Answer:
\(\pi \times 39 \times 81 \times 2 = 9919.26\)
if cos theta + sin theta = root 2 cos thetha prove that cos theta - sin theta = root 2 sin theta
Answer:
We have:
If:
Cos(θ) + Sin(θ) = √2*cos(θ)
We want to prove that:
Cos(θ) - Sin(θ) = √2*Sin(θ)
Well, let's start with the first relation:
Cos(θ) + Sin(θ) = √2*cos(θ)
Now we can subtract 2*Sin(θ) and we will get:
Cos(θ) + Sin(θ) - 2*Sin(θ) = √2*cos(θ) - 2*sin(θ)
Cos(θ) - Sin(θ) = √2*cos(θ) - 2*sin(θ)
Now, we also can rewrite the first equation as:
Cos(θ) + Sin(θ) = √2*cos(θ)
Cos(θ) - √2*cos(θ) = - Sin(θ)
Cos(θ)*( 1 - √2) = -Sin(θ)
Cos(θ) = -Sin(θ)/( 1 - √2) = Sin(θ)/(- 1 + √2)
We can replace this in the right side of theequation:
Cos(θ) - Sin(θ) = √2*cos(θ) - 2*sin(θ)
Cos(θ) - Sin(θ) = √2* Sin(θ)/(- 1 + √2) - 2*sin(θ)
Cos(θ) - Sin(θ) = (√2/(- 1 + √2) - 2)*Sin(θ)
Now we have this:
√2/(- 1 + √2)) - 2 = a
if we multiply all by (-1 + √2) we get:
√2 - 2*(-1 + √2) = a*(-1 + √2)
√2 + 2 - 2*√2 = a*(-1 + √2)
2 - √2 = a*(-1 + √2)
√2*(√2 - 1) = a*(-1 + √2)
√2*(√2 - 1)/(-1 + √2) = a
√2 = a
Then:
√2/(- 1 + √2)) - 2 = √2
If we replace this in the equation:
Cos(θ) - Sin(θ) = (√2/(- 1 + √2) - 2)*Sin(θ)
We get:
Cos(θ) - Sin(θ) = √2*Sin(θ)
Which is the thing we wanted to get.
Please find attached herewith the solution of your question.
If you have any query, feel free to ask.
A jar contains 4 red marbles, numbered 1 to 4, and 11 blue marbles numbered 1 to 11. A marble is chosen at random. If you're told the marble is red, what is the probability that it has the number 2 on it?
Answer:
25%
Step-by-step explanation:
So there are four marbles that are red.
It doesnt matter if we have a probability of picking blue because the question says you are picking red.
There are four possible outcomes and one favorable outcome so it is 1/4 of 25/100 or 25%
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
Will a large-sample confidence interval be valid if the population from which the sample is taken is not normally distributed? explain
A normal distribution is a type of continuous probability distribution for a real-valued random variable in statistics.
Yes, the large-sample confidence interval will be valid.
What is meant by normal distribution?A normal distribution is a type of continuous probability distribution for a real-valued random variable in statistics.
The normal distribution, also known as the Gaussian distribution, is a symmetric probability distribution about the mean, indicating that data near the mean occur more frequently than data far from the mean.
The confidence interval will be valid regardless of the shape of the population distribution as long as the sample is large enough to satisfy the central limit theorem.
What does a large sample confidence interval for a population mean?A sample is considered large when n ≥ 30.
By 'valid', it means that the confidence interval procedure has a 95% chance of producing an interval that contains the population parameter.
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Using Cavalieri's principle, which of the following can be shown to have the same volume as a triangular prism with base area pi r² and height h?
Hence, a cylinder with height h and base area \(\pi r^{2}\) may be proven to have the same volume as a triangular prism.
What is a cylinder?Two parallel circular bases joined by a curving surface form the three-dimensional geometric object known as a cylinder. Due of its parallel and congruent bases, it is a sort of prism.
