Description of the circumscribed angle

Answers

Answer 1

A circumscribed angle is an angle that has its vertex on the circumference of a circle and whose sides are chords of the circle. The measure of a circumscribed angle is equal to half the measure of the intercepted arc. Circumscribed angles are important in geometry because they are used to prove theorems about angles, chords, and arcs in circles. The opposite angles of a cyclic quadrilateral are always supplementary, and the sum of the angles in a cyclic polygon is always equal to (n-2)180 degrees, where n is the number of sides of the polygon.

Answer 2
Angle a is a circumscribed angle on circle o so this is angle a right over here then when they say it's a circumscribed angle that means that the two sides of the angle are tangent to the circle.

Related Questions

The park near Henry's house is closed before school, so he cannot ride through the park on his way to school. Complete the sentence to show which routes Henry should take to ride the least possible distance. ​ Henry should take it on the way to school and on the way home from school. Using the routes selected in Part A, what is the total distance, in yards, that Henry will ride each day? If necessary, round the distance to the nearest hundredth. ​ ​ yards?

Answers

part a:

Henry should take a route that bypasses the park on the way to school and on the way home from school in order to ride the least possible distance.

He should take Route C on his way to school and Route B on his back.

part b: no values were given to calculate the distance.

What is distance?

Distance is described as a numerical or occasionally qualitative measurement of how far apart objects or points are.

Since the park near Henry's house is closed before school, so he cannot ride through the park on his way to school, he should take Route C on his way to school and Route B on his back.

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How many pounds of candy worth 70 cents a pound must be mixed with 30 pounds of candy worth 90 cents a pound to produce a mixture which can be sold for 85 cents per pound?

Answers

Let x be the number of pounds of candy worth 70 cents a pound that must be mixed with 30 pounds of candy worth 90 cents a pound to produce a mixture which can be sold for 85 cents per pound.

The total weight of the mixture will be (x + 30) pounds, and the total cost of the mixture will be:

0.7x + 0.9(30) = 0.85(x + 30)

Simplifying and solving for x, we get:

0.7x + 27 = 0.85x + 25.5
0.15x = 1.5
x = 10

Therefore, 10 pounds of candy worth 70 cents a pound must be mixed with 30 pounds of candy worth 90 cents a pound to produce a mixture which can be sold for 85 cents per pound.

Answer: 10 pounds                                               .                                    

I really need help with this to find x value and need reasons ​

Answers

Answer:

x = 45 degrees

Step-by-step explanation:

All angles in a triangle will add up to 180 degrees.  So far we have 57 degree of 180.  We also see a supplementary angle, with one side being 102 degrees, so the other is 78 degrees, because it must add up to 180.  We see that the arrows in the bases show that the corners are even, so now we know two corners: one with 57 degrees and the other with 78.  

Now, follow this equation to find x:

57 + 78 + x = 180

135 + x = 180

-135        -135

x = 45

An account is opened with an initial deposit of $7,500 and earns 3.4% interest compounded semi-annually. Round all answers to the nearest dollar.

Answers

The final amount with interest earned at a rate of 3.4% compounded semi-annually would be approximately $7,758.

HOW CAN WE CALCULATE INTEREST?

Let's calculate the values based on the given information.

Given:

Initial deposit (P) = $7,500

Interest rate (r) = 3.4% or 0.034 (decimal)

Compounding frequency (n) = 2 (semi-annually)

We can use the compound interest formula to calculate the values:

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

Where:

A = the final amount (including interest)

P = the principal amount (initial deposit)

r = the interest rate (in decimal)

n = the number of times interest is compounded per time period

t = the number of time periods

Let's calculate the final amount (A) after one year (2 semi-annual periods):

A =[tex]$7,500(1 + 0.034/2)^(2*1)[/tex]

A =[tex]$7,500(1.017)^2[/tex]

A = $7,500(1.034344) [rounded to 6 decimal places]

A ≈ $7,758 [rounded to the nearest dollar]

So, after one year, the final amount with interest earned at a rate of 3.4% compounded semi-annually would be approximately $7,758.

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Find the missing side
Please help

Answers

Answer:

Step-by-step explanation:

64 - 16= 48

[tex]\sqrt{48}[/tex]

[tex]\sqrt{3*16}[/tex]

4[tex]\sqrt{3}[/tex]

Find the diameter of a circle that has a circumference of 942 meters

Answers

The diameter of the circle is approximately 947.15 meters.

