Questions Asked on
November 20, 2012

  1. Algebra 2 help :)

    Any number in the form of a+-bi , where a and b are real numbers and b not equal 0 is considered a pure imaginary number. TRUE OR FALSE The minimum value is the smallest y-value of a function. T RUE OR FALSE i2 = square root of -1. TRUE OR FALSE Complex

    asked by Robert
  2. English

    I not real understand this poem Wordsmith by Susan Young In my mind I call my father the Pollyfilla king, watch with something akin to awe as he begins the arduous process of filling in the gaps, the long winded cracks that travel down the walls of my

    asked by Mohammad
  3. Probability please help!

    The digits 2, 3, 4, 7, and 8 are each used once in a random order to form a five-digit number. What is the probability that the resulting number is divisible by 4? Express your answer as a common fraction.

    asked by SuckatProb
  4. geometry

    The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. The front two wheels are six feet apart. What is the number of feet in the path traced by the inside front wheel in one trip around the circle? Express

    asked by mathfailure
  5. math help!!!!

    4. Ernesto loses 14.5 pounds in 7 months. Now he weighs 156.5 pounds. Which equation can be used to find how much he weighed before?

    asked by Jman
  6. chemistry

    At elevated temperatures, sodium chlorate decomposes to produce sodium chloride and oxygen gas. A 0.8915-g sample of impure sodium chlorate was heated until the production of oxygen gas ceased. The oxygen gas collected over water occupied 57.2 mL at a

    asked by Fred
  7. Physics

    Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.85x10^5 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.28X10^5 Pa and the pipe

    asked by Chelsea
  8. probability question - help!

    Two people agree to meet at a coffee shop. They each independently pick a random moment in time between 8 a.m. and 9 a.m. and show up exactly at their selected time. But they are very impatient, and only stay for 10 minutes after when they arrive. What is

    asked by mathfailure
  9. Chemistry

    A meteorological balloon had a radius of 1.1 m when released at sea level at 20◦C. It ex- panded to a radius of 5 m when it had risen to its maximum altitude, where the temperature was −20◦C. What was the pressure inside the balloon at that altitude?

    asked by Caitlin
  10. Chemistry

    Oxygen can be produced in the laboratory by the reaction 2 KClO3(s) → 2 KCl(s) + 3 O2(g) . How much potassium chlorate is needed to produce 2.75 L of oxygen, collected over water at 37◦C and 94.9 kPa? The vapor pressure of water at 37◦C is 6.28 kPa.

    asked by Caitlin
  11. math

    Beth Dahlke is taking a ten question multiple choice test for which each question has three answer choice only one of which is correct. Beth decides on answers by rolling a fair die and making the first answer choice if the die shows 1 or 2 the second if

    asked by Andrew
  12. Math

    if josh gives Emily 7 apples, she will have 5 times as many apples as Josh. If Emily gives Josh 7 apples, they will have the same number of apples. How many apples does each currently have?

    asked by Ben
  13. Physics

    The Alert Hiker: An alert hiker sees a boulder fall from the top of a distant cliff and notes that it takes 1.3s for the boulder to fall the last third of the way to the ground. a.What is the height of the cliff in meters? b.If in part (a) you get two

    asked by Zalak
  14. physics

    A 4.0-kg block is stacked on top of a 12.0-kg block, which is accelerating along a horizontal table at a = 5.2m/s2 . Let u=uk=us. (a) What minimum coefficient of friction u between the two blocks will prevent the 4.0-kg block from sliding off? (b) If u is

    asked by Anonymous
  15. statistics

    Entry to a certain University is determined by a national test. The scores on this test are normally distributed with a mean of 500 and a standard deviation of 100. Tom wants to be admitted to this university and he knows that he must score better than 70%

    asked by Michelle
  16. Chem

    Calculate the amount of grams of carbon dioxide formed from 100 g of octane. The molar mass of octane is 114.33 g/mole. The molar mass of carbon dioxide is 44.0095 g/mole/ 2 C8H18 + 25 O2 ---> 16 CO2 + 18 H20 How do I go about doing this problem? How much

    asked by Danya
  17. university physics

    A platinum resistance thermometer has resistances of 200.0 ohms when placed in a 0 degrees Celsius ice bath and 253.8 ohms when immersed in a crucible contacting melting potassium. What is the melting point of potassium? Hint: First determine the

    asked by Ella
  18. physics

    The pendulum on a cuckoo clock is 5.00 cm long. (a) Determine the period of this pendulum. (b) What is its frequency?

    asked by Jason
  19. physics

    a 100N force is applied at an angle of 30 degrees horizontal to move a 15kg object at a constant speed for a horizontal distance of 5m what would the work be

    asked by Layne
  20. physics

    A snapshot graph of a travelling wave is shown. The wave is travelling to the right at 10.4m/s. What is the amplitude if the maximum displacement is 26.6cm and the total distance travelled by the wave is 18.4m?

    asked by kim
  21. Math

    A class has 27 students. Fifteen are boys and the rest are girls. What is the ratio of girls to total students? 12 : 15 15 : 12 27 : 12 12 : 27

    asked by Eric
  22. math

    Phillip, the proprietor of a vineyard, estimates that the first 9600 bottles of wine produced this season will fetch a profit of $5 per bottle. However, the profit from each bottle beyond 9600 drops by $0.0002 for each additional bottle sold. Assuming at

    asked by Julie
  23. Maths

    Find the length of the parallel of latitude 42 degree north.

