Questions Asked on
December 15, 2014

  1. Physical science

    What is the formula of magnesium sulfate and ammonia? My work:MgSO4 + 2NH4OH --> (NH4)2SO4 + Mg(OH)2 Correct/Balance the equation below. MgSO4 + NH4OH → (NH4)2SO4 + Mg(OH)2

    asked by DFD
  2. Biology

    The creation of sex cells occurs in meiosis. Explain what happens when a new organism is created and life begins. Answer: meiosis is a process of cell division that produces sex cells, or gametes. Gametes are reproductive cells such as the sperm and egg.

    asked by HELP!
  3. Biology

    If there are two sets of 21 chromosomes in a rats lung cell, how many total chromosomes are there in a cell that undergoes mitosis? Answer: 42

    asked by HELP! Review For TEST
  4. Physics AP

    So there are two blocks that are connected over a light frictionless pulley. Block A has a mass of 2 kg on a frictionless surface while block b has a mass of 1 kg that hangs freely. It asks for speed, change in speed, and tension. I know that tension can

    asked by Jelly
  5. Science Help!!!!

    How does using coal to generate electricity affect the enviroment? A. Using more coal reduces the amount of pollution from using oil. B. Using coal improves the quality of nearby water. C. Using coal, instead od wood from trees, helps improve the

    asked by callie
  6. Chemistry

    Last question I'm having trouble with. Predict the oxidation # for astatine. Why?

    asked by Hayley
  7. Calculus (math)

    The volume of the solid obtained by rotating the region enclosed by y=1/x4,y=0,x=1,x=6 about the line x=−2 can be computed using the method of cylindrical shells via an integral. it would be great if you can just even give me the function inside that I

    asked by Thank you in advance :)
  8. Calculus

    Use linear approximation to approximate f(0.8) given f(x)=2x^3-3x+1 I'm not sure how to do it without a point given.

    asked by Anonymous
  9. Science Help!!!!

    1. Which of the following types of pollution cannotbe attributed to car and truck emissions? A. Acid rain B. Sedimentation C. Ozone D. Photochemical smog 2. In which of the following places is it more difficult to determine if there is pollution? A.

    asked by callie
  10. chemistry

    For an atom of sulfur, which electron would require the least amount of energy to remove from the atom? A. 3s2 B. 1s1 C. 3p1 D. 3p4 I think the answer is c or d, preferring d. What would you go with?

    asked by Morgan
  11. Pre-Algebra

    A student is 5 ft tall and casts a shadow 10 ft long. A nearby tree casts a shadow 60 ft long. Find the height h of the tree.

    asked by troi
  12. maths

    The denominator of a fraction is 4 more than the numerator. If both the numerator and the denominator are increased by 1, the fraction becomes 4/5. What is the original fraction?

    asked by sowmya
  13. physics

    a jogger does 2.5 *10^5 of work during an exercise routine. her internal energy decreases by 6.8*x10^5. how much heat did she absorb or give off?

    asked by innocent
  14. Physics

    A ball is thrown upwards with an initial velocity of 16 m/s. What is the velocity of the ball 1.5 s later? After the ball leaves the hand of the thrower, what is the value of acceleration acting on the ball as it is rising upwards? 9.8x1.5 = 14.7.

    asked by Jim
  15. Science

    The speed of light is 3 x 10 to the 8th power meters per second. If the sun is 1.5 x 10 to the 11th power meters from earth, how many seconds does it take light to reach the earth?

    asked by MG
  16. 7th grade math

    Can you check these? 3. Simplify (56/8+3)*2-1 = (7+3)*2-1 = 10*2-1 = 20-1 = 19 9. A spool of lanyard is 21 yards long. If it is cut into pieces that are each 1.75 yards long, how many pieces of lanyard will there be? Ans:21/1.75 = 12 pieces 12. (3/5)x - 10

    asked by Alexis
  17. Programming

    Hi guys! I have a humanitarian turn of mind, and that's why just can't understand programming. On the other hand, I don't want to spoil my average performance. Thus, I have to use homework-help online services, like Homework-Desk. Do you know any other

    asked by Sally Sonderson
  18. math

    The area of square field is half hectare. Find the length of its diagonal in meter

    asked by Amrita
  19. Math

    13pi/12=________ degrees: Round to the nearest hundredth.

    asked by Anna
  20. english

    Type a short character sketch of a fictional Puritan named Justice Johnson based on what you have learned about the Puritans. Make certain that you describe how he dresses, how he lives, what he believes, how he spends his time--in short, describe him so

    asked by Brett
  21. American National Government

    Each state constitution provides for local entities, including all except (Points : 1) counties. port authorities. municipalities. special districts.

    asked by DSlaughter
  22. Algebra

    Kendall was playing t-ball and hit the ball off the tee, which is 3 feet off of the ground. If the equation h(t) = -16t2 + 20t + 3 represents the height of the ball at time t, what would the x-intercept represent in the context of this problem? Write your

    asked by Zyere
  23. Algebra

    Ethan kicked a ball from home plate during a kickball game. The height of the ball is represented by h(t) = -16t2 + 25t. What would the vertex of the function represent in the context of this problem? Write you answer using complete sentences.

    asked by Amare
  24. Algebra

    Joshni threw a ball and its height is represented by the function h(t) = -16t2 + 30t + 5. Explain how she can determine the maximum height the ball reached. Use complete sentences to receive full credit.

