Questions Asked on
May 1, 2014

  1. 4th Grade Math

    Maggie Ordered 3 pizzas. Each pizza had 6 slices each. 5/6 of the pizza had mushrooms on it. How many pieces had mushrooms?

    asked by A. Troy
  2. 4th Grade Math

    Mickey Mouse love cheese. He had 24 wedges of cheese. 3/4 of the wedges were cheddar and the other wedges were gouda. How many wedges were cheddar?

    asked by A. Troy
  3. 4th Grade Math

    In Sassy' closet, she has 64 shirts. 2/8 of the shirts were blue. How many of Sassy's shirts are blue? How many are not blue?

    asked by A. Troy
  4. English

    1. The fire happens in the year 1666. 2. The fire happens in 1666. (Which one is commonly used? What is the difference between them?)

    asked by rfvv
  5. Physic

    A vacuum pump is connected to its electric motor by a belt drive (Fig. 9-40, not to scale). The motor rotates at a rate of 1000 rev/min and the diameter of the motor shaft is 2.9 cm. How large (diameter) should the pulley be if it is designed for a speed

    asked by Anonymous
  6. English

    1. A small animal that is covered in fur and has a long thin tail. 2. A small animal that is covered with fur and has a long thin tail. (That is the definition of 'mouse'. Do we have to use 'in' or 'with'?)

    asked by rfvv
  7. Physic

    Two identical tops spin with angular velocities 45π rad/s up and 19π rad/s down, respectively, about vertical axes on a table. The tops bump into one another and separate. After the collision, one of the tops has an angular velocity of 35π rad/s in its

    asked by Anonymous
  8. LEA201

    Conduct an analysis of community policing with regard to the impacts pertaining to law enforcement administration. Thoroughly compare and contrast the aspects of community policing that are significantly influenced by the public interaction and political

    asked by Scott
  9. pre calculus

    You have a $50 coupon from the manufacturer good for the purchase of a cell phone. The store where you are purchasing your cell phone is offering a 20% discount on all cell phones. Let x represent the regular price of the cell phone. (a) Suppose only the

    asked by Danielle
  10. pre cal

    An airplane is flying at a speed of 350 mi/h at an altitude of one mile. The plane passes directly above a radar station at time t  0. (a) Express the distance s (in miles) between the plane and the radar station as a function of the horizontal distance d

    asked by Danielle
  11. science

    How are restriction enzymes important tools in genetic engineering?

    asked by Jonas
  12. English

    Where is the Lord Mayor of London? (Why is 'Lord' added before 'Mayor'here? In the sentence, what is the meaning of 'Lord'?)

    asked by rfvv
  13. pre calculus

    Express statement as an equation. Use the given information to find the constant proportionality z varies inversely as t. If t  3, then z  5.

    asked by Danielle
  14. calculus 1

    find the cubic function,f(x)=ax^3+bx^2+cx^d , has local maximum value of 3, at x=-2 and local minimum value of 0, at x=1.

    asked by sumee
  15. pre calculus

    4+7i divided by 2 (problem is written as a fraction) 4+7i _________ 2

    asked by Danielle
  16. science

    is that electric current occupies space?

    asked by sonia
  17. Probability

    Consider a Poisson process with rate λ. Let N be the number of arrivals in (0,t] and M be the number of arrivals in (0,t+s], where t>0,s≥0. In each part below, your answers will be algebraic expressions in terms of λ,t,s,m and/or n. Enter 'lambda' for

    asked by A
  18. Probability

    A single dot is placed on a very long length of yarn at the textile mill. The yarn is then cut into pieces. The lengths of the different pieces are independent, and the length of each piece is distributed according to the same PDF fX(x). Let R be the

    asked by A
  19. Probability

    We are given the following statistics about the number of children in the families of a small village. There are 100 families: 10 families have no children, 40 families have 1 child each, 30 families have 2 children each, 10 families have 3 each, and 10

    asked by A
  20. Math

    . A playground has a total of 18 swings and slides. There are as many swings as there are slides. How many are there of each?

    asked by Anonymous
  21. accounts

    People from all over the world moving from sole proprietorship to partnerships due to the numerous benefits they get. You are required to tell why the focus is shifting from sole proprietorship to partnership? Explain your answer with the help of at least

    asked by fatima
  22. physics

    A wire of uniform thickness with a resistance of 27 ohm is cut into three equal pieces and are joint in parallel.find the resistance of the parallel combination.

    asked by archit
  23. networks

    i was studying for my network exam and came across the question Compare and contrast packet switching and circuit switching, i compared them no problem but i don't know the actual similarities between them, pls help

    asked by olu
  24. English

    I need to change the word heavy into light only changing one letter at a time

    asked by Evan
  25. English

    Thomas Farriner BAKER To King Charles II ------------------ Is this grammatical? What is the role of the preposition 'to'?

