1. Calc

    The time interval T, in minutes, between patient arrivals in an emergency room is a random variable with exponential density function p(t) = 0:125e^-.125t. What is the average time between patient arrivals? What is the probability of two patients arriving

    asked by Alice on March 29, 2017
  2. Chemistry

    The overall cell reaction occurring in an alkaline battery is: Zn(s) + MnO2(s) + H2O(l) ---> ZnO(s) + Mn(OH)2(s) a) How many moles of electrons flow per mole of reaction?...answer: 2. Mol e-Note: b) If 6.09g of zinc is oxidized, how many grams of manganese

    asked by Dalton on November 21, 2015
  3. Math/Trig

    Find the radius of a circle with a central angle of pi/7 and a length of the intercepted arc equal to 7.7 cm. Round your answer to the nearest tenth.

    asked by CJ on January 17, 2011
  4. Algebra

    Trying to figure out how to find all numbers for which the rational expression is undefined. 9/2z+5 Is the answer -5/2 or -10/9? I made a mistake in my typing when I asked the question earlier.

    asked by Cory on June 16, 2008
  5. medical coding

    How many codes are needed to correctly code accidental poisoning by consuming noxious mushrooms ? I can't seem to find the answer is there a web site that might be able to help me thanks

    asked by Anonymous on April 8, 2008
  6. Maths

    I understand that the answer to this is a+b-c, but I'm not sure how to show working out for this. Any help would be great. " O is any point in the plane of the square ABCD. The vectors OA, OB and OC are a, b and c respectively. Find the vector OD, in terms

    asked by Vectors on November 25, 2014
  7. physics

    It continues to fly along the same horizontal arc but increases its speed at the rate of 1.41 m/s.Find the magnitude of acceleration under these new conditions. Answer in units of m/s

    asked by Maria on November 11, 2015
  8. History

    I am in need of some help. I am not looking for the answer, just the direction I need to take. I've search my text book, but I cannot find any specific examples. Here is the question... What where some of the repercussions of Western exoansion after 1800?

    asked by Jessica on February 14, 2010
  9. social studies

    who design the great seal of the virgin islands You'll find your answer in this site. http://en.wikipedia.org/wiki/Flag_of_the_United_States_Virgin_Islands

    asked by Anastasia on August 29, 2006
  10. Math Questions

    Find Part of a Group Use a model to solve. 7/8 x 16= Answer: 14 8x2=16 7x2=14 6/10x10=6 10x1=10 6x1=6 Please let me know if I have the above answers correct? Thank you

    asked by Patrick on February 8, 2016
  11. engineering mathematic

    give that z = f(x,y). use partial derivatives to find δz/δx and δz/δy for xe^xz + z(xy+1)^3-sin x cos^2y=xy/z present your final answer in the simplest form.. please solve this problem....tq

    asked by waklu on March 15, 2011
  12. chemistry

    Find the initial concentration of the weak acid or base in an aqueous solution of pyridine (C5H5N) with a pH of 8.65. Kb = 1.80×10−9 . Answer in units of mol/L

    asked by Anonymous on January 28, 2015
  13. Calc

    function: f(x)=x^2-12x+35 Interval [6,6.5] How do you find the slope of the second line? Can you show this in the formula? and what would the answer be rounded to four decimal places as needed.

    asked by Jules on May 26, 2018
  14. matt/116

    Will someone please help me find the answer to this question please. How do you write a system of linear equations in two variables? Explain this in words and by using mathematical notation in an equation.

    asked by Sade C on February 12, 2013
  15. literature

    In the Merchant of Venice, What is Shylock’s initial reaction to Launcelot’s leaving his service? I googled it many times, but I couldn't find the answer! Thanks!

