Christina

Newest questions and responses by Christina
  1. Statistics

    you create the data create a set of seven numbers (repeats allowed) that have the five numbers summary. minimum =4 Q1=8 M=12 Q3=15 Maximum=19. There is more than one set of seven numbers with this five number summary. What must be true about the seven

    asked on February 3, 2019
  2. Business English

    Write a paragraph describing your attitudes toward writing. Use the following steps. Prewrite: Jot down a few of the words that come to mind when you think of writing. Think of any significant experiences you have had that have shaped your attitude toward

    asked on January 23, 2019
  3. math

    Express 37 1/2% as a fraction in its lowest terms.

    asked on October 21, 2018
  4. Science

    In a new system of unit called star unit 1*kg=10kg,1m*=1km,1s*=1min. Convert 1J of energy in new system of unit.

    asked on June 17, 2018
  5. math

    Maude uses 3/4 of her allowance to get a massage for 3/5 of an hour. What fraxction of her allowance would she need to get a massage for a full hour?

    asked on March 19, 2018
  6. Algebra

    I need help solving 4 equations step by step. Please help. 5 1. --- (t) = -9 13 X+2 2. 6 = ----- 3 W 3. 13 + --- = -18 7 4. 17 = -13 - 8x

    asked on October 26, 2017
  7. Chemistry

    You have a solution of 0.500 M NaCl. If you add an equal amount of water to this solution, doubling the volume, what is the concentration of this solution?

    asked on October 15, 2017
  8. Chemistry

    The percent composition by mass of an unknown compound with a molecular mass of 60.052 amu is 40.002% C, 6.7135% H, and 53.284% O. Determine the compound's empirical and molecular formulas.

    asked on October 10, 2017
  9. English

    If I understood correctly, does the statement below mean that I must e-mail on Friday, November 5, 2017 but no later than 12 pm to confirm the interview or does it mean that I can e-mail earlier by the deadline, which is 12 pm on Friday, November 5, 2017?

    asked on September 13, 2017
  10. algrebra

    find g^4(x) and the domain and range of g(x) and g^4(x) 1. g(x) = 9 - x^2, x< 0 2. g(x) = (x - 1)^2 +1, x

    asked on September 11, 2017
  11. algebra

    solve the following equation x^2+16=0

    asked on September 11, 2017
  12. biology

    if a rock had a mass of 9.00g, what is the density of the rock?

    asked on July 24, 2017
  13. calculus

    Find the limit. Use l'Hospital's Rule if appropriate. If there is a more elementary method, consider using it. lim x→∞ {(5x − 4)/(5x + 3)}^5x + 1

    asked on March 17, 2017
  14. calculus

    Find the limit. Use l'Hospital's Rule if appropriate. If there is a more elementary method, consider using it. lim x→0 (e^x − e^−x − 2x)/(x − sin(x))

    asked on March 17, 2017
  15. calculus

    Find dy/dx by implicit differentiation. arctan(2x^2y)=x+4xy^2

    asked on March 17, 2017
  16. calculus

    Find y'and y''. y=x^1/2 ln(x)

    asked on March 16, 2017
  17. Physics

    You're using a rope to pull a sled at constant velocity across level snow,with coefficient of kinetic friction 0.050 between sled and the snow. The sled is loaded with physics books, giving a total mass of 23 kg . A) With what force should you pull with

    asked on February 14, 2017
  18. Math

    what is 4+9 to the second power divided by 3x2-2

    asked on February 2, 2017
  19. Math

    use the digits 6 7 8 and 9 to make a problem with the largest product possible

    asked on January 5, 2017
  20. Math

    A sweater costs 15.99. If the sweater is on sale for 1/4 off its price, about how much would you save?

    asked on December 30, 2016
  21. math bus 105

    Calculate (a) interest and maturity value, (b) discount period, (c) bank discount, and (d) proceeds. Assume ordinary interest. (Round answers to nearest hundredths) Date of note Face value Length of note Interest rate Bank discount rate Date of discount

    asked on October 30, 2016
  22. Chemistry

    After mixing 1 g of 60% ee (+)-Kendomycin with 2 g of 80% ee (+)-Kendomycin, what is the ee of the final mixture? I know the answer is 73% ee, but I don't understand how to get to that answer!

    asked on October 11, 2016
  23. chemistry

    A compound contains 74,27%C;7,79%H;12,99%N. Determine the empirical formula. C=12;H=1;N=14;0=16.

