The distance between the points (1, 2) and (1, -10) is 12 square units
We have to find the distance between (1, 2) and (1, -10)
The length along a line or line segment between two points on the line or line segment.
Distance=√(x₂-x₁)²+(y₂-y₁)²
=√(1-1)²+(-10-2)²
=√-12²
=√144
=12 square units
Hence, the distance between (1, 2) and (1, -10) is 12 square units
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At the burger palace, 2 hamburgers and 1 small order of fires cost 6. 9
The cost of one small order of fries at the Burger Palace is $1.09. The correct answer is not given in any option.
The price is another name for the cost of a thing from the perspective of a consumer. This is the price the seller sets for a product, which takes into account both the cost of manufacture and the markup the seller adds to increase profits.
Let's say a hamburger costs x dollars and a small order of French fries costs y dollars.
x--------> the cost of one hamburger
y--------> the cost one small order fries
we know that
2x+y=6.50
5x+5y=17.75
using a graph tool
see the attached figure
the solution is
x=2.5
y=1.09
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The complete question is
At The Burger Palace, 2 hamburgers and 1 small order of fries costs $6.50. The Clarke family ordered 5 hamburgers and 5 small orders of fries and paid $17.75.
Select the TWO equations that fit the scenario described above.
A) 2x+y=6.50
B) 6.50x+17.75y=5
C) 2x+5y=24.25
D) 5x+5y=6.50
E) 5x+5y=17.75
The probability that X is a 2, 11, or 12 is:
a.) 1/36
b.) 2/36
c.) 3/36
d.) 4/36
Answer:
The correct answer is c.) 3/36.There are three favorable outcomes (2, 11, and 12) out of a total of 36 possible outcomes (assuming a fair six-sided number cube). Therefore, the probability of X being a 2, 11, or 12 is 3/36, which can be simplified to 1/12.
Step-by-step explanation:
QUESTION 1 of 10: A manufacturer buys a new machine that costs $50,000. The estimated useful life for the machine is ten years. The
machine can produce 1,000 units per month. If the machine ran at its capacity for ten years, what would be the fixed cost per unit based on
the cost of the machine per part manufactured? (Round to the nearest penny)
a) $. 42 / unit
ООО
b) $1. 00/unit
c) S4,167 / unit
d) $5. 000/unit
The fixed cost per unit based on cost of the machine per part manufactured is $0.42 per unit. Option ( A )
What is multiplication ?Multiplication is a mathematical operation that involves finding the product of two or more numbers or quantities. It is a way of adding a number to itself multiple times. The symbol used to represent multiplication is an "x" or a dot "·". For example, in the expression 5 x 6 = 30, 5 and 6 are multiplied together to give the product of 30. Multiplication can also be represented using parentheses, such as (5)(6) = 30. In addition, multiplication can be done with decimals, fractions, variables, and matrices.
To find the fixed cost per unit based on the cost of the machine per part manufactured, we need to calculate the total number of units produced by the machine over its estimated useful life, and then divide the cost of the machine by that number.
The machine runs at its capacity of 1,000 units per month for 10 years, so the total number of units produced by the machine is:
10 years x 12 months/year x 1,000 units/month = 120,000 units
The cost of the machine is $50,000, so the fixed cost per unit based on the cost of the machine per part manufactured is:
$50,000 ÷ 120,000 units = $0.4167 per unit
Rounding this to the nearest penny gives us the final answer of:
$0.42 per unit (option a)
Therefore, the fixed cost per unit based on cost of the machine per part manufactured is $0.42 per unit.
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Let A be a nonsingular matrix. Prove that if B is row-equivalent to A, then B is also nonsingular.
Show work, explain and simplify for lifesaver
If B is row-equivalent to a nonsingular matrix A, then B is also nonsingular.
Suppose that A is a nonsingular matrix, which means that A has an inverse denoted by A[tex]^{-1}.[/tex]
Now let B be a matrix that is row-equivalent to A. This means that we can obtain B from A by applying a finite sequence of elementary row operations.
