Questions Asked on
February 26, 2011

  1. physics

    The drawing shows an extreme skier at bottom of a ski jump. At this point the track is circular with a radius r. Two forces act on the skier, her weight mg and the normal force FN. Which relation describes how the net force acting on her is related to her

    asked by annie
  2. AP Physics

    15. A 3.0 kg block is pushed 3.0 m at a constant velocity up a vertical wall by a constant force applied at an angle of 30.0 with the horizontal, as shown in the figure. The acceleration of gravity is 9.81 m/s2. If the coefficient of kinetic friction

    asked by jeff
  3. math

    Numbered disks are placed in a box and one disk is selected at random. There are 6 red disks numbered 1 through 6, and 7 yellow disks numbered 7 through 13. In an experiment a disk is selected, the number and color noted, replaced, and then a second disk

    asked by Anonymous
  4. chem

    Which of the following compounds would be expected to form intermolecular hydrogen bonds in the liquid state? (Select all that apply.) HCO2H CH3OCH3 (dimethyl ether) CH3CO2H (acetic acid) CH3OH (methanol) thanks:)

    asked by Rebekah
  5. calculus

    please help. Compute Δy and dy for x = 4 and dx = Δx = -0.2. (Round the answers to three decimal places.) y = 4x - x2....im lost to were to start solving for delta y

    asked by nic
  6. Chemistry

    Which of the following aqueous solutions are good buffer systems ? . 0.26 M hydrochloric acid + 0.24 M potassium chloride . 0.14 M acetic acid + 0.20 M potassium acetate . 0.16 M potassium hypochlorite + 0.23 M hypochlorous acid . 0.31 M hydrocyanic acid +

    asked by Chris
  7. statistics

    The test scores for 9 students on the Unit 1 test were 35, 25, 50, 95, 80, 60, 45, 100, and 90. What is the value of the second quartile for this data set?

    asked by josh
  8. calculus

    Use analytic methods to find the global extreme values of the function on the interval and state where they occur. y=x(2-x)^(1/2), -2

    asked by Jocelyn
  9. Math

    A manufacturer estimates that the profit P from producing x units of a commodity is P=-x^2+40x-100 dollars per week. What is the maximium profit he can realize in one week? I was going to take the derivative of the equation and set it equal to 0 and then

    asked by Hannah
  10. chemistry

    105 of is initially at room temperature (22.0). A chilled steel rod at 2.0 is placed in the water. If the final temperature of the system is 21.3, what is the mass of the steel bar?

    asked by shannon
  11. chemistry

    "A 280ml flask contains pure helium at a pressure of 754 torr . A second flask with a volume of 475ml contains pure argon at a pressure of 732 torr . If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial

    asked by T
  12. physics

    A 84 kg diver steps off a 10 m tower and drops from rest straight down into the water. If he comes to rest 4.7 m beneath the surface, determine the average resistance force exerted on him by the water.

    asked by floyd
  13. statistics

    in a distribution of scores with a mean of 1500 and a standard deviation of 250, what is the 95th percentile?

    asked by Ruben
  14. AP Physics

    A student weighing 700 N climbs at constant speed to the top of an 8 m vertical rope in 10 s. The average power expended by the student to overcome gravity is most nearly 1. P = 560 W. 2. P = 87.5 W. 3. P = 5, 600 W. 4. P = 1.1 W. 5. P = 875 W.

    asked by jeff
  15. AP Physics

    22. a)You are a pirate working for Dread Pirate Roberts. You are in charge of a cannon that exerts a force 20000 N on a cannon ball while the ball is in the barrel of the cannon. The length of the cannon barrel is 2.19 m and the cannon is aimed at a 32

    asked by jeff
  16. physics

    Calculate the gravitational force between the Sun and Neptune. The mass of the Sun is 1.99×1030 kg. The mass of Neptune is 1020×1023 kg. The distance between them is 450×1010 m.

    asked by Jane
  17. physics

    How will you find the height of a tall tower using a long-enough thread? You only have a stop-watch with you. So you can only measure time and not length. Explain the method by stating the formula you will use to calculate the height of the tower.

    asked by calous --- HELP PLEASEE!!!
  18. Environmental engineering

    The company you work for plans to release a waste stream containing 7 mg/L of benzaldehyde . Assuming that benzaldehyde degrades according to the reaction: C7H6O + 8O2 → 7CO2 + 3H2O Calculate the theoretical carbonaceous oxygen demand of this waste

    asked by Jazmin
  19. statistics

    Suppose a basketball player successfully makes 70% of the free throw shots they attempt. Let X represent the number of successful attempts in 120 independent attempted free throws. (A) What is the true probability distribution of X? (B) Find the mean and

    asked by Adam
  20. operations management

    A critical dimension of the service quality of a call center is the wait time of a caller to get to a sales representative. Periodically, random samples of 6 customer calls are measured for time. Results from the last five samples are shown in the table.

