Answer:
about 33%
Step-by-step explanation:
Answer:e
Step-by-step explanation:
e
work out the value of r in the equation below
5.8/r=tan 19
give your answer in 1d.p.
Answer: 16.8
Step-by-step explanation:
\(\frac{5.8}{r}=\tan 19^{\circ}\\\\\frac{r}{5.8}=\frac{1}{\tan 19^{\circ}}\\\\r=\frac{5.8}{\tan 19^{\circ}}}\\\\r \approx 16.8\)
Gary took a trip to bikini bottom. He recorded his progress along the way in the following table
Where is the table?
a. the general least-squares problem is to find an that makes as close as possible to .
The given statement exists true that the general least-squares problem exists if an is a m × n matrix and b is in r m.
How to Interpret Least squares problem for augmented matrix?The least squares method uses statistics to determine which set of data points fits a set of data points the best by minimizing the sum of the offsets or residuals of the data points from the plotted curve. To predict how dependent variables will behave, least squares regression is used.
The technique that we used to compute a least-squares solution of Ax = b is;
Compute the matrix A T A as well as the vector A T b .
Form the required augmented matrix for the given matrix equation A T Ax = A T b , and then row reduce.
This equation exists always consistent, and as such any solution K x will be a least-squares solution.
By definition, the least squares problem is to estimate xˆ such that |Axˆ − b| ≤ |Ax − b| for all x in IRⁿ.
This means that we are to find a vector x that creates Ax (which exists in the Col(A)) as close to b as possible.
The complete question is:
If a is an m × n matrix and b is in r m, the general least-squares problem is to find an x that makes ax as close as possible to b. true or false?
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the tree diagram below shows the probabilities for the simple events combining weather patterns and seasons of the year
The tree diagram illustrates the probabilities associated with different combinations of weather patterns and seasons of the year. The tree diagram is a visual representation that presents the probabilities of various outcomes resulting from the combination of weather patterns and seasons of the year.
It is a useful tool for understanding the likelihood of specific events occurring based on different factors.
The diagram is structured hierarchically, with the weather patterns forming the first level and the seasons of the year forming the second level. Each branch represents a specific combination, and the probability associated with that combination is indicated on the branch.
By analyzing the diagram, one can observe how the probabilities change depending on the weather patterns and seasons. For instance, certain weather patterns may be more prevalent during specific seasons, resulting in higher probabilities for certain combinations.
Overall, the tree diagram serves as a visual aid to comprehend the probabilities associated with simple events combining weather patterns and seasons of the year, enabling a better understanding of the likelihood of different outcomes based on these factors.
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Find the smallest number a such that A + BB is regular for all B> a.
The smallest number a such that A + BB is regular for all B > a can be determined by finding the eigenvalues of the matrix A. The value of a will be greater than or equal to the largest eigenvalue of A.
A matrix A is regular if it is non-singular, meaning it has a non-zero determinant. We can consider the expression A + BB as a sum of two matrices. To ensure A + BB is regular for all B > a, we need to find the smallest value of a such that A + BB remains non-singular. One way to check for singularity is by examining the eigenvalues of the matrix A. If the eigenvalues of A are all positive, it means that A is positive definite and A + BB will remain non-singular for all B. In this case, the smallest number a can be taken as zero. However, if A has negative eigenvalues, we need to choose a value of a greater than or equal to the absolute value of the largest eigenvalue of A. This ensures that A + BB remains non-singular for all B > a.
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will mark branliest!
show work.
Answer:
3/-2........-1.5 as decimal
Step-by-step explanation:
slope formula=y2-y1/x2-x1
6+3/-1-5
9/-6
3/-2..........or-1.5 as deciamal
Ellen Andrzejewski purchased the car in the ad for $7775. She made a down payment of $775.00. She financed the remainder at $331.16 per month for 24 months. What is the APR?
474 is the Annual percentage rate (APR).
What is APR in plain English?
