# Calculus (Answer Check)

85,687 results, page 37

### English

Generally, any sentence that contains research-based information must include a three-part in-text citation that lets readers know the source of the information. True False I sat True. Please check my answer.

### World History (Check Answer)

Which aspect of early chavin culture do archaeologists think influenced the later peoples of Peru? Political Structure Canals and Terraces Social Hierarchy Arts and Religion Is it Arts and Religion?

### Physics PLEASE

I'm trying to solve this problem Calculate (a) how long it took King Kong to fall straight down form the top of the Empire State Building (380 m high), and (b) his velocity just before "landing". My teacher said try and rearagne this equation for t X = Xo + Vo t + 2^-1 a t^2 ...

### SCIENCE GRADE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

If you had a piece of magnet and you stuck it to an iron nail, and you stuck it to a small washer. How would the washer stick to the iron nail.Please check to see if I'm write! The piece of magnet gets attracted to iron objects the iron nail.the iron nail sticks to the magnet....

### Chemistry

Element X and fluorine react to form two different compounds. In the first reaction 0.480g of X reacts with 1.000g of F. In the second, 0.960g of X reacts with 1.000g of F. What are the possible formulas for the two compounds? (Multiple choice) a. XF (for 1st compound) X2F2 (...

### Algebra

Ok a few questions I want to check answers on - -x+4-9x+3¡Ý 7(x-2) -10x+7¡Ý7x-14 -10x-7x¡Ý7x-7x-14 -17x¡Ý-21 -17x/-17¡Ý-21/-17 x¡Ý21/17 or x¡Ü21/17 ?? One I do not understand at all - The linear equation y=3x-5 graphs as a horizontal/vertical/diagonal line)choose...

### Calculus

Consider an infinite series of the form (+-)3(+-)1(+-)1/3(+-)1/9(+-)1/27(+-)....(+-)1/3^n(+-)... The number 3,1, etc. are given but you will decide what the signs should be. a)Can you choose the signs to make the series diverge? B)Can you choose the signs to make the series ...

### Math - please check me

Flor is putting a fence around a field. The field is rectangular and measures 9.84 yards (yd)long and 18.39 yd wide. How much fence must Flor purchase? answer: 28.23 yd Rainfall for the first 3 months of 2004 was recorded at 2.75, 1.97, and 1.59 inches(in). If the normal ...

### Maths

given (e^x)sin3x = Im((e^x)(e^i3x)) Integrate (e^x)sin3x.dx You can just take the imaginary part of the integral of ((e^x)(e^i3x))= e^([3i +1)x] which is IM(3i +1)e^(3ix + x) = IM (3i +1)e^x*e^(3ix) = IM {(3i +1)*e^x* [ cos (3x) + i sin (3x)] = e^x* sin (3x)+ 3 e^x cos (3x) ...

### Calculus

An object at rest begins moving horizontally on the x-axis, starting at position x(t) = 0 feet at time t = 0 seconds.Suppose, after exactly 2 seconds we measure the position of the object to be 3 feet to the right of the origin AND measure the object to be moving to the ...

### Chemistry

Ethanol boils at a temp. of 78.29 degrees C. What amount of energy, in joules, is necessary to heat to boiling and then completely vaporize a 23 g sample of ethanol initially at 12 degrees C? I know that the molar enthalpy heat of vaporization is 35.56 kJ/mol and the specific ...

### Math ~ Check Answers ~

Explain how to write a function rule from the table below. Then write a function rule. X: 2 | 4| 6 | And: 1 | 0 | -1 | My Answer: y = -1/2 x But, -1/2 (2) = -1, and y(2) = 1, so we need to add 2 at the start. So, y = 2 - 1/2 x

### English

Please check my answer There was one student still taking the exam when the bell rang. Student is the subject and exam is the simple subject.

### Physics Check

How much does it cost to operate a 1.0-W electric clock for a year if electricity cost $0.05/k Wh? I think the answer is =$0.44 a year with the calculations of 1.01*24hrs*365=8,760Whr/1000kw = 8.76kWh 8.76 kWh * 0.05 = 0.44 a year. Is this correct?

### math

Check ..... 1. Find 10% of $500 and 10% of $300.Since 6% is a little more than half of 10%, what is half of 10% of 500? Add this with 10% of 30, since 8% is close to 10%. Does you answer make sense ?

