Questions Asked on
April 6, 2015

  1. Physics

    On March 15, 2015 we observed the explosion of a star in our galaxy that is 250ly away. On what date did this explosion actually happen?

    asked by Linda
  2. chemistry

    If 5.40 kcal of heat is added to 1.00 kg of ice at 0⁰C, how much liquid water at 0⁰C is produced? Show all calculations leading to an answer.

    asked by allexelle
  3. chemistry

    The Kw of water varies with temperature. Calculate the pH of water at 46⁰C with a Kw = 1.219 x 10-14. Show all calculations leading to an answer.

    asked by allexelle
  4. math

    joel runs 7 miles in 60 minutes. at the same rate ,how many miles would he run in 24 minutes

    asked by Rachel
  5. ET1210 DC/AC FUNDAMENTALS

    if the resistance is halved and the voltage is not changed, what will happen to the current in resistive circuit?

    asked by Anonymous
  6. ET 1210 FUNDAMENTALS

    IF THE VOLTAGE IS DOUBLED AND THE RESISTOR IS NOT CHANGED, WHAT WILL HAPPEN TO THE CURRENT IN A RESISTIVE CIRCUIT

    asked by Anonymous
  7. calculus

    A ball is thrown from an initial height of 130 feet with an initial upward velocity of 35ft/s . The ball's height H (in feet) after T seconds is given by the following h=130-6t-16t^2

    asked by juan
  8. Precal

    Solve for x 9^x - 4 * 3^x +3=0 I know the 9^x = (3^x)^2

    asked by Anonymous
  9. physics

    Why the blood pressre in human greater at the feet than in the brain?

    asked by edward
  10. math

    1. The cost C of joining FitFast Gym includes an initial membership fee of $127, plus a monthly fee m of $28. The cost of going to the gym is a function of the number of months of membership. Find the rule for the function. 2. Find the cost of using the

    asked by please help ASAP
  11. calculus

    A ball is thrown vertically upward with an initial velocity of 128 feet per second, the ball’s height after t second is s(t) = 128t – 16t². Find the instantaneous velocity at 4 seconds.

    asked by syu
  12. algebra

    Given that , show that =

    asked by syu
  13. physics

    A vehicle expends an energy of 25000J while moving at a constant speed of 5 ms.what is the mass of vehicle?

    asked by nitya
  14. Differential Equation 3

    (x^2+1) y^''+2xy^'=0 Solve for two power series solution about ordinary point x=0

    asked by ijat
  15. Differential Equation 4

    A differential equation governing the velocity v of a falling mass m to air resistance proportional to the square of the instantaneous velocity is m dv/dt=mg-kv^2 where k>0 is a constant of proportionality. The positive direction is downward. (a)Solve the

    asked by ijat
  16. Differential Equation 5

    Construct the Fourier series of the following periodic function. f(x)= cosx, -π≤x

    asked by ijat
  17. Differential Equation 6

    Solve. x^3 y^'''+5x^2 y^''+7xy^'+8y = t+e^(-t)

    asked by ijat
  18. maths

    Mary has 3 toys.Bob gives her another 3 toys.How much does Mary have now?

    asked by ubhj
  19. math

    Susie bought 5 kg of flour and 4 kg of sugar for $14.80.If 3/4kg of flour cost as much as 3/5kg of sugar,find the cost of 1kg of sugar.

    asked by harry
  20. english

    According to scholars, what is one way the advent of talking pictures changed the behavior of movie audiences

    asked by micelle
  21. psychology

    analyse the tenants of psycholanalsis

    asked by alice
  22. English

    Yesterday my American friend asked me how long I had been learning English. I said I had been learning English since middle school. He was surprised. And he said, ¡°Why do you learn English?¡± When we travel to foreign countries, have a conversation

    asked by rfvv
  23. American History

    Thomas Jefferson justified the Louisiana Purchase on the grounds?

    asked by POL201
  24. physics

    an Atwood machine with two masses 6kg and 10kg. What is the tension in the chord connecting the masses. Assume the pulley is frictionless and the rope massless. Take g=9.8m/s2

    asked by wolf
  25. American History

    Under the Budget Reform and Impoundment Act, the President?

    asked by POL201
  26. American History

    Presidents often resort to the use of White House “czars” because

    asked by POL201
  27. Differential Equation

    Solve. x^3 y^'''+5x^2 y^''+7xy^'+8y = t+e^(-t) **guys pls give some solution. i need help. the answer couldn't teach me anything but the solution is.Tq

    asked by ijat
  28. Physics Fluids

    A column of oil of height 70.0 cm supports a column of an unknown liquid. Assume that both liquids are at rest and that the density of the oil is 840 kg/m^3. Determine the density of the unknown liquid.

    asked by Drew
  29. Physics Fluids

    When a block of volume 1.00 × 10–3 m3 is hung from a spring scale, the scale reads 10.0 N. When the same block is then placed in an unknown liquid, it floats with 2/3 of its volume submerged. The density of water is 1.00 × 103 kg/m^3. Determine the

    asked by Drew
  30. Physics Fluids

    Water is flowing through a rectangular channel that is 12 m wide with a speed of 0.75 m/s. The water then flows into four identical rectangular channels that have a width of 3.0 m. The depth of the water does not change as it flows into the four channels.

    asked by Drew
  31. American History

    The reason that the President is called the Commander-in-Chief in the Constitution is because the Framers wanted ***to provide the President with authority over the secretary of defense. Question 2. Question : Thomas Jefferson justified the Louisiana

    asked by POL201
  32. Physics

    Could someone show me how to work this? It's for a study guide I'm practicing, and I just can't seem to get the correct answer. The position of a 0.63 kg object attached to a spring is described by [x = (1.09 m) cos(3.11πt)] a) Find the object’s

    asked by James
  33. Telecommunication 2.

