Questions Asked on
October 5, 2014

  1. physics

    A truck of mass 8912 kg moving at a speed of 66.7 mph has lost its brakes. Fortunately, the driver finds a runaway lane, a gravel-covered incline that uses friction to stop a truck in such a situation; see the figure. In this case, the incline makes an

    asked by Anonymous
  2. Calculus

    I have y = sin^2(3^(x)) which I rewrite as y = (sin(3^(x)))^2 I got the derivative using the chain rule as the following y' = 3(sin(3^x))^2 (cos(3x)) (3^(x)(ln(3)) Can anyone confirm whether this is right/wrong? Thanks

    asked by Tom
  3. chemistry

    Following oxidation-reduction reaction by using the oxidation state method a) O2+H2O+Pb=Pb(OH)2

    asked by mathew
  4. Physics

    Two sources of equal amplitude undergo interference the energy at maxima is four times that due to either source is this a violation of the principle of conservation of energy. Explain. Can someone help me summarize a good model answer and further

    asked by Ariana
  5. English

    Which of these is an example of direct characterization Treys voice remained calm as he shared the news Taya was well known for her good looks Marcus is shy and has difficulty speaking to a crowd

    asked by Sandy
  6. Physics Resistance

    A piece of wire of resistance, R and uniform cross sectional area, A is cut into four equal parts and bundled together to form a thicker wire. The resistance of the bundled wire is: A 16R B 1/4R C 4R D 1/16R It's either 16 or 1/16 im not sureee. So I need

    asked by Ariana
  7. Calculus

    Integrate sqrt(x^2 + x) dx I have completed the squares and got x^2-x = (x+1/2)^2 -1/4 Now i don't know how to proceed, plz help me!

    asked by Jamie
  8. science

    what is a adaptation

    asked by pranithaa
  9. chemistry

    When 34.1 g of lead reacts with 6.81 L of oxygen gas, measured at 1.00 atm and 25.0°C, 36.1 kJ of heat is released at constant pressure. What is DH° for this reaction?

    asked by george
  10. healthcare statistics

    Transcriptionsist B is a full time employee earning10 per hour and annual sallary of 20,800 transcribes 900 lines per day for a total of 234,00 lines per year what is the unit medical transcription labor cost for transciptionist B

    asked by Anonymous
  11. American Government

    I need help with the following question I am not sure if the answer is B or C. General Revenue Sharing offers states and localities even greater flexibility than block grants because they? A.are given a blank check. B.are completely unaccountable to the

    asked by Molly
  12. Algebra 1 Check

    Hi! Can someone check this and see if they are correct? Thanks! 1.) Which value of x should the expression be further simplified? √(21)x a.) 5 B.) 6 c.) 11 D. 55 My answer: a 2.) 2√43x is show: Which value of x makes the expression equivalent to

    asked by Abby
  13. Math

    1.) Which of the following inequalities is true for all real values of x? a.) x^3≥^2 b.) 4x^2≥2x^2 c.) (3x)^2≥4x^2 d.) 2(x-3)^2≥2x^2-3 2.) Which following inequalities is true for all real values of x? a.) x^5≥x^4 b.) 5x^2≥2x^3 c.)

    asked by Fiona
  14. Pre-Calc

    Find (f/g)(x) for f(x)=1/x and g(x)=x^3. Show all work and state the domain of (f/g)(x).

    asked by Pat
  15. Chemistry

    c) How many grams of each matter is in 2,0 litres of the following water solutions i) 8,6 til-% ethanol solution ii) 22,6 til-% glycol solution (1,2-ethanediol)

    asked by Luiz
  16. Physics

    At t=0 a grinding wheel has an angular velocity of 24.0rad/s . It has a constant angular acceleration of 35.0rad/s2 until a circuit breaker trips at time t = 1.90s . From then on, it turns through an angle 436rad as it coasts to a stop at constant angular

    asked by JADE
  17. Delete

    Is it possible to have this question removed? Thanks so much! :) Subject: Pre-Calc Date: Saturday October 4, 2014 Time: 10:27am

    asked by Tori
  18. Algebra

    4 years ago my father's age was 4 times that of my age. At present the sum of my father's age and that of mine is 53 years . What is father's present age.

    asked by Jason
  19. Epidemiology

    Consider each of the following scenarios and explain whether the variable in question is a confounder: 1. A study of the relationship between exercise and heart attacks that is conducted among women who do not smoke. Explain whether gender is a confounder.

    asked by penelope
  20. math

    A medical researcher believes that the standard deviation of the temperatures of newborn infants is greater than 0.6 degrees. A sample of 15 infants was found to have a standard deviation of 0.8 degrees. At the 0.10 level of significance, does the evidence

    asked by Ina
  21. Social Studies

    What was one thing that the Salzburgers established that the other settlers did not? A. Hospital B. School System C. trading post D. tavern I think C??

