(u, ɸ) = ∫ 1/√x ɸ(x) dx, ɸ E D (R).
Prove u defines a distribution and calculate u' derivative in terms of distributions.

Answers

Answer 1

The derivative of u in terms of distributions.

Proof:

First, let's prove that u defines a distribution. To do this, we need to show that u is linear and continuous.
Linearity:

Let ɸ₁ and ɸ₂ be two test functions and let a and b be two scalars. Then:

u(aɸ₁ + bɸ₂) = ∫ 1/√x (aɸ₁(x) + bɸ₂(x)) dx

= a∫ 1/√x ɸ₁(x) dx + b∫ 1/√x ɸ₂(x) dx

= au(ɸ₁) + bu(ɸ₂)

Therefore, u is linear.
Continuity:

Let ɸₙ be a sequence of test functions converging to 0 in D(R). Then:

|u(ɸₙ)| = |∫ 1/√x ɸₙ(x) dx|

≤ ∫ |1/√x ɸₙ(x)| dx

≤ ∫ |1/√x| |ɸₙ(x)| dx

≤ ∫ |1/√x| ||ɸₙ||∞ dx

= ||ɸₙ||∞ ∫ |1/√x| dx

Since ɸₙ converges to 0 in D(R), ||ɸₙ||∞ → 0 as n → ∞. Also, ∫ |1/√x| dx is finite. Therefore, |u(ɸₙ)| → 0 as n → ∞, which means u is continuous.

Since u is linear and continuous, u defines a distribution.
Derivative:

Now, let's calculate the derivative of u in terms of distributions. By definition, the derivative of a distribution u is another distribution u' such that:

u'(ɸ) = -u(ɸ')

So, we need to find a distribution u' that satisfies this equation. Let's substitute the definition of u into the equation:

u'(ɸ) = -∫ 1/√x ɸ'(x) dx

Now, let's integrate by parts:

u'(ɸ) = -[1/√x ɸ(x)]∞₀ + ∫ ɸ(x) d(1/√x) dx

= -[1/√x ɸ(x)]∞₀ + ∫ ɸ(x) (-1/2x^(3/2)) dx

= ∫ (1/2x^(3/2)) ɸ(x) dx

Therefore, the derivative of u in terms of distributions is:

u'(ɸ) = ∫ (1/2x^(3/2)) ɸ(x) dx

This is the distribution that satisfies the equation u'(ɸ) = -u(ɸ').

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Related Questions

How do you find the vertex and y-intercept of a quadratic function

Answers

Answer:

The graph is a parabola that opens downward. Generally, a parabola has the following equation: y=ax2+bx+c If a is positive it opens upward

Shan used a surveying tool to map a region of land for his science class. To determine the height of a vertical rock formation, he measured the distance from the base of the formation to his position and the angle between the ground and the line of sight to the top of the formation. The distance was 43 meters, and the angle was 36°. What is the height of the formation to the nearest meter?

Answers

The height of the formation is [tex]31meter[/tex], to the nearest meter.

How is height defined?

Height, altitude, and elevation all refer to the vertical distance between something's top and bottom or its base but something above it. Height is used to describe everything that may be measured vertically, high or low.

What types of heights are there?

In essence, height relates to elevation, which is the height above a certain level. Furthermore, height refers to any quantifiable distance above a particular level as well as extend upwards (as it is from foot to head). For instance, the elevation of a tower, tree, person, mountain, etc.

We can use the tangent function to calculate the formation's height.

[tex]tan(36^{0} )=\frac{h}{3}[/tex]

Here, we have to multiply both sides by [tex]43[/tex] we get,

[tex]43tan(36^{0} )=h[/tex]

[tex]h=31meter[/tex]

Therefore, the height of the formation to the nearest meter is [tex]31meter[/tex].

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URGENT!!! A dolphin swims 665,280 feet in 3 hours. Use the formula d = rt, where d represents distance, r represents rate, and t represents time, to answer the following questions. Show your work.

Rearrange the distance formula, d = rt, to solve for time.

Answers

Answer:

Step-by-step explanation:

665,280 dived by 3 = 221760

221760 = distance

221760 = per 1 hour

I tried my best :}

Exact surface area. Radius 1 3/4 and height 3 1/4

Answers

Answer:

Surface Area = 10π

Step by step solved:

To find the exact surface area of a cylinder with a radius of 1 3/4 and height of 3 1/4, we can use the formula:

Surface Area = 2πr^2 + 2πrh

where r is the radius and h is the height.

