Questions Asked on
May 17, 2012

  1. Chemistry

    How many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7gFe? Fe2O3(s) + 3CO(g) => 3CO2(g) + 2Fe(s)

    asked by Shelly
  2. chem, predicting direction of change in entropy

    Predict the direction of the entropy in each reaction. a. CaCO3(s)-> CaO(s) +CO2(g0 b. NH3(g)+HCl(g)->NH4Cl(s) c. 2NaHCO3-> Na2CO3(s)+H20(g) +CO2 d. CaO(s)+CO2(g)-> CaCO3

    asked by bkue
  3. Probability and Statistics

    A package contains 12 resistors, 3 of which are defective. If four are selected, find the probability of getting the following. No defective resistors One defective resistors 3 defective resistors

    asked by Brad
  4. Geometry Multiple Choice Question Please Help!

    Find the value of x. If necessary, round your answer to the nearest tenth. The figure is not drawn to scale. {THe figure is a circle with a tangent crossing through the top section of the circle. The value of the tangent is 12. There is a line

    asked by LeXi;)
  5. chemistry

    x gm og Ag was dissolved in HNO3 and the solution was treated with excess of NaCl when 2.87 g of AgCl was precipitated. find the value of x?

    asked by aayushi
  6. physics

    the magnetic force on a straight 0.15m segment of wire carrying a current of 4.5 A is 1.0 N. What is the magnitude of the component of the magnetic field that is perpendicular to the wire?

    asked by ana
  7. Algebra 2

    Write a recursive formula for the sequence 15, 26, 48, 92, 180, ... Then find the next term.

    asked by Mimi
  8. Chemistry

    How do I calculate the mass of sodium carbonate required to neutralize 15-20 mL of 0.25M HCl at the stoichiometric point?

    asked by Joel
  9. math

    If AC = 20, AE = 25, and AB = 5, what is the length of AD?

    asked by Aliyah
  10. Algebra 2

    Find the arithmetic mean a n-1=3.9, a n+1=7.1

    asked by Mimi
  11. Math

    There are six different toppings for pizzas, sausage, hamburger, pepperoni, ham bacon and pork. There are three different cheeses, american, mpzzarella, parmeasan. the pizza comes with two different meats and one chese , how many different combinations of

    asked by tj
  12. English

    As you research, verify the facts you find by consulting______. A.Mutilple sources B.Yor English teacher C.The encyclopedia D.The preface Secondary sources______. A.Provide firsthand testimony and direct evidence B.Interpret and analyze primary or other

    asked by MM
  13. physics

    a small pith ball carries a charge of -1.3 uc. how many excess electrons does this represent?

    asked by ann
  14. trig

    Given sin a = 15/17 with a in Quadrant I and cos beta = 4/5 with beta in QuandrantIV, find the exact value of cos(a+beta)

    asked by MIK
  15. Calculus

    A container is in the shape of an inverted right circular cone has a radius of 2 in at the top and a height of 6 in. At the instant when the water in the conatiner is 5 in deep, the surface level is falling at the rate of -.4 in/s. Find the rate at which

    asked by Liz
  16. physics

    A girl throws a water-filled balloon at an angle of 50.0 degree(s) above the horizontal with a speed of 12.0 m/s. The horizontal component of the balloon's velocity is directed toward a car that is approaching the girl at a constant speed of 8.00 m/s. (See

    asked by Angel
  17. Number sequence

    Find the next 3 numbers of this sequence 243, 81, 27.

    asked by Marco
  18. trigonometry

    given v=5i+3j and w=-4i+8j, find projwv

    asked by jenna
  19. chemistry

    a candle was 27.9 grams. the mass of the candle that burned in 3 minutes was 7.2 grams. a) How many moles of wax were in the candle before it burned ? b) How many molecules are in the candle before it burned? c) How many moles of wax were used up during

    asked by auburn
  20. Management

    1. Regarding management and leadership, which statement is most accurate? A. Leaders can be good managers, and good managers can be leaders. B. Leaders aren’t managers, and managers aren’t leaders. C. Leadership and management are entirely unrelated.

    asked by doofn
  21. English

    (From Emily !@#$%^&inson's "The Moon is Distant from the Sea) In the !@#$%^&inson poem, the moon and the sea are metaphors for a. uncaring and cold natural forces b. a strict teacher and a frightened pupil c. a loved one and the speaker d. the effect of a

    asked by mysterychicken
  22. chemistry

    1) What 2 resources are used up as a candle burns? 2) What has happened to the atoms in these resources? 3) Is it possible to recover these 2 resources after theyve been used?

    asked by auburn
  23. math

    On Saturday, the fruit and juice bar was selling 23 glasses of fruit punch an hour. By 4 p.m., they had sold 138 glasses. If their goal was to sell at least 276 glasses of fruit punch, which inequality can be used to find h, the number of hours they must

    asked by Anonymous
  24. Probability and Statistics

    A package contains 12 resistors, 3 of which are defective. If four are selected, find the probability of getting the following. No defective resistors One defective resistors 3 defective resistors

    asked by Brad
  25. trig

    an angle with the radian measure of 9pi/5. find radian measure of its reference angle. answers: -4/5, 4pi/5, -pi/5, or pi/5

    asked by Kayla
  26. Math

    The bar graph shows the cumulative number of death form AIDS in the US, from 1990 through each of the years 1996-2002. The data in the graph can be modeled by the following polynomials, in which f(x) and g(x) represent the cumulative number of AIDS deaths

    asked by Anonymous
  27. Chemistry

    Calculate the grams of solute required to make 2500mL of 90% saline solution?

