Thursday

February 11, 2016
Total # Posts: 2,357

**Calculus**

Find the absolute maximum and minimum values of f(x)=(x^2)(e^(-x/2)) on the interval [-1,6]
*September 20, 2010*

**Maths**

hoe can i derive this equation. s(v)=(4pi)^1/3(3v)^2/3 and please explain.
*September 20, 2010*

**Physics**

Block A of mass 4.0 kg is on a horizontal, frictionless tabletop and is placed against a spring of negligible mass and spring constant 650 N m. The other end of the spring is attached to a wall. The block is pushed toward the wall until the spring has been compressed a ...
*September 19, 2010*

**Physics**

Block A of mass 4.0 kg is on a horizontal, frictionless tabletop and is placed against a spring of negligible mass and spring constant 650 N m. The other end of the spring is attached to a wall. The block is pushed toward the wall until the spring has been compressed a ...
*September 19, 2010*

**Math**

On what interval(s) is the curve y=(2e^x)-(e^(-3x)) concave downward?
*September 18, 2010*

**math**

Can not be solved. You can simply it down more to get 3x+6=3x. If you move the 3x to the same side you get 6=0 which is false.
*September 18, 2010*

**GPA?**

Would taking extra classes online help raise my GPA to a 2.8?? (I'm a junior and i need it raised before the end of my senior year. I have a 1.27 Grade Point Average right now.)
*September 18, 2010*

**algebra**

The difference of a number and 7 is the same as 45 less the number. find the number
*September 16, 2010*

**Europe**

what role did the geography of Europe play in the development of and ways of life in these towns?
*September 15, 2010*

**Earth Science**

During the Dinosaur Ages, if there was a region with a mountain range, alluvial plain, and a shallow sea. Which place would it be the most likely for dinosaur fossils to be formed?
*September 13, 2010*

**MATH**

Suppose that you have a supply of a 25% solution of alcohol and a 75% solution of alcohol. How many quarts of each should be mixed to produce 100 quarts that is 30% alcohol?
*September 11, 2010*

**Algebra**

ok I have got the answer anyway...thanks for ur help in the other question
*September 10, 2010*

**Algebra**

yes thats correct...Can you see where i am making a mistake in this problem. 1-125x^3 I got answer of -(5x-1)(25x^2+5x+1) but it seems to be wrong
*September 10, 2010*

**Algebra**

Factor 4xy+28x+y+7
*September 10, 2010*

**Algebra**

never mind. I have fiugured out the answers
*September 10, 2010*

**Algebra**

Could someone please help me with those 2 problems...thanks a lot for any of your help Use an algebraic approach to solve the problem. Find three consecutive integers whose sum is 57. Suppose that Maria has 140 coins consisting of pennies, nickels, and dimes. The number of ...
*September 10, 2010*

**Algebra-Please Help!!**

What is the solution of x-4 is less than 4 and x + 4 is greater than 7 Please show how you did it so I can look at it and learn how to do them in the future Thanks
*September 7, 2010*

**Algebra**

What is the solution of x-4 is less than 4 and x + 4 is greater than 7 Please show how you did it so I can look at it and learn how to do them in the future Thanks
*September 7, 2010*

**Math**

What is the solution of x-4 is less than 4 and x + 4 is greater than 7 Please show how you did it so I can look at it and learn how to do them in the future Thanks
*September 7, 2010*

**Spanish**

Thank you
*September 7, 2010*

**Math**

ostriches=9 feet tall Birds in aviary=birds belong to me ostrich=does not live on mince pies birds belong to me=9 feet tall cancel all that are in common: the ostriches, birds belong to me, and 9 feet tall. You are left with the conclusion: The birds in my aviary do not live ...
*September 6, 2010*

**physics**

Is this question answerable???????? please help fast
*September 6, 2010*

**physics**

A foam cube bounces to a height of 15cm when dropped from a height of 100cm. To what height will it bounce if dropped from a height of 2.5cm? How do
*September 6, 2010*