Since elementary row operations do not change the row space of a matrix, the row space of B is the same as the row space of A. This means that B has the same rank as A.
Since A is nonsingular, it has full rank (i.e., rank(A) = n, where n is the number of rows or columns in A). Therefore, B also has full rank, which means that B is also a nonsingular matrix.
To see this more explicitly, suppose that B is singular, which means that there exists a non-zero vector x such that Bx = 0.
Since B is row-equivalent to A, we have that Ax = 0 (since the row space of B is the same as the row space of A).
But this contradicts the fact that A is nonsingular, since if Ax = 0 then x = [tex]A^{-1}Ax = A^{-1}0 = 0.[/tex]
Therefore, B cannot be singular and must be nonsingular.
In summary, if B is row-equivalent to a nonsingular matrix A, then B is N also nonsingular.
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Mr. Di IORIO has accepted a $600 000 mortgage which charges 3.59% interest per year. Determine how much Mr. Di IORIO will save in total interest charges if he decides his monthly payments are to be amortized over 20 years instead of 25 years.
Mr. Di IORIO will save $40022.4 in total interest charges if he decides to amortize his mortgage over 20 years instead of 25 years.
Total interest charges = (Monthly payment x Total number of payments) - Principal
We can use a mortgage calculator or a formula to calculate the monthly payment for a $600,000 mortgage with a 3.59% interest rate amortized over 25 years. Using the formula:
Monthly payment = [tex](P\times r) / (1 - (1 + r)^{(-n)})[/tex]
where P is the principal ($600,000), r is the monthly interest rate (0.0359 / 12), and n is the total number of payments (25 years x 12 months per year = 300 payments).
Plugging in the values, we get:
Monthly payment = (600000 x 0.00299) / (1 - (1 + 0.00299)^(-300))
≈ $3032
Using this monthly payment, we can calculate the total interest charges for the 25-year mortgage:
Total interest charges = (3032 x 300) - 600000
= $309600
Now let's calculate the total interest charges for a 20-year mortgage. Using the same formula as above, but with n = 20 years x 12 months per year = 240 payments, we get:
Monthly payment = (600000 x 0.0033) / (1 - (1 + 0.0033)^(-240))
≈ $3623.24
Using this monthly payment, we can calculate the total interest charges for the 20-year mortgage:
Total interest charges = (3623.24 x 240) - 600000
= $269577.6
The difference in total interest charges between the 25-year and 20-year mortgages is:
Total interest charges (25 years) - Total interest charges (20 years)
= $309600 - $269577.6
= $40022.4
Therefore, Mr. Di IORIO will save $40022.4 in total interest charges if he decides to amortize his mortgage over 20 years instead of 25 years.
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Help WILL GIVE BRAINLIEST HEELLPPO
Answer:
B: 4.5
Step-by-step explanation:
Let us assume you explore rare events in stock market's volatility. You use realized volatility and the
model P(X> x) = Cx-a. You think the that [a] = 3,3 and you think that on 40 days the volatility
is larger 15% in a given year. On how many days do you expect the volatility to exceed 40% in a
given year? Mark the right answer:
a.On 5.19 days
b.On 4.19 days
c.On 3.19 days
d.On 2.19 days
e. I do not expect the volatility to exceed 40% on a single day.
The volatility of the stock market, according to the given model, will exceed 40% in 4.19 days.
Using the given model P(X> x) = Cx-a and assuming [a] = 3.3, we can solve for C by using the fact that on 40 days the volatility is larger than 15% in a given year:
P(X > 0.15) = C(0.15)-3.3 = 40/365
C = (40/365)/(0.15)-3.3 = 0.2702
Now we can solve for the probability of the volatility exceeding 40% in a given year:
P(X > 0.4) = 0.2702(0.4)-3.3 = 0.0005
To find the expected number of days with volatility exceeding 40%, we multiply this probability by the number of trading days in a year (assume 252 trading days):
Expected number of days = 0.0005 * 252 = 0.126
Rounding to the nearest whole number, we get:
b. On 4.19 days
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The null and alternative hypotheses for a population proportion, as well as the sample results, are given. Use StatKey or other technology to generate a randomization distribution and calculate a p-value. StatKey tip: Use "Test for a Single Proportion" and then "Edit Data" to enter the sample information.