    asked by katie on September 22, 2016
  16. statistics

    Find the standard deviation, Sigma, for the binomial distribution which has the stated values of n and p. Round your answer to the nearest hundredth. n = 639; p = 0.7

    asked by todd on April 14, 2013
  17. Literacy

    Find the total land area of Belarus. A. 10,322,151 sq km B. 207,600 sq km C. 80,200 sq km D. 106,700 sq km my answer is B

    asked by Heather on January 17, 2012
  18. Scientific notatioin

    someone please answer these questions, i want to find out if these sentences are ,= The underslashes are blanks the x's mean multiply and the number after 10 is a power 3,000_3.0 x 10 3 8,800_8.8 x 10 4 659.000_ 6.59 x 10 5

    asked by Julie on October 3, 2007
  19. College pre calc

    Use bionomial formula to find the coefficient of the t^2 m^8 term in the expansion of (3t+m)^10. I got so far this 10C8 x 3^2 x t^2 x m^8 It tell me the next step is here =45 x 9 x t^2 x m^8 where did the 45 come from?? It doesn't explain that to me! The

    asked by Feather on November 20, 2015
  20. Probability

    Find the probability of obtaining between 50 and 55 tails inclusive when a fair coin is flipped 80 times. (answer accurate to four decimal places.)

    asked by Anna on November 22, 2009
  21. social studies

    Members of the _____ generate more mail to Congress than any other group. a. NRA b. ACLU c. NAACP d. AARP e. NEA I cannot find the answer for this, please help

    asked by Anonymous on October 8, 2010
  22. Math (derivative by limit process)

    Find the derivative of the function by the limit process. f(x)=1/sqrt(x) I've worked through my problem and got f'(x) to be -1/2x but the actual answer is -1/2x^3/2? Where did the 3/2 power come from? Any help is greatly appreciated!

    asked by Ray on October 16, 2016
  23. Georgia state history

    many new industries are attracted to georgia as a result of the.... A.fall line B.many rivers C.mild climate D.barrier islands Can you help me find my answer please.

    asked by Yaya on August 23, 2016
  24. Math 6b

    You roll a number cube twice. Find P(even then not 2). Write the probability as a fraction in simplest form. I don't know the answer to this one but I'm just asking for the process so I can solve it.

    asked by Jaden on May 19, 2017
  25. Math

    Describe a real-world problem that can be solved using the expression 29 divided by (3/8 + 5/6). Find the answer in the context of the situation. Please help! Due tomorrow. I would really appreciate it!

    asked by Secret Student on November 3, 2015
  26. Math help!

    I am having trouble completing my homework on finding the amount when the percent and the base are given. I need help with this question: Find 10.7% of 485. can you show all the steps on how you got this answer?

    asked by Lisa on November 15, 2008
  27. math

    1.you mix the letters s,e,m,i,t,r,o,p,i,c,a, and L thoroughly. Without looking, you draw one letter. find the probability that you will select a vowel. Write your answer as a fraction in simplest form. a. 12/5 b.5/12**** c.1/3 d.7/12

    asked by Pug lover on May 22, 2018
  28. American Corrections

    during the 19th century, american society became increasingly: a) rural b) homogeneous c) heterogeneous d) non-industrial I think the answer is either a or d but I just can not find it in my book anywhere...Please help me if you can. I have even googled

    asked by Melisa on October 18, 2010
  29. mastering physics

    Find an expression for , the tension in cable 1, that does not depend on . Express your answer in terms of some or all of the variables , , and , as well as the magnitude of the acceleration due to gravity .

    asked by Anonymous on March 31, 2011
  30. Trigonometry

    A=30 degrees, a=9 and b=8. Find the missing sides/angles. I did cos39=x/8 and reduced that to 8cos39=x. I got 6.92. But that's not a valid answer, so I can't go from there. What did I do wrong? Can you show me how to get the other answers as well, please?

    asked by Janie on January 24, 2010
  31. Trigonometry

    Given the equation for simple harmonic method d=1/12 sin(60 pi t) answer the following questions: b)Find the frequency i got 60pi c)Calculate the value of d when t=3 d)Determine the least positive value of t for which d=0.

    asked by Ryan on March 24, 2016
  32. Geometry

    The surface area of acone with height 15 cm is 500π square cm. Find the radius of the cone. Round your answer to two decimal places.

