1. Math

    Explain what each of the following expressions means. Evaluate each expression for x = 0.5. Some of these may be asking for inverse and not raising to exponent of -1. Enter the exact value for angles, and round any values to three decimal places. sin^-1 x

    asked by Randolph on November 7, 2014
  2. physics

    Three point charges lie along a circle of radius r at angles of 30°, 150°, and 270° as shown in the figure below. Find a symbolic expression for the resultant electric field at the center of the circle.

    asked by Mina on March 19, 2011
  3. statistics

    Assume that about 45% of all U.S. adults try to pad their insurance claims. Suppose that you are the director of an insurance adjustment office. Your office has just received 110 insurance claims to be processed in the next few days. What is the

    asked by Randy on September 26, 2010
  4. college math

    Find the distance of the shotcut and the distance of the long way for two locations. find the number of seconds saved ( 2.1 and 5.8) Approximate the are of the affected region (24 and 248 Sq Ft). find the average amount of oxgen saved per second saved

    asked by JC on March 1, 2011
  5. Science

    Relative abundance of weight? If a hawk eats a fish and does not acquire all the energy in the fish's body because of the second law of thermodynamics then what implications would have a relative abundance by weight of predators and their prey? I

    asked by Rindi on August 9, 2007
  6. Chemistry

    A gas occupies a volume of 140 mL at 35.0 C and 97 kPa. What is the volume of the gas at STP? N = ( P )( V ) / ( R ) ( T ) N = ( 97.00 ) ( 140 /1000 ) / ( 8.314 ) ( 308.15 ) = 0.005300 gmol V sub STP = ( N ) ( R ) ( T sub STP ) / ( P sub STP ) V sub STP =

    asked by Angela on June 5, 2014
  7. Precalculus 11

    It takes an express train 1hr longer to travel 240km than it does for a small plane to travel the same distance. If the plane travels twice as fast as the train, how fast does the plane travel? This is an ex., they lay out online but I'm confused about how

    asked by Kayla on August 12, 2017
  8. Mathematics Help

    Giving a test to a group of students, the grades and genders are summarized below. A B C Total Male 3 15 11 29 Female 14 9 12 35 Total 17 24 23 64 If one student is chosen at random, find the probability that the student was female OR received a grade of

    asked by Anonymous on October 9, 2016
  9. accounting

    Hi! I can't figure out this question...any help is greatly appreciated! In a common size financial statement, which of the following is given a percentage of 100 percent? a. total liabilities b. total assets c. net income d. cost of goods sold I was

    asked by Jen on November 26, 2007
  10. statistical reasoning

    One hundred people are selected at random and tested for colorblindness to determine whether gender and colorblindness are independent. The following counts were observed. Colorblind Not Colorblind Total Male 7 53 60 Female 1 39 40 Total 8 92 100 State the

    asked by Anonymous on April 14, 2017
  11. math

    At Sunnyside Place, as of March 31, a total of 12 residents have moved out. What is your property’s annualized turnover percentage rate? Note: this is connected to the first Sunnyside Place apartment question, which total apartments are 100 Again, thank

    asked by esther on January 1, 2017
  12. physics

    A hose contains 20 lamps of 200 W for each lamp and a heater of power 1500 W. they are all connected to supply voltage of 240 volt. Calculate; (a) The total current when all loads operates at the same time. (b) Total energy when 10 lamps and the heater

    asked by fady on May 16, 2017
  13. calculus

    three forces with magnitudes 100, 50, and 80 lb act on an object at angles of 50 degree, 160 degree, and -20 degree respectively. ind the direction and magnitude o the resultant force.

