Questions Asked on
February 23, 2012

  1. Stats

    a coin is tossed twice, or until the first "tails" appears, whichever comes first. which of the following is the sample space for this random experiment? A, !@#$%^&) B. S=(T, HT, HH) C. S=(T, TT)

    asked by Justin
  2. micro

    hi, i need some help with my econ homework. i know what the law is, basically that more isn't always better. i just need to know how to tell if it applies to a labor equation. my problem goes like this. !@#$%^&,L) = K + 10L, write expressions for marginal

    asked by saya
  3. Geometr

    Determin the distance b/w a(4,3)and(8,12)b(2,1)and(2,-9)c(-1,-5)ana(2,-3)

    asked by Mathes
  4. Geometr

    Determin the distance b/w a(4,3)and(8,12)b(2,1)and(2,-9)c(-1,-5)ana(2,-3)

    asked by Mathes
  5. geometry

    Find the lateral area of a right triangular prism with an equilateralbase length of 5cm and height of 10cm.

    asked by Piggy
  6. geometry

    The base of a pyramid is a square. The perimeter of the base is 20ft, and the surface area of the pyramid is 65ft^2. Find the slant height of the pyramid.

    asked by Piggy
  7. geometry

    Find the ratio of surface area to volume for a cube with a volume of 64 in^3.

    asked by Piggy
  8. Recheck-Essay

    By studying in the USA, I believe that I am not only getting an internationally recognized education, but also a thrifty one. My decision to study here will help me become independent. In addition, the money I save by studying here will eventually help me

    asked by Hero
  9. Physics

    A 0.168kg hockey puck slides at 11.4m/s. what is the work needed to stop the puck?

    asked by Sheetal
  10. physics

    A 50 gram ball enters a a pendulum with mass 200 g. The pair then swings up to a height of 10 cm. Find the velocity at which the pair move immediately after the collision. Your answer is incorrect. 1.4 m/s Find the initial velocity of the ball before the

    asked by brett
  11. physics

    A spring S of force constant k=100 N/m. is fixed to the base of a 30 degree incline.A mass m=50g. is held against the free end of the spring,so that the spring is compressed by 0.1 metre.If the mass is now released,calculate the distance travelled by the

    asked by anil jha
  12. math

    i have 30 coins made up of 5c and 20c pieces that total $3.45. how many of each do i have?????

    asked by maria
  13. english

    One of your aliens looks down and becomes very confused, so you tell him that there is a game going on

    asked by luke
  14. english

    Critical thinking: alien tour guide

    asked by luke
  15. physics

    A force of 2 kg weight acts on a body of mass 4.9 kg .Find the acceleration produced.

    asked by anurag
  16. physics

    A force of 2 kg weight acts on a body of mass 4.9 kg .Find the acceleration produced.

    asked by anurag
  17. physics

    A force of 2 kg weight acts on a body of mass 4.9 kg .Find the acceleration produced.How far will a body move in 2 seconds

    asked by anurag
  18. physics

    A force of a 2 kg weight acts on a body of mass 4.9 kg .Find the acceleration produced.How far will the body move in 2 seconds ?

    asked by Anurag
  19. calculus

    Evaluate the integral S x/(sqrt(3x-1))dx Use U-Substitution method.

    asked by John
  20. science

    balance H3PO4 plus KOH produce K2HPO4 plus H20 and give the name of it

    asked by roxie
  21. chemistry

    A hydrocarbon,in volume of 25 L at 400K and a pressure of 3.40 atm reacts in an excess of oxygen to give 47.4G and 231.6g CO2.Determine the molecular formula for the compound?

    asked by Silvester
  22. computer science

    Class scores: Write a program that calculates the total grade for N classroom exercises as a percentage. The user should input the value for N followed by each of the N scores and totals. Calculate the overall percentage (sum of the total points earned

    asked by Abby
  23. programming

    Ancient square root algorithm. The Babylonian algorithm to compute the square root of a number n is as follows:      1. Make a guess at the answer (you can pick n/2 as your initial guess).      2. Compute r = n / guess      3. Set guess =

    asked by aymee
  24. writting a program

    Speed of Sound. Sound travels through air as a result of collisions between the molecules in the air. The temperature of the air affects the speed of the molecules, which in turn affects the speed of sound. The velocity of sound in dry air can be

    asked by sarah
  25. math

    The ratio of zinc and copper in an alloy is 7:9. if the weight of copper in the alloy is 11.7 kg, find the weight of zinc in alloy?

    asked by swagnik
  26. math

    find x in each of the followig. 1)12:x= x:48 2)12:21::8:x Q2)find the mean proportional between: 1)12 and 27 2) 5 and 45 3) 4 and 9

    asked by swagnik
  27. Bio II AP

    Do you guys know of any online study guides about joints that I could print out? Thanks

    asked by Rebekah
  28. math

    construct an equilateral triangle ABC in which altitude drawn from opposite vertex is 3.5 cm.Also construct a triangle APR similar to a triangle such that each side of the triangle APR is 1.5 times that of the corresponding side of triangle ABC.

    asked by upasna
  29. Math solid mensurations

    rhombus ABCD has diagonals that intersect at E. DF is drawn perpendicular to DC and AD at D. With AB = 10cm,

    asked by Anonymous
  30. physics

    A speeder traveling at 38 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 2.03 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder?

    asked by Anonymous
  31. algebra

    The sum of an uncirculated 'Mint-65 '1950 jefferson nickkle mintedd in Denver is 4/3 the value of a 1945 nickle minted in philadephia in similar condition. Togather the total of two coinsis$35. What is the value of each coin?

    asked by debbie
  32. physics

    A passenger in a helicopter traveling upwards at 20 m/s accidentally drops a package out the window. If it takes 15 seconds to reach the ground, how high to the nearest meter was the helicopter when the package was dropped?

    asked by Anonymous
  33. american goverment

    One function that both the House and Senate share is to? . Somebody can tell me where can I found this?? Thanks

    asked by lalt
  34. 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
  35. physics

    A passenger in a helicopter traveling upwards at 20 m/s accidentally drops a package out the window. If it takes 15 seconds to reach the ground, how high to the nearest meter was the helicopter when the package was dropped?

    asked by Anonymous
  36. Psychology

    Sally is driving her car and talking on her cell phone. Statistically this behavior has been shown to be quite dangerous and contributes to many automobile accidents. In performing these two tasks simultaneously, Sally uses: a. conscious cognitive

    asked by Oronde
  37. psychology

    Henry is an avid animal lover. He always takes in strays and donates his local animal shelter. One night he goes to an Atlanta Braves baseball game where hundreds of people are walking past the hotdog vendors. Henry sees a young, pregnant homeless,

    asked by Oronde
  38. american goverment

    The system of checks and balances allows the Supreme Court to A. veto legislation passed in Congress. B. nominate candidates for congressional seats. C. declare acts of the president unconstitutional. D. select judges to serve in the federal court system.

