Precalculus

please help & show all your work

Answer:60

Step-by-step explanation:

Answer:

698

Step-by-step explanation:

[tex]a_{n}[/tex] = [tex]a_{1}[/tex] + (n - 1)d

n is the term that I want.  

[tex]a_{1}[/tex] is the first term.

d is the common difference.  In this case 7.  Seven is the number that the series is increasing every term

[tex]a_{100}[/tex] = 5 + (100-1)7

[tex]a_{100}[/tex] = 5 + (99)7

[tex]a_{100}[/tex] = 5 + 693

[tex]a_{100}[/tex] = 698

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1. The surface area of the pyramid is 115 cm²

(a) The area of the four triangles is 90 cm²

(b) The area of the square is 25 cm²

(c) The total surface area of the pyramid is 115 cm².

To calculate the surface area of the pyramid, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

(a) To find the area of the 4 triangles, we use the formula below

Where:

From the diagram,

Given:

Substitute these values into equation 2

(b) To find the area of the square, we use the formula below

Where:

Substitute these values into equation

(c) To find the total surface area of the pyramid, we use the formula

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Answer: B, a counterclockwise rotation of 270 degrees about the origin.

Answer:

The sample size of an experiment can have a significant impact on the probabilities in a probability model. A larger sample size generally produces more accurate estimates of the probabilities of an event. This is because a larger sample size provides more data points that can be used to calculate the probabilities, which reduces the likelihood of random variation skewing the results.

For example, if you are conducting a coin toss experiment and flip a coin 10 times, the probability of getting heads may not be exactly 50%. However, if you flip the coin 1,000 times, the probability of getting heads will be much closer to 50% because the larger sample size reduces the impact of random variation.

Therefore, a larger sample size can lead to more realistic estimates of the probability of an event because it reduces the impact of random variation and provides more data points for analysis. However, it is also important to note that sample size alone does not guarantee accurate estimates of probability, and other factors such as selection bias and the quality of the experimental design can also affect the accuracy of the results.

Step-by-step explanation:

Answer:

17

Step-by-step explanation:

The measure of missing angles are ∠3 = 25°, ∠4 = 25°, ∠1 = 133°, ∠2 = 94°, ∠5 = 43° and ∠6 = 43°

A pοint where twο lines meet prοduces an angle.

The breadth οf the "οpening" between these twο rays is referred tο as a "angle". It is depicted by the figure.

Radians, a unit οf circularity οr rοtatiοn, and degrees are twο cοmmοn units used tο describe angles.

By cοnnecting twο rays at their ends, οne can make an angle in geοmetry. The sides οr limbs οf the angle are what are meant by these rays.

The limbs and the vertex are the twο main parts οf an angle.

We can see that

∠3 = ∠4                               ⇒ CPCT, As ΔDBA ≅ ΔDBC, SAS theorem

∠5 = ∠6                              ⇒ Isosceles triangle, thus two angles are equal

∠1 + ∠2 + 133 = 360°          ⇒ angle sum theorem

Now,

∠3 = 180 - 133 + 22

∠3 = 25°

also,

∠4 = 25°

Now,

∠1 = 133°     ⇒  CPCT

∠2 = 360 - (133 + 133)

∠2 = 94°

Now, ∠5  =  ∠6

As 180 - ∠2 = ∠5 + ∠6

180 - 94 = ∠5 + ∠6

180 - 94 = ∠5 + ∠6

86 = ∠5 + ∠6

2∠5 = 86

∠5 = 86/2

∠5 = 86/2

∠5 = 43°

∠6 = 43°

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The value of the length of the segment TM when JM is parallel to ST is 5 cm. Option B is the correct answer.

When two lines in a plane do not cross at any point, they are said to be parallel. Lines that never cross paths with one another and do not have a common junction point are said to be parallel. Lines can either be parallel or intersecting. Two lines are said to intersect when they cross at a certain location in a plane. A line is referred to as a transversal line if it crosses two or more other lines at different locations.

Given that, JM is parallel to ST.

We know that a parallel line inside the triangle divides the corresponding sides in equal ratio.

Thus,

JR/SJ = MR/TM

Substituting the values we have:

12/3 = 20/TM

TM = 20/4

TM = 5 cm

Hence, the value of the length of the segment TM when JM is parallel to ST is 5 cm. Option B is the correct answer.

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The different circumferences to go from the start to the finish are 21.98, 31.4, 37.68, and 65.94.