Hypotheses: H0:p=0.5 vs Ha:p<0.5;
Sample data: p^=38100=0.38 with n=100
Round the p-value to three decimal places.
p-value = Enter your answer in accordance to the question statement
We do not have enough evidence to reject the null hypothesis at the 5% significance level.
To generate a randomization distribution and calculate the p-value for this problem, we can use StatKey and select "Test for a Single Proportion" under the "Randomization Test" section. We then enter the sample information by clicking "Edit Data" and inputting p^=0.38 and n=100. The null hypothesis is that the population proportion is equal to 0.5, while the alternative hypothesis is that the population proportion is less than 0.5. Our sample result is p^=0.38. Using StatKey, we can generate a randomization distribution by clicking "Simulate" and then "Randomize".
We can then calculate the p-value by finding the proportion of randomization samples that have a proportion less than or equal to our sample proportion of 0.38. After running the simulation, we obtain a p-value of 0.168. Rounding to three decimal places, the p-value is 0.168.
Therefore, we do not have enough evidence to reject the null hypothesis at the 5% significance level.
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Why is the Confusion Matrix so named?-Data mining is very confusing and the Confusion Matrix reflects thatconfusion.-It is very confusing to understand.-Because it captures metrics that show how the trained model may beconfused in distinguishing between positive and negative classes ofthe output variable.
The Confusion Matrix is so named :
because it captures metrics that show how the trained model may be confused in distinguishing between positive and negative classes of the output variable.
In the context of data mining, the Confusion Matrix helps to measure the performance of a classification algorithm. It displays the true positive, true negative, false positive, and false negative values, which provide insight into how well the model is performing and where it might be making errors.
The matrix presents a tabular representation of predicted and actual classification results, which can be used to evaluate the performance of a classification model. The confusion arises from the fact that the model may misclassify samples, leading to confusion about the true performance of the model. The Confusion Matrix provides a way to quantify and visualize this confusion, and is a useful tool for evaluating the accuracy of machine learning models.
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What is the probability of getting a fish taco (crunchy or soft)?
The probability of getting a fish taco (crunchy or soft) is 0.2.
What is the probability?Probability is identifiable as the measure of the probable likelihood or chance of a particular event manifesting itself. As a matter of mathematical fact, it serves to quantitatively assess and analyze uncertainty in occurrences ranging from gambling and random contests to atmospheric predictions and scientific breakthroughs.
Since there are 20 taco fish out of 100. The probability of getting a fish taco (crunchy or soft) is:
= 20 / 100
= 0.2.
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There are 20 taco fish out of 100. What is the probability of getting a fish taco (crunchy or soft) is 0.2.
When the population standard deviation is known, the confidence interval for the population mean is based on the:Chi-square statistict-statisticz-statisticF-statistic
When the population standard deviation is known, the confidence interval for the population mean is based on the z-statistic.
When the population standard deviation is known, the confidence interval for the population mean is based on the z-statistic.
The formula for the confidence interval for the population mean when the population standard deviation is known is given by:
CI = X ± z(α/2) * σ/√n
Where:
X is the sample mean
σ is the population standard deviation
n is the sample size
z(α/2) is the z-score corresponding to the desired level of confidence (e.g. for a 95% confidence interval, α = 0.05 and z(α/2) = 1.96)
The z-statistic is used in this formula to determine the width of the confidence interval. It is based on the standard normal distribution and represents the number of standard deviations the sample mean is from the population mean. The z-score is calculated using the formula:
z = (X - μ) / (σ/√n)
Where μ is the population mean.
The z-score is used to find the critical values for the confidence interval, which are obtained by multiplying it by the standard error of the mean (σ/√n). These critical values define the endpoints of the confidence interval.
