1. physics

    A small turbo-prop commuter airplane, starting from rest on a Tallahassee airport runway, accelerates for 21.0 s before taking off. Its speed at takeoff is 56.0 m/s (125 mi/hr). Calculate the acceleration of the plane, assuming it remains constant. Express

    asked by Lo on January 9, 2011
  2. Chemistry

    Complete combustion of a sample of a hydrocarbon in the presence of excess oxygen produces equal molar quantities of carbon dioxide and water. Which of the following could be the molecular formula of the compound? a. C4H4 b. C2H6 c. C6H6 d. C8H8 e. C8H16 I

    asked by Anonymous on September 17, 2018
  3. !math (2)

    The demand function for a certain brand of CD is given by p = −0.01x^2 − 0.2x + 10 where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. Determine the consumers' surplus if the market

    asked by Vanessa on April 24, 2014
  4. History

    Chinese "communes" were: A. Communist Party committee cadres. B. urban districts established by Mao Zedong. C. the modern equivalent of the traditional cottage industries in pre modern China. D. agricultural communities containing more than thirty thousand

    asked by angela on January 26, 2016
  5. Language Arts

    While"We the people"and"Making Tracks on Mars are both nonfictional literature about specific topics, the author of"We the People"uses explanatory style, not informative. This sentence is an example of what kind of organizational pattern? A. chronological

    asked by blue on October 15, 2014
  6. reflection and observation

    which of the following statements uses language best to present a clear picture of a childs behavior? A.beryl chose a green crayon to color the picture B.leslie ran to the door greeting his mother with open arms C.carolyn carried her books to the table my

    asked by susue on July 31, 2015
  7. Science

    What are the advantages of slower population growth? Please check your assigned reading and post your answer. We'll be glad to help you when we see your thoughts about this subject. No diseases and over crowd True. But a society can provide food, jobs, and

    asked by Mack on March 18, 2007
  8. Chemistry

    "Suppose some sort of clamp is applied to hold an electron fixed at the distance of 2.5 Angstroms from a lithium nucleus Li3+ which is also clamped into position. Calculate the magnitude of the force between the two fixed particles." The books says the

    asked by Zach on October 16, 2011
  9. Biology

    In a mycorrhizal relationship, what benefit does the plant get from the fungus? a. an energy source b. aid in seed dispersal c. products of photosynthesis d. aid in the absorption of water and minerals

    asked by Zurai on November 15, 2017
  10. AP Chemistry

    Nitroglycerin is a shock-sensitive liquid that detonates by the reaction 4C3H5(NO3)3(ℓ)-> 6N2(g)+10H2O(g)+12CO2(g)+O2(g) Calculate the total volume of product gases at 201 kPa and 273 degrees C from the detonation of 3.3 lb (1496.9 g) of nitroglycerin.

    asked by Gabriella on February 16, 2014
  11. Social studies

    Many people are emigrating from the Ukraine to other countries. What conclusion can best be deduced from this statement? A) The economy is growing. B) Freedoms have increased since the fall of communism. C) The nation lacks sufficient jobs and

    asked by LOVE on March 30, 2016
  12. Biology

    What are two traits of an information source that may indicate the information given is scientifically unreliable? Answer: peer review does not necessarily indicate that the other field expert reviews are in agreement with conclusions of the original

    asked by Please Help on August 28, 2014
  13. cultural diversity

    1. Young children's functional use of language within a work context is often observed in: A. Mainstream industrialized societies. B. Triadic interactions in Mexican-American groups. C. Rural Appalachian Black communities. D. Native American

    asked by Vanessa on September 21, 2011
  14. Biology

    What are two traits of an information source that may indicate the information given is scientifically unreliable? Answer: peer review does not necessarily indicate that the other field expert reviews are in agreement with conclusions of the original

    asked by Please Help on August 27, 2014
  15. Astronomy

    From Hawaii to the bend in the Hawaiian-Emperor chain is about 4000 km. If the Pacific plate is moving 8.0 cm a year, estimate how long ago the direction of plate motion changed. (The San Andreas Fault in southern California became active at about the same

    asked by Andy on November 24, 2011
  16. Education

    As children grow older and become more skilled in math, they A) rely more on memorized facts. B) count all the numbers instead of counting on from the largest number. C) must switch from multiplicative reasoning to additive reasoning. D) have a little more

