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November 25, 2014

Posts by help


Total # Posts: 948

Math help please!!!
edit: should be 3p^2q(1+3q-4q^2)
May 20, 2010

Math help please!!!
Factor completely 3p^2q + 9p^2q^2 - 12p^2q^3 I have done the following: 3p^2q(1+3q-4q^) but then i get stuck..not sure if that's the final answer..
May 20, 2010

economic
Rational people think at the margin that is one of the principle that I pickplay a major role out so can you provide an example for each about decision making interaction and the working of the economy.Explaine how that influences the marginal benefits and marginal costs ...
May 14, 2010

economic
which of the 10 principle do you think play a major role in your decision Provide an example for each about decision making interaction and the working of the economy.Explain how that influences the marginal benefits and marginal costs associated with the decision to purchase ...
May 14, 2010

Math
Use mathematical induction to prove that 5^(n) - 1 is divisible by four for all natural numbers n. Hint: if a number is divisible by 4, then it has a factor of 4. also, -1 = -5 +4 This is a take home test so I don't want the answer because I want to know how to do it. this...
May 12, 2010

math
1)In the figure, the vertices of right-angled isosceles triangle ABC are A, B(2,0) and C(8,0) respectively. find the equations of AB and AC 2)If the x-intercept and y-intercept of the straight line L: B(y-2) =Ax+8 are -8 and 3 respectively, find a)the value of A and B b)the ...
May 11, 2010

math: not sure how to figure out
Suppose a coin is biased so that it has the probilities below for landing on heads or tails on a single toss of the coin. P(h)=0.5020 P(t)=0.4980 If this coin is tossed twice find the probability P(hh)
May 6, 2010

Chemistry
The vapor pressure of nitrogen at several different temperatures is shown below. Temperature Pressure () 65 130.5 70 289.5 75 570.8 80 1028 85 1718 Use the data to determine the heat of vaporization of nitrogen. Determine the normal boiling point of nitrogen.
April 29, 2010

chem
Can someone help me I need to find out how to solve the following equation What is the PH/POH of a .0727m H3O+ Solution at 25 degrees c
April 28, 2010

Chem
The density of an unknown metal is 8.94 g/cm^3 and its atomic radius is 0.126 nm . It has a face-centered cubic lattice. Find the atomic weight of the unknown metal.
April 28, 2010

chem
Why are titrations using permanganate performed in acid solution?
April 28, 2010

chem
Why are titrations using permanganate performed in acid solution?
April 28, 2010

chem
Why are titrations using permanganate performed in acid solution?
April 28, 2010

chemistry
hmmmm this doesn't seem to help
April 23, 2010

chemistry
If this "point" for a particular titration occurs at pH x, a good indicator for for the titration would be indicator. Note: Provide only 1 indicator name (even if there are other indicators possible) and make sure the spelling is correct. X indicator 0.9
April 23, 2010

Chemistry
45.0 ml of 9.0x10 the negative 2m hno3 I am needing the steps to help solve the above chem equation
April 20, 2010

chemistry
If the stockroom fails to dry the KHP to remove the waters of hydration, the student's calculated concentration for the standardized base will be (low, high, or unaffected) A drop of NaOH is hanging from the buret tip before the titration of KHP. Once the student begins ...
April 18, 2010

Chemistry
question from my previous post answered by DrBob - is this because this acts as a polyprotic acid, or because the ratio in the Henderson Hasselbach for HA/A- remains the same?
April 13, 2010

Chemistry
is this because this acts as a polyprotic acid, or because the ratio in the Henderson Hasselbach for HA/A- remains the same?
April 13, 2010

Chemistry
How would the pH differ for a 0.1M solution of NaHCO3 vs 0.2M NaHCO3 - remain the same, double, half,or can't be calculated without Ka or Kb?
April 13, 2010

math
According to the Journal of Irreproducible Results, any obtuse angle is a right angle! Here is their argument. Given the obtuse angle x, we make a quadrilateral ABCD with  DAB = x, and  ABC = 90◦, andAD = BC. Say the perpendicular bisector toDC meets the ...
April 1, 2010

math
According to the Journal of Irreproducible Results, any obtuse angle is a right angle! Here is their argument.
April 1, 2010

math
Show that there are no positive integers n for which n4 + 2n3 + 2n2 + 2n + 1 is a perfect square. Are there any positive integers n for which n4 +n3 +n2 +n+1 is a perfect square? If so, find all such n.
April 1, 2010

Chemistry
Why is it important to use liquids with relatively lower boiling points when using the Dumas method?
April 1, 2010

Chemistry
How do you know that the NaCl has 100 ml. How much volume does the water which is also a product have?
April 1, 2010

Chemistry
How do you determine the moles of just NaCl? and is the moles of HCl and NaOH just the molar mass? Thanks
April 1, 2010

MAth
f(x)=x^2-9x+3
March 28, 2010

MAth
f(x)=x^2-9x+9
March 28, 2010

History
WHy ere the women in ancient egypt better off than the women in ancient greece? THANKS, HELP
March 18, 2010

