to compute z^(1/3) = (2√2)^(1/3)[cos((-π/4)/3 + 2πk/3) + i sin((-π/4)/3 + 2πk/3)].
For k = 0:
z^(1/3) = (2√2)^(1/3)[cos((-π/4)/3) + i sin((-π/4)/3)] = (∛2)[cos(-π/12) + i sin(-π/12)] = (-1 + i).
For k = 1:
z^(1/3) = (2√2)^(1/3)[cos((-π/4)/3 + 2π/3) + i sin((-π/4)/3 + 2π/3)] = (∛2)[cos(7π/12) + i sin(7π/12)] = (1 - i).
For k = 2:
z^(1/3) = (2√2)^(1/3)[cos((-π/4)/3 + 4π/3) + i sin((-π/4)/3 + 4π/3)] = (∛2)[cos(-5π/12) + i sin(-5π/12)] = (-2).
Therefore, the three complex cubic roots of 2-2i are (-1 + i), (1 - i), and (-2)
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Let S be any sample space, and E, F and G be any three events. Describe the event that E and F occur, and G does not occur.
a) ( E ∪ Fc ) ∩ G
b) ( E ∪ F ) ∩ G
c) ( E ∪ F ) ∩ Gc
d) ( E ∩ F ) ∪ Gc
e) E ∩ F ∩ Gc
f) None of the above.
The event that E and F occur, and G does not occur is E ∩ F ∩ Gc. So, correct option is E.
The event that E and F occur, and G does not occur can be represented by the expression (E ∩ F) ∩ Gc. Let's break down the options provided to determine the correct representation:
a) (E ∪ Fc) ∩ G: This represents the event where either E or the complement of F occurs, and G occurs. It does not capture the condition that both E and F occur.
b) (E ∪ F) ∩ G: This represents the event where either E or F occurs, and G occurs. It does not exclude the possibility of E and F occurring together.
c) (E ∪ F) ∩ Gc: This represents the event where either E or F occurs, and G does not occur. However, it does not specify that E and F occur together.
d) (E ∩ F) ∪ Gc: This represents the event where either E and F occur together or G does not occur. It does not exclude the possibility of E and F occurring without G.
e) E ∩ F ∩ Gc: This correctly represents the event where both E and F occur together, and G does not occur. This is the desired outcome as stated in the question.
Therefore, the correct representation for the event is option e) E ∩ F ∩ Gc.
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#8 Tessa has a plan for a set of stairs made of concrete, as shown. Each stair is 1 point the same width and height and is taller than the previous one by the same amount. What is the volume of concrete needed for the set of stairs?
Picture below:
Answer: 2.43m^3
Step-by-step explanation:
HELP please!!
What would the container look like for this depth vs height graph??
the ages of all the patients in the isolation ward of the hospital are 38, 26, 13, 41, and 22. what is the population variance?
To find the population variance of the ages of patients in the isolation ward, we need to calculate the average of the squared deviations from the mean.
To find the population variance, we follow these steps:
Find the mean (average) of the ages:
Mean = (38 + 26 + 13 + 41 + 22) / 5 = 28
Calculate the deviation of each age from the mean:
Deviation1 = 38 - 28 = 10
Deviation2 = 26 - 28 = -2
Deviation3 = 13 - 28 = -15
Deviation4 = 41 - 28 = 13
Deviation5 = 22 - 28 = -6
Square each deviation:
Deviation[tex]1^2[/tex] = [tex]10^2[/tex] = 100
Deviation[tex]2^2[/tex] = [tex](-2)^2[/tex] = 4
Deviation[tex]3^2[/tex] = [tex](-15)^2[/tex] = 225
Deviation[tex]4^2[/tex] = [tex]13^2[/tex] = 169
Deviation[tex]5^2[/tex] = [tex](-6)^2[/tex] = 36
Find the average of the squared deviations:
Variance = (100 + 4 + 225 + 169 + 36) / 5 = 106 / 5 = 21.2
Therefore, the population variance of the ages of patients in the isolation ward is 21.2.
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Question 1 Find the first six terms of the sequence. a1 -4, an -an-1+ 8 (1 point)
0,8, 16, 24, 32, 40
12.20,28, 36, 44, 52
4, 12, 20, 28, 36,44
4.8. 16, 24, 32,40
Question 2 Find the first six terms of the sequence. a1 -8, an 5 an-1(1 point)
-8,-40, -200,-1000,-5000, -25,000 .
