Questions Asked on
April 2, 2014

  1. Calculus Help Please!!!

    A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 40 cm/s. Find the rate at which the area within the circle is increasing after each of the following. after 1 s = after 3 s = after 7 s =

    asked by Tim
  2. Physics -- check answers please

    1. A boy pushes a car to slow it down while the car is rolling horizontally down the road. If the boy pushes backwards on the car with 10N of force as the car rolls forward 3.0m, the amount of work done by the boy is: a)-30 b)0 c)3.3 J d)30 N•m e)300J my

    asked by Jessica
  3. Calculus Help Please

    let f(x)=(x-1)^2, g(x)=e^(-2x), and h(x)=1+ ln(1-2x) find linearization of f, g, and h at a=0 Lf(x)= Lg(x)= Lh(x)= graph f,g, and h, and their linear app. For which function is the linear app. best? for which is the worst? explain. the linear app. appears

    asked by Ahmed
  4. business Math

    Lane French had a bad credit rating and went to a local cash center. He took out a $100 loan payable in two weeks at $115. What is the percent of interest paid on this loan? (Do not round intermediate calculations. Round your answer to the nearest whole

    asked by marie
  5. calculus help thanks!

    The gas law for an ideal gas at absolute temperature T (in kelvins), pressure P (in atmospheres), and volume V (in liters) is PV = nRT, where n is the number of moles of the gas and R = 0.0821 is the gas constant. Suppose that, at a certain instant, P =

    asked by Pal
  6. business mat

    Carol Miller went to Europe and forgot to pay her $740 mortgage payment on her New Hampshire ski house. For her 59 days overdue on her payment, the bank charged her a penalty of $15. What was the rate of interest charged by the bank?

    asked by marie
  7. Algebra II

    A rowing team rowed 50 miles while going with the current in the same amount of time as it took to row 25 miles going against the current. The rate of the current was 2 miles per hour. Find the rate of the rowing team in still water.

    asked by Brice
  8. Calculus Help Please!!! Check

    When a cold drink is taken from a refrigerator, its temperature is 5°C. After 25 minutes in a 20°C room its temperature has increased to 10°C. (Round the answers to two decimal place.) (a) What is the temperature of the drink after 60 minutes? (b) When

    asked by Tenshi
  9. UCF

    What will be the change in enthalpy when 100.0 g of butane, C4H10, is burned in oxygen as shown in the thermochemical equation below? 2 C4H10(l) + 13 O2(g) → 8 CO2(g) + 10 H2O(g) ΔH = −5271 kJ −2636 kJ −4534 kJ −9087 kJ −1.817 × 104 kJ

    asked by Alex
  10. Physics

    I already figured out the answers to some but I need help with two more. 1) A disk with an initial angular velocity ω0 = 4.5 rad/s experiences a constant angular acceleration of α = 7.5 rad/s2 for time t = 15 s. Please answer the following questions. ω0

    asked by Michelle
  11. Math

    The entrance hall to the Louvre Museum in Paris is a glass and metal pyramid with a surface area of approximately 1980 square on each side . The base of the pyramid is a square that is 35.4 meters on each side. What is the slant height of the pyramid ?

    asked by Bob
  12. Business Math

    Joanne and Ed Greenwood built a new barn with an attached arena. To finance the loan, they paid $1,307 interest on $45,000 at 4.0%. What was the time, using exact interest? (Do not round intermediate calculations. Round up your answer to the nearest day.)

    asked by marie
  13. chemistry

    "Write equations for the half-reactions that occur at the anode and cathode for the electrolysis of the following aqueous solution: CuBr2(aq)" Possible oxidation reactions: 1. 2Br- -> Br2 + 2e- = -1.09 2. 2H2O -> O2 + 4H+ + 4e- = -1.23 Possible reduction

    asked by Kate
  14. algebra

    Suppose that the weight (in pounds) of an airplane is a linear function of the total amount of fuel (in gallons) in its tank. When graphed, the function gives a line with a slope of 6.2. With 52 gallons of fuel in its tank, the airplane has a weight of

    asked by kent
  15. Equation help 2 questions

    How many real number solutions does the equation have y=-4x^2+7x-8 none one two infinite How many real number solutions does the equation have y=3x^2+18x+27 none one two infinite Thank you!

    asked by Alex
  16. Math (check answer)

    1.never the difference of two positive integers is _____ negative. A.always B.sometimes C.never

    asked by matt
  17. Reading Skills

    This question is based on the following four sentences. 1. Netta and Jim argued over their views of free trade. 2. Netta and Jim had different views on free trade. 3. Netta and Jim were sharply split over the issue of free trade. 4. Netta and Jim refused

    asked by Emily
  18. physics

    The mass of an iron cube having an edge length 1.8 cm is 70 g. Find itd density.