Chemistry
Problem: In a first order decomposition reaction, 50% of a compound decomposes in 10.5 minutes. What is the rate constant of the reaction? The solution my professor gave says: k = .693 / 10.5min Where did the .693 come from? Thanks
March 15, 2010

college STATISTICS
Sample of 80 people randomly asked in casino shows that average lost per person is $160 with a standard deviation ó = $40. Based on this data create a 99% confidence interval for population mean. Does loss of $180 for single person contradict expectation? Explain your ...
March 7, 2010

Math
An urn contains 4 green, 6 blue and 10 yellow chips. You pay $5 to draw a chip from the urn. Here are the rules of the game: if you draw a green chip, the dealer returns you your bet and gives you an additional $5. if you draw a blue chip, the dealer returns you your bet and ...
March 7, 2010

Physics
An army of armadillios is attacking Cosine Castle where the coyotes reside. If an army must clear the 45 meter walls by 5 meters, at what angle must they set their cannons (from the horizontal) in order to fire inside the castle walls? The cannons fire cannonballs at 50 m/s. ...
February 13, 2010

Business
thnx:D
January 30, 2010

Business
Make sure to identify: • Your expectation of use of research by you in the workplace (ie: user, researcher, contributor) May i knoe what this quesiton is asking!!! thnx
January 30, 2010

english!
THNX.:D
January 29, 2010

english!
Write a short analysis of the use of researching in your future industry – how do they gather or use research ie: types of projects, proposals, etc… -can u explain this question to me plz. are they asking me to write a paragraph explaing how do they do research adn ...
January 29, 2010

Math
a) What is Agnessa's hourly rate of pay in a year with 26 biweekly paydays? b) Using your hourly rate computed in part a), what would Agnessa's gross earnings be for a pay period working an extra 10 hours overtime paid 1.50 times the regular rate of pay? (should be ...
January 29, 2010

7th grade math
can you help me ms.sue
January 28, 2010

math
plzzzzzzzzzzzzzz help me
January 28, 2010

math
tim and jim shared 35$ in the ratio 4:3 .how much did tim get ?
January 28, 2010

math
amy sloved 3/5 of her math problems and had 24 left to do. how many problmes did she solve ?
January 28, 2010

science
thank you so much for helping me.
January 28, 2010

5th Grade Science
oko;
January 28, 2010

Earth Science
Which of the following help create volcanoes? plate tectonics landslides cracks in Earth's crust built up magma
January 28, 2010

Physics
A merry-go-round accelerates from est at .870 rad/sec^2. When the merry-go-round has made 4 complete revolutions, how much time has elapsed since the merry-go round started? What is the angular velocity of the merry-go round? Could someone help, please
January 27, 2010

6th grade math
you dont know that we are learning that in 5th grade
January 26, 2010

Physics
Starting from rest Maria pulls horizontally on her new wagon for 1.1 seconds. She exerts a constant force of 89N against a frictional force of 43N. The wagon's final velocity is 3.2m/s. If she is on a level ground, how much does the wagon weigh?
January 26, 2010

Math 117
it takes 4 hr for 8 cook to prepare a dinner. how long would it take for 7 cooks? inverse or direct variation?
January 25, 2010

Algebra 2
2. Biologists want to set up a station to test alligators in the lake for West Nile Virus. Suppose that the costs for such a station are $2,500 for setup costs and $3.00 to administer each test. a. Write an expression that gives the total cost to test x animals.
January 25, 2010

algebra
5+5x<40
January 24, 2010

algebra
im not good at algebra is it 4
January 24, 2010

algebra
8x-(4x+6)=2 the solution is x=
January 24, 2010

algebra
0.4x+4<0.8x-7 the < has a line under it im supposed to put a inequality symbol and the rest of the answer
January 24, 2010

algebra
so the answer this whole time is 6?
January 24, 2010

algebra
a+b for a=34 and b=2 ____ 6 a+b= ______ 6 i dont get this
January 24, 2010

algebra
is there a solution to this promblem? 9x+3y=-60 -9+y=76 help please??
January 17, 2010

acc/220
Write a 350- to 700-word paper describing a balance sheet, an income statement, a retained earnings statement, and a statement of cash flows. How does a company use these financial statements to make future business decisions? Use and define the following terms in your paper ...
January 1, 2010

physics
An analyzer is rotated about an incident ray. The intensity of light is found to increase and decrease, but it does not become zero at any point. The incident light is: a.partially polarized b.plane-polarized c.polarized in two planes d.unpolarized
December 16, 2009

math
How many 2s are there in 7
December 13, 2009

algrebra
10-3y-7y<30 the solution set is {y/y>= } i dunno how to do this?
December 6, 2009