8,-40-35,-30,-25,-20
0,5,-40, -35, -30,-25
40, -200, -1000, -5000, -25,000, -125,000
The correct answer is option is 3) 4, 12, 20, 28, 36, 44 and option is 1) -8,-40, -200,-1000,-5000, -25,000.
Question 1= The given sequence is a1 = -4 and an = an-1 + 8.
Here, to find the first six terms of the given sequence, we need to substitute the values of n from 1 to 6.
So, the first six terms of the given sequence are as follows:
The first term, a1 = -4.
Second term, a2 = a1 + 8 = -4 + 8 = 4.
Third term, a3 = a2 + 8 = 4 + 8 = 12.
Fourth term, a4 = a3 + 8 = 12 + 8 = 20.
Fifth term, a5 = a4 + 8 = 20 + 8 = 28.
Sixth term, a6 = a5 + 8 = 28 + 8 = 36.
So, the first six terms of the given sequence are -4, 4, 12, 20, 28 and 36.
Hence, the correct option is 3) 4, 12, 20, 28, 36, 44.
Question 2= The given sequence is a1 = -8 and an = 5an-1.
Here, to find the first six terms of the given sequence, we need to substitute the values of n from 1 to 6.
So, the first six terms of the given sequence are as follows:
First term, a1 = -8.
Second term, a2 = 5a1 = 5(-8) = -40.
Third term, a3 = 5a2 = 5(-40) = -200.
Fourth term, a4 = 5a3 = 5(-200) = -1000.
Fifth term, a5 = 5a4 = 5(-1000) = -5000.
Sixth term, a6 = 5a5 = 5(-5000) = -25,000.
So, the first six terms of the given sequence are -8, -40, -200, -1000, -5000 and -25,000.
Hence, the correct option is 1) -8,-40, -200,-1000,-5000, -25,000.
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What is the greatest common factor of 24, 40 and 32?
A. 1
B. 2
C. 4
D. 8
Answer:
your answer is D. 8
Step-by-step explanation:
ra elaborar un pastel de 2 kg, se necesitan, ¾ de kg de harina y 4 huevos (con un peso de 100 gr cada uno), además de otros ingredientes. ¿Cuál es el peso que tienen los demás ingredientes del pastel?
Based on the above, the weight of the other ingredients in the cake is about 850 grams.
What is the weight about?To determine the weight of the other ingredients in the cake, one need to subtract the weight of the flour as well as the eggs from the total weight of the cake.
Note that from the question:
Weight of flour = ¾ kg = 750 gNumber of eggs = 4Weight of each egg = 100 gSo: Weight of flour and eggs = (Weight of flour) + (Number of eggs × Weight of each egg)
= 750 g + (4 × 100 g)
= 750 g + 400 g
= 1150 g
Hence: The Total weight of the cake = 2 kg = 2000 g
Going further:
Weight of other ingredients = Total weight of the cake - Weight of flour and eggs
= 2000 g - 1150 g
= 850 g
Therefore, the weight of the other ingredients that is seen in the cake is 850 grams.
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See text below
To make a 2 kg cake, ¾ kg of flour and 4 eggs (weighing 100 g each) are needed, in addition to other ingredients. What is the weight of the other ingredients in the cake?
Which mapping represents y as a function?
Answer:
a
Step-by-step explanation:
Answer: J
Step-by-step explanation:
help i really need help WILL GIVE BRAINLIEST
Answer:
3 and 4
Step-by-step explanation:
One hundred draws will be made at random with replacement from one of the following boxes. Your job is to guess what the sum will be, and you win $1 if you are right to within 10. Which box is best? Worst?
(i) 1 9 (ii) 4 6 (iii) 5 5
A. Box (i) is the best and Box (iii) is worst.
B. Box (i) is the best and Box (ii) is worst.
C. Box (ii) is the best and Box (i) is worst.
D. Box (ii) is the best and Box (iii) is worst.
E. Box (iii) is the best and Box (ii) is worst.
F. Box (iii) is the best and Box (i) is worst.
The answer is:Option (F) Box (iii) is the best and Box (i) is worst, for the given one hundred draws will be made at random with replacement from one of the following boxes based on expected-probability.
Given the three boxes:
(i) 1 9(ii) 4 6(iii) 5 5
One hundred draws will be made at random with replacement from one of the above boxes.
Let us now calculate the expected value of the sum for each of the boxes:
(i) Expected value of sum = (1+9)/2 × 100
= 500.
(ii) Expected value of sum = (4+6)/2 × 100
= 500.
(iii) Expected value of sum = (5+5)/2 × 100
= 500.
