Calculus (Answer Check)

88,628 results, page 23

  1. algebra (check answer)

    Sue can shovel snow from her driveway in 35 minutes. Bill can do the same job in 50 minutes. How long will it take Sue and Bill to shovel the driveway if they worked together. (1/35) + (1/50) T T=1 (1/35) + (1/50)= Is the answer: 21.25
  2. Algebra 2

    Solve the following for the indicated variable: #1. 2x+3y=7 solve for y. My answer is y=(7-2x)/3 Could you check this for me?
  3. math check

    Simplify: sqrt(x^5 y^2)+sqrt(9xy^2) is the answer sqrtx(x^2y+3y)
  4. Algebra

    Which equation has the graph parallel to the graph 9x + 3y =-22 y=3x-22**** y=-3x + 8 y=1/3x + 12 y = -1/3x-2 Please check my answer
  5. Math

    What is the value of the range of the function f(x)=x^2 + 2 for the domain value 1/4? A. y=2 B. y=2 1/4*** C. y=2 1/8 D. y=2 1/16 Can anyone check my answer?
  6. calculus

    can someone check these for me: 18. All edges of a cube are expanding at a rate of 6 cm per second. How fast is the volume changing when each edge is a) 2 cm and b) 10 cm. a)72 cm^3/sec b)1800 cm^3/sec 20. The formula for the volume of a cone is v=(1/3)(pi)(r^2)h. Find the ...
  7. Math - check answer

    A rifle bullet is fired directly upward from the ground. Its height above the ground at any instant of time t is given by the formula, s = 63t - 9.8t2. Assuming there is no air resistance how high will the bullet rise? height in meters = My Answer S'= 63-19t s"=0-19.6 Height ...
  8. Math

    1. Rishi ram obtained an installment loan for $3,000.00. He agreed to repay the loan in 6 monthly payments. His monthly payments is $516.50. What is the APR? MY ANSWER=0.33% 2. Tim Newman took out a simple interest loan of $1500 at a 10 percent interest for 12 months. After 4 ...
  9. Calculus

    The acceleration function (in m/s2) and the initial velocity v(0) are given for a particle moving along a line. a(t) = 2t + 2,    v(0) = −3,   0 ≤ t ≤ 5 (a) Find the velocity at time t. v(t) = t^2+2t-3 m/s (b) Find the distance traveled during the given time interval...
  10. calculus

    Find the solution to the differential equation dy/dx = (x^3)/(y^2), where y(2) = 3 I have: The integral of: dy(y^2) = the integral of: dx(x^3) (y^3)/3 = (x^4)/4 The answer is supposed to come out to be y= the cube root of: ( 3/4x + 15 ) Thanks The general solution is (y^3)/3...
  11. algebra

    Junior ate 30% of the sandwiches at the picnic. If he ate 1 ½ sandwiches, how many sandwiches were there? you cant solve this right? We can't?? Sez who? Let x denote the number of sandwiches. Then we're told 30%x=.30x=1.5 sandwiches. So x=1.5/.30=?? something you can do. its...
  12. Math median

    Please check my answer :) 25,28,22,27,25,20,30,23,27, and 29 Of the above numbers which one is the median ? I said 26
  13. Algebra II (check)

    Assume that no denominator equals 0. sqrt 16x^2y^4 = sqrt (4x)y^2 = 4xy^2(answer)
  14. I need someone to check this

    Add and Simplify: 100x/x+10 + x^3/x+10 I have the answer as X^3+100x/X+10 is this correct?
  15. Math check

    Factor each expression: x^2-144/x+4 times x^2-16/x+12 This is what I got: (x+12)(x-12)/x+4 times (x-8)(x+2)/x+12 How is the answer x^2-16x+48
  16. accounting

    Which of the following would you use to record your checking account transactions? A. A check stub or check book registry B. A deposit slip C. A signature card D. Checks or drafts A
  17. calculus

