If population of mussels in logistic growth went from 600 to 670 in a year, and the carrying capacity was 700, the r max for the mussel population is approximately 0.023.
Logistic growth is a type of population growth that follows a logistic function. The logistic function is characterized by a sigmoidal-shaped curve that starts with exponential growth and then levels off as the population approaches its carrying capacity.
In this problem, we are given that a population of mussels went from 600 to 670 in a year, and the carrying capacity is 700. We can use this information to find the r max for the mussel population using the logistic growth equation:
dN/dt = r max N [(K-N)/K]
where dN/dt is the rate of change of the population over time, r max is the maximum per capita growth rate, N is the population size, and K is the carrying capacity.
First, we can calculate the initial population growth rate:
r₀ = (670-600)/600 = 0.1167
Next, we can use this value and the carrying capacity to solve for r max :
r max = 4r₀(1 - r₀/K)
Substituting the values, we get:
r max = 40.1167(1 - 0.1167/700) ≈ 0.023
In conclusion, we can find the r max for a population undergoing logistic growth by using the logistic growth equation and the given values of the population size and carrying capacity.
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when you calculate the number of combinations of r objects taken from a group of n objects what are you counting? give an example.
Answer:
Below
Step-by-step explanation:
You are counting the number of SUBSETS
Example set {2,7}
has subsets { } {2} {7} {2,7}
The number of subsets given a set of 'n' is 2^n
When you calculate the number of combinations of "r" objects taken from a group of "n" objects, you are counting the number of different ways you can choose "r" items from the "n" items without regard to their order (i.e. their arrangement does not matter).
What is combination?A combination in mathematics is a selection of elements from a set with distinct members, where the order of selection is irrelevant. A combination is a method of picking elements from a collection when the order of selection is irrelevant. Assume we have three integers P, Q, and R. Combination defines how many possibilities we may choose two numbers from each set. A combination is a mathematical approach for determining the number of potential arrangements in a set of objects when the order of the selection is irrelevant. You can choose the components in any order in combinations. For example, if you have a group of 6 books and you want to know how many different combinations of 3 books you can choose, you would use the formula: C(6,3) = 6!/(3! * (6-3)!). The answer would be 20, meaning there are 20 different combinations of 3 books you can choose from the group of 6.
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An article describes an experiment in which nine steel specimens were submerged in seawater at various temperatures and the corrosion rates were measured. The results are presented in the following table.
Temperature (°C)
Corrosion (mm/yr)
26.6
1.58
26
1.45
27.4
1.13
21.7
0.96
14.9
0.99
11.3
1.05
15
0.82
8.7
0.68
8.2
0.49
a)Compute the least-squares line for predicting corrosion from temperature. Round the answers to four decimal places.
y = + x
b)Two steel specimens whose temperatures differ by 10°C are submerged in seawater. By how much would you predict their corrosion rates to differ? Round the answer to three decimal places.
mm/yr
c) Predict the corrosion rate for steel submerged in seawater at a temperature of 20°C. Round the answer to three decimal places.
mm/yr
d)Compute the fitted values.
a) The least-squares line is y = 0.0426x + 0.3426. b) The predicted difference is 0.426 mm/yr. c) The predicted corrosion rate is 1.223 mm/yr. d) The fitted values are 1.4641, 1.4286, 1.4962, 1.2214, 0.959, 0.8124, 0.8736, 0.663, 0.6426.
To compute the least-squares line for predicting corrosion from temperature, we need to find the equation of the line in the form y = mx + b, where y represents the corrosion rate and x represents the temperature.
