Monday
September 15, 2014

Posts by tim


Total # Posts: 952

soc..
write a essay describing de jure segregation include why was it established , what happen with de jure segregation from reconstruction to the civil rights movement , and how was jim crow enforced throughout this period
November 26, 2011

busi/stats
list 3 ways we can reduce the size of a sample, none of which has any direct relationship to the size of the population
November 22, 2011

busi/stats
The Quality Assurance Department selected a sample of 12 printed circuit boards and tested them. The number of defects in each circuit board was 3, 3, 0, 5, 1, 1, 5, 6, 6, 2, 0, and 1. What kind of control chart should be constructed to monitor the process? A. Mean chart B. ...
November 22, 2011

Spanish 8th grade
I have to put these in the past tense-Are they correct? 1. Tú hablas por teléfono. Tú habaste por teléfono. 2. Nosostros bailamos mucho los fines de semana. This would be the same in past tense, I think?? 3. Tú y yo cantamos los domingos. ...
November 16, 2011

Spanish
Thank you
November 16, 2011

Spanish
Could you please check these-I had to answer the questions. 1.¿Bailaste ayer? Sí,yo bailé ayer. 2.¿Caminaste a la escuela hoy? Sí, yo caminé a la escuela hoy. 3.¿Visitaste a tus primos el domingo pasado? Sí, yo visit&...
November 16, 2011

physics
can some one explain how to do this The muzzle velocity of 60g bullet leaving 4kg rifle is 500 m/s towards the east. What is recoil velocity of the rifle?
November 16, 2011

geometry
if area of triangle wxz is 48 cm squared, x =10 cm, xz = 10 cm, middle =8 cm then what is the perimeter of wxz
November 15, 2011

stats
The Quality Assurance Department selected a sample of 12 printed circuit boards and tested them. The number of defects in each circuit board was 3, 3, 0, 5, 1, 1, 5, 6, 6, 2, 0, and 1. What kind of control chart should be constructed to monitor the process? A. Mean chart B. ...
November 11, 2011

stATS
the standard deviation of the sampling distribution of the means is ____the standard deviation of the population under study.
November 4, 2011

Chemistry 121
Is 450g of oxygen enough to burn 125g of butane according to the following equation? C4H10 + O2 ---> CO2 + H2O? show why or why not?
November 3, 2011

Chemistry 121
How many grams of KCl would be produced from the complete decomposition of 2.75g of KClO3?
November 3, 2011

Chemistry 121
How much oxygen would be needed to completely burn 250g of propane?
November 3, 2011

Calculus
A ship sailing parallel to shore sights a lighthouse at an angle of 12 degrees from its direction of travel. After traveling 5 miles farther, the angle is 22 degrees. At that time, how far is the ship from the lighthouse?
October 23, 2011

chem
Explain clearly why changes in base concentration do not affect the observed reaction rate of an E1 elimination.
October 23, 2011

chemistry
12 mL of 0.0100 M HCl are added to 25.0 mL of a buffer solution that is 0.010 M HC2H3O2 and 0.08 M C2H3O2-. What is the pH of the resulting solution?
October 21, 2011

chemistry-acid/base extraction.
I do not understand acid base extraction. why should we mix, for example, an organic and aqueous compound to then separate them from each other. please explain confused....
October 21, 2011

Algebra
Find the percent of error of each measurement. 0.2cm 0.4cm
October 20, 2011

Algebra
This is soooo confusing! An airplane flies from New Orleans, Louisiana, to Atlanta, Georgia, at an average rate of 320 miles per hour. The airplane then returns at an average rate of 280 miles per hour. The total travel time is 3 hours. A. Define a variable for the flying time...
October 14, 2011

