Tuesday

May 3, 2016
Total # Posts: 3,091

**Chemistry**

Use de Broglie's relationship to determine the wavelength of carbon atom moving at 2.3 x 10^5 m/s.(Hint: First determine the mass in kg of one move of carbon atoms)
*October 3, 2010*

**biology**

k so the answer would b 22 degrees????
*October 3, 2010*

**biology**

the index of refraction of h2o is 1.33. find the angle of refraction of a beam of light in air hitting the h2o surface at an angle of 60 degrees n(air)=1.00
*October 3, 2010*

**Organic Chemistry**

Design a flowchart for the separation of a mixture that contains toluic acid, p-bromo-aniline, and anthracene. Whenever a reaction occurs, write the reaction completely.
*October 3, 2010*

**Math**

To find the x-intercept, let y=0 and solve for x. Therefore, 0=2x-1 ---> x=1/2 To find the y-intercept, let x=0 instead. y=2(0)-1 ---> y=-1 From here, you plot the points (1/2,0) and (0,-1) on the graph.
*October 2, 2010*

**Chemistry**

12545
*September 29, 2010*

**read and write**

Meaning: Without emotion; in a stoic manner
*September 28, 2010*

**MATH**

sorry for all the dots they werent nessary but thats how it shows in my math book
*September 28, 2010*

**MATH**

1 6x+7=25;3 2 22-5c=8;3 3 b\4-7=1;36 4 7a+4_>20;2.7 ps. the arrow is suppose to be on top of the line. 5 4y-3.12;4 6 m\3+14<33;9 I NEED THE ANSWERS PLEASE CAN ANYBODY HELP ME FAST .
*September 28, 2010*

**math**

thats my cousin keila and we both in 9th grade and need help but me and her have diffrent questions ?
*September 28, 2010*

**MATH **

huh?
*September 28, 2010*

**math**

the sum of 7 and three a number b is at least 12 ?
*September 28, 2010*

**college chemistry**

Please identify the net ionic equation for Na3PO4 +ZnSO4=Zn3(PO4)2+ Na2SO4
*September 27, 2010*

**medicine**

A cat with a gastrotomy tube must receive 300 kcal daily. A 15 oz can of food has 1500 kcal. The food must be diluted with water 50:50 so that it is thin enough to fit through the tube. A maximum amount of 45 ml can be given at each feeding. How many feedings does the cat need...
*September 23, 2010*

**medicine**

50 ml of a solution of 50% dextrose is added to a liter of 0.45% NaCl with 2.5% dextrose to yield a solution with a final dextrose concentration of what percent
*September 23, 2010*

**Critical Reading**

metaphore for obstacles
*September 23, 2010*

**geometry**

if ef=2x-19, fg=3x-16, and eg=25, find the values of x, EF, and FG
*September 22, 2010*

**math**

in music what does allegro mean?
*September 22, 2010*

**Math**

what the is the answer of this question i just want to know
*September 22, 2010*

**algebra**

Can you please explain how to solve this? How far an airplane would fly in 3h if its speed is 800km/h
*September 21, 2010*

**Calculus**

Determine how much time, to the nearest tenth of a year, is required for an investment to triple in value if interest is earned at the rate of 3.5% compounded continuously. (use A=Pe^rt
*September 20, 2010*

**medicine**

A 8 lb rabbit needs 300ug/kg of a 1% solution. How many ml should be given
*September 20, 2010*

**medicine**

A small bird needs 100mg/kg of antibiotic IM. The bird weighs 80g and the concentration of antibiotic is 100mg/ml. How many ml need to be given
*September 20, 2010*

**medicine**

The concentration of Lasix is 5%. How many milligrams are in 0.5ml?
*September 20, 2010*

**medicine**

A cat on IV fluids must receive 30ml/hr of saline. The drip set provides 60gtt/ml. How many gtt/sec should the drip be?
*September 20, 2010*

**medicine**

I don't know it never said in the problem.
*September 18, 2010*

**medicine**

How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution?
*September 18, 2010*

**math**

How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution?
*September 18, 2010*

**Math**

How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution?
*September 18, 2010*