When someone uses the word "cylinder,” they often mean a right circular cylinder with circles for bases and an axis that is perpendicular to the bases' planes.
A cylinder's volume may be calculated using the formula V = \(r^{2}\)h, where r denotes the perimeter of the base and h the height of the cylinder. L = 2rh, where r is the radius of a base and h is the height of the cylinder, is the formula for a cylinder's lateral surface area.
Cavalieri's principle states that if two solid objects have the same height and every cross-section taken perpendicular to a common axis has the same area, then the two objects have the same volume.
Let's consider the given triangular prism with base area \(\pi\)\(r^2\) and height h. If we take a cross-section perpendicular to the base at a height y, we get a circle with radius r multiplied by a triangle with base 2r and height y. The area of this cross-section is:
\(A(y) = \pi r^2 + (2r)(y) / 2\)
Simplifying, we get:
\(A(y) = \pi r^2 + ry\)
Now, let's consider a cylinder with base area pi r² and height h. If we take a cross-section perpendicular to the height at a height y, we get a circle with radius r multiplied by a rectangle with base 2r and height h. The area of this cross-section is:
\(A'(y) = \pi r^ + (2r)(h) = \pi r^2 + 2rh\)
By Cavalieri's principle, the triangular prism and the cylinder have the same volume if A(y) = A'(y) for all y from 0 to h. Let's check:
\(\pi r^² + ry = \pi r^² + 2rh\)
\(ry = 2rh\)
\(y = 2r\)
So, we see that the areas are equal for all y between 0 and h, except at \(y = 2r.\) However, this is just a single point and has no effect on the volume,
Therefore, the cylinder with base area \(\pi\)\(r²\) and height h has the same volume as the triangular prism, with base area \(\pi\)r² and height h.
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whats the squareroot of 18
Answer:
it should be 4.24264068712 looked it up
Answer:
18 doesn't have a square root but you can simplify it
\( \sqrt{18 } \)
then you take 9 which is a square number and divide it to get 3 which you'll place on the outside
\( 3\sqrt{2} \)
Iffle) = 0, which of the following statements must be true? O A All three statements are true O B. The point (CO) lies on the graph of flx). O c.x-cis a factor of f(x) O D. cis a 0 for fb).
Given,
f(c) = 0Let's check all the choices,
• B. The point (c,0) lies on the graph of f(x).
This is true since plugging in "c" into the function yields "0".
• C. x - c is a factor of f(x).
Since the value "c" yields "0" as an output, we can say that x - c is a factor of the function.
D. c is a 0 for f(x).
This is true. Since an input of "c" yields "0" as an output, this is known as a zero of the function.
All three statements, B, C, and D, are true.
A is the correct answer.
The vertices of a figure are W(-6,-2), X(-2,-2), Y(-2,-6), and Z(-5, -6).. Rotate the figure 270°
counterclockwise about the origin.
W'(-2 , 6), X'(-2 , 2), Y'(-6 , 2), Z'(-6 , 5).
This is the vertices after the 270° counterclockwise rotation.
What does counterclockwise rotation mean ?Counterclockwise is a turn to the left, opposite the direction of the hands on a clock.Given vertices,
W(-6,-2), X(-2,-2), Y(-2,-6), and Z(-5, -6).
Here we have to rotate 270°.
We know that,
Rotating a point 90° counterclockwise: (x, y) → (-y, x).
Rotating a point 180° counterclockwise: (x, y) → (-x, -y).
Rotating a point 270° counterclockwise: (x, y) → (y, -x).
So here we are rotating the figure 270°,
W(-6,-2)→ W'(-2 , 6)
X(-2,-2)→ X'(-2 , 2)
Y(-2,-6)→ Y'(-6 , 2)
Z(-5, -6)→ Z'(-6 , 5)
The vertices after rotating 270° counterclockwise about origin is:
W'(-2 , 6), X'(-2 , 2), Y'(-6 , 2), Z'(-6 , 5).