Algebra
Yeah, I did it right! Thank you!!
October 14, 2011

Geography
Following the breakup of the Soviet Union, what are some of the major problems faced by many of the new countries? Thanks.
October 13, 2011

buss/stats
what is it called when all the items in the population have the same chance of being selected for the sample?
October 8, 2011

question
thank you very much
October 5, 2011

question
But critical writing like argumentative essays have structure. (can you tell me what is wrong with this message?)
October 5, 2011

physics
What quantity is given by the gradient of such a graph?
October 2, 2011

Math
Edit...25 balls in the bowl..
October 1, 2011

Math
There are 20 balls in a bowl. 7 black, 6 blue, 5 green, 4 red, and 3 yellow. Balls must be drawn until 4 different colors are drawn. What is the probability that one is black? Please walk me through if you can...
October 1, 2011

math
31
September 30, 2011

Physics 9th grade
no
September 26, 2011

math
On a board game if you landed on red you move ahead 1 space,land on blue you move ahead 2 spaces,and land on orange you move back 1 space. If you took 30 spins where would you expect to land relative to where you started?
September 22, 2011

American Government
In The Declaration of Independence how did they signify the colonists’ relationship to Britain?
September 19, 2011

English
what is John updike`s message in this paragraph? The next morning, I went back to the open vantage from which we had watched the tower so dreadfully slip from sight. The fresh sun shone on the eastward façades, a few boats tentatively moved in the river, the ruins were ...
September 13, 2011

physics
a stone tied at one end of a string of length,l is whirled in a horizontal circle with constant linear speed,v.which of the following expressions describe the relation between the radius of the circle,r and the angle between the string and the vertical axis?
September 11, 2011

social studies
Although the Chesapeake and New England colonies differed in many ways, relations with Native Americans followed a similar course in both regions. Why? What were the biggest factors in relations between the two sides? Did relations change over time and why?
September 10, 2011

social studies
in what ways?
September 10, 2011

social studies
In what ways did English settlement patterns differ according to region and environmental factors?
September 10, 2011

Psychology
Can anyone explain to me what they are trying to ask in this question. What is the difference between the Sympathetic Nervous System response and the HPA Axis in terms of both process and function?
September 8, 2011

buss/stats
Sorry the full question is A loaf of bread is normally distributed with a mean of22 oz. and a standard deviation of 0.5 oz. a, what is the probability that a loaf is btwn 22.75and 23.00? B, 5% of the loafs will weigh less than_____ ounces? C, assuming 200 loaves are baked on a...
September 6, 2011

bussi./stats
what is the probability that a loaf of bread is between 22.75 and 23.00?
September 6, 2011

Math
Write the rectangular equation in polar form. (x – 4)2 + y2 = 16
September 5, 2011

PreCal
Thanks, I am understanding now.
September 5, 2011

bus/stats
a sample of the personal files of eight male employees revealed that, during a six-month period, they lost the following number of days due to illness: 2,0,6,3,10,4,1 and 2. Calculate the standard deviation of the above sample? the means deviation is 2.375? but not sure how to...
September 3, 2011

MATHS
Four points lie in a plane. They are partitioned into two pairs so that the sum of the lengths of the segments joining the points of each pair has the minimal possible value. Prove that these segments have no common points.
September 3, 2011

bus. /stats
Use the data given in the table to construct a frequency distribution and ogive? Before constructing a dam on a Hill river, the Army corps of engineers performed a series of tests to measure the water flow past the proposed location of the dam. The results of the testing were ...
September 3, 2011

buss./stats
a sample of the personal files of eight male employees revealed that during a six month period they lost the following number of days due to illness 2, 0, 6, 3, 10, 4, 1, 2 calculate the standard deviation show your work
September 2, 2011

business and stats
What type of data is the projected return on an investment? Qualitative , continous, attribute,discrete or none of the above
August 31, 2011

Communication
For the following, state the value of the discriminant and then describe the nature of the sloution. -3x^2-8x-19=0
August 2, 2011

English
I need to check my work on diagramming this question. How many players are on a team? I think it should be as follows: How (adverb) many (adjective) players (direct object) are (past tense verb) on (proposition) a (definite article) team (subject of proposition)? Does this ...
August 1, 2011