    asked by Zyere
  25. Science

    Creativity is always discouraged in scientific endeavors. True or False. I thinks its true.

    asked by Anonymous
  26. Math

    Simplify the expression. 3x + 4(x - 6) - 3(x - 7) A. 4x - 45 B. 4x - 3 C. 10x - 3 D. 10x + 45 Is it b?

    asked by Brit
  27. Math

    students planted 6 equal-size gardens, they divided each garden into 3 equal sections and planted herbs in 2 of the 3 sections, what fraction of the gardens did the students plant with herbs? Shouldn't it be 2/6?

    asked by Anonymous
  28. physics

    A skier starts from rest and slides down a 20° incline 100 meters long. if the coefficient of friction is 0.09, how much heat is dissipated into the environment as the skier descends?

    asked by Kaya Allen
  29. Physics

    Instructions: Read the following paragraph carefully. Then use what you know about momentum, work, and energy to answer the following questions. Be sure to show your work. You are a traffic accident investigator. You have arrived at the scene of an

    asked by Annet
  30. Chemistry

    Naturally occurring magnesium consists of Magnesium-24 (23.9850 amu; 78.99%), Magnesium-25 (24.9858 amu), and Magnesium-26 (25.9826 amu). Using the average atomic mass from the periodic table, calculate the closest percent abundance of Magnesuim-26. a)

    asked by Mackenzie
  31. Algebra 1

    What is an equation of the line with slope 6 and y intercept -4?

    asked by Steve
  32. algebra

    (2x+5y)0=?

    asked by mangesh
  33. language arts

    I'm in Jonny Tremain chapter 5 1. Which of the following is the most significant event in the plot following Jonny's accident? A. Johnny releases that Rab and his uncle are Whigs B. Rab teaches Jonny how to ride Goblin C Mrs. Lapham recruits Mr. Tweedie to

    asked by ben
  34. history

    1. Which state was added to the union as a result of the compromise of 1850 A. Maine B. Missouri C. Nebraska D. California*** 2. What issue was at stake when free and slave states reached the Missouri compromise A. Power*** B. Tariffs C. Abolition D.

    asked by HELP MEEEEE
  35. Physics

    Instructions: Read the following paragraph carefully. Then use what you know about momentum, work, and energy to answer the following questions. Be sure to show your work. You are a traffic accident investigator. You have arrived at the scene of an

    asked by Anonymous
  36. language arts

    Which of the following sentences from the novel johnny remain (chapter 5) provides evidence that Rab is having a positive effect on Johnny? A. he liked to make a handsome entrance. Even if he and Goblin had dawdled a bit on country roads, they both liked

    asked by ben
  37. astronomy

    If you’re trying to build a house north of an old pine forrest (∼50m tall trees). How far north must you be from the edge of the forrest in order to ensure that you see at least a bit of the Sun even during the winter solstice?

    asked by kathy
  38. Chemistry

    Outline the prepartion of 2-chlorobutane from an alcohol?

    asked by Aboi
  39. algebra

    15y-21=3(5y-7)

    asked by grace
  40. Chemistry

    A compound D, CH3CHCLCH2CH3 was boiled under reflux for some time with dilute NaOH solution.. Dilute nitric acid was then added to the mixture, followed by dilute silver nitrate solution. A Few drops of concentrated ammonia solution were then added. What

    asked by Aboi
  41. Chemistry

    What is product form when 2-bromobutane reacts with potassium cyanide in ethanol?

    asked by Aboi
  42. physics

    A full shopping cart requires a force of 88.0 Newtons to move across a horizontal floor at a constant velocity. If the cart has a mass of 32.1 kg, what is the coefficient of kinetic friction between the cart and the floor?

    asked by bruh
  43. History 2

    the public school system in georgia was the result of laws passed during A. World War 1 B. The Civil War C. Reconstruction **** D. Antebellum

    asked by HELP MEEEEE
  44. physics

    A dragster starts from rest and accelerates down a track. Each tire has a radius of 0.320 m and rolls without slipping. At a distance of 382 m, the angular speed of the wheels is 255 rad/s. Determine (a) the linear speed of the dragster and (b) the

    asked by megann
  45. uthm

    8) A man owns two building supply stores, one on the east side and one on the west side of the city. Two customers order some inch plywood. Customer A needs 50 sheets and customer B needs 70 sheets. The east side store has 80 sheets and the west side store

    asked by caer
  46. animals

    A stray dog used to bark at the locals in the street. However each time whenever the person who is barked at, approached the dog, it would run away cowardly. a.Why does the dog keeps on barking in a threatening manner whereas it is actually afraid of the

    asked by iera
  47. physics

    Calculate the half-life of a radioactive substance that decays by a factor of 3 in concentration every 1 million years

    asked by kathy
  48. Science

    During exercise your body's blood pressure increases as it cool down the body's blood pressure slowly returns to its normal state this is know as?