    asked by sarah on January 9, 2013
  14. Math

    Given that Angle TUN and Angle PUN are complementary angles and Abgle OUR = 4

    asked by Anna on August 23, 2017
  15. Physics

    Hello, my problem is the next one: There are three objects that are launched at the Same time But with different angles( they describe proyectile motion ) . All the objects got the Same maximun height. My question is: Is the Initial velocity the Same for

    asked by Arthur on October 11, 2016
  16. maths

    A man has certain number of oranges.he divides them into two lotsA and B.he sells the first lot at the rate of Rs.2 for three oranges and the second lot at the rate of Re.1 per orange and gets a total of Rs.400.if he had sold the first lot at the rate of

    asked by lolita on June 6, 2016
  17. physics

    Water flows through a horizontal tube of diameter 2.7 cm that is joined to a second horizontal tube of diameter 1.9 cm. The pressure difference between the tubes is 7.6 kPa. Find the speed of flow in the first tube. v_1 = ? m/s I've tried using P_1 + .5 *

    asked by Trent on December 8, 2011
  18. Physics

    An electric catfish can generate a significant potential difference using stacks of special cells called electrocytes. Each electrocyte develops a potential difference of 110 mV. How many cells must be connected in series to give the 350V a large catfish

    asked by Anthony on February 17, 2010
  19. math

    a rectangular parking lot is 110 yards long and 45 yard wide it costs about $.60 to pave each square foot of the parking lot with asphalt.about how much will it cost to pave the parking lot?

    asked by parveen on October 22, 2008
  20. Physics

    I would say it is true that the center of mass of an isolated system moves at a constant velocity, as long as there is a constant force applied to it. Am I correct?

    asked by David on December 16, 2011
  21. physics

    Forces of 86 N east, 23 N north, 46 N south, 55 N west are simultaneously applied to a box of mass 13.8 kg. Find the magnitude of the box's acceleration?

    asked by Christina on June 18, 2012
  22. physics

    With brakes fully applied, a 1340 kg car deccelerates from a speed of 96.0 km/hr. What is the work done by the braking force in bringing the car to a stop?

    asked by anonymus on August 31, 2018
  23. Dahal

    A train is moving with a velocity of 20 m/s . when the brakes are applied , the acceleration is reduce to -0.5m/s2 . calculate the distance covered by the train before coming to rest.

    asked by Nikat on June 27, 2016
  24. Physics

    A stone of mass 50g is accelerated from a catapult to a speed of 8.0 ms-1 from rest over a distance of 30 cm. What average force is applied by the rubber of the catapult ?

    asked by Manar on January 17, 2017
  25. PHYSICS

    a mass of 2.00kg is pushed up a 50 degree incline. if muse of k is 0.400 and a force of 50.0 N is applied parallel to the plane, what is the acceleration of the mass?

    asked by EMMA on July 11, 2014
  26. Physics

    an upward force of 45.0N is applied to catch a falling girl's bowling ball with a mass of 5.45kg(12lb). What is the acceleration of the ball

    asked by Li Jun Heum on November 23, 2016
  27. physics

    1)How can the CG of an irregularly shaped object be determined? 2) What is the lever arm of a force? 3) In what direction should a force be applied to produce maximum torque?

    asked by anonymous on July 10, 2010
  28. Physics

    A simple machine with an efficiency of 75% lift of a load of 5000N.When a force of 500N is applied to it,Calculate the velocity ratio of the machine.

    asked by Angela on January 20, 2016
  29. physics

    A catapult used to hold a stone of mass 500grammes is extended by 2cm with an applied force F. if the stone leaves with a velocity 40ms-1, the value of F is.

    asked by emmanuel on January 19, 2017
  30. Applied physics

    a string is wrapped around a cylinder with radius of 20cm. If the force of 300N is applied to the string, what is the magnitude of the torque that is developed about the axis?

    asked by jose souljoe on March 31, 2012
  31. physics

    A 500g ball moving at 72 km/h is stopped by a player in 2 sec calculate a) initial and final momentum b) force applied by the player

    asked by natasha on August 15, 2016
  32. Physics - Stopping distance

    Consider two bodies, A and B, moving in the same direction with the same kinetic energy. A has a mass twice that of B. If the same retarding force is applied to each, how will the stopping distances of the bodies compare?

    asked by Anonymous on October 20, 2010
  33. physics

    a constant rrtarding force of50N is applied to a body of mass 20 kg moving initially with speed of 15 ms-1.How long does the body take to stop?

