Calculus (Answer Check)

89,119 results, page 36
  1. English

    Thank you for your corrections. Can you check these questions and answer them (if you can). 1) Do you happen to know the name of a website where I can improve my English speaking and listening skills? 2)I wonder if it would be possible to talk to some
  2. statistics

    Give an estimate for each expression in Exercises, Then state whether you believe that the exact answer is greater than or less than the estimate. Explain how you decided. Use a calculator to check the accuracy of your estimate. 978 X 66
  3. Science please check my answer

    Which of the following fossil types is best described as forming when minerals replace all or part of an organism's body? A) A mold B) A petrified fossil*** C) A cast D) A trace fossil
  4. science(check answers)

    can someone check my answer thanks ! 2.The ability to do work or cause change is called A.velocity. B.energy.(I PICK B.) C.transfer. D.friction. 3.Which type of energy is demonstrated by a person jogging? A.electrical energy B.nuclear energy
  5. Physics -- check answers please

    1. A boy pushes a car to slow it down while the car is rolling horizontally down the road. If the boy pushes backwards on the car with 10N of force as the car rolls forward 3.0m, the amount of work done by the boy is: a)-30 b)0 c)3.3 J d)30 N•m e)300J my
  6. Calculus

    You are expecting a tax refund of $4,000 in 4 weeks. A tax preparer offers you an "interest-free" loan of $4,000 for a fee of $50 to be repaid by your refund check when it arrives in 4 weeks. Thinking of the fee as interest, what simple interest rate would
  7. Calculus prince@18

    let the function h(x)= (integrand symbol from 2 to x^2)arctan (t) dt. Find h'(x). This question confused me because i know the derivative of an integral is the original function. I just need help with finding the derivative of that integral. I don't know
  8. Career Explorations - Please Check my Answer

    Please help me with the following question: Which statement describes the relationship between being a waitress and being a restaurant manager? A. Being a waitress is a job, while managing a restaurant is a career. B. Being a waitress and managing a
  9. 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
  10. Calculus

    Determine over what interval(s) is the function y=4x-6arctan(x) is concave up/concave down I took the second derivative and ended up with x=0. I do not believe I did this right. IF I happen to be right, wouldn't our answer just be undefined, rather than
  11. Calculus

    Hello all, I would like some confirmation on a limits question. The limit is as h --> 0, [sqrt [73-5(x+h)] - sqrt (73-5x)]/h I multiplied by the conjugate of the numerator and reduced everything down to this final answer: [(-5)sqrt(73-5x)]/2 Is this
  12. Math

    I haven't done factoring in ages I'm trying to factor this X^2 - 2X + 8 If i remeber correctly sense the leading coefficent is 1 the factored form is in this format (X-A)(X-B) which would give you X^2 -AX - Bx + AB or simply X^2 -(A+B)X +AB so then in my
  13. Math check

    A random sample of size 26 is to be selected from a population that has a mean ì = 46 and a standard deviation ó of 15. (a) This sample of 26 has a mean value of x, which belongs to a sampling distribution. Find the shape of this sampling distribution.
  14. Math-- Desperate for help!

    Find the amount in an account if $2000 is invested at 6.125%,compounded semi-anually,for 2 years. A. $2,256.49 B. $2,252.50 C. $2,324.89 D. $544,757.84 One of these is the correct answer. I am coming up with (D) 544,757.84 Can you check, because I am
  15. Calculus

    Let f(x)=−2 x^3 − 3 x^2 − 2 x − 10. Find the interval where f is concave up. I Answer: < x < Find the interval where f is concave down. Answer: < x < Find the inflection point of f. Answer: x=
  16. Algebra II

    I am super confused with permutations and combinations. I just don't see when you are supposed to use each one, and when you aren't supposed to use either. Our homework was to correct our tests, and I did quite poorly. I tried to fix some of these, so
  17. Calculus

    If I derive the following, d/dt((a)S(t^2) of (s)^(1/2)ds with S being integral notation (a) being at the bottom of the notation and being a constant (t^2) being at the top of the notation ..I first apply the fundamental theorem of calculus to get..
  18. Ethics

    please check my answer thanks :) There has been judgement entered agaisnt Mike in the Northern District Court of New York. What statment below must be true for the judegment to be aganist Mike personally. A. He was a resident of New York B. Mike lives in
  19. Pre-Calculus

    f(x) = 7x^3 + 8x^2 - 3x + 8 Find f(7) using synthetic division, and list the numbers in the bottom row of the division. My answer: The numbers in the bottom row are 7, 58, 403, and 2829. The answer is 7x^2 + 58x + 403 + 2829/x - 7.
  20. accounting

