Most popular questions and responses by Curt
  1. math

    A school debate team has 4 girls and 6 boys. A total of 4 of the team members will be chosen to participate in the district debate. What is the probability that 2 girls and 2 boys will be selected? A.3/7 B.4/10 C.1/14 D.1/210

    asked on February 28, 2017
  2. Physics

    a 47 kg person in a rollercoaster moving through the bottom of a curved track of radius 47.7 m feels a normal force of 895 n

    asked on June 13, 2019
  3. physics

    An object is thrown vertically up and attains an upward velocity of 10 m/s when it reaches one fourth of its maximum height above its launch point. What was the initial speed of the object? The acceleration of gravity is 9.8 m/s2. Answer in units of m/s

    asked on September 29, 2015
  4. History

    How does the process of quarantine change from the Indians (small pox), Italians (typhoid) to the Chinese (bubonic plague)? Explain.

    asked on November 14, 2011
  5. Math

    A store mixes Brazilian coffee worth $10 per kilogram and Turkish coffee worth $12 per kilogram. The mixture is to sell for $11 per kilogram. Find out how much of each should be used to make a 216 kilogram mixture.

    asked on October 6, 2012
  6. chemistry

    How many atoms of tin are necessary to react completely with 7.42 x 10(24th)g of HF. Sn(s) + 2HF(g) = SnF2(S) + H2 (g)

    asked on December 1, 2012
  7. Algebra

    The vertices of a kite have coordinates (14,2), (10,-4), (6,2), and (10,y). If the kite has an area of 64 square units, what is the value of y?

    asked on March 4, 2012
  8. math

    What happens when the king of breasts run in front of a train?

    asked on June 4, 2010
  9. physical science

    how much current flows through a circuit if the resistence is 4 ohms and there is a 12 volt battery?

    asked on April 3, 2010
  10. 8th grade

    if x=-5, y=4 and z=-3 solve x squared (3x-8y)

    asked on April 20, 2010
  11. Chemistry

    Estimate the value of deltaGf for COCl2(l) at 25 degrees celcius

    asked on April 24, 2017
  12. Lit

    The reasons Mcbeth fels he should not kill Duncan?

    asked on March 20, 2011
  13. algebra

    -6x>1/13 the question is asking me for a solutions set using the multiplication principle

    asked on April 15, 2010
  14. algebra

    2r-9s=-24 9r+2s=62 the quest asks to write a order pair or tell if there is infinitely solutions or no solutions. can you help

    asked on April 15, 2010
  1. College Chemistry

    pH = 3.16 Al(OH)3 + OH^- ==> Al(OH)4-

    posted on March 24, 2014
  2. physics

    the question is a bit ambiguous in not specifying whether line of sight is UP from the horizontal or DOWN. the correct answer could be: h = 85m[tan 38deg + tan 35deg] ...if the observer is in a window of a nearby building or on a hilltop, etc. [many

    posted on July 16, 2012
  3. Business Comm 1

    A good paragraph has unity; that is, it discusses only one idea, or topic. The topic sentence states the main idea and provides a scaffold to structure your document. Your writing will be easier to read if you make the topic sentence explicit and put it at

    posted on July 1, 2011
  4. math

    thank you

    posted on April 15, 2010