The area enclosed by the graphs of y = 1/x, y = 1, and x = 3 is rotated about the line y = -1. Find the volume and show steps.

Answers

Answer 1

Answer:

9.852

Step-by-step explanation:

First, Graph all three functions and find where they intersect and the shape that they make through their intersection. Note that since the shape does not touch the y= -1 line, we will use the "washer" method (where the volume equals  [tex]\pi\int\limits^a_b {R(x)\x^{2} - r(x)^{2} } \, dx[/tex].

The next step is to find a and b. Since the function that the area is going to be rotated about is a " y =" equations, the boundaries will be the x coordinates where the three functions intersect, b=1 for (1,1) and a=3 for (3,1).

Next we have to find R(x) and r(x). In this case, R(x) is the difference between the function furthest away from the axis of rotation and the function of the axis of rotation (or visa versa depending on which is on top), and r(x) is the difference between the function closest to the axis of rotation and the function of the axis of rotation (or visa versa depending on which is on top.

For this problem R(x) = 1 - (-1) and r(x) = 1/x - (-1) since when you look at the graph, Y = 1  is further from y = -1 than y = 1/x is, and both functions are on top of y = -1.

Finally plug in R(x) and r(x) and solve either using a calculator or through integration. If you solve through integration you should get [tex]\pi (-2ln(3) + \frac{16}{3} )[/tex].


Related Questions

In circle O. AD and BE are diameters. The measure of arc AB is 55° and the measure of arc CD is 25° B с F D E What is the measure of BC ? 090 O 110 O 100 O 80​

Answers

Answer:

100°

Step-by-step explanation:

the total of all angles around O on one side of AD is 180° (as that would represent a half-circle).

and the sum of the arc angles AB + BC + CD covers the whole 180°.

so, we have

180 = 55 + BC + 25

180 = 80 + BC

BC = 100°

If 14 is added to a number, the result is 40 less than twice the number. Find the number.

Answers

Answer:

Asher should be 61

Step-by-step explanation:

What is the answer? Please simplify!

Answers

Answer:

2/125 or 0.016

Step-by-step explanation:

0.1= 1/10

1/10^3 × 2^-4

2 × 1/5^3

2 × 1/125

2/125

A rectangular prism has a base area of 17 cm², and a height of 5 centimeters. What is the volume of the prism?​

Answers

Answer:

85cm^3

Step-by-step explanation:

Volume = Base Area * Height

17*5=85

Help Picture below problem 17

Answers

Answer:

139°

Step-by-step explanation:

18°+23°+?= 180°{sum of angles on a triangle}

41°+?° = 180°

?° =180-41=139°

is -2^3b^3 + 15c^3/8 z^3 a monomial, binomial, trinomial, or other polynomial.

Answers

It is trinomial because all have power 3

Answer: binomial

Step-by-step explanation: it has 2 terms


Someone pls

.
A
A
A
A
A
A
S

Answers

Answer:

7

Step-by-step explanation:

Degree of a polynomial is a variable's highest exponent

In this expression the degree is 7

Answer:

7

Step-by-step explanation:

If you used

P.E.M.D.A.S

Brainly please I worked so hard for this answer

the product of two consecutive odd number is 143 find those two odd numbers show ll workings

Answers

Answer:

11,13

11×13=143

Step-by-step explanation:

please mark me as brainlest

3 (2a + 6) what is the valur of this exspression when a = 4

please help!!

Answers

2a means = 2 x a

if a = 4

3 x (2 x 4 + 6) = 3 x (8 + 6) = 3 x 14 = 42

Consider the expression 1.1(1.3)x+4Which of the following is an equivalent expression?

Answers

Answer:

the equivalent expression is 1.1(1.3)^4 ×(1.3)^x

Answer:

d

Step-by-step explanation:

i took the test

need help with this question please

Answers

Answer:

your answer is correct

Step-by-step explanation:

Answer:the largest angle has a measure of _____degrees.

