Questions Asked on
January 28, 2010

  1. phys

    1) Pf(x)= f(-x), p operator Find the eigenvalues and eigenfunction of p 2)Show [f(xop), d/dx] = - df/dx

    asked by Bun
  2. Word Problem

    The function H described by H(x)= 2.75x + 71.48 can be used to predict theheight in centimeters, of a woman whose humerus(the bone from the elbow to the shoulder) is x cm long. Predict the height of a woman whose humerus is 35 cm long.

    asked by Chloe
  3. economics

    Construct a production possibilities curve, be sure to properly label the axes.

    asked by m.e
  4. algebra

    Trains A & B are traveling in the same direction on a parallel tracks. Train A is traveling at 60 mph and train B is traveling at 80 mph. Train A passes a station at 5:15 PM. If train B passes the same station at 5:30 PM, at what time will train B catch up

    asked by John
  5. chemistry

    whats the difference between abbreviated eleectron configurations and complete eleectron configurations? if you can, please give an example, because i don't really get it.

    asked by Anonymous
  6. physics

    Three forces are applied to an object. Force 1 has a magnitude of 22.0 newtons (22.0 N) and is directed 30.0° to the left of the +y axis. Force 2 has a magnitude of 15.0 N and points along the +x axis. What must be the magnitude and direction (specified

    asked by emilee
  7. psychology

    intelligence vs wisdom

    asked by Anonymous
  8. Calculus

    A car drives down a road in such a way that its velocity (in m/s) at time t (seconds) is v(t)=3(t^(1/2))+4. Find the car's average velocity (in m/s) between t=4 and t=6.

    asked by <3
  9. physics

    Find the direction of the vector represented by the following pair of components: Ax= -3.15 m, Ay= 6.85 m. Find theta measured from the +x direction I don't know where to begin on this, could anyone guide me or give me steps?

    asked by drew
  10. chemistry

    A stock solution was prepared by dissolving exactly 0.4000 g of pure ASA (180.16 g/mol) in 10.00 mL of NaOH and heating the solution to a gentle boil. After cooling to room temperature, the solution was poured into a 250-mL volumetric flask and diluted to

    asked by Tasha
  11. Algebra

    i need help with graphing inequalities ex: y < 4 + x

    asked by Rachel
  12. Calculus

    R is the region in the plane bounded below by the curve y=x^2 and above by the line y=1. (a) Set up and evaluate an integral that gives the area of R. (b) A solid has base R and the cross-sections of the solid perpendicular to the y-axis are squares. Find

    asked by Jake
  13. CRT 205

    Good morning Ms. Sue: Can you help me identify what type of fallacies these are? I'm having some difficulties. Thank you kihdly. 5. Letter to the editor: “I strongly object to the proposed sale of alcoholic beverages at County Golf Course. The idea of

    asked by Lyric Cannon
  14. MAT/116 Algebra

    Find the slope and y-intercept. f(x)= -7x-3 the slope is = The y-intercept is (0, )

    asked by Julianna
  15. math

    The percentage of working mothers y can be modeled by the equation y=0.0102x + 0.644 where x is the number of years since 1990. In what year will 90% of mothers be in the labor force?

    asked by Bob
  16. English

    Can you check the following two paragraphs please? Thank you in advance 1) Last year, on Christmas Day, my relatives came to my home (house) for lunch. At the end of the lunch my mum stood up to go the kitchen to get the dessert. She was talking and she

    asked by Franco
  17. Spanish

    Don't understand differences between lo, la, le

    asked by Edwin
  18. calculus II university

    prove the following integrals: a)sin3xcos7xdx = -1/20cos(10x)+1/8cos(4x) b)sin8xcos3xdx = -1/22cos(11x)-1/10cos(5x)

    asked by maria
  19. sosial

    education women and country development are closely related

    asked by santosh acharya
  20. social study

    colonial america

    asked by josh beety
  21. Calculus

    Match each polar equation below to the best description. Each answer should be C,F,I,L,M,O,or T. DESCRIPTIONS C. Cardioid, F. Rose with four petals, I. Inwardly spiraling spiral, L. Lemacon, M. Lemniscate, O. Outwardly spiraling spiral, T. Rose with three

    asked by Salman
  22. Calculus

    Find the length of the entire perimeter of the region inside r = 16sin(theta) but outside r = 4.