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Questions set #1. Determine the Fourier transform X(jω) of the following signals, and then Draw the spectrum of x(t) [6 marks] a. x(t)=e +t
u(t) b. x(t)=e −4(t−1)
u(t−1) c. x(t)=cos2t d. x(t)=sin2t e. x(t)=2cos2t+2sin2t f. x(t)=2
a. To determine the Fourier transform of x(t) =\(e^t\) * u(t), where u(t) is the unit step function, we can use the property that the Fourier transform of e^(at) * u(t) is 1 / (jω - a). Applying this property, we get:
X(jω) = 1 / (jω - 1)
b. For x(t) = e^(-4(t-1)) * u(t-1), we can again use the property mentioned above to find its Fourier transform:
X(jω) = 1 / (jω + 4) * e^(-jω)
c. For x(t) = cos(2t), we can directly apply the Fourier transform property of cosine function:
X(jω) = π * [δ(ω - 2) + δ(ω + 2)]
d. For x(t) = sin(2t), we can use the Fourier transform property of sine function:
X(jω) = -jπ * [δ(ω - 2) - δ(ω + 2)]
e. For x(t) = 2cos(2t) + 2sin(2t), we can apply the linearity property of the Fourier transform:
X(jω) = 2π * [δ(ω - 2) + δ(ω + 2)] - j2π * [δ(ω - 2) - δ(ω + 2)]
f. For x(t) = 2, the Fourier transform of a constant function is given by:
X(jω) = 2π * δ(ω)
To draw the spectrum of x(t), you can plot the magnitude of X(jω) against ω. The resulting spectrum will depend on the specific values of ω and the coefficients in each transform.
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Solve the system of linear equations using substitution. Use pencil and paper. Which expression would be easier to substitute into the other equation, in order to solve this problem? Explain your reasoning. X=6y-2 x=6y=9
Answer:
X = 6y-2 is the easier substitution for another equation because all you have to do is just plug in the equation into the value of x.
a metal-cutting operation has a target value of 20 and consistently averages 19.8 with a standard deviation of 0.5. the design engineers have established an upper specification limit of 22 and a lower specification limit of 18. which statement concerning this process is true?
The process is capable of producing outputs within the specification limits is true.
There are a number of potential reasons for why the process is not meeting the target value. One possibility is that the target value is too ambitious and is not realistic given the current process capability. Another possibility is that there is some inherent variability in the process that is not being accounted for. It is also possible that there are some external factors that are affecting the process, such as changes in the raw materials or the environment.
The design engineers have established an upper specification limit of 22 and a lower specification limit of 18. This means that they are confident that the process is capable of producing outputs within these limits. However, the fact that the process is consistently averaging 19.8 with a standard deviation of 0.5 suggests that there is some room for improvement.
One potential way to improve the process is to focus on reducing the inherent variability. This can be done by identifying and addressing the sources of variability in the process. Another potential way to improve the process is to reduce the target value. This may be necessary if the current target value is not realistic given the process capability.
It is also important to monitor the process over time to ensure that it is remaining within the specification limits. This will help to identify any potential issues that may arise and allow for corrective action to be taken if necessary.
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A.The process is in statistical control.
B.The process is capable of producing outputs within the specification limits.
C.The process is capable of producing outputs within the tolerance limits.
D.The process is capable of producing outputs within the control limits.
E.The process is capable of producing outputs that are normally distributed. The process is capable of producing outputs within the specification limits
which statement concerning this process is true?
Answer these questions
Answer:
62
8.8
2.7
Step-by-step explanation:
that should be right. try that out
Answer:
62,8.8,2.8
Step-by-step explanation:
Someone help I’m stuck on this
Answer: 1 is 2 rectangles, 4 in a triangle and a rhombus I think.
Step-by-step explanation:
It says what would the shapes be shown as if it was split on the line.
Kyle drops a ball from a height of 15 feet above the ground. The function h = −16t^2 + 15 gives the height h of the ball (in feet) after t seconds. Graph the function. Then determine the approximate time the ball hits the ground.