    What is the frequency of a citizen's band(CB)radio which has a wavelength of 11.5meters?

    asked by Micheal Fabia
  34. math

    andy and april shared pie.Andy ate 2/5 of the pie april ate 1/3 how much did they eat all together

    asked by travis
  35. physics

    A car speeds up uniformly from rest so that it has a velocity of 30 ms-1 after 20 second. How far does the car travel in first 10 second?

    asked by Michelle
  36. physics

    A car speeds up uniformly from rest so that it has velocity of 30 ms-1 after 20 seconds. Question/ How far does the car travel in first 10 seconds?

    asked by Michelle
  37. Business

    5. A long-time expert in your field who will guide and advise you in your start-up phase is called a/an A. mentor. B. investment counselor. C. contact. D. entrepreneur. My answer is b If not b then d But I'm bit sure I need help

    asked by Karen
  38. physics

    A car speeds up uniformly from rest so that it has a velocity of 30ms -1 after 20 second.How far does the car travel in first 10 seconds?

    asked by Michelle
  39. Physics

    A string is stretched by 2cm and its potential energy is u .if it is strechted by 10 cm,the potential energy is: A.u\5 B.5u C.10u D.25u

    asked by Damandip
  40. Physics

    A string is stretched by 2cm and its potential energy is u .if it is strechted by 10 cm,the potential energy is: A.u\5 B.5u C.10u D.25u

    asked by Damandip
  41. physics

    a soccer player kicks the ball of mass 0.4kg.the ball moves off at a speed of 4m/s. calculate the maximum height the ball could reach

    asked by marta
  42. Chemistry

    0.688g of antacid was treated with 50.00ml of 0.200M HCl. The excess acid required 4.21 mL of 1.200 M NaOH for back-titration. What is the neutralizing power of this antacid expressed as mmol of HCl per gram of antacid? I think the answer should be:

    asked by Michelle
  43. civic education

    list four limitations of human rights

    asked by kemi
  44. Math

    1)How many real number solutions does the equation have? -8x^2-8x-2=0 A) One Solution B) Two Solutions C) No solutions D) Infinitely many solutions If someone could help me with this that would be great since I am confused. Thank you!

    asked by Tia
  45. history

    discuss inter-group relations

    asked by kemi
  46. physics

    A girl of mass 50kg runs up a flight of stairs.After 10 minutes she is 250 metres above the ground. Determine her average power output. Ignore the effects of friction.

    asked by Bafana
  47. physics

    calculate the force of gravity between a newborn baby of mass 2.9kg and the obstertrician of mass 100kg, who is 0.48m from the baby.

    asked by elon coleman
  48. Chemistry

    Instead of using ratios for back titrations we can also use molarities if our solutions are standardized. A 0.188g sample of antacid containing an unknown amount of triprotic base Al(OH)3 was reacted with 25.0mL of 0.101M HCl. The resulting solution was

    asked by Caroline
  49. English

    Phantom of the opera. how does the theme of horror relate with Erik's (Phantom) face deformity?

    asked by Rose
  50. Physics

    1. A point on the edge of a large wheel of radius 0.45 meters moves through an angle of 170o at a constant angular velocity of 0.25 radians/sec. . (a) Find the length (in meters) of the arc described by the point. (b) Find the linear velocity (in m/sec) of

    asked by ryan
  51. science

    100mL of oxalic acid (H2C2O4) requires 35mL of 0.04M KMnO4 to titrate it to the endpoint. calculate the molarity of the oxalic acid.

    asked by aisha
  52. physics

    2. On the spin cycle on a washing machine, the drum holding the clothes goes from zero to 180 rpm (revolutions per minute) in 8.0 seconds. (Hint: Be sure to change rpm to radians/sec.) (a) What is the angular acceleration (in radians/sec2) during this time

    asked by jeff
  53. Physics

    Two disks are originally separated. The mass of Disk #1 is 1.5 kg, and the mass of disk #2 is 2.6 kg. Disk #1 has a radius of 10 cm, and it is rotating at an angular velocity of 15.0 rad/sec. Disk #2 has a radius of 15 cm, and it rotates in the opposite

    asked by jeff
  54. math

    There are 9 red gum balls, 5 green gum balls, 8 yellow gum balls, and 8 blue gum balls in a machine. Find P(green, then yellow)

    asked by Eye Candy
  55. US History

    Which was one objection of the ayatollahs to the rule of the shah of Iran? reduced influence of religion on the government women did not have enough opportunities insufficient acceptance of all people redistribution of wealth across the population

    asked by O
  56. masterin quantum

    Consider the left shift operator on the space of infinite sequences of complex numbers: L(z1,z2,…)=(z2,z3,…). Is L injective? Yes Yes - incorrect No Is L surjective? Yes Yes - correct No Find the eigenvalues and eigenvectors of L. Then complete the

    asked by JuanPro
  57. math

    On Abby Ellen's graduation from law school, Abby's uncle, Bull Brady, promised her a gift of $24,000 or $2,400 every quarter for the next 4 years after graduating from law school. If the money could be invested at 6% compounded quarterly, which offer

    asked by Maggie Hopkins
  58. mastering quantum mechanics

    PART B (10 points possible) Consider the operator S on an n-dimensional complex vector space so that S(z1,z2,…,zn)=(0,z1,z2,…zn−1). Assume the inner product is the standard one: ⟨(x1,…,xn),(y1,…,yn)⟩=x∗1y1+…+x∗nyn. Calculate

    asked by JuanPro
  59. Algebra

    Jan received $2,200 from her aunt as a birthday gift. She decided to put the money in an account to save for college. The account has a fixed interest rate of 7.7%, compounded annually. How much money will be in the account after five years?

