The approximation of the integral ∫(x – 3)ex dx by the composite Trapezoidal rule with n = 4 is approximately: -5.1941.
To approximate the integral ∫(x – 3)ex dx using the composite Trapezoidal rule with n = 4, we divide the interval [a, b] into n subintervals of equal width. In this case, we don't have the limits of integration provided, so we'll assume the interval to be [a, b] = [a, a+4] for simplicity.
Let's denote h as the width of each subinterval, given by
\(h = (b - a) / n \\= 4 / 4 = 1\)
Using the composite Trapezoidal rule formula, the approximation is given by:
\(Approximation = h/2 * [f(a) + 2*f(a + h) + 2*f(a + 2h) + ... + 2*f(a + (n-1)h) + f(b)]\)
Now, let's calculate the values of the function at each interval endpoint:
\(f(a) = (a - 3)*e^a\\f(a + h) = (a + h - 3)*e^{a + h}\\f(a + 2h) = (a + 2h - 3)*e^{a + 2h}\\f(a + 3h) = (a + 3h - 3)*e^{a + 3h}\\f(b) = (b - 3)*e^b\)
\(Approximation = (1/2) * [(a - 3)*e^a + 2*(a + h - 3)*e^{a + h} + 2*(a + 2h - 3)*e^{a + 2h} + 2*(a + 3h - 3)*e^{a + 3h} + (b - 3)*e^b]\)
\(= -5.1941\)
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Please helllppp . . . only give answer if you are 100% sure it's correct please!!
Solve In(x – 2) – In(x – 3) = 1. Round your answer to three decimal places.
#natural logarithm #algebra 2
Condene the logarithms on the left side by applying the property, ln(a) - ln(b) = ln(a / b):
ln(x - 2) - ln(x - 3) = 1
→ ln((x - 2) / (x - 3)) = 1
Now take the exponential of both sides:
exp(ln((x - 2) / (x - 3))) = exp(1)
(x - 2) / (x - 3) = e
Solve for x :
x - 2 = e (x - 3)
x - 2 = e x - 3e
x - e x = 2 - 3e
(1 - e) x = 2 - 3e
x = (2 - 3e) / (1 - e) ≈ 3.582
If 25% of a number is 40, what is the missing number?
Answer:
160
Step-by-step explanation:
If 1/4 of the number is 40, then the number will be 160
Each internal angle of regular n sided polygon in 162 find n
Answer:
n = 20
Step-by-step explanation:
in a polygon
interior angle + exterior angle = 180°, so
162° + exterior angle = 180° ( subtract 162° from both sides )
exterior angle = 18°
the sum of the exterior angles of a polygon = 360°
since the polygon is regular then each exterior angle is congruent, then
n = 360° ÷ 18° = 20
A number minus the product of 36 and its reciprocal is less than zero. Find the numbers which satsify this condition
Answer:
A number minus the product of
4
and its reciprocal is less than zero. Find the numbers which satisfy this condition.
AAny number less than
−
2
or between
0
and
2
BAny number between
−
2
and
2
CAny number less than
2
DAny number between
0
and
2
Solution
Let the number be x
Then
x
−
(
4
×
1
x
)
≤
0
⇒
x
≤
4
x
⇒
x
2
≤
4
⇒
|
x
|
≤
2
⇒
−
2
≤
x
≤
2
Step-by-step explanation:
The numbers which satisfy this condition is less than 1. it will be 0, - 1, -2, 0, -3, -4, -5, -6, -7..................
let
the number = x
The reciprocal of 36 = 1 / 36
Therefore, a number minus the product of 36 and it's reciprocal can be express below
x - 36 × 1 / 36Then when it is less than zero, it can be express as follows
x - 36 × 1 / 36 < 0 x - 1 < 0The number(x) which satisfy this condition (x - 1 < 0) is less than 1. This means the numbers are 0 to negative infinity.
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Can y’all help me ???