One of the ways of calculating the circumference is using the diameter of a circle (distance from one side to the next one) and applying the formula circumference = diameter x [tex]\pi[/tex]. Now, let's calculate the circumference.

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Answer:

  2831

Step-by-step explanation:

You want the index of the pixel at (x, y) = (15, 22) in a 128×128 array, if the pixel at (0, 0) has index 0, and the pixel at (0, 1) has index 128.

The index increase by 128 for each additional row (y-value), so the index of pixel (x, y) is ...

  i = x +128y

The index for pixel (15, 22) is ...

  i = 15 +128·22 = 15 +2816

  i = 2831 . . . . . index of pixel (15, 22)

The box and whiskers plot is made up of five points: the minimum, the first quartile (Q1), the median (Med), the third quartile (Q3), and the maximum. The minimum is the lowest value in the dataset and the maximum is the highest value in the dataset.

Median is the middle number in a set of numbers when the numbers are arranged in order from least to greatest. It is a type of measure of central tendency, which provides an indication of the “middle” value in a set of numbers. It is often used to measure the average of a set of numbers, particularly when there are extremely large or small values in the set.

The box and whiskers plot for this set of data is a visual representation of the data that makes it easier to interpret. The first quartile is the value that is 25% of the way through the dataset and the third quartile is the value that is 75% of the way through the dataset. The median is the middle value in the dataset.

To create a box and whiskers plot for this set of data, the minimum is 2, the first quartile is 4, the median is 5, the third quartile is 10, and the maximum is 14. The box and whiskers plot would then be represented by the following graph:

|                                 |

| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |

|    |    |    |    |    |    |    |    |    |    |

|  2 |  4 |  5 | 10 | 14 |

The box and whiskers plot graphically illustrates the spread of the data and allows us to easily compare the data to other datasets. It is also useful for identifying outliers in the dataset, as any value outside of the box and whiskers plot is considered an outlier.

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Hence, in response to the provided question, we can say that Hence, the solutions to the equation [tex]Ax^2 - 3x = 0 are x = 0 and x = 3/A.[/tex]

An algebraic equation is a method of connecting two quotes by using the equals symbol (=) to express equality. In algebra, an explanation is a definitive expression that verifies the equivalency of two formula. For example, the identical character divides the numbers 3x + 5 and 14. A linear equation might be used to recognize the connection that existing between the texts written on separate sides of a letter. The product and application both frequently the same. 2x - 4 equals 2, for example.

We can factor out x to get the answer to the equation Ax2 - 3x = 0.

x(Ax - 3) = 0

We can set each factor to zero and solve for x because the product of two factors is zero if and only if one or both of the factors are zero.

x = 0 or Ax - 3 = 0

If A is greater than zero, we can solve the second equation for x by adding 3 to both sides and dividing by A:

[tex]Ax-3 = 0 Ax-3 = 3 x = 3/A[/tex]

Hence, the solutions to the equation[tex]Ax^2 - 3x = 0 are x = 0 and x = 3/A.[/tex]

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The solution for the equation ax² - 3x = 0 are x = 0 and x = 3/a.

The equals sign (=), which expresses equality, is a way to join two quotes in an algebraic equation. An explanation in algebra is a conclusive phrase that confirms the similarity of two formulas. The same letter, for instance, divides the integers 3x + 5 and 14.

The relationship between the texts written on the different sides of a letter can be determined using a linear equation. Products and applications are usually interchangeable. In this case, 2x - 4 equals 2.

From the question,

We can factor out x to get the answer to the equation ax² - 3x = 0.

x (ax - 3) = 0

The product of two factors is zero if and only if one or both of the factors are zero, thus we can set each element to zero and find x.

x = 0 or ax - 3 = 0

By adding 3 to both sides and dividing by a, we may solve the second equation for x if a is greater zero:

ax = 3

⇒ x = 3/a

Therefore, the solutions of the equation are x = 0 and x = 3/a.

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Answer:

Step-by-step explanation:

The probability that the sample proportion is between 0.55 and 0.62 is 0.7962.

Probability is the measure of how likely an event is to occur out of the total number of possible outcomes. It is expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty. Probability is used to describe random events, such as the toss of a coin or the role of a die, as well as more complex events, such as the weather, stock market performance, and the success of a political candidate. A probability of 0.5, for example, means that there is a 50% chance that the event will occur.

