Calculus (Answer Check)

89,119 results, page 13
  1. Calculus

    lim (sin 4x/3x) x->0 Is the answer 4/3 or -3/4?
  2. calculus

    I'm trying to find the antiderivative of (x+3)/2 How would you go about this? The answer is (x+3)^2/4
  3. calculus

    What would the remainder be if: P (x) = x^3 - 3x^2 + 3x + 2 is divided by x + 1? How would i get the answer?
  4. english

    please check my answer thanks. Which of the following sences demonstrates correct subject- verb agreement. 1. Elens thinks that five dollars are a lot of money. 2. A number of my friends have bought new cars recently. 3. Each of his sisters go to a
  5. Algebra 2 Answer Check

    Solve. 2x + 4(x + 1) = 6(x + 2/3) A: No solution.
  6. Bobpursley plz help

    Can you please check my answers 3. Tx=2x+1,XW=x+7;TW Tx+XW=TW 2x+1+x+7+TW 3x+1+7=TW Answer: 3x+8+TW 4. WX=X+5,TW=4x+5;TX WX+TW=TX x+5+4x+5=TX 5x+5+5=TX 5x+10=TX
  7. arithmetic

    Hi can anyone help with fraction?? I want to check my answer: 1 1/2 x 1/4= 3/8 Thank you Ash
  8. alg 2 check?

    (4x+y)^2 answer:16x^2+y^2 is this correct?
  9. Algebra

    Solve the equation and check your answer (q+9)/5 + (q-2)/2 = 11/5
  10. science

    Can someone please check my other answer from Saturday June 5 @ 10:29 please thank you ?!
  11. math

    can someone check my answer Graph by first solving for y. x + 2y = 8 x-x+2y=8-x 2y=8-x 2y/2=8/2-x y=4-x y=4-x/2 y=4-1/2x
  12. Math Check

    Multiply 1)8t^2(t-t^2+7t^3) My Answer: 8t^3+-8t^4+56t
  13. Algebra: Answer Check

    1. (4i) + (2 + 8i) = 2 + 12i 2. 6i + 4i = 10i
  14. Civics - Check answer

    Hi, I have questions that I just need checked. There are 28. Can anyone help me?
  15. Algebra 1 Answer Check

    Factor this trinomial. 9x^2 - x + 2 A: (3x + 2)(x - 1)
  16. math

    find the quotient then check your answer 3/14.1
  17. Algebra (Answer Check)

    Did I do this right? Solve the following inequality. -5 > -5 - 3w (-5 + 5) > (-5 + 5) - 3w 0 > 0 - 3w (0 / 3w) > 0 (-3w / -3) 0 < w w > 0
  18. Math check

    What is 6 5/6 - 5 1/2 This is my answer:1 2/6 or simple form: 1 1/6
  19. TO: Mrs Sue...is my answer below right?

    can u check it plz
  20. Math Can anyone check my answer please

    4z-24/6-z=-z,-4 <<<this is in simplifield form am I right???
  21. Algebra

    x-8/x-9-x+1/x+9+x-17/x^2-81 =x^3-81x^2-7x-27/x^2. Can some check this my answer and see if it corre4ct please.
  22. Math Can anyone check my answer please

    4z-24/6-z=-z,-4 <<<this is in simplifield form am I right???
  23. To Mary

    Check below for the answer to your buffer question.
  24. algebra

    Solve the following, then check your answer by graphing. x^2+4y^2=25 y^2-x=1
  25. college algebra

    can someone check my answer for me please! 5x+6y=18 solve for y 6y=18-5 y=3-5/6x
  26. Math Check

    Solve: x^-2 - x^-1= 5/4 I have the answer as (5+/- sqrt29)/2 Is this right?
  27. Math check

    Solve: 3x^2-11=0 Is the answer" +- sqrt 11/3?
  28. Mathematics

    what is the slope of the line that goes through (6 ,5) and (3 ,1)? 3/4 -3/4•• 4/3 -4/3 Check my answer
  29. Math (check answer)

    find [7] A.1/7 B.-7 C.7 D.0 i pick 7.
  30. Algebra 1 Answer Check

    Factor each trinomial. 1. -2x^2 + 5x + 12 A: -1(2x + 3)(x - 4) 2. 4a^2 + 8a - 5 A: (2a -1)(2a + 5) 3. -4x^2 - 8x + 5 A: -1(2x - 1)(2x + 5) 4. -5x^2 + 7x + 6 A: -1(5x + 3)(x - 2)
  31. Pys. Science(check answer)