    asked by Naeem
  19. Spanish

    Are my answers correct? I had the most trouble with the accents in part II. Thank you. Part I Llene los espacios en blanco con la forma correcta del verbo en la forma del presente progresivo utilizando el verbo ESTAR con el gerundio. 1. Sé que vosotras no

    asked by Anna
  20. Probability

    A defective coin minting machine produces coins whose probability of Heads is a random variable Q with PDF fQ(q)={3q2,0,if q∈[0,1],otherwise. A coin produced by this machine is tossed repeatedly, with successive tosses assumed to be independent. Let A be

    asked by A
  21. Science (chemistry)

    Write a balanced chemical equation and state the reaction type for each of the following reactions: a.) nitrogen gas reacts with hydrogen gas forming ammonia (NH3) b.) carbonic acid breaks down to form carbon dioxide gas and water c.) aluminum foil reacts

    asked by Anonymous
  22. Chemistry help

    Sulfur trioxide is formed by the catalytic oxidation of sulfur dioxide: 2SO2(g)+O2(g)→2SO3(g) If ΔH∘= -197.8kJ/mol and ΔS∘= -188.0J/K , what is ΔStotal for this reaction? Is the reaction spontaneous under standard-state conditions at 25 ∘C?

    asked by Emily
  23. Chemistry

    If the activation energy for a given compound is found to be 42.0 kJ/mol, with a frequency factor of 8.0 × 1010 s-1, what is the rate constant for this reaction at 298 K?

    asked by Kelsei
  24. math

    the current ratio of boys to girls at a certain school is 2 to 5 . if 12 additional boys were added to the school, the new ratio of boys to girls would be 4 to 9. how many boys currently attend the school?

    asked by Anonymous
  25. Physics

    A satellite is given a boost of 540 MJ of energy to move it from its initial orbit at an altitude of 150 km to a higher altitude orbit. If the satellite has a mass of 1.16 ✕ 10^3 kg, what is the new altitude it reaches? Take the mass of the Earth to be

    asked by Dan
  26. Chemistry

    Write a balanced chemical equation that represents the self-ionization of water. (Use the lowest possible coefficients. Include states-of-matter at 1 atm and 25°C in your answer.)

    asked by Grace
  27. calculus

    Let C(t) be the total value of US currency (coins and banknotes) in circulation at time. The table gives values of this function from 1980 to 2000, as of September 30, in billions of dollars. Estimate the value of C(1990) . t 1980 1985 1990 1995 2000 C(t)

    asked by juli
  28. Probability

    Alice has two coins. The probability of Heads for the first coin is 1/3, and the probability of Heads for the second is 2/3. Other than this difference, the coins are indistinguishable. Alice chooses one of the coins at random and sends it to Bob. The

    asked by A
  29. chemistry

    I'm stuck on this problem and only have 2 attempts left. The Ksp of Zn(OH)2 is 1.8x10^-14. Find Ecell for the following half-reaction. Zn(OH)2(s) + 2e^- Zn(s) +2OH^-(aq) So far I've tried using the following methods, none of which have worked... Ecell =

    asked by Jamie
  30. Algebra II

    Ravi is going to rent a truck for one day. There are two companies he can choose from, and they have the following prices. Company A charges $75 and allows unlimited mileage. Company B has an initial fee of $55 and charges an additional $0.80 for every

    asked by Bryan
  31. Astronomy

    Another star cluster ("star cluster 2") lies 7.4 Mega-parsecs from the starship, and has an apparent radius of 6.3 arc seconds. You would like to know how big it is. Is it the same size as galaxies in our universe (i.e. tens of kilo-parsecs) or only as big

    asked by keitanako
  32. Math

    My pattern is 509, 517, 525, 533, 541. What is the place value to describe how the numbers change?

    asked by Gabriel
  33. Physics

    In a relay race the second runner does not start from rest. it covers 100 m in 10 sec, finishing with maximum velocity of 12 m/sec, assuming the constant acceleration, determine his initial velocity. ??

    asked by NoBody
  34. Chemistry-Gases

    A common laboratory preparation of hydrogen on a small scale uses the reaction of zinc with hydrochloric acid. Zinc chloride is the other product. (a) If 13.0 L of H2 at 765 torr and 20.0 °C is wanted, how many grams of zinc are needed, in theory? (b) If

    asked by Anonymous
  35. Chemistry

    Consider a 0.10 M solution of a weak polyprotic acid (H2A) with the possible values of Ka1 and Ka2 given below, calculate the contributions to [H3O+] from each ionization step. Part 1: Ka1=1.0*10^-4 Ka2=1.0*10^-5 Part 2: Ka1=1.0*10^-4 Ka2=1.0*10^-6

    asked by Chay
  36. Physics

    In a relay race the second runner does not start from rest. it covers 100 m in 10 sec, finishing with maximum velocity of 12 m/sec, assuming the constant acceleration, determine his initial velocity. ??

    asked by ABCD
  37. Reading Skills

    8. Below is the last stanza of a poem, "Dover Beach," written in 1876 by Matthew Arnold. Ah, love, let us be true To one another! for the world, which seems To lie before us like a land of dreams, So various, so beautiful, so new, Hath really neither joy,

    asked by Emily
  38. Algebra

    What is the focus and directrix of the graph: x-3y^2=0?