    asked by Morgan
  28. circles

    Find x Is the triangle equilateral, isosceles, or scalen, and explain. The picture is a circle with a triangle inside P at the top and Q left corner and R at right corner it's labeled with (8x-10) on the outside of the circle between QP, and (6x) on the

    asked by lilman
  29. Chemistry

    The pH of a 0.010 M aqueous solution of a weak monoprotic acid, HX, is 4.5. What is the value of the acid ionization constant?

    asked by Anonymous
  30. math

    A pastry chef has 13 pounds of apple slices to make 8 apple pies. if the chef distributes the slices equally, what will be the weight of the apple slices used to make each pie?

    asked by taylor
  31. chemistry

    Na + H2O ¨ NaOH + H2 How many moles of H2 would be formed from 30 grams of Na in the following (UNBALANCED) equation?

    asked by nikki
  32. Economics

    The formula given was: (real rate of interest) = (nominal rate of interest) - (expected rate of inflation) A chartered bank offers a one-year loan at "3 points above prime." Prime is 4 per cent. a) What is the nominal interest rate? b)If expected inflation

    asked by Seinna
  33. algebra

    Factor the trinomial below. Write each factor as a polynomial in descending order. Enter exponents using the caret ( ^ ). For example, you would enter x2 as x^2. 25x2 + 30x + 9

    asked by Anonymous
  34. trig

    write y=sinx-cosx in the form y=ksin (x+a), where the measure of a is in radians. answers: sqrt2sin (x+3pi/4), sqrt2sin (x+5pi/4), sqrt2sin (x+pi/4), or sqrt2sin (x+7pi/4) ...?

    asked by Kalen
  35. AlgebraB

    Help! I have to graph my answer to this problem: ADFG has vertices D (–2, 4), F (–3,1), and G (–1, 2). Find the vertices of the image after the rotation of 180° about the origin.

    asked by Ann
  36. Calculus / a bit of physics

    explain why a scalar equation of the line exists in 2-D space, but not in 3-D space.

    asked by j
  37. Math

    can you help me do my homework

    asked by Lissette
  38. trig function

    Suppose f(x)=cos x - sin x and g(x)=cos x + sin x. Explain why the graph of (fxg)(x) is equivalent to the graph of h(x)=cos x after it has been horizontally compressed by a factor of 1/2. Please help, thank you!

    asked by Kjd
  39. Math

    If Sally places a rocket that is 3 feet 6 inches tall atop a launch pad that is 1 foot 8 inches tall, how tall will the entire unit, rocket and launch pad, be when she is done? A.5 feet 4 inches B.5 feet 2 inches C.1 foot 8 inches D.4 feet 2 inches B? 3

    asked by Rezu
  40. science

    a u-tube is partially filled with water.oil which does not mix with water is next poured into one side until water rises by 2.5cm on the other side.if the density of oil be 0.8 ,the oil level will stand higher than the water level by how much?

    asked by abuobaida johar
  41. Geometry Inscribed Angles Multiple Choice

    Find the measure of angle BAC. {There's an image of a circle with an angle from the top left side going to the bottom of the right side. Point A is the point at the top left side starting the angle, and B is at the bottom and point C is at the bottom right

    asked by LeXi<3
  42. Chemistry

    4. 5.6 x 10-6 mol of A and 5 x 10-5 mol of B are mixed in a 200 mL flask. The system is represented by the equation: 2A + B --> 3C I 2.8x10-5 M 2.5x10-4 0 C -2x -x +3x E 2.8x10-5-2x 2.5x10-4-x 3x10-5 B = 2.5x10-4-x = 2.4x10-4 x = 1x10-5 A =

    asked by Katie
  43. honors chemistry

    Compare the present Periodic Table with Mendeleevs original Periodic Table in terms of how it is organized, number of elements, what it looks like, ease of understanding, and information given.

    asked by Kellin
  44. Medical

    Which of the following may lead to claim denials or improper service reinbursement? A.Reporting of multiple APG B. HCPCS codes on out patient surgeries C.Inaccurate physicians documentation D. Updated ICD-9-CM codes (C) ic my answer can someone check this

    asked by Brenna
  45. trig function

    Suppose f(x)=cos x - sin x and g(x)=cos x + sin x. Explain why the graph of (fxg)(x) is equivalent to the graph of h(x)=cos x after it has been horizontally compressed by a factor of 1/2. Thanks so much...

    asked by Anonymous
  46. math

    what is the boy-girl ratio in a class of 32 pupils if there are 18 girls?

    asked by joey
  47. science review

    since tomorrow is my test. Please check: seed coat- skin covering the seed to protect the inner parts Hilum- ? cotyledon- where nutritient is stored inside the seed embryo- part of a seed that grows into a plant. it include roots, leaves, and stem?

