The derivative of r(t) is:
\(r'(t) = (-2t/(17-t^2)) i + (1/(2√(16+t))) j + (56kte^(-8tk)) k\)
To find the derivative of the vector function r(t), we need to take the derivative of each component separately.
The derivative of\(ln(17-t^2)\) with respect to t is:
\(d/dt ln(17-t^2) = -2t/(17-t^2)\)
So the first component of r'(t) is:
\(r_1'(t) = -2t/(17-t^2) i\)
The derivative of √(16+t) with respect to t is:
\(d/dt √(16+t) = 1/(2√(16+t))\)
So the second component of r'(t) is:
\(r_2'(t) = 1/(2√(16+t)) j\)
The derivative of -7e^(-8tk) with respect to t is:
\(d/dt (-7e^(-8tk)) = 56kte^(-8tk)\)
So the third component of r'(t) is:
\(r_3'(t) = 56kte^(-8tk) k\)
Putting it all together, the derivative of r(t) is:
\(r'(t) = (-2t/(17-t^2)) i + (1/(2√(16+t))) j + (56kte^(-8tk)) k\)
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Define the variable?
Write the constraints ?
What is the Objective Equation?
Variable - These are the unknown quantities that expected to estimate it as an output.
Example:- In an optimization model for labor scheduling, the number of nurses to employ during the morning shift in an emergency room may be a Decision variable.
Constraints - the restrictions on the variable open linear programming problem are called constraints.
The conditions x ≥ 0, y ≥ 0 called non negative restrictions.
Objective equation - the objective equation should be specified in a quantitative way.
It is of the form Z = ax + by
where x and y are decision variable.
Z is to be maximized or minimized to find the solution.
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You are riding your bike and you slam on your brakes. What is the most likely acceleration that your bike undergoes?
2.0 mph/s
-3.0 mph/s
5.0 mph/s
0.0 mph/s
A traveler is walking on a moving walkway in an airport. The traveler must walk back on the walkway to get a bag he forgot. The traveler's ground speed is 1 ft/s against the walkway and 5ft/s with the walkway. What is the traveler's speed off the walkway? What is the speed of the moving walkway?
Oh my gosh I hate math, do you
Step-by-step explanation:
thus the speed off the walk way is 5 ft/s
the speed of the moving walkway is 3 ft/s
The midpoint of AB is M(-3,5). If the coordinates of A are (-4,6), what
are the coordinates of B?
Answer:
(-2,4)
Step-by-step explanation:
Hope this will help:)
Answer:
B (-2,4)
Step-by-step explanation:
PRETEST: The Number System
What is the fractional equivalent of the repeating decimal 0.2?
0339
off
O
O
6/N
27
5 of 13 QUESTIONS
SUBMIT
The fractional equivalent of the repeating decimal 0.2 is 2/9
How to determine the fractional equivalent of the repeating decimalFrom the question, we have the following parameters that can be used in our computation:
Repeating decimal = 0.2
Represent properly
So, we have
Repeating decimal = 0.2222
Express as fraction
So, we have
Fraction = 2/(10 - n)
In this case
n = 1
So, we have
Fraction = 2/(10 - 1)
Evaluate
Fraction = 2/9
Hence, the fractional equivalent is 2/9
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Please help‼️ domain and range‼️
The domain and the range of the function are (-∝, ∝) and (0, ∝), respectively
Calculating the domain and range of the graph?From the question, we have the following parameters that can be used in our computation:
The graph
The above graph is an exponential function
The rule of an function is that
The domain is the set of all real values
In this case, the domain is (-∝, ∝)
For the range, we have
Range = (0, ∝)
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if a dog can eat one thirds of a bag of food in 1/2 a week how many bags of food can the dog eat in one week
Answer:
Two thirds of a bag.
Step-by-step explanation:
1/2 * 2 = 1
1/3 * 2 = 2/3
Hope this helped!
The equation of the line in slope-intercept form
Answer:
slope is 4 over 7
Step-by-step explanation:
.......
Ben is starting a business to wash his neighbors cars. He will earn $9.50 per car he washes, plus an additional $50 his mom gave him as a bonus. If 'y' represents total profit, and 'x' represents the cars he washes, what equation can model Ben's profit per car he washes?
A. y = 50x + 9.50
B. y = 9.50x + 50
C. y = 59.50
D. y=9.50% - 50
Answer:
its b
Step-by-step explanation:
y being the total equals 9.50 times x beacause is how many cars he washed and the plus 50 is the money his mom gave him
Answer:
b
Step-by-step explanation:
PLEASE HELP THIS IS MY LAST TEST QUESTION!!!14x^5y^4+21x^3y^2/7x^3y
Answer: =2x²y³+3y.
