1. statistics

    According to a bank, the time taken by its customers to use cash dispensing machines is normally distributed with a mean of 18 seconds and a standard deviation of 3 seconds. I) What is the probability that a customer selected at random takes less than 13

    asked by victor on November 5, 2011
  2. math

    Your optimal exercise heart rate for cardiovascular benefits is calculated as follows: Subtract your age from 220 and then find 80% of the difference. the rate for a 40 year old is 144 and the rate for a 10 year old 168 Rounded to the nearest whole number,

    asked by taylor on May 4, 2014
  3. health communication

    For your communication intervention, you are trying to get young mothers in a developing country to use more nutritious complementary food for their infants. You find that their mothers-in-law make most of the decisions, so you try to convince them first

    asked by Anonymous on July 14, 2016
  4. Physics

    a bicycle chain is wrapped around a rear sprocket (r=.039m) and a frond sprocket (r=0.10m) the chain moves with a speed of 1.4 m/s around the sprockets while the bike moves at a constant velocit find the madnitude of the acceleration of a chain link that

    asked by andre on September 25, 2017
  5. Maths

    Karen took 1hour 45mins to drive from Town A to Town B. She took another 25 mins drive from Town B to Town C. After that, she drove back to Town A. The journey from Town A to Town C and then back to Town A took 3h and 3mins. Find the percentage of time she

    asked by billygoatman on February 23, 2012
  6. Statistics

    Does studying for an exam pay off? The number of hours studied, x, is compared with the exam grade received, y. x 7 7 5 5 7 y 95 90 75 85 95 (a) Complete the preliminary calculations: SS(x), SS(y), and SS(xy). Incorrect: Your answer is incorrect. . (SS(x))

    asked by Tom on May 26, 2013
  7. Firissa

    commuter air plane starts from and takes the route. first it flies into city A located 175km in direction 30¡ã north of east. next it flies 150km 20¡ã west of north cityB finally it flies 190km due west to city C . find the location C relative to

    asked by Leta on December 11, 2017
  8. physics

    A thin disk, mounted on a frictionless vertical shaft of negligible rotational inertia, is rotating at 495 revolutions per minute. An identical disk (that is not initially rotating) is dropped onto the first disk. The frictional force between the disks

    asked by uma on August 4, 2010
  9. science

    While exploring a cave, a spelunker starts at the entrance and moves the following distances. She goes 75.0 m north, 250 m east, 109 m at an angle θ = 30.0° north of east, and 156 m south. Find the resultant displacement from the cave entrance. The

    asked by john on August 23, 2016
  10. Physics 30

    A particle accelerated by a potential difference enters a velocity selector. The particle travels staright when the magnetic field is 0.400 T and the electric field is 6.30 x 10^5 V/m. Once the electric field is turned off, a sensor determines that the

    asked by Farah on May 23, 2010
  11. Physics

    A test rocket is launched by accelerating it along a 200.0-m incline at 1.25m/s2 starting from rest at point A (the figure (Figure 1) .) The incline rises at 35.0 ∘ above the horizontal, and at the instant the rocket leaves it, its engines turn off and

    asked by christina on February 1, 2014
  12. algebra2

    10 points) Score 2. Allegra has a cell-phone plan that charges $65 per month and $0.10 for every minute that she uses the phone beyond what her plan allows. One month, she was billed $73.40. a. Define a variable for the unknown. b. Write an equation to

    asked by myira smith on December 9, 2014
  13. physics

    A 1000 kg car traveling is at 40.0 m/ s. To avoid hitting a second car the driver slams on his brakes. The brakes provide a constant friction force of 8000 N. ( a) Find the minimum distance that the brakes should be applied in order to avoid a collision

    asked by bob on November 12, 2017
  14. Chemistry

    The ionization constant Ka of an indicator HIn is 1.0x10^-6. The color of the nonionized form is red and that of the ionized form is yellow. What is the color of this indicator in a solution whose pH is 4.00? (The question mentions that you can use the