First, let's calculate the means of temperature (x) and corrosion (y):
X = (26.6 + 26 + 27.4 + 21.7 + 14.9 + 11.3 + 15 + 8.7 + 8.2) / 9 = 17.1 (rounded to one decimal place)
Y = (1.58 + 1.45 + 1.13 + 0.96 + 0.99 + 1.05 + 0.82 + 0.68 + 0.49) / 9 = 1.057 (rounded to three decimal places)
Next, let's calculate the sums of squares:
SSxx = Σ\((x_{i}-X )^{2}\) = \((26.6-17.2)^{2}\) + \((26-17.2)^{2}\) + ... + \((8.2-17.2)^{2}\)
= 61.45 + 58.41 + ... + 77.01 = 676.71 (rounded to two decimal places)
SSxy = Σ(\(x_{i}\) - X)(\(y_{i}\) - Y) = (26.6 - 17.1)(1.58 - 1.057) + (26 - 17.1)(1.45 - 1.057) + ... + (8.2 - 17.1)(0.49 - 1.057)
= 11.01 + 8.91 + ... - 8.52 = 28.85 (rounded to two decimal places)
Now, let's calculate the slope (m) and y-intercept (b) of the least-squares line:
m = SSxy / SSxx = 28.85 / 676.71 = 0.0426 (rounded to four decimal places)
b = Y - m * X = 1.057 - 0.0426 * 17.1 = 0.3426 (rounded to four decimal places)
Therefore, the least-squares line for predicting corrosion from temperature is:
y = 0.0426x + 0.3426
b) To predict the difference in corrosion rates for two steel specimens whose temperatures differ by 10°C, we can use the slope (m) from the least-squares line.
Δy = m * Δx = 0.0426 * 10 = 0.426 (rounded to three decimal places)
Therefore, the predicted difference in corrosion rates is 0.426 mm/yr.
c) To predict the corrosion rate for steel submerged in seawater at a temperature of 20°C, we can substitute x = 20 into the equation of the least-squares line.
y = 0.0426 * 20 + 0.3426 = 1.2226 (rounded to three decimal places)
Therefore, the predicted corrosion rate is 1.223 mm/yr.
d) To compute the fitted values, we substitute each temperature value into the equation of the least-squares line to obtain the corresponding predicted corrosion rate.
Fitted value for 26.6°C: y = 0.0426 * 26.6 + 0.3426 = 1.4641
Fitted value for 26°C: y = 0.0426 * 26 + 0.3426 = 1.4286
Fitted value for 27.4°C: y = 0.0426 * 27.4 + 0.3426 = 1.4962
Fitted value for 21.7°C: y = 0.0426 * 21.7 + 0.3426 = 1.2214
Fitted value for 14.9°C: y = 0.0426 * 14.9 + 0.3426 = 0.959
Fitted value for 11.3°C: y = 0.0426 * 11.3 + 0.3426 = 0.8124
Fitted value for 15°C: y = 0.0426 * 15 + 0.3426 = 0.8736
Fitted value for 8.7°C: y = 0.0426 * 8.7 + 0.3426 = 0.663
Fitted value for 8.2°C: y = 0.0426 * 8.2 + 0.3426 = 0.6426
Therefore, the fitted values are:
1.4641, 1.4286, 1.4962, 1.2214, 0.959, 0.8124, 0.8736, 0.663, 0.6426
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5 14/15 number line rounded to the whole or half
Answer:
It's rounded to the whole, which is 6.
Step-by-step explanation:
In which number is the digit 8 ten times larger that it is in the number 18
The number where the digit 8 ten times larger that it is in the number 18 is B. 387.
What is place value?Place value simply means the position of a number based on how it's written.
It's important that 8 in 18 is 8 units.
Also, it's important to note that 8 in 387 is 8 tens. This is 80.
Therefore, 8 × 10 = 80. This justifies the information. In conclusion, the correct option is B.
The complete information is written below.
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In which number is the digit 8 ten times larger that it is in the number 18?
A. 108
B. 387
C. 801
D. 1840
E. 8205
A quality control program is being developed for computer hard-drivers, The mean fraction defective in the samples in the past has been 3%. If there are 5 random samples, and a constant sample size of 120 is taken for each random sample, what would the upper control limit using 3σ for P-chart be? Select one: a. 0.0768 b. 0.0611 c. 0.0156 d. 0.0842 e. 0.0468
The upper control limit using 3σ for P-chart is approximately 0.0768.
A quality control program is being developed for computer hard-drivers, and we are to determine the upper control limit using 3σ for P-chart.
We are given that the mean fraction defective in the samples in the past has been 3%. We also know that there are 5 random samples, and a constant sample size of 120 is taken for each random sample.*
The upper control limit (UCL) for a P-chart is given by:UCL = p + 3σpwhere p is the estimated proportion defective and σp is the standard deviation of the proportion defective.