    asked by Tosin
  24. Maths

    An ant is crawling along the x-axis such that the graph of its position on the x-axis versus time is a semi-circle. The total distance covered in the 4 sec is 1. 4 m 2. 2 m 3. 2 pie m 4. 4 pie m

    asked by Parag
  25. Chemistry

    Hi I have a question So I have to determine the final concentration of NH4Cl in a calorimeter assuming reaction goes to completion. Given Measurements are: -delta T = 9.25 degrees Celcius -Density of NH4Cl = 1.013 g/mol -capacity of NH4Cl= 3.93 J/g*C

    asked by Anonymous
  26. physics

    A train travels at a constant speed around a curve of radius 225 m. A ceiling lamp at the end of a light cord swings out to an angle of 20.0º throughout the turn. Draw a free body diagram? What is the speed of the train?

    asked by Courtney
  27. Math

    There are 24 students in a class, 16 are girls and 8 are boys. What is the fraction of boys in the class?

    asked by Dar
  28. Chemistry

    The molar enthalpy of vaporization for water is 40.79 kJ/mol. Express this enthalpy of vaporization in joules per gram.

    asked by Rebecca
  29. finance

    Peyton’s Colt Farm issued a 30-year, 9.6 percent semiannual bond 6 years ago. The bond currently sells for 87.5 percent of its face value. The company’s tax rate is 38 percent. What is the pretax cost of debt? What is the after tax cost of debt?

    asked by juli
  30. PHYSICS

    while exploring a cave, a spelunker starts at the entrance and moves the following distances in a horizontal plane. she goes 75.0 m north, 250 m east, 125 m at an angle theta equal to 30.0 north of east, and 150 m south. find her resultant displacement

    asked by JOAN
  31. finance

    You take out a 25-year $210,000 mortgage loan with an APR of 12% and monthly payments. In 16 years you decide to sell your house and pay off the mortgage. What is the principal balance on the loan?

    asked by Anonymous
  32. social studys

    What was one cause of the English Civil War?

    asked by me
  33. Statistics

    According to insurance records a car with a certain protection system will be recovered 90% of the time. Find the probability that 5 of 6 stolen cars will be recovered.

    asked by Lexie
  34. grammar

    correct the grammar of the following text: Jason Turner thought he did the right thing when he had seen a man get into a car and drive off much too fast. A year earlier, another dangerous drive was injuring a friend of his, when he was knocking him off his

    asked by ali
  35. physics

    A 4.00 kg mass and a 3.00 kg mass are attached to opposite ends of a thin 32.2 cm long horizontal rod. The system is rotating at angular speed omega = 4.70 rad/s about a vertical axle at the center of the rod. Determine the kinetic energy K of the system.

    asked by Anonymous
  36. Physics

    The Flower Pot: A flower pot falls off a windowsill and falls past the window below. It takes .3 s to travel from the top of the window to the bottom of the window which is 2.2 m tall. From what height above the top of the window did the flower pot fall?

    asked by Zalak
  37. chemistry help!!

    For each of the following pairs, indicate which element has the larger first ionization energy Mg or Al. i put Mg. Repulsion of paired electrons in Mg is more significant than Al's higher effective nuclear charge. but got it wrong. Al. Repulsion of paired

    asked by Samantha
  38. PHYSICS

    The cutting tool on a lathe is given two displacements, one of magnitude 4 cm and one of magnitude 3 cm, in each one of five situations (a) through (e) diagrammed in the figure below. Rank these situations according to the magnitude of the total

    asked by JOAN
  39. chmistry

    a solutiona solution is made by dissolving 3.75g of a pure nonvolatile solute in 95g of acetone. the boiling point of pure acetone was observed to be 55.95 Centigrade that,and that of the solution was 56.50 Centigrade.if the molar boiling point elevation

    asked by bb
  40. statistics

    A vending machine is designed to dispense a mean of 7.6 oz of coffee into an 8-oz cup. If the standard deviation of the amount of coffee dispensed is 0.4 oz and the amount is normally distributed, find the percent of times the machine will a) dispense less

    asked by vinnie
  41. chem131

    if the equilibrium mixture contains 0.100M NO2, and N2O4 is 4.6 x 10-3 what is the concentration?

    asked by Anonymous
  42. Maths

    A geographical globe has a radius of 18cm.find the radius of the circleformed by the parallel of latitude 56 degrees south.

    asked by Tosin
  43. chemistry

    testing bronsted lowry reaction predictions...... im super stuck can someone help me steo by step how to figure this out assuming i use the 5 step process? write a balanced chemical equation for ch3coona and hcl reaction position of equilibrium. I know

    asked by Tara
  44. finance

    What is ICU’s pretax cost of debt? What is ICU’s pretax cost of debt? ICU Window, Inc., is trying to determine its cost of debt. The firm has a debt issue outstanding with eight years to maturity that is quoted at 110.5 percent of face value. The issue

    asked by juli
  45. finance

    Peyton’s Colt Farm issued a 30-year, 7.2 percent semiannual bond 6 years ago. The bond currently sells for 87.5 percent of its face value. The company’s tax rate is 38 percent. The book value of the debt issue is $103 million. In addition, the company

    asked by juli
  46. physics

    a uniform rod of mass M is hinged at its upper end. A particle of mass m moving horizontally strikes the rod at its midpoint elastically. If the particle comes to rest after collision find the value of M/m

    asked by OINDRILA
  47. Physics

    The Spent Rocket Parts: During launches, rockets often discard parts. A certain rocket starts from rest on the launch pad and accelerates upward at a steady 3.3 m/s2. When it is 235 m above the launch pad, the rocket discards a used fuel canister by simply

    asked by Zalak
  48. math

    Three-ninths of a soccer game is over. Is it halftime? explain

    asked by Anonymous
  49. mATH

    How much money has to be invested at 3.3% interest compounded continuously to have $45,000 after 19 years?