College algebra
Solve. V^2-6v-16=0
July 31, 2011

Algebra
How do i simplify 3n^2+3n/6n^2+9 by removing factors of 1
July 29, 2011

algebra
10 cm^3 of a normal specimen of human blood contains 1.2 g of hemoglobin. How many grams does 17 cm^3 of the same blood contain?
July 15, 2011

Math
A firecracker is launched straight up, and its height is a function of time, h(t)= -14^2 + 112t, where h is the height in feet and t is the time in seconds with t=0 corresponding to the instant it launches. What is the height 5 seconds after launch? What is the domain of this ...
July 8, 2011

chem
What pressure (atm) is exerted by a column of ethanol 86.0 cm high. The density of ethanol is 0.789 g/cm3 and 9.8 m/s2 as your gravitational constant.
July 6, 2011

PHY
A traveling wave is produced on a rope. The wave travels until it hits a wall and it is reflected. If the speed of the wave is 1.8 m/s and it takes 3.3 s to get back to the starting point, how long (m) is the rope.
July 5, 2011

chem
The average distance between planet X and Earth is about 1.5 x 10^8 miles. How long (minutes would it take pictures transmitted from a space vehicle on Planet X's surface to reach Earth?
July 2, 2011

chem
At 36.4°C a sample of ammonia gas exerts a pressure of 6.8 atm. What is the pressure when the volume of the gas is reduced to one-fourth of the original value at the same temperature
June 29, 2011

mirco-economics
yes
June 25, 2011

mirco-economics
Help In the first case (Total Fixed Cost equal one million: Total variable cost equal $ 4.4M ($ 4M for wages (fifty thousand workers time eighty dollars per worker) plus four hundred thousand other variable inputs. Average variable cost equal twenty two dollars (Total variable...
June 25, 2011

math
is the pair of lines parallel x+2y=7 and 2x+4y=3
June 16, 2011

physics
A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 1.00 m, and the distance from the fulcrum to the load is 0.250 m. What is the mechanical advantage of the lever? What is the ideal mechanical advantage of the lever? What is ...
June 8, 2011

physics
3. A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 1.00 m, and the distance from the fulcrum to the load is 0.250 m. What is the mechanical advantage of the lever? What is the ideal mechanical advantage of the lever? What is...
June 8, 2011

Math
How do i graph the function y^2=x*(x-4)^2. I have no idea where to begin.
May 31, 2011

human resource management
1. Critically evaluate the job analysis that Mary conducted for the position of assistant manager. Has she used appropriate methods? What are the strengths and weaknesses of her efforts? 2. What kind of factors about Today's Fashion and its operations should Mary have ...
May 25, 2011

math
fractions equivalent to 18/24
May 15, 2011

math
Wats 12yds 2ft + 5yds 2ft
May 2, 2011

physics
in terms of ph,explain what would if you happen if you if you mixed vinegar with a solution of ammonia what type of products would form
May 2, 2011

math
if all nos in the equation y/y+101 = 11in base 2, solve for y
April 27, 2011

Compound math
P*(1+i)* Exponent which is time invested $8000x(1+.o62)30 $8000 x ((1 + .062)^30) = $48,621.1794 U.S. dollars
April 19, 2011

physics
What mass (in grams) of steam at 100°C must be mixed with 341 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 57.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, and the latent ...
April 15, 2011

physics
The average rate at which energy is conducted outward through the ground surface in a certain region is 51.6 mW/m2, and the average thermal conductivity of the near-surface rocks is 3.31 W/m·K. Assuming a surface temperature of 11.7°C, find the temperature (in ...
April 14, 2011

math
thanks! i really appreciate this :)
April 10, 2011

math
simplify: 1. a^2b^-3 2. (5/3)^-3 3. (a^2b^0c)^0 4. x^-2y^3 5. 3x^-2 6. n^2/n^-3 please help!!
April 10, 2011

Tech401
How the internet policies of some countries may affect a company's ability to expand globally?
April 9, 2011

mathematics
area is length x width so what times what equals 25? 5
April 7, 2011

chemistry
what is the concentration, in % m/m of a solution prepared from 50.0g sodium chloride and 150.0g of water
April 5, 2011