We can estimate p as the mean of the past proportion defective, which is 0.03. The variance of the proportion defective is given by:
σp² = p(1 - p)/nwhere n is the sample size.
Since the sample size is constant and equal to 120 for each of the 5 random samples, we have:
σp² = 0.03(1 - 0.03)/120 = 0.0002245σp = √0.0002245 = 0.014993
Using the formula for the UCL, we have:
UCL = 0.03 + 3(0.014993)≈ 0.0768
Therefore, the upper control limit using 3σ for P-chart is approximately 0.0768.Option (a) is correct.
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If a pyramid with a square base has a volume of 600 cubic feet and the base area is 40 square feet, what is the height of the pyramid?
The height of the pyramid is 45 feet.
Using the formula
v= volumn
a= base area
h=height
V=A x h/3
Solving for h
h=3V
A=3X600/40=45ft
To find height, First, square the base area to find the bottom area. Then, divide the known extent by way of the bottom location. finally, multiply the obtained quotient with the height of three to get the pyramid height.
The peak of a rectangular-primarily based pyramid the usage of your expertise of algebra. H = V / (L x W) / three
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For all nonzero real numbers p,t,x, and y such that (x)/(y)=(3p)/(2t) which of the following expressions is equivalent to t ?
The expression equivalent to t is:t = (3p * y)/(2x)
To find the expression equivalent to t, we can manipulate the given equation:
(x)/(y) = (3p)/(2t)
Cross-multiplying, we get:
2t * (x) = (3p) * (y)
Dividing both sides by 2(x), we have:
t = (3p * y)/(2x)
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answer for branniest
Answer: Hard to say... Your image is a black Screen.
Answer:
what am i anwsering
Step-by-step explanation:
The expression ( 8 x 1 ) + ( 9 x 1 / 100 ) + ( 5 x 1 / 1000 ) write a decimal form and word form for this expression.
The decimal form of the expression is 8.095, and the word form is "eight plus nine hundredths plus five thousandths."
The expression (8 x 1) + (9 x 1/100) + (5 x 1/1000) can be simplified as follows:
(8 x 1) + (9 x 1/100) + (5 x 1/1000) = 8 + 0.09 + 0.005
In decimal form, the expression evaluates to 8 + 0.09 + 0.005 = 8.095.
In word form,in the given the expression can be expressed as "eight plus nine hundredths plus five thousandths." This reflects the numerical values of each term in the expression.
Therefore, the decimal form of the expression is 8.095, and the word form is "eight plus nine hundredths plus five thousandths."
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the angle lf elevation between fishing vessel and the top of a 50 meter tall light house is 12 degrees. what is the approximate distance between the fishing vessel and the base of the light house
For diagram and better understanding refer to the attachment.
Here
AB is the height of lighthouse=50mDistance from base of lighthouse and fishing vessel is BCNow
As per we know
\(\\ \sf\longmapsto tanC=\dfrac{Perpendicular}{Base}\)
<C=12°\(\\ \sf\longmapsto tan12=\dfrac{AB}{BC}\)
\(\\ \sf\longmapsto BC=\dfrac{AB}{tan12}\)
\(\\ \sf\longmapsto BC=\dfrac{50}{0.2125565616700}\)
\(\\ \sf\longmapsto BC\approx 235m\)
Answer:
Distance is approximately 240 meters
Step-by-step explanation:
» From trigonometric ratios of tan:
\({ \tt{ \red{ \sin( \theta) = \frac{opposite}{hypotenuse} }}} \\ \)
→ Opposite is height, 50 metres
→ Hypotenuse is d
\({ \tt{ \sin(12 \degree) = \frac{50}{d} }} \\ \\ { \tt{d = \frac{50}{ \sin(12 \degree) } }} \\ \\ { \boxed{ \tt{ \: d = 240.458 \approx240 \: m}}}\)
Make g the subject of the formula w=7- square root g
The value of g is g = w² - 14w + 49, according to the question.
What do you mean by formula?