### Physics

Does it take twice the work to stretch a spring 2cm from its equilibrium position as it does to stretch it 1cm from its equilibrium position? Yes it does. (Just want to double check my answer)

### Health care

Please check my answer thanks :) Mary needs Medicaid coverage. Where should she start looking for inforamtion to determine her eligibility ? 1. The local hospital social servies dept 2. Where she works 3. The federal government Web site 4. The state in which she lives I am not...

### Caring for School-Age Children

When properly executed, the behavior management strategy known as time-out becomes A.a positive reinforcer B.more effective than logical consequences C.a conversation betwen child and adult D. suitable punishment for misbehavior I chose the letter A. Can you check my answer.

### SS7R - HW Question Check

What is the Proclamation of 1763???? To control the colonists and prevent wars with Native Americans (such as the Pontiac War) the British passed the Act. Does that define it!!?!??! Please don't ban me, ignore me, and no rude comments thank you! I got this answer from the ...

### LA

Which quote from the selection shows that a character may be experiencing internal conflict? No one, It seems, had though to check a weather forecast. The last wisps of light dissolved. James fussed at the others, who ignored him. Arturo sighed heavily and wracked his brain to...

### Calculus

Consider the function f(x)=3cosx−cos^(3)x for 0<x<2π. For the following questions, write inf for ∞, -inf for −∞, U for the union symbol, None if no answer exists, and separate by a comma if more than one answer exist. a.) The x-intercepts are...

### A.R.I.T.S.(please check Ron)

do you know the answer: 1. Does the name Alaiyo fit Beneatha? thanks... brie:'} Thank you for using the Jiskha Homework Help Forum. If you are still referring to "A Raisin in the Sun," Asagai calls Beneatha gAlaiyoh, which in Yoruba means gOne for Whom Bread Is Not ...

### Health

please check my answer thanks True or False An elderly man tells you that he's experirncing urinary frequency with scanty urine volume per bathroom vist Hormonal therapy would be part of the diagnostic process for this patient. I said False

### Teaching dogs tricks

please check my answer thanks Animal performances for which payment is involved are regulated by the A. Food and Drug Administration. B. Animal Actors' Guild. C. American Society for the Prevention of Cruelty to Animals. D. United States Department of Agriculture. I say C

### Math (URGENT)

Use calculator - answer correct to 3 places. a. 3sqrt17 + 2sqrt15 / 5sqrt7 = 10.644 b. 2sqrt11 - 3sqrt2 + 15sqrt10 + 5sqrt5 = 61.005 c. 4.3sqrt6.9 / 1.7sqrt57 = 50.163 Can someone check my answers? I keep getting the feeling these are not the right answers. Thank you.

### English

Most of jimenez high school experiences were positive except a speaking at the rotary club b all c performing in the junior scandals d participating in los santitios club e running fot student body president my answer is a i just want to check it

### English

Which of the following is an example of primary research? A.Searching the Internet for nutritious recipes B. Asking a reference librarian for specific information C. Calling a dietician for information about a low-carb diet D. Reading an interview in a professional journal My ...

### Chemistry(Answer check)

A 0.1052 g sample of copper metal is dissolved in 55 mL of concentrated HNO3 to form Cu2+ ions and then water is added to make a total volume of 208.5 mL. (Calculate the molarity of Cu2+.) 0.1052g*63.546/6.022e23 did I set it up right?

### history

In What ways did Neolitic People Dramatically improve their lives? Please check my answer.. the change over from hunting and gathering to farming and herding took place not once but many times. Neolithic people in many parts of the world independently developed agriculture

### Math (check answers)

1)Identify the sampling method. You want to determine the number of text messages students at your school send in a month. You go to the cafeteria and randomly ask students as they come out of the lunch line. A)Random*** B)Systematic C)Stratified D)None of these. Would the ...

### @ elena - intro to physics

I posted this question earlier and thank you for respnding, but the answer you give me was incorrect. I try looking at hw you solve and cant find the mistake but when when I check your answer it said it was wrong. Can you please look over it again, I greatly appreciate it a ...