If you have a balance on your credit card, you will pay an annual percentage rate (APR) of interest. The cost of borrowing money is what you pay in interest on a credit card. The interest rates on credit cards are often expressed as an annual rate. The yearly percentage rate is used to describe this (APR).
Certain credit cards feature variable APRs, which means that your rate may increase or decrease over time.
$331.16 * 24 + 775 - 7775 = 947.84
She over paid $ 947.84
24 months equals two years.
947.84/2 = 473.92 ≈ 474
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A dilation with scale factor 0.25 is performed on triangle 1 to produce triangle 2. Which statement MUST be true about the two triangles?
O Their corresponding sides have equal lengths, and their corresponding angles have equal measures.
• Their corresponding sides are parallel, and the angle measures of triangle 2 are 0.25 times the corresponding angle measures of triangle 1.
O Their corresponding sides are parallel, and their corresponding angles have equal measures.
O Their corresponding sides have equal lengths, and the angle measures of triangle 2 are 0.25 times the corresponding angle measures of triangle 1.
The correct statement is their corresponding sides have equal lengths, and the angle measures of triangle 2 are 0.25 times the corresponding angle measures of triangle 1.
What is property of similar triangle?
If the corresponding sides of two triangles have the same ratio and the corresponding angles are equal, then the triangles are similar.
They have parallel corresponding sides, and they have angles with the same measure.
hence, the correct statement is their corresponding sides have equal lengths, and the angle measures of triangle 2 are 0.25 times the corresponding angle measures of triangle 1.
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plss help ill give you brainiest
An elephant at the zoo lost 24 pounds over 6 months. The elephant lost the same amount of weight each month. Write an integer that represents the change in the elephant's weight each month.
Answer: lost 4 lbs every month
Step-by-step explanation:
24 divided by 6
= 4
Answer:
The elephant lost 4 pounds each month
Step-by-step explanation: if the elephant lost the same weight each month then you would need to divide 24 by 6 and you would get 4 .which is the elphants change in weight each month. Hope this helps!
Consider the function f(x) = −2x^3 +27x^2 − 84x + 10 This function has two critical numbers A< B:
A =______
and B = ______
f " (A) = ______
f " (B) = ______
Thus f(x) has a local ______at A (type in MAX or MIN)
and a local ______ at B (type in MAX or MIN)
The critical numbers of a function occur at the points where the derivative is either zero or undefined. To find the critical numbers of the function f(x) = \(-2x^3 + 27x^2 - 84x + 10,\) we need to find its derivative f'(x) and set it equal to zero.
Differentiating f(x) with respect to x, we get f'(x) = \(-6x^2 + 54x - 84\). Setting f'(x) equal to zero and solving for x gives us:
\(-6x^2 + 54x - 84 = 0\)
Dividing the equation by -6, we have:
\(x^2 - 9x + 14 = 0\)
Factoring the quadratic equation, we find:
(x - 2)(x - 7) = 0
So the critical numbers occur at x = 2 and x = 7.
Therefore, the values of A and B are A = 2 and B = 7.
To determine whether these critical numbers correspond to local maxima or minima, we need to evaluate the second derivative f''(x) of the function.
Differentiating f'(x) = \(-6x^2 + 54x - 84\), we obtain f''(x) = -12x + 54.
Substituting x = 2 into f''(x), we get:
f''(2) = -12(2) + 54 = 30
Substituting x = 7 into f''(x), we get:
f''(7) = -12(7) + 54 = 6
Since f''(2) > 0, it implies a concave up shape, indicating a local minimum at x = 2. On the other hand, f''(7) < 0 indicates a concave down shape, suggesting a local maximum at x = 7.
Therefore, f(x) has a local minimum at A (x = 2) and a local maximum at B (x = 7).
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if x and y are independent exponential random variables with respective rates λ and μ, what is the conditional distribution of x given that x < y ?