    asked by rfvv
  26. English

    The fire lasted for four days, from 2 September until 5 September. ------------------ How do you read '2 September' and '5 September'? 1. Second September, fifth September 2. September second, September fifth

    asked by rfvv
  27. networks

    Sorry but what causes packet jitter

    asked by help
  28. networks

    what method can be used to reduce packet jitter

    asked by help
  29. 8th grade science

    If you see that a hot-air balloon is rising above the top of a hill, what is the top of the hill called?

    asked by skiler
  30. Alg

    y^2/4 - x^2/25 (less than or equal to 1 y (greater than or equal) 2/3 x +4

    asked by K- ASAP
  31. music

    How many beads do fourth graders need on their recorders?

    asked by Wendy
  32. Statistics

    A 95% confidence level for the difference between u1 and u2 runs from -2 to +6. From this we can infer that a. u1 is probably greater than u2. b. u1 is probably less than u2. c. there may be no difference at all between u1 and u2. d. the difference between

    asked by Kevin
  33. Statistics

    Carol has data on the causes of violent outbursts among kindergarten children. She used a "shot-gun" approach to hypothesis testing by asking the computer to produce p-values for 300 quickly chosen hypothesis tests. She shared her glee with fellow

    asked by Kevin
  34. math

    factorise 1-16(1-y)^2 please help me

    asked by Robert
  35. buisness finance

    Series Average return Standard Deviation Large-company stocks 10.7 % 19.3 % Small-company stocks 16.4 33.0 Long-term corporate bonds 6.2 8.4 Long-term government bonds 6.1 9.4 Intermediate-term government bonds 5.6 5.7 U.S. Treasury bills 3.8 3.1 Inflation

    asked by jnea
  36. malay

    How do you respond to these malay questions? Siapakah kawan baik anda di sekolah? Adakah kamu suka akan matapelajaran matematik?Mengapa? Makanan apakah yang paling anda gemari? Adakah anda suka membaca buku novel?

    asked by sonia
  37. math

    given a Gp below, find the values of m, and the next 2 terms: m, m+3, m^2+3

    asked by Robert
  38. math

    Jose invests 3250 dollars at 6% interest compounded annually. What will be the balance in the account after 3.5 years? A. 3932.50 dollars B. 3985.23 dollars C. 4752 dollars D. 5200 dollars

    asked by brianna
  39. Science

    How much work is done on the trolley by the force,if the force applied is 200N at an angle of 37 degrees to the horizontal and the trolley moves a distance of 10m.

    asked by ANNAH
  40. history 11th grade

    What are some of the perils of the Amazon Rain Forest

    asked by Denise
  41. Help Ms.Sue!!! Social Studies

    1. How does the Israeli-Palestinian conflict most directly affect the daily lives of young people in Jerusalem a. civilian violence b. peace talks c. international negotiations d. political parties ( my answer) 2. which is the best location for farming? a.

    asked by annonomys
  42. Math

    A truck costing $25,000 with a residual value of $5,000 was purchased by Rim Corporation. The truck’s estimated life is 10 years. At the end of Year 2, what is the book value using declining-balance method? Assume a depreciation rate of twice the

    asked by Anonymous
  43. English check answer !

    i think its C. Which of the following show the correct use of a colon? A. my tennis lesson begins exactly at 40:0 p.m. B. Dear: Ms.Hershel C.I have a doctor's appointment at 12:30 p.m.

    asked by matt
  44. consumer math

    You wish to paint a storage shed. Its four walls measure 7 ft. high and 8 ft. wide each. If one gallon of paint covers 160 sq. ft., how many gallons of paint will you need?

    asked by wilton
  45. Physics

    A block of mass M1positioned on a slope (at an angle  ) is connected by means of an inextensible wire, of negligible mass, to another mass, m2, suspended from a frictionless pulley. The coefficients of static and dynamic friction between the slope and

    asked by Jason
  46. science

    A student is trying to identify the different forms of energy described in the following chart:

    asked by nikii
  47. math

    A ladder 20m long rest aganist a vertical wall so that the foot of the ladder is 9m from the wall.

    asked by Okon
  48. Statistics

    You want to know if there's a difference between the proportions of high school students and college students who read newspapers regularly. out of a random sample of 500 high-school students, 287 say they read newspapers regularly, and out of a random

    asked by debbie
  49. world history

    what effect did Punic wars have on small roman farmers? A. grain from conquered lands drove gain prices B. grain from conquered lands drove up grain prices C. new strains of grain from conquered lands helped them thrive D. the lack of grain from conquered

    asked by help plzz
  50. math (2)