    A water tank has the shape of an inverted right circular cone with base radius 3 meters and height 6 meters. Water is being pumped into the tank at the rate of 12 meters3/sec. Find the rate, in meters/sec, at which the water level is rising when the water is 2 meters deep. ...
  18. calc help showed work

    If the function f has a continuous derivative on [0,c], the the integral(o to c) of f'(x)dx= a)f(c)-f(0) b)absolute value (f(c)- f(0)) c) f(c) d)f'(x)=c e)f"(c)-f"(0) My work: so the the answer to the integral is f(x) and when find the answer from o t0 c, it is f(c)-f(0). is ...
  19. calculus

    Integrate: dx/sqrt(x^2-9) Answer: ln(x + sqrt(x^2 - 9)) + C I'm getting the wrong answer. Where am I going wrong: Substitute: x = 3 * sec t sqrt(x^2 - 9) = sqrt(3) * tan t dx = sqrt(3) * sec t * tan t Integral simplifies to: sec t dt Integrates to: ln|sec t + tan t| + C t = ...
  20. Calculus

    1.(arrow above letter a pointing to the right) and (arrow above letter b pointing to the right) have the same direction, and they both have a magnitude of 6. What must be true about(arrow above letter a pointing to the right)and(arrow above letter b pointing to the right)? ...
  21. Math Help please Check my answer

    You have $59.95 in your wallet and want to buy some new CDs. If the CDs are $11.99 each, what number of CDs, x, can you buy? Write and solve an inequality. My answer: 11.99x ≤ 59.95 11.99x/11.99 ≤ 59.95/11.99 x ≤ 5
  22. another please help me check~calculus maths

    y=3e^(2x)cos(2x-3) verify that d^2y/dx^2-4dy/dx+8y=0 plz help me i tried all i could but it become too complicated for me here set u=3e^(2x) v=cos(2x-3) du/dx=6e^(2x) i used chain rule dv/dx=-2sin(2x-3) dy/dx=-3e^(2x)sin(2x-3)+cos(2x-3)6e^(2x) d^2y/dx^2 now i did lndy/dx=-ln3e...
  23. Basic programming principles

    What would be the answer of the following: (only type in your answer at the answer space provided) Result a = 5 b = 7 Answer = 15 Do while answer <= 47 Answer = answer + a – b a = a + 6 b = b – 1 loop end
  24. math

    Problem 1:A semi-circular garden has a radius of 10 meters. What is its area? ( Use pi =3.14) Answer:157m^2 Problem 2:The base of a cylindrical tank has a radius of 4.5 meters. What is its area? ( Use pi=3.14) Answer:65.585m^2 Problem 3:In the middle of a field a huge circle ...
  25. Algebra 1B--Check Please!

    1.) Determine the equation of the axis of symmetry. y = -5x2 - x + 9 Answer 1.) x=3/2 2.) Determine the equation of the axis of symmetry. y = -6x2 + 3x - 4 Answer 2.) x=-2/10
  26. Algebra

    I have this math probelm z-(3z)/(2-z)=(6)/(z-2) in my book it says to solve the equation. I have worked this problem many times and I keep comming up with different answers. When I use an online calculator to check my work it is giving me an answer of z=-3 I have not gotten ...
  27. Algebra - Can you PLEASE check - I"m stuck!

    Bob is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days: F(N)=10(1.02)^n 1. Starting from 0 days, plug x-values into our function to find out how many days it takes for the plant to...
  28. calculus

    Does anyone know of any free calculus websites? I'm taking a college class in the fall and would like to build my confidence since I am somewhat weak in math. Thank you in advance.
  29. Calculus Please Need Urgent3 :/

    Find the derivative of the following function using the appropriate form of the Fundamental Theorem of Calculus. F(x)= (s^2)/(1+3s^4)ds from sqrtx to 1 F'(x)=? Thank you so much guys!
  30. equations

