Questions Asked on
June 18, 2012

  1. maths

    if cot (a+b)=0 then write the value of sin(a+2b)

  2. math

    prove that cosx(tanx+2)(2tanx+1)=2secx+5sinx

  3. maths

    Prove that (2√3+3)sinx+2√3cosx lies between -(2√3+15) and (2√3+15)

  4. Math

    If a baseball is projected upward from ground level with an initial velocity of 64 feet per second, then its height is a function of time, give by g(t)= -16^2 + 64t. What is the maximum heigh reached by the ball?

  5. Statistics

    A 95% confidence interval for a population mean, ?, is given as (18.985, 21.015). This confidence interval is based on a simple random sample of 36 observations. Calculate the sample mean, x ?, and the sample standard deviation, s. Assume that all

  6. math

    prove that 2sinxcosx-cosx/1 -sinx+sin^2x-cos^2x=cotx

  7. chemistry

    suppose 250 mL of a .433 M solution of CuCl2 is electrolyzed. how long will a current of 75A have to run in order to reduce the concentration of Cu2+ to .167M? What mass of Cu will be deposited on the cathode during this time?

  8. Physics

    A 140 g baseball is dropped from a tree 15.5 m above the ground. With what speed would it hit the ground if air resistance could be ignored? If it actually hits the ground with a speed of 8.00 m/s, what is the magnitude of the average force of air

  9. algebra math

    If 3 is raised to the 59th power, i.e. 359, what is the units digit? The units digit is the digit in the ones place. Explain the method used to find your answer.

  10. maths

    if tanX=a/b, then show that asinX-bcosX/asinX+bcosx = a^2-b^2/a^2+b^2

  11. Physics

    A 80 kg skier grips a moving rope that is powered by an engine and is pulled at constant speed to the top of a 25 degree hill. The skier is pulled a distance x = 230m along the incline and it takes 2.3 min to reach the top of the hill. If the coefficient

  12. physics

    The distance between successive crests in a series of water waves is 5.0m; the crests travel 8.6m in 5.0s . Calculate the frequency of a block of wood bobbing up and down in the water

  13. hysical edu

    Roger is a single father of two young daughters and has been dating Cheryl for the past two years. He recently learned that his company is going to downsize. Although Roger is financially stable, he is worried that his job is in jeopardy. He hasn't told

  14. Physical Edu

    The transformation of love progresses in the following way: a. high levels of passion, increasing intimacy, diminished romance, enduring love. b. high levels of passion, increasing intimacy, diminished romance, breakup of relationship c. sex, passion,

  15. math

    joe has $450 dollars to spend on the office party he spends half of the money on food and1/3 on the decorations which fraction represents the portion of the money he spends on food and decorations?

  16. Math

    the perimeter of an equilateral triangle is 50 inches longer than the length of one side. What is the length of one of the sides?

  17. business law

    directors and officers who exploit their positions for personal gain are violating the? a. business judgment rule b.fairness rule. c.insider trading rule d. corporate opportunity doctrine I am fighting between C and D and not sure which one it is. But I am

  18. physical Edu

    Which is a common expectation that can hurt a relationship? a. expecting your partner to change b. expecting that your partner loves you c. expecting intimacy d. expecting that you can trust your partner is it A

  19. Business Math

    Joanne Flynn bought a new boat for $16,200. She put a $2,800 down payment on it. The bank’s loan was for 50 months. Finance charges totaled $5,380.00. Assume Joanne decided to pay off the loan at the end of the 22th month. (Rule of 78) What rebate would

  20. math

    prove that sec(3 pie/2 -x) sec(x-5 pie/2) + tan (5 pie/2+x)tan(x-3 pie/2)=-1

  21. stat

    if the probability of a newborn child being female is 0.5, find the probability that in 100 births, 55 or more will be female.use the normal distribution to approximate the binomial distribution

  22. physcial Edu

    All of the following are recommended by your text as time-management strategies, EXCEPT a. setting priorities. b. breaking down long-term goals into short-term ones. c. avoiding unstructured time. d. keeping track of tasks you put off. is it C

  23. Statistics

    A researcher determines that 42.7% of all downtown office buildings have ventilation probles. Is this census data or sample data?