    asked by l;ll;,l
  50. Chemistry

    Aspirin tablet, mass of tablet= 0.4149 g concentration of iron III salicylate complex = 3.997E-4, What is the concentration of ASA in the original solution? What is the mass of ASA in the original solution? The procedure was as follows: accurately weigh by

    asked by Emma
  51. Chemistry

    A sample of oxygen is collected in a 387 mL container over water at 15◦C, and the barom- eter reads 738 torr. What volume would the dry gas occupy at 781 torr and 15◦C? Water’s partial pressure at 15◦C is 12.8 torr. Answer in units of mL

    asked by Caitlin
  52. Social Studies 8R help!!!!

    What is Ghost Town? I looked in my textbook it's not there. I checked in the glossary, I only see Ghost Dance. Please help

    asked by Laruen
  53. Physics. Error equations. Please help!

    These two equations concern a lab on the measurement of E/M by the Brainbridge Method. I need to derive the absolute error for two different equations, the first one is: e/m = 2V/B2R2 treat (e/m) as a SINGLE VARIABLE when doing the derivation. The second

    asked by Kyle
  54. chemistry

    The pressure in car tires is often measured in pounds per square inch (), with the recommended pressure being in the range of 25 to 45 . Suppose a tire has a pressure of 33.5 . Convert 33.5 to its equivalent in atmospheres.

    asked by David
  55. Physics

    Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.85 105 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.28 105 Pa and the pipe

    asked by Chelsea
  56. algebra

    A square flower bed is to be enlarged by adding 2 meters in each side. If the larger square has an area of 196 square meters, what is the length of the original square?

    asked by Rima
  57. chemistry

    Aspirin tablet, mass of tablet= 0.4149 g concentration of iron III salicylate complex = 3.997E-4, What is the concentration of ASA in the original solution? What is the mass of ASA in the original solution? The procedure was as follows: accurately weigh by

    asked by Emma
  58. Literature

    Why do you think the singer was an important person in Danish communities? (Beowulf)

    asked by Kathleen
  59. chemistry

    The pressure in car tires is often measured in pounds per square inch (), with the recommended pressure being in the range of 25 to 45 . Suppose a tire has a pressure of 37.0 . Convert 37.0 to its equivalent in atmospheres.

    asked by David
  60. Chemistry

    Al+S=Al2S3 Balanced equ= 2Al+3S=Al2S3 10 grams of Al were mixed with 15 gram of S Find: limiting reagent al or s? How much Al2S3 were formed in reaction? What is the excess reagent?Al or S? How much excuss reagent left over after reactin? Thanks!

    asked by malina
  61. math 121

    Henry will reject a cookie with less than 8 raisins.In the past, one out of every 100 cookies had less than 8 raisins. Find theprobability that the first cookie Henry rejects is the 5th cookie on the line.

    asked by stephen
  62. Health

    What are the 4 refusal skills

    asked by Paul
  63. Math 8R - Operating with Scientific Notation HELP!

    Rhode Island is the smallest state. It has an area of approximately 1.55 x10 (to the 3rd power) square miles. Alaska is the largest state. The area of Alaska is 4.28 x 10 (to the 2nd power) times greater than the area of Rhode Island. What is the

    asked by Laruen
  64. physics

    A force of 85 N is required to compress the spring by 0.0200 m. How much force is needed to compress the spring by 0.0600 N? 3.

    asked by Jason
  65. Chemistry

    A compound containing only C, H, and N yields the following data. (i) Complete combustion of 34.8 mg of the compound produced 33.3 mg of CO2 and 40.9 mg of H2O. (ii) A 66.3-mg sample of the compound was analyzed for nitrogen by the Dumas method, giving

    asked by Darrel
  66. phy

    Two constant forces act on an object of mass m = 4.50 kg object moving in the xy plane as shown in the figure below. Force 1 is 21.0 N at 35.0°, and force 2 is 47.0 N at 150°. At time t = 0, the object is at the origin and has velocity (3.70 + 2.25) m/s.

    asked by patel
  67. Algebra 2 help!!!

    What value completes the square for the expression? x2 + 14x Use the quadratic formula to solve the equation. x2 – 7x – 6 = 0 Simplify the expression. (–2i)(8i) What are the solutions? 1/2x^2 + 2x + 3 =0 I need help

    asked by Robert
  68. Math 8R: Operating w/ Sci.Notation HELP! (2ND QS)

    Yellowstone National Park has an estimated 2.5 x 10 (to the 6th power) visitors each year. The Great Smoky Mountains National Park is the most visited of all the National parks, and it has approximately four times the amount of visitors annually that

    asked by Laruen
  69. Chemistry

    The following three step mechanism has been proposed for the oxidation of iodide ion by peroxide: H2o2 + I^- ----> HOI + OH^- Slow OH^- + H^+ ----> H2O Fast HOI + H^+ + I^+ ---> I2 + H2O Fast A. What is the overall reaction described by this mechanism? B.

    asked by Krissy
  70. physics

    What mass on a spring with a spring constant of 120 N/m will oscillate with a period of 1.0 s?

