Questions Asked on
June 18, 2013

  1. Calculus

    By recognizing each series below as a Taylor series evaluated at a particular value of x, find the sum of each convergent series. A) 1+5 + (5^2)/(2!)+(5^3)/(3!)+(5^4)/(4!)+...+ (5^k)/(k!)+...= B)

    asked by Cole
  2. Calculus

    The management of the UNICO department store has decided to enclose a 917 ft2 area outside the building for displaying potted plants and flowers. One side will be formed by the external wall of the store, two sides will be constructed of pine boards, and

    asked by Anonymous
  3. chemistry

    the heat of vaporization for water is 540 cal/g. how many kilocalories are needed to change 22g of liquid water to steam at 100*c?

    asked by jason
  4. physics

    a polar satellite is launched at 850 km above Earth .find its orbital speed.

    asked by Arshia fatima
  5. Physics

    A golf ball rolls off a horizontal cliff with an initial speed of 12.2 m/s. The ball falls a vertical distance of 17.3 m into a lake below. (a) How much time does the ball spend in the air? (b) What is the speed v of the ball just before it strikes the

    asked by Justin
  6. physics

    A cement block accidentally falls from rest from the ledge of a 51.5 -m-high building. When the block is 12.9 m above the ground, a man, 1.60 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have to

    asked by louis aaaa
  7. Statistics

    Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. A sample of 36 babies is selected. What is the probability that the average weight of the samlpe is less than

    asked by Anonymous
  8. Physics

    The latent heat of fusion of alcohol is 50 kcal/kg and its melting point is -54oC. It has a specific heat of 0.60 in its liquid state. Calculate the energy needed to melt 2.0 kg of solid alcohol at -54o and raise it to a temperature of -4°C.

    asked by Isis
  9. statistics

    The distribution of weekly salaries at a large company is right skewed with a mean of $1000 and a standard deviation of $350. What is the probability that the sampling error made in estimating the mean weekly salary for all employees of the company by the

    asked by Anonymous
  10. Chemistry

    The temperature of a 12.58g sample of calcium carbonate increases from 23.6degrees celcius to 38.2 degrees celcius. If the heat capacity is 0.82J/g-K, how many Joules of heat are absorbed

    asked by Tommy
  11. college algebra

    a rectangular lot whose perimeter is 440 feet is fenced along three sides. an expensive fencing along the lot's length cost $16 per foot, and an inexpensive fencing along the two side widths costs only $11 per foot. The total cost of the fencing along the

    asked by corea
  12. math

    On Team B 80% of the football players weigh more than 200 pounds. If 41 men are on the team, how many weigh more than 200 pounds?

    asked by sarah
  13. chmistry

    A 4.98 g sample of aniline (C6H5NH2, molar mass = 93.13 g/mol) was combusted in a bomb calorimeter with a heat capacity of 4.25 kJ/°C. If the temperature rose from 29.5°C to 69.8°C, determine the value of ΔH°comb for aniline.

    asked by love
  14. Physics

    Calculate the total energy of 4.0 kg object moving horizontally at 20 m/s 50 meters above the surface. Please help me!!!!!

    asked by Isis
  15. math

    When the Senior class decided to order T-shirts, they were quoted a price of $7.50 per shirt plus a setup fee. The total cost for 300 shirts was $2,450. Write an equation in the form y = mx + b that represents the cost, y, for x shirts.

    asked by alex
  16. geometry

    A preimage includes a line segment of length x and slope m. If the preimage is dilated by a scale factor of n, what are the length and slope of the corresponding line segment in the image

    asked by ELIJAH
  17. Math

    A company manufactirung snowboards has fixed costs of $200 per day and total cost of $3800 per day at a daily output of 20 boards. (A( Assuming that the total cost per day, C(x), is linearly related to the taotal out per dau,x, write an equation for the

    asked by sandra
  18. physics

    A woman on a bridge 81.6 m high sees a raft floating at a constant speed on the river below. She drops a stone from rest in an attempt to hit the raft. The stone is released when the raft has 9.13 m more to travel before passing under the bridge. The stone

    asked by louis aaaa
  19. Precalculus

    Lynbrook West, an apartment complex, has 100 two-bedroom units. The monthly profit (in dollars) realized from renting out x apartments is given by the following function. P(x) = -10 x^2 + 1780 x - 54,000 To maximize the monthly rental profit, how many

    asked by Anonymous
  20. Math

    Determine the digits of Y from these clues. The digits of Y add to 18. The first digit is 3 times the third digit. The second digit is 2 times the third digit. Y is a three digit number.

