Questions Asked on
February 15, 2015

  1. calc

    lim x → ∞ tan−1(x7 − x9)

    asked by kirsten
  2. math

    Given that log4 = 0.6021 and log6 = 0.7782, without using mathematical tables or calculate, evaluate log0.096.

    asked by kudu
  3. Physics Circular Motion

    A 0.75-kg ball is attached to a 1.0-m rope and whirled in a vertical circle. The rope will break when the tension exceeds 450 N. What is the maximum speed the ball can have at the bottom of the circle without breaking the rope?

    asked by Jayesh
  4. mathematics

    solve this probability :a box contains 10 marble, seven of which are black and three are red.three marbles are drawn,one after the other without replacement. find the probability of choosing 1 red,1 black and 1 red marble. in that order

    asked by fadil
  5. life orientation

    Show the link between intrapersonal conflict and initiating relationship

    asked by lovedalia
  6. physics

    Calculate the extension that would be produced by a 20N force if 15N extends a spring by 3cm

    asked by zynell
  7. Physics Circular Motion

    A satellite in orbit around the earth has a period of one hour. An identical satellite is placed in an orbit having a radius that is nine times larger than that of the first satellite. What is the period of the second satellite?

    asked by Jayesh
  8. statistics

    if you earned a 17 on a quiz what would your score indicate the best performance a. x=15 and s=2.4 b. x=15 and s=2.1 c. x=17 and s=2.4 d. x=17 and s=2.1

    asked by Dana
  9. chemistry

    Calculate the pH of a saturated solution of Sr(OH)2. The Ksp for Sr(OH)2 is 3.2x10^-4.

    asked by Aly
  10. Math

    A drawer contains 20 black socks and 20 white socks. If the light is off and you reach into the draw to get your socks, what is the minimum number of socks you must pull out in order to be sure that you have a matching pair?

    asked by Billy
  11. Algebra 1

    Which method is the best method for solving the equation 8x^2-123x+3=0 square roots factoring graphing quadratic formula my answer is quadratic formula

    asked by Steve
  12. Calculus

    determine the absolute extreme values of the function f(x)=sinx-cosx+6 on the interval 0

    asked by Sara
  13. Algebra

    Factor: -3x^2 - 18x + 15

    asked by Carl
  14. Chemistry

    Calculate the molar extinction coefficients for carotene and chlorophyll using the peaks of highest absorption and Beer’s law.Show your calculations.basically solve for e A = ebc Carotene (Yellow) = Highest peak 450 nm and 0.455 absorption A = ebc 0.455

    asked by John
  15. math

    The perimeter of triangle RXA is 39, PX=49 and AP=9.Find RX and RA.

    asked by jude
  16. physics

    A sprinter in a race can run 100m in 11.4 seconds. If it takes him 4.2 seconds to accelerate to top speed, what is the magnitude of his acceleration? Assume that he stays at his top speed from 4.2 seconds till the end. I do not understand which kinematics

    asked by Allie
  17. physics

    As a protest against the umpire’s calls, a baseball pitcher throws a ball straight up into the air at a speed of 20.4 m/s. In the process, he moves his hand through a distance of 1.57 m. The acceleration of gravity is 9.8 m/s 2 . If the ball has a mass

    asked by John
  18. life orientation

    identify six symptoms of intrapersonal conflict in a person.

    asked by themba Sithole
  19. Algebra 1

    How many solutions are there form 5x^2+7x-4=0? my answer is 3

    asked by Steve
  20. ma

    A point R divides a line PQ internally in the ration 3:4. Another point S, divides the line PR externally in the ration 5:2. Given that PQ = 8cm, calculate the length of RS

    asked by kudu
  21. Pre-Algebra

    A 5-foot parking meter has a 4-foot shadow from a nearby streetlight. The streetlight is 15 feet tall. How far is the streetlight from the parking meter? Don't want answer, just want formula for figuring out

    asked by Lorri
  22. Chemistry

    What is the percent by mass of NaHCO3 and KCl in the mixture.

    asked by Kc
  23. Math

    a rectangular room on a blueprints is 2 inches wide and 5 inches longif the scale of the blueprints to the actual room is 1:72,what is the width of the room?

    asked by Sam
  24. calculus

    Find limit of 2x+1-cosx/3x as x approaches 0?

    asked by sential
  25. Algebra 1

    Which kind of function best models the set of data points: -1,22 0,6 1,-10 2,-26 and 3,-42? linear quadratic exponential non e of the above my answer is linear

    asked by Steve
  26. physics

    When you lift a bowling ball with a force of 60.7 N, the ball accelerates upward with an acceleration a. If you lift with a force of 69.3 N, the ball's acceleration is 1.99a. Calculate the weight of the bowling ball.