    asked by Celest
  48. Computer Science

    Design a program that will ask the user to enter the amount of a purchase. The program should the compute the state and county sales tax. Assume the state sales tax is 4 percent and the county sales tax is 2 percent. The program should display the amount

    asked by AB
  49. writing

    what do my paper needs Im applying for the E R register position at Greenwood Leflore Hospital. I gain knowledge working as a floor secretary and working along with nurses. The experience taught me the value of human life. Learning to feel what a person

    asked by willie
  50. trig

    what's the single trig. function of cos6xcosx-sin6xsinx

    asked by MIK
  51. Calculus

    three forces each of magnitude 50 N, act in eastward, westward, and northwest directions, Find the resultant force.

    asked by j
  52. english

    What does this poem mean? (tone, mood, and rhyme scheme) At the Un-National Monument Along the Canadian Border William Stafford This is the field where the battle did not happen, where the unknown soldier did not die. This is the field where grass joined

    asked by Catherine
  53. English

    What are the literary elements of this poem and what does it mean? Foundations Leopold Staff I built on the sand And it tumbled down, I built on a rock And it tumbled down. Now when I build, I shall begin With the smoke from the chimney.

    asked by Anonymous
  54. Finance

    Your firm is looking at a new investment opportunity, Project Alpha, with net cash flows as follows: ---- Net Cash Flows ---- Project Alpha Initial Cost at T-0 (Now) ($10,000) cash inflow at the end of year 1 6,000 cash inflow at the end of year 2 4,000

    asked by Casonya
  55. physics

    The potential difference between the accelerating plates of a TV set is about 30 kV. If the distance between the plates is 1.1 cm, find the magnitude of the uniform electric field in the region between the plates. (in N/C)

    asked by andrew
  56. Physics

    At an instant, Runner 'A' runs at 6m/s with an acceleration of 2m/s^2. Runner 'B' runs at 5m/s with an acceleration of 4m/s^2, and the former (Runner A) is 2 metres ahead of the latter (runner B). How long does it take for Runner B to catch up with runner

    asked by Ajani
  57. trig

    a vector has a magnitude of 16 and direction of 120 degrees. write the vector in terms of unit vecotrs i and j.

    asked by TAYLOR
  58. Chem 1

    Which one of the following electron transitions would result in the loss of energy from a hydrogen atom? a. n=1 to n=3 b. n=5 to n=3 c. n=4 to n=6 d. n=1 to n=5

    asked by jenni
  59. Medical

    Stan is on active military duty and, therefore, is probably receiving medical coverage from A. TRICARE. B. CHAMPVA. C. Medicaid. D. SCHIP My answer is (A) can someone tell me if this is the right answer

    asked by Brenna
  60. Mathematics

    A loan of 12,000 was borrowed from a bank at 14% per annum. Calculate the interest of the loan at the end of the first year. And the total amount owing at the end of the first year. A repayment was made of 7,800 at the start of the second year. Calculate

    asked by Sam 101
  61. math

    Miss C gives a test to the 10 students in her first-period algebra class. The grades are 93,82,95,86,90,84,89,79,87,93 A. Find the mean and Standard Deviation of the 10 scores. B. List all the reasons for why the late class could have a different mean or

    asked by Kate
  62. Information Systems in Organizations

    Directions: Test your knowledge of this topic by selecting the best answer for each of the following questions. When you click the Submit button, you will see your score and the results will go to your instructor. You may want to refer to the general

    asked by Denise
  63. Art

    I still have a few things I'd like you to consider, Writeacher. Thank you very much. 1) She refused to go to the dentist's We are planning to move into a new house. 2) They offered me to go for a week in Egypt: They offered to let me go to Egypt for a

    asked by John
  64. physics

    A wind sled has a mass of 45kg and is gliding at a speed of 2m/s over the frozen lake with neglible frictional effects. A gust of wind behind the sled exerts a force of 10N over a distance of 30m. With what speed is sled moving after the wind gust?

    asked by Belle Jean
  65. geometry

    you have a scoop of ice cream 3 inches in diameter sitting on a cone with 1 inch

    asked by rido
  66. Math

    1) Matt traveled the first leg of his trip for 1350 miles on a large jet. He then traveled an additional 600 miles on a private plane to reach his destination. If the speed of the jet was three times the speed of the plane and the total time in the air was

    asked by Sara
  67. trig

    write sin4xcos2 as the sum or difference of two functions. answers: 1/2(cos6x+cos2x), 1/2(cos2x-cos6x), 1/2(sin6x+sin2x), sin6x-sin2x

    asked by jake
  68. trig function

    Suppose f(x)=cos x - sin x and g(x)=cos x + sin x. Explain why the graph of (fxg)(x) is equivalent to the graph of h(x)=cos x after it has been horizontally compressed by a factor of 1/2. Thanks so much...

    asked by Anonymous
  69. English

    would "the only heroic thing is the sky" be personification?

    asked by Anne
  70. english

    you've applied foa specific job in your field of study. the human resource ARRANGE A INTERVIEW AND TELL YOU BRING YOUR POLISHE PIECE OF WORK

    asked by willie
  71. trig

    write sin4xcos2 as the sum or difference of two functions. answers: 1/2(cos6x+cos2x), 1/2(cos2x-cos6x), 1/2(sin6x+sin2x), sin6x-sin2x

    asked by Kalen
  72. chemistry

    4 moles CO, 5 moles N2 and 2 moles C2H4 are placed in a 5 liter vessel at 27 degree celsius . the ratio of kinetic energy per molecule of CO2, He and NH3 is

    asked by kanika
  73. 5th Grade Writing

    do you use its or it's in this sentence "The horse hurt _____ leg"?