Answer:
The ball will hit the ground at 0.968 seconds.
Step-by-step explanation:
Please refer to the attached graph in the answer area.
The given equation of height according to input variable time 't' is:
\(h = - 16 t^{2} + 15 ...... (1)\)
h is in feet
t is in seconds
Both the values 't' and 'h' will be positive. (Time and height can never be negative)
To determine the time, at which the ball hits the ground, i.e. the height becomes 0.
Putting value of h = 0 in equation (1)
\(0 = - 16 t^{2} + 15 \\\Rightarrow t^{2} = \dfrac{15}{16}\\\Rightarrow t = \sqrt{\dfrac{15}{16}}\\\Rightarrow t = 0.968\ sec\)
Hence, the time at which the ball hits the ground is 0.968 seconds.
The student council needs posters for the Winter Carnival. The print shop charges $15 for each print job. Each poster will cost an additional
$1.35.
Full Question:
The student council needs posters for the Winter Carnival. The print shop charges $15 for each print job. Each poster will cost an additional $1.35.
Which equation shows the relationship between the number of posters, n, and the total cost, c, in dollars?
Answer:
\(C = 15 + 1.35n\)
Step-by-step explanation:
Given
\(Base\ Charge = \$15\)
\(Cost\ per\ print = \$1.35\)
Required
Determine an equation to calculate the total cost
First, we need to determine the cost of n posters;
If 1 poster costs $1.35, then
\(n\ posters = n * 1.35\)
\(n\ posters = 1.35n\)
Next, add the cost of n posters to the base charge. This gives total cost (C)
\(C = Base\ Charge + n\ posters\)
\(C = 15 + 1.35n\)
Answer:
I Did The Test And The Correct Answer is that c will equal to 1.35n + 15
It Is 1.35n + 15
A recipe requires & cup of oil for every cup of water. How much oil (in cups) is
needed per cup of water?
Answer:
the answer is one cup of oil for each cup of water. hope this helps!
This table shows the time it takes students in Homeroom 203 to get to school each morning: 1 Time Less than 10 min 10-19 min 20-29 min 30-39 min 40-49 min 50 min or more Find the experimental probability of a student in this homeroom taking a certain number of minutes to get to school. Make a probability distribution for this data. Number of Students 3, 5, 10, 7, 2, 3
Answer:
Step-by-step explanation:
To find the experimental probability of a student in Homeroom 203 taking a certain number of minutes to get to school, we need to divide the number of students who take that amount of time by the total number of students in the homeroom.
The total number of students in the homeroom is:
3 + 5 + 10 + 7 + 2 + 3 = 30
The probability of a student taking less than 10 minutes to get to school is:
3/30 = 0.1 or 10%
The probability of a student taking 10-19 minutes to get to school is:
5/30 = 0.166 or 16.6%
The probability of a student taking 20-29 minutes to get to school is:
10/30 = 0.333 or 33.3%
The probability of a student taking 30-39 minutes to get to school is:
7/30 = 0.233 or 23.3%
The probability of a student taking 40-49 minutes to get to school is:
2/30 = 0.066 or 6.6%
The probability of a student taking 50 minutes or more to get to school is:
3/30 = 0.1 or 10%
To make a probability distribution, we can list the possible outcomes (in this case, the time it takes to get to school) and their corresponding probabilities:
Time (min) Probability
Less than 10 0.1
10-19 0.166
20-29 0.333
30-39 0.233
40-49 0.066
50 or more 0.1
Note that the probabilities add up to 1, which is what we expect for a probability distribution.
Which one do I pick and explain how u got the answer
GIVING BRAINIEST
Answer:
I think it is 2/3x + 50/3
Step-by-step explanation:
So to find the first step, you go to the points that are on the actual corners and that's 2/3 slope. Then looking from the bottom of the graph it goes by tens, so it will help with the second part of the equation, and then you go over 3 so it would be 50/3. I could be very much wrong though
Use the greatest common factor and the distributive property to write equivalent expressions in factored form.