    asked by bob
  21. Math

    George studied 1/4 hour on Monday and 3/8 hour on Tuesday. How long did he study altogether on both days?

    asked by steven
  22. Physics

    A pulley system lifts a 500-lb block 1.0 foot with an effort of only 50 lb. If the 50 lb moves 30 feet, calculate the efficiency of the pulley system.

    asked by Isis
  23. electronics technician

    1. A circuit contains a 10 F capacitor and a 30 F capacitor connected in parallel. What is the total capacitance of the circuit? A. 7.5 F C. 40 F B. 20 F D. 47 F 2. What is the time constant of a 2 mH inductor and a 200  resistor connected in

    asked by mompati
  24. writing process part 1

    I need this paragraph proof read if that's OK. also need to know if it's a fully devolved the topic a high school diploma is important to my future. A high school diploma is important to my future for a number of reasons. The First being to attend college

    asked by krystal
  25. math

    Express your answer as a decimal (to the nearest hundredth). What part of an hour is 40 minutes?

    asked by sarah
  26. Math

    Weights of the vegetables in a field are normally distributed. From a sample Carl Cornfield determines the mean weight of a box of vegetables to be 180 oz. with a standard deviation of 8 oz. He wonders what percent of the vegetable boxes he has grouped for

    asked by sarah
  27. Calculus

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

    asked by Anonymous
  28. geometry

    Triangle ABC is similar to triangle DEF. The sides of ABC are 5,8 and 11. What is the length of the shorttest side of DEF if its perimeter is 60?

    asked by mily
  29. physics

    If a dog whistle has a frequency of 30000 hertz. What is the wavelength of the sound emitted (Approximate speed of sound is 340 m/s)

    asked by Anonymous
  30. statistics

    A study of peach trees found that the average number of peaches per tree was 625. The standard deviation of the population is 140 peaches per tree. Ascientist wishes to find 80% confidence interval for the mean number of peaches per tree. How many trees

    asked by betsy
  31. Maths

    ABC is the segment of a circle with center O. This segment is enclosed in a rectangle APQC. Given that AC=32cm and AP = 8 cm, calculate; (a) The radius of the circle. (b) The angle of AOC in both degrees and radians (c) The area of the shaded region.

    asked by Shane
  32. physics

    Two 4.3 kg physical science textbooks on a bookshelf are 0.25 m apart. What is the magnitude of the gravitational attraction between the books

    asked by goliath sakala
  33. electronics technician

    19. In a solenoid, where is the magnetic field strongest? A. Outside the coil C. At the north pole B. Inside the coil D. At the south pole 20. What is a typical coil voltage for a low-voltage relay circuit? A. 2 VDC C. 12 VDC B. 5 VDC D. 120 VDC 21.

    asked by mompati
  34. Physics

    A planet has a mass of 6.22 × 1023 kg and a radius of 2.51 × 106 m. (a) What is the acceleration due to gravity on this planet? (b) How much would a 77.7-kg person weigh on this planet?

    asked by Valeria
  35. physics

    This qusetion was about a journey between two towns. During the start of the journey the odometer reads 39593 ( the reverse of the no is also the same) and at the end of the journey again the odometer reads a number similar to prior one....If the max speed

    asked by muthukumar
  36. Calc

    A street light is at the top of a 16ft tall pole. A woman 6ft tall walks away from the pole with a speed of 6ft/sec along a straight path. How fast is the tip of her shadow moving when she is 30ft from the base of the pole?