Answer:
this question is very difficult
Answer:
ShareChat ਸਤਿ ਦੇ ਨਾਲ ਨਾਲ Happy birthday to make doll small 1 ਸਤਿ ਸਤਿ ਸਤਿ 478figxigxurRyyv ਦੇ ਨਾਲ ਨਾਲ
Find the product of 8.12 and 2.4
Plz someone help .
Answer:
19.488
Step-by-step explanation:
8.12 x 2.4 = 19.488
Which ordered pair is not included in a graph y = 2x + 5? Group of answer choices (0, 0) (1, 7) (0.5, 6) (2, 9)
Answer:
All of the given ordered pairs are correct\included.
Step-by-step explanation:
A ladder is placed against a tree. The bottom is located 5 feet from the base of the tree and the top of the ladder is 18 feet up the tree. What is the angle created between the ladder and tree? Include a sketch that shows all known information and clearly shows what you need to find. Show all work and give the answer rounded to the nearest tenth of a degree.
Answer:
The angle created between the ladder and tree is \(15.5^{0}\).
Step-by-step explanation:
The required sketch is shown in the attachment to this answer.
Applying the appropriate trigonometric function to the question, we have;
Tan θ = \(\frac{Opposite side}{Adjacent side}\)
= \(\frac{5}{18}\)
= 0.2777777777
⇒ θ = \(Tan^{-1}\) 0.2777777777
= 15.5241
= \(15.5^{0}\)
Therefore, the angle created between the ladder and tree is \(15.5^{0}\).
Comelia and Christopher are arguing about Real Number (R) Sets. Comelia says that all Whole (W) numbers are Rational (Q) and Christopher
says that all Rational (Q) numbers are Whole (W). Who is correct and explain why?
Unread
Search entries or author
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1
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12pt
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Explanation:
We're told that "Christopher says that all Rational (Q) numbers are Whole (W)", which makes Christopher not correct. Some rational numbers are whole numbers. For instance, the number 7 = 7/1 is rational and it's a whole number as well.
However something like 1/2 is rational, but it's not a whole number. A whole number doesn't have any fractional or decimal part to it. It can be thought of the number of something.
Comelia is correct because all whole numbers are rational. If x is some whole number, then x = x/1 is rational as well. Replace x with any whole number you want. Her statement does not work in reverse as shown above.
When drawing a Venn diagram, the circle for "whole numbers" will be entirely inside the circle for "rational numbers", and not the other way around.
Find the values of x for which the series converges. (Enter your answer using interval notation.)
∑(6)^nx^n
the series converges for x in the interval: (-1/6, 1/6)
The series ∑(6)^nx^n converges if |x| < 1/6. This can be determined using the ratio test, where we take the limit as n approaches infinity of the absolute value of the ratio of the (n+1)th term to the nth term:
|6(x^(n+1))/(x^n)| = 6|x|
As n approaches infinity, this limit is less than 1 if and only if |x| < 1/6. Therefore, the series converges for all x in the open interval (-1/6, 1/6).
In interval notation, we can write the answer as: (-1/6, 1/6).
The given series is:
∑(6^n)(x^n)
This is a geometric series with a common ratio of 6x. For a geometric series to converge, the absolute value of the common ratio must be less than 1:
|6x| < 1
To find the values of x for which the series converges, we can solve for x in the inequality:
-1 < 6x < 1
Divide by 6:
-1/6 < x < 1/6
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I wil give brainliest!!
Complete the statement about the square pyramid shown below.
Answer:
ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ
Step-by-step explanation:
ㅤㅤㅤㅤㅤㅤㅤㅤㅤ
Will Mark brainliest if answer both correctly / What is X= ? / conditional statement
Find the value of x.