    asked by Anonymous on August 28, 2014
  34. Calculus

    Which of the following statements is/are true? I.If f '(c) = 0, then f has a local maximum or minimum at x = c. II.If f is continuous on [a, b] and differentiable on (a, b) and f '(x) = 0 on (a, b), then f is constant on [a, b]. III.The Mean Value Theorem

    asked by Tom on May 21, 2015
  35. physics

    a train is moving at 30m/s when the brakes are applied the retardation is 2m/s (square). Find the velocity after 10sec and the time taken for train to come to rest

    asked by abiee on October 23, 2015
  36. physics

    A catapult used to hold a stone of mass 500g is extended by 20cm with an applied force F.If the stone leaves with a velocity of 40ms-1,the value of F is

    asked by Godslight on February 21, 2012
  37. Physics

    A cyclist enters a curve of 30m radius at a speed of 12m/s.As the brakes are applied. Speed is decreased at a constant rate of 0.5m/s

    asked by Ayesha on November 9, 2017
  38. Physics

    An automobile traveling 50km/hr. It decelerates at 5 meter per second square. How long will it take to stop the car? How far will the car travel after a brakes are applied?

    asked by Grace on January 11, 2016
  39. science

    you and your brother are pushing a car with a dead battery. You exert forces of 20n and 25n in the same direction. What is the force applied on the car?

    asked by kirrah on September 18, 2014
  40. Phiysics

    An automobile traveling 50km/hr. It decelerates at 5 meter per second square. How long will it take to stop the car? How far will the car travel after a brakes applied?

    asked by Grace on January 11, 2016
  41. physics

    A .5 m long, 3 cm diameter metal bar has a Young’s Modulus of 7.0x1010 N/m2. If a 50,000 N force is applied to the end of the bar, by how much will it compress?

    asked by Kate on July 5, 2011
  42. Physics

    (a) Find the capacitance of a parallel-plate capacitor made of two 5 cm×5 cm square plates separated by 1 mm. (b) If 50 V is applied to this capacitor, how much energy is stored?

    asked by Amanda on September 4, 2012
  43. physics

    With brakes fully applied, a 1370 kg car deccelerates from a speed of 98.0 km/hr. What is the work done by the braking force in bringing the car to a stop?

    asked by charles on July 11, 2014
  44. Math

    The perimeter of a rectangle is 110 inches. The length exceeds the width by 41 inches. Find the length and the width. I can't seem to figure out this last question. Don;t know where to start. Please help it is my last question.

    asked by Flossie on August 29, 2010
  45. Math

    The area of a rectangular garden is 110 square meters. The width is 6 meters loner than one-half of the length. Find the length and the width using area=lengthxwidth

    asked by Amber on April 30, 2013
  46. math

    Lareina understands factors, but sometimes she has trouble finding all the factors of a number. What advice would you give to help her find all the factors of a number? Demonstrate by finding all the factors of 110. I NEED HELPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!

    asked by Gabby ( 5 grade) on January 31, 2012
  47. microeconomics

    This week you have gone to two parties. Assume the total utility you gained from these parties is 100utils. Then you go to a third party, and your total utility rises to 110utils. What is the marginal utility of the third party attended per week? Given the

    asked by snizhanna on March 11, 2012
  48. Science

    give 3 examples of pure science vs applied science

    asked by Matt on June 7, 2009
  49. Math

    Casandra Jones has a job offer in which she will receive $600 per month plus a commission of 2.5% of the total price of the cars she sells. At her current job, she receives $1000 per month plus a commission of 1.7% of her total sales. What is the total

    asked by Maple Tree on March 30, 2016
  50. physics

    A ball attached to the end of a string is whirled on a horizontal circle at constant speed. Consider the linear momentum, total energy, and kinetic energy of the ball throughout its motion. Which of the following statements is true? Both linear momentum

    asked by hilary on January 7, 2010
  51. maths

    There were 335 children in a hall. 1/4 of the girls and 2/5 of the boys are swimmers. There are 110 swimmers in all. How many boys are there in the hall?