### math check my answer please

What is the smallest perfect cube that has a factor of 4725? Factors of 4725 are 3,3,3,5,5,7 I have 3^3 and 5^2 and 7. So I need 1 more 5 and 2 more of 7 So: 3^3*5^3*7^3 = 1157625 When I cube root 1157625 it is 105. So is this the answer? The smallest perfect cube that has a ...

### Science/Health

please check my answer thanks True or False You spleen helps in blood clotting. If imparied this will affect your blood clotting ablity. I said true

### Math

What are the odds against getting three heads in three successive flips of a coin? Odds against A = (1 – 3/6)/ (3/6)= 3/5 = 3::5 Could someone check my answer and correct me if I need it please

### Hector >> history

I've deleted your 28-question test. You posted no answers, and we HELP with HOMEWORK. We do not answer test questions. If you post two or three of the questions and your answers, we'll be glad to check them for you.

### intermediate algebra-check my answer

Find the equation of the line. find equation of form y=ax+b, where a is slope, and b is intercept, which passes through points (x1, y1) = (-8, -6) and (x2, y2) = (0, 0) slope 0-(-6)/0-(-8)= 3/4 how would I write it? y=3/4x or y=3/4x+0 ?

### Math(check answer)

A bag contains 9 green marbles and 11 white marbles. You select a marble at random. What are the odds in favor of picking a green marble? A. 9:20 B. 2:9 C. 11:9 D. 9:11 (I think its a.)

### Medicare Part B

Please check my answer True or False Medicare part B involves supplemental medical insurance I said True

### Practice Exam Calculus

The radius of a sphere was measured to be 20cm with a a possible error of 1/5cm 1).Use linear approximation to estimate the maximum error in the calculated surface area. Leave your answer in terms of pi. 2).Use linear approximation to estimate the maximum error in the ...

### calculus

limit as x approaches 3 where f(x)=6x+2 Find a formula for δ such that for any ε > 0, |f (x) - 20| < ε if |x - 3| < δ. (In your answer, use the word "epsilon" instead of the symbol ε.) I have no idea how to do this? Please help!!!

### Calculus

I need help with finding first and second derivative--simplify your answer. Y=xtan(x) I solved first derivative xsec^2(x) + tan(x) I don't understand how to get the first...can someone show me the steps with explanation?

### Calculus

Find a power series, centered @ x=0, for function f(x)=x/(1+2x). I know this is a maclaurin series, but my work doesn't get the right answer. Can you please show steps? Also,do all power series start with a 1, as in (1+2x+4x^2+...)? Thanks in advance!

### Calculus

Find a power series, centered @ x=0, for function f(x)=x/(1+2x). I know this is a maclaurin series, but my work doesn't get the right answer. Can you please show steps? Also,do all power series start with a 1, as in (1+2x+4x^2+...)? Thanks in advance!

### Calculus and vectors

Verify please and thank you~ 1. Does the line (x-7)/3=(y+8)/6=(z+4)/5 and the point P(10,-2,1) determine a plane? Answer: Yes, it is a plane because when I substituted the point P(10,-2,1) into the equation, I got the coordinates (1,1,1) If the coordinate became to be (0,0,0) ...

### Calculus

For the function f described by the following table, estimate ç40 0 f(x)dx using the following. Enter each answer as a sum to show your work. 5 left rectangles 5 right rectangles 5 midpoint rectangles x 0 4 8 12 16 20 24 28 32 36 40 y 7 -46 -50 45 -7 -26 23 -3 18 -24 19

### Calculus

The position function of a particle in rectilinear motion is given by s(t) s(t) = t^3 - 9t^2 + 24t + 1 for t ≥ 0. Find the position and acceleration of the particle at the instant the when the particle reverses direction. Include units in your answer.

### check?

1. Using the same shape of furniture is an example of which of the following? modern ----- my answer sleek uniform colonial 2. Taking exact measurements of a room is not as important as choosing a style that the client likes. True False ---- my answer 3. Why can trendy items ...

### calculus

Find the area of the largest rectangle (with sides parallel to the coordinate axes) that can be inscribed i nthe region enclosed by the graphs of f(x)=18-x^2 and g(x)=2x^2-9. Is it equal to about 67.67? I have no idea finding the answer by using max or min. Can anyone please ...

### Calculus

The base is an equilateral triangle each side of which has length 10. The cross sections perpendicular to a given altitude of the triangles are squares. How would you go about determining the volume of the solid described? The textbook answer is 500/3(sqrt3) However I got 250 ...