    asked by Brad
  27. chemistry

    A student collects gas over water after reacting sodium bicarbonate with hydrochloric acid. The watwr in the collector is the same both inside and out. The partial pressure of the carbon dioxide gas collected is 740 atm.if the temperature at the time of

    asked by betito
  28. MATHS(sum of series)

    1).Find the sum of the n terms of the series Sn=1^2 + 3^2 +5^2+...+(2n-1)^2 2).Find the sum to n terms of 1/(1.2.3) + 3/(2.3.4) + 5/(3.4.5) + 7/(4.5.6) +.... 3) Sum to n terms,the series 1.3.5 + 2.4.6 + 3.5.7 +..

    asked by ben
  29. physics

    A sledge weighing 30 kg is pulled with a rope that makes 60° with the horizontal. The tension on the rope is constant and it is 37N. The sledge is moved horizontally for 13 m. There is no friction and cos(60°)=0.5 a) What is the work done by the tension

    asked by Ashly
  30. Finance

    After deciding to buy a new car, you can either lease the car or purchase it on a 3-year loan. The car costs $32,000. The lease offer is for $450/month for 36 months, with only $99 due up front. If you buy the car with a 3-year loan, the APR is 7% with

    asked by Kelsey
  31. algerbra

    how to set up this problem? your new car's gas tank holds 12 gallons of gas, and you get 45miles/gallon. you travel 35miles and run out of gas. how much gas was in your tank when you left?

    asked by cessilee
  32. math

    Joe drank 4 liters of water on Monday and 4 deciliters of water on Tuesday. How much more water did he drink on Monday than on Tuesday?

    asked by Anonymous
  33. math

    If a United States dollar is worth $1.41 in Canadian money, how much is $100 in Canadian money worth in the united state money, to the nearest cent

    asked by Anonymous
  34. Computer Science

    "write a program that asks the user to enter the price of an item and rate of discount. If discount is 9%, display the final cost of item" What message do I display if its not 9%? Algorithms btw

    asked by George
  35. Anthropology

    I am struggling with these question. I did the other seven. Someone please help me. I need some sleep. Are there universal features in human behavior that leads to conflict? Give examples. What are the formal and informal mechanisms of social control? Give

    asked by Casey
  36. Physics- Momentum

    A 170g cue ball is moving at 3.0 m/s when it strikes a 160g stationary numbered ball (object ball). After the collision the balls move off as shown. Determine the speed of the cue ball and the numbered (object) ball after the collision. The diagram

    asked by Mysty
  37. Math

    Hi, thanks for help in advance. Using the Equation: f(w) = 10/w - 0.77ln(w) – 3.2 How do i use Newton-Raphson iterative to find the required value of w correct to 3 significant figures, starting from w0 = 3. Thanks

    asked by Connor
  38. Math

    A rectangle wheat field is 10^5 m long as 10^5 m wide. What is the area?

    asked by Brittney
  39. Physics

    What is the difference in blood pressure (mm−Hg) between the top of the head and bottom of the feet of a 1.82m tall person standing vertically?

    asked by Anonymous
  40. math

    A liquid spray of mass 384 g is packed in a cylindrical container of internal radius 3.2cm. Given that the density of the liquid is 0.6g/cm3, calculate to 2 decimal places the height of liquid in the container.

    asked by kudu
  41. linear algebra

    show that the only subspaces of R1 are 0 and R1 itself. okay , so I don't know if I'm making it more complicated than it is, but R1 is just a point right? so i don't know how i would prove this?

    asked by kirsten
  42. Physics 1

    Monique has a mass of 46 kg and she is sitting on a swing that hangs 0.50 m above the ground. Pierre pulls the swing back and releases it when the seat is 1.40 m above the ground. How fast is Monique moving when the swing passes through its lowest point?

    asked by Brittany
  43. chemistry

    Two-stroke motor boat engines emit a large amount of partially burned fuel into the water. One of the more common chemicals is phenanthrene . The degradation half-life of phenanthrene is about 7.30 days in clear surface waters. If a motor boat emits 97.0 g

    asked by danny
  44. math analysis

    verify tan x/2=secx /secxcscx+cscx

    asked by sam
  45. math

    how many inches in a foot

    asked by Anonymous
  46. law

    In your opinion what do you think is more important, civil liberties or security? Do you think that one outweighs the other?

    asked by Keith
  47. law

    With the recent terrorists threats that the US has had for example the bombings at the Boston marathon, do you think the governement is going enough to protect the country from terrorism?