Answer:
Buffalo
Step-by-step explanation:
jfvjuvf
Answer:
90
Step-by-step explanation:
its a right angle
Find 45% of 240 pls help me
Answer:
108
Step-by-step explanation:
240 x 0.45 = 108
In order to find the percentage of something, turn the percentage into a decimal and multiply it by the number. For example 45% becomes 0.45. Then to find the answer you multiply it by 240, finding what 45% of 240 is.
Answer:
108
Step-by-step explanation:
First find 40% of 240 = 96
Then 5% of 240 = 12
Add both of them together
96 + 12 = 108
Under her cell phone plan, Nayeli pays a flat cost of $41.50 per month and $5 per gigabyte. She wants to keep her bill under $50 per month. Write and solve an inequality which can be used to determine g, the number of gigabytes Nayeli can use while staying within her budget.
The inequality which can be used to determine the number of gigabytes is 41.5 + 5x < 50 and the solution is x < 1.7
How to write and solve an equation which can be used to determine the number of gigabytes?The given parameters are
Flat cost = $41.50
Rate = $5 per gigabyte
Budget = Under $50
The equation is represented as:
Total cost = Flat cost + Rate * Number of gigabyte
So, we have
y = 41.5 + 5x
The budget is under 50
So, we have
41.5 + 5x < 50
Subtract 41.5 from both sides
5x < 8.5
Divide by 5
x < 1.7
Hence. the inequality which can be used to determine the number of gigabytes is 41.5 + 5x < 50 and the solution is x < 1.7
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The angles in a triangle are in the ratio 3:2:1.
a) Show that the triangle is a right-angled triangle
b) The hypotenuse of the triangle is 25 cm long.
Calculate the length of the shortest side in the triangle
Answer:
see explanation
Step-by-step explanation:
(a)
sum the parts of the ratio, 3 + 2 + 1 = 6 parts
The sum of the 3 angles in a triangle = 180° , then
180° ÷ 6 = 30° ← value of 1 part of the ratio , then
3 parts = 3 × 30° = 90°
2 parts = 2 × 30° = 60°
1 part = 30°
The angles in the triangle are 90°, 60°, 30°
Thus the triangle is right angled
(b)
The shortest side is opposite the smallest angle, that is opposite 30°
Using the sine ratio in the right triangle and the exact value
sin30° = \(\frac{1}{2}\)
sin30° = \(\frac{opposite}{hypotenuse}\) = \(\frac{opposite}{25}\) = \(\frac{1}{2}\) ( cross- multiply )
2 × opposite = 25 ( divide both sides by 2 )
opposite = 12.5
That is shortest side is 12.5 cm
प
3
16. The function h = -161² + 32 +9 represents the height h (in feet) of a ball t seconds after it is thrown into the air.
a. Find the maximum height of the ball.
b. Graph the function.
The maximum height of the ball is 9.29 feet.
The given function is h(t) = -161t²+32t+9
To find the maximum height of the ball, we need to find the vertex of the quadratic function.
The vertex of the parabola with equation h = ax² + bx + c is given by the point (-b/2a, f(-b/2a)).
In this case, a = -161, b = 32, and c = 9
so the vertex is located at t = -b/2a
= -32/2(-161)
= 0.1 seconds.
Plugging this value into the equation, we get the height
h = -161(0.1)² + 32(0.1) + 9
= 9.29 feet
Therefore, the maximum height of the ball is 9.29 feet.
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The angles that share the same sine value as sin(45°) have terminal sides in quadrant .
The angles that share the same sine value as sin(45°) have terminal sides in second quadrant .
The sine function relates the ratio of the length of the side opposite an acute angle to the length of the hypotenuse of a right triangle. The sine of an angle is always between -1 and 1.
The sine of 45 degrees is √2/2, which is a positive value. Since the sine of an angle is positive in the first and second quadrants, the angles that share the same sine value as sin(45°) must have their terminal sides in the first or second quadrant.
To find the angles that have the same sine value as 45 degrees, we can use the inverse sine function, also known as the arcsine function. The arcsine of √2/2 is 45 degrees or π/4 radians, which is an angle in the first quadrant.