Substituting the given values, we get:

Surface Area = 2π(1 3/4)^2 + 2π(1 3/4)(3 1/4)

First, let's simplify the terms inside the parentheses:

1 3/4 = 7/4

3 1/4 = 13/4

Now we can substitute:

Surface Area = 2π(7/4)^2 + 2π(7/4)(13/4)

Simplifying the terms inside the parentheses:

(7/4)^2 = 49/16

(7/4)(13/4) = 91/16

Substituting these values:

Surface Area = 2π(49/16) + 2π(91/16)

Simplifying the terms inside the parentheses:

(49/16)π = (7/4)π

(91/16)π = (13/4)π

Substituting these values:

Surface Area = 2(7/4)π + 2(13/4)π

Simplifying:

Surface Area = 14/4 π + 26/4 π

Surface Area = 40/4 π

Surface Area = 10π

Therefore, the exact surface area of the cylinder is 10π square units.

given a line and a point not on the line , find a plane
containing the point and parallel to the given line
Geometry

Answers

To find a plane containing a point P not on a given line l and parallel to l, we can follow these steps:

Choose any point Q on the line l.

Find the vector v that connects point Q to point P, i.e., v = P - Q.

Find the direction vector d of the line l.

Take the cross product of the direction vector d and the vector v, denoted by d x v.

The plane that contains point P and is parallel to line l can be represented by the equation ax + by + cz = d, where (a, b, c) is the vector d x v, and x, y, and z are the coordinates of any point on the plane.

Here's an example to illustrate the process:

Let's say we have a line l that passes through points A(1, 2, 3) and B(4, 5, 6), and a point P(7, 8, 9) not on the line. We want to find a plane containing point P and parallel to line l.

Choose any point Q on the line l. Let's choose Q(1, 2, 3) for convenience.

Find the vector v that connects point Q to point P: v = P - Q = (7-1, 8-2, 9-3) = (6, 6, 6).

Find the direction vector d of the line l: d = (4-1, 5-2, 6-3) = (3, 3, 3).

Take the cross product of the direction vector d and the vector v: d x v = <3, 3, 3> x <6, 6, 6> = <0, 18, -18>.

Write the equation of the plane: 0x + 18y - 18z = d. Since the plane is parallel to line l, we know that the coefficients of x, y, and z are all 0, except for the coefficients of y and z, which are the components of the vector d x v. Therefore, the equation simplifies to 18y - 18z = 0, or y - z = 0.

So the plane containing point P(7, 8, 9) and parallel to the line passing through points A(1, 2, 3) and B(4, 5, 6) can be represented by the equation y - z = 0.

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Triangle JKL is dilated by a scale factor of
2
2 to form triangle J'K'L'. What is the measure of side L'J'?

Answers

Step-by-step explanation:

If triangle JKL is dilated by a scale factor of 2, this means that all sides of triangle JKL are multiplied by 2 to form triangle J'K'L'.

Therefore, if the measure of side LJ is x, then the measure of side LJ' is 2x. Similarly, if the measure of side LK is y, then the measure of side L'K' is 2y.

To find the measure of side L'J', we can use the fact that the sum of the measures of the angles in any triangle is always 180 degrees.

In triangle JKL, the sum of the measures of angles J, K, and L is 180 degrees. This means that angle JKL is:

angle JKL = 180 - angle J - angle K

Since triangle JKL is dilated by a scale factor of 2, the corresponding angles in triangle J'K'L' are congruent to the angles in triangle JKL. Therefore, angle J'K'L' is also:

angle J'K'L' = 180 - angle J - angle K

Since angle J'K'L' is a straight line (180 degrees), we can find angle J'L'K' by subtracting angles J'K'L' and J'KL':

angle J'L'K' = angle J'KL' - angle J'K'L' = angle JKL - angle J'K'L'

Using the fact that corresponding angles in similar triangles are congruent, we have:

angle J'KL' = angle JKL

angle L'K'J' = angle LKJ

Therefore, angle J'L'K' is:

angle J'L'K' = angle JKL - angle J'K'L' = angle JKL - angle LKJ

Since triangle JKL is a triangle, we know that angle JKL + angle LKJ + angle LJK = 180 degrees. Therefore, we can rewrite the equation for angle J'L'K' as:

angle J'L'K' = (angle JKL + angle LKJ + angle LJK) - 2(angle JKL + angle LKJ)

Simplifying this equation, we get:

angle J'L'K' = angle LJK - angle JKL

Using the fact that corresponding angles in similar triangles are congruent, we have:

angle L'J'K' = angle LJK

angle J'L'K' = angle JKL

Therefore, triangle J'L'K' is similar to triangle JKL, and we can write the ratio of corresponding side lengths as:

L'J' / LJ = K'L' / KL

Since triangle JKL is dilated by a scale factor of 2, we have:

K'L' = 2LK

L'J' / LJ = 2L'K' / LK

Substituting L'K' = 2LK, we get:

L'J' / LJ = 4

Therefore, the measure of side L'J' is four times the measure of side LJ. If the measure of side LJ is x, then the measure of side L'J' is 4x.