    asked by Amber
  22. Social Studies

    Which of the following was the main focus of Georgians during the trustee period? A. buliding churches B. survival C. making roads D. building schools I'm not sure but I'm going to go with B or A?

    asked by Amber
  23. Social Studies

    Which of the following is a positive event of the trustee period? A. defense against Spain B. profitable trade with the Indians C. building houses and public buildings D. All of the Above I think D?

    asked by Amber
  24. Social Studies

    Which of the following groups of new settlers in Georgia was pacifits? A. Salzburgers B. Highlands Scots C. Moravians D. Methodists I think C?

    asked by Amber
  25. Social Studies

    Which of the following is NOT something that would describe Georgia's first legislature? A. Some members were elected, while other were appointed by the king. B. Men and Women served as members. C. It had an upper and lower house. D. Land ownership was

    asked by Amber
  26. Chem Urgent Help Please!!!!

    Chromatography is a powerful analytical technique for separating complex mixtures into their components. Do you think it would be practical to use it on a large scale for preparative purposes? Consider the problems this would involve. You have a product

    asked by Layla
  27. Chem Help Please!

    You are carrying out a chemical process according to the equation below. If product C, which is the desired product can decompose to product F, how might you ensure that you stopped the reaction at the optimum point to ensure the maximum yield of C.

    asked by Josh
  28. physics

    Superman throws a boulder of weight 1850N at an adversary on the surface of the earth, where the magnitude of the acceleration due to gravity, g = 9.80m/s2 . What horizontal force must Superman apply to the boulder to give it a horizontal acceleration of

    asked by Serginho
  29. AP European History

    I have to write an essay and the instructions are Analyze the economic, technological and institutional factors responsible for Western Europe’s domination of world trade from 1650-1800 I must have 2 examples for each of the three so far I have Economic:

    asked by Sandy
  30. math

    a painter earns $15 per hour. what is the minimum number of hours he must work to earn at least $200? write an inequality to represent this situation and solve.

    asked by shy gurl
  31. chem

    In a chemical reaction, A and B reacts to form D. C is the intermediate product of this reaction. Percent yield of the reaction A+B->C is 50% and the percent yield of the reaction C->D is 90%. How many moles of D can be produced when 14 moles of A and B

    asked by bekah
  32. Basic Chemical Engineering

    Can someone plz give me the link of the process flow diagram of a textile(dyehouse)? I only need to know the procedures of the main components in the dyeing section. Plz help!

    asked by Jamie
  33. CHEMISTRY

    Consider the following balanced equation: 2N2H4(g)+N2O4(g)→3N2(g)+4H2O(g) Complete the following table showing the appropriate number of moles of reactants and products. If the number of moles of a reactant is provided, fill in the required amount of the

    asked by Run
  34. english

    has anyone read of beetles and angels

    asked by help please
  35. physics

    how long will it take the sound of the starting gun to reach the ears of the sprinters if the starter is stationed at the finish line for a 100 meter race? assume that the sound has a speed of about 340m/s.

    asked by roger
  36. physics

    a horse is running with an initial velocity of 11m/s and begins to accelerate at -1.81m/s^2. how long does it take for the horse to stop?

    asked by roger
  37. math problem

    the school cafeteria serves pizza every sixth day and applesauce every eighth day. suppose that pizza and applesauce are both on today's menu. In how many days will they be together on the menu again?

    asked by Anonymous
  38. ENGLISH

    HAS ANYONE READ OF BEETLES AND ANGELS ITS IMPORTANT

    asked by HELPPP PLEASE
  39. physics

    Janet Leapverifyar drops from a high dive platform with a horizontal velocity of 2.8 m/s. She lands in the H2O below 2.6 seconds later. a. How high is the platform? b. How far from the base does she land? c. What is her final velocity in the vertical

    asked by Delaney
  40. English

    Identify the common noun in the sentence Every year Black Middle School host its annual Spring Fling I thought it was year maybe

    asked by Sandy
  41. english

    which of these is an example of direct characterization The students gasped at the teachers tremendous height Mr Lightner is cruel and is no friend to animals Sasha hid the toys Melissa plays tennis I chose the 3rd one

    asked by Sandy
  42. english help please

    Can someone please explain to me what I need to look for with possessive nouns I have a tough time with all that stuff

    asked by chey
  43. English check

    Which principal part of the verb to teach appears in this sentence. Then she taught me how to cultivate rich and healthy soil and helped me identify which types of plants are best for the environment in my yard. past past participle present present

    asked by sydney
  44. Math

    Julie is conducting an experiment where she placed 29.5 mL of water in a calorimeter at 15.0 °C. Then, 2.4 g of A (molar mass = 48.0 g/mol), also at 15.0°C, is added to the water in the calorimeter and the temperature of the solution increases to 28.0

    asked by Kelly
  45. Physics help please

    Calculate the allowed wavelengths for the emission of a photon initially in the n=3 state in a hydrogen atom

    asked by Sarah
  46. math

    In mathematics class, 30 students received an A on the third test, which is 125% of the students who received an A on the second test. How many students received an A on the second test?