    asked by Salman
  23. cjs220

    Write a minimum 450 word response addressing the following points: o Compare and contrast two theories on the causation of crime. o Using the crime of homicide – compare the difference in crime rates (per 100,000 people) between your current city and New

    asked by ken
  24. SOCIAL STUDIES

    THIS IS ABOUT EXPLORERS. WHAT IS A JOURNEY MADE FOR A SPECIAL REASON?

    asked by MATTHEW
  25. physic

    How long (in ns) does it take light to travel 1.00 m in vacuum? What distance does light travel in water during the time that it travels 1.00 m in vacuum?

    asked by mary
  26. English

    Could you check these two paragraphs for me, please? Thank you 1) Many years ago, when my uncle was only six years old, while he was playing on the balcony, which was on the second floor, one of his toys fell down and crashed on the ground. He wanted it

    asked by Franco
  27. math

    Sal borrowed $2,000 for six months at 11.5% simple interest. What was the total amount he had to repay?

    asked by gabe
  28. physic

    A laser beam in air is incident on a liquid at an angle of 40.0^\circ with respect to the normal. The laser beam's angle in the liquid is 25.0^\circ.What is the liquid's index of refraction?

    asked by elina
  29. PHSICS

    A laser beam in air is incident on a liquid at an angle of 40.0^\circ with respect to the normal. The laser beam's angle in the liquid is 25.0^\circ.What is the liquid's index of refraction? PLEASE HELP!!!

    asked by elina
  30. english

    what was shakespeares best play?

    asked by kristen
  31. calculus

    When using the substitution method to solve a nonlinear system of equations, you should first see if you can _____ one variable in one of the equations in the system.

    asked by heaven
  32. consumer math

    Megan bought a car for $12,500. She made a down payment of $3,500 and financed the rest. If she made 48 payments of $240 each, how much interest did she pay?

    asked by puppy01
  33. Finance Basic Interest

    The effective monthly equivalent of 4% compounded semi-annually is ___. 0.04/12 = 0.00333 = 0.333% Is this correct?

    asked by Anonymous
  34. biology

    All living things reproduce using ________.

    asked by tiara
  35. sew

    what does the term disposing of fullness means

    asked by Anonymous
  36. English

    Thank you very much for the help. Can you check these two other paragraphs, please? 1) Once, last year, I was (too?) late for school and I had to run to catch the bus. But the day before it had snowed a lot and that morning the road was icy. (While I was

    asked by Franco
  37. 8th math

    How many ways can seven basketball players of different heights line up in a single row so no player is standing between two players taller then herself?

    asked by Robin
  38. algebra

    Solve the following system of equations x+4y=3(1) x=6-4y (2)

    asked by Terri
  39. math

    Carlos Martin received a statement from his bank showing a balance of $56.75 as of March 15th. His checkbook shows a balance of $87.37 as of March 20. The bank returned all the cancelled checks but two. One check was for $5.00 and the other was for $13.25.

    asked by vance
  40. Maths

    Please could I have some guidance and advice on the following question? A multiple choice question has 4 options, A,B,C and D. The numbers of students choosing the options are in the ratio 3:1:2:14. I need to calculate the number of students choosing each

    asked by David
  41. College Algebra

    solve using the elimination method x-7y=46 2x-7y=43

    asked by Ashley
  42. College Algebra

    Translate the problem into a pair of linear equations in two variables. Solve the equations using either elimination or substitution. State your answer for both variables. The perimeter of a rectangle is 72m. If the width were doubled and the length were

    asked by Ashley
  43. Biology

    14. Surface area is an important factor in limiting growth cell because a. the cell may become too large to remove enough wastes. b. materials can't enter the cell if it's too large c. the cell can burst if the membrane becomes too large d. waste products

    asked by mysterychicken
  44. Word Play

    What are some good one word names. Using Interest and Entrepreneur

    asked by Bryan
  45. Earth Science

    Which of the following help create volcanoes? plate tectonics landslides cracks in Earth's crust built up magma

    asked by help
  46. calculus

    prove the following integrals: a)sin3xcos7xdx = -1/20cos(10x)+1/8cos(4x) i know i have asked this question before but i am very confused bobpursley, can you please show me the steps of proves. thanks in advanced

    asked by maria
  47. social studies

    What are the main tenets of Confucianism?