    asked by Morgan
  37. Physics

    A uniform meterstick pivoted at its center has a 80.0 mass suspended at the 27.0 position. At what position should a 85.0 mass be suspended to put the system in equilibrium? What mass would have to be suspended at the 90.0 position for the system to be in

    asked by Anonymous
  38. Math

    The phone company charges a flat rate of $2.50 plus and additional $0.50 each minute for a long-distance phone call. Write an equation to represent the total cost of making a long-distance phone call.

    asked by Yasmen
  39. Physics

    A tennis ball is struck and departs from the racket horizontally with a speed of 27.3 m/s. The ball hits the court at a horizontal distance of 18.7 from the racket. How far above the court is the tennis ball when it leaves the racket?

    asked by Justin
  40. Ashford

    16. Barney: Last winter, I slipped on the outside stairs of PineTree Café and broke my leg. My fall was caused by ice on the stairs that the restaurant failed to remove. Since the restaurant clearly did not provide a safe atmosphere for its customers, I

    asked by Mallory
  41. World History

    In China, the rise of the idea of a new Buddha who would inaugurate a golden age and give power to his followers led to A. a resurgence in the power of Confucian elites. B. the rise of the Ming dynasty. C. the rise of the Yuan dynasty. D. a revolution in

    asked by kim
  42. Spanish 1

    1)Hay que ______ agua, ¿verdad? A. conserva B. conservar C. conservé D. conservo I said B. 2) Quiero dormir. Por favor, _____ la luz. A. apagamos B. apago C. apagué D. apaga I said B. 3) ¿Dicen Uds. La verdad? Sí, siempre la __________. A. decimos B.

    asked by Eri
  43. Physics

    A football is punted at an angle of 44.6 with the horizontal. if it stays in the air for 3.6 seconds, what was the initial velocity of the football?

    asked by Nogard
  44. Physics (algebra)

    the sonar of a navy cruiser detects a submarine that is d=4601 ft from the cruiser. the angle between the water level and the submarine is 0=32 degrees. What formula should I use to solve?

    asked by Sara
  45. Physics

    A rope goes over a circular pulley with a radius of 5.5 If the pulley makes 6 revolutions without the rope slipping, what length of rope passes over the pulley?

    asked by Anonymous
  46. physics

    A police car is traveling at a velocity of 15.0 m/s due north, when a car zooms by at a constant velocity of 44.0 m/s due north. After a reaction time 0.700 s the policeman begins to pursue the speeder with an acceleration of 5.00 m/s^2. Including the

    asked by louis aaaa
  47. Chemistry

    At constant volume, the heat of combustion of a particular compound is –3547.0 kJ/mol. When 1.239 g of this compound (molar mass = 196.58 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 8.539

    asked by Jessica
  48. Physics

    Calculate the change in potential energy of a 86.9 kg man when he takes an elevator from the first floor to 15th floor, if the distance between floors is 4.47 m. *This building has a thirteenth floor! Keep in mind that he stands on the floor of the top

    asked by Tony
  49. math formulas needed

    Use the following table to answer the questions. (Give your answers correct to two decimal places.) x 1 1 3 3 5 5 7 7 9 9 y 3 2 6 1 3 3 3 2 5 3 (a) Find the equation of the line of best fit. y hat = + x (ii) Graph this equation on a scatter diagram. (Do

    asked by Tom 12
  50. Physics

    Two forces F1 = -7.50i + 6.00j and F2 = 8.40i + 7.50j are acting on a mass of m = 6.20 kg. The forces are measured in newtons. What is the magnitude of the object's acceleration? Can you show me step by step? I'm trying to study for an exam.