    asked by ashley
  47. education

    what is the syllable pattern for legal

    asked by mike
  48. math

    2t + 8 greater than or equal to -4(t + 1)

    asked by shy gurl
  49. physics

    Two tanks are engaged in a training exercise on level ground. The first tank fires a paint-filled training round with a muzzle speed of 250 m/s at 10.0◦ above the horizontal while advancing toward the second tank with a speed of 15.0 m/s relative to the

    asked by Anonymous
  50. physics

    When a water gun is fired while being held horizontally at a height of 1.00 m above ground level, the water travels a horizontal distance of 4.80 m. A child, who is holding the same gun in a horizontal position, is also sliding down a 45° incline at a

    asked by taylor
  51. physics

    A diver achieves a horizontal velocity of 3.76 m/s from a diving platform located 6m above the water. How far from the edge will the diver be when she hits the water?

    asked by Rachel
  52. math

    If I borrowed $15000 in April 2008 at 6% interest and have paid $150 per month since then, how much have I paid and how much do I owe?

    asked by donna
  53. science

    Krebs Circle produces A)NADH and Carbon Dioxide B)ADP and NADP C)Acytol CoA and sugars D)Water and Carbon Dioxide

    asked by help
  54. stats

    Suppose that the average amount paid by customers at a grocery store is $80. The standard deviation of the amounts paid is $24. The distribution of the amounts paid is skewed. (Notice that the individuals here are customers and the variable is the amount

    asked by Ujash
  55. physics

    A ball on the end of a string is whirled around in a horizontal circle of radius 0.467 m. The plane of the circle is 1.24 m above the ground. The string breaks and the ball lands 2.49 m away from the point on the ground directly beneath the ball’s

    asked by Joan
  56. science

    The outcome of the Calvin Cycle is A)synthesis of sugars B)Production of pyruvate C)Capture of energy from sunlight D)Breakdown of complex molecules and the subsequent release of energy

    asked by bailey
  57. science

    The muscles of a very active organism would contain more mitochondria than the muscles of a less active organism. Select one: True False

    asked by mike
  58. physics

    An automobile traveling along a straight road increases its speed from 89 ft/s to 104 ft/s in 180 ft. If the acceleration is constant, how much time elapses while the auto moves the 180 ft? Answer in units of s

    asked by Confused Student
  59. chem

    Consider the unbalanced chemical reaction Al + Cl2 → AlCl3. How many moles of AlCl3 can be obtained from 360 grams of Cl2? (Molar masses: Cl = 35.45 g/mol, Al = 26.98 g/mol) when i balance the equation i get 2Al+3Cl2->2AlCl3 but when i try to figure out

    asked by bekah
  60. Math

    How would you solve this function algebraically. f(x)=-5v-4x+4+2?

    asked by Lanie
  61. science

    During the process of photosynthesis, plants capture the kinetic energy of moving photons and transform it into potential energy in the form of Select one: a. pyruvate. b. chemical bonds. c. stroma. d. thylakoid disks.

    asked by mike
  62. Chemistry

    a) A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg? b) For potassium metal, the work function W (the minimum energy needed to eject an electron from the metal surface) is 3.68 ×

    asked by Adam
  63. Science help!

    Compounds with high melting points have _____. covalent bonds metallic bonds ionic bonds no chemical bonds 4. Which of the following is NOT a characteristic of minerals? crystalline structure formed by inorganic processes definite chemical composition

    asked by Anonymous
  64. CHEM, HELP!!

    1. If the energy of a photon is 1.32 × 10^-18 J, what is its wavelength in nm? 2. The energy of an electron in the hydrogen atom is determined by what?

    asked by Benjamin
  65. Chemistry Help! (Rydberg Equation)

    a) According to the Rydberg equation, the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicted to lie at a wavelength (in nm) of _____ b) According to the Rydberg equation, the longest wavelength (in nm) in the series

    asked by Christian
  66. Math

    4X^2+4y^2-8X-20y+13=0

    asked by Katelyn
  67. Physics

    A child on a sled is initially at rest on an icy horizontal surface. The sled is pushed until it reaches a final velocity of 7.00 m/s in a distance of 11.2 m. The coefficient of friction between the ice and runners of the sled is 0.200, and the weight of

    asked by Rose Foley
  68. Physic

    A baseball of mass m and initial speed v strikes a catcher's mitt. If the mitt moves a distance Δx as it brings the ball to rest, what is the average force it exerts on the ball? Express your answer in terms of the given quantities. Could someone help me

    asked by Phu-Cuong
  69. Statistics

    1. If we wish to have a 95% confidence interval, what would be the value of the confidence coefficient? & Consider a sample mean (xbar) of 46 calculated from a sample of size 51 drawn from a population of over 1000.

    asked by Rabbitt
  70. Science--3 questions.

