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August 31, 2014

Posts by greg


Total # Posts: 404

Maths
x/2 + x/4 = 1 the answer is 1 1/3 can you show me the method please thanks in advance :)
October 30, 2009

Statistics
For df = 25, determine the value of A that corresponds to each of the following probabilites: a. P(t >- A)= 0.025 b. P(t <- A)= 0.10 c. P(-A <- t <- A)=0.99
October 3, 2009

science
Hi Ali :)
September 23, 2009

english
how does the text "lord of the flies" relate to journeys?
September 10, 2009

us history
In what ways does the Magna Carta still impact law?
June 24, 2009

Physics
You are told that the volume of a sphere is given by V=(sqrt)d^3/4, where V is the volume and d is the diameter of the sphere. Is this equation dimensionally correct?
June 20, 2009

Physics
Roughly how high could a 305 K copper ball lift itself if it could transform all of its thermal energy into work? Copper has a specific heat of 386J/kg * K measured near room temperature (293 K) and atmospheric pressure.
March 20, 2009

chem
Is this a good way to define crystallization: decreasing the temperature or evaporating the solvent can create crystals?
March 11, 2009

chemistry help
45
March 8, 2009

english
The essay has to be 350 words What I learned in Home School Home school is easer than public school. I am able to learn all the same subject at home as I did in public school. I am also able to learn other things that you are not able to do in public school. History taught me...
February 26, 2009

Math-Factoring
Hey I need help factoring 5x^4-180x^2. I'm used to factoring with three numbers, and not two. How would you do just two like this? Thanks
January 19, 2009

pre-algebra
You want to paint a wall that is 8 3/4 feet high and 11 1/4 feet long. You have a can of paint that will cover 200 square feet with one coat. A. find the area of the wall. b. if you want to apply two coats of paint , do you have enough paint? explain
January 7, 2009

science
a device that uses electicity to a force to move things
January 7, 2009

5th grade math
um so number 2 is -1.667? and 3 and 4 is what i dont understand
January 6, 2009

5th grade math
write the fraction or mixed number as a decimal. 1/5 -5/3 3 4/25 8 5/44
January 6, 2009

Math
Solve this Equasion x=2y 4x+y=12 using the substitution method. Please give solution
December 24, 2008

math
to join a gym your friend pays a one-time fee of $75 and $45 per month for the duration of the membership.Your friend has paid a total of $345.How long has your friend been a member of the gym??
December 10, 2008

6 grade
to join a gym your friend pays a one-time fee of $75 and $45 per month for the duration of the membership.Your friend has paid a total of $345.How long has your friend been a member of the gym??
December 10, 2008

algebra with pizzazzi
Need help why are Mr and Mrs number so happy?
December 5, 2008

help plzzz
this is what i do with all my math work
December 3, 2008

calculus
Consider the function f(x)=12x^5+30x^4–160x^3+5 . f(x) has inflection points at (reading from left to right) x=D , E , and F D= E= F=
November 25, 2008

calculus
f(x)=x^3/(x^2-1) find the regions of concavity and inflection points
November 25, 2008

Math
Describe an application for the use of ratios or proportions
November 22, 2008

7th grade
explain the usefulness of algebra in modern mathematics.
November 9, 2008

physics
Consider the 59 N weight held by two cables The left-hand cable is horizontal. What is the tension in the cable slanted at an angle of 51◦? Answer in units of N. What is the tension in the horizontal cable? Answer in units of N.
November 7, 2008

physics
Consider the 59 N weight held by two cables The left-hand cable is horizontal. What is the tension in the cable slanted at an angle of 51◦? Answer in units of N. What is the tension in the horizontal cable? Answer in units of N.
November 7, 2008

Critical Thinking
THE STATED PREMISE MAKES SENSE, BUT THE CONCLUSION IS STILL VAGUE
September 29, 2008

Math
If the area of the base of a cone is 25 pi square units, express the volume of the cone as a function of its height?
September 11, 2008

Accounting
When the net price method of recording purchases is used, the debit to purchases is for:
August 10, 2008

math-116 final is it a timed test?
It is not a timed test
June 22, 2008

physics
Consider the bending of light by the gravitation of the Sun as described by Newtonian physics. Light of frequency f passes at a distance d from the center of the Sun, which has a mass M. Show that the bending angle of the light is proportional to M/d.
May 28, 2008