    asked by Sydney
  60. mastering quantum mechanics

    Problem 3: Rotating a spin state (3 parts , 15 point) PART A (6 points possible) Consider the |+⟩ state of a spin one-half particle (as usual |±⟩=|z;±⟩) and apply to it the rotation operator R that rotates states by an angle θ around the y axis.

    asked by JuanPro
  61. mastering quantum mechanics

    Problem 4: Variational principle and bounds (3 parts, 30 points) PART A (15 points possible) Consider a particle of mass m in a box of size L so the wave function vanishes at x=±L/2. Find an upper bound E∗ on the ground state energy Egs using a simple

    asked by JuanPro
  62. physics

    An observer can describe the motion of an object as "translational" if

    asked by wolf
  63. Physics

    The university skydiving club has asked you to plan a stunt for an air show. In this stunt, two skydivers will step out of opposite sides of a stationary hot air balloon 2,500m above the ground. the second skydiver will leave the ballon 20 seconds after

    asked by Jaime
  64. POL201:American National Government

    Theodore Lowi suggested the remedy for cumbersome bureaucracy was (Points : 1) A)returning to juridical democracy. B) delegating even more authority. C) reducing the size of government. D) throwing money at the problem.

    asked by Loretta
  65. English

    How does Erik (the phantom) from The Phantom of the Opera show romance?

    asked by Rose
  66. maths

    i am thinking of a number i multiply it by 8 and subtract 163 i would get the same answer if i multiply by 3 and subtract 13

    asked by kaitlin
  67. chemistry

    how would you prove that sodium hydroxide is a base without wing litmus paper?

    asked by diana
  68. Chemistry

    Calculate the solubility of Ag2CrO4 in a) 0.05M KClO4 b) 0.005M AgNO3 a) I have figured out: Ag2CrO4=2Ag- + CrO42- Ksp=1.12*10^-12. Ksp=[2Ag]^2*[CrO4] Ksp=(2x)^2(x) = 1.12*10^-12=4x^3= x=2.65*10^-5 (?) b)Ag2CrO4=2Ag- + CrO42- Ksp=1.12*10^-12.

    asked by Carrie
  69. World History

    I need help. In a brief essay, explain three ways in which the Roman Catholic Church responded to the spread of Protestantism in the sixteenth century. Describe each part of the church’s response using specific facts.

    asked by Sara
  70. English

    How does Erik (the phantom) from The Phantom of the Opera show romance? i already mentioned about his relationship with Christine, but i need two more points.

    asked by Gina
  71. Chemistry

    Consider the reaction between acetylene, C2H2, and oxygen in a welding torch: If 5.4 moles of acetylene react with sufficient oxygen, how many grams of CO2 will be formed?

    asked by Angie
  72. Marketing

    The text explains that the two central concerns of marketing are?

    asked by Anonymous
  73. science

    1.a ball with a mass 2kg rests on an incline with an angle of 10 degrees. The ball is released to roll down the incline plane neglecting all friction: Determine the following: A.the loss in potential energy after it has rolled 12m. B.the velocity after it

    asked by Buhle
  74. geometry

    Given m

    asked by robin
  75. French (if correct translation/grammar)

    Presque toutes les grandes histoires d'horreur sont également de grands romances, et histoire de Leroux d'un compositeur déformé et masqué, hantant l'opéra de Paris de labyrinthe comme un fantôme, racheté seulement par son amour pour un chanteur

    asked by Gina
  76. Biology

    Assume you had a round seed garden pea plant and you wanted to find out whether the round seed plant was homozygous or heterozygous. What would you do? (Round is dominant to wrinkled seed)

    asked by Missy
  77. science please help asap

    1.a train with a mass of 120mg accelerates uniformly on a horizontal track. The resistance to movement is 5N per kN of the mass of the train. The force in the draw bar of the locomotive is 80kN. Calculate A.The force required for the constant speed. B. The

    asked by Bettina
  78. physics

    When using a double slit with light of wavelength 504 nm, it is observed that the 4-th order maximum of the interference pattern occurs at the positions of the first minimum in the diffraction pattern. If the width of the slits is 0.24 mm, what is in mm

    asked by Emily
  79. geometry.

    use midpoint formula to calculate the midpoint of AB. Name it point M and plot it in the graph. Calculate lengths AB, AM, MB. thanks for help.

    asked by robin
  80. Biology HELP

    How do you know whether something is homozygous dominant or heterozygous dominant?

    asked by Missy
  81. French

    Is this sentence correct? J'adore quand il fait chaud.

    asked by Anonymous
  82. physics

    1. An electric pump, used to obtain water from 20 metres below the ground, is marked 5000W. a) If the pump operates as rated, how much energy is used to pump water every second? b) Describe the energy conversions that take place when the pump is used. c)

    asked by Jeffrey
  83. Calculus 2 (Series)

    Can anyone help me start this problem from beginning to end, along with explanations on how to go about the problem for a better understanding how to do this series problem? 1) Find the values of p for which the series is convergent. Summation notation

    asked by Sena
  84. geometry

    sorry about nos. A(-3, 2) B (5, -4).calculate midpoint. Calculate length of AB, AM, and MB. Thanks again

    asked by robin
  85. geometry

    use diagram given: m

    asked by eric
  86. Life orientation

    to what extent can itrapersonal conflict affect on choice of careet

    asked by khutso
  87. algebra

    Find a special factoring pattern for a difference of two sextics: (a^6-b^6).