**physics**

A round ball bounces to 2m after being dropped from an undetermined height. To what height will it bounce if dropped from a height 2.5 times as high? (how do u even calculate this problem?). (or is it just a problem that cant be solved?)
*September 6, 2010*

**physics**

drwls- so the answer cannot be determined?
*September 5, 2010*

**physics**

A ball of mass 1.2kg and a volume of 35cm cubed is dropped from a height of 2m. Determine the height to which this ball will bounce.
*September 5, 2010*

**calculus**

Use the ratio test to determine whether the series is convergent or divergent. 1/2 + 2^2/2^2 + 3^2/2^3 + 4^2/2^4 + ...
*September 4, 2010*

**Finance**

I think not but why?
*September 2, 2010*

**Finance**

Saturated Meat Corporation preferred stock is currently selling for $22 per share. The preferred dividend is $2.50 per share. If Jennifer requires a return of 10% on the preferred stock, should she invest in this stock?
*September 2, 2010*

**Buisness - Finance**

Determine the value of a $500 Canadian Pacific Limited perpetual 8 percent debenture if the required rate of return is 14%:
*September 2, 2010*

**tsu**

can you help with this answer anyway?
*September 2, 2010*

**10th grade Honors English**

Well i want to know what my teacher is asking
*September 1, 2010*

**10th grade Honors English**

What is my English teacher asking? Here is the prompt. Life can be considered a series of stories. It is the narrative we tell and hear the create the life the we live. And it id through these narratives that messages are passes. "October Sky", "Celebration of ...
*September 1, 2010*

**Physics**

Engr joe
*August 31, 2010*

**Math**

.86/1
*August 30, 2010*

**5th grade social studies**

what times on a clock make an acute angle? Is it 2:006:40 1:30 12:50
*August 29, 2010*

**arithmetic**

a total of eight pills are on a table. all have the same color and size. however, one is poisonous and weighs a fraction more than the others. a balance scale may be used only two times to determine the heavier pill. seven of the pills must be eaten.
*August 29, 2010*

**Chemistry**

i had the same question
*August 28, 2010*

**algebra 1**

please explain to me how I work out problems such as "-2-3" to get the correct answer and show the same on a number line
*August 26, 2010*

**math/chem**

it is estimated that uranium is relatively common in the earth's crust, occurring in amounts of 4 g/metric ton. a metric ton is 1000kg. at this concentration, what mass of uranium is present in 1.0 mg of earth's crust?
*August 23, 2010*

**economics**

What is the opportunity cost (in dollars) to attend an hour-long econ lecture for A $160,000 per year corporate executive who works 2,000 hours per year?
*August 22, 2010*

**summer reading**

the time hackers
*August 16, 2010*

**Chemistry**

Which solution has the higher osmotic pressure, 2 M NaCl or 2 M CaCl2?
*July 27, 2010*

**Chemistry**

Which solution has a higher vapor pressure, 1 M NaCl or 1 M glucose(C6H12O6)?
*July 27, 2010*

**accounting**

Compute the total, price, and quantity variances for materials and labor. The following direct materials and direct labor data pertain to the operations of Batista Manufacturing Company for the month of August. Costs Quantities Actual labor rate $13 per hour Actual hours ...
*July 27, 2010*

**accounting**

E11-6 The following direct materials and direct labor data pertain to the operations of Batista Manufacturing Company for the month of August.
*July 27, 2010*

**Physics**

60.0MW
*July 25, 2010*

**algebra**

Thank you.. SO would it be (x-5)(x+5)
*July 19, 2010*

**algebra**

Please help me factor this by grouping. I am stuck. 7x^3-35x^2-6x+30
*July 19, 2010*

**physics**

The answer to question 3 is mass, but I don't know any more of them.
*July 13, 2010*

**IDEA Act**

Determine how IDEA 2004 affects diverse learners. I am having troube with this question. Can anyone help me?
*July 10, 2010*

**algebra**

Plot (0,3) on the crodinate axes.
*July 5, 2010*

**chemistry**

226.1 mm Hg
*June 21, 2010*

**Bio**

The answer is B?
*June 21, 2010*

**Bio**

The ultimate source of the energy in food ___________________ A)is ATP B)is the sun C)is producers D)is plants E)is consumers
*June 21, 2010*