Final answer:

The measure of side L'J' in the dilated triangle J'K'L' can be found by multiplying the length of the corresponding side in the original triangle by the scale factor of 2.

Explanation:

In the field of Mathematics, specifically geometry, a dilation is a transformation that alters the size of a figure without changing its shape. If Triangle JKL is dilated by a scale factor of 2 to form Triangle J'K'L', every dimension of Triangle JKL is multiplied by this scale factor to get the corresponding dimension in Triangle J'K'L'.

Therefore, if you want to determine the measure of side L'J' in the new triangle, we need to know the length of the corresponding side in the original triangle (which is LJ). You would then multiply this length by the scale factor. The result would give you the length of side L'J'.

For example, if the length of side LJ in the original triangle is 4 units, the length of the corresponding side L'J' in the dilated triangle would be 4 * 2 = 8 units.

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Victor makes cinnamon waffles. His recipe calls for 3 teaspoons of cinnamon per 8 teaspoons of sugar. How many teaspoons of sugar are needed for 96 teaspoons of cinnamon?

Answers

Answer:

He needs 256 teaspoons of sugar.

Step-by-step explanation:

This one is really simple!
96/3 = 32, meaning that we multiplied the recipe by 32.
This means that your teaspoons of sugar must also be multiplied by 32, which 8x32=256!

Help me giving brainliest

Answers

Answer:

277

Step-by-step explanation:

Just add lol

If G is the midpoint of segment AB, classify each triangle by its angles and sides.

Answers

So, with one acute angle measuring 23.58 degrees and another acute Pythagorean theorem angle measuring 66.42 degrees, we may define this triangle as a right triangle.

what is Pythagorean theorem?

The fundamental Euclidean geometry relationship between the three sides of a right triangle is the Pythagorean Theorem, sometimes referred to as the Pythagorean Theorem. This rule states that the areas of squares with the other two sides added together equal the area of the square with the hypotenuse side. According to the Pythagorean Theorem, the square that spans the hypotenuse (the side that is opposite the right angle) of a right triangle equals the sum of the squares that span its sides. It may also be expressed using the standard algebraic notation, a2 + b2 = c2.  

A triangle with the vertices A, B, and C with sides measuring 5, 12, and 13 units is seen in the illustration.

Let's use our triangle to illustrate this theorem:

[tex]a = 5, b = 12, c = 13\\a^2 + b^2 = 25 + 144 = 169\sc \\a^2 = 13^2 = 169\\[/tex]

Our triangle complies with the Pythagorean theorem because a2 + b2 = c2. Triangle ABC is a right triangle as a result, and the side with the length 13 is opposite the right angle.

[tex]A = arcsin(5/13)[/tex] = 23.58 degrees when sin(A)

= opposite/hypotenuse

= 5/13 A.

[tex]arccos(12/13) = 66.42 degrees B = cos(A) = adjacent/hypotenuse = 12/13[/tex]

A, B, and C are all at 90 degrees.

So, with one acute angle measuring 23.58 degrees and another acute angle measuring 66.42 degrees, we may define this triangle as a right triangle.

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For the given polynomial, first simplify, if possi trinomial, or none of these. 3m^(7)-9m^(5)+2m^(7)-4m^(6)

Answers

The final polynomial after simplifying 3m^(7)-9m^(5)+2m^(7)-4m^(6)  is   5m⁷-9m⁵-4m⁶.

To simplify the given polynomial, we need to combine like terms. Like terms are terms that have the same variable and exponent.

The given polynomial is: 3m⁷-9m⁵+2m⁷-4m⁶

First, let's identify the like terms:
- 3m⁷ and 2m⁷ are like terms
- -9m⁵ and -4m⁶ are not like terms because they have different exponents

Next, let's combine the like terms:
- 3m⁷ + 2m⁷ = 5m⁷

So, the simplified polynomial is: 5m⁷-9m⁵-4m⁶

This polynomial cannot be further simplified, so it is none of the options listed (binomial, trinomial, or none of these).