    Find the first partial derivatives of the function. f(x,y,z) = xe^(y/z) a. fx = ? b. fy = ? c. fz = ?

    asked by Mia
  51. math (5)

    The monthly profit (in dollars) of Bond and Barker Department Store depends on the level of inventory x (in thousands of dollars) and the floor space y (in thousands of square feet) available for display of the merchandise, as given by the equation below.

    asked by Mia
  52. Statistics

    You want to know if there's a difference between the proportions of high school students and college students who read newspapers regularly. out of a random sample of 500 high-school students, 287 say they read newspapers regularly, and out of a random

    asked by debbie
  53. Math (6)

    The formula below gives the surface area S of a human body (in square meters) in terms of its weight W (in kilograms) and its height H (in centimeters). S = 0.007184(W^0.425)(H^0.725) Compute SW and SH when W = 100 kg and H = 180 cm. SW = ? SH = ?

    asked by Mia
  54. Economics (4)

    Assume that the following data describe the condition of the banking system: Total reserves $200 billion Transactions deposits $800 billion Cash held by public $400 billion Reserve requirement 0.20 By how much could the banks increase their lending

    asked by Mia
  55. Economics (7)

    Assume that a $1,000 bond issued in 2012 pays $100 in interest each year. What is the current yield on the bond if it can be purchased for Instructions: Enter your responses as a percent rounded to one decimal place. (a) $1,200? Yield on $1,200 bond is =

    asked by Mia
  56. Math

    1. Graph and identify the coordinates of a rectangle with a length of at least 5 units and a width of at least 2 units. Each vertex of the rectangle must be in a different quadrant. Two of the points must have rational coordinates that are not integers

    asked by Anny
  57. Physics

    A piston in a bicycle pump is pressured half way into the pump without letting air get out and at unchanged temperature. Inside diameter of the pump is 2,3 cm. a) What is the pressure inside the pump in atm? b) How much force is needed to hold the piston

    asked by Physics: Gas Law?
  58. Questions

    can someone give me some facts about the environment in south america !?!?!?!?!?!

    asked by matt
  59. world history

    Which of the following describes the specific role of the senate in the roman government? A. to enforce laws B. to make laws C.yo interpret law D. to provide counsel to citizens

    asked by I NEED HELP FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  60. algebra

    (y^2 - y + 2)/(y + 2) I put this in calc101 . com and I got an answer with y - 3 in the quotient and got 8 in thr remainder area. My answer key says the answer is y - 3 + 8/y + 2. Can someone explain how the answer key has this answer?

    asked by Anonymous
  61. Algebra

    Divide this rational expression and polynomial (12x^2 + 9x-7)/(3x)

    asked by Sandra
  62. Math

    Could I please get another example of a math problem like the one I did below? 2(x - 14) + 3 = 7x + 5

    asked by Stacy

    2. A point charge of +1.0 µC is moved in the direction of an electric field, and it has a change in electric potential difference energy of 10.0 J. What was the change in electric potential difference? 1 µC = 10-6 C (Points : 1) -1.0 × 10^8 V -1.0 ×

    asked by Hannah
  64. Math

    I need help with the below math problem. I have to write out the steps to show the answer. 2(x - 14) + 3 = 7x + 5

    asked by Laura
  65. Physics quick help please

    6. If 4.0 × 1018 J of work done on a point charge changes its electric potential difference by 25.0 V, then what is the magnitude of the charge? (Points : 1) 1.6 × 101^9 C 4.0 × 101^9 C 1.6 × 101^8 C 4.0 × 101^8 C 7. Two parallel plates have an

    asked by Jacob
  66. Geometry

    Geometry: the width and area of a rectangle Is (4b^3+5b-3)/(2b-1) What is the length of the rectangle? Show work.

    asked by Sandra
  67. math

    find the slop of (-17,18),(4,-12)

    asked by jilena
  68. Math

    Last week we talked about Order of Operation or (PEMDAS) and this week we are solving Linear Equations. Is there any relation to the two practices? Think about it, are the processes similar? Is the process reversed? I think that there is a relation between

    asked by Jamie
  69. Science

    Hello. I need help with science questions. Could you please check these answers for me? Thank you very much! 1. Which of the following traits is acquired A. the number of petals that grow in a plant's flowers B. the wing shape of a wild bird C. the ability

    asked by Chad questintino
  70. English help please

    Which of the following personal completes the sentence correctly? One of my brothers just received ____diploma? A. his B. him C. their I think it is A or B. Can't quite decide. Please help.. Thank you

    asked by Cassie
  71. Buying A Car

    Which one of these statements is true about a "bumper-to-bumper" warranty. A. Normal wear and tear is NOT covered by the warranty. B. All expenses except gasoline and routine oil changes are covered by the warranty. C. Every part and system is covered

    asked by Kristen
  72. math

    The radius of the earth is approximately 3950 miles. The radius of Jupiter is approximately 44,400 miles. Since the radius of Jupiter is more than 11 times that of the earth, which comes closest to the volume of Jupiter ?