    asked by Anonymous
  21. physics

    free fall on the moon is 1.62m/s2 What is the lenght of the pendulum whos period on the moon mtches the period of 1.80m long on Earth?

    asked by pam
  22. Physical Science

    A stationary but moveable 450-kg cannon is fired and the 12-kg cannonball moves off to the right with a velocity of 20.0 m/s. What is the connon's velocity (both magnitude and direction) due to the kickback from the firing?

    asked by Tina
  23. physics

    Which of the following statements is not true about a particle executing Simple Harmonic Motion? Choose one answer. a. Its velocity is maximum at the equilibrium position. b. Its acceleration depends only upon its displacement at that instant. c. Its

    asked by calous --- HELP PLEASEE!!!
  24. chemistry

    how wold you prepare 2.00L of 1.00M HCl solution using 6.00 M HCl? i already found the volume of 6.00M HCl needed to be .333L. i am confused about how to actually prepare the solution. do i used a volumetric flask or any other glassware?

    asked by lindy
  25. Physics

    A cyclist coasts up a 10.3° slope, traveling 17.0 m along the road to the top of the hill. If the cyclist's initial speed is 9.90 m/s, what is the final speed? Ignore friction and air resistance. Any help would be great.

    asked by Ryan
  26. Calculus

    The area a meadow was approximated by measuring the length of the meadow at 30-foot intervals. THe distances measured across the meadow were 76 ft, 118 ft, 130 ft, 143 ft, 139 ft, 136 ft, 137 ft, 139 ft, 130 ft, 122 ft, and 60 ft. Use Simpson's Rule to

    asked by Lena
  27. Algebra

    Jennifer takes a job with a starting salary of $39,000 for the first year with an annual increase of 5% beginning in the second year. What is Jennifer's salary, to the nearest dollar

    asked by amber
  28. Math

    which of the following graphs could represent a function with the following 3 properties? 1) f(x)>0, for x0 would mean that the graph is above the x axis, and f'(x) is less than or equal to 0 would mean that the slope is negative. Is this correct?

    asked by Hannah
  29. algebra2/trig

    tina can paint a room in 8 hours, but when she and her friend emily work together, they can complete the job in 3 hours. how long would it take emily to paint the room alone?

    asked by jackie
  30. Physics

    A 91 kg man lying on a surface of negligible friction shoves a 75 g stone away from himself, giving it a speed of 4.0 m/s. What speed does the man acquire as a result?

    asked by William
  31. physics

    Cloverleaf exits are approximately circular. A 1256 kg automobile is traveling 58 mph while taking a cloverleaf exit that has a radius of 35.4 m. Calculate the centripetal acceleration of the car and the centripetal force on the car. Remember that 1 mph =

    asked by mac
  32. Government

    With regard to public opinion, the Supreme Court a. ignores it completely in order to make decisions that are based on enduring values rather than the public’s passing whims. b. remains uninformed about it because justices stay on the bench for life and

    asked by Anthony
  33. Calculus

    let d2y/dx2= 6x. Find a solution to the differential equation that is continuous for negative infinity to positive infinity and whose graph passes through the point (0,1) and has a horizontal tangent there.

    asked by Anastasia
  34. Calculus

    Use a graphing calculator to graph f(x)=x^4-6x^3+11x^2-6x. Then use upper sums to approximate the area of the region in the first quadrant bounded by f and the x-axis using four subintervals.

    asked by Catalina
  35. physics

    A mass on a string of unknown length oscillates witha period of 6.0s What is the period if the mass is doubled?

    asked by pam
  36. math

    if you have 15 coins in a bag and their total amount is $2.70 how many quarters and dimes are in the bag? Use substitution to solve

    asked by mary
  37. statistics

    On one 100-point test, Lisa managed to get 74 points. On a separate 100-point test, Paul managed to get 74 points. But when these scores were converted to z scores, Lisa received -1.25 and Paul received -1.30. Which of these students received a higher

    asked by Crystal
  38. chemistry

    What intermolecular force(s) must be overcome to do the following. (a) sublime ice hydrogen bonding dipole-dipole interactions (not hydrogen bonding) induced-dipole/induced-dipole forces ion-dipole force You can choose one. Can some one please explain. I

    asked by Rebekah
  39. Geometry

    The measure of the supplement of an angle is one fourth the measure of the angle. What is the measure of each angle?