    asked by Sharon
  48. College Algebra

    Translate the problem into a pair of linear equations in two variables. Solve the equations using either elimination or substitution. State your answer for both variables. An orchard operator must dilute 11 quarts of a 60% insecticide solution by adding

    asked by Ashley
  49. social studies

    What is the treaty port system in East Asia?

    asked by Sharon
  50. International Business

    Do you think Proposition 200 might affect the U.S. economy if it is widely adopted throughout the country? Why or why not?

    asked by Tee
  51. health

    What are the interrelations of blood clotting, immune response, allergic reaction, and hormone release. I have been trying to figure this out for 3 days now. Please help! Thank you.

    asked by Peggy
  52. biology

    imagine if you are a water molecule outside of an animal cell of a human.the person just drunk the glass.write a persuasive letter to the cell membrane convincing it to let you inside the cell.

    asked by dashia
  53. american literature

    what are three features of a lyric poem ? explain how "Song Concerning a Dream of the Thunderbirds uses these features. Imagination, Emotion, and Melody how are they used

    asked by laura
  54. Math!

    Wasim is paid on a graduated scale of 5% on the first $10,000 of sales in a month, 7% on the next $25,000, and 9% on all additional sales. a)What will he be paid in a month in which sales are $62,760? (round the answer to the nearest cent.) b)What fixed

    asked by Thara!
  55. Bus/210

    • Write a 200- to 300-word description of a business scenario, either real or fictional, that depicts each of the following forms of business organization: • o Joint-stock company o Limited liability company o Partnership o Sole proprietorship

    asked by Connie
  56. physics

    A runner traveling with an initial velocity of 3.0 m/s accelerates at a constant rate of 1.7 m/s2 for a time of 3 seconds. What distance does the runner cover during this process?

    asked by Tim
  57. geography

    6 ways the geography helped the civilization grow

    asked by jamie
  58. math

    When is the quotient of two monomials a monomial?

    asked by Emmy
  59. LAL

    are these sentences right? comparative/superlative Adjectives 1 It spurts a stream of hot steaming water HIGHER than 100ft into the air 2 This MOST splendid geyser erupts from every half hour to every 2 hours. 3 For many visitors of yellowstone , seeing

    asked by Sara
  60. Physics

    A parallel-plate capacitor made of circular plates of radius 55 cm separated by 0.25 cm is charged to a potential difference of 1000 Volts by a battery. Then a sheet of tantalum pentoxide is pushed between the plates, completely filling the gap between

    asked by Paul
  61. social science

    o Provide a one-sentence description of typical precipitation and temperature for summer and winter

    asked by kari
  62. math

    what is the value of y- coordinate of the solution to the system of equation x + 2y = 9 and x- y= 5

    asked by anthony
  63. geometry

    in the accompanying diagram of circle O,chords AB and CD intersect at E. If AE=3,EB=4,CE=x, and ED=x-4,what is the value

    asked by cesar,eduard
  64. MATH!

    If the Canadian dollar is worth 49% less than the U.S. dollar, then the US dollar is worth what percent more than the Canadian dollar? (Round the answer to the nearest hundredth of a percent).

    asked by Thara!
  65. arithmetic

    ROUND 4.46 TO THE NEAREST TENS PLACE

    asked by TEBOW
  66. math

    In how many ways can 7 people be lined up to see a movie if Ben must be at the start of the line? is the answer 720?