    asked by Sam Cole
  51. statistics

    Determine which of the following four population size and sample size combinations would not require the use of the the finite population correction factor in calculating the standard error. a. N = 2500; n = 75 b. N = 150; n = 25 c. N = 15,000; n = 1,000

    asked by Rald
  52. Math

    Can someone please double check my answers. 1. What pattern does the logarithmic function exhibit? a. y = b+a(lnx) b. y = a+b(lnx) c. y = ax+b d. y = axb I think A and B both look right..I just went with B. 2. Let f(x) = log6x and g(x) = log1/2x. For all

    asked by mysterychicken
  53. Calculus

    Find the general expression of the kth nonzero term in the taylor series f(x) = 3/(1+x), for k= 0, 1, 2,...

    asked by John Lewis
  54. maths

    there are some sheeps on a farm.these sheeps have 84 legs altogether,how many sheeps are there on the farm

    asked by afia
  55. Math

    The problem I have to solve is log with base 2 ^6 multiply by log base 6 ^ 8. I use the change of base formula and got log6/log2 * log8/log6 Which become log6/log2 * log2()^3/ log 6 I'm stuck here thanks.

    asked by Shadow
  56. math

    a number rounds off to 4000.the digits in the hundreds place is twice the digits in the tens place.the sum of the digits is 12.the number uses only two different digits.find the number.

    asked by shirley nicole silva
  57. social studies

    Please check: 1. North Korea became a communist country by following the example set by Cuba (FALSE) 2. Congress set up a NASA in response to the Soviet blockade of Berlin (FALSE) 3. President Johnson tried to stop China from becoming a communist country.

    asked by Celest
  58. Math

    Γ 1 is a circle with center O 1 and radius R 1 , Γ 2 is a circle with center O 2 and radius R 2 , and R 2

    asked by best
  59. urgent physics..

    Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the

    asked by jack
  60. algebra

    Two trains leave stations 50 miles apart at the same time heading toward one another on parallel tracks. Train A is traveling 20 miles an hour and Train B is traveling 30 miles an hour. They pass eachother in how many hour(s).

    asked by key
  61. decimals

    how is 2.3-20=17.7 reasonable

    asked by sofia
  62. physics

    A 13 g bullet is stopped in a block of wood ( m w = 3 . 1 kg). The speed of the bullet- plus-wood combination immediately after the collision is 0 . 57 m / s. What was the original speed of the bullet? Answer in units of m / s

    asked by fabian
  63. modules

    For what control problems do we need to use analog modules or HMI devices

    asked by adam
  64. math

    solve the system of equations y = x + 4 y = x^2 + 9x +16

    asked by meteka
  65. statistics

    the mean of sat scores of a specific month is1000 with a standard deviation of 100. find the 90 percentiles . assume that the sat score is normal distributed

    asked by Alex
  66. Physics

    A mass M is initially at rest on a horizontal surface, μs=0.30 and μk=0.20 . A horizontal string then pulls M with a tension T. N is the normal component of the contact force. All quantities below are magnitudes. Answers are either true or false. 1)The

    asked by Cori Smith
  67. Physics

    In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0475 s, during which time it experiences an acceleration of 417 m/s2. The ball is launched at an angle of 59.7° above the ground. Determine the (a)

    asked by Justin
  68. Physics

    A cylinder with a diameter of 16 rolls with an angular speed of 0.055 on a level surface. If the cylinder experiences a uniform tangential acceleration of 0.020 without slipping until its angular speed is 1.0 , through how many complete revolutions does

    asked by Anonymous
  69. Calculus

    Find the point on the line 4x+3y-4=0 which is closest to the point (5,2)

    asked by Morgan
  70. Calculus

    A fence 3 feet tall runs parallel to a tall building at a distance of 3 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building. Answer the following: The distance along

    asked by Morgan
  71. math

    Can someone please double check my answers. 1. What pattern does the logarithmic function exhibit? a. y = b+a(lnx) b. y = a+b(lnx) c. y = ax+b d. y = axb I think A and B both look right..I just went with B. 2. Let f(x) = log6x and g(x) = log1/2x. For all

    asked by mysterychicken
  72. physics

    Adventurous Mary tries a new game: she puts on her rollerblades and throws the ball towards the wall, lets it bounce off, catches it again, throws it right back, and so on. She notices a strange thing: after the second throw, she is unable to catch the

