Because the values of circular functions repeat every 2x, they are used to describe things that repeat periodically.
For example, the maximum afternoon temperature in a given city might be modeled by the formula below. In
the formula, t represents the maximum afternoon temperature in month x, with x = 0 representing January, x = 1
representing February, and so on.
t=85-25 cos
ХЛ
6

Answers

Answer 1

Trigonometric functions such as cosine and sine are periodic functions with a repeating pattern. The cycle of the feature is 12, which means that the temperature pattern repeats every 12 months or years.

What do you mean by trigonometric identities?

 Trigonometric identities are  equalities that involve trigonometric functions and are valid for all the values ​​of the variables given in the equation. There are several different trigonometric identities for the side length and angle of a triangle.

Yes you are right! Trigonometric functions such as cosine and sine are periodic functions with a repeating pattern. Because they repeat every 2π, they are often used to model and describe things that repeat periodically, such as temperature changes, sound waves, and the motion of objects. The formula you provided uses a cosine function  to model  temperature changes over a 12 month period. The maximum afternoon temperature is given by the formula t = 85 - 25cos(πx/6), where x is the number of months. The amplitude of the cosine function is 25, which represents the maximum temperature variation  from the mean of 85 degrees Fahrenheit. The cycle of the feature is 12, which means that the temperature pattern repeats every 12 months or years.

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Related Questions

Consider the following table:

Source SS DF MS Test Statistic
Regression 3538.71

Error ?
11
537.08
Total 18

Step 1 of 9: Calculate the Sum of Squared Error. Round your answer to two decimal places, if necessary.

Answers

To calculate SS E(Sum of Squared Error ) we use the formula of

SSE Total SS - Regression SS but this answer does not make sense

because the SSE cannot be negative.

What is the Sum of Squared Error ?

In statistics, the discrepancy between the observed and anticipated

values is known as the sum of squared error (SSE). Since it is the sum

of the squares of the residual or the difference between predicted

values and actual values, it is also known as the sum of squares

residual (SSR).

To calculate the Sum of Squared Error (SSE), we can use the formula:

SSE = Total SS - Regression SS

We are given the value of Regression SS as 3538.71 and the value of

Total SS as 18. Therefore, we can calculate the value of SSE as:

SSE = Total SS - Regression SS

SSE = 18 - 3538.71

SSE = -3520.71

However, this answer does not make sense because the SSE cannot

be negative. This suggests that there may be an error in the given

information. Specifically, the value of Total SS should be greater than

or equal to the value of Regression SS. Without additional information,

we cannot provide a correct answer to this question.

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When the value of Violet Foods stock rose 1 point, the change was represented online as 1 point.
The next day, the change in value of the stock was represented as

4 points. Which of these describes the change in the stock's value?

Answers

The answer to this question is a 4 point increase. This is because the change in value of the stock is measured based on the difference between the current value and the previous value.

What is stock price?

It is determined by the supply and demand of buyers and sellers in the market. The price of a stock can fluctuate daily and is a reflection of the market's opinion of the company. It is important for investors to keep track of stock prices in order to make informed decisions about their investments.

In this case, the stock price increased from 1 point to 4 points, indicating a 4 point increase.

This can be expressed mathematically as follows:

Change in stock price = Current Value - Previous Value

Change in stock price = 4 - 1

Change in stock price = 3

Therefore, the stock's value increased by 4 points. This is because the change in value is calculated by subtracting the previous value from the current value.

In this case, the stock price increased by 3 points, resulting in a 4 point increase.

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1/5 of 120 is = ?
1/5 of 140 = ?

Answers

1/5 of 120 = 24
1/5 of 140 = 28
1/5 of 120 is = 24
1/5 of 140 = 28

A grocer will spend $150 on beans and tomatoes combined. Beans cost $2 per pound and tomatoes cost $3 per pound. Let B be a number of pounds of beans and T the corresponding number of pounds of tomatoes the grocer could buy. Discuss and elaborate on the following students' ideas. a. Mariah says she has a simple equation but it's not in the form B= (some expression) or T= (some expression). b. Chris tries to formulate an equation in the form T=50−( something )⋅B He found the 50 by reasoning that if the grocer buys no beans, he can buy 50 pounds of tomatoes.

Answers

Mariah fοrmulate the equatiοn as 150= 2B+3T

And Chris fοrmulate the equatiοn as T = 50-2/3B

What is equatiοn?

A assertiοn that twο expressiοns are equal is knοwn as an equatiοn. Twο things are equal, accοrding tο an equatiοn.

Given,

A grοcer will spend $150 οn beans and tοmatοes cοmbined. Beans cοst $2 per pοund and tοmatοes cοst $3 per pοund.