    asked by Thomas
  40. ap Physics

    1. a)A 15.6 kg block is dragged over a rough, horizontal surface by a constant force of 72.2 N acting at an angle of angle 34.8 above the horizontal. The block is displaced 24.6 m and the coefficient of kinetic friction is 0.234.Find the work done by the

    asked by jeff
  41. chemistry

    Calculate the H3O^+ and OH^- ion concentrations in a solution that has a pH of 3.72.

    asked by Maria
  42. HELP PLEASE

    I have to submit a complaint on any advertisment which I think should be banned And it should be one that you feel violates any clause of the Canadian Code of Advertising Standards or the Gender Portrayal Guidelines. Write a letter of complaint following

    asked by Anonymous
  43. AP Physics

    The initial kinetic energy imparted to a 0.72 kg bullet is 1777 J.The acceleration of gravity is 9.81 m/s2. Neglecting air resistance, find the range of this projectile when it is fired at an angle such that the range equals the maximum height attained.

    asked by jeff
  44. Calculus

    Find the area in the second quadrant bounded by the x-axis and f(x)=sqrt((x^3/8)+1)

    asked by Hannah
  45. Calculus

    Transportation engineers use traffic flow data to design the timing of traffic lights at intersections. At a certain intersection, the traffic flow, F(t), is modeled by the function F(t)=82+4sin(t/2) when 0¡Üt¡Ü30 minutes, where F(t), in vehicles per

    asked by Jemima
  46. SCI

    at room temperature, all samples of liquid water must have the same...

    asked by Cordal
  47. Math

    A clown was shot out of a cannon at ground level. Her height above the ground at any time (t) was given by the function h(t) = -15t2 + 15t What was height at t(1), t(2),and t(3)? The flight will last how many seconds??

    asked by Bob
  48. Physics

    An electric power plant that would make use of the temperature gradient in the ocean has been proposed. The system is to operate between 20.0°C (surface water temperature) and 5.00°C (water temperature at a depth of about 1 km). The first question asks

    asked by Z32
  49. AP Physics

    27. a)In the 1950’s, an experimental train that had a mass of 32800 kg was powered across a level track by a jet engine that produced a thrust of 4.37× 10^5 N for a distance of 465 m.Find the work done on the train. Answer in units of J. b)Find the

    asked by jeff
  50. College Chemistry

    Determine the pH of a solution that contains 5.3*10^-2 M in HClO4 and 3.0*10^-2 M in HCl?

    asked by Mickey
  51. Math Help

    1) 1+cos(3t)/ sin(3t) + sin(3t)/( 1+ cos(3t))= 2csc(3t) 2) sec^2 2u-1/ sec^2 2u= sin^2 2u 3) cosB/1- sinB= secB+ tanB

    asked by suzi
  52. math

    Solve the problem. 31) For a party, Mary has to bake 5 cakes, 3 pies, and 4 trays of cookies. One cake requires 2.5 cups of flour, one pie requires 1.25 cups of flour, and one tray of cookies needs 0.75 cups of flour. How much flour in all does Mary need

    asked by Anonymous
  53. physics

    A horizontal force of magnitude F = 110 N is used to push a box of mass m = 6 kg from rest a distance d = 16 m up a frictionless incline with a slope q = 28°. a) How much work is done by the force on the box? b) How much work is done on the box by the

    asked by Lyla
  54. Chemistry

    what mass of carbon dioxide is produced by the combustion of 50.0 g of propane

    asked by Anonymous
  55. physics

    A particle vibrates in Simple Harmonic Motion with amplitude. What will be its displacement in one time-period if you attach a mass to the spring from its initial equilibrium position, it vibrates forever in simple harmonic motion. Why doesn't it come to

    asked by calous --- HELP PLEASEE!!!
  56. chemistry

    an insoluble precipitate was formed when a solution of 1.000 L of 0.750 M sodium carbonate (Na2CO3) was mixed with .5000 L of 1.50 M solution of iron (III) nitrate (Fe(NO3)3). what is the concentration of all ions present after the reaction is complete?

    asked by mel <3
  57. Math

    If a student's percentile rank in a class of 400 students is 87, how do I find the student's class rank.

    asked by David
  58. World Lit.

    are the female characters victims or natural survivirs and do they deserve more pity or admiration? in Candide

    asked by ricki
  59. statistics and probability

    It is known that an exam scores of students in STAT 2507 follow a normal distribution with a mean of 70% and a standard deviation of 9%. (A) If a student must obtain a mark of 50% to pass the exam, what proportion of students fail the exam? (B) What is the

    asked by Adam
  60. FRENCH- BANGS

    Bangs really confuse me:( Could I get a few notes on them please, I already checked the internet. B stands for beauty A stands for age N stands for number G stands for goodness S stands for size These are all adjectives, what confuses me is that are they

    asked by Sidney
  61. chemistry

    What would be the pH of 0.568 g of HClO4 per 250 mL of solution?