    asked by Anonymous on September 17, 2013
  17. Math

    Each page of a top-secret report on aliens requires 2 KB of space in digital format. What is the maximum number of pages the report can have so that it can be completely stored on a USB drive that holds 4*10^6 Write your answer in scientific notation, and

    asked by Brad on October 16, 2018
  18. chemistry

    What is the volume of 6M H2SO4 required by the balanced equation to react with the CuO to produce 0.025 moles of copper(ii) sulfate. Report the volume needed BEFORE allowing for excess in milliliters to two significant figures. Don not include units in the

    asked by tj on October 1, 2014
  19. Applied Calculus

    A truck gets 800/x miles per gallon (mpg) when driven at a constant speed of x mph, where 40 ≤ x ≤ 80. If the price of fuel is $2.80/gal and the driver is paid $19/hr, at what speed is it most economical for the trucker to drive? (Round your answer to

    asked by Jacob on March 15, 2013
  20. history

    Anticolonial movements shared all but which of the following features? Answer A Some form of nationalism B Inspiration from traditional cultures as a means of shaping nationalism C Dissatisfaction among nationalists with their own exclusion from power D A

    asked by nicole on April 12, 2012
  21. english

    4. In both the Gettysburg Address and “Letter from Birmingham Jail,” the writers (1 point) comment on the tribulations faced by a nation at war. honor those who have fought for freedom. demand the revision of the nation’s unjust laws. expound on the

    asked by kate on August 13, 2014
  22. Physics

    An infinitely long thin metal strip of width w=12cm carries a current of I=10A that is uniformly distributed across its cross section. What is the magnetic field at point P a distance a=3cm above the center of the strip? I have tried using the integration

    asked by Joel on April 4, 2014
  23. History

    Opposition to strong environmental protection regulations was motivated by A, Concern that regulation would hurt the economy and kill jobs. B. conservative resistance to expanding federal authority. C.refusal to believe that pollution was a serious problem

    asked by Angie on April 7, 2016
  24. Trig

    A tourist looks from the observation deck of the space needle in Seattle. The deck is at a height of 520ft. She sees her friend on the ground below at an angle of depression of 83.1 degrees. What is the distance between the two? Round to the nearest tenth

    asked by Kay on February 28, 2018
  25. Psycholofgy

    Help is needed badly! I have been on this one questions for the longest, so I'm trying to see if this the correct answer. I chose C If a person believes that his or her mind is being controlled by outside forces or that he or she is getting special coded

    asked by Princess on December 6, 2011
  26. Computer Information

    What kind of drives are typically found in high-performance workstations and servers? Ultra ATA, EIDE, SCSI, or DMA. I think it is the SCSI drive, because the Data Recovery web site says that it "is widely used in medium and large systems." Is this answer

    asked by Mary on February 5, 2010
  27. !math (2)

    The demand function for a certain brand of CD is given by p = −0.01x^2 − 0.2x + 10 where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. Determine the consumers' surplus if the market

    asked by Mia on April 25, 2014
  28. L.A

    In The Diary of Anne Frank, Act 1, what is one effect of wearing the yellow star of David? A. It makes wearers feel proud. B. It leads to a shortage of yellow cloth. C. It creates a strong sense of community. D. It sets apart the people who are Jewish. Is

    asked by Anonymous on March 4, 2015
  29. Physics

    A device for training astronauts and jet fighter pilots is designed to rotate a trainee in a horizontal circle of radius 10.2 m. If the force felt by the trainee on her back is 7.61 times her own weight, how fast is she rotating? (in m/s) Express your

    asked by Cait on February 11, 2015
  30. Busiuness Law II

    Using the Internet, identify three firms that are offering to enter into bailment contracts with customers. 2. For each firm, analyze and describe (a) for whose benefit the bailment would be and (b) the duty that the bailor would owe to the bailee. Be sure

    asked by Elvis on August 5, 2010
  31. physics

    A ball is projected with initial velocity 50m\s at an angle of elevation of 37°from the top of a cliff 55m high. calculate the total time the ball is in the air and the maximum horizontal distance covered...please I have solved this question but didn't

    asked by mercy on November 20, 2016
  32. Physics

    In 1980, over San Francisco Bay, a large yo-yo was released from a crane. Suppose the yo-yo was 153 kg, and it consisted of two uniform disks of radius 35.4 cm connected by an axle of radius 3.19 cm. What was the magnitude of the acceleration of the yo-yo