Here B be a number οf pοunds οf beans and T the cοrrespοnding number οf pοunds οf tοmatοes the grοcer cοuld buy.

Sο we can write

2B + 3T= 150…….(1)

Mariah says she has a simple equatiοn but it's nοt in the fοrm B= (sοme expressiοn) οr T= (sοme expressiοn)

Sο the equatiοn we can write in the fοrm οf cοst

150= 2B+3T

Chris tries tο fοrmulate an equatiοn in the fοrm οf T

2B + 3T= 150

Or, 3T= 150-2B

Or, T = 50-2/3B

Equatiοn that is fοrmed by Mariah is 150= 2B+3T

Chris fοrmulate the equatiοn as T = 50-2/3B

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PLEASE HELP IM SO CONFUSED WITH THIS!!!!

Answers

Answer:

[tex] \frac{91}{400} [/tex]

Step-by-step explanation:

Given:

A square (all sides are equal)

AC = 20 (diagonal)

PI = 7

First, we can find the side length of the whole square:

[tex]d(diagonal) = a \sqrt{2} [/tex]

[tex]a \sqrt{2} = 20[/tex]

Divide both sides of the equation by 2 to make a the subject:

[tex]a = \frac{20}{ \sqrt{2} } = \frac{20 \sqrt{2} }{2} = 10 \sqrt{2} [/tex]

Now, let's do the same thing, but with the smaller square on the top right:

[tex]pr \sqrt{2} = 7[/tex]

[tex]pr = ri = \frac{7}{ \sqrt{2} } = \frac{7 \sqrt{2} }{2} = 3.5 \sqrt{2} [/tex]

[tex]ic = 10 \sqrt{2} - 3.5 \sqrt{2} = 6.5 \sqrt{2} [/tex]

We also have to find the areas of the shaded rectangles and the whole square:

[tex]a(shaded) = 6. 5\sqrt{2} \times 3.5 \sqrt{2} = 45.5[/tex]

[tex]a(square) = ({10 \sqrt{2}) }^{2} = 200[/tex]

Let's call the event A:

A - "The dart hits the shaded region"

All outcomes:

n = 200 (since it can randomly hit the whole area)

Favorable outcomes:

m (A) = 45,5 (since it only need to hit the shaded region)

[tex]p(a) = \frac{m(a)}{n} = \frac{45.5}{200} = \frac{91}{400} [/tex]

Can someone please help me?

Answers

Based on the information provided, the decimal number used to calculate the sales tax would be 0.055.

How to convert a percentage to a decimal number?

To convert the percentage to a decimal number, we divide by 100. So, to find the decimal number used to figure the sales tax on a purchase with a sales t axrate of 5 1/2%, we can divide 5.5 by 100:

5.5 ÷ 100 = 0.055

Therefore, the decimal number used to figure the sales tax on a purchase with a sales tax rate of 5 1/2% is 0.055. To calculate the sales tax on a purchase, we multiply the purchase amount by the decimal rate of the sales tax. For example, if the purchase amount is $100, the sales tax would be:

$100 × 0.055 = $5.50

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Ayuda porfavor esta muy difícil

Answers

Answer:

D.

Step-by-step explanation:

temos transformar todos os termos e frações em .../4.

2/8 = 1/4

4 + 3/2 - 5/4 + 2/8 = 4×4/4 + 3/2 × 2/2 - 5/4 + 1/4 =

= 16/4 + 6/4 - 5/4 + 1/4 = 16/4 + 2/4 = 18/4 = 9/2

PLEASE HELP I NEED HELP I WILL GIVE YOU LOTS OF STARS AND BRAINILY STAR!!!

Phil and Lindsey are painting a room in their house. They started with 5
gallons of paint. On the first day, Phil used gallon of paint and
Lindsey used 3 gallons of paint. How many gallons of paint were left
after the first day?
a. 1 1/3
b. 1
c. 2/3

Answers

Answer: B. (1)

Step-by-step explanation: On the first day, Phil used 1 gallon of paint and Lindsey used 3 gallons of paint. Therefore, the total amount of paint they used on the first day is:

1 gallon + 3 gallons = 4 gallons

To find how many gallons of paint were left after the first day, we need to subtract the amount of paint used on the first day from the original amount of paint:

5 gallons - 4 gallons = 1 gallon

GUYSSS HW WORTH 40 POINTSS
Many bank accounts never go below zero. But some banks will allow a negative balance, at least for a short time, called an overdraft. It means someone has taken out, or 'drafted', more money than was in the account to begin with. Tallulah's account has gone into overdraft. Her balance is $-39.35. To get back to a positive balance, she plans to deposit money at a steady rate of $21.35 per week. How much will be in her account after 6 weeks?