**Algebra 2**

Can you help me set these up? 1.When 0.5cm was planed off each of the six faces of a wooden cube, its volume decreased by 169cm^3. Find its new volume. 2. The width, length, and diagonal of a rectangle are consecutive even integers. Find the integers
*September 16, 2010*

**Algebra 2**

The hypotenuse of a right triangle is 25m long. The length of one leg is 10m less than twice the other. Find the length of each leg. Can you tell me how to set this up? I can do the math from there.
*September 16, 2010*

**Algebra 2**

how do i factor: (p+q)^3 - (p-q)^3
*September 16, 2010*

**we the people**

For my homework i was given this: find an example when each of the 3 branches of the national government has checked one of the other 2. i cant find anything on the internet
*September 12, 2010*

**Geometry**

211
*September 11, 2010*

**algebra**

(2-x)/(2x+6)+ x/(x^2-9) Can some one please help solve this one because I stuck? I don't know how to sole this, so please somebody help!!
*September 11, 2010*

**8th grade Math**

how do you convert .833333333333....... into a fraction
*September 9, 2010*

**Economics**

The role of an assumption in an economic theory is to: a. add realism b. prove the theory c. cover special cases d. simplify the theory
*September 8, 2010*

**algebra**

on one day the value of $1.00 was equal to 0.77 euro or $1.24 Canadian. Write a function to represent the value of Canadian dollars in euros. What is the value of th efunctoin for an input of 5 rounded to the nearest cent, and what does it represent
*September 8, 2010*

**Algebra II/ Pre Calc**

ln(12+x)= It is not (ln 12)(ln x) or (ln12x)
*September 6, 2010*

**algebra**

(a minus sqrtx)^2=25 I have no idea of how to work this problem where i in up with the answers of a=7,-3. Basiclly I just gave it a guess. Could someone show the steps I need to take. Thanks.
*September 5, 2010*

**algebra**

1/x^2+5/x=4 Can someone please help me with this problem by showing the steps that I would have to do to get the answer? I have no idea how to do this. Please help somebody.
*September 4, 2010*

**algebra**

(5/x)+1=9-x
*September 4, 2010*

**algebra**

I don't understand how to do this, so please help. Could you show the steps , so I can try it own my ow to see if I can get it.Thank you. 2SQRT4t^9z^2.
*September 3, 2010*

**algebra homework**

2sqrt x+1-1=6-x I really need some help because I am so lost,so can someone please help me?
*September 2, 2010*

**Geometry**

Suppose B is the midpoint of AC. AB = 5x and BC = 3x + 4. Find AB.
*August 31, 2010*

**Algebra 2**

A photocopying machine purchased new for $4500 loses $900 in value a each year. a. Find the book value of the machine after 18 months. b. When will the book value be $1200? Assume that each situation can be decribed as a linear equation HELP!!! I don't know how to set this...
*August 31, 2010*

**History**

what commercial arrangements did american shippers and traders want after the war had ended?why did they feel that this was needed, & how successful were they in accomplishing thier aims?
*August 30, 2010*

**Algebra 2**

Let f(x)=x^2 - 1 and g(x)=1 - 2x. Find the indicated values. 1. g(1/f(3)) 2. f(x + h) - f(x) all over h
*August 29, 2010*

**math**

x/3+2=x/6 In solving this problem do I divide 3 from both sides are what. I am a bit lost. please show me the steps so I can see if I am right or wrong in my calculations. Thanks you in advance.
*August 27, 2010*

**math**

2+5=7 and 9-5=4 in order to do this mentaly you take the 4 and out a one in front of it. Can u do it from there?
*August 26, 2010*

**Alg 2**

Yes but 2•3 does not equal 8 it equals 6
*August 26, 2010*

**Alg 2**

Complete the equation for te function picturEd in each mapping diagram. The domain is 1,2,3,4 and the range is 2,4,8,16. The equation is a number times X what's the equation. The book says that the answer is 2x but I don't know how they got that. Please help me anyone...
*August 26, 2010*

**math**

Israel. Dead March
*August 26, 2010*

**math**

A certain medicine is given in an amount proportional to a patient’s body weight. Suppose that a patient weighing 100 pounds requires 125 milligrams of medicine. What is the weight of a patient who requires 200 milligrams of this medicine? I am totally lost on how to work...
*August 24, 2010*