    asked by jack
  73. Physics

    Two blocks with masses M1=8.50kg and M2=1.40kg are attached by a thin string which goes over a frictionless, massless pulley. M1 slides on an incline and there is friction between M1 and the incline. The incline is at an angle of 23.0 degrees from

    asked by Sam Cole
  74. physics

    Suppose a car is traveling at +20.7 m/s, and the driver sees a traffic light turn red. After 0.314 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 5.00 m/s2. What is the stopping distance of the car, as measured

    asked by dre
  75. physics

    A 4.3 g mass is released from rest at C which has a height of 0.8 m above the base of a loop-the-loop and a radius of 0.31 m. The acceleration of gravity is 9.8 m/s2 . Find the normal force pressing on the track at A, where A is at the same level as the

    asked by luke
  76. Math

    A smooth partition of the integer n is a set of positive integers a 1 ,a 2 ,…a k such that 1. k is a positive integer, 2. a 1 ≤a 2 ≤⋯≤a k , 3. ∑ k i=1 a i =n, and 4. a k −a 1 ≤1. Determine how many smooth partitions there are of the integer

    asked by best
  77. math

    On May 23, Samantha Best borrowed $4,000 from the Tri City Credit Union at 13% for 160 days. The credit union uses the exact interest method. What was the amount of interest on the loan?

    asked by sophia
  78. algebra

    one number is 2 times as large as the other. what are the numbers?

    asked by topaz
  79. Physics/Mechanics

    We will obtain bending moment diagrams for three beams and calculate stresses inside the beams. For each beam, take the x-axis along the neutral axis of the beam, oriented from left to right, with origin at A. HW7_1A_1 : 5.0 POINTS For the beam above,

    asked by MAN
  80. Physics

    A meteoroid is speeding through the atmosphere, traveling east at 23.1 km/s while descending at 18.3 km/s. What is its speed, in km/s?

    asked by Justin
  81. Math check and help on one part

    Two new drugs are being tested for their effect on the number of days a patient must remain hospitalized after surgery. A control group is receiving a placebo, and two treatment groups are each receiving one of two new drugs, both developed to promote

    asked by Tom 11
  82. Math

    Cashew nuts sell for $21.00/kg. Brazil nuts sell for $15.00/kg. a distributed sold at total of 120kg of cashew and Brazil nuts for 2244 dollars. What mass of each type of nut was sold?

    asked by Anonymous
  83. algebra

    Write an equation in the form y = mx + b for the line that has a slope of 1/2 and contains the point (12, 3).

    asked by lucy
  84. statistics

    What is the rejection region for a two tailed test when a=0.05? a. [z] > 2.575 b. z>2.575 c. [z] > 1.96 d. [z]>1.645

    asked by Rald
  85. Calculus

    The motion of a spring that is subject to dampening (such as a car's shock absorber)is often modeled by the product of an exponential function and a sine or cosine function. Suppose the equation of motion for a point on such a spring is

    asked by Robin
  86. maths

    Γ 1 is a circle with center O 1 and radius R 1 , Γ 2 is a circle with center O 2 and radius R 2 , and R 2

    asked by best
  87. math check

    Consider the following table and use the formulas that are given for computing the correlation coefficient. (Give your answer correct to two decimal places.) x 1 1 0 0 0 y 7 3 5 6 6 r = n xy − x y n x2 − x 2 n y2 − y 2 (1) r = SS(xy) SS(x) · SS(y)

    asked by Tom 12
  88. Algebra

    How would I simplify (1/2sqrtx^(-1/2))/(sqrt2x+9?

    asked by Emmy
  89. math

    Solve the equation and check your solution 2/5+1/y-5=y-7/5y-25.

    asked by glen
  90. math

    Jenny places 100 pennies on a table, with 30 showing heads and 70 showing tails. She chooses 40 distinct pennies uniformly at random and turns them over. That is, if a chosen penny was showing heads, she turns it to show tails; if a chosen penny was

    asked by anonymous
  91. Chemistry

    How many grams of NaCl are produced from 6 moles of Na?