Answers

Answer:

To calculate how much will be in Tallulah's account after 6 weeks, we need to find out how much her balance will increase each week due to her steady deposits, and then add that to her current balance.

Since Tallulah is depositing $21.35 per week, her balance will increase by that amount each week. After 6 weeks, her balance will have increased by:

$21.35/week x 6 weeks = $128.10

To find out how much will be in her account after 6 weeks, we need to add the amount of her balance increase to her current balance:

-$39.35 + $128.10 = $88.75

So after 6 weeks of making steady deposits, Tallulah's account will have a positive balance of $88.75.

Answer: $88.75

b r a i n l i e s t ?

Find the surface area of the cone in terms of π.




144π ft2


396π ft2


252π ft2


540π ft2

Answers

Answer:

The answer to your problem is, 1364.21 or C. 252π ft2

Step-by-step explanation:

Here is our formula and what we will be using:

A = π r ( r + [tex]\sqrt{h^2 + r^2}[/tex]

Radius = 12

Height = 21

Area = π r l + π [tex]r^2[/tex]

Length = [tex]\sqrt{r^2 + h^2}[/tex]

A = π r ( r + [tex]\sqrt{h^2 + r^2}[/tex] = π x 12 x ( 12 + [tex]\sqrt{21^2 + 12^2}[/tex]

= 1364.20921 or 1364.21

Thus the answer to your problem is, 1364.21 or C. 252π ft2

how many times greater is 0.009 1/10, 10 or 100 greater than 0.09

Answers

To compare the magnitudes of 0.009 and 0.09, we can divide 0.09 by 0.009:

0.09 / 0.009 = 10

This means that 0.09 is 10 times greater than 0.009.

To compare the magnitudes of 0.009 and 0.1, we can divide 0.1 by 0.009:

0.1 / 0.009 = 11.111...

This means that 0.1 is approximately 11.111 times greater than 0.009.

To compare the magnitudes of 0.009 and 1, we can divide 1 by 0.009:

1 / 0.009 = 111.111...

This means that 1 is approximately 111.111 times greater than 0.009.

Therefore, 0.009 is much smaller than both 0.1 and 1.

Complete the following proof. Show all of your work.
Prove: The segment joining the midpoints of two sides of a triangle is parallel to the third side.

1. Assign (x, y) coordinates to points A, B, and C.
2. Calculate the (x, y) values for points M and N.
3. Calculate the slope of MN.
4. Calculate the slope of AB.
5. Show that the slopes are equal. What can you conclude? B

Answers

Since m_MN = m_AB, we can conclude that the segment joining the midpoints of two sides of a triangle is parallel to the third side.

What is triangle?

Triangle is a three-sided polygon with three angles. It is one of the basic shapes in geometry and is usually considered the simplest type of polygon. Triangles are distinguished by their sides, angles, and whether or not they are equilateral, isosceles, or scalene. The sides of a triangle are always connected, and the angles of a triangle always add up to 180°.

Let A(x1, y1), B(x2, y2), and C(x3, y3) be the vertices of a triangle. Then the point M, which is the midpoint of the side AB, coordinates M(x1 + x2 / 2, y1 + y2 / 2). Similarly, the point N, which is the midpoint of the side AC, has coordinates N(x1 + x3 / 2, y1 + y3 / 2).

The slope of the segment MN is given by:
m_MN = (y1 + y3 / 2 - (y1 + y2 / 2)) / (x1 + x3 / 2 - (x1 + x2 / 2))

The slope of the segment AB is given by:
m_AB = (y2 - y1) / (x2 - x1)

Substituting the coordinates for M and N into the equation for m_MN, we get:
m_MN = (y1 + y3 / 2 - (y1 + y2 / 2)) / (x1 + x3 / 2 - (x1 + x2 / 2))
= (y3 - y2) / (x3 - x2)

Substituting the coordinates for A and B into the equation for m_AB, we get:
m_AB = (y2 - y1) / (x2 - x1)
= (y3 - y2) / (x3 - x2)

Since m_MN = m_AB, we can conclude that the segment joining the midpoints of two sides of a triangle is parallel to the third side.

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And why would you pic that answer

Answers

If the graph of f (x) is translated one unit down and 5 units left, that gives us a new function named g(x), the equation that represents g(x) is D. g(x) = 1/3(x-12)^3 + 5.

How to calculate the value

The given function is f(x) = 1/3 (x+7)³ -4.

To translate the graph one unit down, we need to subtract 1 from the function f(x). Similarly, to translate the graph 5 units left, we need to add 5 to x inside the function.

So the new function g(x) will be:

g(x) = 1/3 ((x+5+7)³) - 4 - 1

g(x) = 1/3 (x+12)³ - 5

Comparing this with the given options, we see that the correct equation is option D.

Therefore, the answer is g(x) = 1/3(x-12)^3 + 5.