In summary, when the population standard deviation is known, the confidence interval for the population mean is based on the z-statistic, which is used to calculate the critical values for the confidence interval.
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Suppose 100 00 lamps are being manufactured
The number of batches of lamps that should be manufactured annually is 10 batches per year.
To find the number of batches of lamps that should be manufactured annually, we need to consider the trade-off between setup costs and storage costs. Each time a batch of lamps is manufactured, there is a setup cost of $500. However, this setup cost can be spread across the number of lamps in the batch to reduce storage costs.
Let's assume that each batch contains x lamps. This means that there are 100,000/x batches per year. The setup cost for each batch is $500, so the total setup cost per year is:
$500 x (100,000/x) = $500,000/x
The storage cost for each lamp is $1 per year, so the total storage cost per year is:
$1 x 100,000 = $100,000
To minimize the total cost, we need to find the value of x that minimizes the sum of the setup cost and storage cost:
Total Cost = Setup Cost + Storage Cost
= $500,000/x + $100,000
To minimize this function, we can take its derivative with respect to x and set it equal to zero:
d(Total Cost)/dx = -500,000/x² = 0
x = √(500,000) = 707.11
However, since x must be a whole number, we round up to get x = 708.
Therefore, the number of batches of lamps that should be manufactured annually is 100,000/708 ≈ 141.24. However, since we can't manufacture a fraction of a batch, we round down to get the final answer of 10 batches per year.
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Complete Question:
Suppose 100,000 lamps are to be manufactured annually. It costs $1 to store a lamp for 1 year, and it costs $500 to set up the factory to produce a batch of lamps. Find the number of batches of lamps that should be manufactured annually.
Need help quick please!!!
Answer:
b = 12 Km
Step-by-step explanation:
using Pythagoras' identity in the right triangle
the square on the hypotenuse is equal to the sum of the squares on the other 2 sides , that is
b² + 16² = 20²
b² + 256 = 400 ( subtract 256 from both sides )
b² = 144 ( take square root of both sides )
b = [tex]\sqrt{144}[/tex] = 12
0.32 + /100 = 0.54 + 32/100
Answer:
54
Step-by-step explanation:
0.32 + /100 = 0.54 + 32/100
0.32 + x/100 = 0.54 + 0.32
x / 100 = 0.54
x = 54
So, the answer is 54
Simon bought a pack of butter for baking. The pack has 8 sticks of butter that are each ½ of a cup. Simon used 1 ¼ cup of butter to make brownies, ¾ cup of butter to make cake, and 1 ¼ cup of butter to make cookies. How much butter does Simon have left?
....................................
Which graph represents the solution set of the system of inequalities?
y≤2x+1
y>−2x−3
The graph of the system of inequalities is the one in the bottom left corner.
Which is the graph of the system of inequalities?Here we have the following system of inequalities:
y ≤ 2x+1
y > −2x−3
The first inequality has the symbol "≤", then the liine should be a solid line, and we need to have the region below the line shaded. Also notice that this line has a positive slope, so it goes up.
The second line has the symbol ">", so here we have a dashed line and the region shaded must be above the line, this line has a negative slope.
Then the graph of the system of inequalities is the one in the bottom left.
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please help sorry if its a lot
The values in the expression will be:
a. 4x
b. -4x
c. -16x
d. 4x + 5
e. 4x
f. 5x
g. 10 - 6x
h. 2x - 10
How to explain the expressionIt is important to note that an expression is simply used to show the relationship between the variables that are provided or the data given regarding an information.
Based on the information, it should be noted that:
10x - 6x
= 4x
6x - 4x
= 2x
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10
TIME REMA
59:4
What is the difference between marginal cost and marginal revenue?
O Marginal cost is the money earned from selling one more unit of a good. Marginal revenue is the money paid f
producing one more unit of a good.
Marginal cost is the money paid for producing one more unit of a good. Marginal revenue is the money earned
from selling one more unit of a good.