    asked by Keith
  48. law

    Does inspirational appeal always have to be engaged from a "top- down" approach? Can a leader develop a team where he becomes nearly "lateral" to his team at times that an inspirational appeal is employed, especially if it is genuine?

    asked by Keith
  49. Science fair project

    Please help me, i think i have nothing left to do except cry!!! My science fair class presentation is tomorrow but i am not even done, i just started!!!! My parents are upset with me, and i think i will get a F in my report card for science this term, my

    asked by Wimbika
  50. Physics

    Calculate the horizontal and vertical components of a 280 N force pulling upwards at an angle of 33 degrees to the horizontal ?

    asked by Tatum
  51. Physics

    Calculate the components parallel and perpendicular to the plane of 150N gravitational force acting on an object on a slope at 20 degrees to the horizontal ?

    asked by Tatum
  52. science

    a ball is dropped fron a building which is 50 metres high.calculate the ball's velocity just before it hits the ground.ignore air resistance

    asked by judith
  53. mathematics

    The first three term of a geometric sequence are T1;T2 and T3. If T2=T1+4 and T3=T2 +9, determine the values of T1;T2 and T3

    asked by mapule
  54. mathematics

    If 3/5/9 and 40/1/2 are the first and the last terms respectively, of a geometric sequence, determine the values of the fifth term if there are seven terms in the sequence

    asked by mapule
  55. mathematics

    The sum of the first n term of ab arithmetic series is given by Sn=5/2n^2+7/2n Determine the first term and the common different and the tenth term

    asked by mapule
  56. maths

    The top of a T.V tower casts a shadow of 35 metres long when the angle of elevation of the sun 57°40'.How high is the top of the tower?

    asked by Anonymous
  57. Math

    yesterday, molly lunch cost $9.80 and she left a $1.49 tip, today molly lunch cost $12.60 if she tips at the same rate that she did yesterday how much of a tip should molly leave

    asked by Sam
  58. maths

    An open bucket is in the form of a frustum of a cone,whose radii of bottom and top are 7 and 28cm.If the capacity of the bucket is 21560cmcube,then find the cost of metal sheet used in making the bucket at the rate of Rs. 1per10cmsq.

    asked by Anonymous
  59. Physics

    A simple pendulum has mass 1.14 kg and length 0.760 m. (a) What is the period of the pendulum near the surface of Earth? (b) If the same mass is attached to a spring, what spring constant would result in the period of motion found in part (a)?

    asked by Joanna
  60. Science fair project

    Hey, can anyone tell me what is the controlled and manipulative variable of a Non- Newtonian fluid/flow please?????????? Extra thanks to the ones who answer:):):):)

    asked by Wimbika
  61. math

    The dissipation of heat through a composite material of width w centimetres can be modelled by the function f(w) = 10/w - 0.77ln(w) – 3.2 You are required to find the width of material that will prevent any heat dissipation. - I understand f(w)= 0, but

    asked by Simon
  62. Anthropology

    How would an anthropologist from the U.S. or Europe view any culture's domestic control of women without being biased and condemning?

    asked by Casey
  63. setswana

    kwala athikele ka sese diragetseng ko palamenteng labone !@#$%^&one go tswerwe kopano

    asked by spenza
  64. To Ms.Sue Regarding S.F.P.

    Dear MS.Sue, could you please tell me what are the controlled and manipulative variables of a Non- Newtonian fluid???? Please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:):):):):):):):):):):):):):):):):):):):):)

    asked by Wimbika
  65. Math

    Using: r(t)=15+e*0.04tsin(pi*t/3) "Explain why it takes longer to reach maximum heigh of the first ride but will exceed it." Do i have to use this equation or the previous one of: s(t) = 15+6sin(Pi*t/3). to explain why? Also, to find the distance off the

    asked by Paul J
  66. math help

    The perimeter of triangle RXA is 39, PX=49 and AP=9.Find RX and RA. I think it's under triangle bisector theorem. Help me answer this guys. Thanks.

    asked by jude
  67. physics

    The tortoise and the hare agree to a race. Of course, they are racing cars, having gotten tired of racing on foot. The tortoise, having just bought a new Mercedes AMG GT, allows the hare to have a running start in his Volkswagen Rabbit. The hare starts the

    asked by Allie
  68. Physics

    Two boys,each of mass m,are standing at the back of a flatbed trolley of mass 4m.the trolley is at rest on a frictionless horizontal surface.The boys jump off simultaneously at one of end of the trolley whith a horizontal velocity of 2m's.the trolley moves

    asked by Rabelani
  69. PED 212

    What are some pros and cons in relevance within a school environment in organized sports?

    asked by Monica
  70. MATH


    asked by OUMAIMA
  71. maths(urgent answer pls)