    asked by Maggie
  88. physics

    1. An electric pump, used to obtain water from 20 metres below the ground, is marked 5000W. a) If the pump operates as rated, how much energy is used to pump water every second? b) Describe the energy conversions that take place when the pump is used. c)

    asked by Bafana
  89. Math

    An equation can be used to find the height of a child. Equation is h=2c. The child is 36 inches at 18 months. (12in=1ft) How tall will the child be when he is 5 years old?

    asked by Jade
  90. employment law

    If the employee taking FMLA leave has unused paid vacation or sick leave, the employer may: A. require the employee to use sick leave toward the FMLA leave, but not vacation. B. not allow any time to be taken under the FMLA. C. require the employee to use

    asked by breeamberr
  91. Math: Geometry

    Joe is making a toy from a rectangular block of wood. He drills two holes, each with diameter 1.4 cm, through the block. The block of wood has length 15 cm, width 8 cm, and height 5 cm. a)What is the volume of the block before the holes are drilled? b)What

    asked by Thomas Simmons
  92. employment law

    The bona fide occupational qualification: A. operates as a defense to claims for discrimination based on religion, national origin, gender, and age. B. has been found not to apply to sex discrimination cases. C. operates as a defense only to claims for

    asked by breeamberr
  93. math

    An equation can be used to find the height of a child. Equation is h=2c. The child is 36 inches at 18 months. (12in=1ft) How tall will the child be when he is 5 years of age?

    asked by Jade
  94. geometry

    if m

    asked by eric
  95. Math Help Please!

    A bank offers two interest account plans. Plan A gives you 6% interest compounded annually. Plan B gives you 13% annual simple interest. You plan to invest 2,000 for the next 4 years. Which account earns you the most interest (in dollars) after 4 years?

    asked by Kennabug
  96. Physics

    You hold a hose 45 degrees to the horizontal and at a height of 1 m from the floor. The water reaches a maximum distance of 10 m from where you are standing. Now you place your thumb over the end of the hose to occlude the opening by 80%, which in turn

    asked by carolyn
  97. Physics

    Assume the muscle is 37C and is separated from the outside air by layers of fat and skin. The layer of fat, at a particular location on the skin, is 2 mm thick and has a conductivity of 0.53 W/mK. Finally, the outermost epidermal layer is 0.1 mm thick with

    asked by carolyn
  98. English

    I need to find 3 examples of figurative devices, and 2 examples of sound devices in Act II of Shakespeare's Othello play and write their effects(meaning + why Shakespeare decided to use these devices). Anyone have any suggestions for good lines within Act

    asked by Kamri
  99. math

    write the equation of the line: a line that goes through the point (-1,5) and has a slope of 2/3

    asked by matt
  100. Math Check

    A bank offers two interest account plans. Plan A gives you 6% interest compounded annually. Plan B gives you 13% annual simple interest. You plan to invest 2,000 for the next 4 years. Which account earns you the most interest (in dollars) after 4 years?

    asked by Kennabug
  101. algebra

    A cubic polynomial function f(x) has leading coefficient -2 and intercepts the y-axis at 2. If f(1)=1, and f(-2)=-2, find f(-1) and write the complete function.

    asked by April
  102. Math

    Carol has a collection of 100 stamps. The graph below shows the percentage of stamps she has from each country. France=24% Italy=25% England=22% Norway=29% How many of Carol's sta,ps are from Noraw than from France? A. 5 stamps B. 24 stamps C. 29 stamps D.

    asked by Anonymous
  103. health

    1.why is it necessary to make a pressure bandage for a bleeding injury a)to cover the wound so id does not get contaminated b)to create a barrier so the blood does not infect the rescuer c)to help stop the bleeding by applying continuous pressure****

    asked by #HOMEWORK
  104. Science

    I really need help with my science which is based on Galileo Galilei. I need information about his early life,education, his fun facts, his contributions,and how his contributions affect us. i got some information but i need help finding proper info.

    asked by Albert Einstein
  105. Math

    Find the next three terms sequence. -2,-12,-72,-432,.... A. -1,728, -6,912, -27,648 B. -1,728, -10,368, -62,208*** C. -2,592, -10,368, -41,472 D. -2,592, -15,522, -93,312 ASAP is good, but if not no prob!

    asked by Anonymous
  106. math

    How do I write complex and real roots? For example, if the real roots are 1, -1 and the complex roots are -i, i how do I write those down? It'd be x:1, x:-1, x:-i, x:i, correct? Or am I wrong?

    asked by Ortega
  107. English

    What aspects of Langston Hughes's poetry did people not like in general?

    asked by Anonymous
  108. Math

    A survey of 594 studnets about the sports program at a school finds the following results: 495 students like the program 99 students think the program is inadequate. If a circle graph were made from the data, what would the measure of the central angle be

    asked by Anonymous
  109. physics

    an 83.2 kg girl is standing on a frictionless ice surface through a 2.00 kg book at 12.6 m/s at what velocity does the girl move across the ice?

    asked by Anonymous
  110. Math

    Lisa takes a loan of $10,500 at a 9% simple interest rate for 7 years. a. How much interest will she pay after 3 years? b. how much interest will she pay in total for the loan? a. $2,835.00; $6,615.00 b. $8,280.00; $9,720.00 c. $13,598.00; $19,194.00*** d.