  24. math

    approximate .68 inch to the nearest eight of an inch

  25. chemistry

    will fe3+ oxidize Sn2+ to Sn4+ in acidic solution?

  26. vocabulary

    The ----------- definition of gloomy is dismal or depressing.

  27. Chemistry

    List three advantages and three disadvantages of improvised apparatus in teaching chemistry?

  28. physics

    An 85 kg football player traveling 4.7 m/s is stopped in 1.0 s by a tackler. What is the original kinetic energy of the player? (I tried using 1/2 m v^2 but that doesn't seem to be right. How do I manipulate the formula?) What average power is required to

  29. Chemistry

    What alkane effuses at 1/5 the rate of He

  30. physical Edu

    The fight-or-flight response prepares the body for physical action regardless of whether action is needed. is it True

  31. physical Edu

    There is no link between cardiovascular heart disease and stress. Its false right?

  32. abnornal psych

    should suicide be added to the DSM IV- TR and what are the reason for and aganist establishing a specific disorder related to suicide?

  33. AP Chem

    How many liters of carbon dioxide will go into the air when 642.9 grams of gasoline (C8H18) is burned in complete combustion at STP?

  34. Geometry

    In the diagram below, the length of the legs AC and BC of right triangle ABC are 6 cm and 8 cm, respectively. Altitude CD is drawn to the hypotenuse of △ABC. What is the length of AD to the nearest tenth of a centimeter?

  35. accounting

    Assume the $10,000 Treasury bill, 4% for 13 weeks. Calculate the effective rate of interest.(Use calendar year. Round your answer to 2 decimal places. Omit the "%" sign in your response.)

  36. Math Check please

    Will you please check my work for me. 1)The equation of a parabola is shown. y=1/14X^2. What are the coordinates of the focus? (0,3.5)

  37. chemistry

    how many grams of c2h6o contain the same number of oxygen atoms as 0.75 mol of h2o?

  38. statistics

    11. A local health care company wants to estimate the mean weekly elder day care cost. A sample of 10 facilities shows a mean of $250 per week with a standard deviation of $25. What is the 90 percent confidence interval for the population mean?

  39. Chemistry

    If I add 0.348 liters of 5.25% bleach(Sodium Hypochlorite) into 4 liters of water, what is my concentration in ppm ?

  40. Algebra2(check)

    Would someone please check my answer for me? 1)The equation x2 + (y + 4)2 = 49 models the boundary on a local map for which Darren can hear his friend Tom on his two-way radio when Darren is at home. How far (in miles) can Tom walk from Darren's home and

  41. chemistry

    a sample of vapor weighing 0.745 g filled a 250 ml flask when placed in a water bath at 98 degrees celsius. the barometric pressure that day was 753 torr. calculate the volume of the vapor at stp, and the weight of one mol of the volitile liquid

  42. chemistry

    a sample of vapor weighing 0.745 g filled a 250 ml flask when placed in a water bath at 98 degrees celsius. the barometric pressure that day was 753 torr. calculate the volume of the vapor at stp, and the weight of one mol of the volitile liquid

  43. chemistry

    calculate the reduction potential for hydrogen ion in a system having a perchloric acid concentration of 2.00 x 10^-4 M and a hydrogen pressure of 2.50 atm.

  44. Physics

    A bouncing ball returns to the same height each time. Is this an example of simple harmonic motion? Explain your answer.

  45. Science

    An Object of mass 0.5kg is whirled at the end of string 0.8m long. If the strings makes three revolutions in 1.2sec, find the tension in the string.