What is a circle?

It is the center of an equidistant point drawn from the center. The radius of a circle is the distance between the center and the circumference.

The formula for the circumference of a circle is:

C = 2πr

where C is the circumference and r is the radius of the circle.

We can use this formula to find the radius of the circle given its circumference:

C = 2πr

942 = 2πr

Dividing both sides by 2π, we get:

r = 942/2π

Now, we can use the formula for the diameter of a circle in terms of its radius:

d = 2r

Substituting the value we found for r, we get:

d = 2(942/2π) = 942/π

Using a calculator to approximate π as 3.14, we can evaluate the expression to get:

d ≈ 947.15 meters

Therefore, the diameter of the circle is approximately 947.15 meters.

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18, 13, 6, 14, 11, 22
A telemarketing company keeps track of how many sales each of their telemarketers make on a daily basis, shown
above. The mean absolute deviation of the entire data set is

Answers

The mean absolute deviation of the entire data set is 4.

To find the mean absolute deviation (MAD) of the given data set, we need to follow these steps:

Calculate the mean (average) of the data set.

Subtract the mean from each data point to find the deviation.

Take the absolute value of each deviation.

Calculate the mean of the absolute deviations.

Let's calculate the MAD for the given data set: 18, 13, 6, 14, 11, 22.

Calculate the mean.

Mean = (18 + 13 + 6 + 14 + 11 + 22) / 6 = 84 / 6 = 14.

Calculate the deviation for each data point.

Deviation = data point - mean.

Deviation for 18 = 18 - 14 = 4.

Deviation for 13 = 13 - 14 = -1.

Deviation for 6 = 6 - 14 = -8.

Deviation for 14 = 14 - 14 = 0.

Deviation for 11 = 11 - 14 = -3.

Deviation for 22 = 22 - 14 = 8.

Take the absolute value of each deviation.

Absolute deviation = |deviation|.

Absolute deviation for 4 = |4| = 4.

Absolute deviation for -1 = |-1| = 1.

Absolute deviation for -8 = |-8| = 8.

Absolute deviation for 0 = |0| = 0.

Absolute deviation for -3 = |-3| = 3.

Absolute deviation for 8 = |8| = 8.

Calculate the mean of the absolute deviations.

Mean absolute deviation = (4 + 1 + 8 + 0 + 3 + 8) / 6 = 24 / 6 = 4.

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Write a numerical pattern that represents the rule y=x+0 starting with x=0

Answers

The pattern represents a straight line that passes through the origin with a slope of 1.

What are linear equations in two variables?

The form Ax + By + C = 0 is a two-variable linear equation, where A and B are the coefficients, C is a constant term, and x and y are the two variables, with each having a degree of 1.

The numerical pattern that represents the rule y = x + 0, starting with x = 0, is:

x y

0 0

1 1

2 2

3 3

4 4

... ...

This example shows that when x increments by 1, y additionally increments by 1. Since the rule for y is y = x + 0, we can see that adding 0 to x doesn't change its value, so y is just the same as x. As a result, x and y have a linear relationship with a slope of 1 and a y-intercept of 0.

To put it another way, the pattern is a straight line with a slope of one that runs through the origin.

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This system of inequalities models the scenario: 4x + 2y ≤ 16 x + y ≥ 4 Part A: Describe the graph of the system, including shading and the types of lines graphed. Provide a description of the solution set. (4 points) Part B: Is the point (2, 3) included in the solution area for the system? Justify your answer mathematically. (3 points) Part C: Choose a different point in the solution set and interpret what it means in terms of the real-world context. (3 points) Source StylesFormatFontSize

Answers

In terms of part A, the solution set is a triangular region with vertices at (0,4), (2,3), and (4,0).

Part B: Yes, the point (2, 3) included in the solution area for the system.  The solution of the inequalities is (4, 0).

Part C. I choose the point (1,3) in the solution set. This implies that Michael can buy 1 cupcake and 3 pieces of fudge with $16 as well as feed at least 4 siblings.

What is the system of inequalities?