    asked on September 28, 2016
  24. chemistry

    Calculate the percentage composition of sulphuric acid if the atomic masses are H=1u, S=32u and 0=16u

    asked on September 28, 2016
  25. maths /science

    A body calling from rest has a velocity of 25m/s at given instant. Calculate 1 the distance the body has fallen 2 the time taken

    asked on September 28, 2016
  26. maths/science

    A body falls from a position of rest at the top of a tall building and attains a velocity of 63.7m/s just before striking the ground. Calculate the time for the body to fall from the top of the building to the ground

    asked on September 28, 2016
  27. maths

    Calculate the velocity of a stone7 seconds after falling from rest of the edge of a high cliff

    asked on September 28, 2016
  28. Clc

    5 more than the product of -2 and the number

    asked on August 27, 2016
  29. Math

    Alice can complete a certain job in 5 hours she had been working on the job for two hours when a friend came along. And helped her finish together they completed the job in 1 hr how long would it take alices friend to complete a job on her own. I have 1

    asked on August 23, 2016
  30. physics

    Can the value of equilibrant be equal to zero? If yes, why?

    asked on April 4, 2016
  31. chemistry

    Suppose that the microwave radiation has a wavelength of 12 cm . How many photons are required to heat 255 mL of coffee from 25.0 ∘C to 62.0 ∘C? Assume that the coffee has the same density, 0.997 g/mL , and specific heat capacity, 4.184 J/(g⋅K) , as

    asked on March 14, 2016
  32. Calculus- Damon, Steve, Reiny

    I forgot to mention that I am trying to find sigma squared.. given that the mean is r and p(x)= (1/r)(e^(-x/r)) on the interval [0,infinity), where r>0.. note: sigma squared= integral sign (-inf, inf) (x-M)^2 p(x) dx i got (r^2 - 2r)^(1/2) for sigma, but

    asked on November 28, 2015
  33. Calculus

    I tried to integrate this: intergral sign with an interval from -inifinity to + infinity function: (x-r)^2 (1/r) (e^(-x/r)) with respect to dx..... I know that Steve set up the u-substitution but I seem to never arrive at an answer... It seems like I keep

    asked on November 28, 2015
  34. Calculus

    How do you integrate (x-r)^2 (1/r) (e^(-x/r)) from the interval negative infinity to positive infinity?

    asked on November 27, 2015
  35. maths

    a bag contains three labelled A,R,C and a box contains 4 cards 1,2,3,5. if cards are picked from the bag and from the box, find the probability of picking on A and a prime number

    asked on November 25, 2015
  36. Calculus

    Calculate μ and σ, where σ is the standard deviation, defined by the following. σ^2 = integral between (−∞,∞) (x-μ)^2 p(x) dx The smaller the value of σ the more tightly clustered are the values of the random variable X about the mean μ. p(x)

    asked on November 22, 2015
  37. Chemistry

    Why does carbonate have a -2 charge and not -1? Why does phosphate have a -3 charge and not -2 or -1? Why does nitrate have a -1 charge and not -2 or -3? My answer: Based on the Lewis structure, these ions need a certain number of electrons in order to be

    asked on November 22, 2015
  38. Chemistry

    Rank the following in order of increasing bond polarity: H-F, H-Br, F-F, Na-Cl. Is it this....? F-F, H-Br, H-F, Na-Cl

    asked on November 22, 2015
  39. Chemistry

    Why does carbonate have a -2 charge and not -1? Why does phosphate have a -3 charge and not -2 or -1? Why does nitrate have a -1 charge and not -2 or -3? My answer: Based on the Lewis structure, these ions need a certain number of electrons in order to be

    asked on November 22, 2015
  40. math

    how much flour will be needed to make 3 pies if using 1 3/4 cups of flour? i need two ways of solving this question please

    asked on November 17, 2015
  41. Chemistry

    How can I tell from a graph of temperature vs. time if a reaction is endothermic or exothermic?