    Can someone please check my answer to this question: In recent years, a company has greatly increased its current ratio. At the same time, the quick ratio has fallen. What has happened? Has the liquidity of the company improved? My answer: The decrease in
  21. French

    Can you please check these thanks Directions: Moi: Donnez des réponses personnelles. 1. Tu dois boire beaucoup d'eau? Answer: Oui, je dois boire beaucoup d'eau. 2. Tu bois de l'eau? Answer: Oui, je bois de l'eau. 3. Qu'est-ce que tu bois quand tu as soif?
  22. Introduction to Graphic Design

    Hello! Thanks for checking my question out! ____ 8. Which of the following is one of the ways in which graphic design has become safer through technology? (1 point) a) New technologies, such as computer equipment and smartphones, can be discarded easily in
  23. Economics

    Could you please check these. Directions: Match each statement with it's correct definition or item. Here are the words productivity subsidy supply schedule supply elastic surplus profit price floor government regulations equilibrium price supply 1. amount
  24. Math (Calculus) (Related Rates)

    A boat pulls away from a dock at 2 m/s, but the operator has neglected to remove the tow rope used to pull the boat up to the dock. This rope runs thru a pulley which is attached to the dock at a point 1 m higher than the point at which the rope is
  25. English

    1. He is riding a roller board. 2. He is in the air on the roller board with his arms spread in the picture. 3. Talk with your partner and check the Yes box if your partner likies the activity. If your partner doesn't like the activity, check the no box.
  26. Social Studies

    What was the purpose of the Freedmen's Bureau? A. to provide assistance to former slaves and poor whites B. to protect Georgia's landowners C. to create segregation laws for Georgia D. None of the above My best answer is A can you please check @Ms.Sue
  27. information literacy

    Use one of the sources available in the Almanacs and Yearbooks section to identify the approximate time of sunrise in Anchorage, Alaska, on December 25, 2015. (Hint: Check the source's Astronomy section.) A. 8:10 A.M. B. 9:45 A.M. C. 11:30 A.M. D. 10:15
  28. office practices/ medical

    please check my answer thanks True or False A company that provides comprehensive health care services on a prepayment basis to voluntarily enrolled participants is called HMO I said True
  29. Health

    please check my answer thank you What is the first thing you should do if your bare hands accidentally comes in contact with a pt's blood. A report it to your doctor B wash your hands with and water C apply gloves D obtain a hep B shot I picked B
  30. 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 gAlaiyoh, which in Yoruba means gOne for
  31. Health care

    Please check my anser thank you :) You work in a doctor's office and have just submitted several claims to a commerical insurance company. Your office will probably be reimbursed based on what? My answer is traditional fee-for service system.
  32. chemistry

    I got C_4 H_3 O_8 for this question but I'd like someone to check my answer, please. A 1.012 g sample of a compound containing C, H, and O was burned to produce 2.145 g CO2 and 0.3293 g H2O. Calculate the empirical formula of the compound
  33. Photography

    Could someone check my answer for me?? :) If a photograph is balanced, it has what?? A) All of the color in one corner B) Two focal points that are the same size C) Objects, Color and Texture distributed throughout the piece*** D) A healthy Diet I'm pretty
  34. Health/ Basic Clinical Procedures

    please check my answer True or False The medical assistant measured the circumference of the infant's head the method of the exam has occurred is called observation ? I said false
  35. check!

    Write a recursive formula that generates the terms of the following: . . .1, 3, 9, 27 my answer: t1=1, n>2 --> tn= 3tn-1 is this correct? Let's test You have the sequence 1, 3, 9, 27 ... You wrote t1=1, n>2 => tn= 3tn-1 What is t2? It's
  36. Teaching dogs Tricks

    Please check my answer thanks When working out how to teach a new behavior, it's important to A. consider the breed of dog. B. break the behavior down into small parts. C. use clicker training. D. watch where the owner is standing. I say B
  37. Health/Specialty Exams and Advance Techniques

    please check my answer thanks The level on decline in a 66- year old patient is most likley affected by A. gender B. race C. social factors D. age I picked D. (age)
  38. Law

    Please check my answer thanks :) A Dr is treating a pt for schizophrenia he tell the dr that he plans to kill Sally when he is relased from the hospital the believes that but he does not contact Sally. Sallty then sues the doctor the basis of her cliam is
  39. English

    Nine Haikus During a Drought In the dusty lane A frog waits for a puddle To fall from the sky Which form best describes this poem? A. limerick B. Haiku C. Concrete D. Narrative My choice is B. Haiku What about the poem best supports the answer to the
  40. Math ~ CHECK ANSWER