**math**

assignment for an art class is to complete 4 projects from a list of 6. how many ways can this be done if the order soes not matter?
*June 17, 2010*

**statistics**

There are 120 possible samples of size n=3 which can be drawn from this population of 10 scores: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 Write each sample and calculate its mean
*June 15, 2010*

**english**

what is the sypmbol of freedom? is it the white dove? just want to know for my poster im doing
*June 13, 2010*

**history**

What were the international consequences of the stock market crash in 1929? How did world leaders respond to the global depression? with what results?
*June 7, 2010*

**History**

Thank you sooo much!!
*June 5, 2010*

**History**

What social factors contributed to American Imperialism? I have searched and searched and not found anything. If anyone can help me, even with a website I would be grateful. Thanks so much.
*June 5, 2010*

**language**

Instructions Using specific references from "In Memoriam" Lyric 56 and from "Tintern Abbey," contrast Tennyson's view of the relationship between man and nature with that of Wordsworth's, demonstrating a comprehensive understanding of the ...
*June 2, 2010*

**language**

Poetic diction is used to refer to the linguistic style, the vocabulary, and the metaphors used in the writing of poetry Right? So it wouldnt be that one etheir, So my choices are now between 3 atmosphere 5 none of these But how do i know if it is none of these?
*June 2, 2010*

**Chemistry**

If radon-222 has a half-life of 3.8 days, determine how long it takes for only 1/8 of a sample to remain.
*June 1, 2010*

**Eth 125**

iat
*May 27, 2010*

**Spanish 3**

I am using "por" correctly in this sentence?: Podré reunirme contigo la semana que viene porque por ese momento tendré más tiempo.
*May 27, 2010*

**Macroeconomics**

Suppose the economy has been experiencing zero inflation and five percent unemployment for several years. The government decides to lower the unemployment percentage by generating some inflation. You need to do the following: 1)create a graph showing what the short-run effects...
*May 24, 2010*

**Geometry**

Area reqd. = 4.3*4.3 - ¡Çr^2 where r = 2.15 m Area = 3.96214 sq m
*May 24, 2010*

**Algebra**

y = mx + c is a line with slope=m and a y-intercept of c. And hence the reqd. line: y= -2x/3 + 2 or 2x+3y=6 Ajit
*May 23, 2010*

**accounting info. systems**

The last step in the revenue cycle is cash collections. The accounts receivable department must know when customers pay their invoices, yet segregation of duty controls dictate that the collection and recording functions be kept separate from each other. What is a solution to ...
*May 23, 2010*

**CALCULUS **

This is actually a question from co-ordinate geometry. If (x1,y1), (x2,y2) and (x3,y3) are the vertices of a triangle then its area = (1/2))(x1(y2-y3)+x2(y3-y1)+x3(y1-y2)) The co-ordinates of the vertices aren't very clear in your Q but assuming that the three points are...
*May 23, 2010*

**math**

Vol. of cylinder = ¡Ç(r^2)h and vol. of hemi-sphere=(¡Çh^3)/12 and hence their ratio = 12(r/h)^2 where r, h are the radius & and the height of the cylinder
*May 23, 2010*

**Math**

For a can with both ends closed, Area reqd. = 2¡Çrh + 2¡Çr^2 where r=6,h=4 and assume ¡Ç=22/7, A=2640/7 sq in. If one end of the can is open then A=2¡Çrh + ¡Çr^2 = 264 sq in.
*May 23, 2010*

**math**

What is the greatest amount of postage you can not pay using only 7 and 11 cent stamps?
*May 23, 2010*

**physical science**

calculate the KE of a 1500 kg. car travelling at 60 km/h
*May 19, 2010*

**physical science**

What will the stopping distance be for a 1,000-kg car if -2,000 N of force are applied when the car is traveling 10 m/s?
*May 19, 2010*

**chemistry**

A metal pipeline is laid to carry oil 500 miles across desert.Temp @ night is 30 F: during day temp is 130 F? The linear coefficient of thermal expansion of metal is 0.000006, how much expansion and contraction along pipeline must the design engineer plan for.. a. 475 ft b. ...
*May 18, 2010*