    asked by Vaneza ASAP
  62. Accounting

    Cambridge Manufacturing Company, Inc. has 200 labor-hours available. There is no limit on machine hours. Cambridge can sell all of Product B that it wants, but it can only sell 30 units and 20 units of Products A and C, respectively. Product-A Product-B

    asked by Gail
  63. Definitions

    Is there a good website other than Wikipedia that has a good and brief definition of the words, "social justice"? I have to define it in my own words.

    asked by Alex L.
  64. algebra 1 sequences

    Year 2003 2004 2005 2006 Populatation 22.12 22.49 22.86 23.41 A. divide the population for each year by the population in the preceeding year. Round to the two decimal places and show the Texas population increase that is approximately geometric. 1.01 B.

    asked by amber
  65. ALGEBRA

    Find an equation in slope-intercept form passing through the points (2,5) and (7,-3). M=(-3,-5)/(7,-2) M=-8/5 IS THE SLOPE [Y=MX+B] 5=-8/5*2+B 5=-16/5+B 5+16/5=B (25+16)/5=B 41/5=B THE Y INTERCEPT Y=-8X/5 +41/5 HOW WOULD I SHOW A GRAPH ON THIS PROBLEM?

    asked by bianca
  66. Biological psychology

    What does mitosis produce and how?

    asked by Maria
  67. Stats

    In a distribution of scores with a mean of 234 and a standard deviation of 47, what is in the 43rd percentile ? and what formula do i use ?

    asked by Ruben
  68. English

    Can anyone tell what is a hickory slat?

    asked by Anonymous
  69. Trianle Fire

    What was the significance of the fire which occurred on March 25, 1911 at the Triangle Shirtwaist Company in New York City? Why were public officials motivated to act in response to the fire? How did the fire and the response to the fire impact the world

    asked by Anna
  70. maths

    k(t)=3-t^4/sin(4t) (0

    asked by emma
  71. Costs and Awards

    h t t p // w w w . educationplanner . ca / program . cfm?id=33362&view=details I went onto this site, and I have found the problem I want to take and what would be my insitution for that program? Website help - Ms. Sue, Sunday, February 20, 2011 at 5:23pm

    asked by Anonymous
  72. math

    12ab + 8ab + 5ab is it 25ab

    asked by pavleen
  73. world issues

    i need some detailed information about the history of any country in the world that has had major urban development. -why was the site chosen? (for development) - what is the nature of the urban area? - how much population and housing is there? - where do

    asked by mya
  74. Math

    Consider a polygon ABCDE with coordinates A(0,4), B(3,0), C(7,2) , D(11,6) and E(8,15) Choose all possible pairs from below at which a maximum over the region can be attained by a non constant linear function. [(0,4),(7,2)] [(0,4),(8,15)] [(7,2),(11,6)]

    asked by Melissa
  75. Stats

    In a distribution of scores with a mean of 234 and a standard deviation of 47, what is in the 43rd percentile ? and what formula do i use ?

    asked by Ruben
  76. Math

    What is 0.00023534 rounded to 2 decimal places? Is it 0.00024?

    asked by Nursing Student
  77. Math

    An equilateral triangle has the same sides. If one the sides measure 1.5 meters. What is it's perimeter ?

    asked by Jasmine
  78. physics

    if you attach a mass to the spring from its initial equilibrium position, it vibrates forever in simple harmonic motion. Why doesn't it come to rest after stretching by a distance 'd'; proportional to the weight of the mass, when the spring's restoring

    asked by calous --- HELP PLEASEE!!!
  79. physics

    A satellite is in orbit about Earth. Its orbital radius is 7.51×107 m. The mass of the satellite is 5415 kg and the mass of Earth is 5.974×1024 kg. Determine the orbital speed of the satellite in mi/s. 1 mi/s = 1609 m/s.

    asked by mac
  80. PHYSICS

    The weight of fully saturated soil in a prism having a 4.00 sq. ft. base (or a base of 4.00 ft*ft) is 4,000 lbs. Pore pressure at the base is 499 lbs/(ft*ft). True or False: The effective stress at the base is 501 lbs/(ft*ft).