    asked by alicia
  73. math

    how much lottery revenue has been allocated to education in nc

    asked by Grace
  74. Algebra

    Word problem: A new photocopier can make 72 copies in 2 min. When the older photocopier is operational, the two photocopiers together can make 72 copies in 1.5 min. How long would it take the older photocopier to make 72 copies working alone? Show work.

    asked by Sandra
  75. Math


    asked by Dashawn
  76. math

    Kyle got in his car and started driving toward his grandmother's house. After driving for 1 hour and 47 minutes, Kyle took a break for 31 minutes to have a snack. Then Kyle drove 43 minutes and finally arrived at his grandmother's house at 4:12 P.M. What

    asked by lulu
  77. HELP MATH ONLY 1 QUESTION!!!!!!!!!!!!!!!!!!!!!!!!!

    you draw five card from a standard deck of 52 cards p(heart)=4/5. what type of probability is illustrated and why?? 1) Theroretical ; the result is based on then number of possible outcomes 2) Theroretical; the result is found by repeating an experiment

    asked by someone
  78. Data math help 7th

    Jeri asked 40 random students at his school to name their favorite ice cream flavor. Of the 40 students he asked, 25 of them preferred chocolate. Based on Barry's results, how many ff the 1200 students in the school most likely prefer chocolate ice cream?

    asked by moby
  79. HELP MATH 1 QUESTION!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    a number cube is rolled 120 times. the number 4 comes up 47 times. what is the experimental probability of rolling a 4 A) 47/120 ; 1/30 B) 47/120 ; 1/6 C) 4/47 ; 1/6 D) 1/6 ; 47/120

    asked by someone
  80. math

    The sphere has surface area 2058 cm2. Its radius, to the nearest tenth, equals

    asked by alicia
  81. Survey Math help

    A movie complex has eight different movie theaters. The manager of the complex wants to conduct a survey to determine which snacks to add to the menu. Which represents the best sample the manager could use for the survey? Would I do specific ages the first

    asked by Kristin
  82. Function Maths 11

    How do you find the related acute anle of tan110 and sin350? I don't understand how to get the answer...

    asked by harley
  83. science

    Which of these statements about saltwater is correct? Saltwater freezes at a lower temperature Saltwater freezes at a higher temperature

    asked by Anonymous
  84. science

    Which of the following illustrates mechanical weathering? A. Carbonic acid weathers marble limestone B.As plants grow, they produce weak acids that slowly dissolve rock C.Oxidation causes weathering in rock

    asked by Anonymous
  85. Math "Ms Sue"

    Carrie found the mean hourly wage of employees at his company using the data in the table. In a report he stated, " The typical salary at the company is about $23.00 per hour. How is this misleading?

    asked by moby
  86. Chemistry

    Write the half cell reactions of the following? 1) Cu/Cu^2+(0.1M)//Ag^+(0.1M)/Ag 2) Zn/Zn^2+ (0.1M)//Cu^2+(0.1M)/Cu 3) Zn/Zn^2+(0.1M)//Ag^+(0.1M)/Ag 4) Zn/Zn(NH3)4^2+*0.5M)//Ag^+(0.1M)/Ag 5) Zn^2+(aq)+4NH3(aq) more Also, around what range of

    asked by Ingrid
  87. College chemistry

    From the reaction below, calculate the free energy of formation for C3H6(g) at 25°C, if ΔGfo(CH4(g)) is -50.790 kJ/mol. 3CH4(g) ↔ C3H6(g) + 3H2(g) ΔGo = 215.302 kJ/mol i've tried doing final-initial, and products minus reactants but i'm not getting

    asked by hershi
  88. college chemistry

    What is the free energy change at 25°C for the reaction below, if ΔGfo(CH4(g) = -50.790 kJ/mol, ΔGfo(C7H14(g)) is 95.887 kJ/mol. C7H14(g) + 7H2(g) ↔ 7CH4(g) similar question but gives some different G's

    asked by hershi
  89. Chemistry

    A sample of nitrogen occupies a volume of 300ml under a pressure of 380 torr at -177C. What would be the volume at STP? I know the answer is 430mL but I don't know which equations to use to formulate the calculation.

    asked by n
  90. Physics

    Find the equivalent resistance in 16 ohm and 8.0 ohm connected in parallel.