Applied Math- Gr.11
A farmer wants to enclose three sides of a rectangular pasture unsing 1000 yards of fencing. The fourth side does not require fencing because it borders a river. What dimensions (length and width) should the farmer choose in order to enclose the greatest area? a) Find at least...
May 1, 2008

physics
Okay the second one is the third answer because something like M(a+g) where m is the weight a is the acceleration and g was 9.8 so I got 844.87 the first one I still cant figure it out.
April 30, 2008

Physics
If an airplane is moving at a constant velocity of 400 m/s for 20 s, what is its acceleration during this period? 0 m/s squared 20 m/s squared 40.82 m/s squared need more information wouldnt it be need more information because isnt acceleration ending velocity minus starting ...
April 29, 2008

spanish
Can you please help me with my spanish homework :? ~.~.~.~.~.~. I did most of it,but I'm stuck on a few,so please help :) ~.~.~.~.~.~. You are a contestant on a game show. The host of the show has given you these answers. Write the corresponding questions 3. El primer ...
April 20, 2008

Social studies
What substance was used to stuff the nostrils?
April 6, 2008

social studies
what is the chemical that was used to embalm the organs?
April 6, 2008

social studies
what are the mummy-shaped figures that worked in the afterlife's fields for the mummy
April 6, 2008

Math
What is the probability that the next cyclone to develop in Australian waters will cross the Qld coast (Apply conditional and total probability). Condition is cyclones that cross the Qld coast are only generated in the south pacific. Cyclones generated in Australian waters is ...
April 4, 2008

chemistry
temperature - as you increase the temperature, the particles speed up... KE = 1/2 mv^2 so an increase in velocity will in turn increase KE.
March 5, 2008

calculator question.. please answer ASAP
you just input the number in the parenthesis, then square the result.
March 5, 2008

PHYSICS!!!
c) w = 110 rev/min a = (alpha)r What equation do I use for getting alpha? Is the angular acceleration constant as well. Do I use the angular acceleration I get for (a) and just multiply it by the radius? How do I get angular acceleration?
March 5, 2008

PHYSICS!!!
The flywheel of a steam engine runs with a constant angular velocity of 220 rev/min. When steam is shut off, the friction of the bearings and of the air stops the wheel in 2.7 h. (a) What is the constant angular acceleration, in revolutions per minute-squared, of the wheel ...
March 5, 2008

physics
The flywheel of a steam engine runs with a constant angular velocity of 220 rev/min. When steam is shut off, the friction of the bearings and of the air stops the wheel in 2.7 h. (a) What is the constant angular acceleration, in revolutions per minute-squared, of the wheel ...
March 5, 2008

PHYSICS
Thanks!
March 1, 2008

PHYSICS
Fig. 6-48 shows a conical pendulum, in which the bob (the small object at the lower end of the cord) moves in a horizontal circle at constant speed. (The cord sweeps out a cone as the bob rotates.) The bob has a mass of 0.038 kg, the string has length L = 1.2 m and negligible ...
March 1, 2008

Long Division of Polynomials
5x^2-17x+3 over x-4
February 11, 2008

can someone proofread this ASAP! Please!
soley...spelled wrong in the decision making...no hyphen Best of themselves in a relationship...no s tiding...spelled wrong
January 14, 2008

geomotry
298.2529
January 7, 2008

Math Analysis
When simplifing 1/a-3 - 1/3-a do I procede by multi. by the recipercal or would I just set them equal to each other.
December 15, 2007

math analysis
how would I simplify: -3i^4
December 15, 2007

pre-Algebra
Write the following as a fraction and show your work. 0.83 (the three is repeating) I don't know how to do it with only one of the numbers repeating and it is not in my book.
December 11, 2007

Math
Solve the simultaneous equation x+y=1 x squared + y squared=25
December 8, 2007

english
d? not 100 on that tho sorry
December 2, 2007

accounting
the question is, Billed client 1800 for cleaning services what two entries to i have to post. im having a blank moment.
December 2, 2007

Am I correct on this question (accounting)
i think the only thing that gets adjusted is the Accumulated Depreciation but im not 100% sure.
December 2, 2007

Crossword Question
this Canadian Act suspends the individual rights of her citizens. what is it???
November 26, 2007

Ionic compounds
Sodium nitrate
November 24, 2007

math
Thanks that kinda but not really helps me.
November 14, 2007

math
This one is kinda hard. "A ballon in the shape of a cylinder with hemispherical ends of the same radius as that of the cylinder is shown. The ballon is being inflated at the rate of 261pi cubic centimeters per minute. At the instant the radius of the cylinder is 3 ...
November 14, 2007