Box (i) and (ii) have the same expected value, so we can choose either of them.
However, it is important to note that in Box (ii) the numbers are closer together than in Box (i),
so the sum is more likely to be near the expected value.
This makes Box (ii) the best option.
Box (iii) is the worst option as it has a smaller range than the other two boxes,
Which means that it is less likely to produce a sum close to the expected value.
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use a known maclaurin series to obtain a maclaurin series for the given function. f(x) = xe5x
The maclaurin series for the given function xe⁵ˣ = x + 5x² + (25x³)/2! + (125x⁴)/3! + ...
To find the Maclaurin series for the function f(x) = xe⁵ˣ, we can utilize the Maclaurin series expansion of the exponential function, eˣ:
eˣ = 1 + x + (x²)/2! + (x³)/3! + ...
Substituting 5x for x in the above expansion, we have:
e⁵ˣ = 1 + 5x + (5x)²/2! + (5x)³/3! + ...
Multiplying the above series by x, we get:
xe⁵ˣ = x + 5x² + (25x³)/2! + (125x⁴)/3! + ...
This is the Maclaurin series for the function f(x) = xe⁵ˣ.
The calculation involves applying the Maclaurin series expansion of the exponential function to the function f(x) = xe⁵ˣ by substituting 5x for x in the series expansion. Then, multiplying the resulting series by x gives us the desired Maclaurin series for f(x).
The series can be continued by following the pattern of increasing powers of x, with the coefficients determined by the corresponding terms in the expansion.
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I need some answer plssss help me
A. Find the unknown term of each proportion.
1. Answer: X=5
Step-by-step explanation:
x/7=15/21 ==> 21x=7(15) ==> 21x=105
21x/21=105/21 ==> x=5
2. Answer: X=40.5
Step-by-step explanation:
27/x=x/3 ==> 27(3)=x(x) ==> 81=2x
81/2=2x/2 ==> x=40.5
3. Answer: X=16
Step-by-step explanation:
8/x+2=4/9 ==> 8(9)=4(x+2) ==> 72=4x+8
72-8=4x+8-8 ==> 64=4x ==> 64/4=4x/4 ==> x=16
4. Answer: X=8
Step-by-step explanation:
3/x=30/80 ==> 3(80)=30x ==> 240=30x
240/30=30x/30 ==> x=8
5. Answer: M=56
Step-by-step explanation:
m/8=m+7/9 ==> 9m=8(m+7) ==> 9m=8m+56
9m-8m=8m-8m+56 ==> m=56
B. Solve the following.
1. Answer: 80 and 100
Step-by-step explanation:
4:5 ==> 4x+5x=180 ==> 9x=180
9x/9=180/9 ==> x=20
4(20)= 80 5(20)=100
2. Answer: 235.29
Step-by-step explanation:
3400/8 ==> 425
100,000/425= 235.29
Find the area of rhombus with diagonals 6 mm and 9 mm.
PLEASE HELP! 15 POINTS! Select the statement that describes this expression: fraction 1 over 2 x (734 − 246). (2 points)
Group of answer choices
Half the sum of 734 and 246
fraction 1 over 2 the difference between 734 and 246
fraction 1 over 2 the quotient of 734 and 246
2 times the difference between 734 and 246
Answer:
fraction 1 over 2 the difference of 734 and 246.
Read through the list of points about robots. Determine main points, subpoints, and sub-subpoints. Drag each point to its appropriate place on the outline to the right. If using a tablet, please turn your device horizontally In 1773, Pierre and Henri Jaquet-Droz built dolls that could write, play music, and draw pictures. They allow surgeons to operate on patients from thousands A. of miles away They can navigate hospital corridors to deliver pharmaceuticals, X-rays, and bandages Robots have captured the human imagination for centuries. Astronauts use robots to perform maintenance on the International Space Station In 1937, Westinghouse created a seven-foot robot that could walk, talk, blow up balloons, and smoke cigarettes A. Today robots are used in many fields, including space 1. exploration and medicine Robots have become indispensable to space exploration. 2 Robots are becoming more and more important in medicine. 1. In 1497, Leonardo da Vinci designed a mechanical suit of armor that could sit up and move its arms, neck, and jaw. In addition, NASA sends robotic spacecraft to explore distant planets 2
Robots have captured the human imagination for centuries and have become indispensable in many fields, including space exploration and medicine. They have evolved from simple mechanical devices to advanced machines that assist in complex tasks.
