Calculus (Answer Check)

71,347 results, page 69
  1. Pre-Algebra

    The problem is 6 + -x/2 = 14 My answer is x = 16. The "correct" answer is -16 but I don't understand this solution.
  2. please help

    Choose the answer that identifies the nominative case pronouns. I, you, he, she, it, us, you, they I, you, he, she, it, we, you, they I, you, he, she, it, we, you, them I, you, he, she, its, we, you, they # 3 is the answer?
  3. Math c30

    Determine the period length of y=3tan 2x I had the answer to be pi , but the correct one is pi/2 How do you get that answer??
  4. math (calculus)

    what would be the answer when you plug 5pi/4 into this equation 6sec^2x-7sinx for x? i cant get the answer need some help
  5. Algreba

    What is the simplified form of the expression? (2x^6)(3x^1/2) A.6x^13/2 B.6x^3 C.5x^13/2 D.5x^3 I got the answer 3x^7 but that's not one of the answer choices and I'm really lost.
  6. Calculus

    Compute the curvature. r(t)=(t^2,2t^3/3) t >0 The answer is 1/2t(1+t^2)^3/2 I have tried multiple times but i cannot arrive to this answer.
  7. Vectors

    Could someone help me solve these system using elementary operations, I am having trouble with both of them. x+y+z =0 x-y =1 y-z =-5 (For the one above the answer is (-1,-2,3) 2x-y =0 2y-z =7 2z-x =0 (For the one above the answer is (2,4,1)
  8. Math

    Simplify the variable expression: 1. (13)(-x) My answer: -13x 2. (-4)(-x)^3(x)(-1/8) My answer: 1/2 • -3x I'm not sure about number 2. Thanks
  9. Language Check Ms.Sue

    Choose correct capitalization, punctuation, and spelling. 1. Thank you for you're prompt response to my request information about traveling to Australia. A. Thank you for youre B. Thank you for youre' C. Thank you for your D. Thank you for your' E. Correct
  10. L.A help please

    Please check. 4. Which of the following is one of the most significant events in chapter VIII *Johnny Tremain* A. Merchant Lyte's sickness B. James Otis's speech C. Lavinia asking the soldier to get Dr. Warren for her father*** I chose this one D. Dr.
  11. Physics B

    Part 1 Calculate the magnitude of the linear momentum for each of the following cases: A proton with mass 1.67×10 −27 kg moving with a speed of 5.24 × 10 6 m/s. Answer in units of kg · m/s Part 2 A 15.1 g bullet moving with a speed of 327 m/s. Answer
  12. English

    Which of the following lines from "Birches" uses metaphor to create a strong image? a. "Shattering and avalanching on the snow crust Such heaps of glass to sweep away..."*** b. "I should prefer to have some boy bend them As he went out and in to fetch the
  13. writing

    Answer the following questions in a 100- to 200-word response. Address each bullet point in your answer. o In the future, how will thinking critically influence the ways that you · Read? · Write? · Process information? · Answer the following questions
  14. check english answers please??

    Match the definition with the appropriate word. A. an appeal to logic B.the emotion that a speaker demonstrates towards his or her subject C.an appeal to the credibility of the speaker D.an appeal to the emotion E.devices in a speech that seek to convince
  15. Social Studies Homework (About USA And Canada)

    I need help with one question and I need one question answer checked! Social Studies Homework: 1)What are the two main languages of USA? Answer: English and Spanish 2)What are the two main languages of Canada? (Please give an direct answer for question 2
  16. Diversity

    Would someone please check my answers to make sure I've chose the best possible answer? 1. An example of ________ can be found in the gradual immersion of early Irish immigrants and their descendants across decades as they become a part of and contributed
  17. Algebra

    I already posted this question, I just wanted to clarify my answer. Problem: When Frederick was born, his grandparents gave hime a gift of $2000, which was invested at an interest rate of 5% per year, compounded yearly. How much money will Frederick have
  18. History

    Could someone please check my History questions? Any help will be greatly appreciated! My answers are under the question... 1) Which characteristic is most commonly associated with the westward expansion of the United States? A) Industrialism B)
  19. Algebra 2 Linear Programming

    I think this is an easy question but i just wanted make sure i have the right answer Could you check my work Some students make and sell jewelry in their spare time. Every week they have an avaiable 10,000 beads of various colors and sizes. They only have
  20. Math(answer check)