ECON, HELP?!?
Economyst, My prof says only a was right at 100 billion, but b, c, and d were wrong?? I appreciate the help anyway cause she was on vacation. I have posted the answers she got.... 2. The goverment raises taxes by $100 billion. If the marginal propensity to consume is 0.6, what...
October 27, 2007

econ, help???
Economyst, My prof says only a was right at 100 billion, but b, c, and d were wrong?? I appreciate the help anyway cause she was on vacation. I have posted the answers she got.... 2. The goverment raises taxes by $100 billion. If the marginal propensity to consume is 0.6, ...
October 27, 2007

ECON-one was wrong?
My prof says only a was right at 100 billion, but b, c, and d were wrong?? I appreciate the help anyway cause she was on vacation. I have posted the answers she got.... 2. The goverment raises taxes by $100 billion. If the marginal propensity to consume is 0.6, what happens ...
October 26, 2007

ECON
CAN ANYONE PLEASE HELP// 1. In the Country of Wiknam, the velocity of money is constant. Real GDP grows by 5 percent per year, the money stock grows by 14 percent per year, and the nominal interest rate is 11 percent. What is the real interest rate? 2. The goverment raises ...
October 23, 2007

econ-HELP!
CAN ANYONE PLEASE HELP// 1. In the Country of Wiknam, the velocity of money is constant. Real GDP grows by 5 percent per year, the money stock grows by 14 percent per year, and the nominal interest rate is 11 percent. What is the real interest rate? 2. The goverment raises ...
October 23, 2007

ECON-can anyone help
CAN ANYONE PLEASE HELP// 1. In the Country of Wiknam, the velocity of money is constant. Real GDP grows by 5 percent per year, the money stock grows by 14 percent per year, and the nominal interest rate is 11 percent. What is the real interest rate? 2. The goverment raises ...
October 22, 2007

ECON--HELP!!!
I am at work and am sending this on my cell phone.. BEFORE MY EXAM TONIGHT, CAN ANYONE PLEASE HELP// 1. In the Country of Wiknam, the velocity of money is constant. Real GDP grows by 5 percent per year, the money stock grows by 14 percent per year, and the nominal interest ...
October 22, 2007

ECON--HELP!?!?!
Oh shoot, i dont have the text right now---am at work and need to know what thses do for review--PLEASE HELP??
October 21, 2007

ECON--HELP!?!?!
1. In the Country of Wiknam, the velocity of money is constant. Real GDP grows by 5 percent per year, the money stock grows by 14 percent per year, and the nominal interest rate is 11 percent. What is the real interest rate? 2. The goverment raises taxes by $100 billion. If ...
October 21, 2007

econ--HELP!!
THANK YOU, you are GREAT, its a review quest. and i do not have the book.
October 21, 2007

econ--HELP!!
QUESTION Consider an economy described by the following equations: Y=C+I+G Y=500 G=1,000 T=1,000 C=250+0.75(Y-T) I=1,000-50r a.In this economy, compute private saving, public saving, and national saving. b. Find the equilibrium interest rate. c. Now suppose that G rises to 1,...
October 21, 2007

ECON-HELP!!
1. In the Country of Wiknam, the velocity of money is constant. Real GDP grows by 5 percent per year, the money stock grows by 14 percent per year, and the nominal interest rate is 11 percent. What is the real interest rate? 2. The goverment raises taxes by $100 billion. If ...
October 21, 2007

macro
I need help with this question and am a student here. Can you PLEASE show me how to do this?? QUESTION Consider an economy described by the following equations: Y=C+I+G Y=500 G=1,000 T=1,000 C=250+0.75(Y-T) I=1,000-50r a.In this economy, compute private saving, public saving, ...
October 20, 2007

Chemistry
I think the answer is Fe_2S_3 (underscore meaning subscripts). But not sure how the numbers are associated. And why is Iron (II) sulfide = FeS (no subscript)?
October 3, 2007

Chemistry
What is the formula for Iron(III) sulfide? And why?
October 3, 2007

bio science
Any ideas for a simple scientific study? Question, observation, hypothesis, testing, results and conclusion. Needs to be fairly simple and able to be tested an ample amount. Just looking for some ideas right now. If i can incorporate stream health, that would be great.
September 21, 2007

human bones
Im studying a handout on human bones for a quiz. This handout shows the leg bones being Tibia and Fibia. But which is which? Same for ulna and radius please.
September 17, 2007