    asked by Anonymous
  111. Math

    Chocolate chip: Adults=5 Children=10 Peanut butter: Adults=8 Children=6 Oatmeal: Adults=7 Children=4 What percentage of the children chose penut butter? A. 70% B. 25% C. 30% D. 45% Is the answer B? Thank you

    asked by Anonymous
  112. Science

    what are some challenges to biodiversity

    asked by Help
  113. Math

    James is training for a marathon. Every week, he increases the distance he runs by 15%. If James is running 8.5 miles this week, how far will he be running 2 weeks from now? I did 30/100=x/8.5 . I thought that if I did 30 (for 2 weeks) instead of 15 (1

    asked by Deandrea
  114. physics

    an archer shoots an arrow into a piece of wood. the arrow is traveling at 120km/h when it strikes the wood. the arrow penetrates 3.8cm into the wood before stopping. what is its average acceleration (in m/s squared) into the wood?

    asked by tommy
  115. math

    How do I find three ordered pair solutions for x-y=4

    asked by Rashad
  116. business statistics

    pkg1 pkg2 215 148 89 70 367 292 find the relative frequency of occurrence approach to determine the probability that a tube of toothpaste sold had packaging style 1

    asked by charissa
  117. Math

    A back-to-back stem-and-leaf plot showing the points scored be each player on two different basketball teams is shown below. Team 1 | | Team 2 6 1| 0| 3 7 8 4 2| 1|4 6 8 9 9 6 3| 2|5 7 Key: 4|0|2 means 4 points for Team 1 2points for team 2 What is the

    asked by Anonymous
  118. algebra

    How do I rewrite this equation using radicals instead of rational exponents? I rewrote the whole equation in simplest form 25x^(11/10)4√y How do I rewrite it with radical exponents?

    asked by Maggie
  119. English

    2.The child was reluctant to (access/venture) into the closet at night because he was unsure whether child-eating monsters really inhabited it in the dark Venture? 3.Th Members of the student council(circulated/convened) promptly affter school to finish

    asked by M
  120. english

    In the following sentences, what word does the participial phrase modify? Everyone in the annex heard her screaming loudly. (1 point) a) everyone b) annex c) heard d) her pl E A S E HE L P

    asked by dd
  121. Government

    1. Suppose that the Articles of Confederation are still in force and that a resolution has been proposed that would abolish the executive committee and replace it with a president. Now suppose that, out of the thirteen states, only Pennsylvania did not

    asked by Nadia
  122. english

    which sentence contains a participial phrase? a) she wanted to spend time writing. b) her job is giving the attic dwellers their food. c) quickly snatching up the coat, she ran to her room. d) to get along well requires cooperation. which sentence contains

    asked by dd
  123. Language Arts

    I had to put transition words, fix any mistakes, and make the following paragraph better. It is on a book called Tuck Everlasting. It is a paragraph saying the similarities of the book and movie version. This is the best I could do. Can u see what you can

    asked by Kaashif
  124. Finite Math

    P(R or S)=.64 P(R)=.38 P(S)=.52 Probability Union Rule P(R and S)=P(R)+P(S)-P(R and S) .64=.38+.52-P(R and S) .54=.9-P(R and S) At this point, how do I deal with the -P(R and S)? I know the final answer is .26, but how do I get there?

    asked by Ken
  125. math

    The school raised $1518.75 by charging an adult $3.75 and a student $2.50. The total attendance was 520. express each equation in slope-intercept form and graph each line ?

    asked by TJ
  126. Science

    H2) -----> H^+ + OH^- Is this equation balanced

    asked by M
  127. Algebra

    (t^(1/2)+2)^2

    asked by Vicki
  128. Math

    Bob has designed a rectangular storage unit to hold large factory equipment. His scale model has dimensions 1 m by 2 m by 4 m. By what amount should he increase each dimension to produce an actual storage unit that is 9 times the volume of his scale model?

    asked by Max
  129. Science

    what is an isotope

    asked by M
  130. math

    A nickel is 1/16 of an inch thick.Carrie has 7 nickels,what is the thickness of her 7 nickels?

    asked by Anonymous
  131. Math

    Your teacher made the comment that more than 100, 00 ping pong balls would fit in the school gym. develop a calculation method to see if she is right. after taking some measurements, propose the amount the gym would hold. i din't really understand how to

    asked by Angelina
  132. Algebra

    (5x^(1/3)+1)(25x^(2/3)-5x^(1/3)+1)

    asked by Vicki
  133. ART

    I've been searching for this question about Ben Quilty .Can you please see if there is an answer on websites the question is What training did Ben Quilty undertake to become an artist ?

    asked by SARINA
  134. english

    2. Which of the following is the best reason to use visuals in a research presentation? A)) to illustrate your main point in an engaging manner B)) to illustrate any topic with data in percentages C)) to show different ways of looking at the same

    asked by dd
  135. Algebra

    What is the square root of 49a^4+686a^3+2401a^2 Do NOT assume that a represents a positive number

    asked by Vicki
  136. algebra

    how to solve 3/(x^2-9)-x/(x^2-6x+9)+1/(x+3)

    asked by Corey
  137. Physics

    Radio waves travel at the speed of light, which is 3.00 ✕ 108 m/s. What is the wavelength for a FM station broadcasting at 97.9 MHz (the prefix M is "mega" and means 106)?

    asked by Ginny
  138. Physics

    What is the fundamental frequency on a 5 m rope that is tied at both ends if the speed of the waves is 24 m/s?

    asked by Ginny
  139. Science

    Which two elements represent the same family of the periodic table? Hydrogen Helium Lithium Fluorine Is it none??

