I need help please help

The value of the car went down by an average of $1,725 each year over the six-year period.

Depreciation is the loss in value of an asset due to factors such as age, wear and tear, market conditions, and obsolescence. It is usually calculated on a linear basis, meaning that the same amount of depreciation is spread evenly over a period of time.

In this case, the car was purchased for $22,995, and six years later it was worth $12,645.

To calculate the linear depreciation of the car, we need to subtract the value at the end of the period from the value at the beginning, and divide by the number of years:

Depreciation = ($22,995 - $12,645) / 6

Depreciation = $1,725

This means that the car depreciated by an average of $1,725 each year. In other words, the value of the car went down by an average of $1,725 each year over the six-year period.

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The quotient is [tex]4x^2[/tex] and the remainder is [tex]3x^2 - x + 5[/tex].

Long division is a mathematical method used to divide one number by another. It is typically used for division of larger numbers, and is taught as a basic arithmetic skill in elementary and middle school.

In long division, the dividend (the number being divided) is written on the top, and the divisor (the number dividing the dividend) is written on the left. The quotient (the answer to the division problem) is written on the top of the line below the dividend, with the remainder (the left-over amount after division) written on the right.

The process involves a series of steps, including dividing, multiplying, and subtracting. The steps are repeated until the dividend is fully divided, or until a specified level of precision is reached.

Long division is also used to divide polynomials, by using the coefficients of the terms in the polynomial instead of the actual numbers. This process is similar to long division of numbers, but involves additional steps to ensure that the division is performed correctly.

Now We want to divide the polynomial [tex]4x^4 - 5x^3 + 2x^2 - x + 5[/tex] by the polynomial [tex]x^2 + x + 1[/tex] using long division.

[tex]x^2 + x + 1 |[/tex] ([tex]4x^4 - 5x^3 + 2x^2 - x + 5[/tex] )

First, we divide the highest degree term of the dividend, [tex]4x^4[/tex], by the highest degree term of the divisor, [tex]x^2[/tex], to get [tex]4x^2[/tex] :

[tex]x^2 + x + 1 | 4x^4 - 5x^3 + 2x^2 - x + 5\\-4x^4 - 4x^3 - 4x^2\\-----------------------------\\x^3 + 2x^2[/tex]

Next, we multiply the divisor,[tex]x^2 + x + 1[/tex], by the quotient, [tex]4x^2[/tex], to get [tex]4x^4 + 4x^3 + 4x^2[/tex], and subtract it from the dividend:

[tex]x^2 + x + 1 | 4x^4 - 5x^3 + 2x^2 - x + 5\\-4x^4 - 4x^3 - 4x^2\\----------\\x^3 + 2x^2\\- 4x^2 - 4x - 4\\-------\\3x^2 - x + 5[/tex]

We now have a new polynomial, 3[tex]x^2 - x + 5[/tex], as the remainder. Since the degree of the remainder is less than the degree of the divisor, the division process is complete.

Therefore, the quotient is [tex]4x^2[/tex] and the remainder is [tex]3x^2 - x + 5[/tex]. We can write the original polynomial as:

[tex]4x^4 - 5x^3 + 2x^2 - x + 5 = (x^2 + x + 1)(4x^2) + (3x^2 - x + 5)[/tex]

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The number of employees for a certain company has been decreasing each year by 8%. If the company cumenty has 720 employees and this rate continues, find the number of employees in 10 years.

The number of employees in 10 years will be approximately

Round to the nearest whole number as needed)

Answer:

x = 2.4

Step-by-step explanation:

4x + 5 / x + 7
combine like terms

X + 4x = 5x

5 + 7= 12

12/ 5x

Divide

12 /5= 2.4

X= 2.4

Answer:

100

Step-by-step explanation:

We can estimate 485% as 500%. We know that 500% is equal to 5.

Therefore,

20 × 500%

= 20 × 5

= 100

Answer:

A

Step-by-step explanation:

It is a double angle identity.

sin2x = 2sinxcosx

Answer: 2sinxcosx

Step-by-step explanation:

Answer:

There were 480 customers on Friday.