    asked by John on June 1, 2011
  33. Math

    Find values of x for which the piecewise function g(x): 1) (x+1)^2, x=

    asked by Beth on December 15, 2015
  34. math

    Find the domain of the function algebraically and support the answer graphically h times x equal the square root of 4-x squared divided by x - 3

    asked by tee on September 8, 2016
  35. calc

    Find the exact area of the surface obtained by rotating the curve about the x-axis. 9x = y2 + 36, 4 ≤ x ≤ 8 I keep on getting 4pi (3^(3/2) +1) so I tried to put the answer in that way and also 24.78pi But it is wrong

    asked by sam on July 6, 2014
  36. simple science

    please simplify why owls have 2 stomachs ok.. its not a problem.. i did in your other comment =) Please scroll down about half way in this site to find your answer. (Broken Link Removed)

    asked by Jenny on November 12, 2006
  37. Math/Trig

    Find the radius of a circle with a central angle of pi/7 and a length of the intercepted arc equal to 7.7 cm. Round your answer to the nearest tenth.

    asked by CJ on January 20, 2011
  38. Math/Algebra

    Find the x-intercepts of f(x)=4x^2-20. Give an exact answer using radicals as needed. Rationalize all denominators. Express complex numbers in terms of i.

    asked by Kelly on March 6, 2009
  39. Calc Help

    Find the derivative. Express answer in exponential notation without any negative exponents. y= 1/(sqroot5x+2)^3 This reads: 1 divided by the square root of (5x+2) to the third

    asked by Robert on February 16, 2007
  40. AP Chemistry

    Hey I have the AP Chem test coming up and i was wondering where I could find the answer key to some of the AP Chemistry tests like 1994, 1999, and 2002 MC and FR

    asked by Corey on April 14, 2008
  41. graphic design please help

    i tried to find the answer but i come up with nothing please help any links or any thing will be helpful In 1-2 paragraphs describe the importance of prioritizing your focus when designing for multiple purposes

    asked by helper/student on September 12, 2017
  42. Physics

    Five forces act on an object. (1) 56 N at 90°

    asked by Help on November 13, 2018
  43. mastering physics

    Find an expression for , the tension in cable 1, that does not depend on . Express your answer in terms of some or all of the variables , , and , as well as the magnitude of the acceleration due to gravity .

    asked by Anonymous on March 31, 2011
  44. math

    Use the formula t = (0.25) s1/2 to find the time t in seconds it will take a stone to drop a distance s of 200 feet. Round your answer to the nearest tenth of a second.

    asked by brian on August 20, 2013
  45. health

    I was wondering if a woman with severe symptoms of myotonic dystrophy could get pregnant. I looked through many websites, but couldn't find an answer. Any help is appreciated. Thanks!

    asked by Anonymous on November 14, 2007
  46. Physics

    Three point charges are on the x axis: −9 μC at −3 m, 2 μC at the origin, and −5 μC at 3m. Find the force on the first charge. The value of the Coulomb constant is 8.98755 × 109 N · m2/C2. Answer in units of N.

    asked by Lynn on February 2, 2018
  47. Math

    Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Find the function rule. [x| -2| -1| 0| 1| 2] [y| 9| 4| -1| -6| -11] PLEASE HELP!!! I REALLY NEED THIS GRADE!!!

    asked by Guy.Man.Dude on February 8, 2019
  48. Geometry

    I need to find the value of p in a right triangular prism when the surface area is 457.25. "P" is the distance between the bases The triangleular base is 9.9 x 6.2 choices are: 16.65 8.75 14.25 9.45 Thank you-could you explain how you got the answer

    asked by LynAnne on May 3, 2010
  49. pre-cal

    Can someone please show me how to find an equation for the line with the given properties. Parellel to the lines 3x-y= -3; containing the point (0,0) y= (then type your answer in slope intercept form)

    asked by ladybug on October 13, 2012
  50. trig

    find the next two positive and negative angles coterminal with the quadrantal angle. 90 degrees. would the answer be..... would it be 450, 810?????? and -630, -270 ????

    asked by Alison on August 29, 2011
  51. Calculus

    For the function f(x) = x/(3x+1) find the equation of the line which is tangent to the curve f(x) at x=2. Solve analytically (an exact answer is required) Please show steps. Thanks.

    asked by James on May 10, 2011
  52. physics

    Find the length of a simple pendulum that has a period of 5.00s . Assume g = 9.81 m/s2. Express your answer to three significant figures and include the appropriate units.