The conditional distribution of x given that x < y is an exponential distribution with rate λ/(λ+μ).
How to find conditional distribution of x given that x < y?We can start by using the definition of conditional probability:
\(P(x < y | x) = P(x < y and x) / P(x)\)
We know that x and y are independent, so we can write:
\(P(x < y and x) = P(x < y) P(x)\)
The probability density function of an exponential distribution with rate λ is given by:
f(x) = λ e^(-λx)
Therefore, we can write:
P(x) = ∫[x, ∞) λ e^(-λt) dt = e^(-λx)
Similarly,
P(x < y) = ∫[0, ∞) ∫[x, ∞) λ e^(-λx) μ e^(-μy) dy dx
= ∫[0, ∞) λ e^(-λx) [1 - e^(-μx)] dx
= 1 / (λ + μ)
Substituting these expressions in the original equation, we get:
P(x < y | x) = P(x < y) P(x) / P(x)
= P(x < y)
= (λ / (λ + μ))
Therefore, the conditional distribution of x given that x < y is an exponential distribution with rate λ/(λ+μ).
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Please help meeeeeeeeeee
Answer:
Okay
Step-by-step explanation:
want me to come over to your place
The length of a rectangle i 2cm greater than the width of the rectangle. The perimeter of the rectangle i 24cm
The length of the rectangle is 7 cm and the width is 5 cm.
Perimeter of a rectangle:The whole distance covered by the rectangle's borders or its sides is known as its perimeter. As we know the rectangle will have 4 sides then the perimeter of the rectangle will be equal to the total of its four sides. And the unit will be in meters, centimeters, inches, feet, etc.
The formula for the Perimeter of the rectangle is given by
Perimeter = 2( Length + Width )Here we have
The length of a rectangle is 2cm greater than the width of the rectangle
And perimeter of the rectangle = 24 cm
Let x be the width of the rectangle
From the given data,
Length of the rectangle = (x + 2) cm
As we know Perimeter of rectangle = 2(Length+width)
=> Perimeter of rectangle = 2(x+2 + x) = 2(2x +2)
From the given data,
Perimeter of rectangle = 24cm
=> 2(2x +2) = 24 cm
=> (2x +2) = 12 [ Divided by 2 into both sides ]
=> 2x = 12 - 2
=> 2x = 10
=> x = 5 [ divided by 2 into both sides ]
Length of rectangle, (x+2) = 5 + 2 = 7 cm
Therefore,
The length of the rectangle is 7 cm and the width is 5 cm.
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use the shell method to find the volume of the solid generated by revolving the region bounded by the line y
The shell method, we integrate 2πrh*dx, where r is the distance from the axis of revolution to the shell,
What is the shell method used for?The volume of the solid generated by revolving the region bounded by the line y = f(x), where f(x) is a function, using the shell method, we integrate 2πrh*dx, where r is the distance from the axis of revolution to the shell, h is the height of the shell, and dx represents an infinitesimally small change in x.
The limits of integration are determined by the intersection points of the line y = f(x) with the x-axis. We evaluate the integral from the lower limit to the upper limit to obtain the volume of the solid.
The shell method allows us to calculate the volume by considering infinitesimally thin cylindrical shells perpendicular to the axis of revolution.
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very fast
Show, by induction, that \( T(n)=10 n^{2}-3 n \quad \) if \( n=1 \)
Given that \(\(T(n)\) = \(10n^2-3n\)\) if (\(\(n=1\)\)), you have to prove it by induction. So, we have proved it by induction that \($$\(T(n)=10n^2-3n\)$$\) if ( n= 1). The given statement is true for all positive integers n
Let's do it below: The base case (n=1) is given as follows: \(T(1)\) =\(10\cdot 1^2-3\cdot 1\\&\)=\(7\end{aligned}$$\). This implies that \(\(T(1)\)\) holds true for the base case.