    asked by lalt
  39. psychology

    A worker who recently switched from day to swing shift has become less efficient and more irritable. He is also making more mistakes than he did on the day shift. The cause of this worker's problem is likely to be: a. sleep disorders due to change in shift

    asked by Terry
  40. psychology

    Activation-synthesis dream theory purports that dreams rersult from the brain's effort to make sense of: a. the day's activities and experiences b. problems the person has not yet tresolved c. our external world d. spontaneously firing neurons during REM

    asked by Terry
  41. math

    I need help solve the equation by fractions 8/(21-y) = 12/(y+19) I think the answer is y = 5, i just need to know how to do work out. i done some solution like this first multiply by(21-y)(y+19)(assuming that y = 21 and y = 19: (21-y)(y+19)8/(21-y) =

    asked by Anonymous
  42. maths

    the radius of a circle is 8cm and the length of one of its chords is 12cm. find the distance of the chord from the centre

    asked by sushma
  43. accounting

    Your review of the general ledger of Home Interior Improvements and Designs Company reveals a beginning capital balance of $25,000. You also review the general journal for the accounting period and find the closing entries shown on the next page.Prepare a

    asked by Colleen
  44. accounting

    Wilson Reed, the bookkeeper for Home Interior Improvements and Designs Company, has just finished posting the closing entries for the year to the ledger. He is concerned about the following balances: Capital account balance in the general ledger: $ 48,550

    asked by Colleen
  45. trig

    sin(x) = 8/17 and 90 degrees < x < 180 degrees then find cos2(x)

    asked by Harley
  46. life orientation

    substance abuse of both legal and illegal drugs among the youth

    asked by ntshembo
  47. chemistry

    What mass of potassium nitrate would you have to heat in order to produce 1.00dm of oxygen at rtp?

    asked by Nicole
  48. Chemistry

    When 3.2 moles of Al react with excess HNO3 at STP, How many liters of H2 are formed

    asked by Amber
  49. English Lit-Check please-thank you

    We're reading "The World is Too Much with Us by Wordsworth. We have some questions to interpret-I understand about Wordsworth and his relationship and philosophy concerning nature but I'm just not sure after further research the answer to these two

    asked by Thomas S.
  50. Geology

    I don't really understand this queston...Why Al ore producing and Al metal producing countries are often not the same?... thanks..

    asked by Rose
  51. Maths

    Dear Genius, Good day! The number of apples in a basket is between 60 and 120. If i put these apples into bags of 5, there will be a remainder of 1 apple. If i put these apples into bags of 8, there will be a remainder of 6 apples. Find the total number of

    asked by Surya
  52. physics--please help

    When only the front wheels of an automobile are on a platform scale, the scale balances at 7.8 kN; when only the rear wheels are on the scale, it balances at 5.5 kN. What is the weight of the automobile? How far is its center of mass behind the front axle?

    asked by sara
  53. Maths

    The Sentosa High School's telephone number is an eight digit number. The sum of the two numbers formed from the first three digits and the last five digits respectively 66558. The sum of two numbers formed from the first five digits and the last three

    asked by Surya
  54. English Comp

    I need help on how to write a compare and contrast essay on the topic of pre-school

    asked by Anonymous
  55. physics

    An object that has kinetic energy must have which of the following?A) momentumB)acceleration c all of these d none of these

    asked by britches
  56. Calculus

    find f'(x) if f(x)=x^2e^(x(3x-1)^3

    asked by Johnathan
  57. Calculus

    find f'(x) if f(x)= (cosx)^sinx

    asked by angie
  58. Macroeconomic

    Suppose we establish a $10,000 fine for water pollution. Would some companies still find that pollution was economical? Under what conditions?

    asked by Karen
  59. math

    Which set of dimensions would produce a right triangle?

    asked by megna
  60. maths

    multiply out (2x-3) squared eg small 2

    asked by sarah
  61. trig

    does sec(x)tan(x)*tan(x)=[sec(x)(tan^2)x]

    asked by Drew
  62. English Comp

    Compare and Contrast Essay for Preschool  Pre-school (Pre-K) and Kindergarten, on an equal level; when it comes to the educational standards of teaching. Preschool allows student an opportunity for additional educational preparations, so that the first

    asked by Anonymous
  63. chemistry

    i need to prepare 25.00 mL of a solution of a certain vitamin at a concentration of 2.00 mg/ml. how do i find the weight of the vitamin needed in the solution

    asked by marla
  64. Math

    Create a graph from this research In a recent article, the author states that 71% of adults do not use sunscreen. Although 71% is a large percentage, explain why it could be misleading.

    asked by Linda
  65. Physical Education

    1. Aerobic activities can be done for an extended period of time and supply oxygen to your muscles. Such activities help develop _______________________. 2. You can change your _______________________ by exercising regularly and eating healthfully. 3. The

    asked by Maddie
  66. Physical Science: PLEASE HELP!!!!!

    A wooden raft 3 m long x 2 m wide x 20 cm thick floats on a freshwater lake. A) Determine the buoyant force? B) If the raft itself has a mass of 600 kg, how many 65-kg people could it support?

    asked by Kendra
  67. Chemistry

    An atmospheric scientist interested in how NO is converted into NO2 in urban atmospheres carries out two experiments to measure the rate of this reaction. The data are tabulated below. A: [NO]0 = 9.63 × 10-3 M, [O2]0 = 4.1 × 10-4 M t(s)

    asked by help
  68. math

    find the percent of decrease. round to the nearest tenth if necessary from 49 cm to 34 cm

    asked by jasmine
  69. English

    Writeacher, Can you please check these sentences. I urgently need to know the difference in meaning among the various sentences. 1) She often makes herself pasta. (= She often makes pasta for herself) She often makes pasta herself. (= She often makes pasta

    asked by Henry2
  70. scientist

    What is the kinestic energy of a bullet of 22kg fire from a gun with a speed of 6m`s

    asked by Bright
  71. COMM215

    Can you tell me if everything is correct? Final Grammar Test Part I: True or False 1. The following word group is a FRAGMENT: That movie, one of my favorites. _X_True __False 2. The following word group is a FRAGMENT: The local baseball team, needing a

    asked by Al
  72. reading skills

    ) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventh-grade science, I have some experience with the faces

    asked by Shatavia
  73. Math

    Pls help .[1] Solve the eguation 4*=28. [2] change 1/20 to decimal [3] change 60% to a common fraction . Pls i need the solving thank you

    asked by Bright
  74. algorithms

    in Table E [N] are the names of the students, in Table L [M] are the names of the subjects, in Table T [N, M] are the grades of students for each subject. to find the student with the highest grade in the class "Math" (name of the subject given by keypad)

    asked by Elton Xhafa
  75. American History

    Which of the following was John Rolfe's chief contribution to Virginia's economy A. His alliance with the Powhatan through his marriage to Pocahontas B. His invention of a better way to grow short-staple cotton C. His innovations in cultivating tobacco D.