Step-by-step explanation:
\(\frac{14x^5y^4+21x^3y^2}{7x^3y} =\frac{7x^3y*(2x^2y^3+3y)}{7x^3y}= 2x^2y^3+3y.\)
2 3/2 as a improper fraction
Answer:
Step-by-step explanation:
2 × 2 = 4
4 + 3 = 7
denominator stays the same so 7/2 is the answer
When slave starting a disabled vehicle, which of the following is an important safety consideration?
a. Ensure the battery caps are removed from bothvehicles batteries during the save start
b. Connecting the slave cable to the disables vehicle fisrt may cause damage to the batteries
c. The slaving vehicle engine must be running while connecting the slave cable
When slave starting a disabled vehicle, the term that serves an important safety consideration is c. The slaving vehicle engine must be running while connecting the slave cable
What is slave starting a vehicle?The dead car is started while the live vehicle's engine is running by inserting a slave cable into the receptacle on each vehicle.
Vehicles with manual transmissions rely heavily on the clutch slave cylinder. When the pedal is depressed, the clutch is disengaged and the transmission is shifted thanks to the slave and clutch master cylinders.
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Kellie has 6/7 as many paper clips as Junjie. Minghua has 3 times as many paper clips as Kellie. Given that Minghua has 2552 more paper clips than Junjie. (a) how many paper clips do the 3 children have in total? (b) how many paper clips does Minghua have?
Answer: 6,192 paperclips, 3,826 paperclips
Step-by-step explanation:
a) To find the sum of all the children's paperclips, you must find each of them.
First, to start off, create some equations that represent this information:
k = j * \(\frac{6}{7}\)
m = 3k
m = j + 2552
Then, for starts you can use the equation m = 3k and plug in for the variables
m = 3k
(j+2552) = 3(j * 6/7)
j + 2552 = 3j + 2.57
2549.43 = 2j
j = 1274.715
j = 1274 (round down because you can't have a fraction of a paper clip)
Next, use j to solve the other equations
m = j + 2552
m = 1274 + 2552
m = 3826
k = j * 6/7
k = 1274 * 6/7
k = 1092
sum = k + j + m
sum = 1092 + 1274 + 3826
sum = 6,192 paperclips
b) We already know m, which is 3826.
3,826 paperclips
find the equation of the line that is purpendicular to y= -2/3x and contains the point (4,-8)
Answer:
y = 3/2x-14
Step-by-step explanation:
The given line is y=-2/3x. So, the slope of the given line is -2/3.
Now, we have to find the perpendicular line to y= -2/3x passing through the point (4,-8).
The product of two perpendicular lines is -1.
m1.m2 = -1.
-2/3.m2= -1
m2 = 3/2
Now, we need to find the equation of the line passing through the point (4,-8) with slope 3/2.
The equation of slope-point form is (y-y1) = m(x-x1)
y-(-8) = 3/2 (x-4)
y+8 = 3/2x -6
Now, we have to add 6 on both sides.
y + 8 + 6 = 3/2x - 6 + 6.
y + 14 = 3/2x
y = 3/2x - 14.
Patrick is excited to attend his son’s soccer game tomorrow
evening, but he also needs to ensure his daughter arrives at her
coding class on time. Patrick is debating whether taking the train
or his
Personal car would be the best option to manage both tasks efficiently. While the train is a reliable mode of transportation, it may have fixed schedules that might not align perfectly with Patrick's needs.
On the other hand, using his personal car provides more flexibility and allows him to tailor the departure time according to his daughter's coding class schedule.
If Patrick decides to take the train, he would need to check the train schedule to see if there are convenient departure and arrival times for both the soccer game and the coding class. This option would require planning and coordination to ensure he arrives at the game on time and can pick up his daughter afterward.
Using his personal car gives Patrick the freedom to leave at a time that accommodates both the soccer game and the coding class. He can drop off his daughter at her coding class, attend the soccer game, and then pick her up afterward without being restricted by train schedules.
Considering the circumstances, Patrick might find it more convenient to use his personal car to manage both tasks effectively and ensure he can attend his son's soccer game while also ensuring his daughter arrives at her coding class on time.
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Which algebraic expression would be used to denote a trisomic organism? a. 1n b. 3n c. 2n - 1 d. 2n + 1 e. 2n + 2.
The correct answer to the given question is d. 2n+1. The other options, such as 1n, 3n, 2n-1, and 2n+2, do not accurately represent the chromosome number of a trisomic organism.
A trisomic organism is one that has an extra copy of a chromosome in its genome. This means that it has three copies of a particular chromosome instead of the usual two, which can have significant implications for the organism's development and health.
In terms of algebraic notation, the chromosome number of a trisomic organism would be denoted as 2n+1, where "n" represents the normal diploid number of chromosomes for that organism. The "2n" represents the normal two sets of chromosomes, and the "+1" represents the extra chromosome.