    asked by sss
  67. health

    the ability to gather, understand, and use health information to improve your health

    asked by chels
  68. math

    ok it says to solve each inequality and graph the solutions. T-3>5 and theres a number line from 10 to -10 plz help

    asked by kayleigh
  69. College Algebra

    Determine the x- and y-intercepts of the given equation. Show your work y = x + 4

    asked by Ashley
  70. College Algebra

    Determine the x- and y-intercepts (if any) of the given equation. Show your work. y = - 4x + 6

    asked by Ashley
  71. CP Algebra

    3x^2-6x-24 __________ 3x^2+2x-8 this is just simplifying multiplying and dividing i got this far: (3x 2)(x 12) ___________ (3x-2)(x+4)

    asked by Amber
  72. CP Algebra

    15y^2-30y-45 ____________ 5y^2+10y-15 this is simplifying multiplying and dividing i got this far: 15(y^2-2y-3) 15(y+1)(y-3) ___________ = ___________ 5(y^2+2y-3) 5(y-1)(y+3) then i simplified the 15 to 3 and the 5 to 1

    asked by Amber
  73. algebra1

    solve word problem zelma is eighteen years older than her son she was three times as old as he was one year ago how old are they now

    asked by sadie
  74. spanish

    answer the questions in spanish: 1.¿Qué enciendes cuando tienes calor? 2.¿Qué apagas cuando tienes frío? 3.¿Qué usas en tu cama cuando hace frío? 4.¿Dónde están las cosas muy frías en tu cocina? 5.¿Dónde está tu ropa? 6.¿Qué hay en las

    asked by jan
  75. 6th grade

    how to do unit rates

    asked by unnone
  76. geometry

    List the following elements in proper set notation. Place the elements in numerical order within the set. * 0 * 1 * 123 * 4 * 34

    asked by Amy S
  77. algrebra

    P=S1 + S2 +S3 for S2

    asked by bethany
  78. math

    a movie theater charges $7 for an adult's ticket and $4 for a child's ticket. on a recent night the sale of child's tickets was three times the sale of adult's tickets. if the total anount collected for ticket sales was not more than $2,000, what is the

    asked by daniel
  79. English Gr.5

    Draw one line under each action verb and 2 lines under each linking verb. Sentences with linking verbs, circle the word and the predicate that renames or describes the subject. Write noun pronoun for adjectives in the blank to describe the word. In

    asked by English helper
  80. Physics

    If you are given many closed sacks filled with different amounts of identical marbles, how could you determine the weight of a single marble without opening the sacks? (Assume the weight of the sack material can be ignored.) The only thing I could think of

    asked by Hannah
  81. math

    subtract the quotient of 18 and 2 from the sum of 22 and 9.

    asked by yolanda
  82. physics

    A man can throw a ball a maximum horizontal distance of 149 m. The acceleration of gravity is 9.8 m/s2 . How far can he throw the same ball verti- cally upward with the same initial speed? Answer in units of m.

    asked by sally
  83. Biology

    3. Which of the follwoing statements about sexual and asexual reproduction is FALSE? a. genetic diversity occurs in sexual reproduction b. asexually reproducing organisms can repair their own DNA c. there are no special reproductive celss in asexual

    asked by mysterychicken
  84. Algebra

    Solve y=1/4x-1 if the domian is (-4, -2, 0, 2, 4) Please help me answer thank you for in advanced!

    asked by brooke
  85. math

    2xsquare- 8x - 42 over 6x square divided by x square - 9 over x square - 3 x

    asked by daniel
  86. english

    The fire truck and the ambulance sped to the site of the train wreck. is it a simple sentence,compound sentence, run-on sentence or sentance fragment

    asked by brandon
  87. Math

    The land area of present-day Texas is about 7/20 the present-day land area. What percent of the land area of Mexico is Texas.

    asked by ASHLEY
  88. Physics (Please help!!!)

    If you are given many closed sacks filled with different amounts of identical marbles, how could you determine the weight of a single marble without opening the sacks? (Assume the weight of the sack material can be ignored.) The only thing I could think of

    asked by Hannah
  89. 5th Grade Science

    Okay here is my question: What is the best way to model how heavy rains and floods can change rocky land? Thank you

    asked by Please Help
  90. ENGLISH!