Now, let's assume that \(\(T(k)=10k^2-3k\)\) holds true for some arbitrary \(\(k\geq 1\).\)
Thus, for n=k+1, T(k+1) = \(10(k+1)^2-3(k+1)\\&\) = \(10(k^2+2k+1)-3k-3\\&\)=\(10k^2+20k+7k+7\\&\) = \(10k^2-3k+20k+7k+7\\&\) = \(T(k)+23k+7\\&\) = \((10k^2-3k)+23k+7\\&\) = \(10(k+1)^2-3(k+1)\).
Therefore, we have proved that the statement holds true for n=k+1 as well. Hence, we have proved it by induction that \($$\(T(n)=10n^2-3n\)$$\) if (n=1). Therefore, the given statement is true for all positive integers n.
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The volume of the triangular pyramid below is 256 units 3 . Find the value of x.
Answer:
Step-by-step explanation:
We can use the formula for the volume of a pyramid, which is:
V = (1/3) * B * h
where V is the volume, B is the area of the base, and h is the height.
In this case, we have a triangular pyramid, so the base is a triangle. Let's call the length of the base x, and the height of the pyramid h. Then, the area of the base is:
B = (1/2) * x * h
Substituting into the formula for the volume, we get:
256 = (1/3) * (1/2) * x * h * h
Simplifying and solving for h, we get:
256 = (1/6) * x * h^2
h^2 = (256 * 6) / x
h = sqrt((256 * 6) / x)
Now, let's use the given information that the three sides of the base have lengths x, 2x, and 3x, to find the area of the base:
B = (1/2) * x * (2x + 3x) / 2
B = (5/4) * x^2
Substituting this and the expression for h into the formula for the volume, we get:
256 = (1/3) * (5/4) * x^2 * sqrt((256 * 6) / x)^2
Simplifying, we get:
256 = (5/4) * x^2 * sqrt(1536 / x)
256 = (5/4) * x^2 * (sqrt(1536) / sqrt(x))
256 = (5/4) * x^2 * (12 / sqrt(x))
256 = 15 * x * sqrt(x)
Squaring both sides, we get:
65536 = 225 * x^3
Dividing both sides by 225, we get:
x^3 = 65536 / 225
Taking the cube root of both sides, we get:
x = (65536 / 225)^(1/3)
x ≈ 6.4
Therefore, the value of x is approximately 6.4 units.
which of the following is an area of mathematics that studies how competing parties interact
An area of mathematics that studies how competing parties interact is known as "game theory."
Game theory analyzes strategic decision-making in situations where multiple participants, known as players, make choices that affect each other's outcomes. It examines the interactions, strategies, and outcomes of these competitive or cooperative situations.
Game theory provides mathematical models and frameworks to analyze various scenarios, such as conflicts, negotiations, auctions, voting systems, and economic markets. It studies the behavior of rational players, their objectives, and the choices they make to maximize their own outcomes, considering the actions and reactions of other players.
The field of game theory explores concepts such as strategies, payoffs, Nash equilibrium, dominant strategies, and cooperative or non-cooperative games. It aims to predict and understand the behavior and outcomes of competitive situations and provides insights into decision-making, resource allocation, and the dynamics of interactions between individuals, organizations, or even nations.
Overall, game theory serves as a valuable tool in various disciplines, including economics, political science, psychology, and computer science, to analyze and model situations where competing parties interact.
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Determine the slope of a line that is perpendicular to a line with coordinates (4, -2) and (-1, 3).