A truth or a rule expressed using mathematical symbols is the formula. An equal sign is typically used to connect two or more values. When you are aware of the value of one quantity, you can use the formula to determine the value of the other. It facilitates speedy question resolution. Formulas are used in algebra, geometry, and other subjects to speed up and simplify the process of arriving at the result.
According to the given question,
We have :
w = 7 - √g
Firstly isolate the g,
w = 7 - √g
Do the opposite of PEMDAS, first subtract 7 from both sides,,
w (-7) = -√g + 7 (-7)
w - 7 = -√g
Now, multiply -1 (as -√g is the same as -1√g) to both sides
-1(w - 7) = √g
-1w + 7 = √g
To get rid of the square root, you must square both sides,
Note: -1w is the same as -w.
Note: you are squaring all the terms on the other side, not just one.
(-w + 7)² = (√g)²
g = (-w + 7)²
g = (-w + 7)(-w + 7) (note, this can be the answer your teacher wants, or g = (-w + 7)² )
Use the FOIL method (First, Outside, Inside, Last)
(-w)(-w) = w²
(-w)(7) = -7w
(7)(-w) = -7w
(7)(7) = 49
g = w² - 7w - 7w + 49
Then, simplify (combine all like terms):
g =w² - 7w - 7w + 49
g = w² - 14w + 49
Therefore, the value of g = w² - 14w + 49 .
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(1 point) Let f(x) = -24 - 3x3 + 3x + 6. Find the open intervals on which f is concave up (down). Then determine the x-coordinates of all inflection points of f. 1. f is concave up on the intervals 2.
The open intervals on which f(x) is concave up are (-1/√6, 1/√6) and the open intervals on which f(x) is concave down are (-∞, -1/√6) and (1/√6, ∞). The x-coordinates of the inflection points are x = ±1/√6.
To determine where f(x) is concave up or down, we need to find the
second derivative of f(x) and examine its sign. The second derivative of
f(x) is:
\(f''(x) = -18x^2 + 3\)
To find the intervals where f(x) is concave up, we need to solve the
inequality:
f''(x) > 0
\(-18x^2 + 3 > 0\)
Solving this inequality, we get:
\(x^2 < 1/6\)
-1/√6 < x < 1/√6
Therefore, f(x) is concave up on the interval (-1/√6, 1/√6).
To find the intervals where f(x) is concave down, we need to solve the inequality:
f''(x) < 0
\(-18x^2 + 3 < 0\)
Solving this inequality, we get:
\(x^2 > 1/6\)
x < -1/√6 or x > 1/√6
Therefore, f(x) is concave down on the intervals (-∞, -1/√6) and (1/√6, ∞).
To find the inflection points, we need to find the x-coordinates where the
concavity changes, i.e., where f''(x) = 0 or is undefined.
From \(f''(x) = -18x^2 + 3\), we see that f''(x) is undefined at x = 0. At x = ±1/
√6, f''(x) changes sign from positive to negative or vice versa, so these
are the inflection points.
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State if there appears to be a positive correlation, negative correlation, or no correlation. When there is a correlation, identify the relationship as linear or nonlinear.
Answer:
Negative Correlation:
Linear relationship
Explanation:
We can draw the line of best fit through the points given, and this indicates that the relationship is linear. Furthermore, the line of best fit has a negative slope (which tells us that if one variable increases, the other decreases); therefore, the data set has a negative correlation
Please help me please
The value of all the missing angles is in the measure of m∠1 = 88°, m∠2 = 42°, and m∠3 = 113°.
We know that,
Sum of all angles of triangle = 180°.
Therefore, m∠3 + 42° + 25° = 180°.
m∠3 = 180° - 67°
m∠3 = 113°
Vertical angles: Vertical angles are the angles that are opposite to each other when two lines cross.
We know that,
Vertical or opposite angles have equal measures.
So, 42° and m∠2 are vertical or opposite angles.
Therefore, the value of m∠2 = 42°.
Similarly, for m∠3, We know that,
Sum of all angles of triangle = 180°.
∴ ∠1 + ∠2 + 50° = 180°.
=> ∠1 + 42° + 50° = 180°
=> m∠1 = 88°.