    asked by dan
  81. Calculus

    An ant moves along the x-axis with velocity given by v(t)=tsin(t^2), t is greater than or equal to zero. Given that x(t) is the position of the particle at time t and that x(0)=3, find x(2) Find the total distance traveled by the particle from t=0 to t=2

    asked by Hannah
  82. chemistry

    a solid sample of impure Ba(OH)2 is added to 400.0 mL of 0.5000 M of aqueous HBr, a strong acid. the remaining solution was acidic. it was then titrated to equivalence point with 120.0 mL of 0.5000 M of NaOH solution. what mass of pure Ba(OH)2 was present

    asked by mel <3
  83. trigonometry (repost) Mathmate

    I want to start by saying thank you . You have no idea how much u have helped me understand logarithms, even better then the books i have (it poorly explains the subject of trigonometry let alone logarithms and antilog). Your last explanation was very

    asked by Anon
  84. sociology

    what effects of global tv programming acces from a functinalist, conflict, and inteactionist perspective.

    asked by brenda johnson
  85. Math MDM4U

    Event A represents the act of drawing a rank of eight from a standard deck of 52 cards, if B represents the event of drawing any diamond after the first card has been replaced into the deck, what is the probability of A and B.

    asked by Lorrie
  86. HE AGE OF JEFFERSON TO THE AMERICAN EXPANSION

    During Jefferson's presidency, cities were A. mainly ports for international trade. B. mostly found along the Mississippi. C. mainly industrial centers. D. mostly the haunts of thieves and degenerates

    asked by Anonymous
  87. algebra II

    Thank you for your prompt response. I have my homework I have to turn in in about 2 hours, but i am struggling to solve this question. Is there any way you can just give me the answer while I find a website that can show me step by step how to solve these

    asked by esther
  88. reading

    need to draw floor plan of my room and home I have to use my map story to show me example how do I draw my desk ??

    asked by Evan
  89. algebra II

    I would appreciate anyone's help in solving this problem.(1/4x^4+6/7x^3+1/8x^2+7) + (-3/4x^4+7/8x^2-7). Thank you kindly.

    asked by esther
  90. french

    i need help get done a french homework. its 16 pages long, onlye grammar questions. please anyone can help me or direct me to the right direction, to get help get done this job! either for free or involving money.

    asked by rahim
  91. Physical Science

    If a 2.0kg object is initially moving with a speed of 10 m/s and a 6.0 N force were applied in the direction of the motion, what would be the acceleration?

    asked by Tina
  92. Maths

    Can someone factorise 25x^2-25xy+6y^2 show your work please

    asked by Anonymous
  93. chemistry

    calculate the concentration of ions present after the reaction between 13.50mL of 2.00M BaCl2 and 2.50mL of 6.00M H2SO4 i just wanted to check my answers [Ba^2+]=1.69M [SO4^2-]=o.938M [H^+]=0 [Cl^-]=1.50M if they are wrong please explain

    asked by lindy
  94. Math

    Can someone please help me with these three question? I having a very difficlut time answering them May first question To select a _________ sample, the population is divided into disjoint subgroups according to some characteristics like income level, and

    asked by Latisha
  95. algebra II

    please, somebody help me Divide. x^2+7x-37/x+9. Please help me. I need all the help I can get. Thank you so much.

    asked by esther
  96. algebra

    A consumer electronics company sells 6.7 million MP3 players per month at a price of $100 apiece; when the price is lowered to $80, the company sells 10.2 million players per month. How many MP3 players can the company expect to sell per month at a price

    asked by bianca
  97. chemistry

    a solid sample of impure Ba(OH02 is added to .4000L of .5000M of HBr. the remaining solution was acidic, it was then titrated to equivalence point with .1200L of .5000M NaOH. what mass of pure Ba(OH)2 was present in the sample?

    asked by mel <3
  98. trigonometry

    Use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=32°28'30" I have to use logarithms and law of tangents . and then provide the check. which says law of sine or mollweids equation. I can't us the

    asked by Anon
  99. Chemisry

    How many moles of oxygen are present in 8g of oxgen gas.

    asked by Abba
  100. Unix Script

    "Using "if" statement checks for a file called "student.txt" in the current directory. Removes (deletes) the file if it exist. This file will collect last name, first name, and grade for 5 people. Use a while loop to get the information (last name, first

    asked by Tina
  101. Government

    The judiciary’s status as an independent branch of the national government rests on judicial review, which grants the judiciary the authority to a. make political decisions; judges can overturn any congressional or presidential decision they personally

    asked by Anthony
  102. algebra

    Seven inches are equivalent to 17.78 cm. Find the equation converting length in cm to length in inches. What is the length in inches of a 96.2 cm bar? 17.8cm =7 in. 1cm = (7/17.78)in 96.2cm = 96.2 (7/17.78)in 96.2cm = 37.874 in can this be graphed and how?

    asked by p eg
  103. physic

    a mass 2.9kg object moving at a speed of 5.9m\s sticks a mass 0.88kg object initially at rest. immeditaly after the collision the 2.9kg object has a velocity of 0.99m/s directed 27 degree from its initial line of motion. that is the speed of the 0.88kg

    asked by Anonymous
  104. Business Communications

    A job application letter is effective in convincing the reader that an applicant is knowledgeable of the company by?