20g + 24h =
Answer:
4(5g+6h)
Step-by-step explanation:
What is the slope of this graph? 5 points
Answer:
-1
Step-by-step explanation:
rise/run 2/-2 = -1
help me i don’t know how to do this
Hi!
y = 16
x = 32
In 30-60-90 triangles, the hypotenuse is double the length of the shortest leg, and the longer leg is \(\sqrt{3}\) times the shorter leg.We are given the longest leg. To find the shortest leg, we must divide the longest leg value by \(\sqrt{3}\)
\(\cfrac{16\sqrt{3} }{\sqrt{3} }\)
The radicals cancel out and we are left with 16.
The length of y (the shortest leg) is 16.
Now, we also know that the hypotenuse is double the shortest leg. The shortest leg is 16, so if we double that, it's 32.
Reflect (-1, 4) over the x-axis.
Then translate the result up 3 units.
What are the coordinates of the final point?
If a point (-1, 4) reflected over the x-axis then translate the result up 3 units then the coordinates of the final point are (-1, -1)
What is Coordinate Geometry?A coordinate geometry is a branch of geometry where the position of the points on the plane is defined with the help of an ordered pair of numbers also known as coordinates.
Reflecting a point over the x-axis negates the y-coordinate, while leaving the x-coordinate unchanged.
Therefore, reflecting (-1,4) over the x-axis gives us the point (-1,-4).
Translating a point up 3 units means adding 3 to the y-coordinate. Therefore, translating (-1,-4) up 3 units gives us the point:
(-1, -4 + 3) = (-1, -1)
So the final point is (-1,-1).
Hence, if a point (-1, 4) reflected over the x-axis then translate the result up 3 units then the coordinates of the final point are (-1, -1)
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Based on the "Regression" results, what’s the coefficient for the weight ‘carat’? How much change in price would be, averagely, if the weight of a VS1 diamond increase 0.1 carat?
The coefficient for the weight 'carat' based on the "Regression" results is X. The average change in price for a VS1 diamond if the weight increases by 0.1 carat would be Y.
In regression analysis, coefficients represent the relationship between the independent variables (such as weight) and the dependent variable (in this case, price). The coefficient for the weight 'carat' indicates the change in price associated with a one-unit increase in carat weight, holding other variables constant.
To determine the exact coefficient value, it is necessary to refer to the specific regression results. The coefficient could be positive, indicating that as the weight increases, the price also increases, or it could be negative, indicating an inverse relationship.
Additionally, based on the coefficient value, you can estimate the average change in price for a specific increase in weight. If the coefficient for 'carat' is X, and the weight of a VS1 diamond increases by 0.1 carat, the average change in price would be Y.
To obtain the precise values for X and Y, it is essential to refer to the specific regression analysis results provided. The coefficient and the corresponding change in price can vary depending on the dataset and the specific regression model used.
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[amc10b.2011.7] the sum of two angles of a triangle is $\frac{6}{5}$ of a right angle, and one of these two angles is $30^{\circ}$ larger than the other. what is the degree measure of the largest angle in the triangle?
The degree measure of the largest angle is 72° in the triangle.
We have, The sum of two angles of a triangle is 6/5 of a right angle.
One of these two angles is 30° larger than the other.
Let A and B be the two angles of the triangle such that A = B + 30°.
We know that the sum of three angles in a triangle is 180°.
⇒ A + B + C = 180°
⇒ B + 30° + B + C = 180°
⇒ 2B + C = 150°
We also know that the sum of two angles of a triangle is 6/5 of a right angle.
⇒ A + B = 6/5 × 90°
⇒ B + 30° + B = 108°
⇒ 2B = 78°
⇒ B = 39°
C = 150° - 2B ⇒ 72°
A = B + 30° ⇒ 39° + 30° ⇒ 69°
Therefore, the degree measure of the largest angle in the triangle is 72°.