    asked by Jaz
  76. tax intro

    Jeanette owns a rental property that she used for 20 days and rented for 80 days. The rental income was $10,000 and expenses included the following; mortgage interest $2,500; property tax $1,500; insurance and repairs $1,000 and depreciation $2,000.

    asked by Andy
  77. Algebra

    A club with 35 members is to select five officers (president, vice president, secretary, treasurer, and historian). In how many ways can this be done?

    asked by Matt
  78. chemistry

    3. Answer the following questions: For each question show a balanced chemical equation and show all calculation for full credit. a. Assume that you had 100 nuts (N) and 75 bolts (B). How many NB molecules could you make by screwing one nut onto each bolt?

    asked by Josh
  79. statistics

    A secretary can type 12 names per 60 secods in an average classroom how long will it take her to type all the names

    asked by Natasha
  80. statistics

    Microfracture knee surgery has a 75% chance of success on patients with degenerative knees. The surgery is performed on 5 patients. Find the probability of the surgery being successful on 3 or 4 patients?

    asked by Anonymous
  81. algebra

    6) Write with positive exponents: [ 3-3 a-2 b5 c-3 d-4]

    asked by lee
  82. algebra

    6) Write with positive exponents: [ 3-3 a-2 b5 c-3 d-4]

    asked by lee
  83. Chemistry

    Ag+2 is generated in a lab. This is an unusual oxidation state for AG. Write the ground state electronic configuration of Ag+2 using the noble gas shortcut.

    asked by Drake
  84. Chemistry

    There is a large [Cr2O7]-2 absorbance observed at 360 nm. Why can this wavelength not be used instead of the smaller absorbance at 440 nm?

    asked by ella
  85. Western Civilization

    How did the intellectual theories of Charles Darwin, Karl Marx, Sigmund Freud and others signal a revolution in modern thought?

    asked by Adam
  86. chemistry

    One purpose of adding KIO4 is to prevent the permanganate ion from being slowly reduced to Mn+2 by H2O. Write a balanced redox equation for the reduction of permanganate ion to Mn+2 by water in acid solution.

    asked by ella
  87. Chemistry

    If 30% of a sample of radioactive isotope decays in 24 hrs, what is the half-life? How do i know which order to use? and do I convert hr to mins or seconds? Pls help for my exam tomorrrow

    asked by tina
  88. Proof! Help!

    If k vertices has kC2 edges, show that (k+1) vertices has (k+1) C 2 edges

    asked by Samantha
  89. math

    I have 432 cards that are three and a half inches long if I put them end to end how many feet long is the line of cards

    asked by Emily
  90. PHYSICS

    A 25,000 kilogram train is traveling down a track at 20 meters per second. A cow wanders onto the tracks 75 meters ahead of the train, causing the conductor to slam on the brakes. The rain skids to a stop. If the brakes can provide 62,500 Newtons of

    asked by GRISSELL
  91. PHYSICS

    Consider a spring and block system k= 18 N/m x initial = o m x final = 0.08m Useing Hooke's law to calculate the force needed to stretch this spring 8 cm.

    asked by GRISSELL
  92. Algebra: Help Please

    For the given function, compute the missing values in the following table. f(x) = 8x i got the negatives wrong, but I know how to solve for it. Is there a reason it is wrong? -3: -1/512 -2: -1/64 -1: -1/8 (^These were wrong, but I don't know how to solve

    asked by Ann
  93. calculus

    Find an explicit expression for y' for the curve de fined by 3(x^2 + y^2)^2 = 100xy.

    asked by sarah
  94. calculus

    You operate a bakery. You buy cakes from a supplier who charges you $5 per cake. Government regulations dictate that you can only charge a price between $10 and $20 per cake. Your research shows that if you were to charge $x per cake, you would sell 125 -

    asked by sarah
  95. calculus

    How many horizontal tangent lines exit to the curve f(x) = x^cos(x)?

    asked by sarah
  96. physics

    What is the rotational speed of the minute hand on a clock? Convert from rad/s to rev/s

    asked by brett
  97. Math/Conics

    Find the vertex and focus of the parabola with the following equation: y = x2 + 6x + 5

    asked by tori
  98. Math/Conics

    Find the center, vertices, and foci of the ellipse with the following equation: x^2/9+y^2/16=1

    asked by tori
  99. math

    Tania is in charge of designing a school pennant for spirit week. She wants the base to be 3 1/2 feet and the height to be 6 1/2 feet. She has 20 square feet of paper available. Does she have enough paper? Explain.

    asked by Maria
  100. physics ( please help me)

    a block with a mass of 5.00 kg is moving at 8.00 m/s^-1 along a frictionless horizonal surface toward a spring with force constant k= 500 N/m^1 that is attached to a wall.find the maximum distance the spring is compressed. the spring has negligible mass.

    asked by taylor
  101. early childhood

    evolutionary psychology and behavior genetics: watson

    asked by jen
  102. physics ( please help me)

    A 2.00kg block is pushed against a spring with force constant k=400N(m^-1), compressing it 0.180m. The block is then released and moves along a frictionless horizontal surface and then up frictionless incline with slope angle 37.0degrees. a. What is the

    asked by taylor
  103. chemistry

    How much HCL would be needed to neutralize 250mL of 6 M NaOH (HCL = 1.5 M)?

    asked by Rachel
  104. physics ( please help me)

    A brick with a mass of 0.400kg is pressed against a vertical spring with force constant k=500 N(m^-1) such that the spring is compressed 0.200m. When the brick is released, how high does it rise from this position? (the brick and the spring are not

    asked by taylor
  105. Physics help please!!!