    asked by Jenny
  105. Math

    Simplfy 10^1 x 10 ^-2 x 10 ^-1

    asked by Nicholas
  106. Math

    Suppose that y≤5⁢x,3⁢x≤y and 14⁢x+15⁢y≤1 together with 0≤x, 0≤y. The maximum value of the function y+x on the resulting region occurs at x=? and y=? The maximum value of the function is ?

    asked by Paul
  107. Math

    A diet management system produces two types of foods A and B. Food A contains (5,15,1,2) mg. per ounce of cholesterol, calcium, iron and vitamin C respectively and Food B contains (5,15,1,2) mg. per ounce of the same nutrients in order respectively A

    asked by Tracy
  108. Physics

    A 3.60 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.80 m, before compressing a spring of force constant 2.30*10^4 N/m. Find the maximum compression of the spring. Any help would be appreciated, this

    asked by Ryan
  109. Physics

    An 8.00 kg block is placed on a rough horizontal surface and connected to a spring of spring constant 100 N/m. The spring is then stretched by some distance A and released. The block will begin to oscillate back and forth across the surface. As the block

    asked by Trish
  110. Accounting

    Ferguson Company was started in 2008 when it acquired $60,000 from the issue of common stock. The following data summarize the company's first years' operating activities. Assume that all transactions were cash transactions. 2008 2009 2010 Purchase of Inve

    asked by Rosa
  111. Physics

    Which of the following is true? a. Conserved forces cannot do work b. Work can be performed on an object without moving it c. If the work is done by a conserved force, you do not need to know the path the object took d. To know the total work performed on

    asked by Paige
  112. Neptune High

    I am in a class for cosmetology my teacher want me to set up a time line with dates and what was created or accomplished who created it and to describ the prouct or accomplishment what dose a time linr look like and how do you set it up on paper with a

    asked by kamisha
  113. statistics

    a distribution has a mean of 5 and a standard deviation of 2, what is the z score of 8 ?

    asked by Ruben
  114. math

    how can i use the numbers 9 9 9 and 13 to make 24??

    asked by math
  115. Physics

    Is the trend for ionic radius just that for metals, they are smaller than the nuetral atom and for non-metals, and for non-metals, they are bigger than the neutral atom? Or is there another specific trend?

    asked by Emily
  116. Business Communitions

    "Investors And their wives" is considered sexist because?

    asked by Jenny
  117. physics

    a mass of 65 kg falls from rest 4.3m onto a spring with a stiffness coefficient of 62000 n/m. How far does the mass compress the spring?

    asked by Elmer
  118. physics

    if a 65 kg mass drops vertically onto a spring wit stiffness coefficient of 6.2x10 to the 4th power , how far does it depress the spring?

    asked by Elmer
  119. chemistry

    The pH of a 0.10 M solution of ammonia is 11.1. Find the hydroxide concentration.

    asked by Jazmin
  120. AP Physics

    6. a)A 1260 kg car accelerates uniformly from rest to 4.65 m/s in 2.6 s. Find the work done on the car in this time.Answer in units of J. b)Find the average power delivered by the engine in the first 1.768 s. Answer in units of W. c)Find the instantaneous

    asked by jeff
  121. Math

    x is a number between 3 and 50. How many vales of x is radical x / 13 a rational number?

    asked by Lauren
  122. Chemistry

    How do you dilute 100mL of 20ppm Fe3+ to 1,2,4,6,8 ppm, 50mL each?

    asked by Jerry
  123. Government

    Do you think that governors should have significant powers? I know there are about 14 states, Texas being one that their governor has very little power. But why should these governors be allowed more?

    asked by Joe
  124. Chemistry

    If a solution is made by mixing 50.0 moles of KOH to 3.4 kilograms of water, what is the solutions molality?

    asked by Samuel
  125. world history

    Which of the following was the first known king of Mesopotamia? A. Sargon B. Lipit-Ishtar C. Hammurabi D. Gilgamesh

    asked by lina
  126. Bio Medical Science

    What are the differences and similarities of the social structure and family values of persons from Bosnia and persons from Poland?

    asked by Sandy
  127. physical science

    Two 5.0kg rocks are 0.20m apart. What is the magnitude of the gravitational attraction between the rocks?