    asked by kwangmin
  49. Physics

    In an electricity experiment, a 0.900g plastic ball is suspended on a 50.0cm long string and given an electric charge. A charged rod brought near the ball exerts a horizontal electrical force F⃗ elec on it, causing the ball to swing out to a 23.0∘

    asked by Dan
  50. chemistry

    What is an ionic solid? A. One positive ion and one negative ion bonded to form a solid B. Many nonmetal atoms bonded together to form a solid C. Many positive and negative ions bonded to form a solid D. Many metal atoms bonded together to form a solid I

    asked by Morgan
  51. calculus

    there are no examples of this type of problem in my book so if you could help walk me through it - that would be extremely helpful. thanks ahead of time. Find the extreme values of the function on the interval and where they occur. 4) F(x)=³√(x); -3

    asked by K.T.
  52. Chemistry 120

    Calculate the pH of aqueous solution 0.0000019 M KOH

    asked by David Allen
  53. chemistry

    Malic acid is a weak diprotic organic acid with K1 = 4.0x 10-4 and K2 = 9.0 x 10-6. (a) Letting the symbol H2A represent malic acid, write the chemical equations that represent K1 and K2 . Write the chemical equation that represents K] xK2 . (b)

    asked by pinky
  54. chemistry

    Under standard conditions for all concentrations, the following reaction is spontaneous at 25 ¢XC with EO = 0.16 V. + - 02 (g) + 4 H (aq) + 4 Br (aq) -+ 2 H20 (I) + 2 Br2 (1) If [H+] is a?justed by adding a buffer of 0.10 M NaOCN and 0.10 M HOCN (Ka = 3.5

    asked by leo
  55. Math

    Penn writes a 2013-term arithmetic sequence of positive integers, and Teller writes a different 2013-term arithmetic sequence of integers. Teller's first term is the negative of Penn's first term. Each then finds the sum of terms in his sequence. If their

    asked by Matt
  56. Math

    Laverne starts counting out loud by 5's. She starts with 7. As Laverne counts, Shirley sums the numbers Laverne says. When the sum finally exceeds 5000, Shirley runs screaming from the room. What number did Laverne last say before Shirley flees?

    asked by Carla
  57. urgent help statistic

    A random sample of 20 people who resided within the u.s resulted in average viewing time of 4.76 hrs per day with a sample standard deviation of 2.297 hrs. obtain and interpret a 95% confidence interval, for the mean viewing time of all americans

    asked by Anonymous
  58. CAL

    The slope of the line normal to the graph of 4 sin x – 9 cos y = 9 at the point (x,0)? How do you do this?

    asked by Carey
  59. Any math tutor online? Help

    Two companies charge these rates for printing a brochure : Company A charges $175 for set up and 0.10 pet brochure Company B charges $250 for set up and 0.07 pee brochure A linear system that model this situation is C=175 + 0.10n C =250+ 0.07 Where c is

    asked by Emmanuel
  60. history 3

    compare and contrast the experience of the creeks and cherokees in Georgia following the war of 1812 ? help please!!

    asked by HELP MEEEEE
  61. Car Design

    What other subject area is used with art for a career in car design? Language Arts history math health I think math

    asked by Anonymous
  62. Math

    Natalia constructed a right triangle with two side lengths measuring 3 and 5 units. She constructed a second right triangle similar to the first one, with the two corresponding sides measuring 5.1 and x units in length, respectively. What is the missing

    asked by Raylin
  63. astronomy

    if our Sun was replaced by a star twice the mass, how many days would our year be?

    asked by kathy
  64. math

    In the equation 1/5 (x-50)=25 X represents the number of pages of a book.

    asked by kenny
  65. chemistry

    A. Orbital shape B. Orientation in the orbital C. Main energy level D. Electron spin

    asked by Morgan
  66. chemistry

    If your car gets 21.4 mpg, how many L of CO2, will you release into the atmosphere, if you drove the 1280miles from Towson University to key West Florida for a much needed break after taking Chemistry 121? Assume 1.05atm and 17.0C. What would your carbon

    asked by Anonymous
  67. History

    compare and contrast the experience of the creeks and cherokees in Georgia following the war of 1812

    asked by HELP MEEEEE
  68. chemistry

    If your car gets 21.4 mpg, how many L of CO2, will you release into the atmosphere, if you drove the 1280miles from Towson University to key West Florida for a much needed break after taking Chemistry 121? Assume 1.05atm and 17.0C. What would your carbon

    asked by Nancy
  69. Chem Moles

    Use this equation: N2 + 3 H2 ---> 2 NH3 If 3.00 moles of H2 were used, how many moles of NH3 would be made? If 0.600 moles of NH3 were produced, how many moles of H2 are required?

    asked by Theresa Kent
  70. Chemistry

    Which electron would have the highest ionization energy for an oxygen atom? A. 2nd B. 1st C. 5th D. 6th If it is the highest I was guessing b or d.

    asked by Morgan
  71. calc

    A vector parallel to the tangent to the curve x=3t^(4/3) y=2t^3 -1 z= 2/(t^2) at the point (3,-3,2) on the curve is: the answer is how do you get this??

    asked by sam
  72. astro

    The intensity of an object is related to the distance d to the observer by the equation (I1/I2) = (d2/d1)2. If the apparent magnitude of the Sun seen from Earth has a value of -26.74, what is the apparent magnitude of the Sun seen from Neptune (30AU from

    asked by kathy
  73. chemistry

    If your car gets 21.4 mpg, how many L of CO2, will you release into the atmosphere, if you drove the 1280miles from Towson University to Key West Florida for a much needed break after taking Chemistry 121? Assume 1.05atm and 17.0C. What would your carbon

    asked by jessica
  74. Language arts-Johnny Tremain

    how has the political climate of Boston changed since the beginning of the book?

    asked by me
  75. language arts

    Johnny Tremain How does Rab's reaction to Johnny's hand compare to that of other people's? A like others, Rab is horrified B While others react with disgust or pity, Rab ignores the injury until Johnny mentions his band hand C Rab expresses great pity for

    asked by katie
  76. social studies

    Is the Boston Massacre appropriately named.

    asked by Olive
  77. Chemistry

    I'm stumped 4ko2 + 2co2 ----2k2co3 + 3o2 What mass of k02 in grams is required to react with 8.90 l at 22.0 c and 767 mm hg? Please help thank you

    asked by Shane
  78. Math

    What do you do to check whether a number is rational or irrational? In your explanation, use an example of an irrational and a rational number. How does finding the square root of a number compare to finding the cube root of a number? Use the number 64 in

    asked by HELP MEEEEE
  79. Math HELP!