    asked by M
  140. physics

    Consider eight two-cubic centimeter (2 cm3) sugar cubes stacked so that they form a single 2 x 2 x 2 cube. How does the surface area of the single, large cube compare to the total surface area of the individual eight cubes? Report your answer as a ratio.

    asked by Ciara
  141. Math

    On Tuesday, Leslie spent 47 minutes on math homework, 39 minutes on science homework, 52 minutes on English homework, and 44 minutes on history homework. How much time did Leslie spend doing her homework on Tuesday?

    asked by Maddie
  142. Math

    I have to find the median, the lower quartile, the upper quartile, minimum number, and maximum number of this data set I just want to make sure I am right. 73,73,78,78,81,87,89,92,93,95 My answers Median=84 Lower quartile=78 Upper quartile=92 Minimum

    asked by Anonymous
  143. art

    Sorry to bother you again its also this last question What feelings are expressed in the Margaret Olley? any websites in mind if yes thankyou so much

    asked by SARINA
  144. geometry

    use the midpoint formula to find endpoint c. A = (-3, 2) B is midpoint (5, -4). I know AB is I/2 of AC. I tried and got x= 14, y= -11. Correct? and how do you graph it? Thanks

    asked by kirk
  145. math

    Estimate 99 9/19 + 1/5, Use benchmarks to estimate the total

    asked by karen
  146. Art im so sorry whoever is reading this

    sorry it was about her i needed the painting of her by Ben Quilty what feeling are expressed in the painting still are there any websites please

    asked by SARINA
  147. Calculus

    Let f(x)=(lnx)^4 f'(x)=4(ln(x))^3/x what is f'(e^2)=?

    asked by Dani
  148. AP CALC

    At any time t=>0 , in days, the rate of growth of a bacteria population is given by y' = ky, where y is the number of bacteria present and k is a constant. The initial population is 1500 and the population quadrupled during the first two days. By what

    asked by Rachel
  149. Math

    Ms. Allison drew a box-and-whisker plot to represent her students scores on a midterm test. These are the numbers on the box-and-whisker plot. Lowest value=44 Lower quartile=47 Median=52 Upper quartile=81 Highest value=96 Jason received 81 on the test. How

    asked by Anonymous
  150. Chemistry

    A 25.00 mL sample of HCl was titrated with 35.79 mL of 0.250 M KOH. The concentration of the HCl solution is:

    asked by Kay
  151. English

    Which sentence should be edited to eliminate its cliché? A. The texture of the burlap was a cross between woven straw and a three-day beard. B. The family was immensely relieved when Great-Aunt Martha's condition progressed from "critical" to "it looks

    asked by Lauren
  152. Math

    Which stem-and-leaf plot represents the data set below? 56,65,67,72,85,88,89,96,97,104,113 A. 5|6 6|5 7 7|2 8|5 8 9 9|6 7 1|04 1|13 Key:8|9 means 89 B. 5|6 6|5 7 7|2 8|5 8 9 9|6 7 1|0 4 1|1 3 C. 5|6 6|5 6 7 7|2 8|5 9 9|6 7 8 10|4 11|3 D. 5|6 6|5 7 7|2 8|5

    asked by Anonymous
  153. Physics

    Which of the following household electrical appliances has the greatest rate of energy consumption? ITEM VOLTAGE CURRENT A. Video Camera 6.0 V 1.6 A B. Radio 4.5 V 0. 45 A C. Cassette Recorder 6.0 V 2.2 A D. Ghetto Blaster 12 V 1. 4 A .

    asked by sarah
  154. Chem

    The following represent the Ka values for a series of weak acids. Which would be the best choice to prepare a buffer at pH=4.00? 2.7 x 10^4 1.2 x 10^-4 4.3 x 10^-8

    asked by Amanda
  155. math

    Determine whether it is possible to draw a triangle given each set of information. Sketch all possible triangles where appropriate. Calculate then label all side lengths to the nearest tenth of a centimetre and all angles to the nearest degree. A) b= 3.0

    asked by Mimi
  156. chemistry

    calculate the density of NH3 gas at s.t.p.

    asked by gayflor
  157. algebra II

    if a pitcher is just as likely to throw a ball as a strike, find the probability that t11 of his first pitches are balls.

    asked by Mathquestions
  158. English

    A _______ can be used for both organizing and revising an essay. A. graphic organizer B. flowchart C. verbal sketch D. topic sentence my answer is a.

    asked by Lauren
  159. calc

    A company runs food service concessions for sporting events throughout the country. Their marketing research department chose a particular football stadium to test market a new jumbo hot dog. It was found that the demand for the new hot dog is given

    asked by Dan
  160. Chemistry

    How many grams of AlNO3 could be used to make the following prescription isotonic? Sol.Silver Nitrate 2.5% Sodium chloride q.s. Sterile water for injection There is only anhydrous dextrose 5% available

    asked by herry
  161. calc

    Let f(x)=2x+15−19ex. Then the equation of the tangent line to the graph of f(x) at the point (0,−4) is given by y=mx+b for m=? b=?

    asked by Anonymous
  162. Pre-Calculus

    Convert from standard to vertex form: (x+5)(x+4) x^2+ 9x + 20 (x+3)^2 + 20 - 9 (x+3)^2 + 11

    asked by Lucina
  163. Physics

    A 2.0kg object initially at rest explodes breaking into two pieces of mass 5.0kg and 15.0kg. If the 15.0kg piece moves with a speed 2m/s what is the speed of the 5.0kg piece? A. -6 m/s B. 15 m/s C. -5 m/s D. 20 m/s

    asked by Natalie
  164. Math

    Determine whether it is possible to draw a triangle given each set of information. Sketch all possible triangles where appropriate. Calculate then label all side lengths to the nearest tenth of a centimetre and all angles to the nearest degree. A) b= 3.0

    asked by Mimi
  165. Physics

    an object falls from a 3m height what is the speed of the object just before it touches the ground?