    asked by Tina
  128. Business Finance

    Break Even Analysis.. consider the following income statemenbt and answer the question that follow. Sales(100 units) $200 Variable cost (.80each) .80 Fixed cost 20 Ebit 100 interest expense 30 ebt 70 income tax 24 net income 43 What is the firm break even

    asked by Michael
  129. SOCIAL STUDIES

    WHY WAS THEODORE ROOSEVELT AMERICAN HERO

    asked by NYOMY
  130. science

    bacteria that change nitrogen from the air into compounds that plants can use is called _______________ i don't know what the answer is

    asked by pavleen
  131. math

    if p=a^2+a-1,which expression represents P+R

    asked by pavleen
  132. social studies

    Was the Civial War and the Spanish similiar because they were both fought on us soil.

    asked by NYOMY
  133. Unix Shell script

    Shell script Using "if" statement checks for a file called "student.txt" in the current directory. Removes (deletes) the file if it exist. This file will collect last name, first name, and grade for 5 people. Use a while loop to get the information (last

    asked by Tina
  134. Ma

    Autoparts Inc. produces three types of parts' assemblies: (P,Q,R)and they each require (2,5,3) units of work on machine I and (2,2,4) units of work on machine II respectively. The two machines have respectively (160,190) units of work available per day. It

    asked by Jeff
  135. CALC

    INTEGRAL OF Y^2/(25+Y^2)

    asked by tom
  136. Calculus

    Determine if f(x)=5/(x-3)^2 is integrable on [0,2]. Justify your answer.

    asked by Carmen
  137. physics

    If a mass of 65kg drops 4.3m onto a spring with a stiffness coefficient of 6.2x10n/m to the 4th power, how far does it compess the spring?

    asked by Elmer
  138. Biological Psychology

    What is a good site for a simple explanation on chromosomes, meiosis, mitosis, etc as it relates to biological psychology? I have a college level test to study for, and I am really struggling with the complicated text in the book.

    asked by Maria
  139. English

    Who is H. L. Mencken? What is he best know for? What was his reputation? Why was he disliked by many Southerners? can anybody help with this thanks

    asked by Anonymous
  140. Math

    Differentiate g(x)=(x^3+1)(3x^2-1) so I use g'(x) X h(x) + g(x) X h'(x) so the derivative of (x^3+1)=3x^2 and (3x^3-1)=6x So (3x^2)(x^3+1) + (x^3+1)(6x) Is this correct so far. If so this is where I am stuck. I am having trouble simplifing.

    asked by Hannah
  141. social studies

    what does the judicial branch do?

    asked by cindy love
  142. precalculas

    Given the function f(x)= 4+4x^2, calculate the following values: [f(a+h)-f(a)]/h

    asked by katrina
  143. English

    I have writiers block..How would I start my research paper on animal rights?

    asked by HELP?!?!
  144. math

    maria teresa leftthe libray at 5:30pm and began biking at the ratee of 20km/hr. by what time had she biked 35 killometers?

    asked by sarah
  145. helth

    i am in the 5th grade and need to know the function of heart and how to draw it

    asked by mimi
  146. North & Central America

    What ensures Canada's cold climate?

    asked by Emily
  147. accounting

    a song or poem to help remember the defintion of accountig

    asked by otania
  148. math

    f(x)=(1/2e^-6x) differientate

    asked by linda
  149. math 117

    help solve ã18+ã32=

    asked by scott
  150. Government

    According to the doctrine of judicial restraint, the judiciary should a. defer to the decisions of elected officials. b. deny most appeals for retrials. c. deny individual rights when they conflict with the majority’s desires. d. decline to make any

    asked by Anthony
  151. Government

    The contention that the Constitution contains moral language that justifies the vigorous protection of individual rights by the judiciary is a view compatible with a. judicial activism. b. judicial restraint. c. analytical jurisprudence. d. precedent-based

    asked by Anthony
  152. Science

    I need help how i can make a Volcanoes Concept Map

    asked by Anonymous
  153. ALGEBRA

    Sales tax in Pennsylvania is 6%. Create an equation for the total price (cost plus tax) of a purchase in PA in terms of its cost. How much would a person pay for a car whose cost is $32,000? PAY = COST + 0.06 * COST P=C(1+1.06) P=1.06C P= (32,000)=

    asked by PEG
  154. Math

    Which is a prime factorization? a. 5^2 x 7^2 x 18^3 b. 5^3 x 7^2 x 19^2 c. 6^2 x 7^3 x 18^2 d. 4^2 x 5^2 x 15^3

    asked by Nicholas
  155. Physics

    Is the trend for ionic radius just that for metals, they are smaller than the nuetral atom and for non-metals, and for non-metals, they are bigger than the neutral atom? Or is there another specific trend?

    asked by Emily-Help Please!
  156. Calculus

    Use the limit proces to find the are aof the region between the graph of the function f(x)=(-x^2)+4 and the x axis over the interval [0,2].