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For questions 4 and 5, explain why each pair of triangles is similar. Show supporting work, write an
appropriate similarity statement, and state the theorem used. (3 points each)
4.)
6 in.
8 in.
C 4 in.
E
3 in.
D
5.)
Q
A
7 cm
4 cm
P
4 cm
12 cm
RU
21 cm
12 cm

Answers

Answer:

Step-by-step explanation:

o show that the two triangles are similar, we need to demonstrate that their corresponding angles are congruent and their corresponding sides are proportional.

The two triangles share a common angle at vertex E, which is congruent to angle DCE, since they are vertical angles. Additionally, angle CED is congruent to angle A because they are alternate interior angles formed by a transversal intersecting parallel lines.

To show that the corresponding sides are proportional, we can use the side-angle-side (SAS) similarity theorem. In particular, we can compare the ratio of the length of corresponding sides:

DE/EC = 8/4 = 2

ED/AC = 4/6 = 2/3

CD/AD = 3/5

Since the ratios are equal, we can write the similarity statement as:

Triangle ACD ~ Triangle CED

The theorem used is the side-angle-side (SAS) similarity theorem.

To show that the two triangles are similar, we need to demonstrate that their corresponding angles are congruent and their corresponding sides are proportional.

The two triangles share a common angle at vertex P, which is congruent to angle QPR since they are vertical angles. Additionally, angle APR is congruent to angle URP because they are alternate interior angles formed by a transversal intersecting parallel lines.

To show that the corresponding sides are proportional, we can use the side-angle-side (SAS) similarity theorem. In particular, we can compare the ratio of the length of corresponding sides:

PR/AP = 12/4 = 3

UR/QA = 21/7 = 3

RU/PA = 12/4 = 3

Since the ratios are equal, we can write the similarity statement as:

Triangle APQ ~ Triangle PRU

The theorem used is the side-angle-side (SAS) similarity theorem.


9) The value of a particular investment follows a pattern of exponential growth. In the year 2000, you invested
money market account. The value of your investment t years after 2000 is given by the exponential
growth model A = 5500e^0.063t. When will the account be worth $7536?
money

Answers

The account will be worth $7536 about 5.76 years after the year 2000, which is approximately mid-2005.

Exponential growth:

Exponential growth is a type of growth pattern where a quantity increases at a constant percentage rate over time.

The formula used in this problem is [tex]A = Pe^{rt}[/tex], where A is the final amount, P is the initial amount, r is the rate of growth, and t is the time elapsed.

Here we have

The value of your investment t years after 2000 is given by the exponential growth model[tex]A = 5500e^{0.063t}[/tex]

Where t is the number of years

We can start by setting up an equation where A (the value of the investment) equals $7536:

=> [tex]7536 = 5500e^{ (0.063t)}[/tex]

To solve for t, we need to isolate t on one side of the equation. We can start by dividing both sides by 5500:

=> [tex]\frac{7536}{ 5500} =e^{ (0.063t)}[/tex]

Next, we can take the natural logarithm (ln) of both sides of the equation to eliminate the exponent:

[tex]ln(7536/5500) = ln(e^{(0.063t)})[/tex]

Using the rule that ln(e^x) = x, we can simplify the right-hand side:

ln(7536/5500) = 0.063t

Finally, we can solve for t by dividing both sides by 0.063:

t = ln(7536/5500) / 0.063

Using a calculator, we get:

t ≈ 5.76

Therefore,

The account will be worth $7536 about 5.76 years after the year 2000, which is approximately mid-2005.

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26
11°
X
130
(Round the answer to the nearest hundredth.)
The length of side x is
15319
Gaveart
067295

Answers

The length of side x is approximately 24.87, rounded to the nearest hundredth.

how can we find side of the triangle?

To find the length of side x, we can use the sine function, which relates the opposite side to an angle to the hypotenuse:

sin(11°) = opposite side/hypotenuse

Rearranging this equation, we get:

opposite side = sin(11°) * hypotenuse

We know that the hypotenuse has a length of 130, so we can substitute that in:

opposite = sin(11°) * 130

Using a calculator, we can evaluate sin(11°) to be approximately 0.1919, so we can substitute that in as well:

opposite = 0.1919 * 130

Simplifying this expression, we get:

opposite ≈ 24.87

Therefore, the length of side x is approximately 24.87, rounded to the nearest hundredth.

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STATISTICAL STUDIES
3. Mary wants to know if watching television affects test scores.
She chooses 10 friends on her high school soccer team for her study. The night before a math test, 5 of those friends watch television, and the other 5 do not. Then Mary compares her friends' scores on the math test the next day.

Part A: Describe two ways in which Mary's study design is flawed.
1.
2.