    Biomedical measurements show that the arms and hands together typically make up 13.0% of a person's mass, while the legs and feet together account for 37.0% . For a rough (but reasonable) calculation, we can model the arms and legs as thin uniform bars

    asked by john
  106. help

    Jeanette owns a rental property that she used for 20 days and rented for 80 days. The rental income was $10,000 and expenses included the following; mortgage interest $2,500; property tax $1,500; insurance and repairs $1,000 and depreciation $2,000.

    asked by Andy
  107. physics

    A man pushes on a piano with mass 200 {\rm kg} so that it slides at constant velocity down a ramp that is inclined at 10.5^\circ above the horizontal floor. Neglect any friction acting on the piano.

    asked by lkn
  108. physics

    Two point charges, q1 and q2, are placed 0.30 m apart on the x-axis, as shown in the figure above. Charge q1 has a value of –3.0 x 10–9 C. The net electric field at point P is zero Q: Calculate the magnitude of charge q2. Q: Calculate the magnitude of

    asked by Kayberlynn
  109. geometry

    A piece of board 8yd by 6yd is cut into squares.The perimeter of each square is 8yd.How many squares are there?

    asked by Clemence
  110. Economics

    B. Suppose there are two goods, Cloth and Food, and two factors of production, labour and capital. Suppose that the production function for each good is "homothetic". Put capital K in the vertical axis and labour L in the horizontal axis. For Cloth

    asked by John
  111. math

    order from least to greatest 41.2 41.42 40.12

    asked by ciara
  112. Anatomy

    I need a site that has a labled picture of what parts are found in the knee joint when disecting a fetal pig

    asked by Sam
  113. math

    2 thirds of 60 is greater than 1 thirds of 120? True or false and explain your reasoning. :) Thank you, Bella Yang

    asked by Bella
  114. bio II anatomy

    Do you guys know of any websites where they have a fetal pigs (or just a pigs) knee disected and labled???

    asked by Rebekah
  115. physics

    Cliff and Will are carrying a uniform 2.0m board of mass 69kg. Will is supporting the board at the end while cliff is 0.6m from the other end as shown in the following figure. Cliff has attached his lunch to his end of the board, and the tension in the

    asked by brett
  116. English

    Could you please check these phrasal verbs i'm unsure of? thank you. 1) They are cutting off the water/gas supply tomorrow. The chairman cut him out of the discussion. 2) The light went off (out is possible?) all of a sudden. Can you switch off /put out

    asked by Henry2
  117. Math

    1 fourths of 32 = 1 over 2 of 16? True or false? and explain.

    asked by Bella
  118. algebra 1

    how do i write 9.8 multiplied by 10 to the forth power into standard notation

    asked by ikiya
  119. Physics

    Givent the initial velocity of the car, the driver's reaction time, and the coefficient of friction,find the total distance required far a car to stop.

    asked by TC
  120. math

    if a man walked 1/12th of a mile one day 2/12ths of a mile the next day and 3/12ths of a mile the next day on what day did he walk a complete mile

    asked by dave
  121. science

    List three thing that make friction?

    asked by Bella
  122. Computer Programming (XML)

    Using the employees.xml file below, create a DTD file “employee.dtd” based on “employees.xml”. Create a schema files “employee.xsd” based on “employees.xml”. Create a html page “employees.html”

    asked by Lisa
  123. science

    True or false: You can see friction?

    asked by Bella
  124. science

    What two things do you need to know to find an objects velocity?

    asked by Bella
  125. science

    True or false: Everything that moves has velocity?

    asked by Bella
  126. science

    a *blank* is a tool that measure speed in an vehicle.

    asked by Bella
  127. Math

    If a recipe calls for 6 cups of juice for each of the eight punch bowls, how many gallons of juice will be needed?

    asked by Astrid
  128. English

    I am looking for the dependent clauses in this sentence. 1. Because nests of baby dinosaurs have been found, scientists believe that these ancient creatures cared for their young for some time. Scientists believe is the independent clause. Are the other

    asked by Kelley
  129. English Lit-Writeteacher please check if possible

    I really appreciate you helping me earlier today but I have another poem by Wordsworth-Tintern Abbey 1.According to these lines, compared to his youth, Wordsworth see himself now as: a.More responsible b.Less happy c.More aware of the world's problems

    asked by Thomas S.
  130. Physics

    Biomedical measurements show that the arms and hands together typically make up 13.0% of a person's mass, while the legs and feet together account for 37.0% . For a rough (but reasonable) calculation, we can model the arms and legs as thin uniform bars

    asked by john
  131. Math help needed

    How many capsules , each containing 250mg, are needed to provide 50mg/kg/day for 10 days for a person weighing 176 lbs?

    asked by Vicki
  132. college alg

    A meat market has ground beef that is 40% fat and extra lean ground beef that is 15% fat. How many pounds of each(ground beef and extra lean) must be together to get total of 50 pounds of "lean" ground beef that is 25% fat?

    asked by mercy
  133. CHEMISTRY

    The following reaction represents the decomposition of hydrogen peroxide: Balanced equation: 2H2O2 -> O2 + 2H2O How many moles of oxygen are produced from the decomposition of 3.4g of hydrogen peroxide? How many molecules of O2 are produced? For the second

    asked by Emma
  134. English

    How should this be written to correct the dangling modifier? The cost of production can be reduced by purchasing an ultra-pure water system.

    asked by Mariah
  135. algebra

    A shipping clerk wishes to determine the weights of each of the 4 boxes. Each box weighs a different integer amount less than 70 kg. Unfortunately, the only scales available measure weights in excess of 70 kg. The clerk therefore decides to weigh the boxes

    asked by Jackie
  136. Geometry

    True or False: An angle of depression can never be more than 90˚.

    asked by Clare
  137. Geometry

    Marion is observing the launch of a space shuttle from the command center. When she first sees the shuttle, the angle of elevation to it is 16°. Later, the angle of elevation is 74°. If the command center is 1 mi from the launch pad, how far did the

    asked by Clare
  138. math

    a student misses 2 days of school out of 25 days. what is the probability that the student will be absent on the 26th day of school

    asked by faith
  139. Physics

    Laser Pointers emit light waves whose wavelength is 670 nm. What is the frequency for this light?

    asked by Charles
  140. math

    The table shows the total number of emails that the Wright family received this morning. Mr.Wright 7 emails Mrs.Wright 8 emails Cole 3 emails Trinity 3 emails If the family receives 7 more emails,which is the most reasonable prediction of the number of

    asked by Andrew
  141. Algebra

    There are 37 students in an algebra class. there are 9 more girls than boys. how many boys and how many girls are in the class? I have to use systems of equations to solve.

    asked by Jennifer
  142. physics

    5. An object that has kinetic energy must have ____________________. A) momentum. B) acceleration. C) a force applied to it. D) All of these. E) None of these.

    asked by britches
  143. College Physics

    The lines in a grating are uniformly spaced at 1530 nm. Calculate the angular separation of the second order bright fringes between light of wavelength 600nm and 603.11nm. Answer in __mrad

    asked by Annie
  144. College Physics

    A Fraunhofer diffration pattern is produced on a screen 210cm from a single slit. The distance from the center of the central maximum to the first-order maximum is 7560 times the wavelength (lambda). Calculate slit width. Answer in __m

    asked by Annie
  145. math

    Cierra arrived at her dance at 9:05. She waited in the classroom for 10 minutes and them the class began. If the class ended 1 hour 10 minutes later,at what time did the class end? A.10:15 B.10:20 C.10:25 D.10:30 C?

    asked by Andrew
  146. Math

    x+y=20 x=y-4 Please help me solve each system of equations and show your work thanks

    asked by Haylie
  147. math

    The triangle above has side lengths of 18 mm and 26 mm. Which set of dimensions would produce a similar figure?