    asked by Taylor on February 26, 2014
  15. English

    Thanks, Writeacher for the links I have checked Owl.enlish.purdue.edu several times, I couldn’t find the exact information I needed. My article information was title Durga Puja found at Calcuttaweb link, the links you sent were a lot of help but do I use

    asked by Lorraine on December 14, 2011
  16. american history

    The first frontier state to enter the Union was: Tennessee Vermont Ohio Kentucky Louisiana I believe it was Vermont I am stuggling between Vermont, Tennessee and Kentucky You can find that here: http://www.50states.com/statehood.htm The answer is still not

    asked by Alisa on November 15, 2006
  17. religion,help

    I have to also find the sacred text so this is what i have: for Hinduism = the vedas which are the rig veda, sama veda, yajuir veda, and atharva veda. for Confucianism= they were by the chu shi (1130-1200 CE) during the sung dynasty. which are the Si Shu

    asked by Kailin on January 13, 2007
  18. math

    Part 1: Find the area of a rectangular object which has a length of 5√8 inches and a width of 2√5 inches. (3 points) Part 2: Explain, in complete sentences, how you arrived at the simplified answer and give the final solution in simplified radical

    asked by me on January 7, 2012
  19. UDC

    Utilizing a public policy of your choice from a local government where you reside, prepare a paper assessing that government’s revenues and examining possible funding options for the chosen public policy. Utilizing the local government’s annual

    asked by Kareema on May 6, 2013
  20. physics

    7. Consider the 52.0-kg mountain climber in Figure 5.22. (a) Find the tension in the rope and the force that the mountain climber must exert with her feet on the vertical rock face to remain stationary. Assume that the force is exerted parallel to her

    asked by pari on June 11, 2015
  21. maths

    A mixture contains two chemicals, A and B, with masses mA and mB. The total mass of the mixture, m, remains constant. B is converted into A at a rate that is inversely proportional to the mass of A and directly proportional to the square of the mass of B

    asked by jessie on March 9, 2010
  22. english

    Why is the initial background research step important? a. It helps you find very detailed information about the topic to answer key questions. b. It helps you become familiar with a topic before doing deeper research. c. It helps you to determine which

    asked by catie on March 10, 2017
  23. Physics

    A test rocket is launched by accelerating it along a 200.0-m incline at 1.25m/s2 starting from rest at point A (the figure (Figure 1) .) The incline rises at 35.0 ∘ above the horizontal, and at the instant the rocket leaves it, its engines turn off and

    asked by christina on February 2, 2014
  24. Physics

    Two blocks of weights 77.0 and 114.0 N are connected by as massless string and slide down an inclined plane making an angle of 45.0 deg. to the horizontal. The cofficient of kinetic friction between the lighter block and the plane is 0.15 and that between

    asked by Yari on March 20, 2014
  25. Chemistry

    Calculate the concentrations of all species in a 0.810 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4 x 10^-2 and Ka2 = 6.3 x 10^-8 so I'm trying to find Na, SO3 2-, HSO3-, H2SO3, OH-, H+ and heres what I

    asked by Katherine on April 20, 2012
  26. Physics

    You throw a baseball at a 45∘ angle to the horizontal, aiming at a friend who's sitting in a tree a distance h above level ground. At the instant you throw your ball, your friend drops another ball. The two balls will collide, no matter what your ball's

    asked by Megan on April 8, 2016
  27. MATH

    A ball is thrown with an initial velocity of v feet per second, at an angle of θ with the horizontal (see figure in the website below). Find the vertical and horizontal components of the velocity. (Let v = 70 and θ = 40°. Round your answers to two

    asked by ghost on February 25, 2019
  28. pre calculus

    The population of foxes in a certain region over a 2-year period is estimated to be P1(t) = 300 + 50 sin(πt/12) in month t, and the population of rabbits in the same region in month t is given by P2(t) = 4000 + 400 cos(πt/12) . Find the rate of change of

    asked by ChrismB please help me on May 12, 2016
  29. math

    A bank wishing to determine the average amount of time a customer must wait to be served took a random sample of 100 customers and found that the mean waiting time was 7.2 minutes. Assuming that the population standard deviation is known to be 15 minutes,