    1. Find the modulus and argument of the following complex numbers, and write them in trigonometric form: a. 5 – 8i Answer = Sqrt{89} ( cos (-1.01219701) + i sin ( -1.01219701)) b. –1 – i answer = Sqrt2 (cos (5pi/4) + i sin (5pi/4)) c. –5 + 12i
  21. STAT

    To determine the relative effectiveness of different study strategies for the SAT, suppose three groups of students are randomly selected: One group took the SAT without any prior studying; the second group took the SAT after studying on their own from a
  22. calc

    find the area of the region bounded by y=4x, y=x^3, x=0 and x=2 Check this on paper, but in my mind I see the differential area (x^3-3x)dx integrate that from 0 to 2 y=4x and y=x^3 intersect when x=-2,0 and 2 the vertical boundaries are x=0 and x=2, so the
  23. English

    e.g. Is the hotel closed? (What does the sentence above mean? #1 or #2?) 1. As it is too late, the hotel doesn't allow people to check in, right? 2. The hotle no longer open and the owner quit the hotel business, right?
  24. Essay

    I have written an essay that is a couple page. I used Grammarly to check for errors but it says there are a bunch of advanced errors. I want to fix those ones but don't know what they are or where to look. Is there a website I can use to find these errors?
  25. SraJMcGin spanish HELP

    RESPONDE a estas preguntas con una condicion. PLEASE REVIEW MY ANSWERS 1. Que vas a hacer este verano? Si My answer= voy a viaja. 2. Que vas a regalarle a tu mejor amigo por su compleanos? Si My answer voy regalare una canta 3. No estas muy contendo con tu
  26. Physics

    A stone is dropped from the top of a cliff and hits the round below with a speed of 50m/s. Assume that the acceleration due to gravity is 10m/s/s. Find it's mean speed, in m/s, during the fall. Do not include units when typing your answer into the box.
  27. General

    Please understand that I am not upset with anyone or whatever I just want to know something. I have some work to be checked and the regular tutors here say that "we will be happy to critque your thinking" right? Ok so when someone comes to this site and
  28. Grammar

    I would like for someone to check this and make sure that I have this right. I had to rewrite the sentence that was not righ. Dangling Modifiers: If your baby dow not like cold apple juice, it should be heated. Your answer: If your baby does not like cold
  29. physics

    A particle rotates counterclockwise in a circle of radius 6.5 m with a constant angular speed of 7.4 rad/s. At t = 0, the particle has an x coordinate of 3.3 m and y > 0 . A) Determine the x coordinate of the particle at t = 0.716 s. Answer in units of m (
  30. physics! please help!!

    A particle rotates counterclockwise in a circle of radius 6.5 m with a constant angular speed of 7.4 rad/s. At t = 0, the particle has an x coordinate of 3.3 m and y > 0 . A) Determine the x coordinate of the particle at t = 0.716 s. Answer in units of m (
  31. Algebra HELP!!

    Write the equation of the line that contains the points (2, 2) and (-3, 12). Here is part of the answer. Can you identify the missing part? y = -2x + ___ I think it's 12 You've got the slope so use y-y1=m(x-x1) where (x1,y1) is either point. If you use
  32. Science/Biomaterials

    Given the following properties, how much stretch would you expect to occur in a specimen of polyethylene to which a tensile load is applied? l = change in length Length = 10 cm Cross-Sectional Area = 1 cm2 Young's Modulus = 200 GPa Applied Load = 1000 kN
  33. Preschool Question--Pleae Help!

    I asked this question a few days ago- and several tutors said there is no one correct answer. There has to be one answer better,because I can only mark one answer. For many children,the development of their imagination affects the development of: A.
  34. would someone please check this math

    1 four buttons have diameters of 5/8 , 3/4, 9/16, and 7/8 which buttons is smallest? answer 9/16 2. I spent 1/3 of my time doing math homework and 2/7 preparing for a history test . what fraction of study time remain? answer: 13/21 3. least common multiple
  35. Maths

    Hi everyone. I've been struggling with the following maths question for a while and I'm not sure where I went wrong. 2(3x/5 - 1) = 10 and I need to solve for x I first tried turning everything into fractions over 5 but that gave me the answer of 10/3 which
  36. ALGEBRA

    In a math contest each team is asked 50 questions. The team earns 15 points for each correct answer and loses 8 for each incorrect answer. One team finished with 566 points. How many questions id the team answer correctly?
  37. Social Studies