    asked by mathsmad on September 10, 2011
  52. Business English

    I need help writing this: You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph

    asked by Kelley on December 12, 2013
  53. Algebra 1

    Samantha Jones has a job offer in which she will receive #600 per month plus a commission of 2% of the total price of the cars she sells. At her current job, she receives $1000 per month plus a commission of 1.5% of her total sales. a. What is the total

    asked by Annon. on January 13, 2012
  54. Physics

    A liftascends with constant acceleration a, then with constant velocity and finally stops under a constant retardation a. If the total distance ascended is s, and the total time occupied is t,show that the time during which the lift is ascending is given

    asked by Amah on January 5, 2016
  55. math

    there are essay competion will be held and winner will get rupees 100and who don't win will get rupees 25.there are total prize money is rupees 3000.and total participant is 63.find the number of winner.

    asked by narinder kumar on April 25, 2016
  56. LAccounting

    If total assets decreased by $47,000 during a period of time and stockholders' equity increased by $24,000 during the same period, then the amount and direction (increase or decrease) of the period's change in total liabilities is

    asked by Anonymous on July 28, 2010
  57. accounting

    If total liabilities decreased by $25,000 during a period of time and owner's equity increased by $30,000 during the same period, the amount and direction (increase or decrease) of the period's change in total assets is

    asked by Tina on May 21, 2008
  58. Fifth Grade Math

    How do you explain how to do this math problem to a child? 7/10 of the U.S. population (175,104,000)in 1991 believed saying A to be true. What is the total population? We are trying to find what the whole population total is. They have given us 7/10 or

    asked by Tiffany T on December 14, 2009
  59. math

    Mr. smith wants to buy some fencing to completely surround his rectangular garden. He knows that the total perimeter of the garden is 26 meters and the total area is 40 square meters. What is the garden’s length and width?

    asked by Anonymous on November 11, 2012
  60. Clinical Chemistry

    This one seems like an easy question but I don't know where to start. Please help! In serum, about 55% of total serum calcium is bound. The measurement of ionized (free) calcium with an ISE is 1.10 mM. What is an estimate of the total calcium in this

    asked by Cosette on April 10, 2013
  61. Algebra 2

    If 550 m of fencing is available to build five adjacent pens, as shown in the diagram on the left, express the total area A of the pens as a function of x. What value of x will minimize the total area? What is the maximum area?

    asked by Eenra on April 16, 2016
  62. Algebra

    The pressure of a gas varies jointly as the amount of the gas (measured in moles) and the temperature and inversely as the volume of the gas. If the pressure is 975 kPa(kiloPascals) when the number of moles is 4, the temperature is 250 K, and the volume is

    asked by Nicole on December 5, 2012
  63. Statistics

    The figures below represent the prices (in dollars) for both paper shredders and calculators. At the 0.10 level of significance, can it be concluded that the variance in price differs between the two types of machines? Paper shredders | Calculators

    asked by Anon on November 11, 2010
  64. Algebra

    An electronics store is deciding how to price one of its products. The equation P = -25d^2 + 500d predicts the total profit P as a function of the product's price in dollars d. What price will produce the highest total profit?

    asked by Anonymous on May 22, 2014
  65. accounting

    If total liabilities decreased by $25,000 during a period of time and owner's equity increased by $30,000 during the same period, the amount and direction (increase or decrease) of the period's change in total assets is ________

    asked by lilo on October 3, 2009
  66. Physics

    Ok, I have few questions which I solved but the answers in he book do not match with the ones that I got. Q1. The de-Brogile wavelength of a neutron at 927 degree C is {lambda}. What will be its wavelength at 27 degree C? I got 2 {lambda}, book says

    asked by new user on October 20, 2016
  67. engineering

    Problem 1: A long embankment is located on a soil profile consisting of 4m of medium clay followed by 8m of medium to dense sand on top of bedrock. A vertical settlement of 5mm at the center of the embankment was measured during construction. Assuming all

    asked by Can someone help me please? on November 6, 2011
  68. chemistry

    I have a chart and I have to draw the structure,name the shape snd lable the bond angle of some compounds. I've done most of them but im stuck on a few so heres what I need.Please and thank you structure of NF3 structure,shape and bond angle of TeCl2 bond

    asked by mike on May 16, 2007
  69. Math

    Two angles are supplementary. The measure of one is 30 more than twice the measure of the other. Find the measure of the larger angle.......... Please help ! I need this answer!