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Proc. A raw norm. time time Proc. B raw norm. time time Proc. C raw norm. time time Benchmark P1 P2 P3 P4 P5 300 1200 600 300 60 000 1 1 1 1 1 600 300 1200 1200 120 000 2.00 0.25 2.00 4.00 2.00 1200 600 300 600 30 000 4.00 0.50 0.50 2.00 0.50 A.2.1 Consider the first 3 benchmark programs (P1 to P3) only in this part. For each processor, compute the following: (i) Arithmetic mean of raw CPU time of the benchmark programs; (ii) Geometric mean of raw CPU time of the benchmark programs; (iii) Arithmetic mean of normalized CPU time of the benchmark programs; (iv) Geometric mean of normalized CPU time of the benchmark programs; (v) Total raw CPU time; (vi) Total normalized CPU time; Hint: You may want to use a spredsheet program to help you in this and the following parts of this question.

Answers

To compute the arithmetic mean of raw CPU time of the benchmark programs, we need to add the raw CPU time of the first 3 benchmark programs (P1 to P3) for each processor and divide the result by 3. Similarly, to compute the geometric mean of raw CPU time of the benchmark programs, we need to multiply the raw CPU time of the first 3 benchmark programs (P1 to P3) for each processor and take the cube root of the result. The same applies to the arithmetic mean and geometric mean of normalized CPU time of the benchmark programs. The total raw CPU time and total normalized CPU time are simply the sum of the raw CPU time and normalized CPU time of the first 3 benchmark programs (P1 to P3) for each processor, respectively.

Using a spreadsheet program, we can compute the following:

(i) Arithmetic mean of raw CPU time of the benchmark programs:
- Proc. A: (300 + 1200 + 600) / 3 = 700
- Proc. B: (600 + 300 + 1200) / 3 = 700
- Proc. C: (1200 + 600 + 300) / 3 = 700

(ii) Geometric mean of raw CPU time of the benchmark programs:
- Proc. A: (300 * 1200 * 600)^(1/3) = 600
- Proc. B: (600 * 300 * 1200)^(1/3) = 600
- Proc. C: (1200 * 600 * 300)^(1/3) = 600

(iii) Arithmetic mean of normalized CPU time of the benchmark programs:
- Proc. A: (1 + 1 + 1) / 3 = 1
- Proc. B: (2 + 0.25 + 2) / 3 = 1.4167
- Proc. C: (4 + 0.5 + 0.5) / 3 = 1.6667

(iv) Geometric mean of normalized CPU time of the benchmark programs:
- Proc. A: (1 * 1 * 1)^(1/3) = 1
- Proc. B: (2 * 0.25 * 2)^(1/3) = 1
- Proc. C: (4 * 0.5 * 0.5)^(1/3) = 1

(v) Total raw CPU time:
- Proc. A: 300 + 1200 + 600 = 2100
- Proc. B: 600 + 300 + 1200 = 2100
- Proc. C: 1200 + 600 + 300 = 2100

(vi) Total normalized CPU time:
- Proc. A: 1 + 1 + 1 = 3
- Proc. B: 2 + 0.25 + 2 = 4.25
- Proc. C: 4 + 0.5 + 0.5 = 5

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Suppose you own a large grocery store and are trying to save money by controlling
your inventory costs for beans, which you order by the whole case. Each year you
order a total of 675 cases. Suppose that you know that your yearly inventory cost
if you order Q cases of beans at a time is given by , where C is
yearly inventory cost measured in dollars.
a) What is your yearly inventory cost if you order one case at a time? Explain in
context what your answer means.
b) How many cases should you order at a time to minimize your annual inventory
cost? [Be sure to provide evidence supporting your answer.]
c) How much money will you save each year by ordering based on your answer to
part b) instead of ordering one case at a time?
d) When you are minimizing your annual inventory cost as in part b), about how
often should you place your orders? [Be sure to provide evidence supporting

Answers

675 cases divided by 135 cases per order equals five orders each year

a) If you order one case at a time, your yearly inventory cost is $6,750. This means that if you order one case of beans each year, it will cost you a total of $6,750.



b) To minimize your annual inventory cost, you should order 135 cases at a time. This is the number of cases that produces the minimum value for the cost equation, C = 200Q + 5,750.



c) By ordering 135 cases at a time instead of one, you will save $3,750 each year in inventory costs.



d) When you are minimizing your annual inventory cost, you should place your orders every five years. This is because 675 cases divided by 135 cases per order equals five orders each year.

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HELP PLEASE Roberto needs 6 feet and 8 inches of lumber to repair the deck. He has 54 inches of lumber. How many more inches of lumber does he need?