    asked by Anonymous
  148. English

    Writeacher, could you please check my post, I need to prepare for tomorrow? Thank you!! Could you please check these phrasal verbs i'm unsure of? thank you. 1) They are cutting off the water/gas supply tomorrow. The chairman cut him out of the discussion.

    asked by Henry2
  149. physics

    Part A A 3.00 kgblob of putty moving at 2.4 m/s slams into a 4.80 kg blob of putty at rest. Calculate the speed of the two stuck-together blobs of putty immediately after colliding.

    asked by britches
  150. college algebra

    given f(x)=4x-5, g(x)= x+5 over 4 Find (fog)(x). are these inverse functions?

    asked by missy
  151. math

    a deck surrounds a pool and the deck area is 592 square meters and deck width is 4 m. the pool dimension =(w + 4)(w + 14) l = w+10. what does w =?

    asked by lynn
  152. college algebra

    Find the maximum or minimum for f(x)=3x^2+x+1

    asked by missy
  153. computers

    a file with the extension of .bmp is an audio file? true or false? I say true

    asked by Elizabeth
  154. physics

    Consider an ideal pulley system. Pull one end of a rope downward by 1 meter with 50 N of force, and you'll lift a 200-N load a distance of ____________________. A) 1 meter. B) 0.5 meter. C) 0.25 meter. D) None of these.

    asked by britches
  155. prealgebra

    what is the answer to 9*1000 + 1890

    asked by vick
  156. chemistry

    A Solute That Removes Hydrogen Ions from Solution

    asked by ivy
  157. pre-algebra

    When designing a pattern, Erica rotated a triangle 90 degrees about the midpoint of one side to create a second triangle. If the area of the original triangle is 48 square inches, what is the area of the second triangle?

    asked by Lola
  158. math

    The ratio of children to adults in a group is 2 to 5. There are 42 people in the group. How many people in the group are children?

    asked by Denise
  159. English

    Will just taking out the "it" make this sentence correct? The disease is typified by a delay in motor development, by self-destructive behavior, and it leads to death.

    asked by Mariah
  160. physics

    In the reaction U gives Th + He 6.88*10-13 J energy are released as the kinetic energies of the products. If the ratios of the masses Th to He is 2.4:4 find the kinetic energy of the alpha particle

    asked by eva
  161. principles of physics

    Consider an ideal pulley system. Pull one end of a rope downward by 1 meter with 50 N of force, and you'll lift a 200-N load a distance of ____________________. A) 1 meter. Feedback: Incorrect! B) 0.5 meter. C) 0.25 meter. D) None of these.

    asked by jim
  162. Physics

    In the reaction U gives Th + He 6.88*10-13 J energy are released as the kinetic energies of the products. If the ratios of the masses Th to He is 234:4 find the kinetic energy of the alpha particle

    asked by eva
  163. physics

    A professor drives off with his car (mass 800 kg), but forgot to take his coffee mug (mass 0.35 kg) off the roof. The coefficient of static friction between the mug and the roof is 1.1, and the coefficient of kinetic friction is 0.5. What is the maximum

    asked by Luke
  164. Algebra 1

    What is the entire balanced owed for a loan of $750 at a simple interest rate of 4% per year for 1.5 years? I just don't really know if the $750 is the interest or principle...

    asked by Dayana
  165. college algebra

    Find the vertex for f(x)=-5x^2-6x=3

    asked by melissa
  166. math

    Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per hour for the frst part of the trip and 80 kilometers per hour for the secound part. If the total trip took 6 hours, how long was she traveling at 80 kilometers per hour?

    asked by mercy
  167. physics

    A 68.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.700 and 0.450, respectively. (a) What horizontal pushing force is required to just start the crate moving?

    asked by dee
  168. math

    two less than three times a number is equal to 16. what is the number?

    asked by taylor
  169. math

    the picnic committee dicided that the charge for this year's fundraiser picnic is $10 per family puls %2 for each person in the family. determine the number of people in a family that pays $36?

    asked by taylor
  170. Chemistry

    If a hydrate was found to contain 12% water and the original weight of the sample was 30g, what will be the final weight of the anhydrous sample?

    asked by Ashley
  171. English

    Does Victor have an obligation to the monster? Use evidence from Chapters 9-14 of Volume 2.

    asked by Katie
  172. 7th Grade Math

    You are pouring water from a cylindrical can is 7 cm in diameter and 10 cm high into a rectangular pan that is 20 cm in width, 9 cm in length and 14 cm deep. How many cans, can you pour into the pan? Use 22/7 for pi.

    asked by Erikka
  173. READING

    UNDERLINE THE VERB OR VERB GROUP IN EACH SENTENCE. THEN WRITE A NEW SENTENCE USING THE VERB OR VERB GROUP YOU UNDERLINED. BRAN, A THIN BROWN SKIN, COVERS RICE. I KNOW (COVERS) IS SUPPOSED TO BE UNDERLINED, BUT I DON'T GET WHAT IT MEANS WHEN IT SAYS "THEN

    asked by Celest
  174. Math

    Katie is 3/5 of the way to Brianna's house. Larry is 7/10 of the way to Brianna's house. How much closer to Brianna's house is Larry?

    asked by Heaven
  175. math

    jeremy has 19 coins of 2 different values. the total value of coins is 1$ what are the coins and how many of each coins does he have

    asked by sam
  176. math

    this years funderaiser picnc is $10 per person plus $2 for each person in the family. determine the number of people in a family that pays $36?

    asked by taylor
  177. math

    the mason family went to the amusement park. they spent 56.00$ on tickets. if adults cost 12$ and kids cost 5$ how many adults and children went to the park?

    asked by jazzlyn
  178. math

    people flock to andys lemonade stand because each cup of lemonade is only 35 cents. sometimes customers buy several cups of lemonade.Andy and his helpers have to figure out how much to charge each time someone buys more than 1 cup of lemonade. what could

    asked by skye
  179. geometry

    if a painting has a perimeter of 36 in, and the length of the picture is 8 inches. then what is the width?

    asked by john
  180. math

    If there is an square 8 by 8, how many 4 sq ft tiles would i need?

    asked by nevaeh
  181. Math

    can x squared - 1 be factored?

    asked by LA
  182. math

    -12d - 9= 15d+9

    asked by Jamel
  183. to Ms.Sue

    Thank you so much. I bet when I'm in college I will still need your help!

    asked by Celest
  184. English

    Correct this: The virus may cause AIDS, cancer, or even kill. Do I need to add a word in front of cancer? Would this be correct? The virus may cause AIDS, produce cancer, or even kill.