    1. Which of the following is not considered to be a rock? coal sandstone pumice lava 2. Which of the following is not one of the three types of rock? igneous magma sedimentary metamorphic 3. The three types of rocks are classified by _____. color grain

    asked by Anonymous
  71. Math

    Lyle is putting his videotapes on a shelf.the shelf is 12 inches long.if each videotape is 1 1/2 inches wide,how many videotapes can he put side by side on the shelf?

    asked by Louis
  72. US History

    Why was seven years of war a turning point in British colonial society and their relationship with England? Please give me 4 different reasons.

    asked by Rachel
  73. comp1

    Contrast/comparison on the Parent Trap and the Remake of the Parent Trap I need help asap.

    asked by Carolyn
  74. Biology

    Which heart beat measurement is most indicative of your general health? i think it is your resting heart beat, but im not sure the reason

    asked by Anonymous
  75. math

    The equation of line l is 3x-4y=24. the line intersects the x -axis at A and the y -axis at B. GIVEN THAT M is the point (4,-3) and O is the origin . find the length of AB .

    asked by asif
  76. calculus

    Implicit diff. y^2 + 4xy +4y^2=40 2yy'+ _______ + 8y*y=0 I am confused with the 4xy. Would you write this out to be 4x*y'+4y OR 4x*4y' + 4y*4x'? Please help

    asked by Annette
  77. physics

    A ball on the end of a string is whirled around in a horizontal circle of radius 0.33 m. The plane of the circle is 1.26 m above the ground. The string breaks and the ball lands 2.4 m away from the point on the ground directly beneath the ball’s location

    asked by cd
  78. Physics

    A particle undergoes three displacements. The first has a magnitude of 15 m and makes an angle of 40 ◦ with the positive x axis. The second has a magnitude of 6.2 m and makes an angle of 158 ◦ with the positive x axis. After the third displacement the

    asked by Robert
  79. chemistry

    how many grams of zinc chloride could be formed from the reaction of 3.57 g of zinc with excess HCL

    asked by Anonymous
  80. English

    What is the theme or message of the poem The Bull Moose by Alden Nowlan? i know the poem is a reference to the crucifix of Jesus but i am not sure about the theme

    asked by Anonymous
  81. Chemistry

    In chemistry, we did a lab in which we had a certain mass of copper, performed multiple experiments on the copper, and at the end, extracted the copper from a solution and weighed it. The goal was that the mass of the final copper should be the same as the

    asked by melbell
  82. English

    What tenses are used in children's books. Present or past. If both, which is used more often?

    asked by Illy
  83. chemistry

    What is the percent mass of calcium in a calcium supplement if 1.06 g of calcium carbonate is extracted from a 2.82 g pill

    asked by Mimi
  84. Science

    We are having a debate in Science class. We are each given two questions to debate each other. 1. The Climate is mainly influenced the by the sun? 2. The earth has been warmer in the past?

    asked by Laila
  85. english

    If an author is skillful at representing the point of view and attitudes of a hobo, a nurse, a corporate CEO, and a variety of other diverse characters, the author is demonstrating

    asked by Nicole
  86. Chemistry

    A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg?

    asked by Danny
  87. cobet, maths

    there are 50 pupils in a class. 43 of them like mathematics, 38 like english and 33 like both mathematics and english. How many pupils like both mathematics and english??

    asked by pjl
  88. Biology

    Which heart beat measurement is most indicative of your general health? i think it is your resting heart beat, but im not sure the reason

    asked by Michelle
  89. physics

    A cart released from rest at the top of a track 90. cm long takes 4.00 seconds to reach the bottom. determine the velocity as the cart reaches the bottom of the track

    asked by Anonymous
  90. probability;math

    A card is chosen at random from a deck of 52 cards It is then replaced and then a second card is chosen.What is the probability of choosing a jack and then an eight?

    asked by jennifer
  91. solve long divison polynomials

    5x-6/10x^2-7x-6

    asked by Anonymous
  92. english

    I have to use end notes for a project I am doing on a famous dead person. I am using information from the person's medical record and diaries and such. But I am not using direct quotes but just a few pieces of information here and there. Ex: William was

    asked by lilly
  93. math

    At noon, ship A is 20 nautical miles due west of ship B. Ship A is sailing west at 24 knots and ship B is sailing north at 25 knots. How fast (in knots) is the distance between the ships changing at 5 PM? I have tried multiple times but keep getting

    asked by Sara
  94. Math

    Solving long division polynomials 5x-6/10x^2-7x-6

    asked by Jeannette
  95. Chem HELP!!