    asked by Han
  91. math

    I need the LCM of numbers 2,30,57 please I am not understanding it very well

    asked by svet
  92. Chemistry

    How do I find delta S of 2 Na(s) + 2H2O(l) -> 2NaOH(aq) +H2(g)? I tried to find it using this.... ^Srxn= 2S(NaOH) - S(H2) -2S(Na) - 2S(H2O) = 2(48.1)-130.7 - 2(51.21) - 2(69.95) = 96.2 - 130.7 - 102.42 - 139.9 = -279.82 Where did I go wrong??

    asked by Shana
  93. chemistry

    Why is water essential to living things? A. Water is essential because it is an inorganic compound. B. Water is essential because it contains hydrogen and oxygen atoms. C. Water is essential to many of the chemical reactions that occur in the body. D.

    asked by I NEED HELP FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  94. Trig. Math

    A circle of radius 2 inscribed in a right triangle. Find the simplest expression possible for the triangle's area as a function of its hypotenuse.

    asked by Jemisha
  95. Chemistry

    1) Which ion(s) below would undergo hydrolysis in water? A) Cl- B) K+ C) NH4+ D) NO3- E) Two of the above My guess is C, but I'm not too sure about this one. 2) Calculate the [OH-] present in solution labeled 1.73 M methylamine. CH3NH3 + H2O --> CH3NH3+ +

    asked by Amanda
  96. Physics/Algebra

    Physics: For a 225-watt bulb, the intensity I of light in lumens at a distance of x feet is I=225/x^2. a. What is the intensity of light 5 ft from the bulb? b. Suppose your distance from the bulb doubles. How does the intensity of the light change?

    asked by Sandra
  97. Physics waves

    1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration? a) 0.05 mm b) 5.0 mm c) d) e) 180 mm my answer: I got 10 mm but it is not listed as an option 2. When a tuning fork of unknown frequency

    asked by Liz
  98. Math

    I need the lowest LCM of the number to the 2 number 30 and the number 57

    asked by Svet
  99. Finance

    An investor buys 100 shares of a $40 stock that pays an annual cash dividend of $2 a share (a 5 percent dividend yield) and signs up for the dividend reinvestment plan. A. If neither the dividend nor the price changes, how many shares will the investor

    asked by Stacy
  100. Please do Civics Essay thanks so much

    Please Help with essay question. thanks!! In a federal system of government (also known as a federation), the local and state governments share power with the central government, though the central government has final authority. Eplain how this is

    asked by Roy
  101. Chemistry

    The following reaction is reactant-favored at equilibrium at room temperature. COCl2(g) -> CO(g) + Cl2(g) Will raising or lowering the temperature make it product-favored?

    asked by Shana
  102. math

    There are 5 cars taking students to a museum.Each car can seat 4 students.How many students can go to the museum?

    asked by Jorianys
  103. math

    It took Aaron 4 hours to drive 232 miles. Use the equation below to determine what his average rate of speed was. D = r x t D = distance, r = rate of speed, t = time

    asked by Anonymous
  104. Practical english

    Which of the following sentences contains an indefinite pronoun? A. Her car's battery died because she left the lights on. B. The team congratulated one another on a job well done. C. This is Mary's necklace. D. The flowers, which were just planted, need

    asked by Nene Pepper
  105. Space Exploration

    Give two reasons why observatories are still being built on Earth instead of launching more space telescopes? I I'm assuming one reason is the cost but can't find another reason .

    asked by Cherie
  106. Chemistry

    Just two more to check, thanks! 1) The pH of a 1.25 M solution of unknown monoprotic acid is 5.43. Determine the value of Ka for this acid. HX H+ + X-. (I obtain 1.0 x 10^-11) 2) Calculate the pH of a solution which is 0.73 M benzoic acid. Ka = 6.5 x 10-5,

    asked by Amanda
  107. trig

    A soccer ball is placed 12 ft away from a goal post that measures 8ft high. You kick the ball and it hits the crossbar at the top of the goal. What was the angle of elevation of your kick?

    asked by Anonymous
  108. questions

    Grammar, spelling, and facts can someone tell me about that in south america????

    asked by matt
  109. Calculus Help

    Use calculus to find the area A of the triangle with the given vertices. (0, 0), (3, 1), (1, 8) A = ????

    asked by Anonymous
  110. science

    A 0.63kg{\rm kg} mass vibrates according to the equation x=0.30cos7.00tx = 0.30 \cos 7.00 t, where xx is in meters and tt is in seconds. Determine the amplitude.

    asked by toto
  111. Pysical science

    what is the volume of iron (p=7.9 g/cm3) that has a mass of 0.05kg

    asked by toya
  112. Calculus Help

    Find the values of c such that the area of the region bounded by the parabolas y = 4x^2 − c^2 and y = c^2 − 4x^2 is 256/3. (Enter your answers as a comma-separated list.)