    Below are two sets of student quiz scores on a 30-point quiz. Which of the following can you conclude by comparing their box-and-whisker plots? Class A: 5, 10, 13, 18, 19, 25, 29 Class B: 1, 3, 5, 7, 9, 9, 13 a) The first quartile of class B is greater
  41. calculus

    how do i get the answer for this limit limit x to 0 (4^2x-1) without using direct substitution my work so far is limit x to 0= (4^2x-1) = (4^2x/4^-1) is it correct?
  42. calculus

    lim t-> -infinity for sqrt(4t^2-5t-1)/(2t-3) I get infinity or -infinity, but the real answer is -1. How does this occur?
  43. Algebra

    Word Problems (Addition/Elimination Method). Check if my answers are correct. 1.A girl bought 2 CDs and 3 DVDs for $92. Each DVD costs $4 more than the CDs. What is the price of each CD and DVD? My answer: CDs- $16 and DVDs-$20 2.A boy bought 20 stamps,
  44. Math

    Decoration:? Candy:45 Invitation:45 Music:40 Party hall rental:80 Food:65 Prizes:30 Costumes:40 Mary is planning a costume party. she spent $375.00 a show on the graph. How much of the money was spent, to the nearest Dollar, on the following items? 1.on
  45. English

    Can you please check if these sentences are OK? Thank you. 1)Forensic science adopts different scientific methods to catch criminals. 2)In particular, scientists can examine a suspect’s fingerprints or check blood type. 3) They can also check teeth and
  46. Reading

    In which sentence about A Christmas Carol is the word meager used correctly? a) The Ghost of Christmas Future used his meager finger to point to Scrooge's tombstone. b) Scrooge gave Adam a meager amount of money to reward him for buying an enormous turkey.
  47. 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)
  48. math(check answers please)

    PLEASE CHECK THESE ANSWERS compare the pair of numbers use <,>,= 3/4 _ 6/8 A.3/4=6/8(I PICKED THIS) B.3/4<6/8 C.3/4>6/8 Write the decimal as a fraction or mixed number in simplest form. 3.45 A.4 3/4 B.4 9/20 C.3 3/4 D.3 9/20(I PICKED THIS
  49. math

    The estimated completion time for a inspection consisting of 100 check points is 3 1/3 hours if u take away 3hours whats the estimated rate of completion per check point
  50. Social Studies

    what was the purpose of the constitutional convention held in philadelphia in 1787? A.To sign the treaty of paris B.To select the nation's new president. C. to revise the Articles of Confederation D.to draft a declaration of independence My answer is c
  51. 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
  52. History (Mrs. Sue, check answer?)

    Which of these Transcendentalist writings had the most direct influence on African American activists in the 1950s and 1960s? (5 points) "Ambition" "Orphic Sayings" "Woman in the Nineteenth Century" "Two Rivers" I believe it is D. but want to make sure :)
  53. U.S. History

    please check this 1. The Great Awakening is best described as a. the conversion of thousands of Native Americans to Chrisitanity b. the shift of many New Englanders to the Quaker faith c. a total rejection of Puritian ideas d. a series of religious
  54. SOCIAL STUDIES PLEASE HELP CHECK ANSWER

    Which example best shows the United States as a mediator? A. Debating human rights with China**** B. Supporting democracy in the Philippines C. Promoting a peace agreement in Bosnia D. Encouraging the end of apartheid in Africa
  55. Trig

    Can someone check my answers so far? 1. Find the exact value of tan(-3ð) Answer: tan(-3ð) = tan (-3 + 2ð) = tan (-ð) = tan (-ð + 2ð) = tan(ð) = sin (ð)/cos(ð) = (0)/(-1) = 0 Exact value is 0 2. Solve triangleABC is C = 90 degrees, B = 20 degrees,
  56. 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
  57. Language Art (Please Check)

    please check 6.which of the following is a run-on sentence? A.terri had a hard time continuing the tour she was so tired from the day's events.(I PICK A) B.som students decided to rest,so they returned to their hotel. C.washington is a great place to visit
  58. Calculus

    Water is draining at a rate of 2 cubic feet per minute from the bottom of a conically shaped storage tank of overall height 6 feet and radius 2 feet . How fast is the height of water in the tank changing when 8 cubic feet of water remain the the tank?
  59. math ( CHECK MY WORK)

    1. on 3 tests, a student scored a total of 258 points. if the student improved his performance on each test by 5 points, what was the score on each test a. 81,86,91 b. 80,85,90 c. 75,80,85 d. 70,75,80 is the correct answer A. 2. an item costs x dollars.
  60. Math/Check