Economics/ history
Describe the hierachies in monetary value of various monies that existed in the US in 1816. Which monies were most favored and why?
September 12, 2007

math
is that suposed to be quotient of p and 3?
September 10, 2007

social studies
Large areas of blue on a wold map. Artic Ocean Indian Ocean Pacific Ocean Atlantic Ocean
September 10, 2007

geography
Can you see Calais France from the cliffs of Dover?
September 10, 2007

US. History
These new taxes were an atempt for the British to remain in control of the New World. British leaders were scared of the eminant revolt and wanted to keep bussiness in the New world in check. If colonist refused the taxes the British could refuse the goods. The colonists did ...
September 10, 2007

Macro Economics
still do not see a diference in the two answers. It is leading me to surmize that "None of the above" is the correct answer. Possible because true answer would be that demand will decrease. Coffee would take 3 years to increase based on price of today.
September 9, 2007

Macro Economics
I am answering a mutiple choice question and there are two that seem correct. One answer is "Supply will increase" The other is the other is "There will be movement along the supply curve to a higher quantity supplied." What is the diference between these ...
September 9, 2007

Math
How do you factorise -13x^2+113x-22
September 9, 2007

chemistry
New York citys 7.9 million people have a daily per capita consumption of 173 gallons of water. how many tons of sodium flouride would be requred per year to give this watr 1 part flourine per million parts water?
September 3, 2007

math
well - - i dont know this stuff here but o-k here goes my 7th grader needs to get help with this - - 3 grades average 92 so what does tthe 4th one need to be to get an avg of 94 % ?? i ve 4 gotten in my old age - -thank you
August 29, 2007

Math
How do I figure the ratio of one part liquid to eighteen parts water if I am using four gallons of water? Isn't the water liquid also? So all eighteen parts are liquid. 17 parts water= 17/18*4gal= 17/18*16quarts= ... 1 part solute= 1/18*16 quarts= 3.5 cups check my math If...
July 21, 2007

Science
Why can humans not survive on Venus? Thank you for using the Jiskha Homework Help Forum. You will find 2 answers above under "Science." Since the volunteers do not sit here 24/7, a half hour is not long enough to wait for an answer.
June 4, 2007

social sudies
im working on a project about the rivers of japan. can anyone recommend a site? http://en.wikipedia.org/wiki/Category:Rivers_of_Japan thanks a million dude!
May 7, 2007

microeconomics
Given demand curve P=400-.05Q, at what price is total revenue maximized? There are a number of ways to do this problem. Let me use simple calculus. Total Revenue is P*Q=400Q-.05Q^2. Take the first derivitive wrt Q. MR=400-.1Q To maximize, find Q when MR=zero. Q=4000 Plug this ...
May 1, 2007

essay
what is the most important issue facing the global economy? explain the issue in detail and your reasoning for it being so important. I say globalization and someone said that was too broad so I narrowed it down to international trade foreign exports between what countries? ...
April 29, 2007

essay
could I have to write an essay on the question what is the most important issue facing the global economy? explain the issue in detail and your reasoning for it being so important. I chose the topic of globalization. could someone help me figure out a few key points to ...
April 28, 2007

math
The amount of money in an account with continuously compounded interest is given by the formula A = Pert, where P is the principal, r is the annual interest rate, and t is the time in years. Calculate to the hundredth of a year how long it takes for an amount of money to ...
April 22, 2007

Maths
How do I work out the square root of a number? it's simple. - you can use your calculator or use perfect squares to solve one. perfect squares: 4 9 16 25 36 49 etc. Need anything else just ask.
February 9, 2007

The lord of the flies-English
how does the text "lord of the flies" relate to journeys?
November 21, 2006

physics
(Densities of object 1 and 2 are greater than that of the fluid) 1. Object 1 and 2 have same volume and shape, but object 1 is more dense than object 2, which one has greater buoyant force?? 2. object 1 and 2 has same mass, but density of object 1 is greater than object 2(has ...
October 27, 2006

physics
an 6lb object is hanging from a 10lb object which in turn is hanging from a ceiling. need to find tension(T1) of rope from ceiling to 10lb object and tension(T2) from the 10lb object to the 6lb object. please, need assitance in trying to set up the problem. thanks Tension is a...
September 25, 2006

physics
25 gram mass is given an upward acceleration of 30 m/s^2 by a rope. need help finding tension in the rope? not sure how to set up the problem?? Tension is the reaction force. Clearly you have two forces in opposite directions. Let T be the tension in the rope. The net force ...
September 25, 2006

science
25 gram mass is given an upward acceleration of 30 m/s^2 by a rope. need help finding tension in the rope? thank you
September 21, 2006

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