    asked by anonymous
  39. math

    Find the foci x^2/49 + y^2/36 = 1

    asked by kim
  40. business mat

    On September 14, Jennifer Rick went to Park Bank to borrow $2,500 at formula9.mml interest. Jennifer plans to repay the loan on January 27. Assume the loan is on ordinary interest. (Use Days in a year table.) a. What interest will Jennifer owe on January

    asked by marie
  41. Probability

    Let Θ be a Bernoulli random variable that indicates which one of two hypotheses is true, and let P(Θ=1)=p. Under the hypothesis Θ=0, the random variable X is uniformly distributed over the interval [0,1]. Under the alternative hypothesis Θ=1, the PDF

    asked by A
  42. Probability

    Let T1,T2,…,Tn be i.i.d. observations, each drawn from a common normal distribution with mean zero. With probability 1/2 this normal distribution has variance 1, and with probability 1/2 it has variance 4. Based on the observed values t1,t2,…,tn, we

    asked by A
  43. math

    write a number on each section of a hexagon so that the probability of getting an odd number is 1/3

    asked by jes
  44. Spanish 101

    Choose the logical word or words to complete each sentence. 1. A mis hermanos y a mí nos____ aprender verbos nuevos. 1 encanta 2 encantamos 3 encanto 4 encantan I chose answer 2 ecantamos 2. A mi papá ____ molestan los niños traviesos. 1 los 2 me 3 se 4

    asked by Ashley
  45. Equation help

    A physics student stands at the top of a hill that has an elevation of 56 meters. he throws a rock and it goes up into the air and then falls back past him and lands on the ground below. The path of the rock can be modeled by the equation y=0.04x^2+1.3x+56

    asked by Alex
  46. Family

    What career is more worthy to go to college for and save the most money? A.) Vet Tech B.) Preschool/Kindergarden Teacher C.) Pilot D.) Manager A or B ??

    asked by Molly
  47. Chemistry

    Write the balanced chemical equation for each of the following. (Use the lowest possible coefficients. Include states-of-matter at 1 atm and 25unknown_prefixC in your answer.) (a) the dissociation of solid magnesium hydroxide in water

    asked by Grace
  48. math

    Suzanne wants to put a fence around her square garden. If the garden covers an area of 100 ft2, how many feet of fencing does she need? (1 point) 20 ft 40 ft 10 ft 400 ft

    asked by zuha
  49. Chemistry

    Write the balanced chemical equation for each of the following. (Use the lowest possible coefficients. Include states-of-matter at 1 atm and 25unknown_prefixC in your answer.) (b) the reaction of magnesium metal and hydrobromic acid

    asked by Grace
  50. math

    find the median for the given frequency score, x = 1,2,3,4,5,6,7,8,9,10 frequency, f = 1,1,3,3,5,7,5,5,7,1

    asked by carol
  51. Calculus

    If y = y(x), write y’ in Leibniz notation.

    asked by bex
  52. Accounting

    During the current year, Mast Corporation expects to produce 10,300 units and has budgeted the following: net income $350,376; variable costs $1,080,800; and fixed costs $105,000. It has invested assets of $1,459,900. The company’s budgeted ROI was 24%.

    asked by Kristina
  53. Algebra

    The formula r=2sqrt(...)5L can be used to approximate the speed r, in miles per hour, of a car that has left skid marks of length L, in feet. How far will a car skid at 70mph?

    asked by George
  54. World Civilizations

    Mansa Musa was the ruler of the African kingdom of A. Mali. B. Morocco. C. Egypt. D. Ghana.

    asked by Pirurris
  55. algebra 2

    Find the points where these quadratic relations intersect. 16x^2-5y^2=64, 16x^2+25y^2-96x=256

    asked by Taleigh Glass
  56. spanish

    if someone could help me conjugate these words correctly id really appreciate it!(sorry, I was unable to put accentos) 1. ?Habra alguien que me (comprender)? 2. Querian que tu (ir) a la biblioteca. 3. Tomas fue a la carcel porque (robar)a alguien. 4. Era

    asked by devon
  57. economics

    how do you think our nations output should be distributed ? by income?

    asked by Anonymous
  58. slope

    What does the line y = 3x - 7 look like?

    asked by Anonymous
  59. Physics

    Consider the following distribution of objects: a 4.00-kg object with its center of gravity at (0, 0) m, a 1.20-kg object at (0, 3.00) m, and a 5.40-kg object at (2.00, 0) m. Where should a fourth object of mass 7.00 kg be placed so that the center of

    asked by Joe
  60. chemistry

    0.50 mol of Fe react with 0.60 mol of O2, how many moles of Fe2O3 will form?