    asked by Keke Pressley
  74. algebra

    Rewrite this polynomial so that the terms are in ascending order: 8x + 4x^4 + 10 + 6x^3 + 3x^5

    asked by MIndy
  75. Bus Finance

    Consider the following income statement and answer the questions that follow: Sales (100 units) $200 Variable costs ($.80 ea) 80 Fixed Costs 20 EBIT 100 Interest Expense 30 EBT 70 Income tax 24 Net Income 46 a. What is the firm’s Breakeven Point in

    asked by Casonya
  76. math

    solve 27^2x-1=(1/81)^x

    asked by devon
  77. LA

    Carried away by shallow love or affection _ N _ A _ _ A _ E _

    asked by Anmol
  78. math

    you need 5 foot long board into pieces that are 3/4 of a foot long. How many pieces can we cut? what length of the board will be left?

    asked by juan
  79. physics

    A 2kg toaster is at rest on a table which has no friction.Sally begins pushing the toaster to the right with a force of 6n for seconds. A)what is the net force on the toaster? B)what is the toaster a cceleration? C)what will the velocity be at the end of

    asked by lisa
  80. trig

    solve 2cos^2x-sinx=1, 0 < or equal to x < 2pie

    asked by Calvin
  81. Physics

    The appromiate mass of a comet X has been memasured. When comet X orbits the Sun 5000 years later it only has half it's previous mass. Approximately how many orbits of the Sun has the comet completed and what is the period of the comets orbit?

    asked by Kim
  82. trig

    write y=sinx-cosx in the form y=ksin (x+a), where the measure of a is in radians.

    asked by Calvin
  83. trigonometry

    write 2=5cis 11pie/6 in standard form.

    asked by jenna
  84. Econ

    Do people living in countries with higher real GDP necessarily have better living standards compared to countries with relatively lower GDP? Give practical example. 2. What measures would better compare the well-being (living standard) for residents of

    asked by Andrea
  85. algebra

    Jonathan and Bill need to stack firewood. Jonathan can stack 130 pounds of firewood in 2 hours. Bill can stack 150 pounds of firewood in 3 hours. How long will it take them to stack 400 pounds of firewood if they work together (round to the nearest

    asked by Anonymous
  86. physics

    An ideal gas with r(Gama) = 1.5 occupies a volume of 2.0 L. The gas expands isothermally to a volume of 3.0 L. Alternatively, the gas reaches the same final state by first adiabatically expanding to the final volume then heating isochorically to the final

    asked by sand
  87. Literacy poetry1

    Does any one have the answers for the penb foster poetry 1 exam

    asked by Lovely
  88. Polynomials. :) :)

    2x^4+4x^3-7x^2-x+7 Approximate the irrational solutions correct to 3 decimals. If there is more than 1 real solution, enter them from smallest to largest, separated by a comma.

    asked by Diana
  89. algebra1

    can you guys please classify the system as consinent or inconsitent, and determin solution x-y+z=6 7x-2y-2z=1 5x+6y+3z=11

    asked by jenika
  90. trig

    what is the exact value of sin[tan^-1(2/3)]

    asked by Kayla
  91. Physics

    What magnitude of acceleration will result when 60N and 80N forces in opposite direction if applied to a 5kg body?

    asked by Beka
  92. finance

    The expected return on the market is 12% and the risk free rate is 7%. The standard deviation of the return on the market is 15%. Ones investor creates a portfolio on the efficient frontier with an expected return of 10%. Another creates a portfolio on the

    asked by benish
  93. Math

    Can you help me with the following Input and Output values? Input 0 Output 1 Input 1 Output 10 Input 2 Output 20 Input 3 Output 30 Input 4 Output 40 Input 5 Output 50

    asked by Sarah
  94. compound function

    Given: f(x)=2x^2-x+1 g(x)=2 sin x h(x)=3^x Determine: a) f(g(x)) b) (h^-1 o f)(x) c) g(f(h(x)))) Please show steps, thank you very much.

    asked by Kjd
  95. compensation and benefit

    Discuss the possible impact of StopNShopToday, Inc. stores being located solely in one of the following three locations with the indicated employee demographics: Location: •New York City, NY ◦average employee age: 30 years old ◦male/female ratio:

    asked by erma
  96. math

    How do you solve 6(cos^2)x+cosx=1 I need it in the form that's like (x+x)(x+x) so that I can set them equal to zero and find the answers. Please show all of the steps.

    asked by Morgan
  97. Math

    A cone has a volume of 41 cubic meters. If cut the cone in half, what would be the volume of the cone?