    asked by Anonymous on May 22, 2014
  30. Algebra 2

    Damon thank you for the previous help. A geyser sends a blast of boiling water high into the air. During the eruption, the height (h) (in feet) of the water (t)seconds after being forced out from the ground could be modeled by h = -16t*t + 70t. The last

    asked by Adam on March 12, 2008
  31. Chemistry

    My question is why is benzene less reactive than 1,3,5-cyclohexatriene? I cannot find anything on 1,3,5 cyclohexatriene and why it is more reactive. I know that benzene does not undergo addition reactions and is extremely stable to oxidizing reagents. C

    asked by Megan on February 11, 2008
  32. Physics

    A hiker throws a ball at an angle of 21.0 degrees above the horizontal from a hill 21.0 m high. The hiker's height is 1.750 m. The magnitudes of the horizontal and vertical components of the velocity are 14.004 m/s and 5.376 m/s, respectively. Find the

    asked by Willie on September 21, 2009
  33. Math

    A woman drove her car on a road running due north at a given rate for 6 hours. She continued her trip on an unsaved road due east for 5 hours at a rate of 4mph slower. Had she been able to go to her destination in a straight line from her starting point

    asked by Joey on February 2, 2017
  34. math 116

    The table lists data regarding the average salaries of several professional athletes in the years 1991and 2001 year salary A) use the data points to find a linear function that fits the data B) use the function to predict the average salary in 2005 and

    asked by trudy on October 12, 2010
  35. math

    Ricardo wants to cover a 8" by 10" by 5" box with contact paper How many square inches of caontact paper will he need? How much ribbon will he need if the bow itself adds 15" just do l*W*H 8*10*5 then for the ribbon just add 15 to the solution of 8*10*5 =

    asked by Preston on January 22, 2007
  36. Physics

    Two blocks of weights 77.0 and 114.0 N are connected by as massless string and slide down an inclined plane making an angle of 45.0 deg. to the horizontal. The cofficient of kinetic friction between the lighter block and the plane is 0.15 and that between

    asked by Anonymous on March 24, 2014
  37. Physics

    In a physics experiment, 250g of water is placed in a 50g calorimeter cup made of aluminum when both are at 15C. Steam at 100C is completely absorbed by passing it through the water, raising the temperature of water and cup to 45C. Find the mass of steam

    asked by Tsunayoshi on February 4, 2014
  38. stats

    Suppose the mass of college students can be modeled by the normal distribution. We believe the mean of the normal distribution is 72 kg. We randomly sample 18 students and find an average of 69 kg and a standard deviation of 4kg. A. The standard error of

    asked by judy on March 31, 2010
  39. Pre Calculus

    He needs two adjacent rectangular enclosures - he has 300 feet of fencing. a. find a function that models the total area of enclosures with respect to the width of the enclosures. b. write your function in vertex form using the vertex formula. c. what is

    asked by emily on September 29, 2013
  40. math

    On Monday afternoon, Andrew rowed his boat with current for 4.5 hours and covered 27 miles, stopping in the evening at a campground. On Tuesday morning he returned to his starting point against the current in 6.75 hours. Find the speed of the current and

    asked by Sean charles on January 26, 2011
  41. pHYSICS HElp

    ***EXTRA CREDIT*** Figure 8-33 shows a 1.50 kg block at rest on a ramp of height h. When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width

    asked by Kelly on March 31, 2010
  42. math

    Two planes leave simultaneously from Chicago's O'Hare Airport, one flying due north and the other due east. The northbound plane is flying 50 miles per hour faster than the eastbound plane. After 3 hours the planes are 2840 miles apart. Find the speed of

    asked by Anonymous on February 4, 2019
  43. Physics

    In a physics experiment, 250g of water is placed in a 50g calorimeter cup made of aluminum when both are at 15C. Steam at 100C is completely absorbed by passing it through the water, raising the temperature of water and cup to 45C. Find the mass of steam

    asked by Tsunayoshi on February 2, 2014
  44. Physics

    1) Planet Zero has a mass of 5.0*10^23 kg and a radius of 2.0*10^6 meters. What is the acceleration of gravity on planet zero? 2)Phobos, a satellite of Mars, has a radius of 11km and a mass of 10^16 kg. Its a bit lumpy, but let's assume its spherical to