Part A: The inequalities limit Michael's purchase of cupcakes and fudge with $16 to feed at least 4 siblings. The first one, 4x + 2y ≤ 16, restricts the total cost to be $16 or less. To graph y ≤ -2x + 8, draw the line with slope -2 and y-intercept 8, and shade below it. The inequality x + y ≥ 4 means Michael must feed at least 4 siblings. It can be graphed as y ≥ -x + 4, a line with slope -1 and y-intercept 4. To graph the inequality, draw a dashed line with slope -1 and y-intercept 4. Shade the region above the line for y ≥ -x + 4. The solution set is the intersection of the shaded regions. Triangle with vertices (0,4), (2,3), and (4,0).

Part B:

To check if (2,3) is in solution area, we test if it satisfies both inequalities. We substitute x=2, y=3 into 4x + 2y ≤ 16 and get 14. When x=2 and y=3 in x+y≥4, we get 5, which is true. However, (2, 3) is not included in the solution area because it does not satisfy 2x+y≤8.

Part C:

Let select (2,2) in the solution set. Michael can buy 2 cupcakes and 2 pieces of fudge while feeding 4 siblings within his budget. Michael can spend $8 on 2 cupcakes and $4 on 2 fudge pieces to feed his siblings. Michael can buy various combinations of cupcakes and fudge within his budget to feed at least 4 siblings.

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See full question below

Michael has $16 and wants to buy a mixture of cupcakes and fudge to feed at least 4 siblings. Each cupcake costs $4, and each piece of fudge costs $2.

This system of inequalities models the scenario:

4x + 2y ≤ 16

x + y ≥ 4

Part A: Describe the graph of the system, including shading and the types of lines graphed. Provide a description of the solution set. (4 points)

Part B: Is the point (2, 3) included in the solution area for the system? Justify your answer mathematically. (3 points)

Part C: Choose a different point in the solution set and interpret what it means in terms of the real-world context. (3 points)

Which retirement plan(s) is not considered a defined contribution plan?

Fixed Annuity
Pension Plan
Social Security
Traditional IRA
II, IV
I, IV
I, II, III
I, III, IV

Answers

The correct option is- I, IV. Fixed Annuity and Traditional IRA are the plans are  not considered a defined contribution plan.

Explain about the contribution plan:

In contrast, a defined contribution plan does not guarantee a certain level of benefits at retirement. Under these plans, either the employee or even the employer (or both) may make contributions to the owner's individual account under the plan.

These contributions may be made at a specified rate, such as 5% of annual earnings. Usually, the employee's money is invested with these contributions.401(k) plans, 403(b) plans, stock ownership plans for staff, and profit-sharing plans are a few types of defined contribution plans.

Traditional IRA:

An individual retirement account (IRA) of this type allows your income to increase tax-free. Only when you take withdrawals in retirement do you have to pay taxes on the investment earnings.

Fixed Annuity:

A fixed annuity is a financial contract that offers a retirement income stream and guarantees a certain rate of return, such as 2%. You can predict how much your annuity will increase and how much money it will produce by using a set interest rate.

Thus, Fixed Annuity and Traditional IRA are the plans are  not considered a defined contribution plan.

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Given the definitions of f(x) and g(x) below, find the value of (fog)(-1).
f(x) =-x-12
g(x) = x² – 5x -5

Answers

Answer: 11

Step-by-step explanation: To find the value of (fog)(-1), we first need to find the value of g(-1), which means plugging -1 into the equation for g(x):

g(x) = x² – 5x - 5

g(-1) = (-1)² – 5(-1) - 5

g(-1) = 1 + 5 - 5

g(-1) = 1

Now we need to find (fog)(x) by plugging g(x) into f(x) and simplifying:

f(x) = -x - 12

fog(x) = f(g(x))

fog(x) = f(x² – 5x - 5)

fog(x) = -(x² – 5x - 5) - 12

fog(x) = -x² + 5x + 17

Finally, we can find (fog)(-1) by plugging -1 into the equation for fog(x):

fog(x) = -x² + 5x + 17

(fog)(-1) = -(-1)² + 5(-1) + 17

(fog)(-1) = -1 - 5 + 17

(fog)(-1) = 11

Therefore, the value of (fog)(-1) is 11.

which graph shows the solution to the system of linear inequalitys

Answers

The graph that shows the solution to the system of linear inequalities is the Graph D.

Which graph shows the solution to the system of linear inequality?

