Tuesday
May 3, 2016

# Posts by ali

Total # Posts: 706

probability
hi! how would you figure out a problem where you are given a probability of success for 12 people and you are trying to find the probability of success for 1 person?
December 8, 2009

criminal justice
why is it important information for the correctional staff to know if the subject have any marks?
December 6, 2009

Algebra
Why does this happen? A=3 and b=2 A+b=c is the equation. Multiplying both sides of the equation makes the equation a^2+2ab+b^2 which is equal to a^2+ab-ac=-ab-b^2+bc Dividing by (a+b-c) we find a=-b or 3=-2 Why?
December 3, 2009

Probability again
A bag contains 5 yellow balls, 5 orange balls, 6 white balls and 6 red balls. Five balls are drawn and NOT replaced each time
November 29, 2009

algebra
thanks!
November 17, 2009

algebra
how would i figure out a problem like: a^2 + b^2 = 5^2 is there a certain method to figure this out?
November 17, 2009

Math
I dot'n know
November 16, 2009

chemistry
The Measured voltage of the cell Pt H2 (1.0atm) H+ // Ag+ (1.0M) Ag ia 1.02 V at 25degrees. Gven E cell is 0.80V, calculate the pH of the solution.
November 2, 2009

economics
(A) “Market demand for wheat is relatively stable over time but market supply of wheat is very much influenced by the weather. For example, a natural drought decreases the supply of wheat and pushes up its prices while a bumper crop can severely depress wheat prices. Acts...
October 31, 2009

Physics
A 15-kilogram block is sliding on a dry, level surface with a coefficient of dry sliding friction of 0.3. The initial speed of hte block is 10/m/sec. How far does the block slide before it stops?
October 15, 2009

chemistry
apply write an expression for the quantity 506,000 cm in which it is clear that all the zeros are significant.
October 4, 2009

math
How did you come up with this answer?
October 3, 2009

social studies
a person who is running away is a
September 30, 2009

science
I've thought of that but I'm not sure if I was right. Thank you so much!
September 23, 2009

science
What changes in diet would allow a growing human population to be supported without any further increase in farmland? Explain your answer. help me please :(
September 23, 2009

science
DDT is stored in body fat and remains toxic for many years. Explain why these characterestics are undersirable in a pesticide. What characteristics would you want in a pesticide to make it less harmful to non-pest organisms?
September 23, 2009

app. math
Given the following data set, which measure of central tendency is the greatest ? {2,4,6,8,10,12}
September 21, 2009

Physics
A helicopter is ascending vertically at the rate of 19.6 m/s. When it is at the height of 156.8 m above the ground a stone is dropped. how long does the stone take to reach the ground?
September 8, 2009

what is the three maining of science
August 25, 2009

physics
"A rod with length L , mass m and resistance R slides without friction down parallel conducting rail of negligible resistance . the rails are connected together at bottom, forming a conducting loop with the rod the plain of the loop makes angle Z wih horizontal , a ...
July 3, 2009

Below is a set of at least two related math/science "words" with their letters combined and arranged in alphabetical order. When you successfully unscramble the letters into the component words, there will be can additional word that should be in the set. That ...
April 10, 2009

Below is a set of at least two related math/science "words" with their letters combined and arranged in alphabetical order. When you successfully unscramble the letters into the component words, there will be can additional word that should be in the set. That ...
April 10, 2009

math
Below is a set of at least two related math/science "words" with their letters combined and arranged in alphabetical order. When you successfully unscramble the letters into the component words, there will be can additional word that should be in the set. That ...
April 10, 2009

Chemistry
How many moles of HNO3 are required to make 250mL of a 2.4M solution? How many grams of KOH are required to make 125mL of a .50M solution?
March 4, 2009