134 inches
80 inches
26 inches
18 inches

Answers

Therefore, Roberto needs 26 more inches of lumber. Answer: 26 inches.

How does this simple equation translate?

an explanation of the relationship between the two phrases on either side of a sign. A single variable and an equal sign are typically present. It is equivalent to this 2. 2x - 4 Equals 2. The variable x is present in the earlier instance.

To solve this problem, we need to convert all the measurements to the same units. Let's convert 6 feet and 8 inches to inches:

6 feet = 6 x 12 inches = 72 inches

6 feet and 8 inches = 72 + 8 = 80 inches

So Roberto needs 80 inches of lumber to repair the deck.

He has 54 inches of lumber, so he needs:

80 - 54 = 26 inches

Therefore, Roberto needs 26 more inches of lumber. Answer: 26 inches.

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The gas mileages​ (in miles per​ gallon) for 26 cars are shown in the frequency distribution. Approximate the mean of the frequency distribution. *Will give brainliest*

Answers

The required mean of the given frequency table is 6.

What is mean?

There are various mean types in mathematics, particularly in statistics.

Each mean helps to summarize a certain set of data, frequently to help determine the overall significance of a specific data set.

For instance, the mean for the collection of values 8, 9, 5, 6, and 7 is 7, since 8 + 9 + 5 + 6 + 7 = 35, and 35/5 = 7.

So, to find the mean:

First, arrange the terms in ascending order as follows:

1, 4, 8, 13

Now, add the middle two numbers and divide by 2 to get the mean:

= 4 + 8/2

= 12/2

= 6

Therefore, the required mean of the given frequency table is 6.

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t \( \vec{u}=\left[\begin{array}{c}1 \\ -3 \\ 2\end{array}\right] \) and \( \vec{v}=\left[\begin{array}{c}2 \\ 0 \\ -1\end{array}\right] \) Compute the cross product: \[ \vec{u} \times \vec{v}=\left[\

Answers

1 & -3 & 2
2 & 0 & -1

The cross product of two vectors can be calculated using the formula:
\[ \vec{u} \times \vec{v} = \left[ \begin{array}{ccc}
\vec{i} & \vec{j} & \vec{k}\\
u_{1} & u_{2} & u_{3} \\
v_{1} & v_{2} & v_{3}
\end{array} \right] \]

For your given vectors, we can calculate the cross product as follows:
\[ \vec{u} \times \vec{v} = \left[ \begin{array}{ccc}
\vec{i} & \vec{j} & \vec{k}\\
1 & -3 & 2 \\
2 & 0 & -1
\end{array} \right] \]

Which simplifies to:
\[ \vec{u} \times \vec{v} = \left[ \begin{array}{c} 6 \\ 2 \\ -1 \end{array} \right] \]

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Someone remind me what is the rule for reflecting both x and y on a coordinate plane when you reflect on the x do you change the y or and on the y do you change the x and how would this work on negative example:( -x,y ) and ( x,-y ) *can you show me how to do that using reflection on both x and y* much appreciated (middle school math i don’t why it’s says high school)

Answers

Therefore, for the first  coordinate point (-x, y), the ultimate reflected points are (-x, -y) and (-x, -y), and for the second point, they are (x, -y) and (-x, -y) .

Describe coordinate plane.

A coordinate system is a technique used to precisely find points or additional mathematical objects on a distance, such as Euclidean space, by using one or so more values or coordinates. To find a point or item on a double plane, one uses coordinates, which are pairs of numbers. Two numbers called the y and x matrices are used to describe a point's location on a two-dimensional plane. a set of numbers used to identify specific locations.

Here,

The x-coordinate remains constant and the y-coordinate is cancelled when a point on the coordinate plane is reflected over the x-axis (i.e. multiplied by -1). The y-coordinate remains constant and the x-coordinate is cancelled when a point is reflected over the y-axis.

Let's mirror the point (-2, 3) first over the x-axis and then over the y-axis as an illustration:

The x-coordinate remains constant while the y-coordinate is cancelled when reflecting over the x-axis. In light of this, the argument is (-2, -3).

The x-coordinate is cancelled while the y-coordinate remains constant when reflecting over the y-axis. In light of this, the argument is (2, -3).

We can reflect the coordinates (-x, y) and (x, -y) over the x-axis and then over the y-axis:

Therefore, for the first point (-x, y), the ultimate reflected points are

(-x, -y) and (-x, -y), and for the second point, they are (x, -y) and (-x, -y) .