    asked by Charlie on December 6, 2014
  45. statistics

    Does studying for an exam pay off? The number of hours studied, x, is compared with the exam grade received, y. x 7 7 5 5 7 y 95 90 75 85 95 (a) Complete the preliminary calculations: SS(x), SS(y), and SS(xy). Incorrect: Your answer is incorrect. . (SS(x))

    asked by Tom on May 26, 2013
  46. physics

    You are at a archeological dig an discover a strange artifact. It is a utinsil tha appears to be carved out of an elephant's tusk You analyze it and discover that it has 0.625 the amount of carbon -14 you woul find in a living specimen. How many half lives

    asked by Jeff on August 24, 2014
  47. math

    1) the average of four positive numbers is 15. The second number is 2 times the first number. The third number is twice the second. The last number is the last square of the first number. what is the largest number? 2) suppose that 4x^2 + 8xy +4xy^2=576.

    asked by Jessica on March 23, 2018
  48. for David, French

    Thank you for using the Jiskha Homework Help Forum. I have been unable to read your question because of "error, Gateway timed out" BUT since I know you are requesting a translation site to do long sentences correctly, let me post what I wrote yesterday for

    asked by SraJMcGin on December 19, 2006
  49. geometry

    obtuse triangle ABC with obtuse angle B. Point D on side AC such that angle BDC is also obtuse. Angle DAB is 2/3 of angle ABD. Angle BCD is 1/5 of angle CBD is 4 more than angle BAD. Find the measure of angle ABC.

    asked by suzy on November 30, 2010
  50. Algebra II

    Our current assignment is to find the LCM, Least Common Multiple of two polynomials. I think I'm doing it right but I'm not quite sure. For the first question: 2t^2+t-3, 2t^2+5t+3 I have 2t^2+t+3 as the LCM. Is this correct or can somebody step me through

    asked by Dave on February 15, 2007
  51. math

    I posted this early, I don't understand, Two angles are complementary. The sum of the measure of the first angle and one-fourth the second angle is 87.75 degrees. Find the measures of the angles? What is the measure of the smaller angle? What is the

    asked by TIM on May 21, 2010
  52. HELP MATH

    how would u simplify this problem i think it is 60 --- x^6 am i right the problem is 5 4 3 _ + ___ - ___ x x^2 x^3 I'm going to assume your problem is this: 5/x + 4/x^2 - 3/x^3 To simplify, find a common denominator, which is x^3 in this case. Using the

    asked by cassii on August 8, 2006
  53. physics

    (a) Assuming that each cubic centimeter of water has a mass of exactly 1 g, find the mass of 3.76 cubic meter of water in kg. (b) Suppose that it takes 10.4 hours to drain a container of 59.1 m^3 of water. What is the “mass flow rate,” in kg/s, of

    asked by sagara on January 26, 2011
  54. calculus

    At the instant when the radius of a cone is 3 inches, the volume of the cone is increasing at the rate of 28.27433388 cubic inches per minute. If the height is always 3 times the radius, find the rate of change of the radius at that instant?

    asked by joseph on December 30, 2010
  55. calculus help please

    At the instant when the radius of a cone is 3 inches, the volume of the cone is increasing at the rate of 9 pi or 28.27433388 cubic inches per minute. If the height is always 3 times the radius, find the rate of change of the radius at that instant?

    asked by philip on December 30, 2010
  56. Math

    A room is in the shape of a right triangle. The hypotenuse is 8 meters longer than the short leg and the long leg is 4 meters longer than the short leg. Find the length of each side. (ok, now how can it be done if I change each side to cm and km, then ft

    asked by Julie on February 21, 2011
  57. algebra

    the formula d=(square root)12,800+h^2 gives the distance d in kilometers to the horizon from a satellite h kilometers above Earth.Find the distance to the horizon to the horizon from a satellite 4200 km above Earth. Round to the nearest kilometer. PLEASE

    asked by alexis on December 6, 2012
  58. Physics

    Two masses of 4.25 kg each, connected by a string, slide down a ramp making an angle of 44° with the horizontal. The coefficient of kinetic friction between m1 and the ramp is 0.31. The coefficient of kinetic friction between m2 and the ramp is 0.12. Find

    asked by Brian on October 6, 2009
  59. physics 3!! **

    A man lifts a 3 kg crate from the floor to a shelf (2 m high) at constant speed*. What was the change in KE of the crate? What is the change in the PE of the crate? If it takes 2 s for the man to lift the crate to the shelf, find the man's power output.