    asked by matt
  61. Chemistry quick question

    For the following write the chemical formulas for the reactants and predict the most likely reaction type , then write balanced equations for each: A.) magnesium chloride is heated b.) silver nitrate is reacted with sodium sulfide c.) methanol is burned in

    asked by Anonymous
  62. physics college level

    A 2.0-kg block is projected up a frictionless inclined plane with a speed of 10 m/s. The angle of inclination is 30o . The block goes a distance of _____ up the plane before stopping. Assume g = 10 m/s2

    asked by spencer
  63. math

    In a photograph, a man is 1.3cm tall and a flagpole is 4.8cm tall. If the man is 190 cm in real life, how tall is the flagpole, to the nearest centimetre?

    asked by kagney
  64. Reading Skills

    This question is based on the following information about The Call of the Wild, a book by Jack London. The Call of the Wild is a story about a dog named Buck. Buck is a pampered dog who lives with a wealthy family in southern California. During the Gold

    asked by Emily
  65. physics

    A billiard ball of mass m = 0.250 kg hits the cushion of a billiard table at an angle of θ1 = 70.0° at a speed of v1 = 2.50 m/s. It bounces off at an angle of θ2 = 63.0° and a speed of v2 = 2.10 m/s.

    asked by Anonymous
  66. Reading Skills

    This question is based on the following paragraph. (1) 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

    asked by Emily
  67. algebra

    simplify: 6sqrt7-sqrt7 A. 6 sqrt7 B. 5 sqrt 7 C. 5 D. 6 Simplify: 2sqrt12+ sqrt3 A.5sqrt3 B. 3sqrt3 C. 2sqrt15 D. 3sqrt15 Need help on these please

    asked by ciara
  68. Chemistry

    please help me balance these equations using the method of half reactions.. Na + HCL = NaCl + H2 Pb + PbO2 + H2SO4 = PbSO4 +H2O Thank you, even a little help is appreciated.

    asked by Justin
  69. speech-english

    derick decided that he would focuse his report on their traditional homes called gers which visual aids are most likely to be helpful 1object-2chart 3model-4graph-5photographs 6video-7flipchart

    asked by tina
  70. Chem

    A 75.0 mL volume of 0.200 M NH3 (Kb=1.8x10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 28.0 mL of HNO3.

    asked by Billy Bob Reynolds
  71. World Civilizations

    Although the demand for slaves was great, Angolan and Brazilian merchants only permitted a steady trickle of slaves into Brazil because A. there was anxiety over importing tropical diseases that were rife in West Africa. B. importing too many slaves would

    asked by Pirurris
  72. Algebra Question~!

    Suppose you divide a polynomial by a binomial. How do you know if the binomial is a factor of the polynomial? Create a sample problem that has a binomial which IS a factor of the polynomial being divided, and another problem that has a binomial which is

    asked by Gabby
  73. Chemistry

    You have a solution of 0.15M Ba(OH)2 and a solution of H2SO4 whose concentration you want to determine. You start with 25 ml H2SO4 in the Erlenmeyer and titrate in the Ba(OH)2. At the end of the titration, you find that you have used 20.4 ml Ba(OH)2 and an

    asked by Mike Jones
  74. trig

    Help! Ships A and B leave port at the same time and sail on straight paths making an angle of 60 degrees with each other. HOw far apart are the ships at the end of 1 hour if the speed of ship A is 25 km/h and that of ship B is 15 km/h?

    asked by Anonymous
  75. physics

    What linear speed must a 0.0508-kg hula hoop have if its total kinetic energy is to be 0.164 J? Assume the hoop rolls on the ground without slipping.

    asked by Tsion
  76. Equations

    How many real number solutions does the equation have y=3x^2+18x+27 none one two infinite

    asked by Alex
  77. math

    a number of children chose roald dahl multiplied by a number of children who chose C.S Lewis is 735. 14 more chose Jacquline wilson. how many chose Jacquline wilson and how many chose roald dahl

    asked by shania
  78. English

    What is 'paps room'?

    asked by rfvv
  79. math

    Adam and Bob went apple picking in an orchard. At the end of the day, they realized that if Adam had picked 50 more apples, he would have picked twice as many as Bob picked. On the other hand, if Bob had picked 50 more apples, he would have picked twice as

    asked by anna
  80. english-poetry

    what is a good haiku poem on the school cafeteria?

    asked by anonymous
  81. math

    Alvin, Calvin and Melvin each have some positive integer number of sweets. Alvin has fewer sweets than Calvin, and they have 29 sweets in total. Melvin has 26 sweets more than Alvin. What is the maximum number of sweets that they can all have in total?

    asked by anna
  82. English

    can you do a poem for me,because i don't know how to do it???

    asked by bobi
  83. computer science

    Developing a habit to write good essays and dissertations can bring lots of accolades from faculty to any student. Does that mean each of the children can be expected to do it with similar success? Itâ€â„¢s a bit too much to ask

    asked by dissertation writing help
  84. PRE CALC

    The 20th term of an arithmetic sequence is 27 and the first term is -11. What is the common difference??