    asked by Scott
  98. science

    a passenger in a ferris wheel rates 3m/s in a vertical circle of radius 5m. find the apparent the ratio of his apparent weight to his true weight at the top and bottom of the circle

    asked by neliswa
  99. math

    Using the letters in ADJUSTING without repeats, How many different nine letter arrangements could be made? How many of these nine-letter arrangements have a consonant in fifth position and J in sixth position? What special name is given to the sixth

    asked by Kasey
  100. trig function

    Suppose f(x)=cos x - sin x and g(x)=cos x + sin x. Explain why the graph of (fxg)(x) is equivalent to the graph of h(x)=cos x after it has been horizontally compressed by a factor of 1/2. Thanks so much...

    asked by Anonymous
  101. Calculus

    Find the third Derivative of f(x)=x(3x-7)^3 The answer is 3x-1134 but I attempted the problem multiple times and I keep ending up with 648x-1134. What am I doing wrong?

    asked by Liz
  102. trig

    write sin4xcos2 as the sum or difference of two functions. answers: 1/2(cos6x+cos2x), 1/2(cos2x-cos6x), 1/2(sin6x+sin2x), sin6x-sin2x

    asked by kate
  103. algebra 2 help please

    D)x^2+y^2=625 X^2+(y-50)^2=1122 Y=20 (-15,20)(15,20) E)x^2+y^2=625 X^2+y^2-200y+10000=13618 Y=18 (-20,-15)(20,-15) 1)Combine your answers from Parts D and E to pinpoint the epicenter of the earthquake 2)Graph the equations for all three stations to verify

    asked by jenny
  104. essay

    what are some some similarities and differences between dawn and night by elie wiesel?

    asked by annie
  105. Chemistry

    A2B3 --> 2A + 3B I 0.001 0 0 C –x 2x 3x E 0.001-x 2x 3x 3x = 0.006, x = 0.002 A = 0.004 B = 0.006 A2B3 = 0.001-0.002 = (0.004)2(0.006)3/ Am I close?

    asked by Katie
  106. physics

    If you are drive your car into a brick wall and are not wearing a seat belt,you will be badly injured why?your answer should include the word "force" and velocity"

    asked by lisa
  107. trig

    write sin4xcos2 as the sum or difference of two functions.

    asked by Calvin
  108. physics

    A hocky puck is sliding along at 3m/s on an air hocky a) what is the net force on the puck? B)what is the pik's acceleration? C)what will the puck's velocity do?be detailed

    asked by lisa
  109. trig

    write 2+2 squareroot of 3i in trig form.

    asked by ky
  110. Calculus

    determine the each resultant a) 10 km/h north followed by 8 km/h west b) 25 N at 10 degrees to the horizontal and 30 N horizontally.

    asked by j
  111. physics

    i will begreatfull if u help me insolving the below problems: 1.)the time period of a pendulum clock on the surface of the earth is 6 sec.Find the timeperiod of the same pendulum on the moon.(g=9.8m/sec2) 2.)the time period of a pendulum is 6.28sec.Whay

    asked by srikar
  112. Early Childhood Education

    Of the following tasks performed outside the classroom,which is the MOST time-consuming?

    asked by Sandra
  113. world geo

    is war an example of human geography?

    asked by kailee
  114. Physics

    find the altitude change of a 10,000 kg fighter which climbs and in doing so loses 100 m/s of airspeed

    asked by Nicole
  115. english

    what would the tone of this poem be? serious? Foundations Leopold Staff I built on the sand And it tumbled down, I built on a rock And it tumbled down. Now when I build, I shall begin With the smoke from the chimney

    asked by Angela
  116. Math Help!!

    Solve 2x-y-5z=1 x+2y+3z=9 3x+6y+z=11 2x-3y=-13 -5x+2y=16

    asked by Sara
  117. algebra1

    graph the system of inequalities, and classify the figure created bu the solution region. y¡Ü4x+4 y¡Ü-0.25x+4 y¡Ý4x-1 y¡Ý-0.25x-1 a)the shaded region is a plane minus a rectangle b)there is no region common to all four inequalities c)the shaded

    asked by jenika
  118. Algebra2 {ASAP}

    Hi helper, I used permutation for the following question. How can i use combination to find the answer? Help me please! There are 12 red checkers and 3 black checkers in a bag. Checkers are selected one at a time, with replacement. Each time, the color of

    asked by Liz
  119. algebra1

    how many solutions does the system have? x-2y=6 3x-6y=18 a)1 b)2 c)many d)none

    asked by jenika
  120. math

    How do you solve 6(cos^2)x+cosx=1 I need it in the form that's like (x+x)(x+x) so that I can set them equal to zero and find the answers. Please show all of the steps.

    asked by Morgan
  121. financial understanding

    if apr is 7.3% daily and haad $400 1st 10 days, 1500 next 10 and 600 next 10 how much intrest was earned at end of month

    asked by ruth
  122. Function: Rate of Change

    Joe is investigating the rate of change of the function y=cos x on the interval xE[0,2π]. He notices that the graph of y=cos x passes through the x-axis at 45°. He also determines the instantaneous rate of change at x = 0, π, and 2π by inspection.

    asked by Anonymous
  123. math

    Compute: The number of combinations of 8 elements taken 3 at a time. The number of permutations of 8 elements taken 3 at at time.

    asked by Hannah
  124. combine functions.. please help.