    Which one of the following sets of quantum numbers can correctly represent a 3p orbital? a) (n = 3 l = 1, ml = 2) b)(n = 1, l = 3, ml = 3) c) (n = 3, l = 2, ml = 1) d) (n = 3, l = 1, ml = -1) e) (n = 3, l = 0, ml = 1)

    asked by Eric
  96. computer literacy

    The Internet is BEST described as a vast _______ connection of computer networks that also link to smaller networks.

    asked by ladyk262002
  97. Chem 1330

    Which set of quantum numbers(n, l, ml, ms) could describe the highest-energy electron in a ground-state potassium ion, K? a) (4, 1, -1, 1/2) b) (4, 1, 0, 1/2) c) (4, 0, 1, 1/2) d) (4, 0, 0, 1/2) e) (4, 1, 1, 1/2)

    asked by France
  98. Physics gr. 12

    Rick and Glen are cornered by zombies as they tend to be in each episode. In this particular episode, Glen fires a grappling hook with a rope attached up to the roof of the building they are standing beside. Glen takes a quick look at the bag the rope came

    asked by Luna
  99. Physics

    A block of mass m = 4.30 kg slides along a horizontal table with speed v0 = 8.50 m/s. At x = 0 it hits a spring with spring constant k = 31.00 N/m and it also begins to experience a friction force. The coefficient of friction is given by μ = 0.150. How

    asked by Olivia
  100. statistics

    A poll asked 500 adults if they thought Ontario should produce more, less or maintain current production of ethanol. -160 people responded "more ethanol production" -136 people responded "less ethanol production" -155 people responded "maintain current

    asked by anon
  101. Physics, Help!! URGENT!!!

    A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg?

    asked by Grant
  102. Math

    A uniform bar 1.100 metres in length and having a cross sectional area of 19.500cm square is subject to a loading of 5050.000 newtons. This load causes an extension to the bar length of 2.610mm.Calculate the stress and strain produced

    asked by Barry Morgan
  103. SS

    New France is _____ of the Appalachian Mountains.

    asked by Anon
  104. Micro-Economics

    Suppose that the government imposes a tax on heating oil. 1. Would the deadweight loss from this tax likely be greater in the first year after it is imposed or in the fifth year? 2. Would the revenue collected from this tax likely be greater in the first

    asked by Ann
  105. phi 208

    To check my reading week 4 quiz

    asked by Jessica
  106. Physics

    During baseball practice, you go up into the bleachers to retrieve a ball. You throw the ball back into the playing field at an angle of 42° above the horizontal, giving it an initial velocity of 15 m/s. If the ball is 5.3 m above the level of the playing

    asked by Han
  107. Math

    A 5" by 7" picture is enlarged to 8" x 10". By what percent did it's area increase?

    asked by Jenny
  108. Math Gr 12

    Using proper notation, describe the end behaviour of y = 1 -------- + 3 X-2

    asked by Victoria
  109. Math

    If the side of a square is doubled in size to 8", by what percent did it's area increase?

    asked by Jenny
  110. English.

    What is another strong way of saying : Yes, I would recommend this book to a friend.

    asked by Sally
  111. Math

    In a parking lot 16% of the cars are blue. There are 4 blue cars in the lot. How many cars are not blue? 4x100=400\16= 25 then minus 4 blue cars to get the answer that 21 of the cars are not blue. I know the answer is 21 I'm just not sure if the work is

    asked by Megan
  112. Math

    Water is leaking out of an inverted conical tank at a rate of 0.0109 {\rm m}^3{\rm /min}. At the same time water is being pumped into the tank at a constant rate. The tank has height 9 meters and the diameter at the top is 4.5 meters. If the water level is

    asked by Leah
  113. Geography

    Should geographers regard culture and social customs as generalizations about a group of people, or should they say it comes from people's interaction with the physical environment?

    asked by Ashley
  114. Math

    A sixth grader weighs 90 pounds which is 120% of what he weighed in 4 th grade. How much did he weigh in 4th grade? 90x100=9000/120= 75 So he weighed 75lbs is this correct?

    asked by Megan
  115. geography,maths literacy,life-sciences,tourism

    What career must I take when doing these subjects or what course must I do at tertiary?

    asked by zanele
  116. Finance

    Interest rates on 2-year Treasury securities are currently 5.00%, while 5-year Treasury securities yield 10.00%. If the pure expectations theory is correct, what does the market believe that 3-year securities will be yielding 2 years from now?

    asked by Morgan
  117. Math

    A spherical balloon is to be deflated so that its radius decreases at a constant rate of 12 cm/min. At what rate must air be removed when the radius is 5 cm? Must be accurate to the 5th decimal place. It seems like an easy question but no matter how many

    asked by Leah
  118. Math

    A conical water tank with vertex down has a radius of 10 feet at the top and is 22 feet high. If water flows into the tank at a rate of 30 {\rm ft}^3{\rm /min}, how fast is the depth of the water increasing when the water is 14 feet deep? I have tried

    asked by Sarah
  119. Chemistry

    What volume of 0.1000 M oxalic acid (a diprotic acid) would be required to completely neutralize 100.00 mL of 0.1000 M NaOH?

    asked by Anonymous
  120. US History

    Although the New England, and the Chesapeake region were both settled largely by people of english orgin, by 1700 the regions had evolved into 2 distinct societies. Why did this difference in development occur?