    asked by M on March 17, 2012
  33. Chemistry

    A limiting reactants problem. 6.32g of sodium sulfate is reacted with 12.03g of barium nitrate. How many grams of the precipitate would you expect to collect. The answer my teacher gave me is 16.0g BaSO4, but I cannot get it. The equation I formed is:

    asked by Lindsey on April 15, 2012
  34. acc 305 accounting

    The fourth step in the financial accounting research process may require you to​ ________. A. cross reference information in the Codification B. work down the levels of the hierarchy to identify a similar transaction C. draft a memo D. change or refine

    asked by madam on December 11, 2016
  35. Law

    pleaese check my answer thanks :) Mary a medical assistant testifies in the malpractice case the th defendant, Dr Bob admitted he comited malpractice on Miss Sue This testimony likely would be excluded on what gounds. 1. Hearsay 2. Physican -patient

    asked by Anonymous on November 15, 2007
  36. social studies

    has there been any relgious issues in ghana These two sites will help you answer that question. http://www.state.gov/g/drl/rls/irf/2005/51475.htm http://news.adventist.org/data/2006/04/1147400645/index.html.en

    asked by ciara on May 21, 2007
  37. *math (2)

    The demand function for a certain brand of CD is given by p = −0.01x^2 − 0.2x + 10 where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. Determine the consumers' surplus if the market

    asked by Vanessa on April 23, 2014
  38. law and ethics in allied health

    a formulary is a list of? a.procedurals steps to resolve ethical conflicts in the medical office b.approved drugs for which the insurance company pays c.proper behaviors and manners for a certain community d.employes covered by an employers health

    asked by susue on November 10, 2013
  39. Math

    When Maria Acosta bought a car 2.5 years ago, she borrowed $10,000 for 48 months at 7.8% compounded monthly. Her monthly payments are $243.19, but she'd like to pay off the loan early. How much will she owe just after her payment at the 2.5 year mark?

    asked by Lindsey on October 4, 2017
  40. World History

    I have to write an essay on Ancient Civilizations. I need help with how to organize it. The teacher gave us the requirement of 5 paragraphs but she didnt tell us how to organize it. So my questions are, how many sentences are in each paragraph, how will i

    asked by Belle on May 16, 2019
  41. College English Check

    I was helping someone do a run on maze assignment and I just want these questions checked. The instructions said Complete the maze by following the correct sentences. These ones are the one's that I think weren't run on sentences. I enjoy fishing, however,

    asked by Ariel on June 22, 2010
  42. Physics

    A rubber ball (mass 0.30 kg) is dropped from a height of 2.0 m onto the floor. Just after bouncing from the floor, the ball has a speed of 3.9 m/s. (a) What is the magnitude and direction of the impulse imparted by the floor to the ball? MAGNITUDE: 3.05 kg

    asked by Audrey on November 7, 2012
  43. science

    Which type of muscle is resposible for moving fluids through the urinary system Since this is not my area of expertise, I searched Google under the key words "urinary system muscle" to get these possible sources:

    asked by suzie on May 19, 2007
  44. Government

    Please check my answer~ What is the key difference between a federal government and a confederate government? A.In a federal government, local governments have the most power. In a confederate government, a central government has the most power. B.In a

    asked by Mara on September 8, 2016
  45. English

    Please help me find my errors The Lottery takes place on a beautiful summer day in a small town. Although the location of the town is never given, it appears to be in a rural community. The story begins as a regular summer day, but has a surprising ending.

    asked by La'Charlis on October 19, 2011
  46. AP English

    Plato, Symposium ’He who has been instructed thus far in the things of love, and who has learned to see the beautiful in due order and succession, when he comes toward the end will suddenly perceive a nature of wondrous beauty (and this, Socrates, is the

    asked by Sean on May 22, 2018
  47. Partial Differential Equations

    At the He-Ne laser wavelength (L= 632.8 nm) the refractive indices of crystal quartz are n o = 1.54264 and n e = 1.55171 calculated from its Sellmeier equation. The laser is incident from the air onto the surface of crystal quartz at an angle of incidence

    asked by Joy on November 12, 2013
  48. Physics (Please Help)