    asked by Jason
  71. computer programming

    Mr. Dacara owns 20 apartment buildings. Each building contains 15 units that he rents 5,000 PhP per month each. He wants a program that will print 12 payment receipt coupons for each of the 15 apartments in each of the 20 buildings. Each coupon should

    asked by lady vhalyn
  72. chemistry

    how many electrons does Fe3+ gain or lose when the ion forms? A. gains 1 electron B. loses 1 electron C. gain 3 electrons D. loses 3 electrons I think D.

    asked by drew
  73. Chemistry

    Use van der Waals’ equation to calculate the pressure exerted by 2.33 mol of ammo- nia at −3.7◦C in a 1.25 L container. The van der Waals’ constants for ammonia are a = 4.00 L2·atm/mol2 and b = 0.0400 L/mol. (The values for a and b have been

    asked by Caitlin
  74. Chemistry

    Al_S=Al2S3 10 grams of Al were mixed with 15 gram of S Find: limiting reagent al or s? How much Al2S3 were formed in reaction? What is the excess reagent?Al or S? How much excuss reagent left over after reactin? Thanks!

    asked by mal
  75. Physics

    The Falling Paint Can: A painter is standing on scaffolding that is raised at a constant speed vi. As he travels upward he accidentally nudges a paint can off the scaffolding and it falls 15m to the ground. You are watching and measure with your stopwatch

    asked by Zalak
  76. chemistry

    Aspirin tablet, mass of tablet= 0.4149 g concentration of iron III salicylate complex = 3.997E-4, What is the concentration of ASA in the original solution? What is the mass of ASA in the original solution? The procedure was as follows: accurately weigh by

    asked by Emma
  77. math

    3mn,-5mn,8mn,-4mn

    asked by hanio
  78. English

    Identify the CAPITALIZED portion of the sentences below. 18. MY FRIEND MARY is coming with us to the zoo. complete predicate complete subject simple predicate simple subject 19. I think we should VISIT the monkeys first. complete predicate complete subject

    asked by Jman
  79. Physics

    A standing wave has wavenumber 200 rad/m. What is the distance between two adjacent nodes.

    asked by Anonymous
  80. college algebra--please help

    solve the following inequality 70x-51

    asked by Heather
  81. Physics

    The Colliding Balls: A ball is released from rest at a height h above the ground. The ball collides with the ground and bounces up at 75% of the impact speed the ball had with the ground. The collision with the ground is nearly instantaneously. A second

    asked by Zalak
  82. English

    1. Can you give me a rain check? 2. Can I take a rain check? 3. Can I have a frain check? 4. Can I get a rain check? (Are they all grammatical and the same? Which expression is commonly used?)

    asked by rfvv
  83. srinivas

    How many positive integers lessthan2009 are divisible byany one perfect square greater than 1678?:

    asked by emani
  84. Algebra

    Sharon Spent $2 on a magazine; then she spent half of the rest of her money on shoes. She spent half of her remaining money on lunch. She has $12 left. How much did Sharon start with? X= X+2+(a÷2)+(b÷2)+12 Thats correct?

    asked by Adalberto
  85. physics

    A balloon with a radius of 20.0 m at 6.0 oC is heated to 32.0oC. Find the new volume.

    asked by Anonymous
  86. Biology

    What role does the environment play in convergent evolution?

    asked by Jessi
  87. Physics

    A ball player hits a home run, and the baseball just clears a wall 17.0 m high located 127.0 m from home plate. The ball is hit an an angle of 35° to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1.0 m above the

    asked by .lex
  88. Math

    What is the word form for .3481?

    asked by Madelyn
  89. math

    for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x succes n=5,p=1/3, x=4

    asked by Andrew
  90. math

    for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x succes n=5,p=1/3, x=4

    asked by Andrew
  91. probabilities

    A bag contains 3 green balls. 2 red balls and a white ball. A boy randomly draws balls from the bag one at a time (with replacement) until a red ball appears. Find the probability that he will make at least 3 draws.

    asked by joanna
  92. physics

    A standing wave has a wavenumber 200 rad/m. What is the distance between two adjacent nodes?

    asked by Anonymous
  93. maths project

    in a class there are 46 students out of them 20 are girls and 26 are boys,find ratio

    asked by suraj
  94. pre-calc help !!!!!!!

    cos^2x-sin^2 x+1=cos x

    asked by Haley
  95. Maths

    in the following rings find all units, Zero divisors and idompotent elements and determine whether the ring is a field. a)Z2 b)Z5 c)Z10 NB z is integers( positive or negatives including zero z is integers( positive or negatives including zero

    asked by JESS
  96. Physics

    A person pulls a crate with 120 N of force against 100 N of friction a distance of 5 meters. Find the energy the person expends pulling the crate, the amount of energy converted to heat via friction, and the increase in the kinetic energy of the crate.

    asked by Samuel
  97. Thermochemistry, calorimetry

    The density of ice is 0.9168 g/cm3. The density of water is 0.9998 g/cm3. Calculate the difference between ΔU (internal energy) and ΔH (enthalpy) during the fusion of 2.5 moles of ice at atmospheric pressure.