    Given: f(x)=2x^2-x+1 g(x)=2 sin x h(x)=3^x Determine: a) f(g(x)) b) (h^-1 o f)(x) c) g(f(h(x)))) Please show steps, thank you very much.

    asked by K
  125. honors chemistry

    why were the noble gases considered to be inert gases until the 1960s?

    asked by Kellin
  126. math

    What is the number of ways 9 people from a group of 13 could be arranged in a line.

    asked by Matt
  127. Math

    Dividing a Polynomial - need detail and answer please!!! (6x^4+4x^3-x^2)/(6+2x)

    asked by Dennis
  128. finance

    Calculate the IRR of the following project: Year Cash Flow 0 -$30,000 1 $40,000

    asked by Casonya
  129. English 7 - Journal Entry Check

    Please check my journal entry to see if it's good and if there any grammar mistakes. This is an assignment for English. Art Therapist When I was doing some research on the computer two weeks ago, I saw the word "art therapist". For a moment I thought being

    asked by Laruen
  130. Math. Fractions

    Emily exercised from 4:05pm tob4:32 pm For what part of an hour did Emily exercise ? Write the fraction in simplest form Would it be 27/60 = 9/20

    asked by Marco
  131. math

    if you have a large cube with a surface area of 32 and a smaller cube with the surface area of 18 what would the ratio be for the smaller figure to the larger figure a)2:5 b)5:6 c)3:4 d)6:7

    asked by ana
  132. Chemistry

    PLEASE fully explain these...I've already tried to figure them out and failed terribly... thanks so much 4. 5.6 x 10-6 mol of A and 5 x 10-5 mol of B are mixed in a 200 mL flask. The system is represented by the equation: At equilibrium, there is 4.8 x

    asked by Katie
  133. PHYSICS

    A LORRY INCREASES VELOCITY FROM 6m/s TO 10m/s IN 25 SECOND.FIND THE ACCELERATION.

    asked by PHIL
  134. physics

    Why do car have head rest?your answer should include the word"force"and "velocity"

    asked by lisa
  135. math

    Find the number of different groups that could be made using 11 people from a set of 30

    asked by Nathan
  136. physics

    Why do car have head rest?your answer should include the word"force"and "velocity"

    asked by lisa
  137. dosing

    if 1 tablespoon is prescribed as a dose of medicine,approximately how many doses will be obtained in 12 fl.oz?

    asked by anna
  138. voc.

    to be carried by a carriage or on horseback 4 letters

    asked by Bailey
  139. trig

    what is the magnitude and direction of the vector U= -2i - 3j

    asked by TAYLOR
  140. trig

    find the angle between vectors U= and V=

    asked by TAYLOR
  141. trig

    U=5i+11j and V=2i-3j, find 2U-7U

    asked by ky
  142. math

    Compute 9(sub)C(sub)6

    asked by Kyle
  143. algebra1

    can you guys please graph the system of inequalities and clasify the solution of y¡Ü4x+4 y¡Ü-0.25x+4 y¡Ý4x-1 y¡Ý-0.25x-1

    asked by jenika
  144. Polynomials. :) :)

    f(x)=2x^4+4x^3-7x^2-x+7 has no rational roots. Approximate the irrational solutions correct to 3 decimals. If there is more than 1 real solution, enter them from smallest to largest, separated by a comma

    asked by Diana
  145. trig

    Write an equation for simple harmonic motion, given that the amplitude equals 4 inches and the period equals 2 seconds and the max displacement occurs when t=0. answers: y=4sin pi t, y=4cos pi t, y=4cos t, y=4sin2 pi t

    asked by Kayla
  146. Beginnings and Beyond Early Childhood Education

    All the following are reasons record keeping is essential to good early childhood program EXCEPT:

    asked by Sandra
  147. Medical

    When a physician is billing under the RBRVS system, he or she is using A. APCs. B. HCPCS/CPT codes. C. MS-DRGs. D. ICD-9 procedure codes My answer is (B) check this one for me please

    asked by Brenna
  148. Physics

    find the altitude change of a 10,000 kg fighter which climbs and in doing so loses 100 m/s of airspeed

    asked by Nicole
  149. answer please

    is -2x-y=9, 3x-4y=-8 dependent, independent, or inconsistent

    asked by jenika
  150. algebra 1

    y=2x-1 2x-y-1=0 a)this sytem has excatly onw solution b)this system has indinetly many solutions c)this system has no solution d)(1,1) and (0,0)

    asked by jenika
  151. math

    Farmer has 100yd by 60yd fence around his barnyard. How many yards of fence is needed to replace it?

    asked by Rebecca McGhee
  152. algebra1

    y=-x+8 x+y=7 a)(1/2,15/2) b)system has infinitely many solutions c)(-1/2,17/2) d)no solutions

    asked by jenika
  153. life orientation

    which two institutions/community organizations are involved in supporting or giving redress to teenage pregnancy?

    asked by nomzamo
  154. Math does anyone know this?

    y= x^2 +4x-5 x intercept- 4? y intercept- -5? vertex-? I don't know how to find the vertex. axis of symmetry?

    asked by Bluesky
  155. fraction

    How do I campara the fraction 7/8 and 8/9

    asked by mike
  156. Physics

    An object is projected from ground level with launch speed u and at an angle theta above the horizontal. Find the values of u and theta if the range is 28.6m and time of flight is 1.43secs. thanks!