### ALGEBRA 1

CAN SOMEONE PLEASE CHECK TO SEE IF I HAVE DONE THESE CORRECTLY. Thanks for your help. Solve by completing the square 1. X^2-6x=16 X^2-6x + (-6/2) ^2=16+ (-6/2) ^2 X^2-6x+36/4= 16+36/4 (X-6/2)=100/4 X-6/2= +or - 10/2 X=6 + or - 10/2 X=-4, X=8 2. 2x^2-3x+1 2x^2-3x=-1 X^2-3/2x=-1...

### math

An investor received a check in the mail that was for 6 percent of the amount invested. if the amount invested was $450, what was the amount of the check ?

### MATH

An investor received a check in the mail that was for 6 percent of the amount invested. if the amount invested was $450, what was the amount of the check?

### essay please check

ok can you check what i have on my essay

### Calculus

Suppose the integral from 2 to 8 of g of x, dx equals 5, and the integral from 6 to 8 of g of x, dx equals negative 3, find the value of the integral from 2 to 6 of 2 times g of x, dx . 8 MY ANSWER 12 16 4

### Calculus

If y = 18 - 3x, what is the maximum value of the product 2xy? A. -3 B. 0 C. 3 D. 6 E. 54 I found that the value of the maximum occurs at x = 3, but that the value itself is 54. Is E the answer?

### Calculus 3

The ceiling of a building has a height above the floor given by z = 20 + 1 4 x, and one of the walls follows a path modeled by y = x3/2. Find the surface area of the wall if 0 ≤ x ≤ 40. (All measurements are in feet. Round your answer to two decimal places.)

### Calculus

A particle moves along line segments from the origin to the points (3, 0, 0), (3, 3, 1), (0, 3, 1), and back to the origin under the influence of the force field F(x, y, z) = z2i + 5xyj + 4y2k. I have tried multiple times to solve this problem but the answer is still not right.

### Calculus

A particle moves along line segments from the origin to the points (3, 0, 0), (3, 3, 1), (0, 3, 1), and back to the origin under the influence of the force field F(x, y, z) = z2i + 5xyj + 4y2k. I have tried multiple times to solve this problem but the answer is still not right.

### Calculus III

What is the velocity vector of a particle traveling to the right along the hyperbola y=x−1 with constant speed 1 when the particle's location is (4, 14). (Use symbolic notation and fractions where needed. Give your answer in the form of comma separated list of i, j ...

### calculus

Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places where appropriate.) tan θ = −square root of 3 answer in radian and please use the k integer

### Metaphors

Find a metaphor --------------------------------------- DREAMS Hold fast to dreams, For if dreams die, Life is a broken-winged bird That cannot fly. Hold fast to dreams, For when dreams go, Life is a barren field Frozen with snow. -Langston Hughes !. What is the first meaphor ...

### Calculus - another question

"Find the absolute minimum value of the function f(x) = x ln(x)". I know that one of the critical values is 1 (domain restriction). Am I right? So I did the derivative, and got 1+ ln(x), but I cannot figure out the critical values, because ln(x) can't equal -1... Am I doing ...

### CALCULUS

a. for y= sinx y=0 and x=pie/2 if each cross section is an equilateral triangle perpindicular to the x axis what is the total area? b.also same question except triangles are perpindicular to y axis answer's are appreciated but i need the work more.

### calculus

If x^{2} + y^3 - x y^2 = 5, find dy/dx in terms of x and y. Using your answer for dy/dx, fill in the following table of approximate y-values of points on the curve near x=1, y=2. Finally, find the y-value for x=0.96 by substituting x=0.96 in the original equation and solving ...

### Calculus

Money is deposited in an account for which the interest is compounded continuously. The initial investment in the account is $2000 and the annual interest rate is 14%. What is the time required for the balance to double? Round your answer to three decimal places.

### Calculus

Determine the convergence or divergence of the series. Find the limit. Indicate the test that was used and justify your answer by showing evidence why the test succeeds or fails. Sigma (lower index n = 1; upper index infinity) 12/[n(n+3)]

### calculus

I'm having trouble with a geometric series problem. Determine if the infinite summation of (-3)^(n-1)/4^n converges or diverges. If it converges, find the sum. So the answer says that sigma -3^(n-1)/4^n = 1/4 * sigma (-3/4)^(n-1) How did they factor out the 1/4? My algebra is ...