  46. Foreign languages

    Thank you very much for your help. I just wanted you to check these sentences. 1) He begged to leave. He appears to be a nice man. He asked to leave the room. 2) He avoided failing the course. They consider selling their old furniture. 3) He chose not to

  47. Physics

    A 23-kg boy stands 3 m from the center of a frictionless playground merry-go-round, which has a moment of inertia of 180 kg m2. The boy begins to run in a circular path with a speed of 0.6 m/s relative to the ground. (a) Calculate the angular velocity of

  48. physics

    Forces of 86 N east, 23 N north, 46 N south, 55 N west are simultaneously applied to a box of mass 13.8 kg. Find the magnitude of the box's acceleration?

  49. chemistry

    Hydrochloric acid reacts with calcium to form hydrogen and calcium chloride. If 100 grams of hydrochloric acid reacts with 100 grams of calcium, what is the limiting reactant? 2HCl + Ca --> CaCl2 + H2

  50. stat

    assume that the heights of men are normally distributed with a mean of 68.4 inches and a standard deviation of 2.8 inches.if 64 men are randomly selected, find the probability that they have a mean height greater than 69.4 inches

  51. Math

    A line segment begins at point (3,4) and has a length of 13 units. What are the possible endpoints of this line segment?

  52. Chemistry

    At constant temperature and pressure, what is the maximum volume, in liters, of HNO3(g) that can be made from 10.39 L of NO2(g) and 15.53 L of H2O(g)? I don't even know how to start it...

  53. math

    Please help with this problem. Compute the following volume and surface area. A rectangular solid has sides of 7 cm, 9 cm, and 11 cm. What is its surface area. ________ square centimeters

  54. physical edu

    Homeostasis a. is a state of unmanaged stress. b. describes the body during the fight-or-flight reaction. c. is a state of normal "housekeeping" functions. d. is the response of the body to prolonged exposure to stressors. I'm confused between D & B

  55. economics

    what is micro goods.?

  56. Physics

    Two waves travel in the same medium at the same speed. One has wavelength 0.0382 m and frequency 9.67×106 Hz. The other has wavelength 0.0486 m. What is the period of the second wave?

  57. english

    jeanne became a baton twiler thinking it would make her more acceptable to the caucasian students

  58. physical science

    if a ball is thrown straight up at a speed of 34.7m/s how long in seconds will it continue to rise before it starts to fall back down?

  59. Math

    11+2*(6+11)

  60. Math

    d=rt for r

  61. Algebra2(check answers)

    Will someone please check my answers? 1)Ping is deciding what to choose for dinner from a menu. He can choose 1 of 4 pasta meals, 1 of 6 chicken meals, or 1 of 3 fish meals. How many ways can Ping choose a dinner meal? a)13

  62. Math

    0.05x +0.10y=1.30 x+y=19

  63. math

    write 15 1/4 as a decimal number

  64. social studies

    Between 1935 and 1957, a period that included World War II, the birth rate rose from 16.9 to 25 per 1000 people. What was the most likely cause of this "baby boom?" A) the change in view toward artificial birth control methods B) the return of young

  65. Math

    Find the value of the derivative of y=sin^2(0.25x^4) at the point (ð,0.17)

  66. chem

    How many molecules of (CH3)2NH are needed to react completely with 2.00mg of H2C2O4? Help i don't understand this process!

  67. geometry

    Let p and q be two statements as shown. p: The carpet is rectangular. q: The carpet is black. Which of these correctly describes the truth value of the symbolic statement ?

  68. math

    The world record for a jump by a frog is 19 feet 3 1/8 inches.How much farther would a frog need to jump to set a new world record of 7 yards?