Answers

Answer:

depends mostly it'll b 180 degress

Step-by-step explanation:

f(x)=3x^3 + 4x^2 - 6x -7
g(x)= 2x-4
Find (f-g)(x)

Answers

Answer:

f(x)-2x+4

Step-by-step explanation:

f(x)-g(x)

f(x)-g(x)=f(x)-(2x-4)

f(x)-(2x-4) remove parentheses for addition or subtraction

f(x)-2x+4

There are 150 boys and girls playing in the soccer tournament.50 of the students are wearing red.what percent of the of players are wearing red.

Answers

Answer:

1/3 or 33%

Step-by-step explanation:

You can first do: 50/150

Which is 5/15 simplified

And do the quick math:

1/3 or 33%

f(x) = x^1/2 is continuous for all x but not differentiable at x=0. is it True or False?

Answers

Answer:

it's true because the x=0 and that why it must be true FX may be the some I would say it's true

I THINK ITS C BUT PLSS TELL ME IF IM RIGHT


Use a number line to find the value of:

eight tenths plus one eighth equals

A. eight tenths
B. one tenth
C. nine tenths
D. seven tenths

Answers

Answer:

it is .925 which is very close to 9/10 so C would be correct

Step-by-step explanation:

Answer:

0.925 so I would pick option C.

I did half the answer but what is e= ?​

Answers

Answer:

See below.

Step-by-step explanation:

e=12c+6

e=12(1)+6

e=12+6

e=18

e=12(2)+6

e=24+6

e=30

e=12(3)+6

e=36+6

e=42

e=12(4)+6

e=48+6

e=54

-hope it helps

A manager drew this box-and-whisker plot to represent the number of minutes each of the company's 360 employees took on their break.


Box-and-whisker plot ranging from 34 to 58 with ticks at increments of one half. Plot defined by points at 35, 37, 41, 49, 55


How many employees took a break that lasted between 37 and 41 minutes?


Select from the drop-down menu to correctly complete the statement.


About (blank) employees took a break that lasted between 37 and 41 minutes.

Answers

Answer:

90

Step-by-step explanation:

37 and 41 is only in the 25% percentile.  

360 X .25 = 90

Plus, I took the K12 test and got it right.

The number of employees took a break that lasted between 37 and 41 minutes is 60.

What is the unitary method?

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value. Unitary method is a technique by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit. It is a method that we use for most of the calculations in math.

We know that;

There are 360 employees in total and that they are evenly distributed along this plot. Therefore, we can divide 360 by the width of this plot to find how many employees are represented by one unit on this plot. The width of this plot is 58 - 34 = 24 units.

So, 360 / 24 = 15

This means that for every unit on this plot, there are 15 employees who took a break with that duration.

Now we can multiply this number by the width of the box to find how many employees took a break between 37 and 41 minutes. The width of the box is 41 - 37 = 4 units. So,

15 * 4 = 60

This means that there are 60 employees who took a break that lasted between 37 and 41 minutes.

Therefore, by the unitary method the answer will be 60 employees

Learn more about the unitary method, please visit the link given below;

https://brainly.com/question/23423168

#SPJ3

Which expressions are equivalent to 4b

Choose all answers that apply:


b + 2(b + 2b)


3b + b


2(2b)


2(b + 2b) - 4b
ANSWER ASAPP PLSSSSSSSSSSSSSSSSSSSSSSSSSSs

Answers

[tex]3b+b=4b\\\\2(2b)=4b\\\\[/tex]

Sam buys a tent priced at $50 if the sales tax is 5% how much tax will Sam pay

Answers

tax will be = 50 x 5% = $2.5

PLEASE HELP!!! I JUST NEED A STEP-BY-STEP!!!!!!