    asked by Aly
  85. math

    A product cost $100, 90% of the price being production cost,the remainder being tax, if the govt raises the tax by 50%, by how much in % will the factory have to reduce its production cost to keep he price still at $100

    asked by Anonymous
  86. business mat

    Abe Wolf bought a new kitchen set at Sears. Abe paid off the loan after 60 days with an interest charge of $9. If Sears charges 10% interest. What did Abe pay for the kitchen set? (Use 360 days a year. Do not round intermediate calculations.)

    asked by marie
  87. probability

    The vertical coordinate (“height") of an object in free fall is described by an equation of the form x(t)=θ0+θ1t+θ2t2, where θ0, θ1, and θ2 are some parameters and t stands for time. At certain times t1,…,tn, we make noisy observations Y1,…,Yn,

    asked by A
  88. chemistry

    G=NEV

    asked by Anonymous
  89. arithmetic

    Ana sees a computer that costs $1600. The store manager says next week will be on sale $350 less. What percent will Ana save

    asked by Anonymous
  90. mathematics

    equation 2x-3y=10 touches the circle with centre m (-2,4)

    asked by xolani
  91. Finance

    Kim has money in a savings account that earns an annual interest rate of 4.1%, compounded monthly. What is the effective rate of interest on Kim's account? Round to the nearest hundredth of a percent.

    asked by Lynn
  92. add maths

    10^2n+3 × 20^n × 5^n Step:? Answer:10^4n+3

    asked by mandy
  93. Math help

    1. The number of students present in class & the number of empty chairs Type of correlation: Justification: Independent variable: Dependent variable: 2. Speed of car & distance traveled to complete stop after brakes are applied Type of correlation:

    asked by Anonymous
  94. economics

    how to derive marginal utility of income?

    asked by geet
  95. statistics

    Since, in general, the longer a car is owned the more miles it travels one can say there is ______ between age of a car and milege. a positive association, no association, a negative association, a scattered association

    asked by Sarah
  96. Word problem

    . A catapult launches a boulder with an upwark velocity pf 184 feet per second. the heigh of the boulder in feet after t seconds is given by the function h(t)=-16t^2+184t+20. how long does it take the boulder to reach its maximum height? What is the

    asked by Alex
  97. Calculus

    If g(x) = a f(x); find g’(x). Is it g'(x)=af?

    asked by bex
  98. Chemisty

    The voltage generated by the zinc concentration cell (described by, Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s)) is 27.0 mV at 25 °C. Calculate the concentration of the Zn2 (aq) ion at the cathode.

    asked by Chem. Student
  99. Math

    Parallel lines are on a ?-dimensiona; surface called a _____.

    asked by Anonymous
  100. english

    Are you learning english

    asked by saleem
  101. Math

    A and B had an equal numbers of cupcakes at first. After B bought twice as many cupcakes as he had at first and A gave away 26 cupcakes, B had 6 times as many cupcakes as A. How many cupcakes did A have at first?

    asked by Qi
  102. calcules

    The demand for rice in Japan for a particular year was estimated by the general function q = f (p) =Ap^(-0.13), where p represents the price of a unit of rice, A represents a constant that can be calculated uniquely for a particular year, and q represents

    asked by Merfit
  103. Finance

    Direct send-Single. Ocean Research of San Diego, California, just received a check in the amount of $800,000 from a customer in Bangor, Maine. If the firm processes the check in the normal manner, the funds will become available in 6 days. To speed up this

    asked by Anonymous
  104. math

    suppose a normal distrubtion has a mean of 25 and a standard deviation of 2. what is the area under the curve between 23 and 27

    asked by elizabeth
  105. math

    Andrew borrows $79,500 for 5 months on 6.30% interest rate in his saving account. Calculate the simple interest?

    asked by Anonymous
  106. Chemistry

    A current of 5.41 A is pass through a Ni(NO3)2 solution. How long (in hours) would this current have to be applied to plate out 7.30 g of nickel?

    asked by At Least I Am Persistent.
  107. Math

    This problem from China is almost 2000 years old: Find a number that when divided by 3 gives a remainder of 2, when divided by 5 gives a remainder of 3, and when divided by 7 gives a remainder of 4.

    asked by Ashley
  108. math

    In English Class, after studying a book called \The Lord of the Flies" by William Golding, students are split into 6 groups and each group is required to make a fi lm based on one of the 8 important scenes in the novel. Each group can choose which scene

    asked by Aditya
  109. economics

    Do you feel there are any imbalances to our wage structure in our economy?