    Consider the function y = 3x5 – 25x3 + 60x + 1. Use the first or second derivative test to test the critical points. How many relative maxima did you find? 0 1 2

    asked by Olivia
  80. math

    Megan is making bracelets to sell to earn money for the local animal shelter It takes her 1/4 hour to pick out all the beads and 1/10 hour to string them. This week, she only has 5 1/4 hours to make bracelets. How many bracelets will Megan be able to make?

    asked by kymy
  81. math

    Tide's boat rental charges a rental fee of $200 plus $30 per hour. Surfs rental charges a rental fee of $240 plus $25 per hour. For what number of hours is the boat rental cost the same at each rental business

    asked by Anonymous
  82. Math

    Estimate each product of 4 5/8 x 1/3=

    asked by Jasmine
  83. Langue Art

    callie the meaning that best matches the word in italics. The (inflamatory) remarks of men such as Sam Adams and James Otis did much to move the colonists to revolt against England. A. Carelessly worded B. Meant to cause peace C. Ambigous or unclear D.

    asked by callie
  84. math

    Megan rented a car that cost $35 per day plus $0.20 per mile for each mile driven. Which expression shows the cost of renting the car for 2 days and driving 180 miles?

    asked by Carvin
  85. math

    Ok. The question is 'How does the ratio of two side lengths within one figure compare to the ratio of the corresponding side lengths in the other figure?' if you just give me a hint on this please!

    asked by chelsea
  86. division

    9/72=8 56/7=8 49/6=8 36/9=4 64/8=8 6/24=4 5/25=5 3/15=5 Easy I'm in fifth grade and I know this 😜

    asked by Jamie Fuler
  87. Science Help!!!!

    To solve the problem of a polluted stream a scientist traced where the pollution was coming from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of

    asked by callie
  88. Policing

    During what decade were the precepts and designs of new-generation jails first introduced and adopted? a. the 1960s b. the 1970s c. the 1980s d. the 1990s is it B

    asked by Amy
  89. Economics

    What are two reasons why the values of corporations fluctuate? Explain. My answer: Competition and events in the world

    asked by Bob
  90. calc

    a lamina in the xy plane is bounded by y=0,x=0 and 2x + y=2 has mass density at (x,y) equal to the distance to the x-axis. find the mass of the lamina. the part that is tripping me up is the mass density

    asked by sam
  91. chemistry(solutions)

    What is the % w/v of 13.2 g of salt dissolved in 264 mL of solvent?

    asked by jessie
  92. Policing

    Which of the following statements most accurately reflects parole board membership in the United States? a. Parole boards include 5-8 members. b. States that have abolished parole release may still have parole boards. c. Parole boards are appointed by a

    asked by Amy
  93. math

    what is recipricol and can you give me an example. thank you

    asked by Anonymous
  94. math

    When a grizzly bear hibernates, its heart rate drops to 10 beats per minute, which is 20% of its normal value. What is a grizzly bear's normal heart rate when not hibernating?

    asked by person
  95. math

    An estimated 3 out of every 25 men are left-handed. What percent of men are left-handed?

    asked by person
  96. math

    Emily's family loves to work together in the garden. They have a slight preference for flowers, as 60% of their plants are flowers and 40% are vegetables. They have 50 plants growing in the garden. How many vegetable plants do they have?

    asked by person
  97. Science help

    (Blank) are nonrenewable resources that are used around the world because they are relatively inexpensive. My answer Fossil fuels Am I right?

    asked by callie
  98. Math

    Marie wants to draw a painting with an area of 40 square inches. If she draws her painting on 1inch grid paper how many squares would the painting coved. tell why

    asked by BEC
  99. Technology

    The magnitude of harm that could result from the development of a technological project, and the population on whom this harm predominantly falls, is an ethical question related to: public harms of aggregation. whistle-blowing. distributive justice.

    asked by Amy
  100. Technology

    According to Alan Durning, the basic value of a sustainable society is: A. that any society's consumption levels must be tied to locally available resources. B. each generation should meet its needs without jeopardizing the prospects of future generations

    asked by Amy
  101. Science help

    A homeowner determined that he used 114 gallons of oil every month to heat his home in the winter. This information would be considered part of his My answer Carbon footprint Am I right?

    asked by callie
  102. Society and Tech

    The current global growth pattern adds about __________ people to the world every year. 90 million 200 million 695 million 1 billion is it 90 million?