Robots have been a source of fascination for humans for centuries. From Leonardo da Vinci’s mechanical suit of armor in 1497 to Westinghouse’s seven-foot robot in 1937, robots have come a long way. Today, robots are used in many fields, including space exploration and medicine. They allow surgeons to operate on patients from thousands of miles away and navigate hospital corridors to deliver pharmaceuticals, X-rays, and bandages. Astronauts use robots to perform maintenance on the International Space Station and NASA sends robotic spacecraft to explore distant planets.
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Need help plz asap im hoping on an answer quick thank you <3
Answer:
I believe the answer is 10
Step-by-step explanation:
Answer:
I think that it might be ten
Step-by-step explanation:
given the system of equations x 3y z = −2 2x 5y z = −5 x 2y 3z = 1 . the determinant of the matrix of coefficients is −3. the value of z in the solution set is:: (a) z=−2/3 (b) z=5/3 (c) z=4/3 (d) z=−2 (e) None of the above
The value of z in the solution set is approximately -8.33 for the determinant of the matrix of coefficients is −3, Option E is the correct answer.
To solve the system of equations, we can use the method of determinants. The value of z can be determined by finding the determinant of the matrix of coefficients.
The given system of equations can be represented as:
| 1 3 1 | | x | | -2 |
| 2 5 1 | × | y | = | -5 |
| 1 2 3 | | z | | 0 |
The determinant of the matrix of coefficients is -3, which is non-zero. This means that the system of equations has a unique solution.
To find the value of z, we need to calculate the determinant of the matrix obtained by replacing the z-column with the constants column:
| 1 3 -2 |
| 2 5 -5 |
| 1 2 0 |
Using the rule of determinants for a 3x3 matrix, we can calculate the determinant:
Det = (1 × (50 - -52)) - (3 × (20 - -51)) + (-2 × (2 × -5 - 51))
= (1(0 + 10)) - (3 × (0 + 5)) + (-2 × (-10 - 5))
= (110) - (35) + (-2 × -15)
= 10 - 15 + 30
= 25
Since the determinant is non-zero, the system has a unique solution. To find the value of z, we divide the determinant of the matrix obtained by replacing the z-column with the constants column by the determinant of the matrix of coefficients:
z = Detz / Det
= 25 / -3
= -8.33
Therefore, the value of z in the solution set is approximately -8.33.
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The question is -
Given the system of equations x + 3y + z = -2
2x + 5y + z = -5
x+ 2y + 3z = 0
The determinant of the matrix of coefficients is -3. The value of z in the solution set is:
(a) z=−2/3
(b) z=5/3
(c) z=4/3
(d) z=−2
(e) None of the above
Just need the answer of what the surface area is
Answer:
54
Step-by-step explanation:
A triangle has sides with lengths of 14 feet, 48 feet, and 50 feet. Is it a right triangle?
Answer:
Yes, it is a right triangle
Step-by-step explanation:
Answer: Yes it is
Note that a right triangle is a triangle with a right angle.
A patient is given 3 mg of morphine to control pain. About 31% of any morphine in the blood is washed out every hour. (a) Construct a function that models the level M of morphine (in mg) in the blood t hours after one dose. M = (b) How much morphine (in mg) remains in the blood after 5 hours? (Round your answer to two decimal places.) mg (c) Estimate how long, in hours, it will take for the amount of morphine left to drop to 0.1 mg. (Round your answer to two decimal places.) h
a) the function that models the level M of morphine (in mg) in the blood t hours after one dose is M = [tex]3 * (0.69)^t[/tex]
b) 0.50 mg of morphine remains in the blood after 5 hours.
c) it will take approximately 14.67 hours for the amount of morphine left to drop to 0.1 mg.
(a) To construct a function that models the level M of morphine (in mg) in the blood t hours after one dose, we can use the formula for exponential decay:
M = [tex]initial amount * (1 - decay rate)^t[/tex]
Given that the patient is initially given 3 mg of morphine and 31% (0.31) of any morphine is washed out every hour, we can write the function as:
M = [tex]3 * (1 - 0.31)^t[/tex]
Simplifying further, we have:
M = [tex]3 * (0.69)^t[/tex]
Therefore, the function that models the level M of morphine (in mg) in the blood t hours after one dose is M = [tex]3 * (0.69)^t[/tex]
(b) To find out how much morphine remains in the blood after 5 hours, we can substitute t = 5 into the function and calculate the value of M:
M = 3 * (0.69)⁵
M ≈ 3 * 0.1681
M ≈ 0.5043
So, approximately 0.50 mg of morphine remains in the blood after 5 hours.