    asked by Kat
  166. chemistry

    a container with an initial volume of 6 liters at a temperature of 30 degrees celsius with a pressure of 2atm is changed so the temperature is now 90 degrees celsius and the volume is 8 liters. calculate the new pressure

    asked by Anonymous
  167. physics

    a skier decides to ski down a hill inclined at 12 degrees to the horizontal. He pushes on his poles and starts to slide down the slope. If his initial speed after he stops pushing is 4.7 m/s and us= 0.28, how far will mr.grewal slide down the hill before

    asked by Tom
  168. Physics

    A 1-kg ball initially moving with a speed of 3m/s strikes a stationary 2kg ball head-on. After the collision both balls stick together. What are the final velocities of the two balls?

    asked by Nate
  169. Algebra 1

    Find the vertex for y= -x^2+1/2x+2 I could not figure out the vertex! Please help me!

    asked by Rae
  170. Chemistry (isotonicity)

    How many milligrams of NaCl should be used to make the following prescription isotonic? Dextrose anhydrous 2.5% Sodium chloride q.s. Sterile water for injection Ad 1L There is only dextrose anhydrous 5% available

    asked by herry
  171. Help please

    A hard-rubber or plastic comb rubbed against wool can often be shown to have a static charge. Why does a metal comb not readily show a static charge when rubbed against wool?

    asked by Ciara
  172. history

    what are three things about Washington that made him the overwhelming favorite for the first president of the United States?

    asked by jamisha
  173. Physics

    a 12 kg physics book flies through the air with a momentum of 20kg m/s. what is its speed?

    asked by Natalie
  174. Chemistry

    Can anyone help me identify the solute and solvent in each solution with the steps if possible? Thanks! a. 10mL of acetic acid and 200mL of water b. 100.0g of water and 5.0g of sugar c. 1.0mL of Br2 and 50.0mL of methylene chloride

    asked by Anonymous
  175. LA/READING(:

    13. What is the best paraphrase of the first stanza? (1 point) I have a special place at the river where the wind goes through my hair and the ripples run across the river. I sometimes fish at the river. Sometimes I think about my life when I look at the

    asked by Linda
  176. science please help asap

    1.a ball with a mass 2kg rests on an incline with an angle of 10 degrees. The ball is released to roll down the incline plane neglecting all friction: Determine the following: A.the loss in potential energy after it has rolled 12m. B.the velocity after it

    asked by Bettina
  177. Socials

    How does education affect population growth? How does limiting birth rate affect population growth?? Please give me some good ideas, I already have some but I need more because I have to write an essay so please give me as many ideas as u can :) very much

    asked by Sarah
  178. Physics

    A rescue helicopter is lifting a man (weight = 868 N) from a capsized boat by means of a cable and harness. (a) What is the tension in the cable when the man is given an initial upward acceleration of 1.83 m/s2? (b) What is the tension during the remainder

    asked by Kristyn
  179. Physics

    A hard-rubber or plastic comb rubbed against wool can often be shown to have a static charge. Why does a metal comb not readily show a static charge when rubbed against wool?

    asked by Ciara
  180. Math

    Explain in a variety of ways how you can distinguish the exponential function f(x)=2^x from the quadratic function f(x)=x^2 and linear function f(x)=2x. (Hint: Compare the rate of change using finite differences in table of values; identify a constant

    asked by Piper
  181. 1 question LA AM I RIGHT?

    "The River" 1 I sit on the bank in my special place, 2 Feel the breeze that lifts my hair, 3 And watch the ripples run across the river. 4 It is so peaceful here. 5 Deep enough to justify a fishing pole, 6 Quiet enough for my every thought, 7 The perfect

    asked by Linda
  182. science please help

    1.a ball with a mass 2kg rests on an incline with an angle of 10 degrees. The ball is released to roll down the incline plane neglecting all friction: Determine the following: A.the loss in potential energy after it has rolled 12m. B.the velocity after it

    asked by Buhle
  183. helpppppp??? please

    Poets use imagery and words with different connotations and denotations. In a paragraph, define and provide an example of imagery, connotation, and denotation. Then, explain how poets use these elements to contribute to tone in a poem. Support your answer

    asked by Linda
  184. math please help

    Determine whether it is possible to draw a triangle given each set of information. Sketch all possible triangles where appropriate. Calculate then label all side lengths to the nearest tenth of a centimetre and all angles to the nearest degree. A) b= 3.0

    asked by Mimi
  185. Calculus

    a 12 foot ladder is leaning against a building. If the bottom of the ladder is sliding along the pavement directly away from the building at 1 feet/second, how fast is the top of the ladder moving down when the foor of the ladder is 2 feet from the wall?

    asked by Billy the Goat
  186. Chemistry

    If you have 324 grams KBr and want to produce a 1.48 M solution in water how many grams of water are needed?

    asked by Angela
  187. chem

    Alka-Seltzer contains the base sodium hydrogen carbonate, NaHCO3, which reacts with hydrochloric acid in the stomach to yield sodium chloride, carbon dioxide, and water. What volume of CO2 gas at 104.5 kPa and 311 K would be formed when 10.0 mL of 1.0 M

    asked by vc
  188. chem

    A typical fluorescent light bulb contains argon gas and mercury vapor.? a. If the total gas pressure in a fluorescent light bulb is 307.1 Pa and the partial pressure of the argon gas is 306.0 Pa, what is the partial pressure of the mercury vapor? b. If a

    asked by vc
  189. physics

    An elevator and its load have a combined mass of 1962 kg. Find the tension in the supporting cable when the elevator, originally moving downward at 7.5 m/s, is brought to rest with constant acceleration in a distance of 4.2 m.