    asked on October 18, 2015
  42. 8th Grade Science

    How do adaptations enable organisms to reduce competion for food and other resources PLEASE ANSWER BY 4 (50 MINS)

    asked on October 18, 2015
  43. Algebra

    Find the linear function with the following properties: f(0)=1 and the slope of f equals -3/2 THANK YOU

    asked on October 10, 2015
  44. Algebra

    The back of Tom's property is a creek. Tom would like to enclose a rectangular area, using the creek as one side and fencing for the other three sides, to create a corral. If there is 100 feet of fencing available, what is the maximum possible area of the

    asked on October 5, 2015
  45. Math 71x

    One cell phone plan allows 200 text messages per month for $20 after which text messages cost $0.04 each. Another cell plan allows 400 text essages per month for $30 each. What would be the minimum text messages that would justify the more expensive plan

    asked on October 1, 2015
  46. Stats

    estimate the probability that a patient has health insurance, if 59% of Americans have private insurance and 25% have government insurance. Estimate the probability that it is private insurance Is this P(A and B) = P(A) x P(B)

    asked on September 27, 2015
  47. Math

    Bob was riding his dune buggy. Part of the time he was riding at 10 mph and the remainder of the time at 14 mph. The total distance traveled was 68 miles and it took him 5 hours. How much time was spent traveling at 10 mph?

    asked on September 27, 2015
  48. Physical Science

    how much energy must be removed from 1 L of water at 25 C and turn it to ice at -10 C?

    asked on September 23, 2015
  49. Chemistry

    When 24.0 cal of heat is added to 18.5 g of aluminum at 19.0 ∘C, what is the final temperature of the aluminum?

    asked on September 14, 2015
  50. science

    a baby pushes a toy across the floor with a force of 5 newtons inertia balanced force unbalanced force velocity

    asked on July 13, 2015
  51. Statistics

    A random sample of 100 cable TV movies contained an average of 3.38 acts of physical violence per program. At the 99% level what is your estimate of the population value? mean = 3.38 s = 0.30 N = 100

    asked on June 14, 2015
  52. Bio

    Why do doctors recommend that people get a flu shot each new flu season? The vaccine wears out over time. The body eliminates the vaccine. The flu virus changes every year. The flu virus becomes immune to the vaccine.

    asked on June 4, 2015
  53. Science

    What do B cells do?

    asked on June 4, 2015
  54. programming

    Using python write a program that does the following: •Create the logic for a program whose main() method prompts a user for 1000 numbers and stores them in a list. •Pass the array to a method that reverses the order of the numbers. •In the main

    asked on April 17, 2015
  55. Programming logic and design

    Using python write a program that does the following: •Create the logic for a program that calculates and displays the amount of money you would have if you invested $3000 at 2.65 percent interest for one year. •Create a separate method to do the

    asked on April 17, 2015
  56. physics

    dahnay carried a box (5,4)m.the box had a mass of 5kg.dahnay says that over 300J of work was done on the box . is dahnay correct?explain the answer.

    asked on March 16, 2015
  57. English

    What is the difference between the denotative and connotative meaning of a word?

    asked on February 2, 2015
  58. Ss help 8th

    Compare and contrast the experiences of the Creeks and Cherokees in Georgia following the War of 1812

    asked on January 31, 2015
  59. SS ANYONE HELP?

    Describe significant events in the social and economic reconstruction of the South. Why are these events significant?

    asked on January 31, 2015
  60. PLEASE HELP CHECK? MS. SUE ANYONE?

    How is this so far? and what else should i add, i need two pages and i have only one done, due today. help? I'm doing like a journalist. I Josephine A. Walker was a slave for Harry Richardson. Every morning I had to serve him, I had to be up by 4am and was

    asked on January 29, 2015
  61. SS

    How is this so far? and what else should i add, i need two pages and i have only one done, due today. help? I Josephine A. Walker was a slave for Harry Richardson. Every morning I had to serve him, I had to be up by 4am and was unable to go to bed till

    asked on January 29, 2015
  62. geography

    What are examples of human adaptation to the environment?

    asked on January 22, 2015
  63. Geography

    What role did the waterways of Europe play in the development of it's economy?

    asked on January 21, 2015
  64. Geography

    How are the landforms of Europe both an advantages and a disadvantage to life in Europe?

    asked on January 21, 2015
  65. Physics

    You are going diving in a pool of fresh water. Your body can only take a total pressure on it of 2.0 atmospheres. How deep can you dive before your body can no longer take the pressure?

    asked on January 2, 2015
  66. physics

    A toy boat has a volume of 0.0005m^3. It has a mass of 450 grams. How much of the boat is under fresh water?