    asked by Mariah
  185. PHYSICS

    A 25,000 kilogram train is traveling down a track at 20 meters per second. A cow wanders onto the tracks 75 meters ahead of the train, causing the conductor to slam on the brakes. The rain skids to a stop. If the brakes can provide 62,500 Newtons of

    asked by GRISSELL
  186. PHYSICS

    A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance. Thank you

    asked by GRISSELL
  187. math

    write a problem you could represent with 3n-7=14.

    asked by taylor
  188. PHYSICS

    a 1500kg sports car accelerates from 0 to 30 m/s in 8 seconds. Whaat is the power of its engine?

    asked by GRISSELL
  189. Easy 4th Grade Math

    What are things that have symmetry in a house?

    asked by Kristiana
  190. calculus

    I'm trying to find the intersection point of y=x-2 and y=sqrt(x). I tried letting both equations equal each other but kept coming up with the points (4,1) and (1,4) however these aren't right as the answer should be (4,2) but I am unable to get this

    asked by Lindsay
  191. English

    This sentence contains a dangling modifier. As a Principal Technical Editor/Writer for Alpha Communications, with over 12 years of experience, the internship would provide an opportunity to work with technical documents outside my familiar "comfort zone"

    asked by Mariah
  192. AJ

    How do the three susytems law enforcemnt, cout, and corrections interact with each other?

    asked by Nancy
  193. math

    (4m-20)(7m)/(5m-25)(28)

    asked by josh
  194. AP CHEMISTRY

    Write the formula for each of the following compounds, being sure to use brackets to indicate the coordination sphere. A) bis(bipyridyl)cadmium(II) chloride B) potassium tetrabromo(ortho-phenanthroline)- cobaltate(III)

    asked by JIM
  195. ChemHelp

    Chem Help! Limiting and excess reagent? Identify the limiting and excess reagent for each of the following scenarios involving the formation of silicone dioxide, SiO2. Please explain!!! Thank you! Si + O2 --> SiO2 a. 2 atoms of silicone and 2 molecules of

    asked by Hannah
  196. ALGEBRA

    I went to the car show this weekend and that is what I saw: Every red car was a sport car, but I found it odd that half of all the blue were sports cars. A salesman told me that half of all the sports car were red. I counted 40 blue cars and 30 red cars.

    asked by el chave del ocho
  197. physics

    At 1:00 p.m. a car, traveling at a constant velocity of 86 km/h toward the west, is 22 km to the west of our school. How far from the school will it be at 3:30 p.m.? Answer in units of k

    asked by Rachel
  198. Science

    A blue-eyed man, both of whose parents were brown-eyed, marries a brown-eyed woman whose father was blue-eyed and whose mother was brown-eyed. This man and woman have a blue-eyed child. What are the genotypes of all these individuals?

    asked by Rebecca
  199. chem

    Consider the reaction 4KO2(s) + 2CO2(g) ! 2K2CO3(s) + 3O2(g) . How much KO2 is needed to react with 75.0 L of carbon dioxide at STP?

    asked by Stormie
  200. GeOmEtRy!!!

    what are the solutions to the following equation 3x^2+5=80?

    asked by VERONICA
  201. Math

    factor x squared - x - 12

    asked by Steph
  202. Physics

    A planet has two satellite moons. Moon X has an orbital period of 2.13 days. Moon Y has an orbital period of about 3.53 days. Both moons have nearly circular orbits. Use Kepler's third law to find the distance of each satellite from the planet's center.

    asked by Angelina
  203. algerbra

    the length of a rectangle is one foot more than twice its width. If all sides were increased by 7feet the perimeter of the new triangle would be 122 ft. find the new dimensions of the new rectangle

    asked by jessica
  204. GeOmEtRy!!!

    a triangle has an area of 35 square inches. The base of the triangle is 4 inches less than twice the height. What is the length of the base of the triangle?

    asked by VERONICA
  205. Geometery

    2. Use only a compass and a straightedge to construct each of the following, if possible: a. A segment congruent to and an angle congruent to ÚACB CB

    asked by Darcy
  206. chemistry

    in the equation mg+2hcl-->mgcl2+h2, what mass of the hcl is consumed by the reaction of 2.50 mol of magnesium

    asked by Esla
  207. math

    You want to determine the height of your school. The building casts a 6 foot shadow at the same time you cast a 15 inch shadow. If you are 5 feet tall how tall is the building?

    asked by helen
  208. Physics

    The potetial energy of a spring is 0.25 J when it is compressed 0.05m to the left of the equilibrium position. At this point it comes to its leftmost position. What is its kinetic energy when it returns to its equilibrium point? a. zero b. 0.25 J and the

    asked by Cat
  209. physics

    The distance between two successive crests of a certain transverse wave is 1.05 m. Eight crests pass a given point along the direction of travel every 17.9 s.

    asked by crystal
  210. calculus

    When region R is revolved about the line y=c, the resultant solid has a volume of 720*3.14. Find all possible values of c.

    asked by Kristen
  211. Math

    The measure of two complementary angles are in the ratio 7:11. What is the measure of the smaller angle?

    asked by helen
  212. geometry

    the base of an isoscels triangle is 4x long. the altitude to the base is 3x cm long. Find the length of one other side of the triangle

    asked by sara
  213. GeOmEtRy!!!

    Which of the following expressions is equivalent to (4a^2b)^3(ab)^3? a. 64a^9b^6 b. 12a^7b^6 c. 64a^7b^9 d. 16a^6b^6

    asked by VERONICA
  214. geometry

    find the altitude of an equilateral triangle with side length twelve

    asked by sara
  215. Math

    Whatis the surface area of the right square pyramid in square meters? Dimensions: Base/length: 6 meters Slant height: 5 meters I know the formula is S.A.=1/2P "l"+B. I don't know what P or B is.....

    asked by Anonymous
  216. math

    a box will hold seven 3-pound bags of pears. how many boxes will be needed for 90 pounds of pears?

    asked by nicole
  217. CHEMISTRY

    Give the NAMES and FORMULAS for the following COVALENT (nonmetallic) compounds. 1. Sulfur hexafluoride 2. Tetraphosphorus heptasulfide 3. Silicon tetrachloride 4.Disulfur decafluroine moniodide 5. Iodine pentafluoride 6. Tetranitrogen trisulfide 7.

    asked by helen
  218. physics

    A 59.0-kg runner has a speed of 3.20 m/s at one instant during a long-distance event. (a) What is the runner's kinetic energy at this instant? KEi = J (b) If he doubles his speed to reach the finish line, by what factor does his kinetic energy change? KEf

    asked by Darcie
  219. MATH

    The measure of two complementary angles are in the ratio 7:11. What is the measure of the smaller angle? Would the correct answer be 35?