Part B: Mary finds that her 5 friends who did not watch television scored an average of 7 percentage points higher on the math test than the 5 friends who did watch television. Based on this, Mary concludes that teenagers will get better grades if they do not watch television. What is one reason Mary's conclusion is likely to be invalid?


Part C: A study conducted by a cable television company showed that 87% of American teenagers would rather watch news on television than read a newspaper. What are two reasons this statistic cannot be trusted?
1.
2.

Answers

Part A:

The sample size is too small (only 10 friends) and the sample is not representative of the population.There is no randomization or control group in Mary's study design, which makes it difficult to establish cause-and-effect relationships.

What is the design  about?

Part B:

One reason Mary's conclusion is likely to be invalid is that the study design is not controlled. There could be other factors besides television watching that affected the test scores, such as differences in the amount of study time, motivation, or ability between the two groups. In addition, the sample size is too small to draw a general conclusion about the population.

Part C:

The study was conducted by a cable television company, which has a vested interest in promoting television viewership. This raises questions about the study's objectivity and potential bias.The sample used in the study is not specified, which makes it difficult to determine whether the sample is representative of the population. the study did not use a random sample, which could introduce sampling bias.

Additionally, the question itself may have influenced the results, as some teenagers may have preferred to watch news on television simply because they do not regularly read newspapers.

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please help by tomorrow

Answers

The answer is 4; the value of k represents the vertical shift/how many units the original graph was shifted up.

PLease help, this is due tomorrow by 1 pm.

Answers

Note that the parameters of the graph a and graph b are given below.

What are the parameters of graph A and B?

Graph A - y=2(x-1)²

Vertex: The vertex of the function is (1, 0).Axis of symmetry: The axis of symmetry is the vertical line passing through the vertex, which is x = 1.Y-intercept: The y-intercept is (0, -2).Minimum or maximum: The coefficient of the squared term is negative, indicating that the parabola opens downwards and has a maximum value.Roots: Since the coefficient of the squared term is negative, the function does not have any real roots.Minimum or maximum value: The maximum value of the function is 0.Range: The range of the function is (-∞, 0].Domain: The domain of the function is (-∞, ∞).Stretch/shrink standard: The function is vertically stretched by a factor of 2 compared to the standard form of a quadratic function y = ax².

See graph attached.

Graph B - y = 1/2x² + 3

Vertex: The vertex of the function is (0, 3).

Axis of symmetry: The axis of symmetry is the vertical line passing through the vertex, which is x = 0.

Y-intercept: The y-intercept is the point where the graph intersects the y-axis. It is (0, 3).

Minimum or maximum: The coefficient of x² is positive, which means the parabola opens upwards, and therefore the function has a minimum value. The minimum value is 3.

Solutions: To find the solutions or roots of the quadratic equation, we need to set y or f(x) equal to zero and solve for x.

0 = 1/2 x² + 3

Subtracting 3 from both sides, we get:

-3 = 1/2 x²

Multiplying both sides by -2, we get:

6 = -x²

Taking the square root of both sides, we get:

x = ±√(-6)

Since the square root of a negative number is not a real number, the function has no real roots.

Minimum or maximum value: The minimum value of the function is 3.

Range: The range of the function is y ≥ 3, because the function has a minimum value of 3.

Domain: The domain of the function is all real numbers, because there are no restrictions on the values of x for which the function is defined.

Stretch/Shrink/Standard: The coefficient of x^2 is positive and less than 1, which means that the graph of the function is narrower than the graph of y = x². This is an example of a standard quadratic function that has been vertically compressed by a factor of 1/2.

See graph attached.


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Which point on the graph represents the equilibrium price?

Answers

To identify the equilibrium price on a graph, you would need to locate the point where the supply and demand curves intersect. At this point, the quantity demanded by consumers is equal to the quantity supplied by producers, resulting in a market equilibrium.

Without seeing the graph in question, it's difficult for me to give a specific answer. However, if you have a graph that shows the supply and demand curves for a particular product or service, you can look for the point where these curves intersect to find the equilibrium price.

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[tex]\begin{align}\colorbox{black}{\textcolor{white}{\underline{\underline{\sf{Please\: mark\: as\: brillinest !}}}}}\end{align}[/tex]

[tex]\textcolor{blue}{\small\textit{If you have any further questions, feel free to ask!}}[/tex]

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What is the area of the right way to go with a height of 6 1/4 yards and a base of 23

Answers

As a result, the right triangle's area is 71.875 square yards.

WHO DEFINES A RIGHT TRIANGLE?

A triangle is considered to be correct if one of its angles is 90 degrees. The hypotenuse and legs are terms used to describe the two sides that are not the correct angle.