    1).Find the sum of the n terms of the series Sn=1^2 + 3^2 +5^2+...+(2n-1)^2 2).Find the sum to n terms of 1/(1.2.3) + 3/(2.3.4) + 5/(3.4.5) + 7/(4.5.6) +.... 3) Sum to n terms,the series 1.3.5 + 2.4.6 + 3.5.7 +.

    asked by ben
  72. math

    John was the first US astronaut to orbit Earth. His 3 orbit flight took 4 hours and 55 minutes. His spacecraft took off at 7:15 am. What time was John flight complete?

    asked by bryce
  73. fundamental skills

    What must a teacher provide for an open-ended question to be successful? A. Heuristics B. Background information C. Discrepant events D. Disequilibrium my answer I think is b

    asked by Luis
  74. fundamental skills

    An 18-month-old child putting large beads in a plastic bowl and pouring them out is A. developmentally superior. B. normal and appropriate. C. developmentally inferior. D. abnormal. my answer I think is a.

    asked by Luis
  75. fundamental concepts

    Free play, eating a snack, painting, hearing a story, and so forth are related to which of the following learning concepts? A. Space B. Classification C. Size D. Time a.

    asked by Luis
  76. math

    21.Faith solves the equation 3(7x+4)=21x+4. How many solutions does she find? A. Infinitely many solutions B. 2 solutions C. 1 solution D. 0 solutions

    asked by Max
  77. life orientation the link between intrapersonal conflict and initiating relationship

    asked by cee
  78. maths

    given 1,0.5,4,o.25,7,0.125,10 assume this pattern continues consistently 1.write down the 33th term in this sequence 2.determine the sum of the first 24 terms in this sequence.give the answer to five decimal place a geometric sequence the fourth

    asked by memory
  79. math

    given geometric series is 256+p+64-32 determine the value of p?

    asked by Bianca
  80. Life orientation

    Show link between intrapersonal conflict and initiating relationship

    asked by Precious thembuluwo
  81. math

    A rally car traveled for 2 hours 40 minutes at an average speed of 120 km/h. The car consumes an average of 1 litre of fuel for every 4 kilometers. A litre of the fuel costs $ 59. Calculate the amount of money spent on fuel

    asked by kudu
  82. mathematics

    Find the sum to n terms of 1/(1.2.3) + 3/(2.3.4) + 5/(3.4.5) + 7/(4.5.6) +....

    asked by tolu
  83. fundamental skills

    When a teacher chooses learning objectives for a child, which question should be asked? A. What should Kelly learn next? B. Where's Kelly in the learning process? C. Do the plan and materials fit my lesson? D. Has Kelly learned what was taught? c.

    asked by Luis
  84. Business math

    On sept 14 Jennifer went to bank to borrow 4400 at 10.25% interest Jennifer plans to repay the loan on january 27 assume the loan is on ordinary interest a. what interest will Jennifer owe on january 27?. Interest b. what is the total amount jennifer must

    asked by Mick
  85. Physics

    You are given a vector in the xy plane that has a magnitude of 85.0 units and a y component of -40.0 units

    asked by Anonymous
  86. Physics

    A small box is held in place against a rough wall by someone pushing on it with a force directed upward at 29.8° above the horizontal. The coefficients of static and kinetic friction between the box and wall are 0.400 and 0.320, respectively. The box

    asked by Madison
  87. Physics

    A slide loving pig slides down a certain 21° slide in four times the time it would take to slide down a frictionless 21° slide. What is the coefficient of kinetic friction between the pig and the slide?

    asked by Uina
  88. math(urgent)

    Find the sum to n terms of 1/(1.2.3) + 3/(2.3.4) + 5/(3.4.5) + 7/(4.5.6) +.... Answer this Question

    asked by tolu
  89. Pre-Calculus

    If r = 1, will a sequence be convergent or divergent?

    asked by Lucina
  90. MATH


    asked by ROSE
  91. Chemistry

    Why is the gas oils fraction more viscous than the kerosene fraction

    asked by Victoria
  92. life orientation

    shows the link between intrapersonal conflict and initiating relationship.

    asked by themba Sithole
  93. stats

    7. Give and interpret the 95% confidence interval for the hours of sleep a student gets.

    asked by Anonymous
  94. multivariable calculus

    show that a=!0 , the equation p=2asin0cos0 describes the sphere centered(a,0,0) at radius|a|

    asked by robert
  95. Math

    Daniel has 21 coins. All of them are either quarters or dimes. Altogether, he has $3.45. How many of each type of coin does he have?