    At the He-Ne laser wavelength (L= 632.8 nm) the refractive indices of crystal quartz are n o = 1.54264 and n e = 1.55171 calculated from its Sellmeier equation. The laser is incident from the air onto the surface of crystal quartz at an angle of incidence

    asked by Joy on November 13, 2013
  49. Algebra 2

    1.)Find inverse function of the function f(x)=(x+3)+9 2.)Find the inverse of the function r(x)=3x-6/5x+3 thanks

    asked by MV on December 3, 2011
  50. English

    I need to find a good site containing colloquial expressions used in everyday conversations (example, at the phone, at meals etc). I'd also like you to check these sentences, please. 1) Can you use the word “class party” where(to which?) you invite all

    asked by Henry1 on May 7, 2011
  51. AP Biology

    After an enzyme is mixed with its substrate, the amount of product formed is determined at 10-sec intervals for 1 min. Data: 0 secs. = 0.0 product formed (mg) 10 secs = .25 product formed (mg) 20 secs = .50 product formed (mg) 30 secs = .70 product formed

    asked by Mon on October 7, 2007
  52. Math

    My younger sister needs help with this problem: You have an 8 inch stack of dimes, each dimes is a half inch, how many dimes are there? I know the answer is 17, but I need to help her show her work

    asked by Palmer on November 30, 2016
  53. Physics

    How far will a humanoid robot travel in 3.0 s, accelerating at 1.0cm/s^2(forward) if its initial velocity is 5.0cm/s(forward) answer is 20cm (forward)

    asked by alex on July 3, 2013
  54. help! due tommorrow

    an assortment of coins contains 20 pennies, 2 nickels and 6 dimes what percentage of the coins are nickels? ( in the book the answer says 7% nickels) i want to know how to work out the problem

    asked by bbb444 on September 13, 2011
  55. Biology

    What is the difference between carbon-13 and carbon-14? A. the number of electrons B. the number of neutrons C. the number of nuclei Please help me and explain the answer and how you got it. I'm really struggling in this class.

    asked by Erica on September 26, 2018
  56. ap chemistry

    What is the activation energy Ea for this reaction? Answer in units of kJ The deltaH is 160 kJ X is at 160 (beginning of reaction) Y is at 300 (end of reaction)

    asked by Gabriella on November 16, 2013
  57. Chemistry

    What is the nuclear charge of an atom with a mass of 23 and an atomic number of 11? (1) 11+ (2) 12+ (3) 23+ (4) 34+ How do you figure this out? Would the answer be (1) 11+ since the atomic number is 11 and atomic #=protons which are positive??

    asked by Anonymous on June 14, 2009
  58. Physics

    Gravity on the surface of the moon is only 1 as strong as gravity on the Earth. 6 What is the weight of a 30 kg object on the Earth? The acceleration of gravity is 10 m/s2 . Answer in units of N.

    asked by Dede on November 4, 2010
  59. English

    Minimum is best described as A. great number C.equal number The other answer choices are cut off but A and C don't mean minimum right? Because minimum is the smallest possible amount

    asked by Jerald on January 15, 2013
  60. math

    what is the volume of a rectangular prism which the bottom side is 23 inch and one of the side is 4 and the other side 7. my answer is 644. A more or less example 23 x 7 x 4= 644 4__________________ 7__________________ 23

    asked by siulani perez on June 22, 2015
  61. math

    one thousand three hundred twenty feet are what part of a mile. Since there are 5,280 feet in a mile the answer will be 1/4 of a mile. how would you set this up in a fraction?

    asked by mona on July 13, 2010
  62. math

    A type of bacteria doubles in number every 12 hours. After 2 days, there are 48 bacteria. How many bacteria were there at the beginning of the first day. I know the answer is 3, but want to know how it arrived at the number "3"

    asked by Taylor on November 13, 2013
  63. Math

    Use the expression 12*12 to answer the question below A. Write the expression using exponential notation B. What is the base? C. What is the exponent? D. WRite the expression in expanded form. C?

    asked by §eth on September 4, 2012
  64. math

    Jay has 6,200 beads. He is making bracelets with 9 beads each. How many bracelets can he make? How many beads will be left. I know the answer to the first question, but i don't know the second.