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The PTA makes a $5.00 profit on each school sweatshirt they sell. If they made a
profit of $2,170.00, how many sweatshirts did they sell?
Answer:
434 sweatshirts were sold
Step-by-step explanation:
$2,170/$5 = 434
PLEASE HELP I'M SO CLOSE TO BEING DONE
Answer:
see explanation
Step-by-step explanation:
the perimeter (P) is the sum of the 3 sides of the triangle.
P = 4x² + 1 + 26x + 6 + x² + 10x ← collect like terms
= 5x² + 36x + 7
to factor the expression, consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term.
product = 5 × 7 = 35 and sum = 36
the factors are + 35 and + 1
use these factors to split the x- term
5x² + 35x + 1x + 7 ( factor the first/second and third/fourth terms )
= 5x(x + 7) + 1 (x + 7) ← factor out (x + 7) from each term
= (x + 7)(5x + 1) , then
P = (x + 7)(5x + 1) ← in factored form
Your cookie recipe calls for 3/4 cup of flour. You want to make 3 batches of cookies. Which diagram shows how much flour you need?
Answer: The correct answer is the second one
Step-by-step explanation:
Tekan-Tekan Sdn. Bhd. has order for 200 Model AS-120 calculator for delivery on day 200. The calculator consists of three parts. Components 2 and 3 form subassembly 1 . Sub-assembly 1 and component 4 form the final assembly. Following are the work centers and times of each operation. Table Q3(a) shows routine file of the operation. Assuming: - Only one machine is assigned to each operation - The factory works on 8-hour shift, 5 days a week - All parts move in one lot of 200. (a) Illustrate the backward schedule based on the information given above. (12 marks) (b) Identify when component 3 must be started to meet the delivery date. (2 marks)
Component 3 must be started on day 197 to meet the delivery date of day 200.
To illustrate the backward schedule, we need to start from the delivery date (day 200) and work our way backward, taking into account the lead times and dependencies of each operation.
(a) Backward schedule:
Operation | Work Center | Time (hours) | Start Day
--------------------------------------------------------
Final Assembly | Work Center 1 | 1 | 200
Sub-assembly 1 | Work Center 2 | 2 | 199
Component 4 | Work Center 3 | 3 | 197
Component 2 | Work Center 4 | 4 | 196
Component 3 | Work Center 5 | 3 | ????
(b) To identify when component 3 must be started to meet the delivery date, we need to consider its dependencies and lead times.
From the backward schedule, we see that component 3 is required for sub-assembly 1, which is scheduled to start on day 199. The time required for sub-assembly 1 is 2 hours, which means it should be completed by the end of day 199.
Since component 3 is needed for sub-assembly 1, we can conclude that component 3 must be started at least 2 hours before the start of sub-assembly 1. Therefore, component 3 should be started on day 199 - 2 = 197 to ensure it is completed and ready for sub-assembly 1.
Hence, component 3 must be started on day 197 to meet the delivery date of day 200.
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Suppose we have an biased quarter that has a 0.3 probability of landing on heads. Suppose we flip the quarter independently 50 times and let A be the number of heads we observe. Apply Chebyshev's inequality to upper bound the probability P[A ≥30] and apply Markov's inequality to upper bound the probability P[A≥30]
Applying Chebyshev's inequality, we find that P[A ≥ 30] is upper bounded by approximately 0.122, and applying Markov's inequality, we find that P[A ≥ 30] is upper bounded by 0.5.
To apply Chebyshev's inequality and Markov's inequality to upper bound the probability P[A ≥ 30], where A is the number of heads obtained when flipping a biased quarter 50 times, we need to know the mean and variance of A.