  69. math

    In the Malagasay Indian tribes, it is against the law for a son to be taller than his father. If a son is taller, he must give his father money or an ox. Suppose a father is 5 feet 10 1/2 inches tall and his son 5 feet 6 3/4 inches tall. How many more

  70. math

    -3x+5y=1 9x-3y=5

  71. Statistics

    A company has two factories in which they manufacture engines. Once a month they randomly select 10 engines from each factory and test if there is a difference in performance in engines made in the two factories. This month the average output of the motors

  72. Statistics

    An organization is studying whether women have caught up to men in starting pay after attending college. They randomly sampled 28 women, who earned an average of $38,293.78 out of college with a standard deviation of $5,170.22. Twenty-four men were also

  73. chemistry

    Jan drives her car to school each day. If it takes her 12 minutes to drive one way, how many hours a week does Jan spend driving?

  74. Math

    3x-4y=9 -3x+4y=12

  75. MATH

    Which value for slope represents the steepest line? Explain. Negative twelve-fifths or negative three or negative two-thirds or negative one

  76. math

    write y in terms of x 2x +3y=9

  77. MATH

    Adrienne had a pizza party at a local arcade. She spent twenty-four dollars for pizza and five dollars per person for games. Let c be the total cost of pizza and games, and let p be the number of people at her party. Write an equation to represent the

  78. math

    4y+5x=8

  79. math

    Find y given that x=3 2x-3y=5

  80. chem

    How many molecules of (CH3)2NH are needed to react completely with 2.00mg of H2C2O4? Help i don't understand this process!

  81. math

    ab+a=1for a

  82. chem

    How many molecules of (CH3)2NH are needed to react completely with 2.00mg of H2C2O4? Help i don't understand this process!

  83. chemistry

    a current is passed through 500 mL of a solution of CaI2. the following electrode reactions occur: anode: 2I- ---> I2 + 2e- cathode: 2H2O + 2e- ---> H2 + 2OH- after some time, analysis of the solution shows that 35.7 mmol of I2 has been formed. a) how many

  84. MATH

    Brandon received a book for his birthday and read seventy-six pages in 4 hours. Later, he read eighty-five pages in 5 hours. Does his reading follow a direction variation? Explain

  85. psychology

    In aversive conditioning, therapists attempt to reduce undesirable behaviors using which method?

  86. MATH

    Give an example of an ordered pair that is plotted by only moving up from the origin along the y-axis. Explain.

  87. chemistry

    2.35*10^-4M,,Mg(OH)2 what is the pH of this solution

  88. AP Chem

    A sample of 0.71 moles of a metal M reacts completely with excess fluorine to form 44.24 grams of MF2. How many moles of F are in the sample of MF2 that forms?

  89. math

    Find x given that y=2,z=-3 and w=4 wxy=5

  90. englishhow

    how the given sentence could be transformed into passive voice : whom the police held guilty of forgery ?

  91. physical science

    a ball was dropped off a cliff and took 3.59s to fall to the water below. neglecting air resistance how fast in m/s was the ball moving just as it hit th water

  92. Bible hmwk translation

    Don't hold back good from those who are worthy of it. Don't hold it back when you can help. ( Please translate this, i don't understand it ) P.S.Its in Proverbs 3:27

  93. Foreign languages

    Thank you very much, Writeacher. I need to rephrase sentence 1. I also wonder if you could help me find online tests on verbs followed by the gerund/infinitive and on reporting verbs (possibly different from say, tell, ask). Thank you very much! 1) Briefly

  94. English/ Literature

    What does "wild card" mean? Choose any literary device?

  95. English/ Literature

    What do I do for diction? My teacher's definition is a word choice intended to convey a certain effect. Help, please! Also What is the significance of the title: The Lord of the Flies I think the title hardly goes with the main idea of the book

  96. GED-Word Problems

    Rob's tape measure is marked in centimeters. He is building a birdhouse from plans marked in inches. He needs a board 22 inches long. Karl knows there are 2.54 CM in 1 in. How can he figure out how many centimeters are 22 inches?

  97. math

    A function has the rule "multiply by three, and then subtract two." What is the output when the input is 8?

  98. to ms.sue

    for my project , there is 3 parts, do i put it on same project paper, ill start doing reading one tomorrow and ill do the rest in 4 weeks when i come home from my vacation.