    asked by Kevin
  113. Math 208

    A clothing store offers a 20% discount on all purchases. What is the discount in dollars (before tax) for an item originally costing $16.00 dollars?

    asked by Mayra Jacobs
  114. History8

    Which of the following was NOT a reason the United States needed a stronger national government system? A.States maintained control over their own currency. B.The Articles of Confederation based the number of votes a state had in Congress on the size of

    asked by foreveryoung_9914
  115. History8

    In Westside Community Schools v. Mergens, the Supreme Court ruled in favor of the __________, stating that it was a violation of __________. A.principal . . . church and state B.students . . . their First Amendment rights C.students . . . their patriotic

    asked by foreveryoung_9914
  116. science

    Johnny left a glass of milk on his bedside table for a week, and it spoiled. at the end of the week, the glass contained a yellow liquid with lumpy white chunks, and there was a terrible order. what can be concluded? A. the milk has undergone a physical

    asked by ms.sue help please
  117. math

    Evaluate: 2 to the fourth power + 2 to the third power

    asked by Anonymous
  118. math

    If the area of a circle is twice the area of a triangle whose base is 4 pi and whose altitude is 4, the radius of the circle equals a. square root 32 b. 2 c. 4 d. 8 e. 32 please answer and explain

    asked by thomas
  119. Biology

    Does the adrenal gland have any role in DIRECTLY DETECTING a change in the blood glucose level? Or is only the pancreas involved?

    asked by Erin
  120. calculus help

    find the derivative of the function. integral cos(x) to sin(x) ((ln(8+3v))dv)

    asked by Kevin
  121. Physics

    An ornamental thermometer, commonly known as a Galileo thermometer, contains a number of spheres of hollow colored glass, representing different temperatures, immersed in a column of ethanol. A particular sphere rises from the bottom to the top of the

    asked by Erin
  122. Science

    Which of the following demonstrates that reactants and products are chemically different? A. Zn + 2HCl -> 2HCl + Zn B. Zn + 2HCl -> H2 + ZnCl2 C. H2O + C4H10 -> H2O + C4H10 D. C4H10 + H2O -> C4H10 + H2O

    asked by ms.sue help please
  123. science

    if new information about the behavior of atoms is discovered and verified, then revisions will need to be made to the current _______ ?

    asked by ms.sue help please
  124. math

    Use distributive property to write an expression equivalent to: 10 (5g + 8k)

    asked by Anonymous
  125. History 8

    What was one of the main problems with states controlling their own currency? A.States always had to pay the national government more money than they were able to produce. B.States could make their own money and assign it a specific value. C.Paper money

    asked by foreveryoung_9914
  126. science

    In an effort to reduce global warming, individuals and companies have been buying __________________ to fund restorative projects.

    asked by Anoymous
  127. Chemistry

    A small pebble is heated and placed in a foam cup calorimeter containing water at 25 °C. The water reaches a maximum temperature of 27 °C. If the pebble released 532.1 J of heat to the water, what mass (in g) of water was in the calorimeter? can you show

    asked by Rachel
  128. Calculus Help Please Urgent!!!

    Breathing is cyclic and a full respiratory cycle from the beginning of inhalation to the end of exhalation takes about 3 s. The maximum rate of air flow into the lungs is about 0.3 L/s. This explains, in part, why the function f(t) = (3/10)sin(2πt/3) has

    asked by TANYA
  129. Chemistry

    100.0 ml of 0.25 M HCL are required to titrate 65 ml of NaOH. What is the M of the NaOH?

    asked by Anonymous
  130. math

    Amy earned $93 at work yesterday. She gets paid $8 per hour, plus she received a $45 bonus. Write an equation that can be used to determine how many hours Amy worked.

    asked by Anonymous
  131. Constituion

    what article of the Constitution clarify the federal system of government?

    asked by foreveryoung_9914
  132. Math

    •Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero.

    asked by heaven
  133. English Literature

    We have just finished reading Poe's "The Fall of the House of Usher" and I need to explain, in a paragraph what "Roderick is all mind in a weak body" means. I think it's somehere along the lines of his spirit being alive but his exterior being dead. I'm

    asked by Bob
  134. Constituion

    Does Article I gives the legislative branch power to make laws?

    asked by foreveryoung_9914
  135. math

    You toss a coin 15 times. P(heads) 2/5 = a. experimental; the result is found by repeating an experiment. b. experimental; the result is based on the number of possible outcomes. c. theoretical; the result is found by repeating an experiment. d.