**math**

How much more money would I have if I invested $14,000.00 for 8 years at 6.4% in an account that compounded annually rather than in an account that just earned simple interest? Why is this?
*August 23, 2010*

**math**

why it is not possible for a right triangle to have the following three sides: 12 feet, 18 feet, and 14 feet. I need help because I am confuse. Thanks in advance.
*August 23, 2010*

**Algebra 2**

HELP!!! 1. Having a x-intercept of -4 and parallel to the y-axis. How do i write this equation in standard form?
*August 19, 2010*

**The elements and Principles of Design**

These were all wrong and I just took the test the only correct ones were #2,3,14,18 I made a 25% Thanks A Lot
*August 19, 2010*

**home inspection**

The most logical answer is probably D, because A and B are ridiculous and C could be an answer to the situation in life. But the books answer is most likely D.
*August 17, 2010*

**Algebra 2**

how do i do these problems???? Graph each pair of equations in the same coordinate plane. Find the coordinates of the point where the graphs intersect. Then show by substitution that the coordinate satisfy both equations. 1. 2x + 5=0 2x + y=8 Graph each equation 2. y=|x| HELP...
*August 17, 2010*

**Algebra 2**

Is this right? k(2) + 2 = -k(2) + 2 4k = 0 k = 0
*August 17, 2010*

**Algebra 2**

Find the value of K so that the point P lies on the line L. 1. P(2,1), L: 3x + Ky = 8 2. P(2,2), L: Kx + (K + 1)y = 2 Help me i have no idea how to do this! :[
*August 17, 2010*

**uno**

You decide to borrow $200,000 to build a new house. The bank charges an interest rate of 6% compounded monthly. If you pay the loan back over 30 years, what will your monthly payment be [rounded to the nearest dollar]?
*August 16, 2010*

**Math**

A cubic model of the yearly worldwide carbon emissions is W=-0.051x3 + 2.93x2 + 74.6x + 1589 where W is the weight of the emissions in millions of tons and x is the number of years since 1950. Use synthetic division to evaluate the model for the year 1960.
*August 15, 2010*

**Bus 219**

thank you so much that really helped me out a lot. I understand it much better now.
*August 13, 2010*

**Bus 219**

CheckPoint: The Information Systems Department „FƒnReview Ch. 2 in the text. „FƒnSelect two organizational departments in a business. „FƒnWrite a paragraph of at least 200 words in which you identify the roles of information systems within those ...
*August 13, 2010*

**Bus 219**

Write a paragraph of at least 200 words in which you identify the roles of information systems within those departments. does this mean transaction processing system and other things along this line or something else? I am so confused any help will be great thank you.
*August 13, 2010*

**College Alegbra**

(b-1/a)/(b^2+2/a^2 )
*August 13, 2010*

**Algebra**

Magazine sales. Henry sold 120 magazine subscriptions in x days. a) Write a rational expression for the rate at which he sold the subscriptions. b) Suppose that he continues to sell at the same rate for 5 more days. Write a rational expression for the number of magazines sold ...
*August 11, 2010*

**Algebra**

Thank you for your help
*August 11, 2010*

**Algebra**

I have this math probelm z-(3z)/(2-z)=(6)/(z-2) in my book it says to solve the equation. I have worked this problem many times and I keep comming up with different answers. When I use an online calculator to check my work it is giving me an answer of z=-3 I have not gotten ...
*August 11, 2010*

**Algebra**

first identify your a,b and c.don't forget the signs.then simply substitute in the formula which is; x=-b plus or minus square root of b^2 - 4ac,everything over 2a.btw the root is for everthing execpt the -b and 2a
*August 9, 2010*

**College Alegbra**

Find the sum of the infinite geometric series given by ∑_(k=1)^∞▒〖(2/9)^k.〗
*August 9, 2010*

**College Alegbra**

15. Write the 5th term of (3x + 2y)7.
*August 9, 2010*

**College Alegbra**

Write the binomial expansion of (x^2+2/x)^5.
*August 9, 2010*

**College Alegbra**

Prove by mathematical induction: ∑_(i=1)^n▒〖3^i=3(3^n-1)/2〗
*August 9, 2010*

**College Alegbra**

13. Write the binomial expansion of (2a – 3b)4.
*August 9, 2010*

**algebra**

Solve. Type an integer or simplified fraction for: -7x -22 = -26 2/3
*August 9, 2010*