    In what part of speech is "concert" being used as? "Our share of the responsibility for what we do individually or in concert with others varies with social and political structures..."

    asked by Happy Face
  91. Chem

    How do you determine if a bond is non-polar covalent or polar covalent or ionic?

    asked by Sam
  92. 6th Grade math

    The Odgen School marching band has 91 musicians. If there are 7 student musicians in each row, how many rows are there?

    asked by David
  93. math

    i have three packages

    asked by Anonymous
  94. math

    how to solve a graph plot

    asked by sophia
  95. Math

    Which pair of numbers is equivalent to 47.5% A. 457/100, 0.475 B. 475/100, 475 C. 475/1000, 4.75 D. 475/1000, 0.475

    asked by ASHLEY
  96. Economic

    The word equity means A.equality B.fairness C.justice D.profitability I think the answer is B

    asked by Candace
  97. algebra

    Area of a painting. A rectangular painting with a width of x centimeters has an area of x2  50x square centimeters. Find a binomial that represents the length. See the accompanying figure.

    asked by kool-v
  98. Math

    How do you do this problem. Thanks for your help. 4(2m+3)=-3(m-1)+7

    asked by Julie
  99. economic

    In a capitalist system, most property is A.private property B.owned by the government C.regulated by the government D.owned by banks I think the answer is A

    asked by Candace
  100. Math

    If the sum of two angles of a triangular garden in West Lafayette is 132 degrees. What is the measure of the third angle in degrees?

    asked by Cheyenne
  101. Math

    The directions for this problem is to simplify the equation using like terms. I'm confused. 3(2t-9)-2(5t-3)

    asked by Matt
  102. science

    what does it mean for a system to be dynamic?

    asked by Anonymous
  103. statistics

    Show that for all three distributions (Binomial, Poisson and Geometric) the probability of finding at least one ace is around 55%

    asked by Charles
  104. math

    what is the natural logarithm of (4x-1)=36

    asked by sherry
  105. Math

    A motorist travels 108km in 2hrs 15mins. if she travels at a steady speed, find how far she goes in 1 hour. PLEASE SHOW ALL WORKING

    asked by Ashley-Ann
  106. math

    say i played a game against someone. scores: 189 208 255 234 214 176 197 254 203 199 219 216 193 211 me other person who won more games. please show me how to solive it please.

    asked by Anonymous
  107. math

    find all possible values of x such that, when the five numbers x, 14, 11, 6, 17 are arranged in order, the mean is equal to the median

    asked by Mark
  108. math

    Express the function f(x) = −[ 1/3]x^2 + 2x + 3 in the form f(x) = a(x + p)^2 + q by completing the square: f(x) = −[ 1/3]x^2 + 2x + 3

    asked by jh
  109. math

    find all possible values of x such that, when the five numbers x, 14, 11, 6, 17 are arranged in order, the mean is equal to the median

    asked by Mark
  110. math

    Express the function f(x) = −[ 1/3]x^2 + 2x + 3 in the form f(x) = a(x + p)^2 + q by completing the square: f(x) = −[ 1/3]x^2 + 2x + 3

    asked by jh
  111. Science

    How can u predict if a bond will be ionic, covalent or polar covalent? i know that its the difference between electronegativities, but i cant seem to find the numbers it has to be between for each. I'm also getting confused because isnt covalent the same

    asked by Sam
  112. Algebra

    Jim's Brakes charges $25 for parts and $55 per hour to fix the brakes on a car. Myron's Auto charges $40 for parts and $30 per hour to do the same job. What length of job in hours would have the same cost on both shops?

    asked by brooke
  113. English 101

    Does this sentence contain a misplaced or dangling modifier? The storm did not prevent the undaunted crew from setting sail as planned.

    asked by Felicia
  114. Algebra

    can you please help me with a math problem? -3xy^2 + 3x2y -2y^3 = xy + 2

    asked by lakecia
  115. SF Schools

    How do I evaluate: d2 (squared)-3ab d= -4, a= .5, b= -2

    asked by Catherine
  116. math

    In how many ways can 7 people be lined up to see a movie if Ben must be at the start of the line? is the answer 720?