HINT: integrate with respect to y first (it is an easier approach)
∫∫5x sec^2(xy) dA; R={(x,y): 0 ≤ x ≤ π/6 , 0 ≤ y ≤ 2

[Answer] -5/2 ln(1/2)

Answers

Answer:

Step-by-step explanation:

[tex]=5\displaystyle\int_{0}^{\pi/6}dx\displaystyle\int_{0}^{2}x\sec^2(xy)dy\\=5\displaystyle\int_{0}^{\pi/6}dx\displaystyle\int_{0}^{2}\sec^2(xy)d(xy)\\=5\displaystyle\int_{0}^{\pi/6}dx\tan(xy)|_{y=0}^{y=2}[/tex]

[tex]=5\displaystyle\int_{0}^{\pi/6}\tan(2x)dx\\=-\frac{5}{2}\ln\cos(2x)|_{0}^{\pi/6}\\=-\frac{5}{2}[\ln\cos(\pi/3) - \ln\cos(0)]\\[/tex]

[tex]=-\frac{5}{2}\ln{\frac{1}{2}[/tex]

Solve the following equation for p: 6/p=x+a

Answers

[tex]\dfrac 6p = x+a\\\\\implies \dfrac 6p \times\dfrac 16 = (x+a) \times\dfrac 16 ~~~~~~;\left[\text{Multiply both sides by}~ \dfrac 16 \right]\\\\\implies \dfrac 1p = \dfrac{x+a}6\\\\\implies p= \dfrac{6}{x+a}~~~~~~~~~~~~~~~~~~~~;[\text{Cross multiply}][/tex]

Given f(x) and g(x) = f(x) + k, use the graph to determine the value of k.

Answers

Answer:

The answer should be 3 :)

Step-by-step explanation:

Pick a point on f(x) and count up until you hit the g(x) point :)

When i did this, i got 3 :)

Have an amazing day!!

Please rate and mark brainliest!!

The following refers to a purchase of a machine by a company on January 1, 2021:

Salvage Value: $7,500

Life: 6 years

Desired Rate of Return 4%

Interest Compounded: semi-annually

Maximum amount the company can pay $32,348



What is the semi-annual net cash flow the company must achieve in order for the purchase to be made?

Answers

The semi-annual net cash flow that the company must achieve in order for the purchase to be made is $5041.

How to calculate the cash flow?

Maximum amount that can be invested = $32348.

Less: Present value of salvage value = $5927

Present value of cash inflow = $32348 - $5927 = $26421.

Net cash flow will be:

= $26421 / PV factor

= $26421/5.242

= $5041

In conclusion, the correct option is $5041.

Learn more about cash flow on:

https://brainly.com/question/735261

When using synthetic division you must switch the signs in the divisor

Correct answer:

True

False


















b a dddddddies hmuuuuuuuuuuuu XD

Answers

True, you switch the sign when you write the divisor so that you can add

Which phrase best describes the relationship indicated by the scatter plot? A. Constant correlation B. negative correlation C. Positive correlation D. no correlation

Answers

B. negative correlation

How many different ways can 6 different positions be filled by 12 applicants?

Answers

Answer:665280

Step-by-step explanation:

12•11•10•9•8•7=665280

Solve for x: ___ degrees.

Answers

Answer:

63

Step-by-step explanation:

This is a cyclic quadrilateral, meaning that its opposite angles are supplementary. So, x=180-117=63.

A suit is on sale for 72% off. The sale price is $263.20.
What is the regular price?

Answers

Answer:

940

Step-by-step explanation:

To find the original price of something that been discount do the following:

Subtract the discount from 100 to get the percentage of the original price.Multiply the final price by 100.Divide by the percentage in Step One.

Or we can do the following:

We shall consider the original price as x; hence the discount can be considered as (x−263.20). We can write the equation:

x · 72/100=x - 263.20

x · 18/25 = x - 263.20

Multiply both sides by 25

18x = 25(x - 263.20)

Open the brackets.

18x = 25x-6580

Add 6580 to each side.

6580 +18x = 25x

Subtract 18x from each side.

6580 = 7x

Subtract 7x from each side.

x = 940

Check Answer:

940 * 72% = 676.80

940 - 676.80=263.20

Hence, the regular price is 940.