HELP
So I do I find the phase shift based off this?
December 3, 2009

fallacies
Need help with two questions 8. From a letter to the editor: “The counties of Michigan clearly need the ability to raise additional sources of revenue, not only to meet the demands of growth but also to maintain existing levels of service. For without these sources those ...
November 24, 2009

algebra
im not to good at algebra so here goes im supposed to multiply 5.(3.2) i know im supposed to multiply both sides by 5 but be on that im not sure what to do help please?
November 22, 2009

physical science 8th grade
Copper has 2 known isotopes: ^63CU atomic mass= 62.9298 and ^65 CU atomic mass=64.9278. The average atomic mass of copper is 63.546 amu. Calculate the fraction(percent) of each of the 2 isotopes of copper
November 4, 2009

algebra
1 - 11 its supposed be like that
November 1, 2009

algebra
-4x>1 - 11 typeb an inequslity or fraction
November 1, 2009

algebra
would it be 6.10 p.m.
November 1, 2009

algebra
heres a bad one i cant get trains A and B are travling in the same direction on a parrallel track train A is travling at 100 mph and train B is travling 104 mph train A passes a station at 5:10 p.m. if train B passes the same station at 5:40 p.m. at what time will train B ...
November 1, 2009

algebra
i have to find the slope and the y intercept i dont no how to do slopes f (x)=-5x-2 the slope is the y intercept is(0, )
November 1, 2009

business
I have to write a paper on a detail dealing with a problem in a medical supply office. 10 years ago Liz Jakowski promote me to office manager. I manage two employees: jack snyder and ruth disselkoen. My office provide office support for members of the executive team. Two years...
November 1, 2009

algebra
y=x-4 x+y=14 x+(x-4)=14 x+x-4=14 2x=18x x=9 check answer x+(x-4)=14 9+9-4=14 18-4=14 14=14 so 9 is your correct answer
November 1, 2009

Calculus
So how come we can not say that x can not equal 3 because I'm getting 8 when x = 3 also how come we say range is all reals when its not because y will never equal 1
October 31, 2009

Calculus
...every number except 1?
October 31, 2009

Calculus
so the range is... y is... arg confused
October 31, 2009

Calculus
oh... I did it right graph it if you don't believe me
October 31, 2009

Calculus
1 + 0 ------------- 1 - 0 I'm just getting 1????
October 31, 2009

Calculus
wait what am I doing wrong here (X+5)/(X - 3) (x+5)/x -------- (x-3)/x (1+5/X) -------- (1-3/x) i forgot were to go from here
October 31, 2009

Calculus
no... also all reals is wrong because i know you can never get a value greater than -5/3
October 31, 2009

HELP
I'm sure i did it right
October 31, 2009

english
please could someone tell me if my essay is ok.
October 31, 2009

7th grade
^^ i wwant to ask about... 1,000,000; base 10
October 23, 2009

Math
How do i change these into y=? 3x – 2y = –1 --> -2y= -1-3x 5x + 2y = 25 --> 2y= 25-5x
October 19, 2009

Math
Solve v/9 - v/ 21 +1/9 Answer is 0 Is this right
October 18, 2009

Math
Thank you I forgo about checking the answer
October 17, 2009

Math
the speed of train A is 16 mph slower than the speed of train B. Train A travels 210 miles in the same time it takes train B to travel 290 miles. Find the speed of each train. Train A = 58 mph Train B = 74 mph Can you tell me if this is right
October 17, 2009

Math
Thank you
October 17, 2009

Math
The problem is (14ac)-a^2-2ac+b^2) I need to subtract by removing a factor of 1 when possible the answer that I got is -a^2+16ac+b^2 can anyone tell me if this is right and if not can you help me solve
October 17, 2009

MATH
How many three-letter code symbols can be formed from the letters A, C, K, L , and M without repetition?
October 17, 2009

Math
I can not figure out the next step can someone help (x+3)*4+(x-3)*3=-5x 4x+12+3x-9=-5x 7x-3=-5x
October 15, 2009

English
I have an essay exam tomorrow, please can someone help me get some ideas about symbolic violence and how it effects men. I need it as soon as possible; because i have no idea about anything. Please someone help me!!!
October 12, 2009

writing
i have an essay exam tomorrow, please can someone help me get some ideas about symbolic violence and how it effects men. I need it as soon as possible; because i have no idea about anything. Please someone help me!!!
October 12, 2009

Physics
thanks that helps. so how would you solve it for the other listed values?
October 7, 2009

Physics
do you know which equation to use? i have no idea what to do!
October 7, 2009

Physics
Write a projectile motion problem with the initial condition vi=15 m/s at 50° above the horizontal. Solve this problem for ∆x, max height, and time of flight.
October 7, 2009

science
so they're near around trees and water? is that right
October 5, 2009

science
can anyone help me answer this question or give me websites can someone tell what is the shield volcano environment like in or around the volcano. please help and thank you
October 5, 2009

math117
Can you divide using the foil effect the answer I got then is 8x^2-17x-9
October 3, 2009

math117
Multiply (1-x)(9-8x) the answer that I came up with is (x-1)(x-8) can some help me and if I am wrong help me to solve
October 3, 2009

physics
Cars A and B are racing each other along a straight path in following manner: Car A has head start and is a distance dA beyond starting line at t=0. The starting line is at x=o. Car A travels at constant speed vA. Car B starts at starting line but has better engine than car A ...
September 27, 2009

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