    asked by Halie
  92. Mahlangu

    Identify one environmental or human factor that causes ill health,accidents,crises and disasters within your community or any other community within South Africa.

    asked by Lydia
  93. math

    What is the √(5² - 3²) ? √(25-9) √16 = 4 or (√5²-3²)½ 5-3 = 2

    asked by cici
  94. Statistics

    Suppose that a sample of size 60 is drawn from a population with mean 73 and standard deviation 79. Find the value of , the standard deviation of the distribution of sample means. How do I work this on my calculator?

    asked by Anonymous
  95. math

    Find the sum of all primes p, such that p divides up, where up is the p- th Fibonacci number. please tell me the answer it's urgent about this..///

    asked by jack
  96. Calculus

    Find the absolute maximum value and the absolute minimum value, if any, of the function. (If an answer does not exist, enter DNE.) f(x) = −x2 + 2x + 3 on [3, 6] maximum minimum

    asked by Anonymous
  97. math

    A number rounds off to 4000.The digits in the hundreds place is twice the digits in the tens place.The sum of the digits is 12.The number uses only two diffirent digits.find the number.

    asked by shirley nicole silva
  98. physics

    In a synchrotron, electrons are accelerated to speeds close to the speed of light v≈c≈3×108 m/s Suppose that in a synchrotron, 100 billion (1011) electrons move in a circular orbit of circumference L=300 m . Determine the electric current in Amps due

    asked by jack
  99. make check

    Consider the following. (Give your answers correct to four decimal places.) (a) Determine the level of confidence given the confidence coefficient z(á/2) for z(á/2) = 1.65. Incorrect: Your answer is incorrect. . 0.90 is what I got and it was wrong, I

    asked by Tom 84
  100. maths

    The position vector of the point A(3,4) relative to an origin O is a. (a) Express vector a or (OA) in terms of i and j. (b) Find the magnitude of a. (c) Find the unit vector in the direction of a.

    asked by Shane
  101. Ashford university

    She must either steal and feed her children or not steal and let them go hungry. Provide your reasons that justify either one of these positions. Citique the arguments offered by your classmates.

    asked by modanna
  102. Finance


    asked by Terry
  103. Finance

    How much would the payoff be if I only had 12 years left on a 30 year mortgage of $530,493 with monthly payments o $3,180.57

    asked by Sherri
  104. Physics

    A thin massless horizontal pipe rotates about a vertical axis with angular speed ω as shown in the figure. A small bug, located at a distance r from the axis, starts crawling inside the pipe at constant speed v (relative to the pipe). Because of the bug,

    asked by Jon
  105. Introduction to human services

    What have been the most significant changes in human services over the past 50 years

    asked by sally
  106. Math

    Maximize P=3x+2y subject to 6x+3y

    asked by Sandra
  107. Math check

    Two new drugs are being tested for their effect on the number of days a patient must remain hospitalized after surgery. A control group is receiving a placebo, and two treatment groups are each receiving one of two new drugs, both developed to promote

    asked by Tom 11
  108. modules

    What are some of the safety considerations when installing or maintaining PLCs? What is a proper grounding?

    asked by adam
  109. physics

    please give me some idea for making a working model based on optics. Like combination of light and lenses, spectrum etc......& how can i make a working model with the use of contact lenses....

    asked by edward
  110. general knowledge

    name a fuzzy fruit that grows by the seashore

    asked by hussain
  111. maths

    Find two geometric progressions having: 54 as third term and 27/32 as ninth term.

    asked by Shane
  112. grade 10 math

    on a line the distance between 2x and 7x plus 80 is 142. Solve for x

    asked by kim
  113. maths

    the radius of a wheel is 3 cm. what is the distance travelled by it in 15 revolution?

    asked by beena
  114. Calculus

    Find the 3rd order for the taylor polynomial in powers of x for the function f(x)=sinh2x and find the remainder as a function of x and c. P3(x)=? R3(x)=? What's the kth term expression?

    asked by John Lewis
  115. Math

    Construct a number out of the several other numbers by using BODMAS. e.g Make 5 using 1,2 and 3. Answer is (3 + 2) * 1. Question. Make 17 using 1,2,6 and 7

    asked by olafam
  116. Algebra 2..