    asked by Anonymous
  157. US HISTORY

    NO ONE KNOWS FOR CERTAIN WHY THE CLASSIC WORLD BEGAN TO DECLINE. GIVE TWO REASONS FOR A REASONABLE DECLINE?

    asked by daisy
  158. algebra1

    graph the system of inequalities, and classify the figure created bu the solution region. y¡Ü4x+4 y¡Ü-0.25x+4 y¡Ý4x-1 y¡Ý-0.25x-1 a)the shaded region is a plane minus a rectangle b)there is no region common to all four inequalities c)the shaded

    asked by jenika
  159. chemistry

    4 moles CO, 5 moles N2 and 2 moles C2H4 are placed in a 5 liter vessel at 27 degree celsius . the ratio of kinetic energy per molecule of CO2, He and NH3 is

    asked by kanika
  160. Art

    I left out these sentences. Could you please check them, too? Thank you. Is punctuation OK? 1) People suppose that he worked for Fiat. He is supposed to have worked... 2) Someone asked her about the weather. 3) My parents let me go on holiday on my own.

    asked by John
  161. Algebra

    give the domain of the function: f(t)= 3t²+5t+2

    asked by Elizabeth
  162. Determine value of X

    Given the functions f(x)=sqrt[x] and g(x)=x+1, determine all possible values of x for which f(g(x)) = g(f(x)). Show steps please, thanks a lot!

    asked by Anonymous
  163. grammar

    Rewrite each sentence below, replacing all clichés with more creative or straightforward expressions.Since we had worked like dogs for eight hours, we finally put a lid on it at 6:00 p.m.

    asked by Anonymous
  164. Physics

    What liquid substances have an index of refraction of 1.42? and then 1.43?

    asked by Gian
  165. to ms.sue

    what is wrong with the answer. also what is hilum?

    asked by Celest
  166. ALGEBRA

    Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. (Round your answer to the nearest cent.) $300 balance, 18% rate, $250

    asked by Monic
  167. math

    A recipe for glue for paper mache masks is shown. If you wanted to make 1/2 of the recipe, how much water would you need? Recipe for glue : 2 1/4c water

    asked by Mia
  168. analysis

    What is meant by the sample space for a random experiment?

    asked by Kasey
  169. algebra 2

    use quadtratic formula to find any X intercept. y=4x^-5x-4

    asked by jkt
  170. algebra 2

    solve 25n^-9=0

    asked by jkt
  171. LA

    Belonging to you _ _ _ R

    asked by Anmol
  172. LA

    Showing a fixed, firm purpose; determined R _ S _ L _ _ E_ _

    asked by Anmol
  173. history

    1) Romans elected leaders to make _______. 2) The ________ wrote the laws on the 12 Tables.

    asked by Aria
  174. LA

    Feelings of uneasiness of doubt _ U _ L _ _

    asked by Anmol
  175. math

    if you have a large cube with a surface area of 32 and a smaller cube with the surface area of 18 what would the ratio be for the smaller figure to the larger figure a)2:5 b)5:6 c)3:4 d)6:7

    asked by ana
  176. Health

    I left out this part. Thank you very much, Writeacher. 1) Have you received any news about our common project? How are things getting on in England? When do school holidays start in England? 2) When do you think we will know if the Commission has approved

    asked by John
  177. algebra 2

    If f(x) = int(x), find the given functional value. 1. f(-9.1)

    asked by Jt
  178. math

    if you have a large cube with a surface area of 32 and a smaller cube with the surface area of 18 what would the ratio be for the smaller figure to the larger figure a)2:5 b)5:6 c)3:4 d)6:7

    asked by ana
  179. algebra 2

    how can you tell when y is a function of x on a graph

    asked by Jt
  180. healthtasha

    how does an office manager software work?

    asked by Anonymous
  181. Language Arts

    Easy to manage or discipline D _ _ _ L _

    asked by Sabrina
  182. Math

    Victoria has a boat that can move at a speed of 20km/h in still water. She rides 140km downstream in the same time it takes 35km upstream. What is the speed of the river?

    asked by Courtney
  183. Language Arts

    Seemingly virtuous; showing religiuos devotion P _ O _ S

    asked by Sabrina
  184. Literature

    im really confused about this poem. What does it have to do with the three little pigs? or is it ot an allusion at all? Foundations Leopold Staff I built on the sand And it tumbled down, I built on a rock And it tumbled down. Now when I build, I shall

    asked by Anonymous
  185. Pre-Calc

    Hello! I'm stuck on how to do this problem and would appreciate some help! Choose a non-zero complex number c for f(z) = z2+ c. Find a complex number v that is in the escape set. Find a complex number w that is in the prisoner set. Graph the first five

    asked by l
  186. Algebra 1A

    Home Size The average size F in square feet of new U.S. homes built during year x is estimated by the formula F = 34x - 65,734, where x is any year from 2002 to 2008. In which year was the average home size 2504 square feet?

    asked by Nini
  187. physics

    a large truck is driving down the street when it hits a small bug a) which object has the larger force acting on it? b) which object has the larger acceleration?why?