keeping in mind that perpendicular lines have negative reciprocal slopes, let's check for the slope of the line above
\((\stackrel{x_1}{4}~,~\stackrel{y_1}{-2})\qquad (\stackrel{x_2}{-1}~,~\stackrel{y_2}{3}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{3}-\stackrel{y1}{(-2)}}}{\underset{run} {\underset{x_2}{-1}-\underset{x_1}{4}}} \implies \cfrac{3 +2}{-1 -4}\implies \cfrac{5}{-5}\implies \cfrac{1}{-1}\implies -1 \\\\[-0.35em] ~\dotfill\)
\(\stackrel{~\hspace{5em}\textit{perpendicular lines have \underline{negative reciprocal} slopes}~\hspace{5em}} {\stackrel{slope}{\cfrac{1}{-1}} ~\hfill \stackrel{reciprocal}{\cfrac{-1}{1}} ~\hfill \stackrel{negative~reciprocal}{-\cfrac{-1}{1}\implies 1}}\)
Half of the sum of 3x and 4
Answer:
1.5x + 2
Step-by-step explanation:
(3x + 4)/2 = 1.5x + 2
Eight packages of paper weigh a total of 38 pounds. What is the weight of 40 packages of the same kind of paper?
Answer:
1,520 pounds
Step-by-step explanation:
40x 38 = 1520
All possible outcomes of size n are selected from a population and the mean of each sample is determined. what is the mean of the sample means?
The mean of the sample means, also known as the expected value of the sample mean, is equal to the population mean.
When all possible outcomes of size n are selected from a population and the mean of each sample is determined, the sample means to represent a sampling distribution. The mean of this sampling distribution denoted as the expected value of the sample means or simply the mean of the sample means, is equal to the population mean.
This result is derived from the concept of sampling. Each sample is a random selection from the population, and on average, these samples will reflect the characteristics of the population. Therefore, the mean of the sample means represents the average value that would be obtained if an infinite number of samples of size n were taken from the population. Since each sample mean is an unbiased estimator of the population mean, the mean of the sample means will be equal to the population mean. This property holds under certain conditions, such as when the sampling is random and independent.
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You manage a clothing store and budget $6000 to restock 200 shirts.
You can buy T-shirts for $12 each, polo shirts for $24 each, and rugby shirts for $36 each. If you want to have twice as many rugby shirts as polo shirts, how many of each type of shirt should you buy?
A fter solving system of equations, we can conclude that, you should buy 60 Polo Shirts, 20 T- Shirts, 120 Rugby Shirts.
Let, x be the number of T-shirts, y be the number of polo shirts and z be the number of rugby shirts
A clothing store and budget $6000 to restock 200 shirts.
So, we get an equation,
x + y + z = 200 ...................(1)
If you want to have twice as many rugby shirts as polo shirts.
So, we get an equation,
z = 2y ......................(2)
You can buy T-shirts for $12 each, polo shirts for $24 each, and rugby shirts for $36 each.
So, we get an equation,
12x + 24y + 36z = 6000
We rewrite above expression as,
x + 2y + 3z = 500 ..............(3)
Now we substitute z = 2y, into equations (1) and (3)
x + y + 2y = 200
x + 3y = 200 ..................(4)
and equation (3) becomes,
x + 2y + 3(2y) = 500
x + 8y = 500 ...............(5)
After solving equations (4) and (5) we get,
y = 60 and x = 20
Now substitute above value of y in equation z = 2y
z = 2(60)
z = 120
Therefore, after solving system of equations, we can conclude that, you should buy 60 Polo Shirts, 20 T- Shirts, 120 Rugby Shirts.
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Give your answer in index form
Answer:
1/4
Step-by-step explanation:
\(2^{4}\) x \(2^{3}\) = 16 x 8 = 128 = numerator
\(2^{5}\) x \(2^{4}\) = 32 x 16 = 512 = denominator
128/512 = 1/4 if you divide both numbers by 128 then you get 1 over 4 = 1/4
Solve for x in the equation x2 - 12x+36-90
0
X=6+3/10
X=6:27
X= 12+3.22
X = 12:3.10
Answer:
The Answer is A) X=6+3/10
Step-by-step explanation:
x = 6 + 3 √ 10 , 6 − 3 √ 10
Decimal Form:
x = 15.48683298 , − 3.48683298
Use a double integral to find the area of one loop of the rose r = 2 cos(30). Answer:
he area of one loop of the rose r = 2cos(30) is 6π.To find the area of one loop of the rose curve r = 2cos(30), we can use a double integral in polar coordinates. The loop is traced by the angle θ from 0 to 2π.