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Given (x – 7)2 = 36, select the values of x.
x = 13
x = 1
x = –29
x = 42

Answers

The values of x in the given equation, (x-7)^2=36, are x = 13 and x = 1. The correct options are the first and second options - x = 13 and x = 1

Quadratic equation: Calculating the value of x

From the question, we are to determine the values of x in the given equation. The given equation is:

(x-7)^2=36

To solve the equation (x-7)^2=36, we can take the square root of both sides and solve for x:

(x-7)^2 = 36

Taking the square root of both sides:

x - 7 = ±6

Adding 7 to both sides:

x = 7 ± 6

So we get two possible values of x:

x = 7 + 6 or x = 7 - 6

x = 13 or x = 1

Hence, the correct values of x are:

x = 13

x = 1

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what time is 4 hours and 47 mins before 3.08pm

Answers

Answer:

10:21 AM

Step-by-step explanation:

To get the answer you subtract 4 hours and 47 mins from 3:08 pm

4 hours and 47 minutes before 3:08 pm is 10:21 am.

What is an expression?

An expression contains one or more terms with addition, subtraction, multiplication, and division.

We always combine the like terms in an expression when we simplify.

We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.

Example:

1 + 3x + 4y = 7 is an expression.com

3 + 4 is an expression.

2 x 4 + 6 x 7 – 9 is an expression.

33 + 77 – 88 is an expression.

We have,

To find the time 4 hours and 47 minutes before 3:08 pm, we can subtract 4 hours and 47 minutes from 3:08 pm.

First, let's convert 3:08 pm to 24-hour format:

3:08 pm = 15:08

Now we can subtract 4 hours and 47 minutes:

15:08 - 4:47 = 10:21

Therefore,

4 hours and 47 minutes before 3:08 pm is 10:21 am.

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URGENT PLEASE PLEASE ANSWER THIS QUESTION PLEASE IM BEGGING ANYONE ILL GIVE YOU BRAINLIEST.

Answers

Answer: Last one

Step-by-step explanation:

please help me I am solving sequences of algebra 1

Answers

The value of a₄ is,

⇒ a₄ = 108

What is mean by Multiplication?

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that;

The value is,

⇒ a₁ = - 4

And, [tex]a_{n} = - 3a_{n - 1}[/tex]

Now, We can put n = 2;

⇒ a₂ = - 3 a₁

⇒ a₂ = - 3 x - 4

⇒ a₂ = 12

Put n = 3;

⇒ a₃ = - 3 a₂

⇒ a₃ = - 3 x 12

⇒ a₃ = - 36

Put n = 4;

⇒ a₄ = - 3 a₃

⇒ a₄ = - 3 x - 36

⇒ a₄ = 108

Thus, The value of a₄ is,

⇒ a₄ = 108

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Value of a₄ in sequence is -108.

What is geometric sequence?

In mathematics, geometric sequence, also known as a a geometric progression, is a sequence of non-zero numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio.

Given,

a₁ = 4 and aₙ = -3aₙ₋₁

a₂ = -3a₂₋₁

a₂ = -3a₁

a₂ = -3(4)

a₂ = -12

a₃ =  -3(-12)

a₃ = 36

a₄ = -3a₄₋₁

a₄ = -3a₃

a₄ = -3(36)

a₄ = -108

Hence, -108 is value of a₄ of the sequence.

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Help me please it would mean a lot

Answers

Answer:

2. f(t) = 25^(t+1)

Step-by-step explanation:

25 = 25^1

=> 25^(0+1)

15,625 = 25^3

=> 25^(2+1)

9,765,625 = 25^5

=> 25^(4+1)

So f(t) = 25^(t+1)

the pythagorean theorem, Please this is due tmrw i need help asap. 76 points and i will mark you as brainliest!!!

Answers

The value of the missing sides using Pythagorean theorem are;

1.  15. 81m

2. 24. 08cm

3. 12. 85 ft

4. 4. 58 in

5. 27. 02 yd

6.  18. 14 mm

7. 16. 58 km

8. 6. 24m

9. 9. 85 miles

10. 14.14 feet

11. 14.14 feet

12. 13. 78  feet

How to determine the value of the sides

Using the Pythagorean theorem, which states that the square of the longest side of a triangle which is the hypotenuse leg is the sum of the squares of the other two sides of the triangle, that is, the opposite and adjacent.