Therefore, the correct answer to the given question is d. 2n+1. The other options, such as 1n, 3n, 2n-1, and 2n+2, do not accurately represent the chromosome number of a trisomic organism. It is important to note that trisomies can occur for any chromosome, not just the sex chromosomes, and can have varying effects depending on which chromosome is affected.
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How do you multiply polynomials step by step?
A polynomial is a mathematical expression consisting of variables, coefficients, and exponents, we can be multiply two polynomials step by step.
Distribute each term of the first polynomial to every term of the second polynomial.
Combine like terms by adding the coefficients of the terms that have the same variables raised to the same powers.
Simplify the result by arranging the terms in descending order of the exponent of the variable.
For example, let's say you want to multiply (2x + 3) and (x - 4):
(2x + 3) * (x - 4) = 2x * x - 2x * 4 + 3 * x - 3 * 4
Simplify the terms: 2x^2 - 8x + 3x - 12
Combine like terms: 2x^2 - 5x - 12
Therefore, the product of (2x + 3) and (x - 4) is 2x^2 - 5x - 12.
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4. The concentration of calcium in a water sample is 100mg/L. What is the concentration in (a) meq/L and (b) mg/L as CaCO, (6 marks). (Given: MW of Ca-40, 0-16, C-12)
The concentration of calcium in a water sample can be converted to meq/L and mg/L as CaCO3 by utilizing the molar mass of calcium and calcium carbonate.
Step 1: Calculate the moles of calcium present in the water sample.
Given:
Concentration of calcium, C_ca = 100 mg/L
Molar mass of calcium, M_ca = 40 g/mol
Convert mg to g:
Concentration of calcium, C_ca = 100 mg/L = 0.1 g/L
Calculate moles of calcium:
Moles of calcium = C_ca / M_ca
Step 2: Convert moles of calcium to meq.
Molar mass of calcium = 40 g/mol
Valence of calcium = 2 (since calcium forms Ca2+ ions)
Moles of calcium = Moles of calcium / Valence
Step 3: Convert meq/L to mg/L as CaCO3.
Molar mass of calcium carbonate (CaCO3) = 40 g/mol (for Ca) + 12 g/mol (for C) + 3 * 16 g/mol (for O) = 100 g/mol
Moles of calcium carbonate = Moles of calcium / Valence
Convert moles to mg:
Concentration of calcium carbonate = Moles of calcium carbonate * Molar mass of calcium carbonate
By following these steps and plugging in the appropriate values, you can calculate the concentration of calcium in meq/L and mg/L as CaCO3.
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The time taken to cook Wkg is given by the expression (48w + 23) minutes. Calculate the time it would take to cook 3kg of meat giving in hours and minutes
Work Shown:
48w+23
48*3+23
144+23
167
It takes 167 minutes to cook 3 kg of meat.
Convert this to hours+minutes format.
167 min = 120 min + 47 min
167 min = 120/60 hr + 47 min
167 min = 2 hr + 47 min
Help pls
The first few partial sums of a series consisting of only
positive terms are shown.
Answer:
The partial sums are increasing in value.
The series converges to the same value as what the partial sums approach.
The partial sums appear to approach 0.33.
The series might converge to One-third.
Step-by-step explanation:
Answer:
The partial sums are increasing in value.
The series converges to the same value as what the partial sums approach.
The partial sums appear to approach 0.33.
The series might converge to One-third.
Step-by-step explanation:
how should a firm record an impairment in the value of property, plant, or equipment?
A firm should record an impairment in the value of property, plant, or equipment by reducing the carrying amount of the asset and recognizing the impairment loss as an expense in the financial statements.
When the value of property, plant, or equipment is impaired, meaning its recoverable amount is lower than its carrying amount, a firm should recognize this impairment in its financial statements. The impairment is recorded by reducing the carrying amount of the asset to its recoverable amount, which is the higher of its fair value less costs to sell or its value in use. The difference between the carrying amount and the recoverable amount is recognized as an impairment loss and recorded as an expense in the income statement. This adjustment reflects the decrease in the value of the asset and allows the firm to accurately report its financial position and performance.
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Two sample t tests are designed to learn if there is support for a relationship between variables when:
Two sample t-tests are designed to learn if there is support for a relationship between variables when there are two independent groups and we want to compare their means.
Specifically, the two sample t-test is used to determine whether the means of two groups are significantly different from each other. The test is based on the assumption that the populations from which the samples are drawn are normally distributed, and that the variances of the two populations are equal.
If these assumptions are met, we can use the two sample t-test to test the null hypothesis that the means of the two groups are equal. The test produces a t-statistic and a p-value, which can be used to determine whether the null hypothesis should be rejected or not.
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Evaluate3(x-1+2)when x=5
Solve for x. Show your work.