    asked by sss
  117. 8th grade math

    Carlos and maria drove a total of 258 miles in 5 hours. Carlos drove the first part of the trip and averaged 53 miles per hr maria drove the remainder of the trip and averaged 51 miles per hr for how many hrs did maria drive

    asked by rodney
  118. earth science

    if you didn't know these cities were all cities of the United States, how could you tell from the temperature curves that they were all in the Northern Hemisphere?

    asked by susan
  119. Technology

    Short answer question: #22. Describe the three steps required to make steel. My answer: There are three steps required to make steel, which include: Iron smelting, Steelmaking, and Steel finishing. The first step, iron smelting, produces pig iron which is

    asked by y912f
  120. Technology

    Short answer question #23. Briefly explain the four stages of making an expendable mold casting. My answer: There are four stages in making an expendable mold casting. The first is making the pattern. In the second step, the pattern is surrounded with sand

    asked by y912f
  121. math

    what is e^2x=12

    asked by sherry
  122. science

    two common ways in which a glacier can cause ersion?

    asked by bob
  123. math

    amy sloved 3/5 of her math problems and had 24 left to do. how many problmes did she solve ?

    asked by help
  124. Personal Finance

    The Lees, a family of two adults and two dependent children under age 16, had a gross annual income of $68,000 for 2007. Determine their standard deductions, exemption, and child tax credit amounts, as well as their marginal and average tax rates assuming

    asked by Jeff
  125. Science

    Before 1937, all naturally occuring elements had been discovered, but no one had found any trace of element 43. Chemists were still able to predict the chemical properties of this element (now called technetium), which is widely used today for diagtnosing

    asked by LOVELY23
  126. Math

    Karl needs to complete 50 laps in the swimming pool to earn a prize. He has completed 24 laps. What percent of the laps required for the prize that karl completed?

    asked by Ashley
  127. math

    tim and jim shared 35$ in the ratio 4:3 .how much did tim get ?

    asked by help
  128. 7th grade math

    Scott deposits $1,000 in an account that earns 5% simple interest. What will the account be worth after two years?

    asked by Anonymous
  129. Chemistry

    Approximately how many grams of NaNo3 will dissolve in 100g of water at 20 degrees Celsius?

    asked by Lily
  130. 9th grade

    how do you start this problem x/x+2=4/5,x=-2

    asked by mike
  131. math

    what is 313 divided by 3

    asked by omo
  132. chemistry

    how do i name the ionic compound bythis formula (NH4)2Cr2O7

    asked by calli
  133. physics

    if you wished to warm 100 kg of water by 15 degrees celsius for your bath, how much heat would be required? (give your answer in calories and joules)

    asked by maria
  134. 8th grade algebra

    A train load of cars and trucks is en route to an automobile dealer for whom you work. Before they arrive, the dealer receives an invoice showing a total of 160 vehicles. Unfortunately, the part of the invoice showing how many of each kind of vehicles has

    asked by cuca
  135. environment

    How can experienced security professionals prepare themselves for challenges and opportunities they have never encountered before?

    asked by Anonymous
  136. algebra

    find the value of x so (x,-3) is collinear to (6,7) and (-2,-5). Show all work.

    asked by 16
  137. Algebra

    The ages of three brothers are consecutive even integers. Three times the age of the youngest brother exceeds the oldest brother’s age by 48 years. What is the age of the youngest brother?

    asked by Camile
  138. Math (again)

    how do I solve 4.1 divided into 68.3?

    asked by Ashley
  139. chemistry

    If 6.38 g of a polyethylene glycol is dissolved in 7550 ml of water at 300 oK, the solution has an osmotic pressure of 0.171 torr. Calculate the molar mass (g/mol) of the polyethylene glycol.