The mean (μ) of A can be calculated as the product of the number of trials (n) and the probability of success (p). In this case, n = 50 (number of flips) and p = 0.3 (probability of heads):
μ = np = 50 * 0.3 = 15
The variance (σ^2) of A can be calculated as the product of the number of trials (n), the probability of success (p), and the probability of failure (q = 1 - p):
σ^2 = npq = 50 * 0.3 * (1 - 0.3) = 10.5
Now we can apply Chebyshev's inequality and Markov's inequality to bound the probability P[A ≥ 30]:
Chebyshev's Inequality:
For any positive value k, the probability that a random variable X deviates from its mean μ by at least k standard deviations is given by:
P(|X - μ| ≥ kσ) ≤ 1/k^2
In our case, we want to find the upper bound for P[A ≥ 30]. Using Chebyshev's inequality, we can set k = (|30 - μ|)/σ and find an upper bound for the probability:
k = (|30 - 15|) / sqrt(10.5) ≈ 2.89
Therefore, according to Chebyshev's inequality:
P[A ≥ 30] ≤ 1/2.89^2 ≈ 0.122
Markov's Inequality:
Markov's inequality provides an upper bound on the probability of a random variable exceeding a specific value by a positive factor:
P(X ≥ a) ≤ E(X) / a
In our case, we want to find the upper bound for P[A ≥ 30]. Using Markov's inequality, we have:
P[A ≥ 30] ≤ E(A) / 30
Since E(A) = μ = 15:
P[A ≥ 30] ≤ 15 / 30 = 0.5
Therefore, according to Markov's inequality:
P[A ≥ 30] ≤ 0.5
In summary, these inequalities provide bounds on the probability of obtaining at least 30 heads when flipping the biased quarter 50 times.
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Which expressions are equivalent to 2r + (t + r)2r+(t+r)2, r, plus, left parenthesis, t, plus, r, right parenthesis ?
Choose all answers that apply:
Choose all answers that apply:
(Choice A)
A
2rt + 4r
(Choice B)
B
r+tr
(Choice C)
C
None of the above
9514 1404 393
Answer:
C none of the above
Step-by-step explanation:
We can simply drop the parentheses and collect terms.
2r +(t +r) = 2r + t + r = (2r +r) +t
= 3r +t
Complete the square to re-write the quadratic function in vertex form.
y=x²+7x+3
Answer:
To complete the square and rewrite the quadratic function y = x² + 7x + 3 in vertex form, we follow these steps:
Factor out the coefficient of x² from the first two terms:
y = 1(x² + 7x) + 3
Take half of the coefficient of x (which is 7 in this case) and square it. Add this value inside the parentheses, and subtract the same value multiplied by the coefficient of x² (which is 1) outside the parentheses to maintain the same value of the expression:
y = 1(x² + 7x + (7/2)² - (7/2)²) + 3
Simplify inside the parentheses by combining the first three terms using the square of the binomial formula (a + b)² = a² + 2ab + b²:
y = 1(x + 7/2)² - 1/4 + 3
Combine the constant terms to simplify:
y = 1(x + 7/2)² + 11/4
Therefore, the quadratic function y = x² + 7x + 3 can be written in vertex form as y = (x + 7/2)² + 11/4. The vertex is located at the point (-7/2, 11/4).
Hope This Helps!
the engine in a jet has a power curve approximated by where is the rpm and is the horsepower generated. at what rpm is the engine putting out maximum horsepower?. round your answer to three decimal places. rpm what is the maximum horsepower? round your answer to three decimal places.
The Rpm is 9000 and maximum Horsepower cannot be determined Finding the maximum of the function will help us determine the RPM at which the engine is producing the most horsepower.
To do it, we must calculate its derivative and set it to zero:
d(HP)/d(RPM) = 0.5 × (9000 - RPM)\(x^{-0.5}\)
When we solve for RPM by setting this equal to zero, we obtain:
0 = 0.5 × (9000 - RPM)\(x^{-0.5}\)
(9000 - RPM)\(x^{0.5}\) = 0
9000 - RPM = 0
RPM = 9000
So, at 9000 RPM, the most horsepower is produced. At this RPM, we only evaluate the function to determine the maximum horsepower:
HP = 0.5 × (9000 - RPM)\(x^{-0.5}\) × RPM\(x^{2}\)
HP = 0.5 × (9000 - RPM)\(x^{-0.5}\) × RPM\(x^{2}\) × 9000\(x^{2}\)
HP = 0.5 × (0)\(x^{-0.5}\) × 9000\(x^{2}\)
HP = 0.5 × infinity × 9000\(x^{2}\)
However, since infinity is not a mathematical concept, computations cannot use it. It indicates that as RPM near 9000, the engine's power output increases significantly, but the engine's maximum horsepower cannot be precisely measured.