A basic mathematical theorem that has to do with right triangles is the Pythagorean theorem. According to this rule, the square of a right triangle's hypotenuse is equal to the sum of its other two sides' squares. With those words:

a² + b² = c²

where the triangle's legs are measured by letters a, b, and c, and the hypotenuse is measured by letter c.

Geometry, trigonometry, and physics are just a few of the fields in mathematics and science where right triangles are crucial.

The following formula can be used to determine the area of a right triangle:

(Base * Height) / 2 = Area

In this instance, the height is 6 1/4 yards, and the base is 23 yards. The height must be converted to yards:

25/4 yards times 6 1/4 yards

Now, we can enter these values as substitutes in the formula:

Area is equal to (23 × 25/4)/2

Area is (575/4)/2

Area is (575/8), = 71.875 square yards.

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Another company is advertising 59$ for their service plan I have the same plan but my bills is how much our plan is 15% more but it also includes additional services

Answers

If you have the same plan as the company that is advertising for $59, but your bill is 15% more, it's possible that you are receiving additional services or features that are not included in the $59 plan.

How do companies offer pricing plans?

It's common for companies to offer different pricing plans for their services, and these plans often come with different features and levels of service.

It's important to review the details of both plans to determine what the differences are.

Some questions you may want to consider are:

What specific services and features are included in each plan?Are there any differences in the level of customer support provided?Are there any limitations or restrictions on usage or access with one plan versus the other?Are there any promotional or introductory pricing offers that may not be reflected in your current bill?

Once you have a clear understanding of the differences between the plans, you can decide whether the additional services you are receiving are worth the 15% increase in cost. If you feel that you are not receiving enough value for the additional cost, you may want to consider switching to the lower-priced plan or negotiating with your current provider for a better deal.

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david invests $300 into an account with a 2.3% interest rate that is compounded semiannually how much money will he have in this account if he keeps it for 10 years

Answers

Answer:

Step-by-step explanation:

To calculate the amount of money David will have in his account after 10 years, we can use the formula for compound interest:

A = P(1 + r/n)^(nt)

Where:

A is the amount of money at the end of the period

P is the principal amount (the initial investment)

r is the annual interest rate (as a decimal)

n is the number of times the interest is compounded per year

t is the time in years

In this case, we have:

P = $300 (the initial investment)

r = 0.023 (the annual interest rate of 2.3% as a decimal)

n = 2 (the interest is compounded semiannually, or twice per year)

t = 10 (the time period in years)

Plugging these values into the formula, we get:

A = 300(1 + 0.023/2)^(2*10)

A = 300(1.0115)^20

A = $388.68

Therefore, David will have $388.68 in his account after 10 years if he keeps his initial investment of $300 in an account with a 2.3% interest rate that is compounded semiannually.

$377.08
Is how much money at the end of 10 years

I can calculate angle measures in radians and degrees, and can use trigonometric ratios to find information about right triangles.

a) Find the six trigonometric ratios of Angle C, given the figure:

Answers

The six trigonometric ratios of angle C are sin C = 3/5, cos C = 4/5, tan C = 3/4, csc C = 5/3, sec C = 5/4 and cot C = 4/3

What are Trigonometric functions?

Trigonometric functions are mathematical functions that relate the angles and sides of a right triangle. They are commonly used in geometry, physics, and engineering to solve problems involving triangles and periodic phenomena.

To find the trigonometric ratios of angle C, we first need to label the sides of triangle ABC relative to angle C. We can use the convention of labeling the side opposite angle C as "a", the side adjacent to angle C as "b", and the hypotenuse of the triangle as "c".

Using this labeling, we have:

a = AB = 24

b = BC = 32

c = AC = 40

Now we can calculate the trigonometric ratios of angle C:

sin C = opposite/hypotenuse = a/c = 24/40 = 3/5

cos C = adjacent/hypotenuse = b/c = 32/40 = 4/5

tan C = opposite/adjacent = a/b = 24/32 = 3/4

csc C = 1/sin C = hypotenuse/opposite = c/a = 40/24 = 5/3

sec C = 1/cos C = hypotenuse/adjacent = c/b = 40/32 = 5/4

cot C = 1/tan C = adjacent/opposite = b/a = 32/24 = 4/3

Therefore, the six trigonometric ratios of angle C are:

sin C = 3/5

cos C = 4/5

tan C = 3/4

csc C = 5/3

sec C = 5/4

cot C = 4/3

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If you have a quadratic equation in standard form and it has values of a=-4, b = -10 and c = 6, what would the equation look like if you factored it out completely ? TIMED!!!

Answers

The factored form of the quadratic equation with a = -4, b = -10, and c = 6 is (-2x - 2)(2x - 3).

What is quadratic equation?

A quadratic equation is a second-degree polynomial equation in a single variable, where the variable is typically denoted by x.