    asked by Ashley
  121. Chemistry

    Naturally occurring copper is a mixture of two isotopes. One of these has 34 neutrons the other has 36. If the relative atomic mass of copper is 63.55 amu calculate the natural abundances (percentages ) of the two isotopes.

    asked by Rose
  122. Math Check

    Hi! Can someone check this and see if they are correct? Thanks! 1.) Which value of x should the expression be further simplified? √(21)x a.) 5 B.) 6 c.) 11 D. 55 My answer: a 2.) 2√43x is show: Which value of x makes the expression equivalent to

    asked by Abby
  123. Chemistry

    The boiling point of diethyl ether CH3CH2OCH2CH3 is 34.500C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is cholesterol . How many grams of cholesterol, C27H46O (386.6 g/mol), must be dissolved in 208.0 grams of diethyl

    asked by Charlotte
  124. ALGEBRA

    The table below shows two equations: Equation 1 |3x - 1| + 7 = 2 Equation 2 |2x + 1| + 4 = 3 Which statement is true about the solution to the two equations? Equation 1 and equation 2 have no solutions. Equation 1 has no solution and equation 2 has

    asked by HELP PLEASE
  125. Math

    Water is leaking out of an inverted conical tank at a rate of 0.0109 {\rm m}^3{\rm /min}. At the same time water is being pumped into the tank at a constant rate. The tank has height 9 meters and the diameter at the top is 4.5 meters. If the water level is

    asked by Elizabeth
  126. Physics

    A bird watcher meanders through the woods, walking 1.10 km due east, 0.624 km due south, and 1.09 km in a direction 18.2 ° north of west. The time required for this trip is 1.046 h. Determine the magnitudes of the bird watcher's (a) displacement and (b)

    asked by Candice
  127. Math

    A spherical balloon is to be deflated so that its radius decreases at a constant rate of 12 cm/min. At what rate must air be removed when the radius is 5 cm? Must be accurate to the 5th decimal place. I keep getting -3769.91118. What am I doing wrong?

    asked by Lucy
  128. Math

    What is the linear approximation of the square root of 8.9? Must be accurate to the fifth decimal place. I have tried everything it seems like yet cannot get the right answer.

    asked by Amber
  129. SOC 101

    Checking my Answers: 1. The Sociological insight can provide which of the following: (Points : 1) Knowledge of group behavior Insight into individual behavior Increased understanding of differences *All of these choices Question 2. 2. Which is the best

    asked by anonymous
  130. Math

    A conical water tank with vertex down has a radius of 10 feet at the top and is 22 feet high. If water flows into the tank at a rate of 30 {\rm ft}^3{\rm /min}, how fast is the depth of the water increasing when the water is 14 feet deep? I have tried

    asked by Sarah
  131. programming

    Write a MATLAB program to create and output the touch-tone telephone signals (Dual-Tone, Multi-Frequency, DTMF) for the input numbers 0 through 9 (disregard the * and # symbols). When a user presses a button on a telephone set, a signal is produced that is

    asked by Amanda
  132. Chemistry

    What volume of 0.1000 M oxalic acid (a diprotic acid) would be required to completely neutralize 100.00 mL of 0.1000 M NaOH?

    asked by Anonymous
  133. statistics

    if you roll a single die and count the number of dots in top what is the probability of getting a number less then 3 on a single throw

    asked by gretchen
  134. Physics

    A stunt-motorcyclist wants to jump over a row of cars that is 94 meters long. In order to clear the cars, how fast must he be going when he hits a ramp that is inclined 30 degrees? Work so far: Delta x= 94m Ax= 0 m/s2 Ay=-9.8 m/s2 Trying to find: V initial

    asked by 2016
  135. Reading

    Can I use a semi-colon in this sentence? She is the best observer;she had months to form the conclusion.

    asked by Monette
  136. Statistics

    You roll two fair dice a blue one and a yellow one what is the probability of and odd on the blue die and 5 or 6 on the yellow die

    asked by gretchen
  137. finding the interest

    Cesar purchased a room air conditioner for $450 and made a a down payment of $90 and financed the rest over 20 months. If the monthly payment was $22.80, what was the interest?

    asked by Leslie
  138. 9th grade algebra

    An Electrician Charges $120 After 2 Hours Of Work And $190 After 4 Hours Of Work. Write A Linear Model That Represents The Total Cost.

    asked by Amanda
  139. Math

    What is the linear approximation of the square root of 8.9? Must be accurate to the fifth decimal place. I have tried entering 2.98328 but that does not appear to be correct.

    asked by Amanda
  140. math

    there are 32 boys and 24 girls. what re the various number of teams that can be made that would have the same number of boys and girls on each team?