    asked on January 2, 2015
  67. Physics

    A hot air balloon of radius 12 meters has been heated so that the air inside has a density of 1.05 kg/m^3. What can the total load of the balloon be (mass of balloon itself plus cargo) if you need the balloon to accelerate into the air with an acceleration

    asked on January 2, 2015
  68. algebra

    You deposit $3000 in an account earning 7% interest compounded continuously. The amount of money in the account after years is given by A(t)=3000 e^(0.07 t) . How much will you have in the account in 5 years? $ Round your answer to 2 decimal places. How

    asked on November 22, 2014
  69. science

    A swimming pool measures 10m by 7m by 2m calculate the full force exerted by the water against the bottom. What is the pressure at the bottom due to the water?

    asked on November 21, 2014
  70. Accounting

    computer equipment beginning balance is 20,000 working on the adjusted general journal and the scenario is the computer has a 4 year life with no salvage value not sure how to log this

    asked on November 15, 2014
  71. science

    Bill kicks a rock off the top of his apt building it strikes a window across the street 18m away the acceleration of gravity is 9.8m/s if the window is 25m below the position where bill contacted the rock how long was it ini the air

    asked on November 13, 2014
  72. Chemistry 11

    Find the percent composition of a compound containing sodium and chlorine if 24.34g of the compound contains 13.45g of sodium. My work: Molar mass of NaCl: MNa +MCl = 22.99 g/mol + 35.45 g/mol = 58.44 g/mol Percent composition of Na: 22.99 g/mol / 58.44

    asked on November 12, 2014
  73. science-gen chem

    if 0.969 g of CaCl2 is mixed with 1.111 g of KlO3 how many grams of solid Ca(IO3)2 can theoretically be made? CaCl2(aq) + 2KlO3(aq) ===> 2Kcl(aq) + Ca(lO3)2 (s)

    asked on October 27, 2014
  74. math

    If the sun is aplroximantely 1.5×10^(11) meters from Earth, what is the approximate distance from Earth to Mars.

    asked on September 22, 2014
  75. College Chemistry

    Suppose there are two known compounds containing the generic elements X and Y. You have a 1.00-g sample of each compound. One sample contains 0.29 g of X and the other contains 0.38 g of X. Identify plausible sets of formulas for these two compounds. Check

    asked on September 3, 2014
  76. Math

    The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells the dinners at an 80% markup based on cost. They decided

    asked on August 31, 2014
  77. Geography

    Which geographic feature marks the last natural obstacle for Georgia’s rivers on their way to the Atlantic Ocean? (1 point) the Floridian Aquifer the Valley and Ridge region the Fall Line *** (MY ANSWER) the Marshes of Glynn AM I RIGHT?

    asked on August 28, 2014
  78. Geography

    Which of the following are impacts that the temperate climate has had on Georgia’s development? (1 point) encouraging crops with longer growing seasons drawing immigrants from other locations encouraging tourism all of the above 3. What impacts have

    asked on August 25, 2014
  79. Geography

    Which of the following most accurately describes the difference between climate and weather? (1 point) Climate refers to long-terms conditions; weather refers to daily conditions. Climate refers to severe weather events; weather refers to precipitation.

    asked on August 25, 2014
  80. Science

    In the early 1900s, Alfred Wegener noticed that some of the Earth's continents looked like they might fit together like a jigsaw puzzle. He also observed that the continents that looked like they fit together had similar plants, animals, and rock

    asked on August 15, 2014
  81. physics

    Two mirrors are placed at a 90° angle to each other. A light ray strikes one mirror 0.730 m from the intersection of the mirrors with an incident angle of 36.5°. The ray then travels a distance d before reflecting from the second mirror. (a) What is the

    asked on May 12, 2014
  82. general science

    if an object is thrown 60 m into the air and it takes the object 6 s to get there, what's the average speed of the object? (A) 20m/s (B) 360 m/s (C) 100 m/s (D) 10 m/s

    asked on May 5, 2014
  83. Chemistry

    Write the class/family of the following compounds and the functional group in each compound. a. 3-methylcyclohexene b. Cis-3-octene c. 4-methyl-2-heptanone d. 3-bromobenzaldehyde e. 3-bromo-5-chlorotoluene f. 3-chlorophenol g. 6-methyl-2-heptyne Please

    asked on April 22, 2014
  84. Stats

    Find the P-value for a left tailed hypothesis test with a test statistic of z= -1.77. Decide wether to reject the null if the level of significance is alpha= 0.05. Please help I've tried everything and I can't figure out how to get the right answer..