    Automobile Urchasing Preference (Data): *Male American- 58 European- 112 Asian- 46 Total: 216 *Female American- 27 European- 76 Asian-133 Total: 236 Determine: The probability that the person taking the survey was male given that he preferred a European

    asked by Anonymous
  117. Econ 112

    A researcher believes that the average size of farms in the U.S. has increased from the 2002 mean of 471 acres. She took a sample of 23 farms in 2011 to test her belief and found a sample mean of 498.8 acres and a sample standard deviation of 46.9 acres.

    asked by Help
  118. Calculus

    Find the equation of the tangent line to the curve y=2tan(x) at the point (pi/4,2).

    asked by Robin
  119. Statistics

    There is a random selection of 150 students. What is the probablity that the sample percentage of correct identification is greater than 75%?

    asked by Katie
  120. Physics

    Optical fibers are devices used for guiding light in many applications, most notably for fast communication. A fiber consists of a glass cylinder surrounded by a wall covered in a special coating. The fibers work on a principle called total internal

    asked by Bob
  121. math

    S=1+2(1/5)+3(1/5)^2+4(1/5)^3…. If S=a/b, where a and b are co prime positive integers, what is the value of a+b?

    asked by jack
  122. Math

    Can someone please double check my answers (My answers are in Capital) 1. If you produce a million products a day and you want to test ten of them to determine if they are up to standard, which ones will you choose? a. The second ten B. TEN RANDOM UNITS c.

    asked by mysterychicken
  123. math


    asked by hussain

    What are the three most significant concepts you have learned in this course that you would include in a speech supporting incorporation of health psychology concepts into health care policy? Please explain why you would incorporate (why are they

    asked by ty
  125. physics

    If I have 1.5 moles of an ideal gas at a pressure of 3 atmospheres and a volume of 7 liters, what is the temperature?

    asked by g
  126. math

    Let α and β be the roots of 3x2+4x+9=0. Then (1+α)(1+β) can be expressed in the form ab, where a and b are coprime positive integers. Find a+b.

    asked by jack
  127. math

    A 999-digit number starts with 9. Every 2 consecutive digits is divisible by 17 or 23. There are 2 possibilities for the last 3 digits. What is the sum of these 2 possibilities?

    asked by jack
  128. Math Algebra II

    I am confuse how to solve a relation function such as f(x) = 1x -12. show me example on how resolve this problem

    asked by Xavier
  129. give answers

    when will u give the answers?

    asked by hussain
  130. urgent...maths

    Find the sum of all primes p, such that p divides u(p), where u(p) is the p-th Fibonacci number. this iss very urgentt...

    asked by jack
  131. Calculus

    Find the outside and inside functions of the following to find their derivatives: 1) sqrt(2x+9) 2) cos(cos(x)) 3) tan(x) I already know how to find their derivatives I'm just not exactly sure what parts of the chain rule equation would be considered the

    asked by Robin
  132. maths

    what's the value of A if cot^A(1 - 3 sec A + 2 sec^2 A)=1 and A>90 degrees.

    asked by jack
  133. social studies

    what is the name of a rock that is not as warm as rocks

    asked by hussain
  134. Maths

    Find the total amount required to pay off a loan of 16000 plus interest at the end of 8 years if the interest is compounded half-yearly and the rate is 14% p.a.

    asked by Shane
  135. computer science

    Describe computer laguages according to its generation.