    asked by Yulka
  157. three language sentence

    daily language practice-correct the sentences and rewrite them correctly on the lines. circle subject and underline predicate. Finally, circle the correct type of sentence. The number of corrections is in parentheses. Ex: He discovered the dog in it's

    asked by jontre
  158. Math

    Which of the following could represent a function having the given properties? 1)increasing slope for x

    asked by Hannah
  159. English

    I need a topic sentence that DOES NOT include factual information about Greek mythology

    asked by Abby Williams
  160. world issues

    what is one major existing urban development in the world? regrading urbaization.

    asked by mya
  161. Math

    Compute the maximum product for two positive numbers x and y with the property that the sum of the first plus five times the second is 5000. 1) Indicate the objective equation 2) Indicate the constraint equation 3) Rewrite the objective equation in terms

    asked by Hannah
  162. Science

    Classify each of the eight living things listed below into one of the two groups according to an important physical characteristic. Gorilla,Parrot,Snake, Earthworm,Jellyfish,sponge,fish,fly Group 1- Group 2- what characteristic did you use in you

    asked by Ivy
  163. Chemistry

    If a solution is made by mixing 50.0 moles of KOH to 3.4 kilograms of water, what is the solutions molality?

    asked by Samuel
  164. Chemistry

    If a solution is made by mixing 50.0 moles of KOH to 3.4 kilograms of water, what is the solutions molality?

    asked by Samuel
  165. Math

    “ y and z are integers greater than 1 5y is the square of a number 75yz is the cube of a number. The smallest value for y + z is = ?”

    asked by cherryl
  166. Yr 10 English - UPDATED

    HEY guys! I need to majorly cut down on this piece of writing as i've only got 15 mins to write my piece of journal entry so I need EXTRA help and FAST!! :-( Imagine you are a 12 year old boy from Afghanistan wo is newly arrived in Australia. Write a diary

    asked by Shivi
  167. english

    how can a school fundraiser for a hospital help prepare me for life after high school please help and thank you

    asked by needhelp
  168. sociology

    what is " distraction hypothesis" ?

    asked by alya
  169. algebra 2

    Hi there, I feel so embarrassed that even after you give me the answer, i don't even know how to format it. I most definately need to learn this and quickly! if I expect to make my grade. I really apologize for my shortcomings. But, how is it that you

    asked by esther
  170. psychology

    Can someone help me understand this question? What are the psychological benefits of having and seeing my own childhood photos, can they those photos help me presently know that I am an adult?

    asked by Latisha
  171. science

    what are 3 ways bacteria affect your life?

    asked by pavleen
  172. microbiology

    Which are the two other pathways necessary to obtain enough energy to accomplish the task?

    asked by heidi
  173. cheerleading

    what is tumbling in cheerleading?

    asked by alanaR.
  174. career planning

    How attending a christian college help you achieve your goal to become pharmacist.

    asked by johnny
  175. Math

    u x 6 2/3=20

    asked by dan
  176. Maths literacy

    Write 78/115 as a decimal fraction

    asked by Joel
  177. algebra2/trig

    for what are value of k are the roots of 3x^2-6x+k=0 equal?

    asked by jackie
  178. algebra2/trig

    the length of a rectangle is 2x+4/(x^2-9) and its width is 3/(x-3). express the perimeter of the rectangle as a single fraction in simplest form.

    asked by jackie
  179. SOCIAL STUDIES

    DID THE THE CIVIL WAR BEGIN BEFORE THE THE AMERICAN SPANISH WAR

    asked by MARY
  180. science

    the plant disease that causes flower young leaves and stems to die quickly is called ____________.

    asked by pavleen
  181. SOCIAL STUDIES

    I cant believe i don't know this.my quistion is where is Cuba.

    asked by NYOMY
  182. science

    foods that are canned are cooked at high temperatures and then placed in airtight containers what efffect do these action have on the food

    asked by pavleen
  183. math 117

    simplify by factoring sqrt1575to the 4th sorry not sure how to type it out right

    asked by scott
  184. english

    clutced her notebook in the other hand as though it were a flyswatter

    asked by diana
  185. english

    clutced her notebook in the other hand as though it were a flyswatter is this a similie?

    asked by diana
  186. sociology

    what is digital device

    asked by alya
  187. english

    can i know how to paraphrase : 1) fresh and dried cherries are one of the only natural food sources of melatonin, the chemical that controls the body`s internal clock to regulate sleep. researches who tested tart cherries and found high levels of melatonin

    asked by alya
  188. maths

    k(t)==3-4^t/sin(4)t

    asked by emma
  189. math

    9(x-5)=4x-5

    asked by pavleen
  190. socialstudies

    what does a peninsula

    asked by esha