    asked by John on February 5, 2014
  53. Math

    Find the maximum area of a rectangle inscribed in the region bounded by the graph of y = (3-x)/(2+x) and the axes. (Round your answer to four decimal places.)

    asked by Meghan on April 7, 2018
  54. Statistics

    Find each uniform continuous probability and sketch a graph showing it as a shaded area.. If you please show me how you got the answer I would really appreciate. a. P(X < 10) for U (0, 50) b. P(X > 500) for U (0, 1,000) c. P(25< X < 45) for U(15, 65)

    asked by Shon on September 8, 2010
  55. Math/Statistics

    Suppose that A and B are events defined on a common sample space and that the following probabilities are known. Find P(A or B). (Give your answer correct to two decimal places.) P(A) = 0.32, P(B) = 0.36, P(A | B) = 0.24

    asked by Nora on May 29, 2013
  56. Math

    a 150-day loan for $2,500 has interest of $57. Find the rate to the nearest tenth of a percent. a. 3.2% b. 24.4% c. 10.4% d. 5.5% Please walk me through on how you got the answer. I have tried, and can not figure it out.

    asked by Cheyenne on April 21, 2015
  57. Fun Physics

    A box is given a push up a 16.1° incline. When it reaches the bottom again it is only going 0.59 its original speed. Find the coefficient of kinetic friction. *I know the answer is .06 but I don't know how!

    asked by Rose on December 30, 2016
  58. Math-college

    Find an​ nth-degree polynomial function with real coefficients satisfying the given conditions. n=4; i and 3 i are zero; f(-2)=65 f(x)= An expression using x as the variable. Simplify your​ answer.

    asked by Mike on July 25, 2017
  59. Biochemistry

    Which of the following peptide fragments would you expect to find buried in the center of a water soluble protein? Explain your answer. a) DEGKRGDK b) ALVWIFLF

    asked by Jenna on September 3, 2011
  60. science

    Can scientists use radiocarbon dating to find the age of a very tall, old redwood tree living in an old growth forest? Explain your answer.

    asked by help on February 10, 2014
  61. Math/Statistics

    Suppose that A and B are events defined on a common sample space and that the following probabilities are known. Find P(A or B). (Give your answer correct to two decimal places.) P(A) = 0.32, P(B) = 0.36, P(A | B) = 0.24

    asked by Nora on May 28, 2013
  62. physics

    a car accelerates uniformly from rest to a speed of 21.8 km/h in 5.9 seconds.find the distance it travels during this time. answer in units of meters

    asked by jane on September 18, 2011
  63. Calculus

    I had this on a test: Use the half-angle formula to find the exact value of the expresseion: sin 22.5 degrees my answer - 1/2 sqrt2 - sqrt 2 was wrong

    asked by kelly on November 27, 2007
  64. Algebra

    Find a rational function that satisfies the given conditions. Answers may vary, but try to give the simplest answer possible: Vertical asymptotes x = -4, x = 5; x-intercept (-2, 0)

    asked by Rachale on July 16, 2009
  65. Algebra

    Find a rational function that satisfies the given conditions. Answers may vary, but try to give the simplest answer possible: Vertical asymptotes x = -4, x = 5; x-intercept (-2, 0)

    asked by Angie on July 15, 2009
  66. Algebra

    Find a rational function that satisfies the given conditions. Answers may vary, but try to give the simplest answer possible: Vertical asymptotes x = -4, x = 5; x-intercept (-2,0)

    asked by Britney on July 15, 2009
  67. chemistry

    Find the number of moles in 12×10^24 CO2 molecules 1mole is equal to 6.0×10 ^23 ? 12x10^24 Then division of them but the answrr did not match the answer of the book

    asked by joanna on December 8, 2016
  68. Social Studies

    I trying to help my younger siblings with their work so i want to print out some worksheets from a website that have answer keys but i cant find any online, if you can give me a link to some that would be great.

    asked by Mohammed on December 8, 2013
  69. social studies

    I need a copy of the florida studies weekly for week 16. I tried to find the magazine online and cant. Do you know of any web site that might have it so I can read it and answer the questions?