    Can anyone check this answer out for me... 2(5-6y) = 2 x 5 , 2 x -6 = 10 - 12y or should the 12y appear before the 10 ??? am not sure of the rule... thanks
  31. Math -please check me

    what is the perimeter of a rectangle if the length is 5/9 cm and the width is 2/9 cm? a. 5/9 cm b. 1 5/9cm c. 7/9 cm d. 1 7/9 cm the answer I got was 14/9 please help me.
  32. Math (factoring)

    Can someone check my answer? 5x^3 - 40 =5(x^3-8) =5(x-2)(x^2+2x+4) Also, how do you factor x^6-y^6 as a difference of cubes? As a difference of squares, is it (x^3+y^3)(x^3-y^6)?
  33. Math check please

    Solve w= (va)/(r^2+a^2) for a. I applied the quadratic formula a= (v/w +- sqrt (v^2/w^2 - 4*(-wr^2)) /2 and I have the answer as a= (v+/- sqrt[v^2+4w^2r^2]/w
  34. algebra

    can someone please check my answer for me? 6-2x=6x-10x+14 I got x=-2 is this correct? if not please let me know which step I missed.. thank you
  35. Science Check Answer

    5. Acceleration is a change in position and speed. True or false I think False
  36. Fitness (Check answers)

    The lack of balance can lead to disease. True or false My answer is FALSE.
  37. Calculus

    A 18 ft ladder is leaning against a wall. If the top of the ladder slides down the wall at a rate of 3 ft/s, how fast (in ft/s) is the bottom moving along the ground when the bottom of the ladder is 9 ft from the wall? Also, this one. I have done the pathag theorem and then dy...
  38. Math check

    multiply: sqrt-25 sqrt-100 is the answer 50?
  39. Math Check

    2x^2-5x-3/3x^2-5x-2 times 2x^2+11x+5/x^2+3x-10 this is what I have: (x-3)(2x+1)/(x-2)(3x+1) times (2x+1)(x+5)/(x-2)(x+5) How is the answer x-3/3x+1
  40. Math

    5 1/2 x 3 1/3= 11/2 x 10/3= 110/6 110/6=18 2/6 Please double check the answer thank you
  41. Math

    7 1/5x 2 1/6= 36/5 x 13/6=468/30 468/30= 15 6/30 Can you please check on the answer and the above.
  42. Pythagorean theorem

    How do I check my answer when my triangle is an Acute Triangle?
  43. calculus

    an airplane flying due east at 400 km/h pasess over an airport 12 minutes before a second plane flying south 30 degrees west at 500 km/h.if the airplanes are at the same altitude how fast will they by seprating when the seccong pane is over the airport.?When will they be the ...
  44. Math2[Please Check Again]

    Problem: a^2-9 a^2-3a ----- * -------- a^2 a^2+a-12 What I Got: 3-3a ---- a-4 *Please Check My Work.* Nope. factor the denominator to a^2(a+4)(a-3) The last factor divides out in the numerattor (second term factors to a(a-3). The a in the numerator reduces the denominaor a^2 ...
  45. Punnet Squares- Check my answer please.

    A species of clam shows incomplete dominance in the expression of its shell color. RR is the genotype for red shell, Rr is genotype for an orange shell, and rr is the genotype for the yellow shell. Predict the outcome of a cross between an orange shelled clam and a yellowed ...
  46. math, algebra

    Can someone check this for me : Find the gcf for each of the following groups of numbers: 36,64, and 180 My answer: gcf=4 Find the lcm for each of the following groups of numbers which ever method you wish:8,15, and 20 My answer: Lcm=1 Find two factors of 15 with a difference ...
  47. cultural diversity

    NAEYC supports "third space" thinking as a desirable technique for use in A. stimulating children's right-brain processes. B.enhancing staff performance in the early childhood setting. C.Resolving conflicts, especially those involving cultural issues. D.training children to ...
  48. socialstudies

    why did thomas jefferson write the declaration of independence? A.to end revolutionary war and emphasize quailty. B.to re-unite the country after the civil war and emphaize democracy for all. c.to guarantee the rights and freedom of U.S. citizens. D.to explain and justify the ...
  49. chem