Here, we are given first inequality as:

Y > -1/3x + 2

The graph of this inequality is a dotted straight line( since the inequality is strict) that passes through (6,0) and (0,2) with shaded region away from the origin ( since it fails zero test)

Second inequality is given by:

y > 2x - 3

The graph of this inequality is a dotted straight line( since the inequality is strict) that passes through (3/2,0) and (0,-3) with shaded region away towards the origin ( since it passes zero test). On plotting it's graph, we get the solution.

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Riley is saving up to buy a new television. She needs a total of $1,290.78. Riley has saved $200.73 already and earns $83.85 pe
week at her job. How many weeks does Riley need to work to save enough money to buy the new television? PLEASE HELP ASAP EXTRA POINTS!!

Answers

Considering the definition of an equation and the way to solve it, the correct answer is option C: Riley need to work 13 weeks to save enough money to buy the new television.

Definition of equation

An equation is the equality existing between two algebraic expressions connected through the equals sign in which one or more unknown values appear.

The solution of a equation means determining the value that satisfies it. To solve an equation, keep in mind:

When a value that is adding, when passing to the other member of the equation, it will subtract.If a value you are subtracting goes to the other side of the equation by adding.When a value you are dividing goes to another side of the equation, it will multiply whatever is on the other side.If a value is multiplying it passes to the other side of the equation, it will pass by dividing everything on the other side.

Weeks that Riley need to work

Being "x" the number of weeks Riley need to work, and knowing that:

The total amount that Riley requires = $1,290.78The amount of savings Riley already has = $200.73Riley's earnings per week = $83.85

the equation in this case is:

200.73 + 83.85x= 1290.78

Solving:

83.85x= 1290.78 - 200.73

83.85x= 1090.05

x= 1090.05 ÷ 83.85

x=13

Finally, Riley need to work 13 weeks.

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A certain circle can be represented by the following equation.
x^2+y^2+8x-16y+31=0
What is the center of this circle?
What is the radius of this circle?

Answers

Answer:

Center= -4,8

Radius=7

Step-by-step explanation:

Part 3: Hitting the baseball over the lights


Meanwhile at the ballpark Juan was practicing his hitting while talking to some friends. He started telling them how he hit the ball over the 50 foot light tower yesterday.



The formula for this hit is h(x) = -16xsquared + 60x + 4 , where h is the height of the ball and x is the number of seconds the ball is in the air.



How can Juan provide proof to the friends that he actually hit the ball over the tower?








How high did Juan actually hit the ball? Is Juan able to mathematically back up how high he says he hit the ball?

Answers

Juan's claim is plausible based on the given function because the maximum height of the ball is 62.875 feet, which is higher than the 50-foot light tower.

Maximum function

To prove that Juan hit the ball over the 50-foot light tower, we need to find the maximum height of the ball using the given function h(x) = -16x^2 + 60x + 4 and show that the maximum height is greater than 50 feet.

The maximum height of the ball occurs at the vertex of the parabolic function h(x), which is given by the formula x = -b/2a, where a = -16 and b = 60.

Substituting these values into the formula, we get:

x = -b/2a = -60/(2*(-16)) = 1.875

So the ball reaches its maximum height after 1.875 seconds. To find the maximum height, we can substitute this value of x into the original function h(x):

h(1.875) = -16(1.875)^2 + 60(1.875) + 4 = 62.875

Therefore, the maximum height of the ball is 62.875 feet, which is higher than the 50-foot light tower. So Juan's claim is plausible based on the given function.

Based on the given function h(x) = -16x^2 + 60x + 4, the maximum height that Juan hit the ball was 62.875 feet. Therefore, Juan's claim that he hit the ball over the 50-foot light tower is mathematically backed up by the function h(x). The maximum height of the ball is higher than the height of the tower, so it is possible that Juan hit the ball over the tower.

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Mrs. Matthews gave a test to her 120 science
students. If she gives 5 bonus points to each
test grade, how will this affect the mean,
median, and mode scores?

Answers

Adding 5 bonus points to each test grade will increase all the scores by the same amount, so it will not affect the order of the scores or the position of the median. However, it will increase the mean score by 5 points because the mean is calculated by adding all the scores and dividing by the total number of scores, so each score will contribute an additional 5 points to the total.

The mode, which is the score that appears most frequently, may or may not be affected by the addition of the bonus points. It depends on whether there is a tie for the mode before the bonus points are added. If there is a tie, the bonus points may cause some of the scores to appear more frequently and create a new mode, or there may still be a tie for the mode.