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3 1/8 +4 3/8 solve the question
Answer:
7 1/2
Step-by-step explanation:
Let's add the whole numbers first, 3 + 4 = 7
Then, we add the fraction, and since the denominator is the same, there's no need for a change, so we just add the top. 1/8 + 3/8 is 4/8, which can be simplified to 1/2
so answer is 7 1/2
Below are Erica’s bowling scores from her last five games.
89, 98, 110, 98, 105
Erica added up all her scores and divided by 5. Which measure of central tendency did she find?
Question 1 options:
Mean
Median
Mode
Range
Answer:
Mean
Step-by-step explanation:
please tell this question answer I dont know
Answer:
a (26+10)-2 =34
b (34+42)-42 = 34
c ( 39+40)-45 =34
d (52+25)-43 =34
e(25+22)-13 =34
f (47+11)-24 =34
g(59+19)-35 =34
h (71 +7)-44= 34
solved
write six different iterated triple integrals for the volume of the tetrahedron cut from the first octant by the plane xyz. evaluate the first integral.
The iterated triple integrals for the volume of the tetrahedron cut from the first octant by the plane XYZ is 84
The term iterated triple integrals means the result of applying integrals to a function of more than one variable (for example or ) in a way that each of the integrals considers some of the variables as given constants.
Here we have to write six different iterated triple integrals for the volume of the tetrahedron cut from the first octant by the plane XYZ and then we have to evaluate the first integral.
Here in this case we will integrate with respect to y first.
Therefore, the iterated integral that we need to compute is,
∬6xy²dA=∫⁴₂∫₁²6xy²dydx
When we per the first stage integral, then we get,
=> ∫⁴₂ (2xy³)₁²dydx
When we expand it then we get,
=> ∫⁴₂ [16x - 2x] dx
=> ∫⁴₂ 14x dx
Then we further integrate this one, then we get.,
=> ∫⁴₂ 14x dx = [7x²]₂⁴
=> [7(4)² - 7(2)²]
=> 112 - 28
=> 84
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Find the value of the angle θ rounded to 1 DP.
Answer:
ok first we add 9 and 29 together
38
now we add 90
128
so the other angle is
52
so we just use the formulas
and
Side a = 26.56371
Side b = 43.14662
Side c = 34
so the side with a x on it is 26.6
so know we have to do the same thing but not including the top part
ok so the side with x on it is 18.8
so 26.6-18.8=7.8
x=7.8
*WARNING* This shoud be close to the answer but may to up to a couple dp higher or lower sorry i just don't have time to be more accurate
Hope This Helps!!!
f(t)=e5t+4t+7ln(t2+3c)+te-1+5e6
where c is constant
The function f(t) is defined as e raised to the power 5t plus 4t plus the natural logarithm of the quantity t squared plus 3 times the constant c, raised to the power of 7, plus t times e raised to the power of -1 plus 5 times e raised to the power of 6.
Given a function:
f(t)=e5t+4t+7ln(t2+3c)+te-1+5e6
where c is a constant.
The solution to the question is shown below.
Step 1: We have given a function:
f(t)=e5t+4t+7ln(t2+3c)+te-1+5e6
We have to find the number of words we have to write to express this function in words.
Step 2: Solution
f(t) = et5+4t + ln(t²+3c)⁷ +te-1+5e⁶
Where,
et5+4t = exponential function
ln(t²+3c)⁷ = natural logarithmic function
te-1 = linear function
e⁶ = exponential function
Therefore, f(t) can be expressed in words as:
The function f(t) is defined as e raised to the power 5t plus 4t plus the natural logarithm of the quantity t squared plus 3 times the constant c, raised to the power of 7, plus t times e raised to the power of -1 plus 5 times e raised to the power of 6.
Step 3: Conclusion
Hence, the function f(t) can be expressed in words with:The function f(t) is defined as e raised to the power 5t plus 4t plus the natural logarithm of the quantity t squared plus 3 times the constant c, raised to the power of 7, plus t times e raised to the power of -1 plus 5 times e raised to the power of 6.
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Please Help writing equations!