    asked by Amy
  103. Math

    How much more money? The ratio of Beatriz’s savings to Hannah’s savings is 4 : 7. The ratio of Hannah’s savings to Julia’s savings is 3 : 5. The three girls have a total savings of $136. How much more money has Julia saved than Beatriz? Explain how

    asked by Anonymous
  104. Society and Tech

    According to Joel Cohen, head of the laboratory of populations at Rockefeller University, the earth's carrying capacity for human populations depends upon: A. reducing meat consumption. B. eliminating social barriers to innovation. C. individual choices

    asked by Amy
  105. Economics

    according to the law of supply the higher the price A the more consumers are willing to pay B the larger the quantity produced c the smaller the quantity produced D the more the availability of a good is reduced

    asked by San
  106. Science help

    In the ocean, there are areas where there are very few living things. (Blank) is the term that described when this happens to a natural gas. My answrer Aquaculture Am I right?

    asked by callie
  107. math

    A health researcher wanted to know if there was a difference in success rates between three methods of quitting smoking: A, B, and C. She designed a study with 15 participants, 5 in each group, and asked participants to track how many cigarettes they

    asked by Sam
  108. chemistry

    A 14 karat gold alloy contains 58% m/m gold. How much of this alloy can a jeweler make using 50.0 g of pure gold?

    asked by Bonnie
  109. Economics

    What is an oligopoly? A. An agreement by a formal organization of producers to coordinate prices and production B A market structure in which a few large firms dominate the market C A market structure in which two firms have a price way D a market

    asked by San
  110. Society and Tech

    According to the textbook, __________ became the greatest human experiment with radiation exposure; this is based on the curies (ci) of radiation that were released as a result. the accident at Chernobyl Hiroshima bombing Nagasaki bombing the accident at

    asked by Amy
  111. english

    Is sandwich a compound word?

    asked by Anonymous
  112. English

    Which Greek root means “relating to color”? Not sure which one it is. chrys chron chord chrom

    asked by Anonymous
  113. Math

    If Log27 in base5=x and Log5 in base3=y., find xy

    asked by Ekingdeft
  114. Stats

    Research shows that 14% of 6th graders in K-6 schools have tried cigarettes and 61% of 7th graders in 8-9 or 7-9 middle schools have tried cigarettes. what is the absolute increase to the nearest percent? A. 77% B. 336% C. 436% D. 47% I don't know this one

    asked by Amy
  115. MATH

    if the legs of a right triangle have lengths of 6 inches and 8 inches what is the length of the hypotenuse in inches A. 11 B. 13 C. 10 D. 16***

    asked by HELP MEEEEE
  116. Finance

    Due to a recession, expected inflation this year is only 2.75%. However, the inflation rate in Year 2 and thereafter is expected to be constant at some level above 2.75%. Assume that expectations theory holds and the real risk-free rate is r* = 3%. If the

    asked by Rokera
  117. Math

    Mary's parents decide to give her an allowance every Saturday. The first Saturday they give her .01 cent. For each successive week they double the amount given the previous week. If Mary saves her allowance, in how many weeks will she be a millionaire?

    asked by Anonymous
  118. chemistry(ppm parts per million)

    How would i calculate 2.34 mg x 10^6 divided by 3.50 kg

    asked by winnie
  119. English

    What is the meter of the following line from “A Sybil” by Rilke? “Her age became too much to say” Im confused and cant find an answer. Iambic pentameter Iambic tetrameter Trochaic pentameter Trochaic tetrameter

    asked by Anonymous
  120. Algebra please help answer

    A certain colony of bacteria triples in length every 10 minutes. It's length is now 1 millimeter. How long will it be in 40 minutes? Please help answer thx

    asked by Steph
  121. Algebra ASAP thx

    Tim is reading a book. On Monday he reads 3 pages. On each day after that, he reads 3 times the number of pages that he read on the previous day. How many pages does he read on Thursday?

    asked by Steph
  122. Algebra 1 thx

    Hadley's softball team has a phone tree in case a game is canceled. The coach calls 3 players. Then each of those players calls 3 players, and so on. How many players will be notified during the third round of calls? Please help answer

    asked by Val
  123. Algebra 1

    The square tile shown has a side length of 10.5 inches. What power can you write to represent the area of the tile? Write the power as an expression with a base and exponent, and then find the area of the square.

    asked by Val
  124. Math

    A museum calculates the rate for groups using the equationC=4P+8,where P is the number of people and C is the total cost in dollars. If the cost for a group is $60, how many people are in the group?

    asked by Alex
  125. Chemistry

    The heat of combustion of benzene, C6H6, is -41.74 kJ/g. Combustion of 3.65 of benzene causes a temperature rise of 4.41 C^o in a certain bomb calorimeter. What is the heat capacity of this bomb calorimeter? (kJ/C^o) So, I what I did was I multiplied

    asked by Bobby
  126. English

    “You may well ask, ‘Why direct action? Why sit-ins, marches, etc.? Isn't negotiation a better path?’" Which best describes the syntax of this passage? Im stuck with this Figurative Parallel Choppy Rhetorical

    asked by Jackie
  127. chemistry

    In the Bohr model, which is the lowest energy state available for an electron? A. nth B. excited state C. first state D. ground state Im thinking the answer is c or d.

    asked by Morgan
  128. chemistry

    write a chemical reaction for lead2 nitrate + sodium iodide ->

    asked by bren
  129. math

    How much more money? The ratio of Beatriz’s savings to Hannah’s savings is 4 : 7. The ratio of Hannah’s savings to Julia’s savings is 3 : 5. The three girls have a total savings of $136. How much more money has Julia saved than Beatriz? Explain how

    asked by Anonymous
  130. MATH

    -5(-1+6)

    asked by KEYKEY
  131. Ceramics (help!!!)