    I have a few problems I need you to take a look at and tell me if I arrived at the right answer. 1. I am to use the intercepts to graph the equation x+3y=6 I used the formula y=mx+b using 3 and -6 for x I got these as my ordered pairs to graph (3, 1), (-6,
  61. Calculus

    Find the relative extrema, if any, of the function. Use the second derivative test, if applicable. (If an answer does not exist, enter DNE.) f(t) = 7 t + 3/t relative maximum (x, y) = relative minimum (x, y) =
  62. Calculus

    For the following demand equation compute the elasticity of demand and determine whether the demand is elastic, unitary, or inelastic at the indicated price. (Round your answer to three decimal places.) x + (1/9)p - 27 =0 ; p=23
  63. Calculus. Limits. Check my answers, please! :)

    4. lim (tanx)= x->pi/3 -(sqrt3) 1 (sqrt3) ***-1 The limit does not exist. 5. lim |x|= x->-2 -2 ***2 0 -1 The limit does not exist. 6. lim [[x]]= x->9/2 (Remember that [[x]] represents the greatest integer function of x.) 4 5 ***4.5 -4 The limit
  64. Math (quick check plz)

    hi i rearranged these terms into y=mx+b can you plz check and see if they're right? 1. 2x+5y-16=0 2. 4x-3y-6=0 3. 3x+y+2=0 1. 5y=-2x+16 2.3y=-4x+6 3. y= -3x-2 tnx ^^ On the first two, you need to divide each side by the coefficent of y. On two, what
  65. algebra

    x/9 +3 = 8 - x/3 Solve?????? First, get rid of the fractions to make the equation easier to solve for x. Let's multiply every term by 9: 9 [x/9 + 3 = 8 - x/3] x + 27 = 72 - 3x 4x = 45 x = 45/4 Substitute 45/4 for x in the original equation to check. It
  66. 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
  67. calculus

    Using an upper-case "C" for any arbitrary constants, find the general indefinite integral ∫ (-2-t)(-9-t^2) dt Now I multiplied both parentheses to get: ∫ (18 + 2t^2 + 9t + t^3) dt now I integrated and got: 18t + 2t^3/3 + 9t^2/2 + t^4/4 + C but
  68. Calculus

    Oil spilled from a ruptured tanker spreads in a circle whose area increases at a constant rate of 7.5 mi^2/hr. How rapidly is radius of the spill increasing when the area is 8 mi^2? I tried using A=(pi)r^2 and dA/dt=2(pi)r(dr/dt) and plugging in
  69. Calculus

    Use implicit differentiation to find dy/dx. e^4x = sin(x+2y). This is a practice problem. It says the correct answer is 4e^x/(2sin(x+2y)) but I keep getting 4e^(4x)/(2cos(x+2y)). I thought the derivative of e^(4x) would be 4e^(4x), not 4e^(x). And I use
  70. calculus

    A plane flying along a straight path loses altitude at the rate of 1000 ft for each 5200 ft covered horizontally. What is the angle of descent of the plane? (Round your answer to one decimal place.)
  71. calculus

    A variable force of 7x−2 pounds moves an object along a straight line when it is x feet from the origin. Calculate the work done in moving the object from x = 1 ft to x = 19 ft. (Round your answer to two decimal places.)
  72. Pre Calculus

    solving exponential equations with exponents on each side 5^x =4^(x+1) They don't have common bases and now I am lost I thought I could just come up with a common base (in this case 20) and change the equation to 20^4x =20^(5x+5) However I am not getting
  73. Math-Calculus (check please)

    FOr the function f(x)=x^2e^x Find the critical points, increasing decreasing, first and second derivative and concavity I am having trouble finding the concavity >_< First derivative: xe^x(x+2) Second : e^x(x^2+4x+2) Critical points from first
  74. Science

    If you start a project at 5:45pm and you check on the project every 30 minutes for 3 hours, what times will you check on the project
  75. pre calculus

    A projectile is fired straight upward from ground level with an initial velocity of 320 feet per second. (Assume t = 0 seconds corresponds to the time the object is fired. Use 32 feet/second2 as acceleration due to gravity.) (a) At what instant will it be
  76. Math 8R - HW Qs. Check

    Find a real number between (-2)2 and square root of 25 (-2)2 = 4 square root of 25 - 5 a) -3 b) 3.998 c) 4.225 My answer is a. Am I correct.
  77. anna

    There is a right triangle. the legs are x and y and the hypotenuse is 120. the angle opposite x is 58. please check my answer. x= 120 y=64 because: SIN58= x/120 COS58=y/120
  78. Math (check)

    what is the slant height for the given pyramid to the nearest whole unit? with a pyramid base of 12cm and a height of 8cm. MY ANSWER: 14
  79. Algebra 1--Step-by-Step