**College Algebra**

for what real number k does 3x^2-k factor as 3(x-2)(x+2)
*August 6, 2010*

**Algebra**

That is one of the problems that I had, The comma is there in the book, I've tried asking my teacher but he has not responded.If I find out I will let you know thanks so much for your help.
*August 5, 2010*

**Algebra**

x^3+2x^2-5x-6, x+3 I need help factoring this problem The answer that I got was x^3+2x^2-11x+3
*August 5, 2010*

**Physics**

I'm working on a final physics exam, and I've got everything but these two that I'm stuck on. Any help would be appreciated, and explanations too (: --A------B---(----F---- A and B are both pointing up. 1. ^ In that diagram, the image of object A would be A) real, ...
*August 5, 2010*

**US corp tax**

Summarize the administrative powers of the Internal Revenue Service (IRS), including the examination of tax records, the assessment and demand process, and collection procedures. This paper should be approximately three (3) pages in length.
*August 4, 2010*

**Alegbra**

Find the sum of the infinite geometric series given by ∑_(k=1)^∞〖(2/9)^k〗
*August 4, 2010*

**Us history**

what is predestination and how did it affect New England
*August 3, 2010*

**medical terminology**

when are abbreviations acceptable? Who should use them and why?
*August 1, 2010*

**Alegbra**

14. (a) Use a graphing utility to find the exponential regression function for the follow data: {(23.5, 16), (26.7, 48), (28.0, 155), (29.5, 571), (29.9, 896)} (b) Use the function in (a) to predict (to the nearest whole number) the y-value associated with x = 30.8.
*August 1, 2010*

**Alegbra**

11. What, to the nearest tenth, will an earthquake measure on the Richter scale if it has an intensity of I = 43, 512,000 I 0?
*August 1, 2010*

**Alegbra**

14. (a) Use a graphing utility to find the exponential regression function for the follow data: {(23.5, 16), (26.7, 48), (28.0, 155), (29.5, 571), (29.9, 896)}
*August 1, 2010*

**Alegbra**

12. A city whose population was 39,350 in 1995 contained 46,750 people in 2000. (a) Find the exponential growth function for the city. Let t = 0 represent the year 1995. (b) Use the growth function to predict the population of the city in 2009. Round your answer to the nearest...
*August 1, 2010*

**philosophy**

From the knowledge I've gathered in my Penn F book, the answer is Appetite
*July 30, 2010*

**Alegbra**

Pseudoephedrine hydrochloride is an allergy medication. The polynomial L(t) = 0.03t4 + 0.4t3 – 7.3t2 + 23.1t, where 0 <= t <= 5, models the level of pseudoephedrine hydrochloride, in milligrams, in the bloodstream of a patient t hours after 30 milligrams of the ...
*July 28, 2010*

**Math /Equations**

I am supposed to round 26 to the hundredth place however there this number is the tens place so I rounded it down to 0. Not sure if that's right?? thanks
*July 28, 2010*

**Math /Equations**

Hi. I need to find the distance between the two points and then round the answer to the nearest hundredth. (8,4) and (18, 28). Thank you so much.
*July 28, 2010*

**MATH/ EQUATIONS**

ok, thank you so very much!
*July 28, 2010*

**MATH/ EQUATIONS**

Hi. I have a question I need to write an equation that is parallel to the line y= -4x +3 and a y-intercept of -5. Thank you!
*July 28, 2010*

**Alegbra **

Find a polynomial function having the following zeros: – 5, 3 (multiplicity 2), 2 + i, 2 – i; degree 5.
*July 28, 2010*

**HIS 215**

Oh! My last name is Fuentes.
*July 27, 2010*

**HIS 215**

Thank you Ms. Sue, as always you are sooooo helpful. I am gonna start writing my last name so that you can remember me. Jessica is such a common name.
*July 27, 2010*

**HIS 215**

How does this sound?? The negative aspects of the new market economy were that the stability of prices were constantly going up and going down just as quickly. Another negative aspect was that it took some of the sellers a long time to get to their destination and it also took...
*July 27, 2010*