The area formula in polar coordinates is given by:
A = ∫∫ r dr dθ
For the given rose curve, r = 2cos(30) = 2cos(π/6) = √3.
Therefore, the double integral for the area becomes:
A = ∫[0 to 2π] ∫[0 to √3] r dr dθ
Simplifying the integral, we have:
A = ∫[0 to 2π] ∫[0 to √3] √3 dr dθ
Integrating with respect to r gives:
A = ∫[0 to 2π] [√3r] evaluated from 0 to √3 dθ
A = ∫[0 to 2π] √3√3 - 0 dθ
A = ∫[0 to 2π] 3 dθ
A = 3θ evaluated from 0 to 2π
A = 6π
Therefore, thethe area of one loop of the rose r = 2cos(30) is 6π.
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In summer2021, electric power at peak usage times costs about 0.64 $/kWh ≈ 1.8 × 10−7 $/J. An ordi-
nary electrically-powered device in a home might operateat 110 V and 0.12 A. What is the cost per second to power
such a circuit during the peak usage period?
The cost per second to power such a circuit during the peak usage period is approximately \(2.376 x 10^-6\)$/s. The cost per second to power the circuit during the peak usage period can be calculated using the following steps:
Calculate the power consumption of the device-The power consumption of the device can be calculated using the formula: Power = Voltage x Current. P = V x I, Substituting the given values:
P = 110V x 0.12A
= 13.2 W
Calculate the cost per second-The cost per second can be calculated using the formula:
Cost per second = Power x Cost per Joule
C = P x CC
= 13.2 W x 1.8 x \(10^-7\) $/J
≈ 2.376 x 10^-6 $/s
Therefore, the cost per second to power such a circuit during the peak usage period is approximately 2.376 x\(10^-6\) $/s.
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Is this set of ordered pairs a function?
{(11,3), (6,5), (7, 1), (9,7), (8,3)}
Answer:
yes
Step-by-step explanation:
the x-axis are different
Answer:
yes
Step-by-step explanation:
this is a function because it is many-to-one
(11,3)
(8,3)
they both have the same output (y) but not the same input (x) it is a function.
if it has the same input (x) and different outputs (y) if is not a function then.
Garrett wants to bake a blueberry pie. At the market, blueberries cost $1.90 per pound. If he pays $4.75 for blueberries, how many pounds does he buy?
Answer:
Step-by-step explanation:
Number of pounds for 4.75 = 4.75 ÷ 1.90 = 2.5 pounds
Which equation shows the correct factors for the quadratic equation 24x^2−15=54x?
Step-by-step explanation:
24x^2_54x_15=0
(12X +3 ) ( 2X _5 ) . = O
12x +3 =0
X= - 1/4
or
2x _ 5=0
X = 5/ 2
The equation that shows the factor for the quadratic equation is \((12x +3)(2x - 5) = 0\)
The equation is given as:
\(24x^2 - 15 = 54x\)
Equate to 0
\(24x^2 - 15 - 54x = 0\)
Rewrite as:
\(24x^2 - 54x - 15 = 0\)
Expand the above equation
\(24x^2 -60x + 6x - 15 = 0\)
Factorize the above equation
\(12x(2x -5) + 3(2x - 5) = 0\)
Factor out 2x - 5
\((12x +3)(2x - 5) = 0\)
Hence, the equation that shows the factor for the quadratic equation is \((12x +3)(2x - 5) = 0\)
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Ahhh pls help!
A cruise ship made a trip to Vancouver and back. The trip to Vancouver took 6 hours, and the trip back took 9 hours. The ship averaged a speed of 12 km/h (kilometers per hour) on the trip back. What was the ship's average speed on the trip to Vancouver?