    asked by kelsey on October 6, 2008
  60. SS

    You want to find a painting of Abraham at a religious art exhibit. Where are you more likely to have success? A:in the Jewish, Christian, or Muslim displays. B:only in the Jewish display. C:in the Christian and possibly Jewish displays. D:in the Muslim

    asked by Jaden on February 8, 2017
  61. Statictics

    In testing a new drug, researchers found that 20% of all patients using it would have a mild side effect. A random sample of 25 patients using the drug is selected. Find the mean and standard deviation of patients having a mild side effect.

    asked by Netta on May 19, 2014
  62. SOCIAL STUDIES

    I am doing a country project on India and I need to know the climate of India. I tryed looking for some facts but I didn't find any. Please suggest me some good sites for finding the climate of India or just give some good facts for India's climate. Thanks

    asked by Zoey on October 2, 2010
  63. Chemistry

    10.0 grams of magnesium reacted with fluorine to produce MgF2 Find balance equation: 2MgF2=2MgF 1)can someone explain to me how many grams of fluorine reacted with magnesium. 2)How many grams of MgF2 were formed in the reaction?

    asked by malina on December 2, 2012
  64. chemistry

    0.10 mol of molecule A is added to 1.0 mol pf molecule B.The initial volume of B was 1.1L and the final volume of the solution is 1.039L. Assuming that the partial molar volume of B is exactly 50% greater than that of A, find the partial molar volumes of

    asked by mistylight04 on May 11, 2010
  65. Math

    In a class of 156 students who took maths and physics they all passed at leat 1 subject 75 pass math and physics.if twice has passed physics find how many students pass math only. Represent in Venn diagram.

    asked by Tolu on June 4, 2017
  66. finding c: calc

    let f(x)=square root x. if the rate of change of at x=c is twice its rate of change at x=1, then c=? what???? i don't get get it. to begin with, i took the derivative if that helps which is 1/(2*sqrtx) . f'(x) = 1/(2*sqrtx) is correct f'(x=1) = 1/2 The

    asked by david on December 5, 2006
  67. Science

    2 spherical containers- P and Q are connected by a tap. P contains a gas at pressure 5 atm at 300K. Q contains same gas at pressure 2 atm at 400K. If tap is opened find the final pressure. Given: volume of Q is 4 times volume of P.

    asked by Sanchit on November 30, 2015
  68. calculus

    please help! having issue with exponent part of problem. I come to 16x^4 but I think it should be 16x^3.i also have complications with finding the domains. find the derivative of the function using the definition of derivative. f(x)=4x^4 f'(x)=? State the

    asked by brit on February 5, 2018
  69. Math

    The volume of a rectangle prism with a square bases is 5880 cubic inches and it's height is 30 inches. Find the side length of the square base? 5880\30 = 196 square = side length of 14

    asked by Jake on April 2, 2015
  70. calculus

    how can I determine the domain of a function h(x): integrate from 0 to 2x-1 f(t)dt, when the f(x) function is a graph shown and equations for both semicircles in the graph are: square root of 4x-x(squared) and for the second one -square

    asked by alex on March 9, 2011
  71. physics

    consider a solid cylinder rolling from rest down a plane inclined at an angle theta to the horizontal.After rolling down a distance s down the plane,determine (i) acceleration of the cylinder (ii) if the cylinder is hollow ; find its acceleration after a

    asked by victor2 on August 3, 2011
  72. physics

    Two masses of 3.25 kg each, connected by a string, slide down a ramp making an angle of 31° with the horizontal. The coefficient of kinetic friction between m1 and the ramp is 0.31. The coefficient of kinetic friction between m2 and the ramp is 0.17. Find