This is calculated using the binomial probability formula, which is the probability of a certain outcome of a series of independent binary events. According to the formula, the probability of the sample proportion being between 0.55 and 0.62 is the sum of the individual binomial probabilities for each outcome within the range of 0.55 and 0.62. This is calculated as the sum of the binomial probabilities for each outcome (where p = 0.60): P(x=55) + P(x=56) + P(x=57) + P(x=58) + P(x=59) + P(x=60) + P(x=61) + P(x=62). The result is 0.7962.

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Answer:

B. F(x)=x^5

Step-by-step explanation:

Answer:

a. 13n

Step-by-step explanation:

product signifies multiplication and 13n=13xn

a. 13

There are 3/8 more white paint on the palette of the highest than the least

A line plot is a type of graph or simple data visualization tool that uses dots to represent individual data points along a numerical axis.

From the question, we have the following parameters that can be used in our computation:

The line plot

On the line plot, we have

Most white paint = 3/4

Least white paint = 3/8

Calculate the difference between both so, we have

Amount = 3/4 - 3/8

Evaluate

Amount = 3/8

Hence, the amount is 3/8

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Answer:

[tex]\huge\boxed{\sf x = 5}[/tex]

Step-by-step explanation:

Each of two equal sides = 2x + 3

Third side = 2x

Perimeter = 36

We know that,

So,

36 = 2x + 3 + 2x + 3 + 2x

36 = 2x + 2x + 2x + 3 + 3

36 - 6 = 6x

30 = 6x

30/6 = x

5 = x

OR

Now,

The length of all three sides:

= 2x + 3

= 2(5) + 3

= 10 + 3

= 13

= 2x

= 2(5)

= 10

[tex]\rule[225]{225}{2}[/tex]

B.20

18 x 17.5 equals 315.

315 divided by 15.75 equala 20.

By taking these actions, Carmen may properly plan the rail lines for the unitary method  new train station and make sure they satisfy the requirements of travellers and the local community.

The unit technique is a method of problem-solving where you first calculate the value of a single unit, then multiply that value to get the answer. Simply expressed, a single unit value is extracted from a specified multiple using the unit method. For instance, 40 pens will set you back 400 rupees, or $1.01. The method used to accomplish this might be standardised. a solitary nation. anything has a distinctive component. Mathematics of matrices or operators, linear algebra, mathematical analysis, and its adjoint and reciprocal are all equivalent.

Carmen will need to think about a number of things while planning rail lines for a new train station, including the anticipated passenger volume, the population and demography of the neighbourhood, and the available financing for development.

Last but not least, Carmen should plan the rail lines to take into account any potential for future growth in the neighbourhood. This will make it more likely that the new railway station will be able to meet the needs of passengers in the future and won't need to undergo major renovations or expansions soon after it is built.

By taking these actions, Carmen may properly plan the rail lines for the new train station and make sure they satisfy the requirements of travellers and the local community.

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The congruency statement of the line congruent to VU is: VU ≅ VY

An isosceles triangle is defined as a triangle that has two sides of equal length and its corresponding angles are equal in measure .

When two straight lines are cut by a transversal, then the angles formed on the opposite side of the transversal with respect to both the lines are called alternate angles.

Thus:

∠TWU ≅ ∠YUW

By inspection, ΔTUW is an isosceles triangle and as such UT ≅ UW.

Since ∠TWU ≅ ∠YUW, then UY is parallel to TX. Thus:

UW ≅ YX and VU ≅ VY

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Answer: The answer is 14mm

Step-by-step explanation: Area of A= 4mm times 2mm= 8mm

                                             Area of B= 3mm times 2mm= 6mm

8mm + 6mm= 14mm

How I got Area A or Area of A Is I divided the shape into two with an imaginary line

Answer:

See below.

Step-by-step explanation:

We are asked to find the area of the figure.

Let's first break the figure into 2 parts, where there is 2 rectangles.

Rectangle A has the dimensions of 4 mm to 2 mm.

Rectangle B has the dimensions of 3 mm to 2 mm.

For clarification what rectangle is which, Rectangle A is on its smallest side, and Rectangle B is on its longest side.

To find the area of the 2 rectangles we multiply the 2 dimensions given to us, then add their areas together.

[tex]A = L \times W[/tex]

Substitute:

[tex]8 = 4 \times 2 \ (Rectangle \ A)[/tex]

[tex]6 = 3 \times 2 \ (Rectangle \ B)[/tex]

Add:

[tex]6+8=14 \ (A \ and \ B)[/tex]

The area of the figure is 14 mm².

Answer:

  ∠3 = 100°

  ∠2 = ∠4 = 80°

Step-by-step explanation:

You want the measures of the four angles where lines m and n cross, given that obtuse angle 1 is 100°.