  99. Business Statistics

    If M = 45 and SD = 5, what percentage of scores falls between 39 and 51.2? I need to work the problem in excel.

  100. physical science

    how much kinetic enery will the crate have as it fall and hits the floor rasing a 35kg crate a distance of 1.5m above storeroom floor

  101. Chemistry

    If I add 0.348 liters of 5.25% bleach(Sodium Hypochlorite) into 4 liters of water, what is my new concentration?

  102. Physics

    15.0 meters from a sound source that radiates freely in all directions, the intensity is 0.00230 W/m2. What is the rate at which the source is emitting sound energy?

  103. social studies

    supposed a president vetoed a bill passed by congress according to the information which of the following actions by congress would most likely ensure that the bill will become a law

  104. physical Edu

    Which of the following methods is considered a "contraceptive implant"? a. Depo-Provera b. Lunelle c. Implanon d. Seasonale is it B

  105. to ms.sue

    this is the 2012 project. the one i gave u was a 2010-2011 project Summer Science Poster Please select one of the four solar-energy-based topics listed below to research. Based on your research you are to create a poster that details what you learned.

  106. algesebra

    Darla is buildig a new desk. To make sure she made a square corner, she measures 3ft. from the corner along one edge and 4ft. from the corner along the other edge. How long should the diagonal be between those two points if the corner is a right angle?

  107. social studies

    which of the following best illustrates how a president can use the news media to reach the largest segment of the public

  108. algebra

    GUY WIRE. How long is a guy wire reaching from the top of a 15ft. pole to a point on the ground 10 feet from the pole? exact length in feet. length in three decimal places in feet.

  109. statistics

    1. A random sample of 100 computers showed a mean of 115 gigabytes used with a standard deviation of 20 gigabytes. What is the standard error of the mean?

  110. ALGEBRA

    The product of two consecutive positive even numbers is 728. What are the numbers? (Enter solutions from smallest to largest.) and

  111. Physics

    At time t = 0, you shoot a cannonball horizontally from the roof of a building at a velocity of 10 m/s. The building has a height of 80 m. Assume g = 10 m/s2 and that there is no air resistance. Write down the algebraic velocity equation for the

  112. Physics

    At time t = 0, you shoot a cannonball horizontally from the roof of a building at a velocity of 10 m/s. The building has a height of 80 m. Assume g = 10 m/s2 and that there is no air resistance. Write down the algebraic velocity equation for the

  113. English

    1. The following are a must-remember. 2. The following are a must-see. (Are both grammatical?)

  114. physical science

    a ball dropped off a cliff and took 3.59s to fall to the water below. neglecting air resistance how far in meters did it fall how far is it down to water

  115. College Essay

    One seemingly normal day in junior year, my friend and I were taking a train together home from school. We were on an extremely crowded F train headed for Queens. Packed against the door that separated one train car from another, overly warm and squished

  116. physical science

    what is change of [potential energy as result of this move of how much work is done in raising a 35kg crate a distance of 1.5m above a storeroom floor

  117. Calculus - please check my work

    Differentiate each function a) y = -3x^2 + 5x - 4 b) f(x) = 6/x - 3/(x^2) c) f(x) = (3x^2 - 4x)(x^3 + 1) the answers i got for each was: a) y'= -6x + 5 b) f'(x)= -6/x^2 + 6/x^3 c) f'(x)= 15x^4 + 6x - 16x^3 - 4 please double check and let me know if these

  118. math

    john bought a new mac laptop for 520.99 with 15% sales tax. what was the original price and tax?

  119. Physics

    A crate is given an initial speed of 3.1 m/s up the 29 degree plane shown in the figure . Assume coefficient of friction = 0.17. How far up the plane will it go? How much time elapses before it returns to its starting point?