    asked by Vali on April 14, 2016
  70. Geometry

    A right triangle with G and F as the two base angles and E as the top angle. Side EF is Y, side FG is x, while side EG is 2x. If Y = 15, what is the value of x? ----Please help, and explain.

    asked by monique on March 25, 2012
  71. math

    two complementary angles are drawn such that one angle is 10° more than seven times the other angle find the measur of each angle

    asked by abebe on January 8, 2015
  72. math

    The measure of one angle is 15 degrees more than half the measure of its complement. Find the measure of the two angles.

    asked by lea on March 14, 2012
  73. geometry

    Given mÐ 1 + mÐ2=90, what can we conclude? Well, if the angles are in a triangle, the other angle is 90 degrees, which makes the triangle a right triangle.

    asked by tina on June 28, 2007
  74. Business calculus

    The RideEm bicycles factory can produce 100 bicycles in a day at a total cost of $10,100, and it can produce 120 bicycles in a day at a total cost of $10,700. A)Find a linear function that models the total cost for RideEm to produce x bicycles B) what are

    asked by Monica on February 3, 2018
  75. Biology

    GENETICS PRACTICE PROBLEMS Worth 10 points each problem is either right or wrong 1. In humans, assume that brown eyes (B) are dominant over blue eyes (b). A blue eyed man, both of whose parents were brown eyed, marries a brown eyed woman whose father was

    asked by Vicky on April 17, 2012
  76. math

    a band held a concert in it's hometown a total of 15000 people attended the tickets cost 8.50 per student and 12.50 per adult the concert took in a total of $162500 how many adult came to the concert

    asked by ty on November 8, 2012
  77. Physics

    A car moves with 60km/h in first one hour and with 80km/h in next half an hour. Find 1. Total distance travelled by the car. 2. average speed of car in total 1.5 hours.

    asked by Sakshi on September 7, 2016
  78. Physics

    A toy train leaves a station at time t=0.0 and moves with constant acceleration. If the total mass of the train is 5.5 kg and its acceleration is 9.9 m/s2. What is the total work done on the train after 1.1 s? Express your answer in kJ.

    asked by Juicy on October 27, 2015
  79. Math Help

    You deposit $300 each month into an account earning 8% interest compounded monthly. a) How much will you have in the account in 35 years? b) How much total money will you put into the account? c) How much total interest will you earn?

    asked by jimi on December 14, 2016
  80. Finite Math

    You deposit $300 each month into an account earning 8% interest compounded monthly. a) How much will you have in the account in 35 years? b) How much total money will you put into the account? c) How much total interest will you earn?

    asked by Anonymous on December 14, 2016
  81. maths

    In a netball competition, there are 9 teams. If each team plays each other twice, what is the total number of games played? The first round would be 9choose2 games, which is 9!/(7!2!) = 36 But you are playing two rounds, so the total number of games is 72

    asked by JaredN4 on August 13, 2007
  82. Calculus

    The marginal cost of a certain commodity is C'(x)= 3x^2 -36x + 120 If it costs 5 dollars to produce 1 unit, then find the total cost of producing x units is... Please how do I find the total cost?

    asked by Anonymous on December 13, 2011
  83. Algebra

    Micheal loaned two of his roommates a total of $4,000. He charged his first roommate 3% interest and his second roommate 4% interest. After six months he collected a total of $332 in interest. How much did he loan each friend?

    asked by Julissa on November 22, 2008
  84. Social Studies

    The passage implies that Plessey vs. Ferguson. 1. called for intergration. 2. stated that separtated facilities wer unequal. 3. was based on out bounded psychology. 4. was constitutional 5. applied only to private schools.