To calculate the increase from Thursday to Friday, we can use the following formula:

```

Increase = (percent increase / 100) * starting value

```

In this case, the percent increase is 1/5, and the starting value is 400 customers. So, the increase is:

```

Increase = (1/5 / 100) * 400 = 8

```

This means that there were 8 more customers on Friday than there were on Thursday. So, the total number of customers on Friday is:

```

Total = Starting value + Increase

= 400 + 8

= 480

```

Step-by-step explanation:

The number line where we plotted -1 1/6 and 17/6 is added as an attachment

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

-1 1/6 and 17/6

To start with, we convert both numbers to the same form

i.e. decimal or fraction

When converted to fractions, we have

-7/6 and 17/6

This means that we can plot -7/6 at -7 and 17/6 at point 17 where the difference in each interval is 1/6

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

The number line is attached

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If the small "coffee-shop" owner is trying to determine the preference of her customers by conducting a survey among a group of customers who visit the shop during a specific time frame, then this group would be a sample rather than a population.

A "Sample" is defined as a subset of the population that is selected to represent the entire population. In this case, the owner is trying to determine the preference of her customers by surveying a specific group of customers.

So, this group of customers is a sample of the population of all customers who visit the coffee shop.

To obtain meaningful results from the survey, the sample should be selected randomly and should be representative of the population. The results obtained from the sample could then be used to make inferences about the preferences of the entire population of customers who visit the coffee shop.

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The given question is incomplete, the complete question is

A small coffee shop owner wants to know which brand of coffee her customers prefer.

Is the data considered a "population" or "sample", Explain?

The equation of the line through the points is 7y = -2x - 15.

The equation of a line that passes through two given points is calculated as follows;

y - y1 = m(x - x1)

Where;

The slope is calculated as;

m = (y2 - y1) / (x2 - x1)

m = (-3 + 1) / (3 + 4)

m = -2/7

The equation of the line is calculated as;

y - y1 = m(x - x1)

y - (-1) = (-2/7)(x - (-4))

y + 1 = (-2/7)(x + 4)

y + 1 = (-2/7)x - (8/7)

y = (-2/7)x - (15/7)

7y = -2x - 15

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Answer:

The common ratio of this geometric sequence is -1/2, so we have

a(7) = 16 × -1/2 = -8, a(8) = -8 × -1/2 = 4.

Dividing by -1/2 is the same as multiplying by -2. Working backwards, we have:

a(5) = -2 × 16 = -32

a(4) = -2 × -32 = 64

a(3) = -2 × 64 = -128

a(2) = -2 × -128 = 256

a(1) = -2 × 256 = -512

Answer:

Step-by-step explanation:

Sector area is a portion of the circle's area.

formula is π r² × x/360°

where x is the central angle.

For example if the radius is 9 and the central angle is 120°.

π · 9² · 120/360

3.14 · 81 · 1/3 = 84.78 units²

or in terms of pi = [tex]\frac{1}{3}[/tex] (81π)

The simplified expression is (z -3)/z - 5. Option C

From the information given, we have to simply the expressions by solving the quadratic equation;

From the information given, we have that;

z² -5zx + 6

Find the pair factors and substitute the values

z² - 2z - 3z + 6

Group in pairs, we have;

z(z - 2) - 3(z - 2)

For the denominator, we have;

z² - 7x + 10

Find the factors

z² - 5z - 2z + 10

Group in pairs, we have;

z(z - 5) - 2(z - 5)

Then, we have the simplified form;

(z -3)/z - 5

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3.96 cm is the value of the side x.

From the general formula of the sine rule:

[tex]\frac{sin\ a}{A} =\frac{sin\ b}{B} =\frac{sin\ c}{C}[/tex]

Where A, B, and C are the sides of the triangle and a, b, and c are the corresponding angles of the triangle.

In the given problem,

a= 90 degrees

A = 10 cm

b= 37 degrees

B = unknown

c =180 -90-37 = 53 (Sum of all inner angles of a triangle is 180 degrees)

C = x

Thus,

[tex]\frac{sin\ 90}{10} =\frac{sin\ 53}{x}[/tex]

x = 10 sin53°

x = 10*0.3959

x = 3.96

therefore, the value of the side x is 3.96 cm.

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3.96 cm is the value of the side x.

From the general formula of the sine rule:

[tex]\frac{sin\ a}{A} =\frac{sin\ b}{B} =\frac{sin\ c}{C}[/tex]

Where A, B, and C are the sides of the triangle and a, b, and c are the corresponding angles of the triangle.

In the given problem,

a= 90 degrees

A = 10 cm

b= 37 degrees

B = unknown

c =180 -90-37 = 53 (Sum of all inner angles of a triangle is 180 degrees)

C = x

Thus,

[tex]\frac{sin\ 90}{10} =\frac{sin\ 53}{x}[/tex]

x = 10 sin53°

x = 10*0.3959

x = 3.96

therefore, the value of the side x is 3.96 cm.