  120. physics

    An A-frame made up of two uniform 150N, 3 m long beams pinned at the apex and resting on a frictionless floor. The base of each beam is separated by 3.5 m. A 500 N weight hangs from the apex. A tie rope connecting the two beams is parallel to the floor and

  121. Calculus - please check my work

    evaluate rounding to 2 decimal places if neccessary a) 1n5 = 1.61 b) lne^2 = 2 c) (lne)^2 = 1 please let me know if these are correct, thank you.

  122. geography

    The country in this region that is formed by two main islands is New Zealand Australia China Micronesia

  123. english

    it is sad that she could not arrive. could you pl explain the position and parts of speech of 'IT' in the given sentence

  124. health

    could you pl tell me the symptoms and diagnosis of bone cancer

  125. Calculus

    differentiate each function a) y = cos^3x b) y = sin(x^3) c) y = sin^2 xcos3x

  126. english

    would you pl explain conditional sentences and simple compound and complex sentences and their importance in eng language

  127. math

    i have one last question hannah sold some girl scout chips and received a 17% commission. if she makes about $100 about how much did she have in sales? is it $83.00

  128. Calculus

    determine the coordinates of two points on the plane with equation 5x + 4y - 3z = 6

  129. Physics

    A proton moving at 500000m/s enters a series of charged parallel plates. What is the impact speed on the last plate.

  130. social studies

    what do you mean by arise biosphere

  131. Calculus

    The position of a particle, s metres from the starting point, after t seconds, is defined by the function s(t) = 2t^3 - 7t^2 + 4 a) determine the velocity of the particle after t seconds b) determine the velocity after 5 seconds

  132. English

    1. He is doing a sit-up. 2. He is doing sit-ups. 3. He can do up 100 sit-ups. (Are they all grammatical?) 4. Am I favorite? 5. Am I his favorite? 6. Am I favorite of him? 7. Am I favorable to him? (Which one is grammatical?)

  133. English

    1. In my bag, I have two fishes. 1-1. In my bag, I have two fish. 2. In my bag, I have two food. 3. In my bag, I have food. 4. In my bag, I have two kinds of food. 5. In my bag, I have two kinds of foods. (Which one is grammatical? Would you check the

  134. English

    work-abstract noun money-material noun homework-abstract noun food - collective noun fruit - collective noun (Are the kinds of nouns explained correctly?)

  135. Physics

    A solid ball and a hollow ball, each with a mass of 2 kg and radius of 0.1 m, start from rest and roll down a ramp of length 2 m at an incline of 34°. An ice cube of the same mass slides without friction down the same ramp. What is the speed of the solid

  136. Physics

    A bicyclist starts from rest and accelerates at a constant rate for 15.0s. After 10.0s the bicycles front wheel is turning at a rate of 2.5 rev/s. The tire wheel has a diameter of 0.8m. A)Through how many revolutions does the wheel turn in the first 10.0s?

  137. Social Studies

    WHAT IS THE ACROSTIC FOR THE WORD "ECONOMICS" PLEASE HELP!! hehee

  138. math

    An investor bought 150 shares of an airline.She paid $60 per share for 50 shares $50 per share for 60 shares $75 per share for 40 shares what was her average price per share

  139. Physics

    A force, F = (3x + 4y) N, is applied to an object at a point whose position vector with respect to the pivot point is r = (3x + 3y + 3z) m. Calculate the torque created by the force about that pivot point. I know that torque = -12x + 9y + 3z, but why is

  140. physics

    A bullet of mass 30 gms is fired into a wooden block with mass 15kg by mans of a spring.The wooden block hangs from the ceiling by a wire.If the bullet and the block rise 0.50 m and the spring constant is 2000N/m. calculate the compression of the spring.

  141. maths

    prove that if cotx(1+sinx)=4m and cotx(1-sinx)=4n, then (m^2-n^2)^2=mn

  142. algebra

    can you help me simplify this (-2-2)[8+(7+8)]

  143. Art

    I left out the following sentences. Thank you, Writeacher. 1) I miss seeing my favourite TV shows. He neglected painting the back side of the house. 2) He neglected to paint the back side of the house (do they have the same meaning?)