    asked by tiffany
  110. calculus

    a farmer wishes to fence off a rectangular plot of land, using an existing wall as one of the sides . the total are enclosed must be 600 square yards. the fence on the side parallel to the wall will cost 20$ per yard, while the fences on the other side

    asked by tttt
  111. health

    In the United States, the highest reported rates of infection of gonorrhea are among sexually active ________. A. Teenagers B. Young Adults C. African Americans D. All of the above It's not B, i get it and was wrong. Please help

    asked by mix_lks
  112. health

    Women with bacterial vaginosis may have ________. A. Burning during urination B. No obvious symptoms C. Abnormal !@#$%^&l discharge with an unpleasant odor D. Both A and C It's not C

    asked by mix_lks
  113. statistics

    An experiment was conducted to determine the abrasion resistance of a new type of automobile paint. Twelve different strips of metal were painted with the new paint. The abrasion resistance of each piece was then tested on a machine. In the sample, the

    asked by Nicky
  114. calculus

    revenue function of x^2+3p=675

    asked by tttt
  115. health

    ________ is the most frequently reported bacterial sexually transmitted disease in the United States. A. Chlamydia B. Syphilis C. Herpes D. Gonorrhea It's not C.

    asked by mix_lks
  116. maths

    I am a quadrilateral. All my sides are equal. I have no parallel sides. I have one line of symmtry. What am I?

    asked by What am I ?
  117. social studies

    how was the south carolina constitution of 1868 different from earlier versions?

    asked by laila
  118. statistics

    For each combination of sample size and sample proportion, find the margin of error for the 95% confidence level. (a) n=100 and p-hat=.56 (b) n=400 and p-hat=.56

    asked by Nicky
  119. Algebra II

    Flying against the wind, a jet travels 3220 miles in 7 hours. Flying with the wind, the same jet travels 2820 miles in 3 hours. What is the rate of the jet in still air and what is the rate of the wind?

    asked by Jamie
  120. Math help

    A catapult launches a boulder with an upwark velocity pf 184 feet per second. the heigh of the boulder in feet after t seconds is given by the function h(t)=-16t^2+184t+20. how long does it take the boulder to reach its maximum height? What is the boulders

    asked by Alex
  121. wold geography

    the vist of an influential nuclear physicst to population symposium in1979 led to

    asked by carol
  122. science question?

    can someone explain this to me? When the temperature is 68°F, the speed of sound in air is approximately 343 meters per second. Approximately how many kilometers does sound travel in five seconds?

    asked by matt
  123. math

    Given a set with n elements has 2^n subsets.Find the number of subsets for set A={2,3,5,7,11}.

    asked by mandy
  124. language arts

    Determine if verb is linking verb. 1. This overflow became the Niagara River. Ans. became is the linking verb

    asked by cee
  125. A question

    May I ask why this site is called jiskha

    asked by anonymous
  126. Pre-calc

    2x^2 - 12x - 3y^2 - 24y +60 = 0

    asked by Laila
  127. language arts

    Determine if verb is a linking verb: 1. The American Falls lies within the US. Ans. "lies" is a linking verb 2. The Horseshoe Falls lies within Canada Ans, "lies" is a linking verb

    asked by cee
  128. language arts

    Find the linking verb and predicate noun or predicate adjective. 1. At night, wide beams of colorful lights look beautiful on the cascades of water. Ans: linking verb is "look" predicate adj is "beautiful"

    asked by cee
  129. stat

    only 65% of climbers reach the summit, a random sample of 16 climbers what is the probability that(A) all 16 reach (B) at least 10 reach (C) no more than 12 reach

    asked by doris
  130. biology

    Give the phenotype and genotype for the F2 generation of a person with Type a heterozygous blood and a type O blood type. Remember to use all possible parents. Using Punnett squares I got 50% type a blood and 50% type o blood is this right??

    asked by maya
  131. Find force

    Find force in the strut: Wall is 20 ft high. Strut begins 4 ft lower, so the "altitude" of strut is 16 ft. "Base" of strut from wall to end of strut = 8 ft. strut is 12 ft on center There is a wind force against wall = 20 lb/ft ^2 Teacher said find wind

    asked by Please Need Help
  132. language arts

    Determine each verb and predicate noun or predicate adjective 1. Some people on the steamers get wet from the falls' foam and mist. Ans Verb is "get" "wet" is predicate adjective

    asked by cee
  133. maths

    If Asquare+Bsquare=16,and 2Ab=8. Find the possible values of A and B

    asked by ogboyeb
  134. Science

    Geothermal power would be classified as a(n) _____________________ resource because its supply will not run out. renewable

    asked by Anonymous
  135. ETH/125

    As homosexuality has become more visible, efforts to suppress it have become more a. repressed. b. fragmented. c. institutionalized. d. individualized.

    asked by Emily
  136. physics

    I once was given a metal whiskey flask for being in my cousin’s wedding. When it got dented, I put in 1 gram of H2O (initially 21°C, just like the air filling the rest of the flask) and heated it up to boil the water. It popped the dent out. Assume the

    asked by mike
  137. Physics

    A cyclist starts from rest and pedals such that the wheels of his bike have a constant angular acceleration. After 20.0 s, the wheels have made 219 rev. What is the angular acceleration of the wheels? What is the angular velocity of the wheels after 20.0

    asked by Ted
  138. Physics

    The flywheel of a steam engine runs with a constant angular speed of 112 rev/ min . When steam is shut off, the friction of the bearings and the air brings the wheel to rest in 2.2 h. What is the magnitude of the constant angular acceleration of the wheel

    asked by Ted
  139. language arts

    Determine each verb and predicate noun or predicate adjective 1.Each year about ten million people visit Niagara Falls. 2.Many industries also operate close by. 3.To them, businesses ruin the area's scenic beauty. 4.Rainbow Bridge spans the gorge below

    asked by cee
  140. chemistry

    How many grams of magnesium are required to produce a total of 4.05g of hydrogen

    asked by veronica
  141. Physics

    A uniform beam of length L = 8.00 m and weight 3.80 102 N is carried by two workers, Sam and Joe, as shown in the figure below. Determine the force that each person exerts on the beam.