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Step-by-step explanation:

we can substitute book B as B

we can substitute book A as A

using the information above we can create an eqaution

we know B is $15.00 more than 3 times the cost of A

B = 3A + 15.00

we know the sum of the books is $75.00

A + B = 75.00

substitute B with eqaution 1 we will get

A + 3A + 15.00 = 75.00

4A + 15.00 = 75.00

- 15.00 -15.00

4A= 60.00

A = 15.00

which means book A is $15.00

On the basis of the data presented, it would be advisable to sell the machinery based on the differential analysis.

For selling the machinery,

Revenues = $277,800

Costs = 277,800 × 5% = $13,890

Profit = Revenues - Cost = $277,800 - $13,890 = $263,910

For leasing the machinery,

Revenues = $286,800

Costs = $24,900

Profit = Revenues - Cost = $286,800 - $24,900 = $261,900

Here the profit generated by selling the machinery is greater, which is the better option.

Hence selling the machinery is the better option.

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On the basis of the data presented, it would be advisable to sell the machinery based on the differential analysis.

For selling the machinery,

Revenues = $277,800

Costs = 277,800 × 5% = $13,890

Profit = Revenues - Cost = $277,800 - $13,890 = $263,910

For leasing the machinery,

Revenues = $286,800

Costs = $24,900

Profit = Revenues - Cost = $286,800 - $24,900 = $261,900

Here the profit generated by selling the machinery is greater, which is the better option.

Hence selling the machinery is the better option.

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In the equation , it take 2 hours for the experienced crew to paint the apartment.

What is equation?

The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.

Here let us take x as time taken by new crew of painters apartment and y as time taken by experienced crew of painters apartment .

Now a new crew of painters takes two times as long to paint a small apartment as the experienced crew  then,

x = 2y ----> 1

both crews can paint the apartment in 6 hours then,

=> x+y = 6

Now put  equation 1  into x+y=6 then,

=> 2y+y=6

=> 3y = 6

=> y = 6/3 = 2 hours.

Hence it take 2 hours for the experienced crew to paint the apartment.

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The calculated value of the surface area of the shape is 192 square cm

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

The triangle (see attachment)

The surface area is calculated as

Area = 1/2 * Base * Height

Substitute the known values in the above equation, so, we have the following representation

Area = 1/2 * 24 * 16

Evaluate

Area = 192

Hence, the surface area is 192 sq cm

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The formula that will be useful in finding the area of the triangle is: Pythagoras theorem

The formula to find the area of the triangle is expressed by the formula:

A = ¹/₂bh

Where:

b is base

h is height

Now, we have the base but we don't have the height.

Pythagoras Theorem is defined as the way in which we find the missing length of a right angled triangle.

The triangle has three sides, namely the hypotenuse (which is always the longest), Opposite (which doesn't touch the hypotenuse) and the adjacent (which is between the opposite and the hypotenuse).

Pythagoras is in the form of;

a² + b² = c²

where c is the hypotenuse

Thus, to find the height of the triangle, we will use Pythagoras theorem to get:

h = √(6² - 4²)

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Answer:

-1/2

Step-by-step explanation:

The information provided about the line is that the line passes through the points (2, 2) and (6, 0)

Therefore, the first step consists in computing the slope. The formula for the slope is:

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Now, by plugging the corresponding numbers is , we get that the slope is:

[tex]m=\frac{y_2-y_1}{x_2-x_1}=\frac{0-2}{6-2} =-\frac{1}{2}[/tex]

So then, we find that the slope is [tex]m=-\frac{1}{2}[/tex] and that the line passes through the point [tex](2,2)[/tex].

Conclusion: Based on the data provided, we conclude that the slope of the line is [tex]m=-\frac{1}{2}[/tex].

Answer:

see below

Step-by-step explanation:

A box plot—displays the five-number summary of a set of data.

The five-number summary is the

minimum, first quartile, median, third quartile, and maximum.

In a box plot, we draw a box from the first quartile to the third quartile.

A vertical line goes through the box at the median.

So the median of this set of data = 7

only C & D show a median of 7.

Then, Just like the median divides the data into half so that 50% of the measurement lies below the median and 50% lies above it, the quartile breaks down the data into quarters so that 25% of the measurements are less than the lower quartile, 50% are less than the median, and 75% are less than the upper quartile.