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just the linked questions, thanks . 8.4 similar triangles unit 8 practice a
The evaluation of the segment formed by the parallel lines using Thales Theorem also known as the triangle proportionality theorem are;
8. \(\overline {ST}\) is parallel to \(\overline{PR}\)
9. \(\overline{ST}\) is parallel to \(\overline{PR}\)
10. \(\overline{ST}\) is not parallel to \(\overline{PR}\)
11. x = 57.6
12. x = 25.8
13. x = 11
14. x = 10
15. x = 5
16. x = 17
What is Thales theorem?Thales Theorem also known as the triangle proportionality theorem states that a parallel line to a side of a triangle that intersects the other two sides of the triangle, divides the two sides in the same proportion.
8. The ratio of the sides the segment \(\overline{ST}\) divides the sides QR and QP of the triangle ΔPQR into are; 7/11.2 = 10/16 = 0.625
Therefore; according to the Thales theorem, \(\overline{ST}\) ║ \(\overline{PR}\)
9. The ratio of the sides the parallel side to the base divides the other two sides are;
33/41.8 = 15/19
45/(102 - 45) = 45/57 = 15/19
Therefore, \(\overline{ST}\) and \(\overline{PR}\) bisects \(\overline{QP}\) and \(\overline{QR}\) into equal proportions and therefore, \(\overline{ST}\) ║ \(\overline{PR}\)
10. The ratio of the sides the segment \(\overline{ST}\) bisects the other two sides are;
24/57 and 19/38
24/57 ≠ 19/38, therefore \(\overline{ST}\) ∦ \(\overline{PR}\)
Second part; To solve for x
11. x/30 = 48/25
x = (48/25) × 30 = 57.6
x = 57.6
12. x/34.4 = (49 - 28)/28
x = 34.4 × (49 - 28)/28 = 25.8
x = 25.8
13. (2·x + 6)/52.5 = 32/60
(2·x + 6) = 52.5 × (32/60)
x = (52.5 × (32/60)) - 6)/2 = 11
x = 11
14. (x - 3)/21 = (x - 1)/27
27·x - 27 × 3 = 21·x - 21
27·x - 81 = 21·x - 21
6·x = 60
x = 60 ÷ 6 = 10
x = 10
15. (35 - 20)/20 = (4·x - 2)/(7·x - 11)
15/20 = (4·x - 2)/(7·x - 11)
15 × (7·x - 11) = 20 × (4·x - 2)
105·x - 165 = 80·x - 40
105·x - 80·x = 165 - 40 = 125
25·x = 125
x = 125/25 = 5
x = 5
16. (x - 3)/35 = 4/(x - 7)
(x - 3) × (x - 7) = 35 × 4 = 140
x² - 10·x + 21 = 140
x² - 10·x - 119 = 0
(x - 17) × (x + 7) = 0
x = 17 or x = -7
Therefore, the possible value of x is 17
x = 17
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Evaluate the surface integral. S[v?z? ds, S is the part of the cone v = V8? + 2? given by o sys2
The surface integral S[vz ds over the surface S is equal to 8π/7. The surface integral represents the flux of the vector field vz across the surface S.
To evaluate the surface integral, we need to parameterize the surface S in terms of two variables, typically denoted by u and v. In this case, we can use the cylindrical coordinates (v, θ, z) to parameterize the surface. Using the equation v = √(8z + 2), we can rewrite it in terms of v as v = √(8v^2 + 2), which simplifies to 8v^2 = v^2 - 2. Solving for v, we get v = ±√(2/7). Since we are dealing with a cone, we consider the positive root, so v = √(2/7). Next, we determine the limits for θ and z. Given that 0 ≤ θ ≤ 2π, the limits for θ remain the same. For z, we have 0 ≤ z ≤ 2 as stated in the problem. The differential area element ds in cylindrical coordinates is given by ds = r dv dθ, where r represents the radius. In this case, r = v. Now, we can set up the surface integral as ∫∫S vz ds = ∫∫S v^2 r dv dθ. Substituting the values of v, θ, and the limits, the integral becomes ∫[0,2π]∫[0,2] (√(2/7))^2 v dv dθ.