    asked by john
  141. Math

    The bookseller sells packages of 15 pens each and 12 pencils each.they want the same number of pens and pencils in their next order.find the smallest number of packages

    asked by Ri
  142. Math

    A street light is at the top of a 17 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 8 ft/sec along a straight path. How fast is the tip of her shadow moving when she is 30 ft from the base of the pole? Must be accurate to fifth

    asked by Leah
  143. Math

    What is the linear approximation of the square root of 8.9? Must be accurate to the fifth decimal place. I have tried entering 2.98328 and 2.98328 but that does not appear to be correct. Please help!!

    asked by Amanda
  144. English

    Okay, in school we just finished "To Kill A Mockingbird" and we have a sort of questionnaire thing to do. One of the questions is "Who symbolizes the "gray ghost" and why?" I have my suspicions that it is Arthur "Boo" Radley but I would really like to make

    asked by Darlene
  145. arithmetic

    vanessa buys a strip pf 25 postage stamps. The strip of stamps is 21 7/8 inches long. How long is a strip after one stamp is used.

    asked by Anonymous
  146. Math

    The circumference of a sphere was measured to be 74.000 cm with a possible error of 0.50000 cm. Use linear approximation to estimate the maximum error in the calculated surface area. Estimate the relative error in the calculated surface area. Must be

    asked by Victoria
  147. Math

    Find the linearization L(x) of the function g(x) = xf(x^2) at x = 2 given the following information. f(2)=1 f'(2)=8 f(4)=4 f'(f)=-3 L(x)=

    asked by Victoria
  148. biology

    Describe Charles Lyell's geological theory about uniformitarian

    asked by Anonymous
  149. Math

    For the equation given below, evaluate dy/dx 3y^2-3x^2+9=0 at the point (2,1)

    asked by Quade
  150. PHI208

    According to Aristotle, happiness is: 1)a contented state of mind. 2)as much pleasure and as little pain as possible. 3)feeling good about oneself. 4)a life that is lived well

    asked by Danelle
  151. math

    Leah picked 2.6 pounds of blackberries. Ashlyn picked 1.8 times as many pounds of blackberries. How many pounds of blackberries did Ashlyn pick?

    asked by Ann
  152. physics

    a projectile is dropped from the top of a building - it falls 1900 ft prior to reaching the ground. determine the magnitude of the acceleration in ft/second squared to the nearest tenth. Question 1 options:

    asked by suzanne
  153. math

    Max had 4/5 bag of trail mix. He divided the trail mix equally amoung 5 friends. What fraction of the full bag of trail mix did each friend receive?

    asked by Ann
  154. chemistry

    A pure gold ring with a volume of 1.88cm3 is initially at 18.4∘C. When it is put on, it warms to 34.3∘C.

    asked by Anonymous
  155. Chemistry

    The oxidation of iodide ion by arsenic acid, H3AsO4, is described by the balanced equation 3I−(aq)+H3AsO4(aq)+2H+(aq)→ I3−(aq)+H3AsO3(aq)+H2O(l) If −Δ[I−]/Δt = 4.8×10−4M/s , what is the value of Δ[I3−]/Δt during the same time interval?

    asked by Joe
  156. Math

    Mitchell is hired to paint on a wall with the area of 21 1/8 of square yards. If the wall is 3 1/4 yards long, what is the width?

    asked by Amy
  157. Math

    For each of the following questions, choose the correct answer. Which statement best describes inductive reasoning? A- It uses previously proven or accepted properties to reach a conclusion. B- It uses observation of patterns and past events to reach a

    asked by Skye
  158. Chemistry

    The oxidation of iodide ion by arsenic acid, H3AsO4, is described by the balanced equation 3I−(aq)+H3AsO4(aq)+2H+(aq)→ I3−(aq)+H3AsO3(aq)+H2O(l) If −Δ[I−]/Δt = 4.8×10−4M/s , what is the value of Δ[I3−]/Δt during the same time interval?

    asked by Joe
  159. Math

    Which term would best describe the following scenario? Vivian solved an equation. She showed all her steps and got the correct answer. What kind of reasoning did Vivian use to solve the equation? A- convenient B- inductive C- predictive D- deductive My

    asked by Skye
  160. Chemistry

    What functional groups do uracil,guanine,cytosine, and tyrosine belong to.

    asked by Jinx
  161. algebra

    A car hits an object the object goes 25 ft in the air and lands 300 ft away, how fast was the car traveling when hit the object?