    asked by eng
  140. algebra

    need help with this problem can someone help me? "At the end of the week one, a stock had increased in value from $5.75 a share to $7.50 a share. Find the percent of increase at the end of week one to the nearest tenth of a percent. At the end of the week

    asked by Jessica
  141. Probability

    The local ice cream stand offers three flavors of soft-serve ice cream: vanilla, chocolate, and strawberry: two types of cone: sugar and wafer: and three toppings: sprinkles, nuts, and cookie crumbs. If Dawn does not order vanilla ice cream, how many

    asked by Camile
  142. spanish 2

    How do you say these sentences in spanish in past tense. The dog took the letters to the mailbox. The dog is driving to the mailbox. The dog is reading the letter.

    asked by kate
  143. math

    When a boy pulls his sled with a rope, the rope makes an angle of 70 with the horizontal. If a pull of 16 pounds on the rope is needed to move the sled, what is the horizontal component force?

    asked by chelsey
  144. cjs220

    Could someone please help me i been working on this all day its due today and im not no where near done contrast and compare two theories Choice Theory and Sociological theory

    asked by ken
  145. human resources

    As the company bookkeeper reviewing delinquent accounts receivable, you find that a relative of yours has not paid his account amounts of $550. You know that he has been experiencing financial difficulties, and so you set his account aside and do not

    asked by Shawne
  146. Biology

    3. Which of the follwoing statements about sexual and asexual reproduction is FALSE? a. genetic diversity occurs in sexual reproduction b. asexually reproducing organisms can repair their own DNA c. there are no special reproductive celss in asexual

    asked by mysterychicken
  147. chemistry

    A 4.14 m solution of the solute methylene chloride dissolved in the solvent ethanol is available. Calculate the mass ( kg ) of the solution that must be taken to obtain 1487 g of methylene chloride. CH2Cl2-1327 (kg/m^3) C2H5OH-789.3 (kg/m^3)

    asked by eng
  148. chemistry

    A 4.58 m solution of the solute methylene chloride dissolved in the solvent acetone is available. Calculate the mass ( kg ) of the solution that must be taken to obtain 0.8848 kg of methylene chloride. density: CH2Cl2-1.327 (g/mL) (CH3)2CO-0.7899 (g/mL)

    asked by bubble
  149. FIN 200 AXIA COLLEGE

    NEED HELP WITH FIN 20 WEEKS 5 THRU 9

    asked by JOYCE
  150. chemistry

    A 4.14 m solution of the solute methylene chloride dissolved in the solvent ethanol is available. Calculate the mass ( kg ) of the solution that must be taken to obtain 1487 g of methylene chloride density: CH2Cl2-1327(kg/m^3) C2H5OH-789.3(kg/m^3)

    asked by bubble
  151. algebra

    what is the value of the y-coordinate of the solution to the system of equations x-2y=1 and x+4y=7

    asked by shifa
  152. 6th grade science

    what is a boundary between two air masses called

    asked by sienna
  153. Math

    (I have two questions) 1. Solve for x without a calculator: log3(x^2)=2log3(4)-4log3(5) This is what I have so far: 2log3(x)=log3(4^2)-log3(5^4) 2log3(x)=log3(16/625) ...and now I'm stuck. 2. Simplify: 2log4(9)-2log3

    asked by Moe
  154. English

    What is the hellenic perspective?

    asked by need help
  155. English

    Can somebody help me with commans? where do they commas go in these sentences? Or do they need them? 1) I give you homework becuase you need to learn commas. 2)If you fill in the commas you will be happy with your grade. 3) I will be happy as I grade you

    asked by Jen
  156. english

    Could you tell me which irregular verb would be correct in the following sentences? The boys see, saw the fire trucks across the street. They did or do their homework everyday. I ran or run to get towels from the closet. I sing or sang a song everyday.

    asked by jen
  157. English

    I'm fishing for my word that I can use in my essay that would mean free with giving (almost to a fault), where one gives with little regard to where the money goes and what it would be used for.

    asked by Alison
  158. U.S HIstory

    list the similarities between New MExico and California and in the way Americans settled in the both places?

    asked by Tina
  159. physics

    Santa loses his footing and slides down a frictionless, snowy roof that is tilted at an angle of 30.0. If Santa slides 5.00 before reaching the edge, what is his speed as he leaves the roof?