Vertical angles 1 and 3 are congruent.

  ∠3 = 100°

Adjacent angles of a linear pair are supplementary:

  ∠2 = ∠4 = 180° -100°

  ∠2 = ∠4 = 80°

__

Additional comment

Angles 2 and 4 are also vertical angles, congruent to each other.

Answer: I believe the answer would be 130°

Step-by-step explanation:

Answer:

The angle A will remain the same irrespective of their rotation so it will be 130°.

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

This is a right triangle, so the point is C(-2, -2), so 2+4=6

The net worth of the landscaping company is given by:

$187.205.

How to calculate the net worth?

The net worth of a company or of a person is given by the sum of all assets of the person subtracted by the sum of all debts of the person.

In the context of this problem, the assets, and it's values, of the company are given as follows:

Owned Inventory: $48,760.

Cash: $126,790.

Savings account: $32,436.

Owned equipment: $20,700.

Accounts receivable: $15,640.

Property value: $225,678.

Hence the sum of the assets is given by:

Assets = 48760 + 126790 + 32426 + 20700 + 15640 + 225678 = $469,994.

The debts of the company, with it's values, are given as follows:

Small Business Loan: $76,400.

Building Mortgage: $189,429.

Other debt: $16,970.

Hence the sum of the debts is given by:

Debts = 76400 + 189429 + 16970 = $282,799.

Then the net worth of the company is:

Net worth = Assets - Debt = 469,994 - 282,799 = $187,205.

After answering the presented question, we can conclude that  then used expression the fact that translations retain angle measure to conclude that the measure of angle is preserved by translations [tex]$x$ is $60^\circ$.[/tex]

In mathematics, you can multiply, divide, add, or subtract. An expression is formed as follows: Expression, number, and math operator Numbers, parameters, and functions make up a mathematical expression. It is possible to contrast phrases and expressions.

Alfred's solution appears to be partial, as some gaps remain to be filled. Here's Alfred's solution in its entirety:

"If we translate along the directed line segment[tex]$\overrightarrow{IF}$, the following will happen: Line $\overleftrightarrow{HI}$ maps onto line $\overleftrightarrow{IJ}$ and line $\overrightarrow{IF}$ maps onto line $\overrightarrow{FI}$. Therefore, the image of angle $x$ will be exactly where the pre-image of angle $GFI$ was. Since translations preserve angle measure, the measure of angle $x$ must be $\boxed{60^\circ}$."[/tex]

In summary, Alfred utilised the translation property to map the given lines and angles onto their pictures, and then used the fact that translations retain angle measure to conclude that the measure of angle is preserved by translations [tex]$x$ is $60^\circ$.[/tex]

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Answer:

Step-by-step explanation:

Fill in the blanks in Alfred's solution.

If we perform a translation along the directed line segment IF, the following will happen:

- Line HI maps onto line FG.

- Line IF maps onto itself.

Therefore, the image of angle x will be exactly where the pre-image of angle IFG was. Since translation preserve angle measure, the measure of angle x must be 60º.

The equation of the model given written in point slope form is :

Final elevation = 50 m

From given information given :

9 meter = 14.5 seconds - - - - (1)

20 meter = 42 seconds - - - - (2)

(20 - 9)meters = (42 - 14.5) seconds

11 meters = 27.5 seconds

The formula for speed is: Distance / time = 11 / 27.5 = 0.4 meters per second

The equation in point slope form can be represented thus:

The initial velocity :

At y = 9 meters ; x = 14.5 seconds ; c = initial elevation

y = 0.4x + c

9 = 0.4(14.5) + c

9 = 5.8 + c

c = 9 - 5.8

c = 3.2 m

So, the in point - slope form, the equation can be written as :Y - 9 = 0.4(x - 14.5) while the initial elevation is 3.2 m.

Full question "A railway system on a hillside moves passengers at a constant rate to an elevation of 50 m. The elevations of a train are given for 2 different locations. Write an equation in point-slope form to represent the elevation of the train in terms of time. How can the equation be used to find the rate of increase in elevation of the train in meters per second?

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Answer: (-3, 4)

Step-by-step explanation:

To find the coordinates of A’, simply subtract 3 from X (0) to represent a translation to the left, and add 4 to Y (0) to represent a translation upwards. Following this, we get (-3, 4).

Answer:

B) (-3,4)

Step-by-step explanation:

In the graph, you can see that if we move point A (0,0) three spaces to the left and 4 spaces up, it is now at the point (-3,4)

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