    .263degrees C
  32. algebra

    is this right? Divide and check: 12x^3y^2/2x^5y^2 answer: 6x^-2
  33. Algebra

    Factor. v^2+12v+36 my answer was (v+6)^2 Can you check this for me.
  34. Mathematics

    Which equation has (2,-1) as a solution. Y=2x - 1•• Y=x + 3 Y=x - 3 Y=-2x+1 Check my answer
  35. Mathematics

    Find the slope of (2,3) and (-2,1) -2 2 -1/2•• 1/2 Check my answer
  36. algebra

    Please Help Me Check My Work :) 1) Find the 5th term of - f(n)= 3(n-3) My answer- -279 2) Find the third term if the first term is 4 - f(n)= 2f(n-1)+2 My answer- 16 3) Find the third term using the explicit rule - f(n) 4-n/n+3 My answer- 1/6 4) Recursive
  37. math answer check

    x is a binomial random variable. (Give your answers correct to three decimal places.) (a) Calculate the probability of x for: n = 1, x = 0, p = 0.15 P(x) = Changed: Your submitted answer was incorrect. 0.15 x 0 = 0 . (b) Calculate the probability of x for:
  38. ICD-9-CM codes health care

    please check my answer thanks for the help :) Verifying the accuracy of ICD-9-CM and HCPCS codes are an important function in what ? My answer is maintence of the OASIS data set
  39. french

    could you check these? fill in the blanks with ai, as, a, avons, avec, and ont La famille Ghez ---- un bel appartement a Nice. Answer: a Leur appartement ----- six pieces. Answer: ont
  40. geography

    What lines of latitude determine the" tropics"? My answer is 23.5 degrees N and 23.5 degrees S latitude. Am I right? Please check me on one more! Why is Greenwich, England, so important to a geographer? My answer is -- Because the prime meridian runs
  41. Dogs Hunting Training

    Please check my answer thank you :) Is the following statement True or False Field trials are competitive events in which dogs can earn championship titles My answer is True
  42. precalculus

    Can you check my answer? Which of the following shows the best next step to prove the following by mathematical induction? 1+4+7+10 + + (3n-2)=n/2(3n-1) 1.When n=1, the formula is valid because (3*1-2)=1/2(3*1-1) (3-2)=1/2(3-1) 1=1/2(2) 1=1 A. You must
  43. Physics -- check answer please

    Light travelling in water is incident on air refracts at an angle of 27 degrees. What is the angle of incidence? my answer: 37 degrees
  44. Physics- check answer please

    1. A 15 kg boy falls out of his bed at a height of 0.50 m. What is the amount of gravitational potential energy lost by the boy? my answer: 74 J 2. What is the speed of a 0.25 kg ball if its kinetic energy is 15 J? my answer: 11 m/s 3. if the speed of an
  45. calculus

    Maximize p = 2x + 2y subject to 4x + 8y 24 8x + 4y 32 x 0 , y 0 (Round all answers to the nearest 0.1.) p = Incorrect: Your answer is incorrect. x = Incorrect: Your answer is incorrect. y = Incorrect: Your answer is incorrect.
  46. calculus

    is the function f(x)=x^2 increasing on decreasing at x = -1. can anyone please check my reasoning: the value of the derivative of the function at x=-1 is -2, so that means the slope of the tangent line to the graph at that is a negative value so the
  47. Science

    Can someone check my answer? The deepest parts of the ocean floor are called ____. ridges sea mounts trenches abyssal plains My answer is abyssal plains. Am I correct?
  48. science...help

    please check my answer ....plz... the question is: how is the size of the minerals grains affected by the rate at which molten rock materials cools? and i think the answer is : the bigger the grains the faster it cools.
  49. math/algebra

    can someone check my answer: 3ã486 my answer is 27ã6 if not show me where I went wrong please you are right. (did you see my post to you earlier on how to create square root sign? Does it not work for you?) 3√486 = 3√81*√6
  50. Science 7R - HW Qs. Check (PLZ read!)