    asked by Janet
  162. global studies

    Like many absolute monarchs before him, Peter the Great strengthened his own power by limiting the power of Russian

    asked by samantha
  163. MATH

    There is a 3-meter tall vertical ladder from the ground to a ramp. The bottom of the ladder is 10 m from the base of the ramp. The distance along the ramp from the top of the ladder to the loading platform is 24 m. How high above the ground is the loading

    asked by TEJAS
  164. physics

    A particle is traveling without friction up and down hills and valleys. If its initial potential energy is 85 J and its initial kinetic energy is 83 J, what is its total energy, E? E: Correct: Your answer is correct. J B. If at a later point its potential

    asked by Anonymous
  165. math

    (-6x)2square for x=4

    asked by Anonymous
  166. Physics

    In laboratory situations, a projectile’s range can be used to determine its speed. To see how this is done, suppose a ball rolls off a horizontal table and lands 1.2m out from the edge of the table. If the tabletop is 95cm above the floor, I figured out

    asked by Anonymous
  167. physics

    On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The free-fall acceleration on the moon is 1/6 of its value on earth. Suppose he hit the ball with a speed of 33m/s at an angle 28∘ above

    asked by abby
  168. help please

    Devon's target heart rate zone is 140bpm—177bpm. Julian's target heart rate zone is 148bpm—181bpm. They stop running and take their pulse, and both count the heart rate at 173bpm. If they decrease their heart rates by 20bpm, who will be in his THR

    asked by PLEASE HELP
  169. Physics

    Why is it important to use the maximum force reading from a data collection?

    asked by Nicole
  170. Finance

    An insurance company says you can pay for your life insurance by paying $100 at the beginning of each year or $51.50 at the beginning of each half-year. They say the rate of interest underlying this calculation is j2=3%. What is the true value of j2? The

    asked by Mella
  171. math factoring

    factor 2x^4+12x^3-18x^2-108x

    asked by B
  172. Science

    Can you get results from observations? Can you still get results from doing only small amounts of experiments?

    asked by bry
  173. Physics

    A basketball is thrown horizontally with an initial speed of 4.70m/s . A straight line drawn from the release point to the landing point makes an angle of 30.0 ∘ with the horizontal. What was the release height?

    asked by Jenn
  174. chemistry

    Discuss how you would separate Fe+3 from Ca2+

    asked by young
  175. Physics

    A force of 10 N pushing down on a 2m^2 block will produce a pressure of?

    asked by Irah
  176. Calculus

    So here is the question: Find and equation of the tangent line to the graph: 4)f(x)=e^(2x) passing through the point (0,0) I find derivative being f'(x) =2e^(2x) Then m = f'(0) = 2 put into point slope formula: (y-y1)=m(x-x1) y-0 = 2(x-0) which comes out

    asked by Tom
  177. Math

    Water is leaking out of an inverted conical tank at a rate of 0.0109 {\rm m}^3{\rm /min}. At the same time water is being pumped into the tank at a constant rate. The tank has height 9 meters and the diameter at the top is 4.5 meters. If the water level is

    asked by Coop
  178. math

    the sum of three times a number and 5 is equal to the sum of the number and 11.

    asked by fran
  179. Math

    let s(t)= t^4-4t^3+8t for 0 ≤ t ≤ 4 find the total distance traveled by the object. find where the acceleration is positive.

    asked by Tommy
  180. Algebra

    Find the quotient and remainder 7x^6-2x^4+x^2+2 divided by x-2

    asked by PleaseHelp
  181. Chem Help Please!

    In most cases with GLC the area under the peak as a % of the total area for all peaks is interpreted as representing the % mass of the compound measured in the mixture. Explain why this is only an approximation.

    asked by Kayla
  182. Math

    Farmer Jane has only pigs and chickens on her farm. She can't remember how many of each she has but she does know she counted 110 legs and 35 heads. Assuming that each animal is normal, how may of each animal does she have?

    asked by Angel
  183. Algebra

    the points (1,4), (3,8) and (8,3) lie on the graph whose equation is of the form: y=a|x-b|+c where a,b and c are real numbers. find a,b and c.

    asked by Sam
  184. CHEMISTRY

    Total Pressure in a vessel containing Oxygen collected over water at 25 *C was 723 torr. The Vapor Pressure of water at that Temperature is 23.8 torr. What was the pressure of gas?

    asked by Sheila
  185. CHEMISTRY

    How does hydrogen bonding in water affects Density?

    asked by Shi
  186. journalism

    What is the role of the nation-states in controlling the flow of entertainment media?

    asked by bailey, PLEASE HELP
  187. physics

    An automobile with an initial speed of 3.25 m/s accelerates uniformly at the rate of 3.2 m/s 2 . Find the final speed of the car after 4.4 s. Answer in units of m / s

    asked by Anonymous
  188. Math

    A movie poster shows King Kong towering over an adult human. On the poster, King Kong measures 42cm, while the human measures 5 cm. How tall is King Kong supposed to be, to the nearest foot?

    asked by John
  189. Calculus

    let F(x) = f(2x) and suppose that the derivative of F(x) = x^(2). Find the derivative of f(2x).

    asked by Tom
  190. Math

    Considering the word Mathematics, what is the ratio of vowels to consonants? Write the ratio 3 ways. word form: colon form: fraction form:

    asked by Amy
  191. Chemistry

    In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 38.0mi/gal , how many liters of gasoline would you need to buy to complete a 142-km trip in Europe? Use the following conversions: 1km=0.6214mi and 1gal=3.78L.

    asked by Chirst
  192. Math

    write an example of a part to whole ratio.

    asked by Amy