    asked by Peter
  98. Civics

    1.The constitution grants the federal courts ____ in several different kinds of court cases. This gives them the authority to hear and decide cases properly brought before them. 2. The lowest federal courts are trial courts, which have ___, the authority

    asked by Alex
  99. Finance

    calculate the future value of $5,000, given that it will be held in the bank for five years and earn an annual interest rate of 6%

    asked by Anonymous
  100. Math

    In addition to the clues, he says that there is a five in the tens place,a seven in the ten-millions place, and a 3 in the hundred-thousands place. What number would fit with both sets of clues

    asked by yalianne sierra
  101. Chemistry

    Your Open Question Show me another » Chemistry help needed... Confused? The following reaction is first order and the rate constant is 2.35 x 10^-4 s^-1 at 20 degress C. 2 N2O5 -----> 2 N2O4 + O2 A.) What is the rate of reaction if the [N2O5]=.25 M? B.

    asked by Krissy
  102. algebra

    Do the equations x = 4y + 1 and x = 4y – 1 have the same solution? Justify your answer with an explanation or a graph. How might you explain your answer to someone who has not learned algebra?

    asked by Amber
  103. probability - confused

    A fair, six-sided die is rolled eight times, to form an eight-digit number. What is the probability that the resulting number is a multiple of 8? Express your answer as a common fraction. I think the last 3 digits have to be divisible by 8 to be a multiple

    asked by confused
  104. Physical

    The pencil line is made out of carbon atoms. Assuming that the average diameter of a carbon atom is 3.49x10^-10m, how many atoms thick is the pencil?

    asked by Sarah
  105. Finance

    whited inc. stock sells for $35.25 constant rate 4.50% per year required rate return is 11.50% what is stock expected price 5 years from now

    asked by lora
  106. english

    The identity that you stand up for can enslave you and close you to the rest of the world-murathan mungan What does this quote mean??

    asked by jada
  107. physics

    An object of mass m = 5 kg is suspended by three cables as shown in the figure. If the tension T2 in the horizontal cable is 12 N: 1) What is the angle ƒáƒn that the left cable makes with the horizontal?

    asked by reem
  108. a work having to do with thanksgiving and go

    unscramble this work rssatwee

    asked by Anonymous
  109. Chemistry: Le Chatelier's

    What happens when CoCl2 is added to the following system? Co(H20)6 + Cl + heat CoCl4 + 6H20?

    asked by Evelyn
  110. Algebra

    Sharon Spent $2 on a magazine; then she spent half of the rest of her money on shoes. She spent half of her remaining money on lunch. She has $12 left. How much did Sharon start with? X= X+2+(a÷2)+(b÷2)+12 Thats correct?

    asked by Adalberto
  111. algebra

    form a polynomial f(x) with real coefficients having the given degree and zeros. Degree 4; zeros:-3 +5i; 2 multiplicity 2 enter the polynomial f(x)=a(?)

    asked by Heather
  112. Chemistry

    Based on CaCo3 + 2HCl --> H2O + CO2 + CaCl. How many ml of 1.00 M NaOH should be used in the titration. 25ml of HCL and 750mg of Tums are combined to simulate an upset stomach.

    asked by Shane
  113. world geography

    According to the Ministerial Conference on the Protection of Forests in Europe (MCPFEs), sustainable forest development is defined by these three criteria.

    asked by alice
  114. Physics

    A box of mass 4 kg is resting on a table 1.5 m above the floor. There is also a ledge located 5 m above the floor. Find the gravitational potential energy of the box relative to the floor, and the gravitational potential energy of the box relative to the

    asked by Stu
  115. Chemistry

    Based on CaCo3 + 2HCl --> H2O + CO2 + CaCl. How many ml of 1.00 M NaOH should be used in the titration. 25ml of HCL and 750mg of Tums are combined to simulate an upset stomach.

    asked by Shane
  116. geometry

    triangle STR is an equilateral triangle. What is the value of x if the measures of the sides ate 7x+5,4x+14, and 10x-4 ?

    asked by Anonymous
  117. Social Studies

    1. Does only one baby blue whale drink 200 liters of its mother's milk every day? 2. Does only one African elephant eat about 200 kg of plants a day?

    asked by rfvv
  118. Science

    6. Absolute dating provides an age in years for the rocks tested. True False

    asked by Jman
  119. math

    Find the accumulated amount A, if the principal P is invested at an interest rate of r per year for t years. P = $2500, r = 3%, t = 3, compounded quarterly $ ?

    asked by Julie
  120. chemistry

    What is the complete decay series for 241 Am: show every alpha, beta and gamma decay product. What is the reason for beta and gamma products to be in the alpha chain?

    asked by What?
  121. physics

    A 4.5-kg block is hung from a spring causing the spring to elongate 12 cm. With what period will the spring oscillate if the spring was stretched 15 cm and released?

    asked by Jason
  122. social studys

    what is a fief?

    asked by me
  123. algebra

    use the rational zero theorem to list the potential rational zeros of the polynomial function. Do not attempt to find the zeros. f(x)=2x^7-x^5+8x^4+52

    asked by confused
  124. Math

    Round $6.60 to the nearest 25 cents.

    asked by Jill
  125. math

    How would you condense a logarithm expression into a single quantity if the logs have different bases?

    asked by Jamie
  126. Math

    I have to graph a function; there's an x and y input/output chart. Should I connect the points in my graph?

    asked by Cassidy
  127. math

    what times 60 equals 5076

    asked by brittney
  128. Managerial Finance

    The cost of capital for Goff Computers,Inc

    asked by Meredith
  129. chemistry

    in the formula for calcium bromide (CaBr2), what does the subscripted two indicate? A. the bromide atom has a charge of 2- B. the bromide atom has a charge of 2+ C. there are two bromide atoms for every calcium atom. D. there are two calcium atoms for

    asked by drew
  130. square roots

    Define the square root of a given number with the use of an example.

    asked by alexander
  131. MATHS

    Differntiate sin(sinx) using the product rule

    asked by LAURA
  132. maths project

    don't know

    asked by suraj
  133. Pre-calc

    Evaluate the trigonometric functions by memory or by contruscting appropriate triangles for the given special angles. (a) csc 30deg (b) sin pi/4

    asked by Courtney
  134. introduction to psychology

    Flashcard sets with a 'rewards' term meaning 'people do not always demonstrate the behaviors that they observe. according to albert bandura, a social cognitive psychologist, what is the key to demonstrating observed behaviors?'

    asked by seema
  135. probability please help!!