    What is the difference between aerobic and anaerobic organisms? My Answer: Aerobic requires oxygen, anaerobic doesn't. Is my answer to this question is correct. Please reply this post! Thank You!
  51. Chemistry

    can someone check my answers thank you. 1)How many grams of hydrochloric acid are required to react completely with 4.30 grams of zinc? answer: 0.1328 g H2 2)How many molecules of gas will be produced? answer: 0.395x10^23 molecules
  52. 8th grade math

    Can you please check my answer? A spherical balloon has a volume of 268 cubic cm. If more air is pumped in so that its radius is 3 times as long, what is its new volume? My answer: 2,412 cubic cm
  53. Chemistry

    Can you please someone check my answer for me? a)Determine the number of grams in 0.750 moles of the compound Iron(II)phosphate: Fe3(PO4)2. Answer: b)How many atoms of iron are in 0.750 moles of the compound Iron(III)oxide? Answer:
  54. math

    Can someone check my answers & tell me what I did wrong if I did any? 1.) John paid $32 for 2 concert tickets & 1 program AND Romona paid $36 for 2 concert tickets and 2 programs. If all concert tickets were priced the same, how much did ONE concert ticket
  55. Math- Please check my answer

    Mali-li has 6 1/3 yd of material. Her new skirt will take 2 1/3 yd. How much material will she have left after the skirt is made? My answer:4 Am I wrong? If I am, can you explain it to me please? Thank you in advance.
  56. Spanish-Anoher question-Please check my answer for

    ¿Qué quieres comer hoy? Would I answer this-Quiero comer en el restaurante hoy. Thank you
  57. Chem I just need someone to check my answer

    arrange the following compounds in the order of increasing polarity HF, H2SE, N2, H2s I believe that the answer is H2Se < H2S < N2 < HF Is that correct?
  58. Chemistry

    For my homework the question is... What is the half life of polonium 214 if a 1 gram sample decays to 31.25mg after 820 seconds? Im not sure how you arrive at the answer, my friend says the answer is 5 but were not sure how to do it..thanks for any help u
  59. Nutrition of the young child

    Jamie loves all vegetables, all fresh and dried fruits, and milk. However,he refuses to eat dairy products and meats. Which of the following nutrients is he probably lacking? A.Iron B.Calcium C.Vitamin A D. Vitamin C I pick A as my answer Can someone check
  60. Earth Science - Please Check My Answer

    Please help with the following: Dani wants to measure the volume of a pebble. Which tool will give the most accurate measurement? A. a ruler B. a tablespoon C. a measuring cup D. a graduated cylinder I think the answer is mostly D. Is this correct? Please
  61. History: Please check answer

    3. The CIA participated in the Cold War by helping design efficient weapons systems. carrying out secret operations in other countries. spying on the Soviet Union. helping the president determine foreign policy. I think the answer is B. Thank You
  62. social studies

    please check my answer: why did african americans go from the rural south to northern cities starting in the late 1800s? - so they could be around other races and cultures - to change identities - to escape the discrimination and to find better jobs ** -
  63. math help please check my answer

    A national garden club president thinks 70% of its members plant tulips for the spring. Phone calls were made to 100 members. Of the 91 members who responded, 76 said they plant tulips for the spring. What is the sample proportion? Round your answer to the
  64. Logarithms

    1. Find the amount of time required for an investment to double at a rate of 12.3% if the interest is compounded continuously. MY ANSWER: 5.635 yrs 2. Solve e^(0.2x) < 21.2 by using natural logarithms. MY ANSWER: X<15.270 3. Convert log(base 5) 47 to
  65. math help. (check answer)

    All the surfaces of the lantern will be made of paper. What is the least amount of paper needed to make the lantern? A. 140 Cm^2 B. 144 Cm^2<---(my answer) C. 180 Cm^2 D. 432 Cm^2 Height = 12 Cm Length = 6 Cm Width = 6 Cm
  66. CHEMISTRY: DUE TONIGHT. CHECK MY ANSWER?

    1. For the simple decomposition reaction below, rate = k[AB]2 and k = 0.40 L/mols. AB(g) A(g) + B(g) If the initial concentration of AB is 1.60 M, what is [AB] after 13.0 s? ANSWER: (.4)(13)=5.2 1/1.6=.625 5.2-.625=4.575 1/4.575= .2185 I tried .22 & .21.
  67. Trig--check answer

    Solve the equation of the interval (0, 2pi) cosx=sinx I squared both sides to get :cos²x=sin²x Then using tri indentites I came up with cos²x=1-cos²x Ended up with 2cos²x=1 Would the answer be cos²x=1/2???
  68. math