D is correct

a. The general formula for the sum of the first n terms is Sₙ = 2(1 - e⁻ⁿ)/(1 - e⁻¹)

b. The sum of a series is defined as the limit of the sequence of partial sums is converges.

c. The true statement are "The series converges. and The series is a geometric series." (option B and C).

a. To find the general formula for the sum of the first n terms, we need to add the first n terms of the series. Thus, we have:

Sₙ = 2e⁰ + 2e⁻¹ + 2e⁻² + ... + 2e⁻ⁿ

We can see that this is a geometric series with a first term a=2 and a common ratio r=e⁻¹. Therefore, we can use the formula for the sum of a geometric series to find the general formula for Sₙ:

Sₙ = a(1 - rⁿ)/(1 - r)

Substituting a=2 and r=e⁻¹, we get:

Sₙ = 2(1 - e⁻ⁿ)/(1 - e⁻¹)

the limit of the sequence of partial sums is zero, the series converges.

b. To determine whether the series converges or diverges, we can take the limit of the sequence of partial sums as n approaches infinity. Thus, we have:

∑n=0∞2e−n=limn→∞ S_n= limn→∞ 2(1 - e⁻ⁿ)/(1 - e⁻¹)

To evaluate this limit, we can use L'Hopital's rule, which states that if we have an indeterminate form of the type 0/0 or infinity/infinity, we can take the derivative of the numerator and the denominator until the form is no longer indeterminate. Applying L'Hopital's rule, we get:

lim n→∞ 2(1 - e⁻ⁿ)/(1 - e⁻¹) = limn→∞ 2e⁻ⁿ/(e⁻¹) = 0

c. We can now identify whether the series is a telescoping series, a geometric series, or a p-series.

The series is a geometric series, as we already saw in part (a).

Therefore, the correct answers are (B) and (C).

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Answer:

the answer would be 30 because you would be adding 7 years by 23 and since you said years ago i think you meant by years old

you're welcome if this help :)

Step-by-step explanation:

If mum was 23 seven years ago, that means she is currently 23 + 7 = 30 years old.

In seven years, she will be 30 + 7 = 37 years old.

The standard form of each of the numbers is given as follows:

a) 2.35 x 10^-3 = 0.00235.

b) 2.35 x 10³ = 2350.

A number in scientific notation is given by the notation presented as follows:

[tex]a \times 10^b[/tex]

With the base being [tex]a \in [1, 10)[/tex], meaning that it can assume values from 1 to 10, with an open interval at 10 meaning that for 10 the number is written as 10 = 1 x 10¹, meaning that the base is 1, justifying the open interval at 10.

For item a, to obtain the standard form of the number, we must move the decimal points three places to the left, hence:

2.35 x 10^-3 = 0.00235.

For item b, to obtain the standard form of the number, we must move the decimal points three places to the right, hence:

2.35 x 10³ = 2350.

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Answer:

(2,5] or (7,∞)

Step-by-step explanation:

The value of angle x is determined as 55⁰.

The measure of angle x can be calculated by applying circle theorem which states that the angle at the center of a circle is twice the angle at the circumference of a circle.

This theorem is known as, "Angle at the Center Theorem" or "Central Angle Theorem". It states that the angle formed by two radii (lines segment from the center of the circle to any point on the circumference) of a circle is always twice the size of the angle formed by the same arc (portion of the circumference) when measured at the circumference.

The value of angle x is calculated as follows;

from the given figure;

m ∠MOL = 2 m∠MNL

110⁰ = 2x

x = ¹/₂ x 110⁰

x = 55⁰

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Answer:

Step-by-step explanation:

The inequality that represents the situation "the temperature should be at least 40 degrees" is:

Temperature ≥ 40

This means that the temperature must be greater than or equal to 40 degrees.

The probability solutions are given as follows;

- P(CS Major and Not Hired) = 43.6% (Marginal)

- P(Other Major) = 31.5% (Marginal)

- P (Hired + CS Major) = 36.3% (Conditional)

- P (Not Hired + Other Major) = 48.5% (Conditional)

First we need to clarify the meaning of Joint, Marginal, and conditional probability.

Note that the table of values are attached.

So, the calculation is shows as follows:

P(CS Major and Not Hired) = 102/234 = 43.6% (Marginal)

- P(Other Major) = 74/234 = 31.5% (Marginal)

- P (Hired + CS Major) =  58/160 =  36.3% (Conditional)

- P (Not Hired + Other Major) = 36/74 48.5% (Conditional)

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