~lenvy~

Step-by-step explanation:

The sale price ( The marked price ) :- $263.20

Discount :- 72%

Discount :- marked 100 ,Discount 72 ,Seliing ( Regular ) 28

Regular price :- 263.20 × 28 / 100

$ 73.69

You need to buy insulation to cover the inside of a shipping container. The container is a rectangular prism that is 15 feet long, 8 feet wide, and 7 feet high. How much insulation do you need to buy if you want to insulate all the inside surfaces of the shipping container except the floor?

Answers

Answer:

  442 ft²

Step-by-step explanation:

The amount of insulation needed is the amount that covers the area of the side walls and the ceiling. The area of the side walls is the product of the perimeter and height. The area of the ceiling is the product of length and width.

__

Lateral area = Ph = 2(L+W)h = 2(15 ft +8 ft)(7 ft) = 322 ft²

Ceiling area = LW = (15 ft)(8 ft) = 120 ft²

__

Insulation needed = lateral area + ceiling area = 322 ft² +120 ft²

Insulation needed = 442 ft²

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The stage directions are very important in this act. A lot happens without dialogue. If you had to read this act without the stage directions, what events would you miss? What effect would it have on your understanding of the play? If a fast-moving car making a loud noise approaches and moves past a person, which of the following will happen as the distance between the two increases?A) The pitch and frequency of the sound waves reaching the person's ear will remain unchanged.B) The pitch of the sound being heard by the person will appear to be lower than the pitch of the source.C) The frequency of the sound waves reaching the person's ear will be greater than the frequency of the waves leaving the car.D) The pitch of the sound being heard by the person will appear to be higher than the pitch of the source. Write an equation for the graph in terms for xY= Theo's older brother, Antonio, was learning carpentry, and over the past few months, he had transformed the shed into his carpentry workshop. Theo always looked up to Antonio and tried to be like him. He was fascinated by all the wonderful objects Antonio had carved from wood, and longed to try his hand at carpentry too. But every time he asked Antonio if he could operate one of his cool carpentry tools, Antonio's response was always the same. "You're too young to use these tools, Theo. They might look fun to use, but trust me, they are not easy to operate." That day, Antonio was building an intricate model of a house. He had been working on it for weeks, and the model was nearly complete. Suddenly, Antonio realized that he needed to run to the store to buy more nails. As soon as he left, Theo approached Antonio's work area and began to look around with glee. When his eyes fell on the power drill, which was still connected to the power socket, he smiled mischievously. He picked it up and switched it on, aiming it at a piece of wood lying on the table. But the drill was heavier than he imagined, and he could not hold on to it as it vibrated powerfully in his hand. Panicking, Theo dropped the drill and in his haste, he tripped over the wire on the floor. Losing balance, he went crashing into the table, knocking over Antonio's model house as he went down. It fell to the floor and broke into pieces. As Theo stared in shock at the mess he had created, Antonio came back into the shed. Theo immediately began to apologize. "I too was curious and brash when I was your age, little brother. But experience has taught me to be more careful and responsible. When you're older, I'll teach you to operate these tools," Antonio said. Theo apologized again and helped his brother clean up the mess.What is the best summary of the passage? A. Theo watches his elder brother Antonio making things in their shed and asks Antonio to let him use his carpentry tools, but Antonio does not allow him to use them. Theo tries to use Antonio's power drill when he is away, and destroys Antonio's model house. Theo is worried that his brother will be upset. B. Theo is fascinated by his older brother Antonio's carpentry tools. One day in Antonio's absence, Theo plays with his power drill and ends up breaking a model house and making a mess. Theo apologizes to Antonio, who advises his younger brother to be careful and operate these tools when he is older. C. Theo loves watching Antonio make beautiful things using his modern carpentry tools, and longs to use the tools himself. But Antonio tells him that the tools are not easy to operate. However, when Antonio is away, Theo plays with a power drill, drops it on the floor, and destroys Antonio's model house. D. Theo watches his brother Antonio make things in his carpentry workshop. 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