    If I am making a map that has a distance of 200 mm, and the actual distance is 700m. How do I find the calculations to know how much each mm is? You can set up a proportion with x being the number of meters represented by each mm. 200 mm / 700 m = 1 mm / x
  69. Chemistry(Please Check)

    You dissolve 6.55 g of potassium nitrate in enough water to make a 250. ML solution. 1.What is the molarity of this solution?answer:0.0262 2.If you took out 15.0 mL of this solution, how many moles of potassium nitrate would you have?answer:0.393 3. What
  70. EnglishCheck

    CHECK PLEASE 1. (Points: 2) The bank will not (lend, loan) money for home repairs. b. loan Save Answer 2. (Points: 2) My allergies sometimes cause me to (loose, lose) my voice. b. lose Save Answer 3. (Points: 2) Please leave the report on the desk, and
  71. Pre-Calculus

    Rewrite each quadratic equation in the form ax^2+bx+c=0. Then,use technology to solve each by graphing. ROund you answers to the nearest hundredth, where necessary. a) 3x^2+30 = -19x Answer: 3x^2+19x+30 Roots: x = -3 b) 6x^2= 25x-24 Answer: -6x^2+25x-24=0
  72. Math

    I just wanted to double check that I am correct. Answer is in Interval Notation. 1. Solve: |x|<7 Work: -7>x<7 Answer: (-7,7) 2. Solve: |x|>_ 7 Work: -7<_ x >_ 7 Answer: ( - infinity sign, -7] U [7, infinity sign)
  73. Pre-Calculus

    Please check: 1.Find polar equation of x^2 + y^2 = 10y r^2 for x^2 + y^2 and sin(theta sin for y =r^2=10sin(theta) 2. y=5 r=5/sin 3. x^2+y^2 =x^2 + y^2 =2x+3y
  74. math check

    Would some please check these and see if I am doing them right thank you 1. Gasoline is about $2 per gallon. You use about 1 1/2 gallons each day driving to and from work. How much should you budget for gasoline over the next month (about 20 workdays)?
  75. English 10 Check

    Someone please check! * is the answer I chose. For each of the following pairs of topics select the one that is more focused. 1.)Topic. a.)Why beaches are fun *b.)Why I love Miami Beach 2.)Topic. a.)The wonderful world of vegetables *b.)The health benefits
  76. English

    1. You need to check the time. (What kinds of time should be checked acording to the sentence? Does ' check the time' have a lot of meaning according to the context? Does it also mean "Check what time it is now.?"
  77. Safety of the young child

    Which of the following statements encourages appropriate use of playground equipment? A. "I told you not to go down the slide head first'. b."You can't ride your bike in the grass because you're ruining it." c."Jumping off the monkey bars is against the
  78. Pre-calculus

    1)Which of the following results in the graph of f(x) = x2 being expanded vertically by a factor of 4? the answer is f(x) = 4x2. can you explain how. 2)Which is true for the graph of y=(x^2-9)/(x^2-4). the answer is vertical asymptotes at x = ±2 . please
  79. calculus

    Given f(x)=2x^3-7 find f^-1(x) and then find f^-1(-2) I though that this meant inverse function. x=2y^3-7 x+7=2y^3 (x+7)/2=y^3 ((x+7)/2)^(1/3)=y so this meant f^-1(-2) = 1.35721 The professor posted the answer as being 6. I'm not sure if I misunderstood
  80. Chemistry/Calculus

    I have a question about how to plug in numbers on my calculator (TI-30XIIS) to get an answer. How would I put in my calculator... ln 1.00X 10-2 mol/L /1.65 X 10-2 mol/L to get-0.501? I keep getting the wrong answer...
  81. Calculus

    1.Evaluate: (1/(x*sqrt(x^2-4)) I know the answer is -1/2*arctan(2/sqrt(x^2-4)), but I am having trouble getting to this answer on my own. I know the formula to solve it is 1/a*arctan(x/a) and that a=2, but that's all I know. 2.Find the limit of x^((ln
  82. Math Check

    Solve the inequality. So i have done this problem at least three times and I keep getting the same answer. But in the back of the book the correct answer for this problem is x<or equal to 5 This is what I did & my answer dosen't match the one in the
  83. calculus

    correct me if I'm wrong please. 1. What is the value of Lim 2x+3/4x-5 when x>00 (infinity?) a.-3/5 b.0 c.1/2 <.. my answer d.1 2. An object moves according to the law s = t^2 + 5t - 8. What is the average rate of change of s with respect to t in the
  84. calculus

    find the exact length of the curve y = ln(1-x^2), 0 <= x <= (1/2) So by doing the work I eventually get down to integral from 0 to 1/2 (1 + x^2)/(1-x^2) dx but I keep getting -1 + 1/(x-1) - 1/(x+1) after partial fractions which gives the answer
  85. geography