Simplifying the integrand, we have ∫[0,2π]∫[0,2] (2/7) v dv dθ.
Evaluating the inner integral with respect to v, we get ∫[0,2π] [(1/7)v^2] |[0,2] dθ = ∫[0,2π] (4/7) dθ. Finally, evaluating the outer integral with respect to θ, we have (4/7)θ |[0,2π] = (4/7)(2π - 0) = 8π/7.
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A student needs 15 minutes to solve an algebra problem how many minutes dose this student need to slove 5 problems?
Answer:
75 minutes or 1 hour and 15 minutes
Step-by-step explanation:
15·5=75
Answer:
3 min's per question
Step-by-step explanation:
Write the number in 2 equivalent forms as a fraction, decimal, or percent.
0.96
What is the equivalent fraction?
Answer:
96% percent and fraction is 24/25
Answer: Down below
Step-by-step explanation:
64 % = 16 / 25
21 / 50 = 0. 42
9 / 25 = 36 %
2 / 5 = 40 %
/ = divide okay
A rock that has been significantly reshaped on multiple surfaces by windborne particles and sometimes has a sharp edge is a(n) ________.
A rock that has been significantly reshaped on multiple surfaces by windborne particles and sometimes has a sharp edge is a(n) ventifact:
What is a rock?A rock refers to the solid portion of the earth crust which contains minerals. There are three types of rocks; The sedimentary rock: They are formed from dead plants, dead animals, sand etc.
The metamorphic rock: They are formed from previously existing rocks. The igneous rock: They are formed from the solidification of the molten magma.
Hence, ventifact are rock that has been significantly reshaped on multiple surfaces by windborne particles and sometimes has a sharp edge.
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If
x = ab/c
derive the formula for the uncertainty of x. (Hint: partial derivatives may prove useful).
The formula for the uncertainty of x, Δx, can be derived using partial derivatives as follows:
Δx = √((Δa/a)² + (Δb/b)² + (Δc/c)²)
To derive the formula for the uncertainty of x, Δx, we can use the concept of partial derivatives. The general formula for the uncertainty propagation of a function involving multiple variables is given by:
Δf = √((∂f/∂x₁)²Δx₁² + (∂f/∂x₂)²Δx₂² + ... + (∂f/∂xₙ)²Δxₙ²)
In this case, we have x = ab/c, and we want to find Δx. We can assign x as a function of a, b, and c:
f(a, b, c) = x = ab/c
To find Δx, we need to calculate the partial derivatives (∂f/∂a), (∂f/∂b), and (∂f/∂c) and substitute them into the general formula.
∂f/∂a = b/c
∂f/∂b = a/c
∂f/∂c = -ab/c²
Now, we can substitute these partial derivatives into the uncertainty propagation formula:
Δx = √((∂f/∂a)²Δa² + (∂f/∂b)²Δb² + (∂f/∂c)²Δc²)
= √((b/c)²Δa² + (a/c)²Δb² + (-ab/c²)²Δc²)
= √((b²Δa² + a²Δb² + a²b²Δc²)/c²)
= √((a²b²Δc² + b²Δa² + a²Δb²)/c²)
Simplifying further, we get:
Δx = √(a²b²Δc² + b²Δa² + a²Δb²)/c
Thus, the formula for the uncertainty of x, Δx, is:
Δx = √(a²b²Δc² + b²Δa² + a²Δb²)/c
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Alberto started out bench pressing 60 pounds. He then added 5 pounds every week. Determine whether the situation is linear or nonlinear, and proportional or nonproportional
Answer
linear
nonproportional
Step-by-step explanation:
Since for each equal change in time (1 week), there is an equal change in weight (5 lb), the situation is linear.
At time zero, the first week, the weight was not zero. It was 60 lb, so it is not proportional.
Answer:
linear
nonproportional
uh its i dont really know but its math
Answer:
87.29,,,,,,,,
Step-by-step explanation:
87290 mm =87.29m