    1. Which river helped Rome grow and expand? A. Tigris
  38. physics

    when i calculate the density from my measurement,mass=154.4, volume=175.00,and got 0.8823 g/cmexp3 as the answer,so do i have to express the answer in scientific notation or round off it? No, you do not need to express the answer in scientific notation
  39. Biology

    a. Identify each statement as an observation, hypothesis, or prediction. b. Are the groups of statements below examples of an inductive or deductive process. 1. Male red -winged blackbirds display red wing patches to signal superior to other males. Answer:
  40. english

    Posted by Anonymous on Friday, August 24, 2007 at 10:00pm. download mp3 free instrumental remix For the book, The Five People You Meet in Heaven, I have to answer this question: Q- 1. SETTING: give the time, place, and lenghth of the story. A- time: from
  41. math/chem significant figures

    Which of the answers for the following conversions contains the correct number of significant figures? A)2.543 m x 39.4in/1m=100.1924in B)2 L x 1.06qt/1L=2.12 qt C)24.95 min x 1hr/60 min=0.4158 hr D)12.0 ft x 12in/1ft x 2.54cm/1in=370cm E)24.0 kg x
  42. Physics

    A Cessna 150 aircraft has a lift-off speed of approximately 125 km/h. What minimum constant acceleration does this require if the aircraft is to be airborne after a take-off run of 172 m? Answer in units of m/s2 What is the corresponding take-off time?
  43. Math

    Simplify the expression. (-4)^-6(-4)^-7 My answer: -4 Simplify and give the answer in scientific notation. (5 X 10^6((3 X 10^5) My answer: 1.5 X 10^12 (3 X 10^6)(8 X 10^-4) My answer: 2.4 X 10^3 Astronomers measure large distances in light-years. One
  44. math correction

    can someone correct this problem for me thanks A group of 7 workers decide to send a delegation fo 2 to their superviosr to discuss their grievances. a) how many delegations are possible? my answer: 21 b)If it is decided that a particular worker must be in
  45. English

    Thank you very much. Could you please check if the answer to question is grammatical? 1) At the beginning of the voyage the ship is caught in a storm then by mist and snow and finally is surrounded by ice. The storm is represented as a huge bird, chasing
  46. Science

    Please Check! 1. How does nanotechnology help engineers make products for the future? a. By changing a materials atomic structure, it can be made from elements that are easier to obtain.*** b. By changing a material's atomic structure, its physical
  47. Science Please Check

    Please Check 1. How does nanotechnology help engineers make products for the future? a. By changing a materials atomic structure, it can be made from elements that are easier to obtain.*** b. By changing a material's atomic structure, its physical
  48. Foreign Language

    The directions say to translate the sentence in Spanish and then rewrite it using Indirect or Direct Object Pronouns. Are my answers correct? 1.) She bought the house for us. My answer: Ella compró la casa para nosotros. 2.) She needs to walk the dog for
  49. Economics: Price Elasticity

    Please check my answers whether they are correct or not. If not, please help me why they are wrong. Thank you. Question 1: Point: A (300, 1000) Point B: (200, 1200) According to the midpoint method, the price elasticity of demand for hot dogs between point
  50. Algebra 1

    10)The formula b=30a is used in New England to estimate the minimum furnace output, b, in BTU's for a modern house with a square feet of flooring. A) determine the minimum furnace output for a 2100 ft squared modern house. B) solve formula for a Answer:a)
  51. History

    Annexation was generally favored by which group in the U.S.? Abolitionists Catholics Northerners Southerners I think the answer is either C or D, Could someone please explain the better answer choice to me?
  52. Calculus

    Simplify. State the nonpermissible values. (3t^2+3t-6/2t^2-2t-4)(4t^2+4t-24/3t^2+6t-9) This is the way I tried solving this: 3t(t-1)6(t-1)/2t(t-1)4(t-1)*4t(t-2)12(t-2)/3t(t+1)9(t-1)
  53. Pre-Calculus-check answers

    Name all the values of x that are not in the domain of f(x)=2-x^2/x+5. Answer: x= -5 2)Find the minimum value of f(x,y)=2x-y+2 for the polygonal convex set determined by this system of inequalities: x >/= 1, x
  54. algebra

    I'm having trouble getting the symbols to post correctly on this page so let me try this again..... 3(7+2x) ¡Ü 30+7 (x-1) The answer to this inequality problem is x x ¡Ý-2 -2 I can't figure out how they got this answer. Can you show me the steps?
  55. Math

    4 letters are typed, without repetition. What is the probability that all 4 will be vowels? Write your answer as a percent. Round your answer to three decimal places.
  56. Math

    3 letters are typed, without repetition. What is the probability that all 3 will be vowels? Write your answer as a percent. Round your answer to three decimal places.
  57. reading

    i don't understand this question nad i need an answer : make a list of words that would entice you to purchase a product. need answer:) thanx
  58. Chemistry