    asked by abhigyan
  136. math check

    Assume that z is the test statistic. (Give your answers correct to two decimal places.) (d) Calculate the value of z for Ho: ì = 81, ó = 13.3, n = 51, x = 79.7. -1.16 is my answer and it is wrong, can someone tell me how I missed this one, done several

    asked by Tom 84
  137. science

    I want to creat a easy-to-use formula to measure the conversion on a C2H6 cracking furnace

    asked by Swannie
  138. Calculus

    An arithmetic progression has terms a8 =23 and a20 =83 . What is the value of the term a12

    asked by Tony
  139. Calculus

    For what values of x with 0¡Üx¡Ü2¦Ð does the graph of f(x)=x+4sin(x) have a horizontal tangent?

    asked by Robin
  140. Math

    γ is a permutation on eight elements, though you are not told which permutation it is. If γ is applied to an 8-element set, what is the minimum number of additional times we must apply γ to the resulting set in order to guarantee the set is back in its

    asked by best
  141. english

    Elizabeth, could you help me read the map? My father's garden takes a lot of his time. "I would like to visit Mexico," said Robin. Loretta tried out for the school choir, and the director accepted her.

    asked by Pam
  142. Math

    γ is a permutation on eight elements, though you are not told which permutation it is. If γ is applied to an 8-element set, what is the minimum number of additional times we must apply γ to the resulting set in order to guarantee the set is back in its

    asked by Dan
  143. math

    If z=−√2/2+√2/2 i, what is the value of −(z^−52)? i is the imaginary unit where i^2=-1

    asked by jack
  144. maths (geometry)

    decide whether the statement is true or false, A line has length and breadth

    asked by osa
  145. BEST

    how do i calculate the point on the curve when the ordinate changes 8 times faster than abscissa in the equation 6y=x^3+2

    asked by GK
  146. general knowledge

    what is the opening in the bottom of a soup dish?

    asked by hussain
  147. maths simultaneous equations

    3x + 5y = 1 4x + 7y = 2

    asked by ben
  148. Math

    What would be the present value of $365 a year for 20 years at a 14 % discount rate.

    asked by Terry
  149. Math

    Find the largest possible degree n≤1000 of a polynomial p(x) such that: p(i)=i for every integer i with 1≤i≤n p(−1)=1671 p(0) is an integer (not necessarily 0).

    asked by Mike
  150. English

    That building, now owned by Mrs. Bly, was once an old school. Have you read the story of Joe Louis's life? Leslie's father, Mr. Lorenzo, owns a bicycle shop downtown. Johanna, my sister, loves all forms of art.

    asked by Lynn
  151. Calc

    Find the kth term for f(x)= 3/(1+x)

    asked by Sam Cole
  152. arithmetic

    there is a unique number of which the square and the cube together use all numbers from 0 up to 9 exactly once. which number is this ?

    asked by Akansha
  153. maths


    asked by hussain
  154. math

    How many positive integers less than 1000000 have the sum of their digits equal to 7?

    asked by anonymous
  155. Math

    γ is a permutation on eight elements, though you are not told which permutation it is. If γ is applied to an 8-element set, what is the minimum number of additional timeswe must apply γ to the resulting set in order to guarantee the set is back in its

    asked by Bob
  156. maths

    A vendor bought 150 breadfruits at $2 each 20 of the breadfruits were bruised and could not be sold.She sold 30 of the remainder at $2 each and the rest at $1.80 each.Find whether he made a profit or loss and the amount.

    asked by yannica
  157. math


    asked by glen
  158. maths


    asked by hussain
  159. maths

    radius=7cm what is the area

    asked by hussain
  160. general knowledge

    what is intelligent skeleton?

    asked by hussain
  161. Math check

    A sample of 30 of 178 funded projects revealed that 12 were valued at $17,360 each and 18 were valued at $20,280 each. From the sample data, estimate the total value of the funding for all the projects. (Enter your answers to two decimal places.) $ 35.60

    asked by Tom 84
  162. math

    what is the net weight of 36 items that weigh 36 grams each in pounds or ounces

    asked by patricia
  163. math

    a.12 is 80% of what number? b.4/6 is 1/9 of what number? c.52 is 13% of what number?

    asked by Celest