Then, we have;

x² = y² + z²

Where the parameters are;

x is the hypotenuse sidey is the opposite sidez is the adjacent side

From the figures shown, we have that;

1. Adjacent side = 8m

Opposite side = 9m

Using the Pythagorean theorem, we have;

x² = 13² + 9²

Find the squares and substitute

x² = 169 + 81

x² = 250

find the square root

x =√250 = 15. 81m

2. For the triangle, we have;

x² = 16² + 18²

x² = 256 + 324

x = √580 = 24. 08cm

3. For the third triangle:

y² = 19² - 14²

y² = 361 -196

y = √165 = 12. 85 ft

4. For the fourth triangle

z² = 11² - 10²

z² = 121 - 100

z = √21 = 4. 58 in

5. x² = 21² + 17²

x² = 441 + 289

x = 27. 02 yd

6. z² = 27² - 20²

z² = 729 - 400

z = √329 = 18. 14 mm

7. z² = 30² - 25²

Find the squares

z² = 900 - 625

z² = 275

z = √275 = 16. 58 km

8. y² = 8² - 5²

find the squares

y² = 64 - 25

y = √39 = 6. 24m

9. x² = 9² + 4²

Find the squares

x² = 81 + 16

x = √97 = 9. 85 miles

10. Length of the diagonal is the hypotenuse side

x² = 10² + 10²

x² = 100 + 100

x = √200 = 14.14 feet

11. The height of the pole is the opposite side

y² = 15² - 5²

y² = 225 -25

y = √200 = 14. 14 feet

12. the height of the pole is the opposite side

y² = 14² - 4²

y² = 196 - 16

y = √190 = 13. 78  feet

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Find the final amount for an investment of $5,000 over 5 years at an annual interest rate of 6% if the interest is compounded quarterly.

Answers

The total amount for an  of $5,000 over 5 years at an annual interest rate of 6% if the interest is compounded quarterly is $5386.42.

What is interest rate in mathematics?

Interest is the amount a lender or financial institution receives for lending money. Interest can also refer to a shareholder's ownership interest in a company and is usually expressed as a percentage.

Interest rate indicates the cost of borrowing or the reward for saving. Therefore, if you are a borrower, interest rate is the amount charged to borrow money, expressed as a percentage of the total loan amount.  

Solution according to the information given in the question :

Given, Principal(P) = $5,000

           Compounding per year(n) = 4

          Time(in years)(T) = 5

          Interest rate = 6%

Amount = P× (1 + r/n)^t

             = 5000 × (1 + 6/4×100)⁵

            = 5000 × (1.015)⁵

            = 5000 ×1.07

            = $5286.42

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I need help with pre calc

Answers

The trigonometric equation [tex]\frac{2tanx}{1+tan^2x}[/tex] is equivalent to sin2x

What is an equation?

An equation is an expression that shows how numbers and variables are related using mathematical operators like exponent, addition, multiplication, subtraction and division.

Trigonometric identity is used to show relationship between trigonometric functions. Some examples are:

1 + tan²x = 1/cos²x; tanx = cosx/sinx; sin2x = 2sinxcosx

Given:

[tex]\frac{2tanx}{1+tan^2x} \\\\but\ 1+tan^2x=\frac{1}{cos^2x};substituting:\\ \\= \frac{2tanx}{\frac{1}{cos^2x} } \\\\=2tanx*cos^2x\\\\=2*\frac{sinx}{cosx}*cos^2x\\ \\=2sinxcosx[/tex]

= sin2x

The trigonometric equation are equivalent.

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help me solve this homework

Answers

The correct answer to the listed problems above in their correct scientific notation would be :

1.) 76,450,000 =7.645×10⁷

2.) 0.000327 = 3.27 × 10^-4

3.) 34,000 = 2.4 × 10⁴

4.) 116,000,000,000, = 1.16 × 10¹¹

5.) 0.024= 2.4× 10^-2

6.) 2,800= 2.8× 10³

7.) 100= 1 × 10²

8.) 0.00000qq= q.q × 10^-6

9.) q00,000= q × 10⁵

10.) 0.00633= 6.33 × 10^-3

How to determine the scientific notation of a value?

Scientific notation is defined as a form that can be used to represent cumbersome numbers or very small numbers in a way that is most convenient.

The correct scientific notation of the given values are listed below with reasons:

1.) 76,450,000 =7.645×10⁷ and not =7.645×10⁸ when the decimal point is moved so that there is 1 non-zero value in front of the decimal point, the number of zero is 8 not 7.

2.) 0.000327 = 3.27 × 10^-4 and not 3.27 × 10⁴ as the value is less than 1.

3.) 34,000 = 3.4 × 10⁴. Correctly written.

4.) 116,000,000,000, = 1.16 × 10¹¹. Should be 11 not q.