    Can you check these for me? 1. What is the name of the country completely surrounded by South Africa? My answer is Lesotho. 2. Which state capital is farther north, Utah's or Illinois? How do you know? My answer is Illinois's, because it is above the 40
  86. Math

    I need someone to check my answer, can someone please help me? Here is the problem: Business and finance. In a bottling company, a machine can fill a 2-liter (L)bottle in 0.5 second (s) and move the next bottle into place in 0.1 s. How many2-L bottles can
  87. Please check my maths answer?

    This is the question: The straight line y=2p+1 intersects the curve y= x+ (p^2/x) at two distinct points. Find the range of values of p. this is what i did: 2p +1 = x + p^2/x simplify.... x^2 + (2p+1)x + p^2 = 0 b^2-4ac > 0 (-2p-1)^2 - 4(p^2) > 0
  88. calculus

    1)Which of the following results in the graph of f(x) = x2 being expanded vertically by a factor of 4? the answer is f(x) = 4x2. can you explain how. 2)Which is true for the graph of y=(x^2-9)/(x^2-4). the answer is vertical asymptotes at x = ±2 . please
  89. Algebra-Please check

    Please check- Solve 3 > sqrt(3x) 3x >=o x>=o/3 x>=0 square both sides and you have 3x < 3^2 3x,9 x<9/3 x<3 answer is 0<=x<3 correct or not? 3(cube) sqrt(2-5) = 3 cube both sides = 2-5x = 27 -5x = 25 x = -5, correct? Thank you
  90. Algebra Answer Check

    What polynomial could you subtract from 5x^3 - 12x - x^2 + 9 - 12x^5 - 6x^4 to give a difference of 19 + 8x^3 - 18x - 19x^5 - 2x^2 - 8x^4? Is the answer k (the polynomial) = 7x^5 + 2x^4 - 3x^3 + x^2 + 6x - 28?
  91. Spanish

    Could you please explain the transalation and how to answer for the first and check my answer for the second. Estás en el correo. ¿Qué hora es? I think this says I'm in the mail and what hour is it-but that doesn't make sense. Please explain how I
  92. CHECK my answer in American government

    ** by my answer 4. In which way does a dictatorship differ from a democracy? (1 point) In a dictatorship, the power is held by one person and political party. Leaders in a dictatorship are always democratically elected. Dictatorships have short-term limits
  93. about jiskha/ math

    I had a dumb question awhile ago I had submitted a question ( Ted bought four lawn chairs for $ 22 each a pinic table for $ 212 and an umbrella for $85) etc anyways I had wanted someone to check my answer which they did , however I lost my paper Is there
  94. Pre-Calc-Please check my answer-I think I have it

    Could someone please check these-I had tried one last night but it was really wrong so I'm been working-hopefully these are correct. What are the roots of the equation and answers have to be simplified 2x^2 + 5x-10 =0 2x^2 + 5x-10+10=0+10 2x^2 + 5x = 10
  95. Pre-Calc-Please check my answer-I think I have it

    Could someone please check these-I had tried one last night but it was really wrong so I'm been working-hopefully these are correct. What are the roots of the equation and answers have to be simplified 2x^2 + 5x-10 =0 2x^2 + 5x-10+10=0+10 2x^2 + 5x = 10
  96. English Check answers

    2) Your online chat name should never contain your full name. True or False ~ (My answer is TRUE) 3) It is safe to tell your online acquaintance (someone you have NEVER met) your a. full name b. address c. phone number d. favorite music ~ (My answer) 4)
  97. URGENT! Last calculus question!

    Hey! So, I was wondering if someone could answer this. I am mad studying for my exam and I still have a few questions left that I just don't have time to answer, and the assignment is due tomorrow. Thanks and here is the question: Use calculus and
  98. Calculus

    Find the derivative of the integral from x to 6 of ln(1 + t^2). My answer is -ln(1+x^2).
  99. Calculus

    Determine if f(x)=5/(x-3)^2 is integrable on [0,2]. Justify your answer.
  100. Calculus

    Find the critical numbers of y=x(4-x)^1/2. The answer is x=8/3 but I got x=7/2.