1/2x - 1/4 = 3/5x + 2
\(x = - \frac{45}{2} \)
Step-by-step explanation:\( \frac{1}{2} x - \frac{1}{4} = \frac{3}{5} x + 2\)
\(20( \frac{1}{2} x - \frac{1}{4} ) = 20( \frac{3}{5} x + 2)\)
\(20 \times \frac{1}{2} x - 20 \times \frac{1}{4} = 20( \frac{3}{5} x + 2)\)
\(10x - 20 \times \frac{1}{4} = 20 \times \frac{3}{5} x + 20 \times 2\)
\(10x - 5 = 20 \times \frac{3}{5} x + 20 \times 2\)
\(10x - 5 = 4 \times 3x + 20 \times 2\)
\(10x - 5 = 4 \times 3x + 40\)
\(10x - 5 - 12x = 40\)
\(10x - 12x = 40 + 5\)
\( - 2x = 40 - 5\)
\( - 2x = 45\)
\(x = - \frac{45}{2} \)
tell me if your brain gets this, this should be easy for people who know exponents
what is (3x10) (with the power of 3)
3x1=3 add three 0's = 3000
when the decimal point of a certain positive decimal number is moved four places to the right, the new number is four times the reciprocal of the original number. what is the orignal number?
If the new number is four times the reciprocal of the original number, then the original number is 0.02.
Let us assume the original positive decimal number is = "x".
When we move the decimal point of x four places to the right,
We get, "10000x", which is four times the reciprocal of x.
So, equation can be written as;
⇒ 10000x = 4(1/x),
On simplifying the equation,
We get,
⇒ 10000x² = 4,
Dividing both sides by 10000,
We get,
⇒ x² = 0.0004,
Simplifying further,
We get,
⇒ x = 0.02
Therefore, the original positive decimal number is 0.02.
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Mrs. Coulter has 3 / 5 yard of ribbon to tie on balloons for the festival. Each balloon will need 3 / 10 yard of ribbon. How many balloons can Mrs. Coulter tie with ribbon
Answer:
I know they are not the same name but they have the same question they are the same answerStep-by-step explanation:
#hope it helps you #happy learningLet us suppose the following profit function for this industry: π(p,w
1
,w
2
)=
8(w
1
+w
2
)
1/2
p
2
where p is the market price of its output, while w
1
and w
2
are the prices of the inputs. Assume further that the firms are identical and that each firm faces the same market prices for both its output as well as inputs. a) Explain whether the firm is operating in the short run or long run and further determine the supply function for each firm. b) Derive the firm's input demand functions, determine their degree of homogeneity as well as the impact of a change in the input prices. c) Derive the market supply function given that there are 40 firms operating in this, market. d) If the market price of output (p) is 5 , the market price of the input (w
1
) is 1 , that of (w
2
) is also 1 and the demand function is given by q=1500/p(p+1). Determine the total market supply.
(a) The firm is operating in the long run, and its supply function is determined by the profit maximization condition.
(b) The firm's input demand functions can be derived from the profit function, and their degree of homogeneity is 1/2. Changes in input prices will impact the firm's input demand.
(c) The market supply function can be derived by aggregating the supply functions of all 40 firms operating in the market.
(d) Given the market conditions and demand function, the total market supply can be calculated.
(a) The firm is operating in the long run because it has the flexibility to adjust its inputs and make decisions based on market conditions. The firm's supply function is determined by maximizing its profit, which is achieved by setting the marginal cost equal to the market price. In this case, the supply function for each firm can be derived by taking the derivative of the profit function with respect to the price of output (p).
(b) The input demand functions for the firm can be derived by maximizing the profit function with respect to each input price. The degree of homogeneity of the input demand functions can be determined by examining the exponents of the input prices. In this case, the degree of homogeneity is 1/2. Changes in the input prices will affect the firm's input demand as it adjusts its input quantities to maximize profit.
(c) The market supply function can be derived by aggregating the individual supply functions of all firms in the market. Since there are 40 identical firms, the market supply function can be obtained by multiplying the supply function of a single firm by the total number of firms (40).
(d) To determine the total market supply, we substitute the given market conditions and demand function into the market supply function. By solving for the market quantity at a given market price, we can calculate the total market supply.
In conclusion, the firm is operating in the long run, and its supply function is determined by profit maximization. The input demand functions have a degree of homogeneity of 1/2, and changes in input prices impact the firm's input demand. The market supply function is derived by aggregating the individual firm supply functions, and the total market supply can be calculated using the given market conditions and demand function.
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Estimate the area of the figure. Each square represents 2 units^2.
Answer:
60 units²Step-by-step explanation:
Approximate area is about 50 units²
The closest option is the last one
PLEASE HELP!!!! The difference between the product of 12 and 8 and the sum Of 54 and 11
Answer:I have no clue
Step-by-step explanation:
So basically I have no clue