**chemistry**

A). the process will still be first order, but the rate constant will decrease.
*May 16, 2010*

**math**

Nikki cam word process 7 words in 6 seconds. At this rate, how many words can she process in 3 minutes?
*May 16, 2010*

**math**

In how many ways can a cashier give change of exactly 60 cents if he has the following coins available? 10 quarters; 10 dimes; 10 nickels
*May 16, 2010*

**IT 210**

Generate an object-oriented design for a system that keeps tracks of your CD and DVD collection. · Identify each of the classes, associated data, and operations for the classes. · Generate the pseudocode for each of the classes as demonstrated on p. 251. ·...
*May 16, 2010*

**Economics**

A New Hampshire resort offers year-round activities: in winter, skiing and other cold-weather activities; and in summer, golf, tennis, and hiking. The resorts operating costs are essentially the same in winter and summer. Management charges higher nightly rates in the winter, ...
*May 16, 2010*

**Economics**

The U.S. cigarette industry has negotiated with Congress and government agencies to settle liability claims against it. Under the proposed settlement, cigarette companies will make fixed annual payments to the government based on their historic market shares. Supposed a ...
*May 16, 2010*

**chemistry**

Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. Note: Pay attention to significant figures. Do not round until the final answer.) The molar heat of reaction,delta H rxn , for the reaction of Ca(s) + 2H+(aq)->...
*May 16, 2010*

**Chemistry**

What catalysts are used to manufacture sulfuric acid and nitric acid?
*May 15, 2010*

**Grade 8 Geometry**

In a triangular prism V=(1/3)x(Base Area)x(Height) To find Base Area in the case of triangular prism we use the formula for area of a triangle that is A=(1/2)x(L+W)
*May 15, 2010*

**math**

Suppose that an experiment has five separate mutually exclusive outcomes: A, B, C, D, and E. If the sample space for the experiment is a uniform sample space, what is p(a or e)
*May 12, 2010*

**life science**

An organism's ability to maintain steady internal conditions despite changes in its external environment is called biogenesis homeostasis osmosis respiration In an organism, a virus enters, and reproduces within, a(n) host cell infection interferon parasite The theory that...
*May 12, 2010*

**Math**

Can someone please condense this expression. I do not know how. 1/2ln(x^2+1)-4ln1/2-1/2[ln(x-4)+lnx]
*May 11, 2010*

**English**

What are some good key quotes (about 6-8) for Reverend Hale in The Crucible?
*May 10, 2010*

**Schindler's List Essay**

lol
*May 8, 2010*

**math **

what is the scientific notation of 1,200,000
*May 7, 2010*

**Science**

That is the dental formula of a cow.
*May 4, 2010*

**math**

what is a fraction between 1/3 and 2/3?
*May 4, 2010*

**probability Please check answer**

If John has 22 marbles and 25 are reds, 16 are blue and the remaining marbles are yellow, what percentages of John’s marbles are yellow?
*May 2, 2010*

**chem**

14?
*April 29, 2010*

**alegbra**

cmon u don't need help for this one ! but anyway here is a hint : REPLACE enough said :)
*April 29, 2010*

**Maths**

if i understood the question correctly, here is how u do this : percentage = (113/1600)*100 = 7.0625 % 2 decimale places : there is a 2 after the 6, 2<5 thus u don't increment the 6 and the answer is 7.06 %
*April 29, 2010*

**alegbra**

true i am sorry for that ! thanks Reiny for correcting :)
*April 29, 2010*

**alegbra**

(x-5)(x+19) = x^2 + 14x - 95 second degree equation (y = a*x^2 + b*x +c), must use Delta = b^2 - 4*a*c to solve it *** Solution *** Delta = (14)^2 - 4*(1)*(-95) = 596 > 0 two solutions: x1 = (-b-sqrt(Delta))/(2*a) x2 = (-b+sqrt(Delta))/(2*a) Numeric Application : x1 = -19 ...
*April 29, 2010*