    A fair, six-sided die is rolled eight times, to form an eight-digit number. What is the probability that the resulting number is a multiple of 8? Express your answer as a common fraction. I think the last 3 digits have to be divisible by 8 to be a multiple

    asked by confused
  136. Multivariable Calculus

    A pentagon is formed by placing an isosceles triangle on a rectange. If the pentagon has fixed perimeter P, find the lengths of the sides of the pentagon that maximize the area of the pentagon.

    asked by Shayna
  137. college algebra--please help

    Form a polynomial f(x) with real coefficients having the given degree and zeros. degrees 5; zeros 1; -i; 7+i please show all work. I am having a hard time understanding this.

    asked by Heather
  138. math very hard

    A card is randomly drawn from a standard deck. An ace of hearts wins the grand prize; any other ace or heart wins a small prize. What is the probability of winning a small prize? Express your answer as a common fraction.

    asked by mathfailure
  139. Pre calculus

    Okay, I'm really fuzzy about my log and exponential chapter. For example, solving some exponential equation such as e^3x-7 x e^-2x=4e I assume I start this equation by taking the natural log of both sides, but how will I know just by looking at an equation

    asked by marcus
  140. srinivas

    If ABC is a triangle with AB, BC MEASURING p,q units respectively.Find the maximum area possible for that triangleABC

    asked by emani
  141. math

    about 7 tenths of the us population in 1991 believed saying 175,104,000 to be true. what was the population?

    asked by richie
  142. Math 8R - Operating with Scientific Notation HELP!

    In constructing the Mall of America in Minnesota, a total of 1.3 x 10 (to the 4th power) tons of steel were used. The Eiffel Tower in Paris, France consist of 7 x 10 (to the 3rd power) tons of steel. About how many times the amount of steel it took to

    asked by Laruen
  143. science

    a toy car is traveling .5 meters per second.It goes 3.5 seconds. how far did it travel.

    asked by mimi
  144. math

    for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x succes n=20,p=1/8, x=2 I know the answer but I do not know how to get to that. Answer is 0.268 should I reduce fraction?

    asked by Andrew
  145. Chemistry

    Hi, i am stuck on this question, how do I go about answering it? why are fluorine atoms normally found as part of fluorine molecules?

    asked by Ruth
  146. Pschology

    A developing field in psychology is called Positive Psychology. It is exploring ways to help people become happier and productive in life. Describe the field of positive psychology and provide your critique of this particular field. What does the research

    asked by Janice
  147. Algebra

    Write an expression equal to eight more than a number divided by 5

    asked by Anonymous
  148. science

    How are mammals and fish alike

    asked by Gio
  149. biostatistic

    recent suggestion is 60 min of exercise per day. A sample of 50 adults in a study of risk factor report exercising a mean of 38 min per day with a standerd deviation of 19 min .based on sampal data, is physical activity significantly less than recommended?

    asked by nono
  150. Science 8R - help

    What's the difference between kinetic and potential energy?

    asked by Laruen
  151. pre-calc help !!!!!!!

    #1 cos x+sec x=2 #2 (1+tan x)^2= 2 tan x+2 #3 cos^2x-sin^2 x+1=cos x please show all work & thanks

    asked by Haley
  152. university physics

    A mass m1 = 7.65 kg, is at rest on a frictionless horizontal surface and connected to a wall by a spring with k = 67.9 N/m, as shown in the figure. A second mass, m2 = 5.29 kg, is moving to the right at v0 = 15.3 m/s. The two masses collide and stick

    asked by bülent
  153. English

    1. Blue whales eat only krill. 2. There is a krill in the sea. 3. There are many krills in the sea. 4. There are much krill in the sea. 5. There are many krill in the sea. (Which ones are grammatical? Would you check them? Thank you.)

    asked by rfvv
  154. social studies

    Type a short character sketch of a fictional Puritan named Justice Johnson based on what you have learned about the Puritans. Make certain that you describe how he dresses, how he lives, what he believes, how he spends his time--in short, describe him so

    asked by lisbett
  155. understanding psychology

    What happens four weeks from conception and cell division?

    asked by seema
  156. epic

    A copper penny has a mass of about 4grams. A copper kettle has a mass of about 400 grams. What is true about the density of these two objects?

    asked by lynn
  157. chemistry

    the fluoride anion always carries a charge of 1- true or false I say true

    asked by drew
  158. social studys

    3. Christians and Muslims wanted to control the Holy Land because *of the region's gold mines. *they needed supplies for their armies. *it had valuable water resources. *they believed it was a sacred place.

    asked by me
  159. Calculus

    Find the area between y=e^-x and y=4(x-x^2.