5.) 0.024= 2.4× 10^-2 and not 24 × 10^-2

6.) 2,800= 2.8× 10³. Correctly written.

7.) 100= 1 × 10² and not 1 × 10³

8.) 0.00000qq= q.q × 10^-6. Correctly written.

9.) q00,000= q × 10⁵ and not q × 10^-5

10.) 0.00633= 6.33 × 10^-3 and not 63.3 × 10^-3. This is because the decimal point should be placed immediate after the first whole number.

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Zachary earned scores of 20, 25, 22, 18, and 24 on his last five math quizzes. What score will he need to earn on the sixth quiz in order to have a mean score of 22?

Answers

Zachary will need to earn a score of 23 on his sixth quiz to have a mean score of 22 for all six quizzes.

How to determine his possible score

To find out what score Zachary needs to earn on his sixth quiz to have a mean score of 22,

We need to use the formula for the mean (or average) of a set of numbers:

Mean = (sum of all the scores) / (number of tests)

Zachary's mean score for the first five quizzes is 22.

Using the above as a guide, we have the following:

(20 + 25 + 22 + 18 + 24 + x) / 6 = 22

Evaluate the like terms

(109 + x) / 6 = 22

So, we have

109 + x = 132

Evaluate the like terms

x = 23

Hence, the score must be 23

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Find the monthly payment on a 30-year, $100,000 mortgage if the
interest rate is 6 percent. hundred.

Answers

The monthly payment on a 30-year, $100,000 mortgage with an interest rate of 6 percent is $599.55.

To find the monthly payment on a 30-year, $100,000 mortgage with an interest rate of 6 percent, we need to use the following formula:

Monthly Payment = (Loan Amount * Interest Rate) / (1 - (1 + Interest Rate)^(-Number of Payments))

First, we need to convert the interest rate from a percentage to a decimal by dividing it by 100:

Interest Rate = 6 / 100 = 0.06

Next, we need to calculate the number of payments over the life of the loan. Since there are 12 months in a year, and the loan is for 30 years, the number of payments is:

Number of Payments = 12 * 30 = 360

Now we can plug these values into the formula:

Monthly Payment = ($100,000 * 0.06) / (1 - (1 + 0.06)^(-360)) = $599.55

Therefore, A $100,000 mortgage with a 30 year term and a 6% interest rate has a $599.55 monthly payment.

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Scarlett bought a pair of shoes online for $49. She used a coupon code to get a 10%
discount. The website also applied a 10% processing fee to the price after the
discount. How much did Scarlett pay, in the end? Round to the nearest cent.

Answers

Answer:

Scarlett paid $48.51

Step-by-step explanation:

The initial price of the shoes was $49. After using a 10% discount coupon, the price is reduced by $4.90 ($49 x 0.1). Therefore, the price after the discount is $44.10 ($49 - $4.90).


Then, a 10% processing fee is applied to this discounted price. This fee amounts to $4.41 ($44.10 x 0.1).


So the final amount Scarlett paid is the sum of the discounted price and the processing fee:

$44.10 + $4.41 = $48.51


Therefore, Scarlett paid $48.51 for the shoes in the end.

Anna wants to create a miniature version of her dog. She will create it using the scale .25 inch = 1 foot. If her dog is 2.5 feet tall, how tall will her miniature version be?

Answers

Answer:

If 0.25 inch represents 1 foot, then 1 inch represents 4 feet (since 4 x 0.25 = 1).

Therefore, the height of the miniature dog in inches will be:

2.5 feet x 4 = 10 inches

So, the miniature version will be 10 inches tall.

Answer:

Her dog will be 5/8 of an inch tall. You would add 1/4 and 1/4 which equals 2/4. Then, you would split 1/4  = 1 in half so, 1/8 = 0.5

Add 1/8 to 2/4 to get 5/8

Step-by-step explanation:

Jack is ten years older than Anna. Seven years from now Jack will be twice as old as Anna. How old is Jack now?

Answers

Jack is 13 years old now.

To solve this problem, we can use algebra to set up an equation and solve for Jack's age. Let's let J represent Jack's age now, and A represent Anna's age now.

According to the problem, Jack is ten years older than Anna, so we can write:
J = A + 10

Seven years from now, Jack will be twice as old as Anna, so we can write:
J + 7 = 2(A + 7)

Now we can substitute the first equation into the second equation to solve for A:
A + 10 + 7 = 2(A + 7)
A + 17 = 2A + 14
A = 3

Now that we know Anna's age, we can plug it back into the first equation to find Jack's age:
J = 3 + 10
J = 13

So Jack is 13 years old now.

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