    asked on April 17, 2014
  85. Hanus

    points Q (10,8) and R (24,10) are the endpoints of a diameter of a circle centered at P. Line l is tangent to the circle at S (12,14). What is the y-intercept of line l?

    asked on April 11, 2014
  86. Statistics

    In a survey of 621 males ages 18-64 , 396 say they have gone to the dentist in the past year. Construct 90% and 95% confidence intervals for the proportion. Interpret the results and compare the widths of the confidence intervals. Please show step by step.

    asked on April 7, 2014
  87. Physics

    You are given a four-wheeled cart of mass 11 kg, where the distance between a wheel and its nearest neighbors is 2.1 m. Suppose we load this cart with a crate of mass 109 kg, where the crate's center of mass is located in the back-middle of the cart, 0.525

    asked on April 6, 2014
  88. Physics

    Suppose we take a 1 m long uniform bar and support it at the 27 cm mark. Hanging a 0.31 kg mass on the short end of the beam results in the system being in balance. Find the mass of the beam.

    asked on March 28, 2014
  89. Spanish2

    Está prohibido fumar. (Write advertisements or signs for the situations described. Use impersonal constructions with se.)

    asked on March 17, 2014
  90. pre-calculus

    Find the real and imaginary zeros for the following polynomial function. T(b)= 147b^3-35b^2-19b+3

    asked on March 6, 2014
  91. RE: Physics

    If an incline has a difference in height from one end to the other of 17.8 cm and has a length along the incline of 1.19 m, what is the angle that the incline makes with the horizontal reference surface? Physics - Damon, Saturday, February 15, 2014 at

    asked on February 15, 2014
  92. Physics

    If an incline has a difference in height from one end to the other of 17.8 cm and has a length along the incline of 1.19 m, what is the angle that the incline makes with the horizontal reference surface?

    asked on February 15, 2014
  93. Chem

    what mass of hydrogen was in an unknown compound containing only c, h, and o if 2.65kg H2O was produced by combustion analysis

    asked on February 12, 2014
  94. physics

    In the circuit shown, find the voltage Vx (in Volts) if V = 17.0 Volts, R1 = 13.0 k ohms, R2 = 4.0 k ohms, R3 = 13.0 k ohms and R4 = 21.0 k ohms. Answer is -6.5 I don't understand how they got it, can someone please explain it with steps? Thanks tinypic. c

    asked on February 11, 2014
  95. Physics

    In the circuit shown, find the voltage Vx (in Volts) if V = 17.0 Volts, R1 = 13.0 k ohms, R2 = 4.0 k ohms, R3 = 13.0 k ohms and R4 = 21.0 k ohms. Answer is -6.5 I don't understand how they got it, can someone please explain it with steps? Thanks tinypic. c

    asked on February 11, 2014
  96. Physics

    If the resistances R1= 16. ohms, R2 = 38. ohms, and R3 = 18. ohms, and the voltage V = 6.0 volts, what is the current ix (in Amperes) in the circuit. tinypic .cm /r / nfr48k/ 8 The correct answer is .1443 but I want to know how they got that. Thanks.

    asked on February 10, 2014
  97. science

    You measure the dimensions of a rectangular block of aluminum to determine its volume. It has the following dimensions. length = 10.27 cm; width = 4.92 cm; height = 1.53 cm Assuming that each of these measurements is accurate to the nearest 0.01 cm, find

    asked on February 3, 2014
  98. Science

    The sensitivity of a measuring instrument is the value of the smallest quantity that can be read or estimated with it. What is the smallest part of a centimeter that can be read with the following? (a) a meterstick with markings at each millimeter I tried

    asked on February 3, 2014
  99. Physics

    A test rocket is launched by accelerating it along a 200.0-m incline at 1.25m/s2 starting from rest at point A (the figure (Figure 1) .) The incline rises at 35.0 ∘ above the horizontal, and at the instant the rocket leaves it, its engines turn off and

    asked on February 2, 2014
  100. Physics

    A test rocket is launched by accelerating it along a 200.0-m incline at 1.25m/s2 starting from rest at point A (the figure (Figure 1) .) The incline rises at 35.0 ∘ above the horizontal, and at the instant the rocket leaves it, its engines turn off and

    asked on February 1, 2014

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