According to question:

To factor a quadratic equation in standard form (ax² + bx + c), we need to find two binomials whose product is equal to the quadratic expression. The binomials have the form:

(x + m)(x + n)

where m and n are constants that we need to find.

To factor the quadratic equation with a = -4, b = -10, and c = 6, we can first multiply the coefficient of the leading term (a) and the constant term (c) to get -4*6 = -24. We need to find two numbers whose product is -24 and whose sum is equal to the coefficient of the middle term (b), which is -10.

One way to find these numbers is by trial and error or by using the AC method. We can write -24 as the product of two factors in the following way:

-24 = (-2) * 12

Now, we look for two numbers whose sum is -10 and whose product is (-2)*12 = -24. We can choose -2 and -12 because they satisfy these conditions:

-2 + (-12) = -14 (the sum is equal to b)

(-2) * (-12) = 24 (the product is equal to ac)

Therefore, we can factor the quadratic equation as:

-4x² - 10x + 6 = (-2x - 2)(2x - 3)

We can check that this is correct by using the distributive property:

(-2x - 2)(2x - 3) = -4x² + 6x - 4x - 6 = -4x² - 10x + 6

So the factored form of the quadratic equation with a = -4, b = -10, and c = 6 is (-2x - 2)(2x - 3).

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To allow the pump of the fish tank to work properly and avoid water overflowing, the fish tank should be filled up to 7/8 of its capacity. Emily bought a 64-gallon fish tank and filled up the fish tank with 13 gallons of salt water. How much more water should she add?

Answers

Answer: Emily should add 43 gallons of water to her fish tank to fill it up to 7/8 of its capacity.

Step-by-step explanation:  If Emily's fish tank has a capacity of 64 gallons, she should fill it up to 7/8 of its capacity to allow the pump to work properly and avoid water overflowing.

So, the amount of water that Emily should have in her fish tank is:

64 x 7/8 = 56 gallons

Emily has already added 13 gallons of salt water. Therefore, the amount of additional water she should add to the tank is:

56 - 13 = 43 gallons

Emily should add 43 gallons of water to her fish tank to fill it up to 7/8 of its capacity.

What is the area of the regular polygon

Answers

The area of the regular polygon is approximately 50 in². Option B

How do you find the area of the regular polygon?

Since the regular polygon has 4 sides and looks like a square, we can use the information about the distance from the midpoint to a vertex (which is given as 5 inches) to find the side length of the square.

The distance from the midpoint to a vertex in this case is equal to half the diagonal of the square. Let's call the side length of the square 's' and the diagonal 'd'. By using the Pythagorean theorem for a right triangle formed by the diagonal and two sides of the square, we can write:

(d/2)^2 + (d/2)^2 = s^2

Since the distance from the midpoint to a vertex is 5 inches, the diagonal of the square (d) is 10 inches. Now, we can substitute this value into the equation:

(10/2)^2 + (10/2)^2 = s^2

5^2 + 5^2 = s^2

25 + 25 = s^2

50 = s^2

Now, take the square root of both sides:

s = √50

s ≈ 7.07 inches

Now that we have the side length of the square, we can calculate its area:

Area = s^2

Area ≈ 7.07^2

Area ≈ 50 in²

The above answer is in response to the full question below;

What is the area of the regular polygon? From the midpoint of the regular polygon is 5in.

a. 25in²

b 50in²

c. 100 in²

d. 200in²

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Respond to the following discussion prompt.

Two main sources of income are regular income, such as from a full-time job, and side income, which is any money earned outside a regular job. Active income and passive income can provide enough money to replace a regular job. Discuss some of the effects of various income sources on the economy, both for individuals (microeconomics) and the population as a whole (macroeconomics). Select one of the prompts. In your response, explain your reasoning and be sure to discuss specific types of income.

Prompt 1
Individuals: What happens if someone with lots of side income loses their main job? What if someone without a lot of side income loses their main job?
Population: What would happen if everyone built side income? How might that affect the economy on a larger scale?
Prompt 2
Individuals: Some people work multiple part-time jobs to make ends meet. Others have a large salary but work over 50 hours per week. Many people have physical or other challenges. With these considerations, who has the time and money to invest in building side income? Who might not? Are there other situations that make it harder or easier to build side income?
Population: Is side income a viable solution to poverty?

Answers

It is not a one-size-fits-all solution and may have both positive and negative effects on the economy as a whole.

What do you mean by term Income ?

Income refers to money that a person or entity receives on a regular basis, typically as compensation for work, services, or investments. Income can come from various sources, including wages or salaries from employment, profits from running a business, rental income from property ownership, interest or dividends from investments, and government benefits or subsidies. It is usually measured on an annual basis and is subject to taxation by governments. Income is a crucial factor in determining an individual's or household's overall financial well-being and their ability to meet their basic needs, save for the future, and participate in the economy through spending and investing.