(c) To estimate how long it will take for the amount of morphine left to drop to 0.1 mg, we need to find the value of t when M = 0.1 in the function:
0.1 = [tex]3 * (0.69)^t[/tex]
Dividing both sides by 3:
0.0333 ≈ [tex](0.69)^t[/tex]
Taking the logarithm of both sides:
log(0.0333) ≈ [tex]log[(0.69)^t][/tex]
Using the logarithm properties, we can bring down the exponent:
log(0.0333) ≈ t * log(0.69)
Now, we can solve for t by dividing both sides by log(0.69):
t ≈ log(0.0333) / log(0.69)
Calculating this expression:
t ≈ -2.3859 / -0.1625
t ≈ 14.67
So, it will take approximately 14.67 hours for the amount of morphine left to drop to 0.1 mg.
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LEGIT BEG PLEASE HELP
Answer:
help with what problem?
Step-by-step explanation:
Answer:
Sure
Step-by-step explanation:
Find the length of the missing side.
7
24
A 25
B.168
C 31
D. 625
Answer: C
Step-by-step explanation: #1 because if you add 24 and 7 it looks like the other side.
Answer:
A. 25
Step-by-step explanation:
By Pythagoras theorem,
[tex] {25}^{2} = {24}^{2} + {7 }^{2} \\ 625 = 576 + 49 \\ 62 5= 625 \\ therefore \: 25 \: is \: the \: correct \: \: answer.[/tex]
A random poll of 800 middle school students found that 9% are ESL (English as a Second Language) learners. Estimate the actual percentage of ESL learners by constructing a 95% confidence interval. Separately, a local school board member claimed that 15% of students are ESL learners. Is the board member's claim plausible? The 95% confidence interval is 7% to 11% and, yes the board member's claim of 15% is plausible since his claim is inside of the confidence interval The 95% confidence interval is 7% to 11% and, no the board member's claim of 15% is not plausible since his claim is outside of the confidence interval The 95% confidence interval is 9% and, no the board member's claim of 15% is not plausible since his claim is outside of the confidence interval The 95% confidence interval is 0% to 18% and, yes the board member's claim of 15% is plausible since his claim is inside of the confidence interval QUESTION 26 A stationary time series is one whose properties depend on the time the series is observed and are likely to exhibit trends and seasonality. True False
The given statement "A stationary time series is one whose properties depend on the time the series is observed and are likely to exhibit trends and seasonality" is false.
The confidence interval provides a range of values in which the actual value of a population parameter is likely to fall.
A random poll of 800 middle school students found that 9% are ESL (English as a Second Language) learners.
The confidence interval estimates the actual percentage of ESL learners by constructing a 95% confidence interval.
Let us calculate the 95% confidence interval to check the board member's claim.
The point estimate is:9%
The margin of error is calculated as:
ME=1.96×√(pˆ(1−pˆ)/n)=1.96×√(0.09(1−0.09)/800)=0.0228
Since the margin of error is small enough relative to the point estimate, we can approximate the confidence interval using:
pˆ±ME=0.09±0.0228
=(0.0672,0.1128)
The 95% confidence interval is (0.0672, 0.1128).
Now we can check if the board member's claim of 15% is plausible or not:
15% falls outside the 95% confidence interval of (0.0672, 0.1128).
Hence, we can conclude that the board member's claim of 15% is not plausible since his claim is outside of the confidence interval.
False is the correct answer to the given question.
A stationary time series is one whose properties do not depend on the time the series is observed and do not exhibit trends and seasonality.
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Explain how you could figure out the formula for the surface area of a cylinder if all you knew was the formula for surface area of a right rectangular prism. k
If you know the formula for the surface area of a right rectangular prism, you can use that knowledge as a basis to derive the formula for the surface area of a cylinder.
Deriving the surface area of a cylinder from the surface area of a right rectangular prismRecall the formula for the surface area of a right rectangular prism:
SA_prism = 2lw + 2lh + 2wh
where l, w, and h represent the length, width, and height of the prism, respectively.
Consider a cylinder as a special case of a prism with a circular base and a height. The circular base can be thought of as a rectangle with a length equal to the circumference of the base (2πr) and a width equal to the height (h) of the cylinder.
The curved surface of the cylinder can be "unrolled" and flattened to form a rectangle, with the length equal to the circumference of the base (2πr) and the width equal to the height (h) of the cylinder.
Thus, the surface area of the curved part of the cylinder is equal to the surface area of the rectangular prism with dimensions 2πr and h.
Thus, the formula for the surface area of the cylinder can be derived as follows: SA_cylinder = 2πrh.
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