    Determine the specific heat of a material if a 34.7 g sample absorbed 45.2 J as it was heated from 293 K to 318 K. Answer in units of J/g · K Your answer must be within ± 2.0%
  59. physics

    My answer for this question A 11.0 kg box is released on a 37 degreesincline and accelerates down the incline at 0.25 m/s^2. What is the coefficient of kinetic friction? My answer was 68.2 and it was incorrect.
  60. english 3

    One of the key questions historical criticism attempts to answer is: Who made the most important scientific discoveries of the time? Answer
  61. Calculus

    assuming that you wish to have $19000 in 7 years and that the account earns 6% compounded continuously. Round your answer to the nearest cent. Answer:
  62. algebra

    the equation is : - (2x + 3)-(4 + x). Using the distributive property, my friend got the answer -7 - 3x. I have been fiddling with this problem for 3 hours and don't understand how he got this answer. Can someone please thoroughly explain this to me?
  63. Math

    A multiple-choice test has four possible answers for each question. If a student guesses at the answer, what is the probability that he or she selects the correct answer
  64. algebra

    ^96divided by 8 We'll be glad to critique your answer. What is the meaning of the ^ before the 96? Your question does not seem to be about algebra. Okay jessica, what is 96 divided by 8?...and the rest of the class will not help her...do you have the
  65. Algebra 2

    Exponential Notation Simplify. (-2)^0-(-2)^3-(-2)^-1+(-2)^4-(-2)^-2 I tried solving this problem a few times and kept getting random answers. The answer in the book says that it is 25 1/4 I do not understand how you get that answer. Thanks For Your Help
  66. Physics HELP!!!!!!!!

    Could you use a straw to sip a drink on the moon? yes no not enough information to decide Justify your answer. Don't worry about this I figured it out already. Thanks! Answer is no.
  67. math

    my friend asked me how to do this probelm and i could not figure it out for the live of me. its simple im pretty sure. (6-5i)/(6+5i) I tried using the conjugate method and my answer did not come out correct. can you please answer this?
  68. Probability

    A multiple choice test has 10 items and each problem has four choices A, B, C, and D. How many ways can the answer sheet be completed so that every answer is wrong?
  69. Chemistry 1

    What answer should be reported, with the correct number of significant figures, for the following calculation: (965.43 x 3.91) + 9413.4136 I got 13189 as an answer. Can someone let me know if this is right?
  70. Science

    Should there be more or less exploration and mining on public lands in the United States? Explain your answer. What is your answer? Please post it, and we'll be glad to comment on it.
  71. To Laura/Joseph

    I have taken care of the answer to the SO3 ==> SO2 + O2 equilibrium problem that we worked on last night about midnight. You should obtain the correct answer now.
  72. Physics

    A bike goes around a circular track of diameter 21500 cm in 10 min. Find its speed? please answer fast i want this answer tomorrow.
  73. History- Cold War

    Could someone describe how the conflict between the superpowers manifested itself in two of the following regions: Europe, Asia, and Latin America? I am not really sure what it's asking and I don't know how to answer or what to answer. Please help me!
  74. Math

    Find the function rule. x: -2|-1|0 |1 | 2 y: 9|4 |-1|-6|-11 I don't have an answer yet. There's no options, I have to provide an answer. I've been studying this for at least half an hour and I have no idea what it could be. Any help? Thanks.
  75. math

    Shelly and her friend wanted to simplify a question 3/9 and 16/22 they didn't know how, but all they had to do is divide 3/9 and 16/22 with the clocest factor they can. The answer for 3/9 is 1/3 and the answer for 16/22 is 8/11 easy.
  76. algebra

    y=3(x+5)(x-2) I'm suppose to simplify right? There is no way to solve for the variables. y=3(x+5)(x-2) use the distributive property y=3x+15(x-2) y=3x+15x-30 y=18x-30 thanks for your help but the book says the answer is y =3xsquared + 9x-30 how did they
  77. Pre-calc

    The question is solve for cosx= 0.60 on the interval [0,2pi). The answer is to be posted in radians. I don't understand how to find the answer.
  78. Geometry

    Find the area of a trapezoid ABCD with verticles A(2,2) B(4,6) C(4,-3) and D(2,-1). Should I use a graph and go from there? I'm just not sure of how to set this up. The book answer is 12units. I am not coming up with the answer
  79. chemistry