Marginal cost is the money a producer might make from one more unit. Marginal revenue is the money a produ
actually makes from one more unit.
O Marginal cost is the money a producer actually makes from one more unit. Marginal revenue is the money a
producer might make from one more unit.
The difference is: Marginal cost is the money paid for producing one more unit of a good. Marginal revenue is the money earned from selling one more unit of a good.
What is Marginal cost and Marginal revenue?Marginal cost (MC) is the additional outlay expended by a producer when they fabricate and supply one supplementary unit of an item or service. It symbolizes the replace in total costs caused by producing one extra piece.
Marginal revenue (MR), on the other hand, is the supplementary turnover generated when an establishment deals one more piece of a good or service. It signifies the transformation in complete revenue attained from selling an supplemental product.
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can anyone help me solve this
The measure of angle KJL is determined as 58 ⁰.
The value of angle KML is 116 ⁰.
What is the measure of angle KJL?The measure of angle subtended by the KJL is calculated by applying the following formula.
Based on the angle of intersecting chord theorem, we will have the following equation.
m∠KJL = ¹/₂(KL )
m∠KJL = ¹/₂ x 116
m∠KJL = 58⁰
The value of angle KML is calculated as;
m∠KML = 2 m∠KJL (angle at center twice angle at circumference)
m∠KML = 116⁰
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If h is the inverse function of f and if f(x) = , then h'(3) =
We need to find the inverse of the function f(x) = 1/x. Therefore, h'(3) = -1/[tex]3^2[/tex] = -1/9. So, h'(3) = -1/9.
In the equation expressing the function, swap out f(x) with y. Swap out x and y. To put it another way, swap out every x for a y and vice versa.
An inverse in mathematics is a function that is used to another function.
Calculate y using a solution.
To find the inverse, we switch the x and y variables and solve for y:
x = 1/y
y = 1/x
So the inverse function of f(x) = 1/x is h(x) = 1/x.
Now, we need to find h'(3), the derivative of h(x) at x = 3.
h(x) = 1/x, so using the power rule of differentiation, we get:
h'(x) = -1/[tex]x^2[/tex]
Therefore, h'(3) = -[tex]1/3^2[/tex] = -1/9.
So, h'(3) = -1/9.
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Correct Question:
If h is the inverse function of f and if f(x) = 1/x, then h'(3) =
Why is the straightedge of a ruler not the same as a line?
Since a straightedge lacks measurement gradients, it can only be used to create or draw straight lines—not to measure length.
An instrument for drawing straight lines or ensuring their straightness is a straightedge or straight edge. It is typically referred to as a ruler if its length is marked with uniformly spaced markings. If no markings are present, it is just a straight edge.
Straight lines can be measured and marked with a ruler. A straight edge won't help you measure, but since they are typically more robustly constructed than rulers, they are a better tool for drawing straight lines. Most of the time, rulers can be used as a straight edge.
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(e) (5 points) Let W be the set of all strings of length 4 containing only lower-case letters (a-z). For example, the strings ysua and cvui are elements of W.
Relation H is defined over W such that for any strings x and y, xHy if x can be changed into y by replacing exactly one letter with a different letter.
Here are two examples of (x, y) pairs that are H-related:
⚫ (bank, bonk) - the second letter is changed
⚫ (abcd, bbcd) - the first letter is changed
3. (6 points) Let P(n) be the statement that 23n-1 is divisible by 7. Prove P(n) by induction for all integers n > 2.
To prove P(n) by induction for all integers n > 2:
Base case:
When n = 3, we have 23(3)-1 = 7, which is clearly divisible by 7. Thus, P(3) is true.
Inductive step:
Assume P(k) is true for some induction integer k > 2, i.e. 23k-1 is divisible by 7.
Now, we need to prove that P(k+1) is also true, i.e. 23(k+1)-1 is divisible by 7.
We know that 23(k+1)-1 = 2(23k-1) + 7. Since 23k-1 is divisible by 7 (by the assumption), we can express it as 23k-1 = 7m for some integer m.
