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December 22, 2014

Posts by Lexi


Total # Posts: 226

math
10x+5y^2+2xy-4y^2+4xy-x3=
October 30, 2008

Statistics
Problem 2: A random sample of 10 miniature tootsie rolls was taken from a bag, each piece weighed on a very accurate scale. The results in grams were: 3.087 3.131 3.241 3.241 3.27 3.353 3.4 3.411 3.437 3.477 a)construct a 90% confidence interval for the true mean weight. b)...
October 20, 2008

Statistics
I have 2 statistics problems that I've done and felt completely confident with them until I worked the problem a different way and got a different answer. I was wondering if you could tell me if I have the right answers or not. Thanks so much! A certain air plane has 2 ...
October 20, 2008

Statistics
What measurement forms normal distribution? Would it be the mean and variance? (avg. and standard deviation) Could you help me please
October 15, 2008

Statistics
What measurement forms normal distribution?
October 15, 2008

8th Grade Math
Tom was floating down the river on a raft when, 1km lower down, Michael took to the water in a rowing boat. Michael rowed downstream at his fastest pace. Then he turned around and rowed back, arriving at this starting point just as Tom drifted by. If Michael's rowing speed...
September 30, 2008

Maths
In a quadrilateral ABCD, angle A = 120 degrees angle B = 140 degrees The bisectors of the angles C and D meet at the point Y. Find the size of the angle DYC
September 30, 2008

math
The RANGE is the difference between the lowest and highest values. In this case 100 - 80 = 20, so the range is 20. The range tells you something about how spread out the data are. Data with large ranges tend to be more spread out.
September 30, 2008

Maths - Pigeon-hole principle
Using the Pigeon-hole principle... 91 five-digit numbers are written on a blackboard. Prove that one can find three numbers on the blackboard such that the sums of their digits are equal.
September 30, 2008

maths
91 five-digit numbers are written on a blackboard. Prove that one can find three numbers on the blackboard such that the sums of their digits are equal.
September 30, 2008

Maths
When a certain number N is divided by d, the remainder is 7. If the original number N is multiplied by 5 and then divided by d, the remainder is 10. Find d.
September 30, 2008

8th grade math.
i need help with dividing negative numbers. for example :what is -2/-4.
September 8, 2008

respost A&P
Dengue fever and Dengue Hemorrhagic Fever (DHF) "Dengue and dengue hemorrhagic fever (DHF) results from infection by any of four serotypes of dengue viruses. Transmission occurs through the bite of infected Aedes mosquitoes, principally Aedes aegypti, which is also the ...
July 20, 2008

Anatomy and Physiology paper
I have to do a research paper in A&P please check this over for me and lwt me know what you thinks thanks this what needs to be done Select a single medical disorder. Consult resources other than the course textbook and this study guide. Examples of resources include other ...
July 19, 2008

chemistry
This person meant sulfite.
July 1, 2008

math-algebra
sqrt27xy^3/sqrt9x I'm getting 3 answers to this. yxsqrt3y/x, ysqrt3xy/3x, and 3sqrt3y Can anyone please tell me which one is correct?
June 10, 2008

Chemistry
The absorbance values At & A0 recorded in the experiment 'Rate Law Determination of the Crystal Violet Reaction' are used in the place of the concentration values of which species A. CVOH B. CV+ C. –OH D. Na+ E. H2O
May 16, 2008

chemistry
zero and second are right but first is not b, i dont know what it is
May 15, 2008

chemistry
the question is not answered above!! please help!!
May 1, 2008

Chemistry
I think half reactions are redox and Pb has the greatest ability to reduce its neutral metal
April 21, 2008

chemistry
I still don't understand are the reactants on one side of the || and on the other side is products? for the second one there are 2 answers that could possibly work here
April 18, 2008

science
identify three kinds of nerons that are found in the nervos system?describe how they interact to carry nreve impulse?
March 20, 2008

math
I had this same question ;) I guess its already been answered
March 2, 2008

physics
Which truck has more momentum?? 20kg*m/s or 20000kg*m/s??? HELPPP!!!
October 8, 2007

Social Studies
Can you please help me understand what is meant by "democratic spirit"? Thanks
September 30, 2007

Chemistry 1 H
AgNO3+ BaCl2-> AgCl+ Ba(NO3)2 a. balence the equasion b. How many grams of silver chloride(AgCl) are produced from 5.0g of silver nitrate (AgNO3) reacting with an excess of barium chloride(Ba Cl2)? c. How Many grams of barium chloride (BaCl2) is necessary to react with 5.0...
January 4, 2007

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