    If I used 0.100L of 0.83 M HC2H3O2 (aq) (0.83 mol per 1 L of solution), how much carbon dioxide would be produced? (IT IS ASSUMED YOUR ANSWER IS IN L CO2 so you do not need to include that in your answer.)
  80. chemistry

    How many grams of MgO are produced when 40.0grams of 02 react with Mg? 2mg+O2--->2mgO Could you please set the problem up? I think the answer is 101, but I do not know how to get that answer. Thank you
  81. algebra

    can anyone show me the steps to convert to scinctific notation of these two problems: .000316 which the answer is 3.16x10^-4 and 0.000517 which the answer is 5.17x10^-4
  82. Math-Corrections

    Based on the survey,the librarian predicts that about two-thirds of the students in seventh grade will not like the new encyclopedia.Is this answer reasonable? Answer i got:yes
  83. Calculus

    For some reason the answer to this question is alluding me, Im sure its probbly something simple im just over looking. For what (numerical) value of the constant "c" is the function continous on (-?,?)?( Justify Answer) f(x)= x^2-cx if x>-1 cx^2+x if x?-1
  84. Chemistry 1

    What answer should be reported, with the correct number of significant figures, for the following calculation: (965.43 x 3.91) + 9413.4136 I got 13189 as an answer. Can someone let me know if this is right?
  85. maths

    What is the gradient of a line that has an angle of inclination of 75°? Enter the answer, rounded to 4 significant figures in the box below. the answer should be a number. ???
  86. Algebra II

    Solve 4^(x+2)= 160 How would I round this answer to the nearest hundredth? My answer was 200, I don't believe I worked the problem out correctly.
  87. Algebra2

    Find the values of the inverse function in radians. tan^-1(0.09) answer choices: a.-0.09+2pi n b. no such angle exists c.-1.48+ pi n d. -0.09+ pi n My answer is D
  88. math (algebra 2)

    ok, I think this is called factoring binomials... how do you factor 2x^2+3x+1 the example on the page just says: 2x^2+7x+6 the answer given is (2x+3)(x+2) How do you get that answer?? If there are any websites with additional help that would be great if
  89. arithmetic

    On one of the questions of a recent math test, a student divided by 9 instead of multiplying by nine. This computation gave an answer of 18. What's the correct answer?
  90. Social Studies

    Has the effort of Westerners to aid the rest of the world done more good than harm? Its a opinon but i would like a answer please. Please make your answer at least 6 sentences. Thank you very much
  91. Integrated math 1

    Consider the sample space S = {1, 2, 3, . . ., 10}. Let A = all odd numbers in S. Let B = all multiples of 3 in S. Compute P(B | A). Enter your answer as a fraction using the "/" and do not include spaces in your answer.
  92. Integrated Math 1 (help please??:( )

    Consider the sample space S = {1, 2, 3, . . ., 10}. Let A = all odd numbers in S. Let B = all multiples of 3 in S. Compute P(B | A). Enter your answer as a fraction using the "/" and do not include spaces in your answer.
  93. Calculus

    differentiate the given function, simplify your answer by leaving no negative or rational exponents. final answer should be in factored form where possible. y=(x^2 +2x)^3(x+2)
  94. Pre-calculus

    Name all the values of x that are not in the domain of f(x)=2-x^2/x+5. Answer: x= -5 2)Find the minimum value of f(x,y)=2x-y+2 for the polygonal convex set determined by this system of inequalities: x >/= 1, x
  95. algebra

    I asked this question earlier and wasn't sure what the answer was. Find all numbers for which the rational expression is undefined? 3/9w+7 Can someone help me figure this out? Is the answer 0?
  96. Spanish-7th grade-Please help

    I'm not sure what this is asking or how to answer it- ¿Qué prefiere llevar tu mamá? Is it asking what I prefer to take my mom? And how do I answer it? I'm really confused on the transalation Please give advice
  97. Algebra/math

    simplify the expression. Assume that all variables represent positive numbers. (36^-2y^4)-1/2(xy^1/2) I can't get the answer to this I just don't know how to answer this problem. Can anyone help? Thank You! Ashley
  98. algebra

    Find the distance d (P1, P2) between the points P1 and P2 P1 = (−4, 4) ; P2 = (1, 6) d(p1,P2)= ____ (Simplify your answer. Type an exact answer, using radicals as needed.) qaz
  99. science

    can i get the full answer to : determine your distance traveled and displacement if you walk 100 m forward and then 35 m back ? answer son as possible please and thank you !!
  100. spanish

    choose the correct answer Uno de los artesanos me (dio, di) una pequana figura de barro answer di