Prompt 1:

Individuals:

If someone with lots of side income loses their main job, they may have a cushion to fall back on in the short-term until they find another full-time job. However, if their side income is not enough to sustain them for an extended period of time, they may eventually need to dip into their savings or take on debt to make ends meet. On the other hand, if someone without a lot of side income loses their main job, they may struggle more immediately to pay bills and maintain their standard of living. They may have to take on part-time work or rely on government assistance until they can secure another full-time job.

Population:

If everyone built side income, it could have both positive and negative effects on the economy. On the positive side, it would diversify income streams for individuals, potentially leading to greater financial stability and resilience. It could also boost overall consumer spending and stimulate economic growth, as people with more disposable income are likely to spend more. However, if everyone built side income, it could also lead to increased competition and lower wages in certain industries, as more people are competing for the same jobs or selling the same goods or services. It could also exacerbate income inequality, as those who are already wealthy or have more resources to invest in side income opportunities may benefit disproportionately.

In terms of specific types of income, passive income streams such as rental properties, stocks, or investments can be particularly beneficial for individuals with side income. These sources of income require less time and effort to maintain than active income streams such as freelancing or running a business, which may be more difficult to maintain if someone is also working a full-time job. However, passive income streams may also require significant upfront investment or ongoing expenses, making them less accessible for some individuals.

Overall, while side income can provide a helpful financial cushion and diversify income streams for individuals, it is not a one-size-fits-all solution and may have both positive and negative effects on the economy as a whole.

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Which compare the end behavior of functions m and n?

M(x) = -8x + 10
N(x) = 5x²-9


Help me pls I will give u 5 stars

Answers

The end behavior of function M is a downward slope, while the end behavior of function N is an upward curve.

The end behavior of functions :

The end behavior of a function describes the behavior of the function as the input (x) becomes very large in either the positive or negative direction. It is determined by the degree and leading coefficient of the function.

Here we have

M(x) = -8x + 10

N(x) = 5x²- 9

For function M(x) = -8x + 10, as x becomes very large in either the positive or negative direction, the output (y) becomes increasingly negative.

This is because the leading coefficient is negative, and the degree of the function is 1 (linear). Therefore, the end behavior is described as follows:

As x → ∞, M(x) → -∞

As x → -∞, M(x) → +∞

For function N(x) = 5x²-9, as x becomes very large in either the positive or negative direction, the output (y) becomes increasingly positive.

This is because the leading coefficient is positive, and the degree of the function is 2 (quadratic). Therefore, the end behavior is described as follows:

As x → ∞, N(x) → +∞

As x → -∞, N(x) → +∞

Therefore,

The end behavior of function M is a downward slope, while the end behavior of function N is an upward curve.

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Factor the following polynomial. Check your answers using FOIL.
x² + 3x - 70
O(x+10) (x-7)
(x - 1)(x-9)
(x - 3)(x - 70)
(x - 10) (x + 7)

Answers

This matches the original polynomial, so we know our factoring is correct. Therefore, the answer is:

[tex]x^2 + 3x - 70=(x-7)(x+10)[/tex].

What is factor?

In mathematics, a factor is a number or algebraic expression that divides another number or expression without leaving a remainder. In other words, a factor is a quantity that can be multiplied by another quantity to produce a given result.

For example, if we consider the number 12, its factors are 1, 2, 3, 4, 6, and 12 because they can be multiplied together to give 12.

In algebra, the term factor often refers to an algebraic expression that can be written as a product of simpler expressions. For example, the expression x^2 - 4 can be factored as (x - 2) (x + 2), which means that it can be written as the product of the two factors (x - 2) and (x + 2).

To factor the polynomial x² + 3x - 70, we need to find two factors that multiply to give -70 and add to give 3.

One way to approach this is to list all the factor pairs of -70 and look for a pair that adds up to 3:

[tex]-1 * 70 = -70[/tex]

[tex]-2 * 35 = -70[/tex]

[tex]-5 * 14 = -70[/tex]

[tex]1 *-70 = -69[/tex]

[tex]2 * -35 = -70[/tex]

[tex]5 * -14 = -70[/tex]

From this list, we see that -7 and 10 are the only factor pair that add up to 3. So, we can write:

[tex]x^2 + 3x - 70 = (x - 7)(x + 10)[/tex]

To check our answer, we can use FOIL to expand the product of (x - 7) (x + 10):

[tex](x - 7)(x + 10) = x(x) + x(10) - 7(x) - 7(10)[/tex]

[tex]= x^2+ 10x - 7x - 70[/tex]

[tex]= x^2 + 3x - 70[/tex]

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