    asked by Joe
  142. Maths algebra

    The efficiency of an industrial pump decreases by a fixed percentage each year. The percentage decrease each year is with respect to the efficiency of the pump at the start of each year. Over each four year period, the efficiency decreases by 80%. Let us

    asked by Jasmine
  143. Algebra II

    Graph the following inequalities y-5x+3

    asked by Jamie
  144. Human & Physiology

    Discuss the critical and intricate roles the nervous system plays in homeostasis

    asked by vicki Cooper
  145. Math 2

    Which is bigger -489 or -498? Use greater or less signs. Thanks

    asked by Jenny 2
  146. Algebra

    Consider the function :[1,∞)→Rgivenbytheformulay=x3+2. (a) Show that though the function is increasing at an increasing rate, the change in x required to double the value of the function is not constant. (b) Make a table of values for constant changes

    asked by Jasmine
  147. Physic II

    A conducting loop in the form of a circle placed perpendicular to a magnetic field of 0.40 T. If the area of the loop increases at m^2/s, what is the induced emf in the loop?

    asked by Nurhan
  148. math

    what are the odds i favor of picking an S in Mississippi?

    asked by steve
  149. Science

    An example of a renewable and inexhaustible resource that requires the construction of dams is _________________________ energy. hydroelectric

    asked by Anonymous
  150. Geometry

    In circle O, chord AB is 9 inches from the center. The diameter of the circle exceeds the length of AB by 2 inches. Find the length of AB

    asked by Jonathon
  151. Chemistry

    For the reaction: 2H^+(aq)+Zn(s)----->He2(g)+Zn^2+(aq) a) Write the reduction half-reaction b) Write the oxidation half-reaction c) Identify the oxidizing agent d) Identify the reducing agent

    asked by Anna
  152. FINANCE

    Assume the returns from holding small-company stocks are normally distributed. Also assume the average annual return for holding the small-company stocks for a period of time was 16.5 percent and the standard deviation of those stocks for the period was

    asked by Alec
  153. math

    you dump a box of numbered sticks from 1 to 100, what is the probability that I will get a multiple of 5,

    asked by Hector
  154. english

    i am having troubles on what to right for the conflict and resolution can someone tell me what they are ? Thanks My Stepmother by Thanh Nguyen When my stepmother first came, her eyes were sharp and bright as little knives. Her youth and my childhood ran

    asked by josh anderson
  155. Chemistry-Gases

    A mixture of gases is prepared from 76.9 g of O2 and 16.0 g of H2. After the reaction of O2 and H2 is complete, what is the total pressure of the mixture if its temperature is 178 ºC and its volume is 11.0 L? What are the partial pressures of the gases

    asked by Anonymous
  156. Chemistry 12

    what are the sources of error in preparing ester lab?

    asked by maggi
  157. Chem- Ideal Gas Law

    Carbon dioxide can be made in the lab by the reaction of hydrochloric acid with calcium carbonate. How many milliliters of dry CO2 at 20.0 °C and 745 torr can be prepared from a mixture of 30.6 g of CaCO3 and 279 mL of 0.250 M HCl?

    asked by Anonymous
  158. math

    you dump a box of numbered sticks from 1 to 100, what is the probability that I will get a multiple of 8

    asked by Hector
  159. math

    you dump a box of numbered sticks from 1 to 100, what is the probability that I will get a multiple of 5 and 8

    asked by Hector
  160. AP CHEM

    is there some rule on weak and strong electrolytes and the amount of concentration requiered for each? for example are weak electrolytes supposed to have low concentrations and vice versa for strong electrolytes? if so cna you please explain why as well?

    asked by Sally
  161. west morgan

    find missing dimension cone, r=5in, v=487in3

    asked by shelby
  162. math

    missing dimension, 14yd, v=489yd3

    asked by shelby
  163. Social Studies - Please Check my Answer

    Please check my answer, I am not sure for this one. In 1784 the British forced American merchants to pay duties on a. trade goods imported from the British West Indies. - (This is my answer.) b. trade goods imported through Canadian ports. c. British goods

    asked by Brady
  164. Help ASAP Statistic

    . A new medical test provides a false positive result for Hepatitis 2% of the time. That is, a perfectly healthy subject being tested for Hepatitis will test as being infected 2% of the time. In research, the test is given to 30 healthy (not having

    asked by helen
  165. chemistry

    a has at 635 mmHg and 36 C occupies a volume of 9.80 L. calculate at stp

    asked by yuuuu
  166. Calculus Help Please!!! Check

    A curve passes through the point (0, 2) and has the property that the slope of the curve at every point P is three times the y-coordinate of P. Find an equation of the curve. dy/dp = 3y or ∫ (3/y) dy = ∫ dp or 3 ln(y) = p + c or @ (0,2) ln(2) = 0 + c

    asked by Tenshi
  167. Calculus Help Please!!!