    Can someone show me how to solve these step-by-step? Please? Thank you. Factor each polynomial by grouping. Check your answer. 1. 2r^2 - 6r + 12 - 4r 2. 14q^2 - 21q + 6 - 4q 3. w^3 -4w^2 + w - 4 4. 2p^3 - 6p^2 + 15 - 5p
  80. Physics- Can you check my answer PLEASSE

    The velocity of an object increases from 5.0 m/s to 15 m/s in 2.0 s. What is the average acceleration of the object? 15m/s - 5m/s = 10m/s 10m/s / 2.0s = 5 m/s <----
  81. Chemistry

    How many moles of compound are present in 17g of Fe2O3? I think I know how to do this, so if someone can show me so I can check my work against it. My answer was .106 moles of Fe2O3.
  82. Algebra

    Ribbon is sold at 3 yards for $6.33. Jackie bought 24 yards of ribbon for a project. How much did she pay? I am pretty sure it is $50.64 PLEASE CHECK MY ANSWER
  83. Check Fib. Number problem please

    For any prime number p except 2 and 5, either Fp-1 or fp+1 is divisible by p. If I showed that this is true for p=7, the answer should be F8---is this correct because f8 is 21. P=11 would be divisible by 55 which is F10.
  84. English

    The sentence below requires a citation. The United States of America has 50 states. True False I say True. Please check my answer.
  85. Law

    If the result of a case is that the defendent has to go o jail for a year then it was likely a malpractice case true or false I said True please check my answer thanks :)
  86. 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 ?
  87. chemistry check answer

    Question: Explain whether using solid NaOH pellets rather than aqueous NaOH would alter the enthalpy. If different, would it be higher or lower My answer: Would the result be different since the aqueous NaOH would be able to quickly dissolve in water
  88. Algebra

    Hi, could someone possibly check my answers to these algebra questions? Its not my strong point so have been struggling a little (or alot if they are all wrong!) 3m-8-5m+10 = 2-2m 4(2-6x) = 8-24x 7(a+3)-5 = 7a + 16 2x-3(4y-x) = 2x-12y-9x 2(4y-1)+5y(3-2y) =
  89. Stats

    Of 43 bank customers depositing a check, 18 received some cash back. (a) Construct a 90 percent confidence interval for the proportion of all depositors who ask for cash back. (b) Check the normality assumption.
  90. Algebra

    I think this is a easy trick question, so I probably know the answer but I just wanted to double check. What is the domain and range of the function f(x) = 3^x Find the f^-1 and its domain and range? Thanks for your help.
  91. Law and Ethics in Med

    Please check my answer thanks :) Breach of confidentiality could have which of the following consequences ? 1. Ethical only 2. Legal only 3. Ethical or legal 4. Licensure revocation only I think # 3
  92. Algebra

    Can somebody please help me with solving this and show steps if they can. Solve the equation. Check for extraneous solutions. 9|9-8X|=2X+3 For my answer I got X=-1 I divided by 9 on both sides I got 8X=2X-6 Then I divided by 6 on both sides and got X=-1
  93. English

    In a research-based paper it is sometimes OK to quote directly from a research source without any attribution. True False I say False. Please check my answer.
  94. Grammar

    Each sentence in a paragraph should relate to the idea that the topic sentence introduces. 1. True 2. False I answered true. Please check my answer and Thank you for your help.
  95. econ

    My professor asked to take the derivative of profit for fun so I just wanted to check if my answer was right. profit=PQ(p,a)-c(q(a))-a dΠ/dQ = -2bQ + (a-c) ≡ 0. Thus, -2bQ = -(a-c) and Q = (a-c)/2b.
  96. Math(Check)

    if the exchange rate between venezuelan and american currencies is 2144.6 bolivars per u.s dollar, about how many u.s dollar can you get for 500 bolivars i think the answer is $4.28
  97. Law and Ethics in Med

    Please check my answer thanks :) Breach of confidentiality could have which of the following consequences ? 1. Ethical only 2. Legal only 3. Ethical or legal 4. Licensure revocation only I think # 3
  98. Meicare reimbursement

    please check my answer thanks True or False A provisionally accredited hospital gets medicare reimbursement so that it can stay open True
  99. math

    The nurseryman brought six different varieties of trees to plant in six locations in the park. In how many different ways can he plant the trees Please check my answer = 720
  100. Chem answer check

    Which of the following are strong electrolytes? BaCl2 AgNO3 PbI2 Pb(NO3)2 KI I think they are all strong electrolytes. Is this correct?