Friday

November 21, 2014

November 21, 2014

Total # Posts: 2,114

**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*

**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*

**Calculus**

to calculate the max of any function (absolute or relative) u must derivate it and find the value of x that cancels that derivative. for your case, here is the solution : *** Solution *** let's derive f(x): f'(x) = 5 - 5*e^(5x) condition that we impose : f'(x) = 0 ...
*April 28, 2010*

**8th grade math**

Hello the 2 variables that u have to conider are the total sales that we will call x in our case, and Kenisha's income that we will call y A) if we translate the first sentence to an equation, we understand that she earns a fixed amount + a percentage on the total sales, ...
*April 28, 2010*

**Math**

Right
*April 28, 2010*

**math**

A plane that flies 170 miles per hour is flying 510 miles. How long will the trip take?
*April 28, 2010*

**Physics**

objects have various reflexion indexes, for a mirror it's close to 1, so this is why it reflects almost everything the law applies for everything, but the reflected ray may be very very weak
*April 28, 2010*

**Science chemistry**

.0118 moles benzoin .288 moles HNO3 How do I do the ratio?
*April 27, 2010*

**Science chemistry**

Assume 2.5 grams of benzion and 12.0 mL of 15.8 M nitric acid (density = 1.51 g/mL) was used in the experiment . What is the mole to mole ratio of benzion and nitrate ion.
*April 27, 2010*

**Physics**

An RC-circuit has a time constant of 6x10-3 seconds. The capacitor stores a maximum energy of 8 J, when charged using a 3-Volt battery. Using the same battery, we want to increase tenfold the amount of stored energy, while keeping the same time constant (to ensure that the ...
*April 27, 2010*

**Physical Science**

What are the various properties of a substance that determine its heat capacity?
*April 27, 2010*

**Physical Science**

What are the various sources of heat?
*April 27, 2010*

**Math**

The mean of a sample of 25 was calculated as xbar = 500. The sample was randomly drawn from a population whose standard deviation is 15. Estimate the population mean with 99% confidence. B.) Repeat part (a) changing the population standard deviation to 30. C.) Repeat part (a) ...
*April 27, 2010*

**college-physics**

In a particular region of space, the magnetic and electric fields have energy densities of 0.2 J/m3 and 4 J/m3 , respectively. Calculate the strength of the magnetic and electric fields in this region.
*April 26, 2010*

**science**

after spraying crops with ddt for several years, farmers found that populations of insect pests rebounded. one reason was that insects had developed resistance to the insecticide. suggest another reason, based on what you know about populations, pyramids, predators and ...
*April 26, 2010*

**math**

Jen and Heather went to lunch. jen had $8.00 for the bill. Gayle had 3/5 of the bill. how much did Gayle pay.
*April 26, 2010*

**algebra 1**

Given the data points (2, 9), (-4, 8), and (7, 3), the relationship shows a direct variation.
*April 22, 2010*

**math**

the ratio of girls to boys in the fifth form is 5;4 there are 144 pupils in the fifth form. how many are girls and how many are boys?
*April 22, 2010*

**math**

what is the unit rate of 2 for $4.98
*April 20, 2010*

**8th grade**

I guess you couldn't solve it. Here's how to solve it x^2(3x-8y) =25(-15-32) =-1175
*April 20, 2010*

**chemistry**

What volume of .200M NaOH will be required to react completely with 32 mL of .15M HNO3
*April 20, 2010*

**Algebra**

THe function h(t)=-16t^2+v0t+h0 describes the height in feet above the ground h(t) of an object thrown vertically from a height of h0 feet, with an initial velocity of v0 feet per second, if there is no air friction and t is the time in seconds sine the object was thrown. A ...
*April 19, 2010*

**Algebra**

THe function h(t)=-16t^2+v0t+h0 describes the height in feet above the ground h(t) of an object thrown vertically from a height of h0 feet, with an initial velocity of v0 feet per second, if there is no air friction and t is the time in seconds sine the object was thrown. A ...
*April 19, 2010*

**Economics**

In a one-shot game, if your rival advertises and you advertise, he will earn $7 million and you will earn $2 million in profits. If neither of you advertise, you will make $4 million and he will make $2 million. If you advertise and your rival does not, you will make $3 ...
*April 19, 2010*

**math**

Marissa plans to cut a wire that is 5 feet 3 inches long. How long should each of the cut pieces be if she wants 7 equal pieces of wire? Find the twenty-second term of an arithmetic sequence if the first term is 4 and the common difference is 10. Find the twenty-second term of...
*April 19, 2010*

**math**

what is the unit rate of 2 for $4.98
*April 18, 2010*

**college algebra**

x^2+34x+c
*April 18, 2010*

**History**

How did human history in North America during the period described in the Prologue differ from the events of Asia, Eurasia, and Europe?
*April 17, 2010*

**math**

How do you do this question? A shipment of 25 television sets contains three defective units. In how many ways can a vending company purchase four of these units and receive (a) all good units, (b) two good units, and (c) at least two good units.
*April 17, 2010*

**math**

When a soccer ball is kicked with a vertical speed of 25 m/s its height, h metres, after t seconds is given by the equation h=-5t^2+25t a) how long after it is kicked is the soccer ball at a height of 30 m ? b) How long is the soccer ball in the air?
*April 15, 2010*

**Business**

Consider the wide spectrum of business organizations, ranging from gigantic corporations to working at home. Describe at least three types of business organizations that you are familiar with or that you would like to know more about. How is each one advantageous to the ...
*April 13, 2010*

**Investments**

You are to analyze and compare one company from the holdings to another company that the Fund does not currently own within the same sector. (USB, PNC). Your analysis will include both fundamental and technical analysis. For the fundamental analysis, you are to calculate the ...
*April 13, 2010*

**chemistry**

How would one calculate the equilibrium pressure of Sodium bicarbonate and citric acid in water (think Alka Seltzer), reacting in a closed volume. The pressure builds up to a point, where the reaction slows due to pressure build up. How do I calculate the equilibrium pressure ...
*April 12, 2010*

**Pre Calculus**

Verify the following identity 2 tan x/1+tan^2 x = sin 2x
*April 12, 2010*

**Anatomy and Physiology**

What structure still works to pump out sodium and potassium in while resting to maintain the concentration gradient? a. cell body b. axons c. dendrites d. synapse All of the following are characteristic of the passive potassium channel except _____. a. found on cell body, ...
*April 9, 2010*

**Anatatomy and Physiology **

The ability of a specific tissue or organ to respond to the presence of a hormone is dependent on:
*April 8, 2010*

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