    When creating clay forms what must be done with inside?? When applying glaze to a ceramics piece, it is important to wax the foot, or the bottom of the piece. What might happen if it isn't waxed??

    asked by Daisy
  132. Urgent geometry help

    On my test over parallel lines and proportional parts in triangles today, there was a question that asked to solve for x. There was 2 problems with x in them in the triangle. So would I just have to multiply each part by two and set them equal to each

    asked by Anonymous
  133. Math

    Evaluate 1/3 + square root(3)/12 + 1/16 + square root (3)/64. I hope this makes sense. Right now we're learning sequences and series and I'm really confused on this question.

    asked by Jeff
  134. Science

    9. If the following graph represents the decay of strontium-90 in an igneous rock, what event occurred at 0 years on the horizontal axis? There is a picture but I cant upload it. Please help me!

    asked by Taryn S.
  135. Maths

    A rectangle field is twice as long as its width and is surrounded by a fence 180 meters long, find the length of the field

    asked by Keron
  136. French

    Is this grammatically correct? J'aime jouer à des jeux vidéo.

    asked by Anonymous
  137. math

    teacher has 27 students. she asks the students to form as many groups of 4 as possible. How many students will not be in a group?

    asked by Anonymous
  138. essex couty college

    translate this sentence into an equation rita's score decreased by 16 is 61

    asked by rosa arias
  139. chemistry

    gasoline sold in ontario must contain at least 5.00% v/v ethanol? How much gasoline contains 1.50 L of ethanol

    asked by katie
  140. AP Calc B/C

    The base of a solid is the region enclosed by y=x^3 and the x-axis on the interval [0,4]. Cross sections perpendicular to the x-axis are semicircles with diameter in the plain of the base. Write an integral that represents the volume of the solid. I drew a

    asked by Anon
  141. AP Calc BC

    Solve the differential equation y'= radical(x)/(-3y) i made y' dy/dx and moved the y's to one side and the x's to the other, and ended up with y^2=(-4/9)x^3/2 + c, but i'm not sure if that's write, and is that the form i'm supposed to leave it in?

    asked by Anon
  142. Help

    There are 2 piles of papers on a desk. Each pile has the same number of papers. There are 12 papers in all on the desk. How many papers are in each pile?

    asked by Anonymous
  143. MATH 4TH GRADE

    Teacher has 27 students. She asks the students to form as many groups of 4 as possible. How many students will not be in a group?

    asked by Anonymous
  144. Math

    Why are the estimates of 6/10 x 18 shown below different? Is one estimate better than the other?

    asked by Jasmine
  145. math

    The Eskimos are trying to generate more money because player wages are increasing. they have came up with a couple of plans: Plan 1 : they are going to open up 1850 new seats in the endzone that will be reserved for family seating. they project that they

    asked by Emmanuel
  146. MATH

    A carpenter has a board that is 10 feet long. He wants to make 6 table legs that are all the same length. What is the longest each leg can be? Thanks

    asked by Lina
  147. Math Plz dont ignore Plz

    The Eskimos are trying to generate more money because player wages are increasing. they have came up with a couple of plans: Plan 1 : they are going to open up 1850 new seats in the endzone that will be reserved for family seating. they project that they

    asked by Emmanuel
  148. psychology

    Dr. Comer points out risks of adolescence, such as alcoholism, drug abuse, and teen pregnancy

    asked by christy
  149. MATH

    A sporting goods company can ship 6 footballs in each carton. How many cartons are needed to ship 75 footballs? Explain how you did it?

    asked by Anonymous
  150. Algebra 1 thx

    Antonia is saving for a video game. On the first day, she saves two dollars in her piggy bank. Each day after that, she doubles the number of dollars she saved on the previous day. How many dollars does she save on the sixth day?

    asked by Val
  151. alegebra / math

    How much more money? The ratio of Beatriz’s savings to Hannah’s savings is 4 : 7. The ratio of Hannah’s savings to Julia’s savings is 3 : 5. The three girls have a total savings of $136. How much more money has Julia saved than Beatriz? Explain how

    asked by Anonymous
  152. physics

    How much work is required to accelerate a 0.145 kg baseball from rest, to a speed of 38.7 m/s?

    asked by bill
  153. physics

    A student wearing frictionless in-line skates on a horizontal surface is pushed, from rest, by a friend with a constant force of 45 N. How far must the student be pushed, starting from rest, so that her final kinetic energy is 352 J?

    asked by bill
  154. physics

    A 75 kg bobsled is pushed along a horizontal surface by two athletes. After the bobsled is pushed a distance of 4.5 m starting from an initial speed of 1.2 m/s, its speed is 6.0 m/s. What is the change in kinetic energy? Find the magnitude of the net force

    asked by bill
  155. MATH

    A carpenter has a board that is 10 feet long. He wants to make 6 table legs that are all the same length. What is the longest each leg can be? Please explain how you find a sum of this problem.