    asked by ms.sue help please
  136. chemistry

    Kc for the decomposition of ammonium hydrogen sulfide is 1.8 x 10-4 at 15oC. a. When 5.00 grams of the pure salt decomposes in a sealed 3.0 L flask at 15oC, what are the equilibrium concentrations of NH3 and H2S? b. What are the equilibrium concentrations

    asked by mattie
  137. calculus help

    find the derivative of the function integral from cosx to sinx (ln(8+3v)dv)

    asked by Chris
  138. chemistry

    A Can of CO2 contains 5.75gmolecules of CO2. Calculate (a)number of moles of CO2 (b) mass of CO2.

    asked by maris
  139. math

    write a diameter if 8-pound test line in words and as a fracion

    asked by kim
  140. Chemistry

    Aniline, C6H5NH2, is a weak base. If the hydroxide ion concentration of a 0.223 M solution is 9.7 10-6 M, what is the ionization constant for the base?

    asked by John
  141. aed

    • From the Select Chapter menu, click 11. o From the menu on the left, select Video. o Click on the “Classroom Management” video clip. • Choose either the constructivist or behaviorist theory of education. • Write a 700- to 1,050-word paper in

    asked by maca
  142. math

    she made 3 frames for pictures that each have an area of 24 square inches and each have a perimeter of 20 inches. How many tiles did she use for all 3 frames?

    asked by Januita
  143. calculus help

    use the midpoint rule with the given value of n to approximate the integral. round the answer to four decimal places. integral 0 to pi/2 2cos^3(x)dx, n=4 M4=????

    asked by Anonymous
  144. Calculus Help and Check

    find the derivative of the function integral from cosx to sinx (ln(8+3v)dv) y'(x)= (sin(8+3((sin(x)))+x)+sin(8+3sin(x)-x))/2 Is this the right answer?????

    asked by Chris
  145. english

    In your opinion what point could making an observation halt or obstruct the writing process

    asked by gwendolyn
  146. statistics

    At the beginning of the semester, students who registered for a statistics course were randomly assigned to two sections, each taught by a different instructor. At the end of the semester, we would like to test whether there are differences in performance

    asked by April
  147. history

    Did sharecropping restrict the voting rights of African Americans after 1867?

    asked by steve
  148. Spanish 2

    Fill in the blank with the correct form of the present perfect. You do not need capital letters or accents for this. 1.) Los chicos_____hecho la tarea. 2.) Maria ____ ____ (limpiar) 3.) Usted ha ____(ver) la pelicula? 4.) Yo he ____(comer) los tacos. 5.)

    asked by Lanie
  149. social studies

    so i have to do a poster on the human characteristics of south america and one of the catagories is goverment systems

    asked by katy
  150. history

    i need to build a visual for civil war prisoner of war

    asked by nick
  151. Chemistry

    I'm not sure how to answer this question and how to set it up. To what volume should you dilute 90mL of a 10.5M H2SO4 solution to obtain a 1.65M H2SO4 solution?

    asked by J.J
  152. Math

    Your school is planning to put an aquarium with 30 fish in it in the main lobby. To accommodate this number of fish, the aquarium should be between 50 and 60 cubic feet of water. To help reduce costs, the surface area of the aquarium should be no more than

    asked by Kristen
  153. Chemistry

    A 5.0−L sample of a 5.4M NaCl solution is diluted to 70L . What is the molarity of the diluted solution? How would you set this up and answer it?

    asked by AF
  154. Chemistry

    What volume of each solution contains 0.220mol of NaI? a.) 0.142M NaI b.) 0.902M NaI c.) 1.61M NaI

    asked by M
  155. Math

    rewrite the following fractions as 1: 8/8, 8/9, 2/2, 4/5, 6/9

    asked by Uel
  156. math

    A line segment is drawn from (-8,-6)to (0,0).What are the coordinates of the midpoint? a. -16,-12 b. -8,0 c. 0,-3 d. -4,-3 e. -3,-4 please answer and explain

    asked by thomas
  157. math

    If A=2/3B,B=2/3C,and C=2/3D,what part of D is B? a. 8/27 b. 4/9 c. 2/3 d. 75 e. 4/3 please answer and explain

    asked by thomas
  158. history

    How did the wartime economies of the North and South compare?

    asked by steve
  159. chemistry

    what will be the pressure of 0.010m of oxygen gas in a 4.5L flask at a temperature of 10,000C?

    asked by Anonymous
  160. Chemistry

    Calculate the grams of NaNO3 required to produce 5L of oxygen at STP if the percent yield of the reaction is 78.4%?

    asked by Harry
  161. math

    A candy dealer makes up a mixture of 3 parts of candy costing him 60 cents a pound with 2 parts of candy costing him 70 cents a pound, and 2 parts of candy costing him 50 cents a pound.At what price per pound should he sell this mixture to make a profit of

    asked by thomas
  162. trigonometry

    A man 1.8 metre tall observes the angle of elevation of a tree to be 20 degrees, if he is standing 16 metres from the tree. Find the height of the tree.