    asked by Brianna on February 18, 2011
  70. Chemistry

    Confused again ok I have to find the number of atoms in carbon with a mass of 13.5. So this is what I didi. 13.5 / 12.01* 6.022 *10^23= 6.77x10^23 but the correct answer is 6.74x10^23 what have I done wrong

    asked by Monique on September 25, 2011
  71. Algebra II

    For the : ax^2 + bx + c How would you get what to put in (_+_)(_+_)= 0 Is it c doubled and then finding the factors that could equal b or 1/2 of b times c...? Could someone post how I could find the answer this way (shown above) (AND NOT THE QUADRATIC

    asked by Anonymous on May 18, 2010
  72. math

    eva wanted to find the quotient of 32 divided by 4. she started at 32 on the number line and counted backwards by 4. how does this give her the correct answer of 8

    asked by mythreyee on December 11, 2012
  73. science

    is there an explanation for sliding rocks in the death valley dried up lake? and if not do u have a hypotheis on how they do? this is making ne stressed trying to find an answer but this is very interesting?

    asked by SJH all the way_&lt;3 on September 9, 2011
  74. Trig

    Last question! Just seeing why I’m getting these wrong In a right triangle with a leg of 4 and a hypotenuse of 8, find the measure of all angles. Correct answer: 30deg, 60deg, 90deg How?

    asked by Kay on February 26, 2018
  75. Math

    Find the difference of all the prime numbers between10 and25 arranged in descending and ascending order.Give your answer in words.

    asked by Benjamin on August 9, 2011
  76. math

    Find the equation for the surface formed by rotating (x = 3*cos(y)) about the y axis. Your answer must not contain radical symbols (square root signs).

    asked by hamlet on April 29, 2012
  77. geometery

    find the area of a sector that has a central angle of 68 degrees and a radius of 10cm. Round you answer to the nearest 100th. (use 3.14=pie)

    asked by elijah on November 10, 2015
  78. circle

    two parallel chords of length 30 cm and 16 cm are draw on the opposite sides of center of a circle of radius 17 cm find the distance between the chord answer

    asked by surbhi kumari on November 1, 2012
  79. Statistics

    Suppose that A and B are events defined on a common sample space and that the following probabilities are known. Find P(A or B). (Give your answer correct to two decimal places.) P(A) = 0.34, P(B) = 0.41, P(A | B) = 0.2

    asked by Carl on June 8, 2013
  80. Math

    Find all real numbers x such that x^2 -8>0. Write your final answer in interval notation. I really just need a starter step. I remember these questions, but I'm not sure how to start. Please help!

    asked by Anonymous on January 9, 2014
  81. math

    Question: Find the given percent or fraction of the number. 14. 30% of 256 15. 25% of 2,048 16. 2/3 of 24 17. 5/6 of 90 How do i figure those out? I don't whant the answer I wanna know how to sovle them.

    asked by brittany on January 15, 2008
  82. World History

    26. The Italian fascists had a slogan: "Women into the Home." How did this support their political ideas? Any help would be greatly appreciated, I can't find the answer in my book. Please and thank you!

    asked by Alex on December 30, 2013
  83. vectors

    Find any vector w that is perpendicular to both u = 3j + 4k and v = 2i. i, j, k are basis vectors. Textbook answer: (0,4,-3) My attempt: used any scale factor variation, like 4j-3k or -8j+6k to get w=8j-6k How do i solve this the longer way?

    asked by luke on May 27, 2018
  84. Single Variable Calculus

    find an expression for the area under the graph of f(x)= (x^2)+x from x=2 to x=5 as a limit of a riemann sum (do not need to evaluate). the answer i got was: lim as x-> infinity of sigma from i=2 to n of (2+3i/n)^2+(3i/n)(3/n) is this correct?

    asked by Kelly on August 11, 2011
  85. math

    Find the equation for the surface formed by rotating (x = 3*cos(y)) about the y axis. Your answer must not contain radical symbols (square root signs).

    asked by hamlet on April 29, 2012
  86. Math

    find the x-intercepts by factoring g(x)=x^4-27x I'm really confused. All I can think is to factor out one x, but that only makes the x-intercept 0 and the answer is supposed to be 0 and 3. I don't understand what I'm doing wrong.