Chemistry
What is the molarity of a solution with 3.5mol of CaCl2 in 1.89L of solution What is the molarity of a solution with 16g of CH3OH in 487mL of solution
March 4, 2009

manegerial econimics
1 JQ sells ties and currently has sales of 1,200 units a month, producing a revenue of £36,000. It competes with KR, who is now considering a price cut of 25%. The PED for JQ is –1.5 and the CED between the two products is 0.8. a) Calculate the effect of KR’s ...
March 1, 2009

managerial economics
1. JQ sells ties and currently has sales of 1,200 units a month, producing a revenue of £36,000. It competes with KR, who is now considering a price cut of 25%. The PED for JQ is –1.5 and the CED between the two products is 0.8. a) Calculate the effect of KR’s ...
March 1, 2009

social studies
what details show that athens developed a system of democracy
February 5, 2009

The transition of the lips where the outer skinner and inner mucous membrane meet is called the _________ I looked it up and from what I read I believe it is the gingivae. Would that be correct. Thank you
February 5, 2009

college Anatomy & Physiology
The transition of the lips where the outer skinner and inner mucous membrane meet is called the _________ I looked it up and from what I read I believe it is the gingivae. Would that be correct. Thank you
February 4, 2009

Math
A new car depreciates an average of 22% in its first year of use. If the car was worth \$16,000 when it was new, what will the car be worth after 1 year?
January 23, 2009

collage algebra 1
what is pi
January 5, 2009

waht is the economy i nt the far northern region of russia based on
December 8, 2008

high school
If F(n) = F(n-1) + (n-1) F(5) = 11 What is F(1)?
November 15, 2008

calculus
Find the area of the largest rectangle with one corner at the origin, the opposite corner in the first quadrant on the graph of the line f(x)=20-5x , and sides parallel to the axes.
November 3, 2008

Math
The question is: The freezing point of helium is -272 degrees celsius. The original temperature of a sample of helium is 3 degrees celsius. a.How much must the temperature change to ensure that helium freezes? -AND- b.Assume the temperature changed at a stedy rate for 25 ...
September 22, 2008

in classification system what does BASIS mean????????
September 21, 2008

us history
thanks so much for your help.
September 18, 2008

us history
What big idea of American government does The House of Burgesses Fall under? Delf Government, Limited government, representative government or common law.
September 18, 2008

us history
How did the House of Burgesses Influence the Founding fathers of the United States when they greated our government?
September 18, 2008

September 16, 2008

words
unscramble cehlmnnouy eefilnpptt eehkossuy ceghlmosty cegghimnuw
September 11, 2008

English
I have to learn drafting
September 9, 2008

Trig
How do you find an equation of a line perpendicular to y=x at the point (5,5) in standard form?
September 7, 2008

Chemistry
the number of moles in 6.2g of sodium oxide
September 6, 2008

Ethnic Diversity
Well, here we go!!Same college, same class. I'm having a real problem with this one. I'm so glad I stumbled across all you guys. Good Luck!!!!This has helped me.
September 2, 2008

math
Given 3x-2y=6, how do i find the area of triangle OPQ? I know I have to graph the equation first but I dont even know how to find the points?
August 28, 2008

hhs 235
Bahrain is a small country in Arabian Gulf, with 1,234,596 inhabitants. Bahrainins divided into two groups Sunni approximately 50% and Shia 42% and the rest are residents from many countries. The Shia starts the demonstrations in 14 Feb 2011 after the succes of Tunisia ...
July 6, 2008

com 150
Identify the topic and three subtopics for your expository essay. · Provide three credible sources from the Internet for your expository essay and cite the sources in APA format. · Address the following question: Which subpoint or subpoints on your mind map do ...
June 29, 2008

Chemistry
What do Na2(CO3)+ Zn(NO3)2 form?
May 18, 2008

science
movement of earth around sun and movement of moon around earth
May 17, 2008

Chemistry
Is it...KNO3+C+S--> N+CO2+KS
May 15, 2008

Chemistry
How do i do that?
May 15, 2008

Chemistry
20.When black gunpowder explodes, potassium nitrate, carbon, and sulfur react with each other to form nitrogen, carbon dioxide, and potassium sulfide. If thee original mixture contains 50.0 g of potassium nitrate, what is the total volume of the gases produced in the reaction...
May 15, 2008

algebra
what do you call it when somebody spends 20 years in the 24th row of a theatre
April 6, 2008

math riddle ALGEBRA WITH PIZZAZZ
omg i just got 3 points extra credit lol!!!
April 6, 2008