    asked by helen
  220. MATH word problem

    I have to answer the follwoing question: Jades mother was making curtains for the dining room. She use 37 3/4 yards of fabric for the curtain panels. 13 2/7 yards of fabric for the valance. and 6ft 2in. of cord for the tiebacks. HOW many yards of fabric

    asked by marko
  221. Calculus

    Foggy optics, inc. makes laboratory microscopes. setting up each production run costs $2500. Insurance costs, based on the average number of microscopes in the warehouse, amount to $20 per microscope per year. storage costs, based on the maximum number of

    asked by math
  222. CHEMISTRY

    Can someone tell me if I am getting these correct? Give formula for the following covalent compounds: 1. Sulfur hexafluoride-SF6 2. Tetraphosphorus heptasulfide-P4S7 3. Silicon tetrachloride-SiCl4 4.Disulfur decafluroine moniodide-S2F10I 5. Iodine

    asked by helen
  223. CHEMISTRY

    Can someone tell me if I am getting these correct? Give formula for the following covalent compounds: 1. Sulfur hexafluoride-SF6 2. Tetraphosphorus heptasulfide-P4S7 3. Silicon tetrachloride-SiCl4 4.Disulfur decafluroine moniodide-S2F10I 5. Iodine

    asked by helen
  224. English ms. sue

    ms. sue u please able to delete my other post where i talk about animoto site today i present it to class actually everyone really like i not want them searching up and come here.

    asked by Mohammad
  225. geography

    1. What is the capital of the Scandinavian nation whose eastern border is the Soviet Union? Helsinki, Finland 2. Which will have dawn first, eastern North America or eastern South America? Eastern South America 3. What is the capital of Idaho? Is it east

    asked by Reed
  226. GeOmEtRy!!!

    How many x-intercepts does the graph of y=x^2-4x+4?

    asked by VERONICA
  227. Calculus

    Evaluate this limit, if it exists: lim (7-x)squared - 9 / 4-x x->4

    asked by Labiba
  228. CHEMISTRY

    Give names of the following covalent (nonmetallic) compounds: S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H *The longer ones are the ones I need help on. The shorter ones such as the first one are ones I have completed and would like to make

    asked by helen
  229. Chemistry

    [OH] = 1.5 x 10^-13 , what is the [H3O] ? This is what I did. 1.0 x 10^-14 M / 1.5 x 10^-13 M = 1/15 or.066666 So what is the correct answer? Thank You

    asked by Misa
  230. GeOmEtRy!!!

    The area of a rectangle is (6x^2)^2y^3 and the width is 9xy^2. What is the length of the rectangle?

    asked by VERONICA
  231. math question

    I have to answer the follwoing question: Jades mother was making curtains for the dining room. She use 37 3/4 yards of fabric for the curtain panels. 13 2/7 yards of fabric for the valance. and 6ft 2in. of cord for the tiebacks. HOW many yards of fabric

    asked by marko
  232. english

    is this sentence correct What did the philosopher Aristotle mean when he said "To perceive is to suffer"?

    asked by kiedra
  233. Physics

    Assume that the three blocks in Figure P4.27 move on a frictionless surface and that a F = 46 N force acts as shown on the m = 2.5 kg block. Figure P4.27. (a) Determine the acceleration given this system. m/s2 (to the right) (b) Determine the tension in

    asked by Avery
  234. social studies

    Why did Egypt want to control Nubia?

    asked by 5123
  235. English

    I need some help finding statistics and pics about how much money people save by using the online community. Help please !

    asked by Anonymous
  236. Math

    Marquis called several pizza places and was told the following prices for a large pizza: $10,$11,$8,$17,and $9. What are the mean and the median prices? Is one more useful than the other for describing the typical price? Explain. P.S. For the mean I got 11

    asked by Elaina
  237. Pre- Calculus

    Evaluate the trig function tan33degress

    asked by Steve
  238. college/ pre-cal

    a square fence 9 feet high enclosing a radio tower is 3 feet from the tower on all 4 sides. guy wires used to hold the tower in position are attached to the tower 30 feet above the ground and 13 feet from the fence on all 4 sides. How long are the guy

    asked by theresa
  239. 5th grade math

    holly's garden is divided into 5 equal sections. she will fence the garden into 3 areas by grouping some equal sections together. what part of the garden could each fenced area be?

    asked by dada
  240. CHEMISTRY

    ive names of the following covalent (nonmetallic) compounds: S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H *The longer ones are the ones I need help on. The shorter ones such as the first one are ones I have completed and would like to make

    asked by Margearett
  241. chem

    Formulas for the covalent compounds: Diphosphorous monoxide Tetrasulfur hexaiodide

    asked by Margearett
  242. biology

    Is Protein a short term energy source or a long term energy source? please explain

    asked by sarry
  243. biology

    Is Starch a long-term energy source or short-term energy source? please explain!

    asked by sarry
  244. Algebra 2

    My question involves "Graphic Representation of Radicals of the Second Order" I know that the length of the hypotneuse of a right triangle equals the square root of the sum of the lengths of the two legs. The problems I'm having trouble with are the square

    asked by Josh
  245. Calculus

    If x=2sec (theta), express tan(theta) in terms of x.

    asked by Elaine
  246. Calculus

    Evaluate the integral from [(2/square rt 2),0] of dx/sqaure root of (4-x^2)

    asked by Elaine
  247. Calculus

    integrate: (square root of (y^2 -121))/y dy, y>11. I got (12(square root of (y^2-121))/12 -sec^-1 (y/12) +C but it's not right. I'm not sure where I am going wrong.

    asked by Becca
  248. Calc

    Integrate from [0, 1/2]: 1/(4x^2+1)^(3/2) dx

    asked by Anonymous
  249. physics

    The Ferris Wheel in the figure below is a vertical, circular amusement ride with radius 10 m. Riders sit on seats that swivel to remain horizontal. The Ferris Wheel rotates at a constant rate, going around once in 11 s. Consider a rider whose mass is 59

    asked by mo
  250. Social studies

    How did religon affect social order in Sumer?

    asked by 5123
  251. Calculus

    Integrate 1/(square root of (x^2 +2x +37))

    asked by Anonymous
  252. 7th grade science

    definition of cell cycle

    asked by saranghae12
  253. MATH

    Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per hour for the frst part of the trip and 80 kilometers per hour for the secound part. If the total trip took 6 hours, how long was she traveling at 80 kilometers per hour?

    asked by mercy
  254. social studies

    How did early writing deveolp into the modern alphabet?

    asked by 5123
  255. ASHFORD

    Identify two distinct fallacies you see committed in the media.

    asked by JACK
  256. Math

    A school principal randomly choose 75 students for a survey on the cafeteria food. Determine whether the sample may be biased. Explain.

    asked by Elaina
  257. Precalculus

    Solve Cos^2(x)+cos(x)=cos(2x). Give exact answers within the interval [0,2π) Ive got the equation down to -cos^2(x)+cos(x)+1=0 or and it can be simplified too sin^2(x)+cos(x)=0 If you could tell me where to go from either of these two, it would be great

    asked by Josh
  258. social studies

    How was Mesopotamia first united into one empire?