    For this problem, will someone please check my answer? How many grams of oxygen are produced in the decomposition of 5.00g of potassium chlorate? KClO3(s)--->KCl(s)+O2(g) [the equation may not be balanced] My answer is 1.96 g of O2. The balanced equation is 2KClO3 ==> ...
  50. Calculus

    The area bounded between the line y=x+4 and the quadratic function y=(x^2)-2x. Hint: Draw the region and find the intersection of the two graphs. Add and subtract areas until the appropriate area is found. I found the intersection points as (-1,3) and (4,8). I'm not sure what ...
  51. overview of teaching techniques

    which of the following statements is a good technique to use when tutoring a student? (a)''the next problem is easy.you should be able to get it.'' (b)''this next problem is hard,but lets see if you can get it.''(my answer) (c)''johney and erica can do these problems,why cant ...
  52. Math

    1. When their child was born, Elaine and Mike Porter deposited $5,000 in a savings account. The money ears interest at 6 percent compounded quarterly. How much will the account be worth when their child celebrates her second birthday? My answer= $5,632.46 2. Asia Desai ...
  53. Personal Fitness (Check answers)

    5: Which of the following shows effective communication? a) A student says " I hear what you are saying, but I don't care." b) A student says " I hope you feel better soon. What can I do to help you?" (~~ MY ANSWER is B. ~~) c) A student says " You make me so anger. Why do you...
  54. Pre-Calculus

    Hi! I have three questions that I need checked over just to make sure I understand it. Thanks! :) 1.) What is the slope of the line that passes through (5, 8) and (-2, 6)? My answer: -2/7 2.) If Segment AB || Segment CD and the slope of Segment AB = 1/2, what is the slope of ...
  55. Ethics

    please check my answer thanks :) Mediation has which type of characteistic ? A. THe court controls B. The parites remain in control C. THe mediator decides whi is right I said B
  56. Anatomy and Physiology

    Please check my answer thank you An approach to skin cancer treatment would involve surgery, either alone or combined with what ? I think chemotherapy
  57. 7th grade health

    Please check my answer thanks :) Blood flows from the left ventricle of the heart to thr general circulation through the what ? I think it is aorta
  58. Health/ Basic Clinical Procedures

    Please check my answer thanks An organism that can exist only in the presence of oxygen ? A. anaerobic B. oxygenopyhile C. aerobic D. heterotopy I think it is C
  59. Health/Specialty Exams and Advance Techniques

    please check my answer thanks The surgical procedure that involves dilating and scraping endometrial tissue is referred to as colposcopy
  60. Dog Hunting Training

    Please check my answer thanks :) Which of the following is not considered to be a natural,or inherited ablity ? A Nose B Pointing C Search D Delivery to hand I picked D
  61. algebra please check :(

    Are the lines parallel and how did I come to this conclusion? y + x = -5 and y - x = -5 first I it so y is by itself y = -x -5 second equation = y = x +5 Would the answer be yes? y= -5 and y = 5? Not sure I really understand thx.
  62. Geography check

    This geographical feature is made up of two parts and continues through Eritrea, Ethiopia, and Tanzania. The answer is The Great Rft Valley, correct?
  63. math

    Carrie said that the best estimate for the sum of the heights is 10,000 feet. Explain hoe you would check her answer to see whether it is reasonable.
  64. Science 7R - HW Qs. Check

    1. The biosphere includes all the air, land, and water where ____ exist a) soil b) coral c) an abiotic facter d) life My Answer - a (or b....) am i correct??????
  65. Spanish, CHECK?