    asked by Sami on October 3, 2009
  87. math portfolio

    1. Please describe how to find a unit price. * Your answer And thaks to steve and ms. sue i turned a f into a d need help with portfolio to get higher grade *NOT ASKING TO CHEAT*

    asked by straight A student on January 13, 2017
  88. Math

    The area of a rectangle is 420 sq. meters. The width is 1 meter longer than half the length, find the dimensions of the court. Not sure how to do this, although I know the answer.

    asked by Randy on April 5, 2010
  89. anatomy and physiology II

    Any compound that can stimulate the body to produce antibodies is call what? You will find the answer at http://en.wikipedia.org/wiki/Antigen

    asked by alice on July 13, 2007
  90. Math CHECK MY ANSWER

    1. You mix the letters S, E, M, I, T, R, O, P, I, C, A, and L thoroughly. Without looking, you draw one letter. Find the probability that you select a vowel. Write your answer as a fraction in simplest form. A. 12/5 ** b. 5/12 c. 1/3 d. 7/12

    asked by Layla on May 6, 2016
  91. Math Help!

    1.Find the percent of decrease. Round your answer to the nearest tenth of a percent where necessary. 75 to 60 A. 20% B. 30%*** C. 40% D. 50% 2. Find the percent markup. Round to the nearest whole percent. Store's cost: $100.00 Selling Price: $160.00 A. 50%

    asked by Callie on December 4, 2014
  92. Math Help!

    1.Find the percent of decrease. Round your answer to the nearest tenth of a percent where necessary. 75 to 60 A. 20% B. 30%*** C. 40% D. 50% 2. Find the percent markup. Round to the nearest whole percent. Store's cost: $100.00 Selling Price: $160.00 A. 50%

    asked by Callie on December 4, 2014
  93. inverse

    If f(x)=cosx + 3 how do I find f inverse(1)? Thanks y = cos(x) + 3 the inverse of this is x = cos(y) + 3 solve for y and you have your inverse The cos function only has a range of [-1,1], so the range of f(x) is [2,4]. this means f inverse of 1 doesn't

    asked by Jen on October 20, 2006
  94. Calculus

    A bacteria culture contains 200 cells initially and grows at a rate proportional to its size. After half an hour the population has increased to 360 cells. (a) Find the number of bacteria after t hours. (b) Find the number of bacteria after 4 hours. I

    asked by toma on December 11, 2012
  95. 12th Grade Calculus

    1. a.) Find an equation for the line perpendicular to the tangent curve y=x^3 - 9x + 5 at the point (3,5) [* for a. the answer that I obtained was y-5 = -1/18 (x-3) ] b.) What is the smallest slope on the curve? At what point on the curve does the curve

    asked by Eliza on November 28, 2010
  96. english

    Rewrite the following sentences, focusing on the grammar area specified in the left column. To enter your answer, click next to the number and begin typing. If the sentence is already correct, write No Change. Dangling Modifiers Flying over the oak tree,

    asked by sandra on May 21, 2008
  97. Math (calculus)

    Prof gave us this question to practice but I do not know how to solve it. If you know please provide step by step with the answer so I can understand it. Thank you very much :) Suppose a rocket is launched from the ground with 10 seconds worth of fuel. The

    asked by Anonymous on November 16, 2014
  98. Algebra

    1.In this problem, we will analyze the profit found for sales of decorative tiles. A demand equation (sometimes called a demand curve) shows how much money people would pay for a product depending on how much of that product is available on the open

    asked by Noah on January 20, 2008
  99. Physics

    How do you set up and solve this question Ben (55 kg) is standing on very slippery ice when Junior (25 kg) bumps into him. Junior was moving at a speed of 8 m/s before the collision and Ben and Junior embrace after the collision. Find the speed of Ben and

    asked by Felice on September 30, 2017
  100. Maths

    Use the binomial series to find the Taylor series about 0 for the function f(x) = (1 + x)−3/5, giving all terms up to the one in x4. I have the answer; f(x)=1-3/5(x) +12/25(x^2) -52/125(x^3) + 234/625(x^4) but i am not sure how to work out the interval

    asked by s17 on April 24, 2016