    asked by sky on March 5, 2015
  65. Math Help

    Hi! I need help with these two questions. Thanks! 1.) Look for the first four terms for the following sequence below. an=n(n^2-6) 2.) For this question, remember that your answer has to begin with the second term of the following sequence. Look for the

    asked by Tori on April 29, 2015
  66. Math

    a soup kitchen prepared 2 gallons of soup. how many people can be fed if each serving of soup is 3/4 of a cup? I know the answer is 42 people but I want to known the formula

    asked by Evelyn on September 11, 2013
  67. Math

    Write the slope intercept form fo an equation of the line that passes through the given point and has the given slope 1. Point (1,1) Slope 1/4 Formula y-y1=m(x-x1) Answer : y=1/4x+0

    asked by M on October 30, 2014
  68. algebra

    Rita's tuition bill for last semester was $4360 If she paid $6052 in tuition this semester what was the percentage increase on her tuition Please help me as I am not sure of my answer which is 0.38%

    asked by cassandra on October 24, 2013
  69. Please help

    A rectangular picture frame has a perimeter of 58 inches. The height of the frame is 18 inches. What is the width of the frame? Please help show work and help answer thanks

    asked by Will on September 25, 2015
  70. math

    How many people were at a party if There were 105 handshakes at a party and if each person at the party shook hands with exactly once with every other person. The answer is 15. How do I write the problem?

    asked by Madi on October 25, 2010
  71. algebra1

    friday's temperature was 20 degrees warmer than monday's temperature t. write an expression for friday's temperature.... my answer is 20dregees + T is that correct?

    asked by alanaR. on August 26, 2010
  72. Adult Development and life Assessment

    Which of the following is not a secondary sex characteristic..... 1. !@#$%^ 2. pubic hair 3. adams apple 4. facial hair My answer is facial hair. Is that correct

    asked by Regina on November 24, 2012
  73. Algebra

    My calculator is broken. The "+" key works correctly,but whenever I try to compute a-b, the calculator performs b-a instead. What answer does mny calculator compute for the expression ((7-10)+3)-5? Thank you!

    asked by Trish Goal on November 2, 2014
  74. maths

    Can you tell me how you arrive at the answer to this question: if you multiply meby2, I become a number greater than 20and less than 40. If you multiply me by 6 I end in 8. If you multiply me by4,I end in 2.

    asked by Graham on May 2, 2011
  75. Calc.

    Evaluate the definite integral. S b= sqrt(Pi) a= 0 xcos(x^2)dx I'm not sure if this is right? u= x^2 du= 2xdx du/2= xdx S (1/2)cos(u) S (1/2)*sin(x^2) [0.5 * sin(sqrt(Pi))^2] - [0.5 * sin(0)^2] 0 - 0 = 0, so zero is the answer?

    asked by CMM on January 27, 2011
  76. correction of math

    can someone correct this for me please. Directions: Solve the system by substitution. x + y = 12 y = 2x this is what i did: in the first equation i substituted y for what i have in the second equation so now it looks like this: x +2x = 12 3x = 12 x = 4 now

    asked by jasmine20 on February 8, 2007
  77. Math

    How do you convert a number to whatever base it indicates? For example: convert 252 base six to base five. I have tried posting for my teacher to help me, but he doesn't seem to get what I am asking. Can someone please explain the process and not just the

    asked by Heather on June 30, 2010
  78. Math

    You have $60.00 in your wallet and want to buy some new CDs. If the CDs are $11.00 each, What number of CDs, x, can you buy? Write and solve an inequality. Then explain you answer. Please help me I have no Idea :/

    asked by help me please on November 29, 2016
  79. Math Help

    A right triangle has a leg B of length 7 and a hypotenuse of length 11. What is the length of the other leg A? Round to the nearest tenth, if necessary. A. 2.0 B. 8.5 C. 13.0 D. 9.6 Please help, I was gone for this lesson, just need someone to explain how

    asked by Matt on March 16, 2015
  80. 5th grade Math

    Clue 1: i am greater than 100,000, but less than 120,000. Clue 2: I am divisible by 3. Clue 3: The sum of my digits is 6. Please expalin answer. Thank you.

    asked by Alexia on September 13, 2011
  81. Physics

    A certain moving electron has a kinetic energy of 1.01 × 10−19 J. Calculate the speed necessary for the electron to have this energy. The mass of an electron is 9.109 × 10−31 kg. Answer in units of m/s.

    asked by lucky on April 3, 2011
  82. 6th Grade Math

    Estimate each sum or difference by rounding to the greatest place value. 10,982+4,821= should the answer be... 11,000+5,000=16,000 or 10,000+5,000=15,000

    asked by Claire on August 22, 2011
  83. Algebra

    I'm asked to solve the following system using elimination and say how many solutions there are: 4x - 7y = 15 -8x + 14y = -30 The answer says that there are infinitely many solutions, but I am getting 8x - 14y = 30 and -8x + 14y = -30. I think they both

    asked by Anonymous on January 5, 2014
  84. Math

    The dark chain is 5/12 yard long. The light one is 9/12 yard long. How long will they be if they are joined? Give the answer as a mixed number.