Substituting this in the above equation, we get:
23(k+1)-1 = 2(7m) + 7 = 7(2m+1)
Since 2m+1 is an integer, we see that 23(k+1)-1 is also divisible by 7. Therefore, P(k+1) is true.
By the principle of mathematical induction, we have proved that P(n) is true for all integers n > 2.
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Which statements are always true regarding the diagram? Select three options. m∠5 + m∠3 = m∠4 m∠3 + m∠4 + m∠5 = 180° m∠5 + m∠6 =180° m∠2 + m∠3 = m∠6 m∠2 + m∠3 + m∠5 = 180°
The statements that are true are:
m∠5 + m∠6 = 180°
m∠2 + m∠3 = m∠6
m∠2 + m∠3 + m∠5 = 180°
Options C, D, and E are the correct answer.
We have,
The sum of the three angles in a triangle is 180.
Exterior Angle Theorem.
The exterior angle in a triangle is equal to the sum of the two interior angles that are not adjacent to it.
From the figure,
∠2 + ∠3 + ∠5 = 180 ( sum of the angles in a triangle )
∠6 = ∠2 + ∠3 ( exterior angles definition )
∠4 = ∠2 + ∠5 ( exterior angles definition )
∠5 + ∠6 = 180 { straight angle )
Thus,
The statements that are true are:
m∠5 + m∠6 = 180°
m∠2 + m∠3 = m∠6
m∠2 + m∠3 + m∠5 = 180°
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Assume z is a standard normal random variable. What is the value of z if the area to the right of zis 9803? 0 -2.06 4803 0.0997 3.06
The value of z, In the above statistics-based question where the area to the right of z is 0.9803, is approximately 1.81.
In statistics, the standard normal distribution is a specific distribution of normal random variables with a mean of 0 and a standard deviation of 1. The area under the curve of a standard normal distribution is equal to 1, and the distribution is symmetric around the mean of 0.
To find the value of z for a given area to the right of z, we can use a standard normal distribution table or calculator. For example, using a standard normal distribution table, we can find the value of z that corresponds to an area of 0.0197 to the left of z. This value is approximately -1.81. Since the area to the right of z is 0.9803, we can find the value of z by subtracting -1.81 from 0, which gives us approximately 1.81.
Alternatively, we can use the inverse normal distribution function in Excel or another statistical software package to find the value of z directly. For example, the Excel function NORMSINV(0.9803) returns a value of approximately 1.81, which is the same as the value we obtained using the standard normal distribution table.
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The circle below has center C, and its radius is 7 yd. Given that mZDCE = 100°, find the length of the major arc DFE. Give an exact answer in terms of , and be sure to include the correct unit in your answer. F 100 Length of major arc DFE: D/O 8 JT yd yd² X yd³
The length of the major arc DFE is 10.11 π ft.
Given that, a circle C, with central angle 100°, and radius 7 yards,
We need to find the length of the major arc DFE,
The length of an arc = central angle / 360° × circumference
The central angle for the arc DFE = 360° - 100° = 260°
So, the length = 260° / 360° × π × 14
= 10.11 π ft
Hence, the length of the major arc DFE is 10.11 π ft.
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Partice moves on a coordinate line with acceleration d^2s/dx^2 = 30√t- 6/√t subject to the conditions that ds/dt = 911 and s=14 when t=1. Find the velocity v=ds/dt in terms of t and the position s in terms of t.
The velocitu v = ds/dt in terms of t is v = __
The position s in terms of t is s = __
The velocity v in terms of t is: v = [tex]20t^{ \frac{3}{2} } - 12t^{\frac{1}{2} } + 923[/tex]
The position s in terms of t is: s = [tex]40t^{ \frac{5}{2} } /5 - 24t^{\frac{2}{3} } /3 + 923t - 949[/tex]
Calculating Velocity and Position:To find the velocity and position functions given the acceleration and initial conditions.