### Calculus Help Please!!!

Verify the given linear approximation at a = 0. Then determine the values of x for which the linear approximation is accurate to within 0.1. (Enter your answer using interval notation. Round your answers to three decimal places.) ln(1 + x) ≈ x xE

### calculus

Sketch the region in the first quadrant enclosed by y=6/x, y=2x, and y=.5x. Decide whether to integrate with respect to x or y. Then find the area of the region. need final area as answer please, and step would be helpful also if you can post.

### chemistry(check my answer)

From the Standard Potential Table in your general chemistry textbook: Which reaction has been chosen as the 'standard' against which every other reaction is measured? A. 2H+ + 2e–H2 B. Li+ + e–Li C. O2 + 4H+ + 4e–2H2O D. F2 + 2e–2F– E. H2 + 2e–2H– is it A

### SS7R - HW Qs. Check

TRUE OR FALSE When the settlers who favored slavery met settlers who were against slavery in Kansas, much fighting and killing resulted. answer - false am i correct?????

### Math

Please Check My Answer I don't know if they are right or wrong and if they are wrong can u give me the correct answers. ? Thanks PS: The answers are the * one's. 1) 2/3 = 12/x x= 18 x= 12 x= 36 x= 8 **************** 2) 6/11 = 84/x x= 40 ************** x= 120 x= 254 x= 154 3) ...

### Language Arts

The man quickly but carefully opened the oyster’s hard shell. A. quickly B. but C. carefully D. opened I think the answer is B but i am not sure. Can you check this and explain what a conjunction exactly is. Thanks!

### Math

Write each rate as a unit rate. 180 passengers in 16 buses 180/16=11.25/1 11.25 passengers per bus Could you please double check my answer to see if I have it right.

### Science - Please Check

Consider a wetland ecosystem. In this ecosystem are two species: a small fish species and a wading bird species that feeds on the small fish as its main source of food. Oxygen levels are a limiting factor. Suppose that the local temperature changes in favor of greater oxygen ...

### math check

Consider the approximately normal population of heights of male college students with mean ì = 69 inches and standard deviation of ó = 4.6 inches. A random sample of 25 heights is obtained. (b) Find the proportion of male college students whose height is greater than 69 ...

### Calculus

A rectangular piece of tin has an area of 1334 square inches. A square tab of 3 inches is cut from each corner, and the ends and sides are turned up to make an open box. If the volume of the box is 2760 cubic inches, what were the original dimensions of the rectangular piece ...

### Math Check

Can someone check my answers? Thanks! Tell whether the system is inconsistent OR dependent. 1.) -7x+6y=-4 14x-12y=8 2.) 3x-y=7 -6x+2y=8 My answers: 1.) inconsistent 2.) Dependent

### Agility Training

Please check my answer thanks :) What is a good rule to follow for training a dog in agility jumps? A. Start with low jumps and gradually increase the height to the proper level. B. Begin by conditioning the dog when it's approximately 18 months old. C. Start by having the dog...

### Math 7 - HW Question Check (Q2)

12. Which number is an irrational number? a) square root 2 b) - 4/3 c) 1.8 (there is a line above 8) d) - square root 8 Answer- D Am I correct ?

### L.A. Check answer

Identify the direct object in the following sentence. Aunt Donna made a sandwich for you. a. Donna b. made c. Sandwich d. You***

### math

Could someone please check my math questions? any help will be greatly appreciated! Questions~ 16. A car’s speed before a sudden stop can be estimated by the formula S = √(30gk) , where S = speed of the car in mph, g = drag factor, and k = length of skid mark in feet. ...

### math

Could someone please check my math questions? any help will be greatly appreciated! Questions~ 16. A car’s speed before a sudden stop can be estimated by the formula S = √(30gk) , where S = speed of the car in mph, g = drag factor, and k = length of skid mark in feet. ...

### check math

Here are my answers. Can you check if I got the right answers? Thank you! solve for x, where x is a real number. x^2+3x-4=14 x=6,3 (x^4-1)/(x^3)=0 x=1 (x-5)^2=9 x=2,8 2x^2+5x=8 x= [-5+/-sqrt(89)]/4 for first one x=-6 or x=3, factors are (x+6)(x-3) second... also x=0 third ... ...