    asked by Arlena1998 on October 3, 2010
  85. Psychology

    • Write a 200- to 300-word response to the following: Identify and explain the scientific process (unsystematic observation, building theories, and evaluating propositions) as applied to personality psychology.

    asked by Stacy on June 29, 2011
  86. physics

    what equation would i use if i wanted to find the magnitude for this problem A box of mass 32.0 kg is subject to an applied force (FA) with an elevation angle of 39.9°, and it accelerates to the right at 6.31 m/s2. The horizontal surface has a coefficient

    asked by Jessica on December 5, 2010
  87. stats

    Suppose x has a normal distribution with sigma = 1.2. Find the minimal sample size required so that for a 95% confidence interval, the maximal margin of error E = 0.5.

    asked by Anonymous on March 6, 2016
  88. Health/ Basic Clinical Procedures

    please check my anser thanks An infant's respiratory rate is 45 beats per minute, which is considered A normal B abnormal C a breath sound D irregular I picked B

    asked by Helana on April 22, 2008
  89. MATH

    Can anyone help me with this question.? What term is being described? Choose from these answers: (A)Central Limit Theorem (B)Normal distribution (C)Standard Error (D)Z-score (E)Transformation rules

    asked by Anonymous on April 24, 2015
  90. Statistics

    Assume x is normally distributed with mean µ= 15 and standard deviation α= 3-. Use the approximate areas beneath the normal curve, as discussed in this section, to answer the following questions. Find P (X ≥15)- A) 0.50 B) 0.16 C) 0.34 D) 0.84

    asked by Stuart on February 22, 2009
  91. statistics

    sample size needed with a mean of 100,standard deviation of 20 for the the population of normal adults an iq range to fall between 2 iq points with 95% confidence interval

    asked by krissy on December 1, 2012
  92. economics (game theory)

    Consider the normal tick tack toe game, but this time you have to AVOID getting 3 in a row in any line. Is there any strategy you can tell me that will make sure the first mover doesnt lose. Thanks

    asked by david on November 9, 2010
  93. chemistry

    What am I doing wrong? Estimate the normal boiling point of liquid mercury Hg(l) Hg(g) Hf 0.0 61.4 S 75.9 174.97 DH = 61.4 kJ DS = .09907 T = DH/DS = 619.76 - 273 = 346. 76 degrees celsius

    asked by Kalen on April 6, 2008
  94. Statistics

    The z-scores that bound the middle 35 % under the standard normal curve are z = -a and z = a. Find the value of a. Write only a positive number as your answer. Round to two decimal places (for example: 0.81).

    asked by Obi on October 13, 2015
  95. Statistics

    Random samples of size n = 90 were selected from a binomial population with p = 0.4. Use the normal distribution to approximate the following probabilities. (Round your answers to four decimal places.) (a) P(p̂ ≤ 0.49) = (b) P(0.37 ≤ p̂ ≤ 0.49) =

    asked by Tyler on November 4, 2014
  96. Physics

    An electron with a kinetic energy of 0.8 keV is fired normal to the lines of a field of magnitude 50 G. Find: a)the radius of the path b)its acceleration c)its period

    asked by Sabrina on July 12, 2016
  97. chem

    The normal boiling point of Ta is 5425°C. What is its vapor pressure in mm Hg at 4384°C, if its heat of vaporization is 781.0 kJ/mol? Do I use the Clausius-clapeyron equation?

    asked by anonymous on May 11, 2014
  98. P.E. ASAP PLZ

    Which of the following are signs of drug abuse? (Select all that apply) Joining a club Denial of any problems Gaining weight *** Withdrawal from normal activities *** Thanks:)

    asked by Anonymous on May 29, 2015
  99. Biology

    A 50 year old male who is not overweight and has normal blood cholesterol levels suffers a heart attack. Propose a possible explanation i think the answer would be genetics...

    asked by Sam on October 1, 2014
  100. distribution

    In a school, the IQ scores of the students have a normal distribution with a mean value of 100, and a standard deviation of 10. What is the probability that the IQ score of a randomly selected student is at least 120? (10 p)

    asked by ABDULA YUSUF on April 16, 2016