    Chose the correct informal command for the following verb (usar) No ______________ mi computadora. A. usas B. usaste C. usarás D. uses E. usa My answer: E
  66. check math

    If boys ad girls are equally likely to be born, what is the probability that in a randomly selected family of eight children, there will be at least one a boy. Answer 0.984
  67. math check

    Find the area under the standard normal curve between -1.32 and the mean, P(-1.32 < z < 0.00). (Give your answer correct to four decimal places.) 0.0968
  68. math check

    Find the critical value for the hypothesis test, given the following. (Give your answer correct to two decimal places.) Ha: ó1 > ó2, with n1 = 8, n2 = 10, and á = 0.025 F = 2.24 is what I got .
  69. statistic check

    Find the critical value for the hypothesis test, given the following. (Give your answer correct to two decimal places.) Ha: ó1 > ó2, with n1 = 8, n2 = 10, and á = 0.025 F = 2.60 is what I got.
  70. Math

    2(4m+6)=8m+6 8m+12=8m+6 -6= -6 _________ 8m+6= 8m -8m. =-8m __________ 6=m I think in doing something wrong just not to sure when I check both sides give me different answer can someone explain please
  71. Social Studies Please Check Answer

    where do most people in arabia and iraq live? a.in the fertile crescent b.in the rub' al-khali c.in cities d.in and around mecca a? b? or d?
  72. Science

    Which of the following carries oxygen to every cell of your body? alveoli bronchi capillaries lungs I think its number 2 but i'm not sure, Could someone check my answer?
  73. Health

    1. The _____ is something that should be tested according to the comfort level of the golfer. A. Grip** B. Putting green C. Sand trap D. Tee Check my answer?
  74. SOCIAL STUDIES CHECK ANSWER PLEASE

    what term would best describes the relationship between israel and palestinians? A) friendly B)prosperterious C)hostile**** D)distant
  75. History

    Why was the cowboy more of a legend than a reality. I think it's cowboys were typically low paid young people who needed a job Can you please check my answer.
  76. Math

    Check And Help? 1. √x-10+4=0 Answer: x=26 2.√3x+1=7 Answer: x=16 Help With These: 3. √x+6=x how would you solve this? I don't get how would It? 4. √x+4 = √x-1+1 it looks similar to problem 2 but it doesn't quite have the same amount of numbers in ...
  77. Social Studies

    Please help me by checking the following answer to the question. Which of the following was part of the Great Compromise reached at the Constitutional Convention? A. Every state would have two seats in the Senate. B. Some slaves would be included in the population count. C. ...
  78. calculus and chemistry

    A container of hot liquid is placed in a freezer that is kept at a constant temperature of 10°F. The initial temperature of the liquid is 160°F. After 5 minutes, the liquid's temperature is 60°F. How much longer will it take for its temperature to decrease to 20°F? (Round ...
  79. 5th grade LA

    Can you check the following? Past Perfect Tense 1. My teacher __ us three chapters, but I only finished one of them. (assign) answer:had assigned 2. Before their fossils __, we knew nothing about dinosaurs. (discover) answer:had been discovered 3. The team celebrated because ...
  80. Algebra

    Write an equation for the translation so the graph has the given vertex. 1. y=-|x| vertex (-5,0) 2. y=2|x| vertex (-4,3) 3. y=-|x| vertex (p,q) I really have no idea how to even begin these, but I do know the answer to # 2 is y=2|x|+11 and #3 is y=-|x-p|+q Thanks in advance. ...
  81. Social Studies

    Please review the question and check my answer below. Thank you tutors. Q: What was the effect of the McKinley on the value of Hawaiian-grown sugar? My answer: Funded the "most favored" status of Hawaiian-grown sugar and rewarding American producers with a 2 cent per pound ...
  82. calculus

    Find an equation of the tangent line to the curve at y = cosx - sinx (pi, -1) I found y'= -sinx - cosx and used the equation of the tangent y = mx +b I input the values and get -1 - [(-sinx - cosx) * pi] = b the answer says it is y = x - 1 - pi I have no idea how the answer ...
  83. math,algebra

    I'm not understanding so the answer should read as follows and steps: 15x^4y^9 divided by 3x^2y^2 = 5x^2y^7 Can you check this one for me. Direction. Simplify each of the following expressions where possible. 6x^2y^3+9x^2y^3 divided by 3x^2y^2 My answer: 15x^4y^6 divided by 3x...
  84. Calculus