Math
How would I solve this...I don't get it. Two solutions of an equation are (6,5) and (8,5). What could the equation be?
April 3, 2011

phyiscs
Two persons watch the same object move john says that it accelerate straight downward, but Samantha claims that it falls Along curved path.describe the conditions under which each person would be reporting correctly what they see. Thanks and please please please answer this ...
April 1, 2011

physics urgent
yes mr.pursley
April 1, 2011

physics urgent
an airplane is flying horizontally over ocean at the speed of 200 meters/seconds and at the altiude of 2000 meters.the pilot drops a flare. A. how many second after release does the flare hit the water? b.At what distance from point p,directly under point of release does the ...
April 1, 2011

chemistry
when 52 moles of benzene combine with oxgen, how many moles of carbon dioxide are produced? what else is produced in addtion to the carbon dioxide
March 31, 2011

math
Sa
March 31, 2011

4th grade math
Name the top view, front view, side view of a cone
March 28, 2011

statistics
an average of 0.56 defects per 500 yards. Using the Poisson formula, find the probability that the number of defects in a given 500-yard piece of this fabric will be more than 3
March 22, 2011

early childhood ed
a childs observation of a parent writing a grocery list, his recognition of the coca cola logo, and his leafing through mailbox advertising literature exemplify. answers 1. cultural imprints 2. autonomous language 3. literacy events 4. mastery of decontexualized language my ...
March 20, 2011

geometry
The perimeter of a kite is 24 I'm tring to find the the sides the kite 4cm less than 3 times the length of another
March 17, 2011

Algebra
Find the polynomial function P of the lowest possible degree, having real coefficients, with the given zeros. 3+2i, -2 and 1
March 10, 2011

Liberal Arts Math
what is k(p)= (p+3)(p-7)
March 9, 2011

Chemistry
What is the molarity of CuCl2 solution that completely reacts with 10.0g of zinc , if the volume of the solution is 360mls? Zn(s) + CuCl2(aq) ¨ ZnCl2(aq) + Cu(s) A. 0.42 B. 0.00021 C. 0.21 D. none of these
March 5, 2011

statistics
Five percent of all items sold by a mail-order company are returned by customers for a refund. Find the probability that of two items sold during a given hour by this company both will be returned for a refund
February 28, 2011

statistics
Five percent of all items sold by a mail-order company are returned by customers for a refund. Find the probability that of two items sold during a given hour by this company both will be returned for a refund
February 28, 2011

statistics
an average of 0.56 defects per 500 yards. Using the Poisson formula, find the probability that the number of defects in a given 500-yard piece of this fabric will be more than 3
February 28, 2011

statistics
Five percent of all items sold by a mail-order company are returned by customers for a refund. Find the probability that of two items sold during a given hour by this company both will be returned for a refund
February 28, 2011

math
The altitude of a triangle is increasing at a rate of 3 centimeters/minute while the area of the triangle is increasing at a rate of 7 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 22 centimeters and the area is 66 square ...
February 23, 2011

social studies
how did the spanish differ from the portugese in searching for a route to asia
February 17, 2011

THE AGE OF DISCOVERY TO THE AMERICAN EXPERIMENT
its ur ass
February 16, 2011

math
how much force is need to split a 20" x 20" green hedge log?
February 15, 2011

english
Write one paragraph of at least 200-words explaining what the student could have done differently to avoid the plagiarism concerns raised by the faculty member. How could the use of Plagiarism Checker have helped the student?
February 15, 2011

psychology
what is the design, purpose and the limits of an I.Q test?
February 13, 2011

Physics
A car drove a total 5km. Accelerated 10seconds then had a constant velocity. Entire trip was 45 seconds. Was was the initial acceleration and final velocity?
January 31, 2011

Physics
A car drove a total 5km. Accelerated 10seconds then had a constant velocity. Entire trip was 45 seconds. Was was the initial acceleration and final velocity?
January 31, 2011

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