    asked by 5123
  259. Chemistry

    A particular reaction has an activation energy of 51.6 kJ/mol-rxn. How much faster is the reaction at 50 oC versus 25 oC? a. 2 times b. 5 times c. 3 times d. half as fast d. 20% as fast I think it would be A??

    asked by Mohamed
  260. English

    How do I cite a picture that is in an article for my work cited page???

    asked by Anonymous
  261. Math

    A playground has the shape of a parallelogram. If the base is 30 feet, and tyrese corresponding height ishhhh 25 feet, what is its area?

    asked by Milli
  262. social studies

    Whta area did the Pharaohs of Kush rule?

    asked by 5123
  263. Mrs.Sue Math pls check :)

    I have to answer the follwoing question: Jades mother was making curtains for the dining room. She use 37 3/4 yards of fabric for the curtain panels. 13 2/7 yards of fabric for the valance. and 6ft 2in. of cord for the tiebacks. HOW many yards of fabric

    asked by marko
  264. chemistry

    What volume of a 4.50% v/v solution of ethanol in water can be prepared with 23.9 mL of ethanol

    asked by Anonymous
  265. Chem please help

    Formulas for the covalent compounds: Diphosphorous monoxide Tetrasulfur hexaiodide

    asked by Margearett
  266. CHEMISTRY

    Give names of the following covalent (nonmetallic) compounds: S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H

    asked by Anon
  267. life orientation

    what according to the basic conditions of employment act applies with regard to the contraventions ?

    asked by Anonymous
  268. any tutor

    Are there any tutors on right now or people who are good with chemisty?

    asked by Anon
  269. Psychology

    How does self-concept affect perception?

    asked by Alana
  270. 7th grade social studies

    what was the Texas-Santa Fe expedition, and what were the results? Please explain, help, and thank you very much.

    asked by saranghae12
  271. life orientation

    what according to the basic conditions of employment act applies with regard to the contraventions ?

    asked by Anonymous
  272. 8th grade math

    how would i graph this inequality? 14x-23

    asked by saranghae12
  273. physics

    When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 79.1 kg man just before contact with the ground has a speed of 6.27 m/s. In a

    asked by Riley
  274. Statistic

    The television network you addressed in Week 4 is asking you to compare the moods of groups that watch different types of shows. You can choose what they mean by moods. You may compare them on general mood, happiness, depression, frustration, or anything

    asked by Anonymous
  275. Chemistry

    How do I balance these equations? KOH + NHO3 → H20 + KOH HCl + NaOH → H20 + HCl Don't have to give me the answer, just tell me how. Please, thanks.

    asked by London
  276. Math

    'one angle is 4 times as large as another angle of the same triangle. the third angle o the triangle has a measure of 60 degress.' what are the measures of the other two angles in the triangle.

    asked by Mike
  277. geology

    discuss the nomenclature and geometry of sand bodies

    asked by excel
  278. statistics

    a recent study by a large retailer designed to determine whether there was a relationship between the importance a store manager placed on advertising and the size of the store revealed the following sample information: observed

    asked by markeda
  279. physics

    Two dogs are fighting over a stuffed animal. One pulls to the right with a force of 88 N at 18° above the horizontal. The other pulls down and to the left with a force of 74 N at 12° below the horizontal. Ignoring the weight of the toy, if the total work

    asked by tommy
  280. Algebra; HELP

    Solve the equation. 3x^2+18x+24=0 Explanation, too please!

    asked by Poop.
  281. Finite

    One coin is fair and one is weighted so that Pr[H] = [ 1/4]. You randomly select one of the two coins, and flip it 3 times, noting the result of each flip. What is the expected number of heads?

    asked by KS
  282. Physics to bobpursley or any1 else who knows this

    A planet has two satellite moons. Moon X has an orbital period of 2.13 days. Moon Y has an orbital period of about 3.53 days. Both moons have nearly circular orbits. Use Kepler's third law to find the distance of each satellite from the planet's center.

    asked by Angelina
  283. Chemistry/Calorimetry

    You buy coffee (200.0 ml) served in a styrofoam cup. You are up late working in a chemistry lab, and want to drink the coffee right away, but at 95.0 degrees C, it is too hot to drink. You like the temperature of your coffee to be 79.0 ± 1.0 degrees C.

    asked by Jen
  284. physics

    A block of mass m = 4.30 kg is released from rest from point circle a and slides on the frictionless track shown in the figure below. (Assume ha = 5.20 m.) B=3.20 c=2.00 (a) Determine the block's speed at points circle b and circle c. point circle b Y

    asked by Darcie
  285. elementary stats

    the participants in a television quiz show are picked from a large pool of applicants with approximately equal number of men and women.Among the last 11 participant there have been only 2 women.If participants are picked randomly,what is the probability of

    asked by Rose Bud
  286. statistics

    Suppose IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. What percentage of the scores are above 130?

    asked by Beth
  287. elementary stats

    On a multiple choice test with 11 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the mean for the number of correct answers.

    asked by Rose Bud
  288. physics

    Taking R = 1.00 k Ω and ∑ 250 V in Figure P28.25, determine the direction and magnitude of the current in the horizontal wire between a and e. google this to find picture

    asked by bel
  289. bisness studies

    Three specific example of civil society organisation

    asked by kamogelo
  290. physics

    A 90 cm length of steel wire with a diameter of 0.5 mm is stretched between the inside walls of an oven the wire is just taut with no tension when the temperature in the oven is 250 °C. What is the the tension force in the wire when the oven cools to a

    asked by sand
  291. chemistry

    How many molecules in 8.221g PbO2?

    asked by sara
  292. ALGEBRA

    Find the choice below which gives a first step in solving the given system of equations by the addition method 6x - 5y = 12 x + y = 3

    asked by TERESA
  293. calculus

    integral of x*sqrt(2*x-1)

    asked by Anonymous
  294. Physics

    A mass and spring are arranged on a horizontal, frictionless table as shown in the figure below. The spring constant is k = 480 N/m, and the mass is 4.8 kg. The block is pushed against the spring so that the spring is compressed an amount 0.31 m, and then

    asked by Tarra
  295. physics

    Two men pushing a stalled car generate a net force of +698 N for 7.37 s. What is the final momentum of the car?

    asked by Tom
  296. algebra

    Solve using the substitution method 6x-3y=18, 6x+3y=-12

    asked by sharday
  297. physical chemistry

    A sample of the sugar D-ribose (C5H10O5) of mass 0.727g was placed in a constant volume calorimeter and then ignited in the prescence of excess oxygen. The temperature rose by 0.910K In a separate experiment in the same calorimeter, the combustion of

    asked by nicole
  298. Axia College

    Need help with solving the double equation problem. 3x + 2y = 3 9x - 8y = -2

    asked by Beth