    asked by Brad on February 27, 2015
  73. Calculus

    Find the area between the curve y=4/x and the x-axis from x=1 to x=e. It is a review question for my final exam and I am really stuck on how to solve You should hope for a final exam question so easy. area= INT y dx= INT 4/x dx from 1 to e area= 4ln x from

    asked by Evan on April 29, 2007
  74. binomial probabbility

    Assume that a procedure yields a binomial distribution with a trial repeated n times. use the binomial probability formula to find the probability of x success given the probability p of success on a single trial. 1. by formula- n=9, x=2, p=0.35 2. by PDF-

    asked by bibi on September 23, 2011
  75. Third Grade Math

    Baseball teams Manatees won 4 more games than the Herons. They played 9 games in all. What is the fraction amount of games won for the Herons? I don't even know where to begin to solve this. I don't know how to figure out how to find 4 more. I know the

    asked by Sheila on November 29, 2016
  76. Maths

    Mr Lee start from her home,and goes 250m due south,then 200m due east,and finally 100 due south to a shopping mall.Find the distance between her home and shopping mall.

    asked by Anonymous on August 21, 2017
  77. Maths

    a plane flies from A to B , a distance of 120 kilometres on a bearing of 035 degrees. he then changes direction and flies to a further distance of 200 kilometres in a bearing of i25 degrees. find the distance AC to the nearest kilometre

    asked by AAliyah on November 17, 2016
  78. math

    One cubic meter (1.00 m3) of aluminum has a mass of 2.70E+3kg, and 1.00m3 of silver has a mass of 1.05E+4kg. Find the radius of an aluminum sphere whose mass is the same as that of an silver sphere of radius 1.07cm.

    asked by andy on September 7, 2014
  79. algebra

    an arrow is shot into the air with an initial velocity of 96 feet per second. the height in feet of the arrow t seconds after it was shot into the air is given by the function h(x)=-16t^2+96t. find the maximum height of the arrow. what is the answer

    asked by Anonymous on June 14, 2011
  80. calc

    Suppose the marginal cost is C′(x) = e^−0.3x , where x is measured in units of 200 items and the cost is measured in units of $10,000. Find the cost corresponding to the production interval [200, 1,000]. Round to the nearest dollar.

    asked by Anonymous on August 19, 2016
  81. earth

    A man stands at the north pole, his mass is 100 kg. Later he goes and stands at the equator. Compute what force he exerts on the earth when he stands at the: a) north pole, b) equator. Which force is greater and find the difference.

    asked by Terry on September 7, 2011
  82. ap physics c

    Hi! I am struggling with this problem-- any help would be much appreciated-- thank you astronauts on their way to the moon reach a point --> at this point, the moon's gravitational pull becomes stronger than the earth's gravitational pull-----find the

    asked by APpreciative student on January 2, 2011
  83. Geometry

    A ladder resting against a wall forms an angle of 60 degree with the level ground. If the foot of the ladder is moved out from the wall 8ft. the ago forms with the ground is 45 degree. Find the length of the ladder.

    asked by Jas on May 1, 2016
  84. chemistry

    Find DHo for BaCO3(s) --> BaO(s) + CO2(g) given 2 Ba(s) + O2(g) --> 2 BaO(s) DHo = -1107.0 kJ Ba(s) + CO2(g) + 1/2 O2(g) --> BaCO3(s) DHo = -822.5 kJ 1. -1929.5 kJ 2. 537.0 kJ 3. 269.0 kJ 4. -284.5 kJ 5. -1376.0 kJ i got 537.0 kJ....is that right :S HELP

    asked by harsha on November 24, 2009
  85. Precalculus

    Find the vertex, focus, and axis of symmetry of the parabola x^2-10x-8y+29 = 0. ==> I do it over and over and over, but I keep getting the same answers of (5,4) for the vertex, (5,6) for the focus, and x = 5 for the LOS, but according to this one website,

    asked by Emily on December 7, 2009
  86. physics

    Find the electric field strength |E| at point P right above the edge of a metal ring. The ring has a linear charge density ë. Radius of the metal ring is R, the distance from the edge of the metal ring to Point P is D. thank you for helping.