    asked by Amari on September 7, 2015
  85. MATHS

    d/f coes each consisting of 5 characters are to be generated. In each code the first two characters are A or B and the remaining three characters are any of the digits 0,1,2,...9 How many distinict codes be generated so? please tell me the answer

    asked by abu beye erga on June 6, 2016
  86. Maths plz help

    A test contain of 12 question out of which candidate are to answer 10.if the first 6 question are compulsory,in how many ways can each candidate select her question????? Plz show working

    asked by Franklin: on October 20, 2015
  87. algebra

    Write an equation of the line containing the given point and parallel to the given line. Express your answer in the form Y= mx+b (6,8); x+6y=5 The equation of the line is Y= I do not how work this problem help me, please

    asked by Johnnie on March 17, 2009
  88. Math

    Stephen was taking photographs of 71 different locations. At each location Stephen too 24 different pictures. How many pictures did Stephen take total? Is this answer correct 71 X 24 = 1704?

    asked by Jim on January 21, 2015
  89. AP Chemistry

    A given weak acid HZ has a Ka=1.7×10−6. What is the H3O+ concentration of a solution of HZ that has a concentration of 0.78 mol/L? What is the pH of this solution of HZ? What is the percent ionization of HZ in this solution? Answer in units of %

    asked by Gabriella on January 24, 2014
  90. combinations help

    a menu has a list of seven appetizers. your party will choose three. which of the following represents the number of possible choices? 7/3!, 7c3,or 7!-3!. 7 appetizers, choose 3. Clearly the answer is 7 choose 3.

    asked by dillon on April 11, 2007
  91. Math

    The difference between compound interest and simple interest on a certain principal for two years at 20% rate of interest is Rs. 25. What is the Principal amount ? (Answer with theory)

    asked by Soumya on October 12, 2018
  92. Math

    A cotton reel has a diameter of 3cm. 91 metres of cotton goes around it. How many times does the cotton go around the reel? And give your answer to the nearest ten

    asked by Kevin on September 28, 2016
  93. PHYSICS!!

    A car's engine can accelerate a car from rest to 30 m/s in 6 s. if the car's mass is 1300 kg, what is the power of the engine? can someone give me the answer because i just want to verify it with my own? thank you!

    asked by Allison on July 13, 2011
  94. math

    If a teenager and a half can eat a pizza and a half in a day and a half, how many pizzas can twelve teenagers eat in three days? Is the answer 36?

    asked by Jas on May 15, 2008
  95. physics

    A 1236.9 kg car is pulling a 334.8 kg trailer. Together, the car and trailer have an acceleration of 2.73 m/s 2 . What is the net force on the car? Answer in units of N

    asked by Anonymous on February 5, 2013
  96. statistics

    the correlation between two random variables X and Y is p=-0.75.it is given that X=1,2or3 with equal probability of 1/3 and Y=-1,-2or-3 with equal probability of 1/3.the covariance is equal to?i need help.i have been struggling to get the answer>

    asked by Joel on February 11, 2011
  97. physics

    If an hour hand is .01667 rev/s, a minute hand is 2.78e-4 rev/s, what is the second hand rotation speed? I've tried everything and can't get a correct answer. Thank you

    asked by Anna on July 1, 2016
  98. Chemistry 2 Ap

    From the mass of CaCo3, caluculate the moles of CaCo3 percipitation. Given- Mass of CaCo3 is 1.838 The answer i got at the end if 18.45 If it"s wrong will you please explain to me what to do.

    asked by jecce. on September 10, 2008
  99. Math - Solving for Trig Equations

    For the following equation, why cannot I not solve it? I keep getting an error. -- 2cosx - 3 = 0 -- I first isolated for "x" 2cosx-3 = 0 (2cosx/2) = (3/2) x = cos^-1(3/2) x = error? why? -- My textbook answer: 30 and 330 degrees --

    asked by Anonymous on November 22, 2007
  100. math

    A rectangle has a length of 8 and a width of 3, two squares with sides equal to the width of the rectangle are placed in the rectangle. What is the area of each square? a. 9 b. 16 c. 20 e. 25 f. 49 please answer and explain

    asked by Thomas on January 17, 2014

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