    asked by curt james
  163. Math (6)

    The formula below gives the surface area S of a human body (in square meters) in terms of its weight W (in kilograms) and its height H (in centimeters). S = 0.007184(W^0.425)(H^0.725) Compute SW and SH when W = 100 kg and H = 180 cm. SW = ? SH = ? NOTE: I

    asked by Mia
  164. math (5)

    The monthly profit (in dollars) of Bond and Barker Department Store depends on the level of inventory x (in thousands of dollars) and the floor space y (in thousands of square feet) available for display of the merchandise, as given by the equation below.

    asked by Mia
  165. economics (4)

    Assume that the following data describe the condition of the banking system: Total reserves $200 billion Transactions deposits $800 billion Cash held by public $400 billion Reserve requirement 0.20 By how much could the banks increase their lending

    asked by Mia
  166. economics (7)

    Assume that a $1,000 bond issued in 2012 pays $100 in interest each year. What is the current yield on the bond if it can be purchased for Instructions: Enter your responses as a percent rounded to one decimal place. (a) $1,200? Yield on $1,200 bond is =

    asked by Mia
  167. math

    in lucys bead collection 75% of the beads where red 12% are blue the rest are green she has 104 green beads how many are blue beads

    asked by mackenzie
  168. math (check answer plz)

    Types........ Adults Children Total Chocolate Chip 5 10 Peanut Butter 8 6 Oatmeal 7 4 -------------------------------------------------------------------------------------------------------------------------------- What percentage of the children chose

    asked by me
  169. physics

    A moving object has a kinetic energy of 147 J and a momentum of 22.3 kg·m/s. a) Find the speed of the object. Answer in units of m/s

    asked by rachel
  170. science Notes?

    What does the term adaptation mean? How does adaptation explain the patterns of distribution of plant and animal species in the world? how matter moves through the biosphere. State how energy moves through the biosphere.

    asked by Anoymous
  171. chemistry

    For which salt, K2SO4, Li2SO4, KClO4, or NH4Cl, will increasing the temperature of the water have the greatest change in solubility per 100 g solvent?

    asked by Anonymous
  172. math

    You have a nickel, a dime, a quarter and a half dollar. A clerk shows you several items, each a different price, any one of which you could buy with your coins without receiving change. What is the largest number of articles he could have shown you? a. 8

    asked by thomas
  173. Fifth grade math

    Ellison's Jewlers displays charms for bracelets in trays that hold 36 charms each the store has 637 charms to put on display in 5 display cases. How many charms are left after the trays are filled ?

    asked by Ariyanna Hines
  174. Calculus

    Consider the differential equation dy/dx=xy-y. Find d^2y/dx^2 in terms of x and y. Describe the region in the xy plane in which all solutions curves to the differential equation are concave down.

    asked by Michelle
  175. history

    Who as the last American Indian to surrender to the US government?

    asked by steve
  176. science

    Discuss the relationship between the size and weight of an object and the amount of friction that is present. Sports such as soccer involving running, stopping, jumping, and kicking. Discuss how friction helps players. Please help, I am stuck and confused.

    asked by rian
  177. phys

    A disk with a rotational inertia of 2.0 kg.m^2 and a radius of 0.40 m rotates on a frictionless fixed axis perpendicular to the disk faces and through its center. A force of 5.0 N is applied tangentially to the rim. The angular acceleration of the disk is:

    asked by jay
  178. physics

    If the end of the ruler of length 1 m is raised by 25 cm, the wooden bar is sliding down at the constant speed. What is the acceleration of the bar if the height of the end is increased twice

    asked by aslam
  179. Chemistry- is this correct?

    50.0 ml of .30 KOH are required to titrate 60.0 ml of H2SO4. What is the M of the H2SO4? Is .13 correct?

    asked by Anonymous
  180. science

    Discuss the relationship between the size and weight of an object and the amount of friction that is present. Sports such as soccer involving running, stopping, jumping, and kicking. Discuss how friction helps players. Please help, I am stuck and confused.

    asked by Anonymous
  181. Math

    Solve by elimination: 5x+7y=77 , 5x+3y=53 can you please help me out step by step so I can understand it on my own, thanks.

    asked by Alex
  182. questions

    Hi i have a question about air pollution that comes out of cars?!?! where does it come from? is it the smoke coming out the back of the car?!?!? where !?!

    asked by matt
  183. Math

    Can you please help me with this one!! Solve by elimination, 3x+6y=6, 2x-3y=9

    asked by Alex