    asked by Anonymous
  156. math

    The Eskimos are trying to generate more money because player wages are increasing. they have came up with a couple of plans: Plan 1 : they are going to open up 1850 new seats in the endzone that will be reserved for family seating. they project that they

    asked by Anonymous
  157. psychology

    Dr. Comer points out risks of adolescence, such as alcoholism, drug abuse, and teen pregnancy A) are more severe in lower socioeconomic groups B) are virtually nonexistent in middle-income children C) exist for all children, regardless of income level D)

    asked by christy
  158. psychology

    Which of the following is the MOST accurate conclusion one can draw about the mental health field? A) Mental health professionals are gaining respect in society. B) What mental health professionals know and can do outweighs what they do not know and cannot

    asked by christy
  159. Math

    Let a1,a2,......a10 be an arithmetic sequence. If a1+a3+a5+a7+a9=17 and a2+a4+a6+a8+a10=15 then find a1.

    asked by Matt
  160. psychology

    51. Given the changes in sex-offender laws, the emphasis of concern appears to be swinging toward: A) protecting children. B) sympathizing with sex offenders. C) white Americans. D) states' rights

    asked by christy
  161. chemistry

    since 1991, house paint produced in Canada must contain no more than 600 ppm of lead. What is the maximum mass of lead permitted ion a 2.50 kg can of paint?

    asked by GEORGE`
  162. Chemistry

    What is an ionic solid? A. One positive ion and one negative ion bonded to form a solid B. Many nonmetal atoms bonded together to form a solid C. Many positive and negative ions bonded to form a solid D. Many metal atoms bonded together to form a solid I

    asked by Morgan
  163. chemistry

    What mass of sodium hydroxide pellets must be poured into a waste drum containing 20.0 L o 3.0 mol/L sulphuric acid to completely neutralize the waste acid solution? Write a balanced chemical equation for this reaction. okay, so here is the work I already

    asked by julie
  164. Science help

    A (blank) is a tool used to capture the energy in sunlight. My answer Photochemical Am I right?

    asked by Callie
  165. Math

    Zach had to make bracelets for Student Council. He made 10 of them on Monday and 2/5 of them on Tuesday. Zach completed the remaining 1/2 on Wednesday. How many bracelets for Student Council did Zach have to make? Tuesday = 2/5 = 4/10 of the total.

    asked by Tom
  166. Science help

    1.Some plastics are made from corn. These plastics are biodegradeable. This means that plastics made from corn will (blank) than regular plastic My answer decompose faster 2. In the ocean, there are areas where there are very few living things. (Blank) is

    asked by Callie
  167. math

    A boat traveled 210 miles downstream and back. The trip downstream took 10 hours. The trip back took 70 hours. What is the speed of the boat in still water. What is the speed of the current?

    asked by Ryan
  168. chemistry

    Find the molar concentration of 57.9 g of potassium chlorate dissolved in 975 mL of water

    asked by yui
  169. math

    lamina in the xy plane is bounded by y=0,x=0 and 2x + y=2 has mass density at (x,y) equal to the distance to the x-axis. find the mass of the lamina. the part that is tripping me up is the mass density

    asked by sam
  170. Quick math help

    On my test over parallel lines and proportional parts in triangles today, there was a question that asked to solve for x. There was 2 problems with x in them in the triangle. So would I just have to multiply each part by two and set them equal to each

    asked by Anonymous
  171. Algebra 1

    what is the equation to y= -1/12x+4 so that the 2nd line is parallel?

    asked by Steve
  172. science 1 question

    which of the following is an example of an effect of natural selection? All of the children of two parents are male. Carbon cycles through ecosystem. Favorable environmental conditions cause an increased food supply. Polar bears have white fur. Is the

    asked by SkatingDJ
  173. physics

    Calculate the maximum deceleration of a car that is heading down a 14.5° slope (one that makes an angle of 14.5° with the horizontal) under the following road conditions. You may assume that the weight of the car is evenly distributed on all four tires

    asked by mathew
  174. chemistry

    Which statement best describes what must occur for two atoms to combine to form a chemical bond? A. The electrons of one nucleus must transfer to the nucleus of the second atom for a chemical bond to form. B. The repulsive forces of both nuclei must

    asked by Morgan
  175. Chemistry

    2C2H6+702---->4CO2+6H20 DELTAH= -3120.6 kJ/mol What mass of ethane must be combusted in order to heat 366 g of water from 25 degree celcius to 100 degree celcius? Assume the heat transfer is 100% efficient. a)44.1 g b) .903g c) 3.61g d) 2.21 g Should I

    asked by Anon
  176. Calculus

    Find the derivative of 1/(1+(x-3)^2) Steps would be appreciated.

    asked by Dan
  177. Chemistry

    How do you know that a given reaction is not an acid base reaction? (apart from the fact that it should have an acid and a base and it should be a double displacement reaction)? I mean I know acids have protons (H+) and bases have hydroxides (OH-) but

    asked by Anon
  178. pre algebra

    Two bank robbers flee at 60 mph. 26 minutes later, a police helicopter follows at 120mph. How long til they catch them? I figured 39 minutes. I takes the police 13 minutes to get to the 26 mile mark. Then the robbers move 13 miles forward. then the police

    asked by Phoebe
  179. Nicola

    Hello, I need some help with a few questions about this poem: She was a Phantom of delight When first she gleamed upon my sight; A lovely Apparition, sent To be a moment's ornament; Her eyes as stars of Twilight fair; [5] Like Twilight's, too, her dusky