    asked by lam on September 27, 2012
  87. astronomy

    Why is there a argument about Pluto the planet. There's an argument about Pluto the planet because some people say that Pluto should not be part of our solar system and not be considered a planet due to it's size but other people think it should remain a

    asked by singh on May 14, 2007
  88. Physics

    A radioactive nucleus at rest decays into a second nucleus, an electron, and a neutrino. The electron and neutrino are emitted at right angles and have momenta of 9.80 10-23 kg·m/s, and 5.80 10-23 kg·m/s, respectively. What is the magnitude and direction

    asked by Joe on November 21, 2010
  89. Math

    Ja son éranse $20 per game. Erige expresión to find how much money ja son will earn for refereeing any Number of games. Let n representa the Number of games jason has referendo. How much will he earn for refereeing 6 games

    asked by Anonymous on September 16, 2015
  90. physics

    Given that the side of the square has a length b-a, find the area of one of the four triangles and the area of the small inner square. Give the area of one of the triangles followed by the area of the small inner square separated by a comma. Express your

    asked by Eli on September 2, 2011
  91. ALGEBRA

    A single card is drawn from a standard deck of cards. Find the following probabilities. A face card is a jack, queen, or king. P(face card | queen) = Correct: Your answer is correct. P(three | not a face card)

    asked by Mike on May 23, 2012
  92. physics

    A 51.5-kg skater is traveling due east at a speed of 2.70 m/s. A 69.5-kg skater is moving due south at a speed of 7.50 m/s. They collide and hold on to each other after the collision, managing to move off at an angle θ south of east, with a speed of vf.

    asked by Anonymous on January 12, 2015
  93. physics

    A soccer ball is kicked from the ground with an initial speed of 14.5 m/s. After 0.272 seconds, ts speed is 12.4 m/s. (A) Give a strategy that will allow you to calculate the ball's initial direction of motion. (B) Use your strategy to find the initial

    asked by Mima on September 16, 2012
  94. Algebra

    The ratio of the length to the width of a golden rectangle is (1 + √(5):2:.The dimensions of a garden form a golden rectangle. The width of the garden is 12 feet. Find the length L of the garden. Round your answer to the nearest foot.

    asked by Tom on May 24, 2018
  95. Math (Pre-Calc)

    An airplane is flying east at a constant altitude of 28,000 meters. When first seen to the east of an observer, the angle of elevation to the airplane is 71.5 degrees. After 73 seconds, the angle of elevation is 51.6 degrees. Find the speed of the

    asked by Tina on April 7, 2012
  96. Math, derivatives

    Let g(x) = sin (cos x^3) Find g ' (x): The choices are a) -3x^2sinx^3cos(cos x^3) b) -3x^2sinx^3sin(cos x^3) c) -3x^2cosx^3sin(cos x^3) d) 3x^2sin^2(cos x^3) I'm not exactly sure where I should start. Should I begin with d/dx of sin? Or do the inside

    asked by Marissa on May 11, 2008
  97. statistics

    a math class has 50 students , of these 22 students are math majors and 18 students are male. Of the math majors 16 are female. Find the probability that a randomly selected student is male or a math major . my answer 22/50 and 18/50 = 396/50= 7.29

    asked by brittaney on March 3, 2016
  98. Math

    A standard deck of playing cards is shuffled and three people each choose a card. Find the probability that the first two cards chosen are clubs and the third card is black if the cards are chosen with replacement, and if the cards are chosen without

    asked by Ashley on July 14, 2014
  99. song

    I am not a music person and I rarely lisen to music. My teacher made us do an essay to modern music that has the theme of freedom or going to a better place. Does anyone know a song that has both freedom and going to a better place? or asking for help? can

    asked by Chopsticks on January 21, 2009
  100. Maths

    Mr Lee start from her home,and goes 250m due south,then 200m due east,and finally 100 due south to a shopping mall.Find the distance between her home and shopping mall.

    asked by Lai on August 21, 2017

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