    asked by k-Paul
  160. Physics

    A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 7.10 later. What was the rocket's acceleration?

    asked by Mark
  161. physics

    Four identical metallic objects carry the following charges: + 1.6, + 6.2, − 4.8, and . The objects are brought simultaneously into contact, so that each touches the others. Then they are separated, (a) What is the final charge on each object? (b) How

    asked by Sam
  162. Physics

    A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 7.10 seconds later.

    asked by Mark
  163. Physics

    Santa loses his footing and slides down a frictionless, snowy roof that is tilted at an angle of 30.0. If Santa slides 5.00m before reaching the edge, what is his speed as he leaves the roof?

    asked by k-Paul
  164. spanish

    what does "todo esta bonito" mean in english?

    asked by sherry
  165. algebra

    Jims Brakes charges $25 for parts and $55 per hour to fix the brakes on a car. Myrons Auto charges $40 for parts and $30 per hour to do the same job. What length of job in hours would have the same cost on both shapes?

    asked by brooke
  166. Algebra

    The sum of two mumbers is 21, and their difference is 7. What are the numbers?

    asked by brooke
  167. 6th grade

    what is cell theory

    asked by john
  168. pre-calculus

    If sin a = 3/5 when Pi/2

    asked by Kimmie
  169. Physics

    The frequency of the electromagnetic waves in a microwave oven is 2.2 GHz. A large piece of cake is placed inside this microwave oven without the rotating plate, and left to cook for a while. Once the cake is cut, the distance between adjacent uncooked

    asked by Hailey
  170. math

    if the perimter is 24 and each unit is 1 brick long. how many bricks will i need

    asked by jake
  171. math

    a sock drawer has 2 blue pair,4 white pair,4 black pair? what is the probability you will pick out a black pair ? i think is 2/10 that how i get my answer but not for sure that correct

    asked by makeeda
  172. algebra

    2x^2-8x-42 over 6x^2 divided by x^2-9 over x^2-3x

    asked by daniel
  173. Mathematicas

    To win $1 million, you must draw two cards whose sum is nine from a stack of cards numbered 1 through 10. After the first draw, you replace the card and shuffle the stack again for the second draw. What is the chance that your two cards will have a sum of

    asked by Ana
  174. trig

    Two sides of triangle CDE are 9 and 4, as shown. Write an equation in standard form for the line CD. Leave values as radicals. There is a picture of a triangle that passes through point (4,0) The answer is 65^1/2x + 4y = 4(65^1/2) But, I don't understand

    asked by Dale
  175. Chemistry

    how does the position of a metal in the periodic table determine whether the element exists in nature as an oxide, a carbonate, or a sulfide?

    asked by Anana
  176. English 101

    Which sentence is parallel and which is not parallel. 1. Einstein liked doing mathemathical research more than to supervise a large laboratory. 2.While wrapping the gifts, I noticed that murray, my pet terrier, kept trying to untie the bow.

    asked by Felicia
  177. math

    4 divided by 5.12

    asked by laura
  178. com

    Determine three main things you must do to convert the annotated bibliography to an APA-formatted reference page as part of the rough draft of your research paper.

    asked by shae
  179. phys

    show [f(xop), d/dx] = -df/dx please help, can sb gives a hint? I really appreciate.

    asked by Bun
  180. math

    a group of friends shared the expenses of an automobile trip,which cost $40.if there had been 3 more people in the group.each would have $3 less.how many people were there in the group and how much did each pay?

    asked by chris
  181. calculus

    integrate (2/3x^5)

    asked by Anonymous
  182. alg2/trig

    To the nearest minute, what is the approximate size of the smallest angle of a triangle whose sides are 4,5, and 8? How do I find the angle?

    asked by Judy
  183. math

    what are the subsets of S?

    asked by T
  184. math

    solve using set builder notation 5[3M-(M+4)]>-2(M-4) {m|m ____ ____}

    asked by Jen
  185. math

    Terri, Corey and Chris together made 20 baskets in a basketball game. Terry made 5 more than Corey. Chris made 3 times more baskets then Corey. How many baskets did they each have?

    asked by Susan