    A ball is thrown up on the surface of a moon. Its height above the lunar surface (in feet) after t seconds is given by the formula h=308t−(14/6t^2) Find the time that the ball reaches its maximum height. Answer = Find the maximal height attained by the ball Answer =
  85. Calculus

    Use the Midpoint Rule with the given value of n to approximate the integral. Round the answer to four decimal places. int_2^10 2 sqrt(x^2+5)dx text(, ) n=4
  86. Calculus

    Use the Midpoint Rule with the given value of n to approximate the integral. Round the answer to four decimal places. int_2^10 2 sqrt(x^2+5)dx text(, ) n=4
  87. Calculus - First Derivatives

    Find K'. Y = K^(0.25) * L^(0.75).... relates to Cobbs-Douglas function (dL/dK) = 0.25 (K/L)^(0.25) I got to this.... but answer is... (dL/dK) = 0.25 Y/L <--- Please provide a full solution (all steps..) to get to this....
  88. calculus

    The total area enclosed by the graphs of y=10x^2–x^3+x y=x^2+19x This is a really long problem I keep getting the answer of 20.25 but it is incorrect I don't know where I am going wrong?
  89. Calculus

    Use your calculator to approximate the integral using the method indicated, with n=100. Round your answer to four decimal places. sqrt(x+4)^dx between 4 and 0.
  90. math-calculus

    15+2y-y^2/3y^2-16y+5 (5-y)(3+y)/(3y-1)(y-5) i factor out a negative one from (5-y) to make it same like (y-5) (-1)(-5+y)(3+y)/(3y-1)(y-5) i cancel off y-5's. and i get (-1)(3+y)/(3y-1) but the real answer have to be 3+y/1-3y what i doing wrong?
  91. calculus test corrections. 1 question

    Find the minimum value of f(x, y) = y – x + 1 for the polygonal convex set determined by this system of inequalities. x > 0 y > 0 2x + y< 4 the answer is -1. please tell me why
  92. calculus

    Find the values of p for which the following series is convergent. The sum from n=2 to infinity of 1/(n(ln(n))^p). I tried the integral test using u-substitution, and I know the answer is p>1, but I'm not quite sure how to get there. Thanks for the help.
  93. Calculus

    How would I solve the limit for this sequence. [n^(2)]*[1-cos(2.4/n)] I used L'Hopital's rule by putting n^(-2) in the bottom, but I got the wrong answer of -1.44 in the end. Please help, thanks!
  94. Calculus

    Use the Evaluation Theorem to find the exact value of the integral ç^6 2 2x+1dx 1) What is the antiderivative? 2)What is theupper and lower limit? 3) Give final answer.
  95. Calculus

    May someone answer this question for me? Thank you! I appreciate it. a.) Use the definition of continuity and the properties of limits to show that the function is continuous on the given interval. f(x)=(2x+3)/(x-2), (2, ∞)
  96. Calculus 2 - Indeterminant forms

    lim (2^x-3^x)/(cos(x)-1) x->0 The answer the book has for this is "diverges." I know I'm supposed to use L'Hospitals' rule, but I'm not sure how. Can you walk me through the steps?
  97. Pre-Calculus

    Umm, how do I find this? with work? Use a calculator to evaluate the function at the indicated value of x. Round your answer to four decimal places. f(x) = 3 ln x x = 0.32
  98. Please check my Calculus

    1. Find all critical values for f(x)=(9-x^2)^⅗ A. 0 B. 3 C. -3,3 D. -3, 0, 3 E. none of these I got D. I found the derivative and solved for critical numbers. 2. Find all intervals on which the graph of f(x)=(x-1)/(x+3) is concave upward A. (negative infinity, infinity) ...
  99. English-(PLEASE CHECK)

    Who is right about Willy Harris? My Answer- Ruth But is Mama also right?
  100. dog behavior

    please check my answer thanks true of false hackles up is an example of a signal I said true
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