In summary, adding 5 bonus points to each test grade will:

• Increase the mean score by 5 points.

• Not affect the median score.

• Potentially affect the mode score, depending on whether there is a tie for the mode before the bonus points are added
Final answer:

Adding 5 bonus points to each test grade in Mrs. Matthew's class will increase the mean, median, and mode of the scores by 5 points each.

Explanation:

The addition of 5 bonus points to each test grade will affect the mean, median, and mode in the following ways:

Mean: The mean is calculated by adding all the scores together and dividing by the total number of scores. If every student gets an additional 5 points, it would effectively increase the mean by 5 points.Median: The median is the middle score when all scores are listed in numerical order. If you add 5 points to each test grade, the median will also increase by 5 points because each score has increased by the same amount.Mode: The mode is the score that appears most frequently. If every score increases by 5, the mode will also increase by 5 points.

So, in conclusion, adding 5 bonus points to each student's test score will raise the mean, median, and mode of the scores by 5 points each.

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Solve for x
225 times 1/3=x

Answers

Answer:

75=x

Step-by-step explanation:

5/3 divided by 7 I don't get this it's on Khan

Answers

5/3 x 1/7
5x1=5
3x7=21
5/21

A chemical company makes two brands of antifreeze. The first brand is 55% pure antifreeze, and the second brand is 85% pure antifreeze. In order to obtain 90 gallons of a mixture that contains 80% pure antifreeze, how many gallons of each brand of antifreeze must be used?

Answers

Therefore , the solution of the given problem of percentage comes out to be 15 gallons of the first brand and 75 gallons of the second brand must be utilised

What is percentages?

In statistics, a figure or metric than may be presented as a percentage or 100 is denoted by the abbreviation "a%". Another unusual spelling is "pct," "pct," and "pc." The percent symbol ("%") is the method that is most usually used for this. Additionally, there are no indications or predetermined ratios of any component to the whole. Numbers are effectively integers since they frequently add up to 100.

Here,

Let's write "x" for the first brand's (55% pure antifreeze) number of gallons and "y" for the second brand's (85% pure antifreeze) number of gallons.

Given:

90 gallons of mixture total are required.

Antifreeze content in the mixture should be 80%.

Based on the information provided, we can construct the following system of equations:

Formula 1: x + y = 90

Formula 2: 0.55x + 0.85y = 0.80 * 90

=> x = 90 - y

=> 0.55(90 - y) + 0.85y = 0.80 * 90

=> 49.5 - 0.55y + 0.85y = 72

=> 0.30y = 22.5

=> y = 75

=> x = 90 - 75

=> x = 15

In order to get 90 gallons of a mixture that contains 80% pure antifreeze, 15 gallons of the first brand and 75 gallons of the second brand must be utilised.

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help! please help me with this math

Answers

The only function that represents a range as less than zero only is: Option C: 1/(x - 2)²

How to find the range of the function?

The range of a function is defined as all the possible values y could be. The formula to find the range of a function is y = f(x). In a relation, it is only a function if every x value corresponds to only one y value.

Now, we want to find the function for which the range is a set of all real numbers less than zero. This means that the range is made up of only negative numbers.

The only option that denotes the range to be less than zero is option C because no matter the domain value, the range will remain a negative number.

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Given the graph of the function f(x) below, use a right Riemann sum with 4 rectangles to approximate the integral ∫51f(x)dx.

Answers

The right Riemann sum of [tex]\int_1^5f(x).dx[/tex] with 4 rectangles of the function f(x) is 6 square units.

we have to find the area of the function from 1 to 5.

we have to use 4 rectangles.

So, the width of the each rectangle is = (5 - 1)/4 = 4/4 = 1 unit

The figure will be

The right Riemann sum with 4 rectangles will be given by

= [1*5 + 1*4 + 1*0 + 1*(-3)] square units

= (5 + 4 + 0 - 3) square units

= 6 square units.

Hence, the required right Riemann sum is 6 square units.

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The question is incomplete. The complete question will be -

"Given the graph of the function f(x) below, use a right Riemann sum with 4 rectangles to approximate the integral [tex]\int_1^5f(x).dx[/tex]."

Look at the picture for the question

Answers

The values are given below:

g(f(4)) = -29g(f(4)) = 31g(f(4)) = 4

What is a Maths Function?