Use the fact that acceleration is the second derivative of position with respect to time and that velocity is the first derivative of position with respect to time, to perform the integrations.
We also used the initial conditions given for velocity and position at a specific time to solve for the constants of integration.
Here we have
Partice moves on a coordinate line with acceleration d²s/dx² = 30√t- 6/√t subject to the conditions that ds/dt = 911 and s = 14 when t = 1.
To find the velocity, integrate the acceleration with respect to t once:
=> d²s/dx² = 30√t- 6/√t
=> ds/dt = ∫(d²s/dx²)dt
= ∫(30√t- 6/√t)dt
= [tex]20t^{ \frac{3}{2} } - 12t^{\frac{1}{2} } + C[/tex]
Using the initial condition ds/dt = 911 when t = 1, we can solve for C:
=> ds/dt = [tex]20t^{ \frac{3}{2} } - 12t^{\frac{1}{2} } + C[/tex]
=> 911 = [tex]20(1)^{ \frac{3}{2} } - 12(1)^{\frac{1}{2} } + C[/tex]
=> C = 923
Therefore, the velocity v in terms of t is:
=> v = [tex]20t^{ \frac{3}{2} } - 12t^{\frac{1}{2} } + 923[/tex]
To find the position, we can integrate the velocity with respect to t once:
=> ds/dt = [tex]20t^{ \frac{3}{2} } - 12t^{\frac{1}{2} } + 923[/tex]
=> s = ∫(ds/dt)dt = [tex]\int\limits } \, 20t^{ \frac{3}{2} } - 12t^{\frac{1}{2} } + 923[/tex]
=> s = [tex]40t^{ \frac{5}{2} } /5 - 24t^{\frac{2}{3} } /3 + 923t + C'[/tex]
Using the initial condition s = 14 when t = 1, we can solve for C':
=> 14 = [tex]40 (1)^{ \frac{5}{2} } /5 - 24(1)^{\frac{2}{3} } /3 + 923t + C'[/tex]
=> C' = -949
Therefore,
The velocity v in terms of t is: v = [tex]20t^{ \frac{3}{2} } - 12t^{\frac{1}{2} } + 923[/tex]
The position s in terms of t is: s = [tex]40t^{ \frac{5}{2} } /5 - 24t^{\frac{2}{3} } /3 + 923t - 949[/tex]
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Please help ASAP I will rate you thumbs up 12
Determine if the sequence {an} a solution of the recurrence relation an = 8an-1 – 16an-2 if = 1. an = 1 b. an = 4" Thoroughly explain your reasoning for each part, providing the appropriate algebrai
To determine if the sequence {an} is a solution of the recurrence relation an = 8an-1 – 16an-2, we need to substitute the given values of an and check if the equation holds true.
a) If an = 1, then we have:
an = 1
an-1 = a0 (since we don't have any values before a0)
an-2 = a-1 (which is not defined since a-1 is outside the domain of the sequence)
Substituting these values in the recurrence relation, we get:
1 = 8a0 - 16a-1 (using a0 = a-1 = 0, since they are undefined)
Simplifying this equation, we get:
1 = 0, which is not true. Therefore, the sequence {an} is not a solution of the recurrence relation if an = 1.
b) If an = 4, then we have:
an = 4
an-1 = a3
an-2 = a2
Substituting these values in the recurrence relation, we get:
4 = 8a3 - 16a2
Simplifying this equation, we get:
2 = 4a3 - 8a2
1/2 = 2a3 - 4a2
1/8 = a3 - 2a2
Therefore, the sequence {an} is a solution of the recurrence relation if an = 4.
In summary, the sequence {an} is not a solution of the recurrence relation if an = 1, but it is a solution if an = 4. This is because the recurrence relation is not satisfied for an = 1, but it is satisfied for an = 4.