    asked by James
  160. math30

    Find the amplitude, period, phase shift, and vertical displacement for: y=7sin5(x-85degrees)-1.2

    asked by alejandro
  161. English

    What other word can i use in place of By? By its excellent magic, the orange gives you vitamin c

    asked by rebecca
  162. Humanities

    give me the link about The Cause of The Decline of the Power of the Church

    asked by Ales
  163. eng

    is the sentence: "By using a statement that began with 'I,' Ramon was able to state his feelings clearly." a simple sentence or a complex sentence?

    asked by tom
  164. chemistry

    what is the formula for the arsenic ion. A. As3- B. As2- C. As, D. As3+ I say c.

    asked by drew
  165. Grammar

    Can you put (grin) in a sentence where it acts as direct object?

    asked by Ash
  166. Physical chemistry

    If a sample of AgCL is shaken with excess water and concentrated solution of sodium chloride, how would the equilibrium be affected

    asked by Novia
  167. physics

    Jessie exerted a force of 400N to move a box across the floor to a distance of5m in 4sec. What is his power is kilowatts? Megawatts? Horsepower?

    asked by Ahmad Alotaibi
  168. physics

    Jessie exerted a force of 400N to move a box across the floor to a distance of5m in 4sec. What is his power is kilowatts? Megawatts? Horsepower?

    asked by Ahmad Alotaibi
  169. physics

    Jessie exerted a force of 400N to move a box across the floor to a distance of5m in 4sec. What is his power is kilowatts? Megawatts? Horsepower?

    asked by Ahmad Alotaibi
  170. Math

    A boat travels 12 miles up a river, then returns to where it started. The trip upriver took one hour longer than the return trip. If the current is 3mph, find the speed of the boat

    asked by Tonya
  171. math2

    how to solve 2[5a-3(4a-b)]-4[8b+5(a-2b)]

    asked by jasmine
  172. physics

    Jessie exerted a force of 400N to move a box across the floor to a distance of5m in 4sec. What is his power is kilowatts? Megawatts? Horsepower?

    asked by Ahmad Alotaibi
  173. Algebra II - Word Problem

    A convenience store clerk can wait on 6 customers per minute. If customers arrive at an average rate of x people per minute, the time T spent in line is: T=1/6-x, where 0

    asked by John
  174. Physics

    Two Peaches, Two Seconds, One Roof: A peach is thrown straight up from the edge of the roof of a building. A second peach is dropped from the roof 2s later. a. If the height of the building is 60m what must the initial speed of the first peach be if both

    asked by Zalak
  175. algebra

    an online music vlub charges $4.75 for the first music download and $1 for each additional download write a rule describing the total fees f as a function of additional downloads d

    asked by vale
  176. Algebra II

    Find the x-value at which y=2x+5/x-3 is undefined.

    asked by John
  177. pre-calc

    cos x+sec x=2 if you could please show all work

    asked by Haley
  178. engineering

    Determine the resultant force and its inclination with ox

    asked by Tronick a'gitok
  179. math

    The graph of the polynomial function P(x) is shown. a. List the real zeros of P(x). b. List the turning points of P(x). c. State the left and right behavior of P(x).

    asked by tg
  180. trig

    find all the values of X between 0 and 2π such that cos(3x-π/2) = √3/2

    asked by diego sanchez
  181. math

    is 004.15 more than 010.1

    asked by Anonymous
  182. math

    decide on a topic which is adding more clubs for which they would like to collect data and design a survey for school which could really be used to convince the principal to do. Create 5-7 questions for the survey. Some of my questions for the survey are:

    asked by Emily
  183. Physics

    he graph of the velocity of a mass attached to a horizontal spring on a horizontal frictionless surface as a function of time is shown below. The numerical value of V is 5.48 m/s, and the numerical value of t0 is 8.97 s. a) What is the amplitude of the

    asked by Jalopy
  184. algebra

    jhon has $15 in his account for every week he works as a bag boy he earns $50 write an equation for the ammount of savings in his accountafter x amount of weeks.is this descrete or continuous?

    asked by vale
  185. pre-calc

    (1+tan x)^2= 2 tan x+2 please show all work

    asked by Haley
  186. Math

    Assuming that each corner must be pinned, what is the least number of drawing pins that you need to display four rectangular pictures of the same size and shape so that they can all be seen?

    asked by Jones
  187. math

    What is the radius of a circle whose circumference is 22m,formula;C=2 pi r

    asked by tobi
  188. Emily.

    Find the interval(s) where this function is increase and the interval(s) where it is decreasing: g(x)=e^(-x) Any work shown would also be greatly appreciated. Thank you!!

    asked by Math/Calc
  189. Physics

    An 80 kg man climbs a 50 m-high hill in 20 minutes. What is the average power in watts he expends climbing the hill?

    asked by Marc
  190. chemistry

    Chemical analysis of a germanium crystal reveals indium at a level of 0.03091 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Ge matrix is negligible, what is the density of free charge carriers (free

    asked by ira
  191. math

    Anthony earns an allowance for doing work at home .the first day he earns $1. ,$2. for the next two days,$3.for the next three days and so on and so on.If Anthony keep earning money this way ,on what day will he earn $6.?(2)Anthony saves all the money he

    asked by zack
  192. chemistry

    How many atoms of iron (Fe) are present in 4.0g of iron

    asked by steve
  193. maths

    for what value of P are (2P-1),7 and 3Pare three consecuctive term of an AP?