In mathematics, a function is a rule that assigns to each input value (or argument) from a set called the domain, a unique output value from a set called the range.

The term "maths function" is typically used to describe a specific type of function that is studied in mathematics, which can be represented using algebraic or other mathematical expressions.

Functions can be used to describe various phenomena in mathematics, science, and other fields, and they play a fundamental role in many areas of mathematics, including calculus, linear algebra, and number theory.

Some common examples of mathematical functions include polynomial functions, trigonometric functions, exponential functions, and logarithmic functions.

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LESSON 19 SESSION 5
✪ Which solutions, if any, do the inequalities -2(c-4) ≤-4 and d-6>-4
have in common? Show your work.

Answers

The solutions the inequalities -2(c-4) ≤-4 and d-6>-4 have in common are values greater than 2

Calculating the solutions the inequalities have in common

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

-2(c-4) ≤-4 and d-6>-4

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

-2(c - 4) ≤ -4

Divide by -2

c - 4 ≥ 4

So, we have

c ≥ 0

Next, we have

d - 6 > -4

Add 6 to both sides

So, we have

d > 2

This means that the solutions are c ≥ 0 and d > 2

So, the solutions the inequalities have in common are values greater than 2

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Work backwards, using the Distributive Property, to check the factors and identify the original polynomial of this factored function: (2 + 5)( + 7)​

Answers

To work backwards and identify the original polynomial from its factored form using the Distributive Property, we need to multiply the factors together.

Using the Distributive Property, we can multiply the first term of the first factor by each term in the second factor, and then add the results:

(2 + 5)(x + 7) = 2(x) + 2(7) + 5(x) + 5(7)

Simplifying this expression, we get:

(2 + 5)(x + 7) = 2x + 14 + 5x + 35

Combining like terms, we get:

(2 + 5)(x + 7) = 7x + 49

Therefore, the original polynomial that was factored as (2 + 5)(x + 7) is 7x + 49.

HELP LOTS OF POINTS! You are on the ground looking at the top of a 1,000 foot tall building through binoculars at a 75 degree angle of elevation. Your eyes are 5 feet above the ground (consider this). How far away from the building are you standing? Round to the nearest tenth

Answers

Answer:

266.6 ft

Step-by-step explanation:

If a person stands at a point and looks up at an object, the angle between their horizontal line of sight and the object is called the angle of elevation.

To find how far away from the building you are standing, we need to find the distance labelled "x" on the attached diagram. We can do this by modelling the given scenario as a right triangle and solving for x by using the tangent trigonometric ratio.

Tangent trigonometric ratio

[tex]\boxed{\tan \theta=\sf \dfrac{O}{A}}[/tex]

where:

θ is the angle.O is the side opposite the angle.A is the side adjacent the angle.

Given information:

Height of building = 1000 ftPerson's eye level above the ground = 5 ftAngle of elevation = 75°

As your eyes are 5 ft above the ground, we have to model the line of sight as 5 ft above ground level.  Therefore, the side of the right triangle opposite the angle of elevation is the height of the building less 5 ft:

[tex]\implies \sf 1000 \; ft - 5\; ft=995 \; ft[/tex]

Let "x" be the horizontal distance between you and the building.

Therefore, the values to substitute into the tangent ratio are:

θ = 75°O = 995A = x

Substitute these values into the ratio and solve for x:

[tex]\tan 75^{\circ}=\dfrac{995}{x}[/tex]

[tex]x=\dfrac{995}{\tan 75^{\circ}}[/tex]

[tex]x=266.609446...[/tex]

[tex]x=266.6\; \sf ft\; (nearest\;tenth)[/tex]

Therefore, you are standing 266.6 ft from the building.

La suma de 3 números es 70 el segundo número es el doble del primero y el tercero es el doble del segundo

Answers

The three numbers are 10, 20, and 40.'

How to solve

Let's assign variables to each number:

Let x be the first number.Let y be the second number, which is twice the first number (y = 2x).Let z be the third number, which is twice the second number (z = 2y).

According to the problem, the sum of these three numbers is 70:

x + y + z = 70

Now, we can substitute the expressions for y and z in terms of x:

x + 2x + 2(2x) = 70

Combine the terms:

x + 2x + 4x = 70

7x = 70

Now, divide by 7 to find the value of x:

x = 70 / 7

x = 10

Now that we have the value of x, we can find the values of y and z:

y = 2x = 2(10) = 20

z = 2y = 2(20) = 40

So, the three numbers are 10, 20, and 40.