### algebra 2

Would some one look at these problems and see if I got them right Thanks Just let me if they are wrong so I can go back over them 1.Write in simplest form 48/56 A. 6/7 2.Multiply 8x^3/5 *10/x^3 A. 16/x^4 3.Divide 4/x^7 / 12/x^3 A. 1/3x^2 4. divide x^2-36y^2/5x^2+30y / (x^26xy...

### physics

please check my answer An electron moves north at a velocity of 9.8 * 10^4 m/s and has a magnetic force of 5.6 * 10^-18 N west exerted on it. If the magnetic field points upward, what is the magnitude of the magnetic field? F=BqV F= 5.6 * 10^-18N q= 16 * 10^-19C V= 9.8 * 10^4 ...

### algebra

could someone check these answer please? solve the following proportion for x. x/8=5/3=0 rueben drove 300 miles using 14 gallons of gas, at this rate, how many gallons would he need to drive 210?= 40.3 gallons solve for v; v^2+v-30=0=v=-6,5 thanks

### Math (please check my answer)

he figure below shows two triangles. Which statement about the triangles is true? i.imgsafe(.)org/c6dcf267d1.jpg The triangles are congruent by: 1. AAS<<< 2. ASA 3. SAS 4. They are not congruent

### Math Probability

You mix the letters M,A,T,H,E,M,A,T,I,C,A and L, thoroughly, Without looking , you draw one letter. Find the probability P(A). Write the probability as: A) fraction in simplest form B) a decimal C) a percent there are 3 letter A"s, so my answers are A)1/4 B).25 C) 25% can you ...

### Social Studies

Could you check these: Match each term with its definition by writing the correct letter on the blank. Here is the following word bank A. imperialism B. colony C. protectorate D. direct rule E. annex F. sepoys G. viceroy H. indigenous I. creoles J. mestizos K. indirect rule L...

### Health care

Please check my answer thanks :) You need to speak to someone about additional coverage to Medicare Parts A and B Blue Cross and Blue Shield would be the best organization to contact. True or False I picked True

### math in topics

how many new are needed on campus to prevent students from waiting in long lines for academic advising. 1) understand the problem 2) devise a plan 3) carry out the plan and solve the problem 4) look back and check the answer

### early childhood language arts

1. Early childhood program transitions: A. Are all basically the same B. Are private family issues C. Require team collaboration D. Are most important in kindergarten........... I choose A........... Can someone please check my answer

### Social Studies 8R - HW. Qs. Check

Why did many freedmen and poor whites become sharecroppers? Answer - Some large planters had held onto their land and wealth through the war. Now they had land but no slaves to work it. am i correct???????????

### History help: check answer

5. What issue led to the construction of the Berlin Wall? A.) new American intervention in Europe *B.) Soviet attempts to control all of Germany C.) the removal of U.S. troops from Berlin *D.) U.S. refusal to recognize a divided Germany Not sure if it's B or D.

### math 1 question --- pls check my work!

ok, did i do this right? (is this the right answer) Find the lateral area for the given cylinder. Use 3.14 for and round to the nearest whole number. (1 point) 144 yd^2 288 yd^2 2,712 yd^2 904 yd^2 i think its D, 904??

### Chemistry(please check my answer)

Among the following, which is an oxidation-reduction reaction? A. Na2S + CaCO3 → CaS + Na2CO3 B. 2HNO3 + Mg(OH)2 → Mg(NO3)2 + 2H2O C. H2 + F2 → 2HF**** D. 3Ba(OH)2 + 2H3PO4 → Ba3(PO4)2 + 6H2O

### Math question

A cone-shaped container has a height of 9 in. and diameter of 2 in. It is filled with a liquid that is worth $2 per cubic inch. What is the total value of the liquid in the container? Use 3.14 for π . Enter your answer in the box. I think it's 18.84 can someone check my work?

### math

hi I reposted this question to see if I would get the answer the person who posted this one last time says that 9sqrt3 is wrong (and I check if they were right) do here is the question again Given: ∆PQR, m∠R = 90° m∠PQR = 75° M ∈ PR (meaning that m in on segment PR...