    asked by Literature
  180. physics

    A person sitting in a chair (combined mass 80kg) is attached to a 6m long cable. The person moves in a horizontal circle. The cables angle is 62 degrees below the horizontal. What is the persons speed? Note: the radius of the circle is not 6m. I really

    asked by Todd
  181. general chemistry

    If 1.0 g samples of each compound were dehydrated, which sample would lose the greatest mass of water? Molar Masses: LiCl* H2O= 60. g mol–1 MgSO4* H2O= 138. g mol–1 FeSO4*H2O= 170. g mol–1 SrC2O4*H2O=194. g mol–1

    asked by Anonymous
  182. general chemistry

    Which produces the greatest number of ions when one mole dissolves in water? (A) NaCl (B) NH4Cl C) NH4NO3 (D) Na2SO4

    asked by Anonymous
  183. Algebra 3

    Suppose you are tossing an apple up to your friend on a third-story balcony. After x seconds the height of the apple is given by h= -16t^2+38.4t+0.96. Your friend catches the apple just as it reaches its highest point. How long does it take for the apple

    asked by Francella
  184. Algebra 1

    suppose you can work a total of no more than 20 hours per week at your two jobs. Babysitting pays $5 per hour, and your cashier job pays $6 per hour. youneed to earn at least $90per week to cover your expenses. Write a system of inequalities that show s

    asked by molly
  185. Math

    Write each of the fractions below as a division expression. Then write each fraction as a whole number or mixed number (I need help with this, because it confuses me as to how to write it as a division expression. Also sorry for no work saw.) 1. 5/4 2.

    asked by Ben
  186. Math

    Part (a): Find the sum a+(a+1)+(a+2)+.....+(a+n-1) in terms of a and n Part (b): Find all pairs of positive integers (a,n) such that n>= 2 and a+a+1)+(a+2)+....+(a+n-1)=100.

    asked by Matt
  187. Physics

    I don't completely understand what this question is asking: Three people are standing on a horizontally rotating platform in an amusement park. One person is almost at the edge, the second one is (3/5)R from the center, and the third is (1/2)R from the

    asked by Todd
  188. Math

    Find the general term of the geometric sequence 36 , 6 , 1 , 1/6 , 1/36 ,... .

    asked by Anonymous
  189. Math

    Write the sum (in sigma notation) 1 + 3/2 + 2 + 5/2 + 3 + 7/2 + 4 Sigma notation?

    asked by Sandy
  190. MATH

    Find the sum 4 Σ(0.5)^n n=0

    asked by Leoben
  191. Science

    Why are there variations in atmospheric pressure how was this proven? Why do your ear pop when trebling to different altitudes?

    asked by Jennifer
  192. Math

    Find the sum of the series -4 + 1 -1/4 + 1/16 - 1/64 + 1/256 + ... .

    asked by Anonymous
  193. american national governement

    The basis for national power lies in... A.) The interstate commerce clause only B.) The supremacy clause andnthebtreaty clause only C.) The trwaty clause and the interstate clause only D.) The interstate commerce, supremacy, and treaty clauses

    asked by jamie
  194. Chemistry

    2HCl+Pb(NO3)2---> PbCl2 (s)+2HNO3 Can you please tell why this is not an acid base reaction?

    asked by Anon
  195. algebra

    joe is planning a 5 hour canoe trip. he can paddle 4 miles per hour in still water and the current is 3 miles per hour. how far downstream can he go?

    asked by jp
  196. science

    why is it rare for the soft parts of an organism to become a fossil? a) the soft parts take a long time to decay b) the soft parts can be eaten by animals***** c) the soft parts cannot be buried in sediment d) the soft parts form petrified fossils which of

    asked by SkatingDJ
  197. math

    A piece of plywood 24 inches wide is cut into strips 2 1/2 inches wide. How many strips of this width can be cut?

    asked by tina
  198. math algebra

    A rectangular box has a length of 8 ft and a width of 2 ft. The length of the three dimentional diagonal is 10 ft. What is the height of the box? I think answer is 12.96, but not sure. any help is appreciated thanks in advance

    asked by taylor
  199. English 4

    Locate a brief passage (about a paragraph in length) from The Red Badge of Courage that describes the course of an assault using details and mental associations rather than factual or realistic representation. Contrast it with the following excerpt

    asked by Rosalie
  200. Math

    I am a number between 20 and 30. When you put me into 7 equal groups, there is an odd number in each group and 2 are left over. What number am I

    asked by Everette
  201. basic chemistry

    If 0.50 mol of Na3PO4 is mixed with 0.30 mol of BaCl2, the maximum number of moles of barium phosphate which can be formed is: How do i set up the problem?

    asked by Anonymous
  202. Chemistry

    If a 40 gram sample of radioactive isotope was present at 4pm, but a 5 gram sample remained at 4:30 pm, what is the half-life in minutes?

    asked by Jason
  203. Psychology

    A researcher has conducted an experiment in which she has given participants a placebo, 10mg, and 20mg of a drug. She then measured their anxiety, blood pressure, and heart rate in response to the drug. How many levels does this experiment’s independent

    asked by Anonymous
  204. Chemistry

    Which of the following is an example of sp3d2 hybridization? A. C2H6 B. IF7 C. PCl5 D. SF6

    asked by Morgan
  205. chemistry

    Which of the following spectroscopies is/are suitable for studying materials on surfaces? A. IR and UV/V B. UV/V C. NMR D. XPS and UPS

    asked by Morgan