    asked by rohit singh
  194. Psychology

    Janet has been attending Killian High School for three years. At the beginning of her senior year, she enrolled in Ms. Brosham's English class. She heard from her two older siblings that Ms. Brosham was a hard-nosed, crusty teacher who did not tolerate

    asked by Kent
  195. math square root

    Indicate which of the following are true and which are false. for those that are false, change the UPPER-CASE expression to make the statement true. *Every integer is a WHOLE number * the quotient of two non zero numbers is always a RATIONAL number * the

    asked by alexander
  196. ENGLISH

    Can someone tell me what is Elite tourism?

    asked by alexander
  197. college algebra

    find the complete zeros of the polynomial function. write f in factored form. f(x)=x^3-7x^2+25x-39 please show all work. I do not understand this.

    asked by Heather
  198. math

    23/24-15/24

    asked by jaelah mays
  199. college algebra--please help

    Find a bound on the real zeros of the polynomial f(x)=x^4+4x^3-8x-6 can someone help me, I am confused and don't know where to start.

    asked by confused
  200. English

    Please check it for me ;) "The text is about a lonely boy - Mark - son of murderer. As far as Mark's father is concerned he was drank before accident. Once upon a time when he was drunk he decided to back home by car. He should have come back by foot.

    asked by S.
  201. algebra 11

    (K+1)x+2y=6; M=k-2

    asked by karen
  202. 7th grade social studies

    In the Earth's Sourthern Hemisphere, what season begins in March? Spring Summer Fall Winter

    asked by Destiny
  203. TRIG HELP

    find the exact solutions over the interval tanx = 1 all real x

    asked by Matt
  204. math

    P: Solve each to four decimal places (x real and 0 in degrees) 5 cos x - 2 = 0, 0

    asked by john
  205. algebra

    A roast chicken is done with the temperature of the thigh meat is between 165 and 175. Write a compound inequality to represent the temperature at which a roast chicken is done.

    asked by Ian
  206. square roots

    Describe the Number systems used in mathematics with the use of subsets of the real number system.

    asked by lisa
  207. math

    Divide 1.632 divided by 1000

    asked by Anonymous
  208. Physics

    A ball is thrown straight up in the air at an initial speed of 30 m/s. Using conservation of energy, find the maximum height of the ball.

    asked by Joey
  209. probability

    Im not good at probability. If there are 3 choices, and 3 people can choose any of them, what are the odds of the 3 people choosing all different choices?

    asked by mathfailure
  210. math

    A customer uses a $20 bill at a self check-out register to pay for products totaling $14.50. The customer is concerned they did not receive the proper change. How much money should they have received back from the automated register?

    asked by Anonymous
  211. math

    A customer uses a $20 bill at a self check-out register to pay for products totaling $14.50. The customer is concerned they did not receive the proper change. How much money should they have received back from the automated register?

    asked by Anonymous
  212. math

    A customer uses a $20 bill at a self check-out register to pay for products totaling $14.50. The customer is concerned they did not receive the proper change. How much money should they have received back from the automated register?

    asked by Anonymous
  213. Precalculus

    Solve (log x)^2 = log x Also, when will their be a possibility that an equation will have an extraneous solution? Like if you got two solutions for a log equation, will a negative solution for x automatically be extraneous?

    asked by marcus
  214. science

    which household items contain acids?

    asked by aqsa khan
  215. Math

    This is a first grade problem my sister is having trouble. It is enrichment 5-5 " at the carnival" it says how many ways can Amanda ride all 3 rides? We need help cause I don't even know it myself!

    asked by Gabby
  216. chemistry

    Reaction between H2O2 +2NaOH

    asked by Anup
  217. financial management

    Suppose you invest $2,500 in an account bearing interest at the rate of 14% per year. What will the future value of your investment in six years?

    asked by Candice
  218. Social Studies 8R help!!!!

    On my study guide my teacher gave the class it says voter suppression in my textbook it says the definition of suppression is that the definition?

    asked by Laruen
  219. 15-75-90 triangle??

    what is the formula for these triangles ?

    asked by mathfailure
  220. chemistry

    why do beryllium and flourine combine in a 1 : 2 ratio ?

    asked by Anonymous
  221. math

    Solve each equation by testing the given values for a variable y-9=11 y=18, 19, or 20

    asked by Gio
  222. Chemistry

    Calculate pH of NH4OH which is 1%ionized

    asked by sara
  223. Social Studies 8R help!!!!

    Who was the President of the Confederacy?

    asked by Laruen
  224. Physics

    A box is being pushed to the left parallel to the x-axis by a force of 23.0 N. A rope provides a second force of 33.8 N on the box, directed to the right at an angle of 39.0 deg. from the x-axis. What is the magnitude of the net force acting on the box ?

    asked by Zack
  225. English

    If there is much running water from the faucet, the water becomes lukewarm. So you should turn down the faucet a little so that it has little running water, and then the water will become more warm or hot. Then the baby in the bath tub will not feel cold.

    asked by rfvv
  226. MATH 112

    two planes leave an airport at the same time. Their speeds are 320 miles per hour and 380 miles per hour. If the angle between their courses is 112 degrees, how far apart are they after two hours? (The hint is using the law of cosines)

    asked by diego sanchez
  227. sound and hearing

    An excited child in a campground lets out a yell. Her parent, 1.31 m away, hears it as a 89.3-dB sound. A climber sits 701 m away from the child, on top of a nearby mountain. How loud does the yell sound to the climber? (in dB) A: 34.731 dB this is my

    asked by bülent
  228. college algebra

    Solve the inequality algebraically 11x-3¡Ý-4x^2

    asked by Heather