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Solve the inequality 3y<6
Answer:
Solving the inequality for y in 37<7 would be
y<2
A sleep study administered to US adults showed that the amount of sleep (in hours) they get in a 24- hour period is normally distributed with a mean of 6.5 hours and a standard deviation of 1.25 hours. Use normal probability calculations to answer the follwing questions. Show your calculator functions to receive full credit. Round your answers to 4 decimals. 1. (no pts) A. How many hours of sleep did you get last night (round to nearest quarter of an hour)? B. Ask an adult friend or a family member how many hours of sleep he/she got last night (round to nearest quarter of an hour). Report below. Make sure it is different than your sleep amount. 2. (2 pts) What is the probability that a randomly selected US adult slept more than you did last night? 3. (2 pts) What is the probability that a randomly selected US adult slept less than your friend or family member did last night? 4. (2 pts) Doctors recommend 8 hours of sleep per day for adults to have the health benefits of sleep. What percent of US adults sleep less than this recommended amount? 5. (2 pts) A colleague at work says that she usually sleeps less than 4 hours each day. Is her sleep amount unusual? Justify your answer by calculating its probability. 6. (2 pts) 10% of US adults sleep more than how many hours?
10% of US adults sleep more than 7.9 hours per day .
We need to calculate the z-score for your sleep amount and find the area to the right of that z-score. z = (x - μ) / σ = (x - 6.5) / 1.25. Let's assume you got 7 hours of sleep. z = (7 - 6.5) / 1.25 = 0.4. Using a standard normal table or calculator, we find that the probability of a randomly selected US adult sleeping more than you did last night is 0.3446 (or 34.46%).
We need to calculate the z-score for your friend's sleep amount and find the area to the left of that z-score. z = (x - μ) / σ = (7.25 - 6.5) / 1.25 = 0.6. Using a standard normal table or calculator, we find that the probability of a randomly selected US adult sleeping less than your friend or family member did last night is 0.2743 (or 27.43%).
We need to calculate the z-score for 8 hours of sleep and find the area to the left of that z-score. z = (8 - 6.5) / 1.25 = 1.2. Using a standard normal table or calculator, we find that the percentage of US adults sleeping less than 8 hours per day is 0.1151 (or 11.51%).
We need to calculate the z-score for 4 hours of sleep and find the area to the left of that z-score. z = (4 - 6.5) / 1.25 = -2.0. Using a standard normal table or calculator, we find that the probability of a US adult sleeping less than 4 hours per day is 0.0228 (or 2.28%). This is a very low probability, so we can say that sleeping less than 4 hours per day is unusual.
We need to find the z-score that corresponds to the top 10% of the distribution. Using a standard normal table or calculator, we find that the z-score is approximately 1.28. Then, we can solve for x: z = (x - μ) / σ -> 1.28 = (x - 6.5) / 1.25 -> x = 7.9 hours. So, 10% of US adults sleep more than 7.9 hours per day.
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shipping charges at an online bookstore are $4 for one book, $6 for two books, and $7 for three to fve books. last week, there were 6400 orders of fve or fewer books, and total shipping charges for these orders were $33,600. the number of shipments with $7 charges was 1000 less than the number with $6 charges. how many shipments were made in each category (one book, two books, three to fve books)?
There were 5500 shipments of one book, 2500 shipments of two books, and 1500 shipments of three to five books.
Let's denote the number of shipments for one book, two books, and three to five books as x, y, and z respectively. Then we can set up a system of equations based on the given information:
x + 2y + 3z = total number of books shipped
4x + 6y + 7z = total shipping charges
We know that there were 6400 orders of five or fewer books, so we can set an upper bound on the total number of books shipped:
x + y + z <= 6400
We also know that the number of shipments with $7 charges was 1000 less than the number with $6 charges, so:
z = y - 1000
Now we can substitute the last equation into the first two equations to eliminate z:
x + 2y + 3(y - 1000) = total number of books shipped
4x + 6y + 7(y - 1000) = total shipping charges
Simplifying and rearranging:
x - y = 3000
3x - y = 16000
Solving this system of equations gives:
x = 5500
y = 2500
z = 1500
There were 1500 shipments of three to five books, 2500 of two books, and 5,500 of one book.
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