    When a cold drink is taken from a refrigerator, its temperature is 5°C. After 25 minutes in a 20°C room its temperature has increased to 10°C. (Round the answers to two decimal place.) (a) What is the temperature of the drink after 60 minutes? (b) When

    asked by Tenshi
  168. physics

    pressure cookers have been around for more than 30 years, although their use has stongly declined in recent years.how much force must the latches holding the lid onto pressure cooker be able to withstand if the circular lid is 25 cm in diameter and the

    asked by Mohanad
  169. Calculus Help

    A plane flies horizontally at an altitude of 6 km and passes directly over a tracking telescope on the ground. When the angle of elevation is π/3, this angle is decreasing at a rate of π/3 rad/min. How fast is the plane traveling at that time?

    asked by Ulay
  170. Physics

    It shows a ball going along a frictionless track. How do you find the kinetic energy at position B on the track if position B is 15 above the ground and position A is 20 meters above the ground? The weight of the ball is .020 kg

    asked by Eiban
  171. Math

    A model airplane is made on a scale of 1:128. A)what is the scale factor? b) if the airplane model has a wingspan of 30cm,what is the wingspan of the actual plane? use model over original

    asked by Cleopatra
  172. english

    Poem title, author Setting Characters Conflict(s) Resolution Rhyme or rhythm, pattern? on turning 10 You tell me it is too early to be looking back, but that is because you have forgotten the perfect simplicity of being one and the beautiful complexity

    asked by josh
  173. English

    Did I do this correctly?? Select the correctly written sentence in this group. A. Spending way too much money on his old car, Fred's salary just wasn't enough. B. Spending way too much money on his old car, Fred soon found he'd used up his salary. (my

    asked by Ayesha
  174. Physics

    A uniform beam of length L = 8.00 m and weight 3.80 102 N is carried by two workers, Sam and Joe, as shown in the figure below. Determine the force that each person exerts on the beam.

    asked by Joe
  175. Physics

    Consider the following distribution of objects: a 4.00-kg object with its center of gravity at (0, 0) m, a 1.20-kg object at (0, 3.00) m, and a 5.40-kg object at (2.00, 0) m. Where should a fourth object of mass 7.00 kg be placed so that the center of

    asked by Joe
  176. Espanol

    Can I get some corrections? 1. ¿Qué estás haciendo? A. Estás sirviendo la cena. B. Estáis leyendo el texto. C. Me estoy levantando. D. No estás haciendo nada. C 2. ¿Entonces estás descansando? A. Sí, estás muy cansado. B. No, estoy trabajando en

    asked by James
  177. Math

    Write recursive equation: 1/3,3,27,81,243

    asked by Maria
  178. Calculus Help Please!!!

    When blood flows along a blood vessel, the flux F (the volume of blood per unit time that flows past a given point) is proportional to the fourth power of the radius R of the blood vessel: F = kR4 (This is known as Poiseuille's Law.) A partially clogged

    asked by Isik
  179. physics

    A submarine is stranded on the bottom of the ocean with its hatch 25.0 m below the surface. Calculate the force needed to open the hatch from the inside, given it is circular and 0.450 m in diameter. Air pressure inside the submarine is 1.00 atm.

    asked by Mohanad
  180. Reading Skills

    This question is based on the following paragraph. (1) 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

    asked by Emily
  181. Reading Skills

    This question is based on the following paragraph. (1) 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

    asked by Emily
  182. math

    if 2 of the line segments of a polygon are parallel, what is the least number of sides it could be?

    asked by Elina
  183. Derivatives

    G(t)=5200/(1+12e^(-.52t)) Find G'(t) I keeo getting (-32448e^(-.52t))/(1+12e^(-.52t))^2 Is this correct?

    asked by Andy
  184. physics

    A wheel, starting from rest, has a constant angular acceleration of 1.8 rad/s^2. In a 3.1-s interval, it turns through an angle of 142 rad. How long has the wheel been in motion at the start of this 3.1-s interval?

    asked by Tsion
  185. algebra

    sqrt 2a = 2 A: a=6 b. a=4 c. a=2 d. no solution is it c ?

    asked by ciara
  186. Reading Skills

    Below is the last stanza of a poem, "Dover Beach," written in 1876 by Matthew Arnold. Ah, love, let us be true To one another! for the world, which seems To lie before us like a land of dreams, So various, so beautiful, so new, Hath really neither joy, nor

    asked by Emily