Physics
A lunch tray is being held in one hand, as the drawing illustrates. The mass of the tray itself is 0.220 kg, and its center of gravity is located at its geometrical center. On the tray is a 1.00 kg plate of food and a 0.230 kg cup of coffee. Obtain the force T exerted by the ...
April 4, 2008

Physics
A person exerts a horizontal force of F = 179 N in the test apparatus shown in the drawing. (h = 0.35 m.) Find the horizontal force M that his flexor muscle exerts on his forearm. The distance between the fexor muscle and the elbow joinf is .051 m
April 4, 2008

LCD
I need a reveiw on how to use the LCD least common denominator to add and subtract
March 23, 2008

Ethics
some exampls of ethics
March 16, 2008

Biology
What is the effect of substrate concentration on enzyme activity? How does enzyme activity change as substrate concentration decreases? Explain your observations by discussing this reaction on a molecular level.
February 28, 2008

vocabulary
i want vocabulary
February 7, 2008

algebra
local computer center charges non members \$5 per to use the media center. If pay a membership fee of \$25. you pay you S3 per session. Write equation that can help you decide whether a solution. a member Then solve the and interpret the
January 6, 2008

Orbital Dynamics
The zero-velocity value of teh Jacobi integral at the L2 point of the Earth-Moon system is C= -1.59411. Suppose a spacecraft is newar Earth (r2=1/60 in our descriptions). Approximately waht speed must the craft have realtive to the rotating system if it is able to reach the L2...
December 13, 2007

Orbital Dynamics
The zero-velocity value of teh Jacobi integral at the L2 point of the Earth-Moon system is C= -1.59411. Suppose a spacecraft is newar Earth (r2=1/60 in our descriptions). Approximately waht speed must the craft have realtive to the rotating system if it is able to reach the L2...
December 13, 2007

a coin is tossed 8 times. caluclate the problitlty of tossing 6 heads and 2 tails 7 heads and 1 tails and at least 6 heads
November 28, 2007

Chemistry - DrBob222
CaCl2 + NaOH ---> Ca(OH)2 ppt
November 11, 2007

unsramble words
unscramble d c e d w n i
November 4, 2007

My Reading teacher gave it to me to learn steps in a Process
October 24, 2007

Hi My theacher is telling me to do an egg drop project with 16 plastic straws with tape it's due tommorow an I need to finish very quickly PlEASE HELP ME!
October 24, 2007

math
Find a formula for the following functions: x -2 -1 0 1 2 3 4 y 0 3 4 3 0 -5 -12 x -4 -3 -2 -1 0 1 2 3 4 y 25 16 9 4 1 0 1 4 9
October 8, 2007

Calculus!
What is the velocity of an object dropped from a height of 350 m when it hits the ground?
September 21, 2007

French
What is a good site for learning how to speek french for free?
September 20, 2007

Science
What are some similaraties between Vertebrates and Invertabrates
September 20, 2007

Science
What are 5 differences between Vertebrates and Invertabrates
September 20, 2007

Math
1999 starts on Friday, so the first week ends on Thursday. 7 days in a week x 52 weeks in a year = 364 days + 1 + 365 so the year 2000 starts on a Saturday. 2000 starts on Saturday, so the first week ends on Friday. 7 x 52 = 364 + 2 (for leap year) = 366 so the year 2001 ...
September 15, 2007

Math
The year 1999 contains 365 days and begins on Friday. Use deductive reasoning to figure out what day of the week the year 2000 begins on. Show your method. The year 2000 is a leap year; 366 days. What day of the week does 2001 begin on? Show method. How many different ...
September 15, 2007

math
Please write the expanded and word form of 2.089 as well as the fraction form
September 10, 2007

math
Write 2.089 in expanded and word form as well as in a fraction
September 4, 2007