    asked by Student
  96. chemistry

    suppose 0.0139g of HNO3 is dissolved in 625 mL of aqueous solution. what is the pH

    asked by joseph
  97. physics

    What average force is required to stop a 920kg car in 7.7s if the car is traveling at 83km/h ?

    asked by Dre
  98. Organic Chemistry

    Gas Chromatography: The internal standard technique is used. A volatile component which does not interfere with the GC analysis (i.e. it gives a separate peak) is added to the sample which is then analyzed. For example, 10.0 mg of D was added to 50.0 mg of

    asked by Courtney
  99. algebra

    x-(9x-10)+11 = 12x + 3(-2x + 1/3) I am not sure how to do this

    asked by atnan
  100. life orientation

    The link between intrapersonal conflict and initiating relationship

    asked by pilusa phyllis
  101. algebra

    how do I do a question with fractions on both sides of the equation. example 5 over 6x-1 equals -1 over x + 1

    asked by atnan
  102. Statistics

    A linear regression of price on square footage of homes for sale found the equation price = 30275 + 144*sqft. In this equation, the slope means A. a house with no square feet will cost $30,275. B. for every 144 square feet, average price goes up $30,275.

    asked by Macy
  103. math

    Solve the inequality = 3- 2x ˂ x ¡Ü 2x + 5 and show the solution on the number line

    asked by kudu
  104. spanish

    replace the underlined objects with the correct object pronoun . be sure to use se when it is required 1/ ayer mi mama compro un lapiz para mi

    asked by ally
  105. Anthropology

    In what way would the role of the Western culture anthropologist be different from another culture's anthropologist?

    asked by MeMe
  106. healthcare

    Health care in Canada is funded by which government? I know Canadas healthcare system is funded by a provincial or territorial basis

    asked by rose
  107. math

    How do I simplify this expression -2x +11 +6x . Thank you for help

    asked by sam
  108. business managment

    creating a slide that will have a large and a number of bullet points below it. what slide format should she use? A.)comparison B.)title and content C.)title only D.)two content

    asked by Anonymous
  109. physical science

    How high is a building when an anvil takes 4 seconds to hit the ground? How long will it take a piano to hit the ground when dropped off a building 103 meters high?

    asked by laura
  110. science

    How did/does Galileo's work impact or contribute to our lives today?

    asked by popcorn
  111. Anthropology

    I am sorry about the that. Ms. Sue. In what way would the role of the Western culture anthropologist be different from another culture's anthropologist?. Emotionalist paradigms focus on the role of art to connect to our inner experience and feelings. In

    asked by MeMe
  112. physics

    When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 7.87 g of C6H6 is added to 5.69 kg of water at 21.0°C, what is the final temperature of the water?

    asked by prince
  113. Math

    3^12 divided 3x3^6

    asked by Mandy
  114. Chemistry

    how many grams of ammonium chloride are needed to raise the ammonia level 5 ppm in a 300 gallon system?

    asked by Cyndy
  115. Astronomy

    The Hubble Space Telescope orbits at an altitude of 600 km above the Earth's surface. Assuming it is in a stable circular orbit, what is its velocity? For reference, the Earth's radius is 6400 km and Earth's mass is 6 x 10^24 kg. The formula to solve for

    asked by Allison
  116. Science - 7th grade

    Can you check the following: 1. Draw a Punnett Square to show a dog breeder inbreeding to maintain a purebred line of golden retrievers. Ans: would the parental cross look like Gg x GG or GG x GG? 2. Draw a Punnett Square to show a farmer crossing a plant

    asked by Alexis
  117. Math

    6^7 x 6^11 divided 6^8 x 6^2

    asked by Mandy
  118. Physics Circular Motion

    What is the maximum speed for a car to safely negotiate a 30 banked curve of 60 m radius if there is a coefficient of static friction of 0.35?

    asked by Jayesh
  119. math

    The area of a rhombus is 60cm^2. Given that one of its diagonals is 15 cm long, calculate the perimeter of the rhombus.

    asked by kudu
  120. Physics (BioPhysics)

    You are bending your upper body forward, while your legs remain perfectly straight and their center of gravity remains over the back of your feet (see cartoon below). What is the maximum angle  you can lean forward by without tipping over? Assume that

    asked by Phillip
  121. statistics

    A teacher is interested in finding out how many hours a day a college student at Monroe Community College exercises. The teacher randomly chooses 1000 college students and asks them, “How many hours do you exercise?” Explain whether there could be any

    asked by Dana
  122. Chemistry

    Can someone please explain to me what was John Dalton's experiment that led to his atomic theory? I know it's the electrolysis of water, but I'd appreciate if someone could explain in detail.

    asked by Lucina