    asked by joe
  190. PLEASE HELP?????LANGAGUE ARTS

    13. What is the best paraphrase of the first stanza? (1 point) I have a special place at the river where the wind goes through my hair and the ripples run across the river. I sometimes fish at the river. Sometimes I think about my life when I look at the

    asked by Linda
  191. PHYSICS

    What power (in horsepower) is developed by a grinding machine whose wheel has a radius of 8.10 in and runs at 2.50 rev/s, when the tool to be sharpened is held against the wheel with a force of 43.0 lb? The coefficient of friction between the tool and the

    asked by Beckles
  192. Chemistry

    The ethylammonium ion, CH3CH2NH3+, has a pKa of 10.81. It reacts with water to form ethylamine, CH3CH2NH2 and H3O+. Which of the following statements is true at pH 7? A.) ethylamine predominates B.) ethylammonium ion predominates C.) the pH is higher than

    asked by Kristin
  193. Chemistry

    The Ka for the reaction of acetic acid and water is 1.8 x 10-5. Which of the following statements is true at pH 7? A.) there is much more acetic acid than acetate ion B.) there is more acetate ion than acetic acid C.) the concentration of acetate ion is

    asked by Kristin
  194. intermediate algebra

    3/(x^2-9)-x/(x^2-6x+9)+1/(x+3)

    asked by Tripp
  195. IINFORMATION SYSYTEM

    forwarding table using switches

    asked by SHYAM
  196. 1 question omh help??

    1 I sit on the bank in my special place, 2 Feel the breeze that lifts my hair, 3 And watch the ripples run across the river. 4 It is so peaceful here. 5 Deep enough to justify a fishing pole, 6 Quiet enough for my every thought, 7 The perfect place to

    asked by Linda
  197. social studies

    What incentive did Spanish explorers have for settling the Caribbean islands? a)spices and silks b)faster trade routes c)land for plantations*** d)abundant sources of furs

    asked by #HOMEWORK
  198. Math

    carla has several bags of candy that have different weights. Each x represents one bag. Carla wants the total weight of the bags to be four pounds. If she can only pick one more bag, which one should she pick

    asked by Sharon
  199. Accounting

    1/2/15 Purchased patent (6-year life) $521,580 4/1/15 Goodwill purchased (indefinite life) 395,170 7/1/15 14-year franchise; expiration date 7/1/2025 519,400 9/1/15 Research and development costs 169,890 Prepare the necessary entries to record these

    asked by Anonymous
  200. Calculus

    a 14 foot ladder is leaning against a building. If the bottom of the ladder is sliding along the pavement directly away from the building at 3 feet/second, how fast is the top of the ladder moving down when the foor of the ladder is 5 feet from the wall? I

    asked by Billy the Goat
  201. Calculus

    Find the rate of change of total revenue, cost, and profit with respect to time. Assume that R9x) and C9x) are in dollars. R(x)=60x-0.5x^2 C(x)=5x+15 x=30 and dx/dt=20 units per day

    asked by Billy the Goat
  202. Chemistry

    Sodium vapor lamps are often used in residential street lighting. Sodium gives off two yellow lines of light having frequencies of 5.09 × 1014 Hz and 5.08 × 1014 Hz. What is this wavelengths of light in nm? would I start by using the following formula

    asked by Stacie
  203. physical science

    What is the amplitude of a longitudinal wave

    asked by justin
  204. Chemistry

    What is the volume, in milliliters, required to prepare a. 20.0 mL of a 0.250 M KNO3 solution using a 6.00 M KNO3 solution b. 25.0 mL of a 2.50 M H2SO4 solution using a 12.0 M H2SO4 solution c. 0.500 L of a 1.50 M NH4Cl solution using a 10.00 M NH4Cl

    asked by Anonymous
  205. Accounting

    Bus Acquired Cost Salvage Value Useful Life in Years 1 1/1/13 $98,100 8,000 5 (straight-line) 2 1/1/13 129,000 11,900 5 (decline balance) 3 1/1/14 79,780 8,200 4 (units-of-activity) For the declining-balance method, the company uses the double-declining

    asked by Anonymous
  206. Calculus

    Cost: C^2=x^2+98*sq rt of x + 57 Revenue:890(x-4)^2+29R^2=26,100 Find the marginal cost dC/dx at x=4

    asked by Frankzilla
  207. Calculus

    Evaluate dy/dt for 2xy-2x+2y^3=-10 with the conditions dx/dt=-4 x=2 y=-1 dy/dt=?

    asked by Frankzilla
  208. social studiesssssssssssssssssssssssssssss

    2. Why did the United States enter World War I? (Choose all that apply.) (2 points) U.S. leaders wanted German territory. U.S. leaders wanted to aid German efforts in the war. U.S. leaders believed Germany had violated international law. The U.S. economy

    asked by Linda
  209. Math

    Transform the graph of f(x)=3^x to sketch g(x)=3^−(x+1) −2. Show table of values and each transformation clearly to get full marks. (15,marks)?

    asked by Piper
  210. science 1 question

    4. When a fan is turned on, it changes electrical energy into __________ energy. (1 point) motion magnetic gravitational*** electromagnetic

    asked by Linda
  211. social studies

    1.which of the following was a positive effect on the industrial revolution a)cities became overcrowded b)militarism c)fascism d)depression

    asked by #HOMEWORK