  144. maths

    if sinX+cosX=m prove that sin^6X+cos^6X=4-3(m^2-1)^2/4 where m^2=

  145. ELA

    I am very bad in parts of speech so I need help! Find all the verbs in each sentnce 1. We spent a considerable amount of time hiking up the mountain. 2. It was a foolhardy to go over the waterfall. In a canoe. 3. In the carribean waters there are fish of

  146. physics

    A 20000 kg satellite is launched from the surface of saturn and put into orbit.The satellite is launched at the speed of 27.5 x 10^3 m/s. a)calculte the satellite's total energy. b)Its orbital radius c)If the satellite was shot straight up at the same

  147. maths

    if tan^2x=1-e^2, prove that secx+tan^3x cosecx = (2-e^2)^3/2

  148. psychology

    why should the DSM-IV-TR need both categories of Dissociative Amnesia and Dissociative Fugue

  149. UCF

    6) The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 88 inches, and a standard deviation of 10 inches. What is the likelihood that the mean annual precipitation during 25 randomly picked years will be less

  150. maths

    if sinx=cos^2x then write the value of cos^2x(1+cos^2x)

  151. Science

    A bullet weighing 25 gm fired from a G3 Infantry Assault Rifle achieves muzzle velocity of 800 m/s.

  152. maths

    write the value of 2(sin^6+cos^6)-3(sin^4+cos^4)+1

  153. physics

    A 66 kg skier starts from rest at the top of a 1200 m long trail which drops a total of 180 m from top to bottom. At the bottom, the skier is moving 11.0 m/s. How much energy was dissipated by friction?

  154. algebra 1

    If you are looking at a graph of a quadratic equation, how do you determine where the solutions are?

  155. physical science

    what is the kinetic energy of a 15g bullet that traveling at 450m/s

  156. physics

    Two Earth satellites, A and B, each of mass m = 960 kg, are launched into circular orbits around the Earth's center. Satellite A orbits at an altitude of 4500 km, and satellite B orbits at an altitude of 13600 km. a) What are the potential energies of the

  157. Chemistry

    What is the reason that chemists chatagories Fe,Co and Ni in the same group VIIIB?

  158. algebra

    P=2L+2W. Find the perimeter of a rectangle whose length measures 12 centimeters and whose width measures 5 centimeters.

  159. Educational psychology

    Explean the chinese proverb "I hear and I forget;I see and I remember;I do and I understand",from instructional materials and active learning dimensions.

  160. Art

    Writeacher, could you please check these questions? Thank you. I need to express question number 3 in a different way. 1)Briefly analyze the works of at least two authors (also: of those authors?) (we dealt with in class) who showed a deep social

  161. Physics Help

    A force sensor is used to measure a force applied to a 9.1 kg box on a hard, horizontal surface. It records that the box starts to move when the force is equal to 26.9 N. This force makes the box start to move with an acceleration of 0.2 m/s2. Find mu sub

  162. math

    draw a rectangle 3 X 4 with 5/12 shaded

  163. johnson

    Work these titration calculations: 1. A titration of 15.0 cm3 of household ammonia, NH3, required 38.57 cm3 of 0.78M HCl. Calculate the molarity of the ammonia. 2. What volume of 0.5M HNO3 is required to neutralize 25 cm3 of a 0.2M NaOH solution? 3.

  164. music read

    Over the last century, do you think music has changed from being about artistic expression to being more about money and business? Why or why not?

  165. Chemistry

    I don't know if I should be posting this on a new session or just the old one; I asked it yesterday and I have not seen a reply I have: the half life of U-238 is 4.5 x 10^9 yr. A sample of rock of mass 1.6g produces 29 disintegrations per second. find

  166. Algebra2 ( Check)

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