    asked by lisa
  188. trigonometry

    find the dot product of u=2i-7j and v=i+8j

    asked by jenna
  189. Calculus

    determine an equation for each plane a) contains the point A(6,2,3), B(5,1,-3), and C(5,7,-2) b) parallel to 2x + 6y + 4z = 1 and contains the point P(3,2,1)

    asked by j
  190. PHYSICS

    A BODY CHANGES IT'S VELOCITY FROM 20M/S UNTIL IT COMES TO REST IN 10 SECONDS.WHAT IS IT'S ACCELERATION

    asked by PHIL
  191. Calculus

    determine the angle between the planes 2x + 2y + 7z = 8 and 3x - 4y + 4z = 5

    asked by j
  192. physics

    what has more inertia? a toy car going 1000mph or a cruise ship sitting at the dock

    asked by lisa
  193. Calculus

    Write a vector equation AND parametric equations of the line through the points A(6,-1,5) and B(-2,-3,6) direction vector = [8,2,-1] a vector equation r = (6,-1,5) + t(8,2,-1) use that to write the parametrics how do i write parametrics

    asked by j
  194. animals

    What is the habitat and location for the Florida Bonneted bat*? Also, what is its kingdom, phylum, class, order, and sub order? *Also known as the Wagner's Mastiff bat or the Wagner's Bonneted bat

    asked by lizzy
  195. Algebra

    find the arithmetic mean A_n-1_-3.9, A_n+1_=7.1

    asked by Mimi
  196. Algebra 2:)

    f(x)=x^5-2x^4-2x^3+4x^2-3x+3 Approximate the irrational solutions correct to 3 decimals. If there is more than 1 real solution, enter them from smallest to largest, separated by a comma.

    asked by Honey
  197. English

    in shadowy valleys and rocky ravine where tiny rills meet with rushing streams need it description

    asked by Arsh
  198. algebra1

    wihtout graphing, is this system independent, dependent, or incosistent? -2x-y=9 3x-4y=-8

    asked by jenika
  199. Art

    Can you please check these sentences, Writeacher? Thank you very much. 1) “I have been to Greece twice," he said. (He said that he had been to Greece twice) 2) It was the first time I had spent my vacation without my parents. Mary had done all the

    asked by John
  200. algebra

    Solve 8(x-1) + 4 = 9x - 8

    asked by cassie
  201. algebra

    find the value of c so that (c,5) is a solution to 2x + 3y =7

    asked by cassie
  202. algebra

    what is the slope of the line x = -2/3

    asked by cassie
  203. algebra

    write an equation in slope-intercept form for the line passing through (-2,6) and (4,-3)

    asked by cassie
  204. math

    the base of a container for coin boxes is 2 feet by 3 feet the base of the coin boxes is 2 inches by 3 inches the greastes number of coins that will fit into the container in a single layer is

    asked by marshall
  205. ethics

    Give an example from the past that indicates a similar result or a current social policy that might be regarded as wrong, which therefore needs to be changed.

    asked by Anonymous
  206. social studies 9

    !@#$%^&ens is famous for the names he gave to his characters-- Uriaha heap, mr gradgrind and little doritt are a few examples. often theses names help us to visualize the person. does the name "bumble"

    asked by bob
  207. boring history

    why was the aztec civilization considered warlike???

    asked by Spencer
  208. Math

    If a van is traveling at 25mph and needs to stop immediately, how much time and distance will be needed?

    asked by Cher
  209. math

    [(14+7) / 3] + 10 x (6-3)

    asked by tiffany
  210. function rate of change

    Joe is investigating the rate of change of the function y=cos x on the interval xE[0,2π]. He notices that the graph of y=cos x passes through the x-axis at 45°. He also determines the instantaneous rate of change at x = 0, π, and 2π by inspection.

    asked by Kjd
  211. Average rate of change

    Please help.. Determine the value of "g" so that the average rate of change of the function h(x)=x^2+3x+2 on the interval -3≤x≤g is -1. Thank you.

    asked by Kjd
  212. combine function, find x

    Given the functions f(x)=sqrt[x] and g(x)=x+1, determine all possible values of x for which f(g(x)) = g(f(x)). Show steps please, thanks a lot!

    asked by Kjd
  213. trig

    find the angle between vector U= and V= answers: 88 degrees, 45 degrees, 135 degrees, or 92 degrees...?

    asked by jake
  214. Math equation

    I have no idea how to solve this. f(x)=3x-4 a) f(10) b) f (-2) c) f (0) d) (b)

    asked by Mary
  215. Precalculus

    Write a logarithmic equation for 3^3/2= squareroot 27

    asked by Darlene
  216. math

    Permute Sub(11)Psub(4) Sub(5)Csub(5)

    asked by Paul
  217. Information Technology 130 Programming Concepts

    True or False Indicate whether the following statements are true or false. 1. T F: You cannot break up a word with the line-continuation character.

    asked by Roger
  218. Life orientation

    8 way in which the environmental problem impacts on your community

    asked by Shocky
  219. English

    would "sunburned shoulders" be an exaple of alliteration even though its a "sss" and "shh" sound?

    asked by Tamika
  220. Average of Rate change

    Please help.. Determine the value of "g" so that the average rate of change of the function h(x)=x^2+3x+2 on the interval -3≤x≤g is -1. Thank you.

    asked by Anonymous