Physics
I have an ice cube :3000 KG,the tempereture is about 50 (cel).would you please let me know how much does it take long for it to change into water ,Hourly Basis ? Regards
August 27, 2007

joiurnal entry
Earnestine Company issued 10,000 shares of common stocks for \$100,000. write the journal entry to record the transaction
August 26, 2007

Chemistry
Describe how you would obtain pure crystals of Sodium chloride from a muxture of solid sodium chloride and solid zinc carbonate Step1 Step 2 Step 3 1. Add HCl to react with the carbonate. The products are zinc chloride, CO2, and water. The CO2 leaves as a gas and the water is ...
April 24, 2007

maths help
Hi MY question is if a cylinder has a volume of 72cm cubed and a cross-sectional area of 18cm squared. Work out the height of the cylinder Can someone show me how we do it by the steps The volume of a cylinder is given by volume = (cross-sectional area) x height so height = ...
April 23, 2007

Maths help
Hi MY question is if a cylinder has a volume of 72cm cubed and a cross-sectional area of 18cm squared. Work out the height of the cylinder Can someone show me how we do it by the steps The cross-section of a cylinder is a circle. so pi(r)^2=18 solve for r let the height be h ...
April 23, 2007

The Crucible (ACT TWO)
at the beginnig of this act, john proctor says, It is winter in here yet." why is this pertinent to what is going on?
March 24, 2007

Anatomy
Our biology class is studying the human skeletal system this month, and I need to find some information on the fone bone for my report. Can anyone help me out? Thank you for using the Jiskha Homework Help Forum. Is some one joking with you? "Fone Bone" is a comic ...
March 20, 2007

science
what determine's the direction that Halley's comet points? The tail points away from the sun.
March 6, 2007

math
3x^2+11x-20=0 (3x -4)(x + 5) = 0 x = 4/3 or -5
January 21, 2007

57/54 = c/18
January 18, 2007

In my bio lab we are creating serial disk dilutions (100mg, 300mg, 500mg) from a plant extraction sample. Wood sample #1 (7mL of hexane) Hexane 0.6651g so .6651g of the plant was dissolved in 7mL of hexane. Then I did dilution calculations so 0.6551g/7 mL = 0.095g/ml so I ...
January 3, 2007

science
I need to find a good site with information about the bacteria Alcaligenes faecalis. I haven't been able to find anything no matter how much I searched, only bits and pieces. Would u know any good sites? http://www.uic.edu/depts/mcmi/faculty/silver/Combined%20Cosmids%20Map...
December 10, 2006

Chem
For germanium atom write: the set of four quantum numbers for the two highest energy electrons in an atom of Ge. If you go to www.webelements.com and click on Ge, then click on the electron configuration (on the left side of the site but you may need to scroll to find it). ...
October 29, 2006

math
3)How mnay subsets of 6 integers taken from the numbers 1,2,3...,20 are there such that there are no consecutive integers in any subset (e.g. if 5 is in the subset then 4 and 6 cannot be in it)? This is a fairly challenging problem, what have you tried so far? There are 20 ...
October 15, 2006

language arts
a metaphor for macaroni salad http://www.tnellen.com/cybereng/lit_terms/terms/2terms.html#Metaphor http://www.tnellen.com/cybereng/lit_terms/metaphor.html http://web.cn.edu/kwheeler/lit_terms_M.html (Scroll down.) Read the definitions and examples. Then write what you think ...
October 11, 2006

English
If there are two independent clauses in a sentance, but one of the already has a comma, then should there be a semicolon before the conjunction? I just got a paper back from my english teacher and this sentance is one he corected: "Though some people believe that the ...
October 10, 2006

Chemistry
Photochemical reations (reactions that use light) are unique. In certain cases, reactions that are more dilute are more rapid than those that are more concentrated. Suggest an explanation for this observation. As the concentration of the photolyzed compound increases, ...
September 23, 2006

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