However, since the sine function is periodic, there are infinitely many angles with the same sine value as 45 degrees, and they are all separated by integer multiples of 360 degrees or 2π radians.
Therefore, the angles that share the same sine value as sin(45°) have terminal sides in second quadrant, and can be represented by the formula:
θ = n(360°) ± 45°
or
θ = n(2π) ± π/4
where n is an integer.
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Answer: ( ll ) edgen
Step-by-step explanation:
hello help please i’ll mark brainliest!!!
Answer:
Its is 1,3,4
Step-by-step explanation:
Mark me brainliest please <3
The midpoint of AB is M (4, 4). If the coordinates of A are (2, 1), what are the
coordinates
of B?
Answer:
(6,7)
Step-by-step explanation:
Let B(x,y).
By the midpoint formula,
4 is the average of 2 and x, so x = 6.Similarly, y = 7.So, the coordinates of B are (6,7).
Math
L Language arts
m grade > S.10 Choose two-step equations: word problems 8NH
Cozy Closet children's store is having its annual winter sale, when every item in the store
gets marked down. During the sale, pajama sets sell for $7 less than full price. Mr. Dorsey
purchases 3 matching pajama sets: one for each of his children. He pays a total of $57.
Which equation can you use to find how much money, f, each pajama set costs at full
price?
3f - 7 = 57
7(f-3) = 57
Submit
3(f- 7) = 57
7f- 3 = 57
V
The equation that we can use to find the money f of each pajama set costs at full is 3(x-7)=57
What is meant by profit and loss?The difference between the selling and cost prices is defined as profit. Loss is defined as the difference between the selling and cost prices.
Profit = Sales Price - Purchase Price In a loss, the cost price exceeds the projected selling price. Profit/Cost Price = 100. Loss% = Loss/Price Cost 100.
Given that,
Mr. Dorsey buys three sets of identical pajamas.
Let the original price of pajama set be x$
Marked price of pajama set be (x-7)
Given that the cost for three pajama sets =$57
Therefore,
(x-7)+(x-7)+(x-7)=57
=3x-21=57
=3(x-7)=57
The equation that we can use to find the money f of each pajama set costs at full is 3(x-7)=57
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Can someone help on where to put the numbers?
The domain is 0 ≤ x ≤ 52. The maximum number of laws that she can mow with 13 gallons is of 52, and the minimum number is of 0.
How to define the linear function?The slope-intercept definition of a linear function is given as follows:
y = mx + b.
In which:
m is the slope, representing the rate of change.b is the intercept, representing the value of y when the graph touches/crosses the y-axis.The graph touches the y-axis at y = 13, hence the intercept b is given as follows:
b = 13.
When x increases by 20, y decays by 5, hence the slope m is given as follows:
m = -5/20
m = -0.25.
Hence the function is:
y = -0.25x + 13.
From the intercept, the minimum amount can be mowed is given as follows:
0.
The maximum amount is given as follows:
-0.25x + 13 = 0
0.25x = 13
x = 13/0.25
x = 52.
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Describe geometrically the sets of points zin the complex plane defined by thefollowing relations:(1) |z−z1|=|z−z2|where z1, z2∈C.(2) 1/z =z.(3) Re(z) = 3.(4) Re(z)> c, (resp., ≥c) where c∈R.(5) Re(az +b)>0 where a, b ∈C.(6) |z|= Re(z) + 1.(7) Im(z) = cwith c∈R.
The complex plane, also known as the Argand plane, is a graphical representation of complex numbers in mathematics. It is a two-dimensional plane with the real axis representing the real part of a complex number and the imaginary axis representing its imaginary part.
1. The set of points in the complex plane that satisfy the relation |z-z1| = |z-z2| forms a circle with its center at the midpoint of z1 and z2, and with a radius equal to half the distance between z1 and z2.