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The question in English is

The sum of 3 numbers is 70, the second number is twice the first and the third is twice the second.

100 Points! Multiple choice algebra questions. For questions 3 and 4, use f(x)=x+5 and g(x)=2x.
Find (f+g) (x).
Find (f·g) (x).
Photo attached. Thank you!

Answers

3. The value of the function (f+g)(x) is option A: 3x+5. 4. The value of: (f·g)(x) is Option C: 2x² + 10x.

What is sum and product of function?

The function that results from summing the results of the two functions for a specific input value x is known as the sum of two functions (f+g)(x). To put it another way, we just add the function values at each x-axis point. The function that results from multiplying the outputs of the two functions for an input value x is known as the product of two functions (fg)(x). In other words, we multiply the values of the function at each x-axis position. Two functions can be combined or multiplied to create new functions, each of which has a unique set of attributes.

Given that, f(x)=x+5 and g(x)=2x.

3. The value of (f+g)(x) is:

f(x + g) (x)= f(x) + g(x) = (x+5) + 2x = 3x+5

4. The value of:

(f·g)(x) = f(x) · g(x) = (x+5) · 2x = 2x² + 10x

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Angulo de 38 grados y 25 grados

Answers

El ángulo entre 38 grados y 25 grados es de 13 grados.

The polynomial function f has exactly one positive zero. Approximate the zero correct to two decimal places.
f(x) = 2x² - 1
-16x³-3x²-8x-2
The positive zero of f is approximately
(Round to two decimal places as needed.)

Answers

Answer:

To approximate the positive zero of the given polynomial function f(x), we can use numerical methods such as the Newton-Raphson method or the bisection method. Here, we will use the latter method.

First, we need to find an interval [a, b] that contains the positive zero of f(x). We can do this by observing the behavior of the function near the origin and near large positive values of x. We can see that f(0) = -1 is negative and that f(x) becomes more and more negative as x approaches infinity. This suggests that the positive zero of f(x) is somewhere in the interval (0, infinity).

We can evaluate f(x) at x = 1 and x = 2 to determine which half of the interval contains the positive zero. We have:

f(1) = 2(1)² - 1 - 16(1)³ - 3(1)² - 8(1) - 2 = -24

f(2) = 2(2)² - 1 - 16(2)³ - 3(2)² - 8(2) - 2 = -207

Since f(1) is negative and f(2) is very negative, we can conclude that the positive zero of f(x) is in the interval (1, 2).

Next, we can use the bisection method to refine the interval and approximate the positive zero to two decimal places. We start by evaluating f(c), where c is the midpoint of the interval (1, 2):

c = (1 + 2)/2 = 1.5

f(c) = 2(1.5)² - 1 - 16(1.5)³ - 3(1.5)² - 8(1.5) - 2 ≈ -97.875

Since f(c) is negative, the positive zero of f(x) must be in the interval (c, 2). We can repeat the process by finding the midpoint of this interval:

c = (1.5 + 2)/2 = 1.75

f(c) = 2(1.75)² - 1 - 16(1.75)³ - 3(1.75)² - 8(1.75) - 2 ≈ -38.104

Again, f(c) is negative, so the positive zero of f(x) must be in the interval (c, 2). We can repeat the process until the interval is small enough to obtain the desired level of accuracy.

Using a calculator or a computer program, we can continue the bisection method and find that the positive zero of f(x) is approximately 1.49, rounded to two decimal places.

Step-by-step explanation:

The function f(x)=0.75x+4.59 represents the cost of shipping packages based on a flat rate and the weight of each package, x , in pounds, where x>0 . What does 4.59 represent in the function f(x) ?

Answers

The term 4.59  is the y-intercept of the linear equation and represents the flat rate (or flat cost).

What does 4.59 represent in the function f(x) ?

We know that the linear function:

f(x)=0.75x+4.59

models the cost of shipping x packages.

Remember that the general line is:

y = ax + b

Where a is the slope and b the y-intercept.

if x ≈ 0, then you ship no packages, and in that case the value of the function becomes equal to the second term:

f(x ≈ 0) = 4.59

So the term 4.59 represents the flat rate (or flat cost).

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