2. The set of points in the complex plane that satisfies the relation 1/z = z forms a pair of lines that intersect at the origin, with slopes equal to 1 and -1. These lines divide the complex plane into four quadrants, and the set of points consists of the complex numbers that lie on the unit circle.
3. The set of points in the complex plane that satisfies the relation Re(z) = 3 forms a vertical line at x=3. All points on this line have the same real part, equal to 3.
4. The set of points in the complex plane that satisfies the relation Re(z) > c (respectively, >=c) forms a half-plane to the right (respectively, including) of the vertical line x=c. All points in this region have real parts greater than (respectively, greater than or equal to) c.
5. The set of points in the complex plane that satisfies the relation Re(az + b) > 0 forms a line that is the image of the real axis under the transformation az + b. The set of points consists of those complex numbers that lie to one side of this line.
6. The set of points in the complex plane that satisfy the relation |z| = Re(z) + 1 forms a hyperbola. The foci of the hyperbola are on the real axis, at x = -1 and x = 1.
7. The set of points in the complex plane that satisfies the relation Im(z) = c forms a horizontal line at y=c. All points on this line have the same imaginary part, equal to c.
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How many sides does a polygon have if the sum of the interior angles is 1980 degrees?
Answer: It has 13 sides
Step-by-step explanation:
Included in the definition of an elliptic curve is a single element denoted O and called the point at infinity or the ____ .
Answer:
Zero Point
Step-by-step explanation:
Which Expression can be used to find the distance between points A and B?
The distance between 2 endpoints on a coordinate grid can be calculated using the following formula;
\(\begin{gathered} d^2=(x_2-x_1)^2+(y_2-y_1)^2_{} \\ A(-4,2),B(8,6) \\ x1=-4,x2=8,y1=2,y2=6 \\ d^2=(8-\lbrack-4)^2+(6-2)^2 \\ d^2=(8+4)^2+(4)^2 \\ d^2=12^2+4^2 \\ d^2=144+16 \end{gathered}\)The correct answer therefore is option D;
c^2= 16 + 144
describe fully the single transformation which takes shape A to shape B.
Answer:
rotation 90° anticlockwise centre 4,3.
When f(x) = –3, what is x?
–29
–10
–3
–1
Answer:
x = - 1
Step-by-step explanation:
I hope this will help you
3(2x − 8) – 11x ......
Answer:
-5x-24
Step-by-step explanation:
3(2x-8)-11x
Use distributive property.
6x-24-11x.
Combine like terms.
6x-11x-24=-5x-24
-5x-24
Hope this helps!
If not, I am sorry.
Answer:
-5x - 24
Step-by-step explanation:
3(2x − 8) – 11x =
Distribute the 3, then combine like terms.
= 6x - 24 - 11x
= -5x - 24
let a be a symmetric matrix. suppose u is an eigenvector of a corresponding to eigenvalue 3, v is an eigenvector of a corresponding to eigenvalue 10, then u must be orthogonal to v. true or false?
Yes the statement that is assume that an is a symmetric matrix. If v and u are eigenvectors of the same matrix with eigenvalues of 3 and 10, respectively, then u must be orthogonal to v is true.
A scalar matrix is a type of diagonal matrix. Diagonal elements of a scalar matrix are equal or equal. If the elements of a scalar matrix are all ones, then it is an identity matrix.
A square matrix A = [aij]n x n is called a scalar matrix.
aij = 0 if i ≠ j
aij = k (for i = j), for some constant k
Facts about scalar matrix :
A scalar matrix is a square matrixA scalar matrix is a diagonal matrixAll identity matrices are scalar matrixEigenvectors are a special set of vectors associated with a linear system of equations
If suppose u is an eigenvector of a corresponding to eigenvalue 3, v is an eigenvector of a corresponding to eigenvalue 10, then u must be orthogonal to v .
u.v=0.
So therefore the statement is true for the given data.
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