Sunday

December 11, 2016
Total # Posts: 1,926

**Economics**

4 (ii) You manage Dirt Diggers, an excavating firm that excavates roadside ditches for laying drainpipes. Its output follows the production function: Q = 10L -.1L2 where L denotes labor hours and Q the length of the ditch in meters. You can hire labor at the going wage rate of...

*May 25, 2011*

**Economics**

3. (i) Sleak Teak builds yard furniture using hardwoods and (in a smaller shop) handcrafted knick-knacks from the same sort of wood. The hardwood usage in the two lines of product are Yard Furniture: Y = 2 Ty - .001Ty2 Knick-knacks: Z = 20Tz - .01 Tz 2 where Y and Z are units ...

*May 25, 2011*

**Algebra**

I need help multiplying rational expressions.. x-2/x+3 x 4x+12/6 first I took the four out from 4x +12/6 so I got x-2/x+3 x 4(x+3)/6 but now I'm not sure what to do?

*May 25, 2011*

**Chemistry**

Please help! How many moles of hydrogen are needed to triple the volume occupied by 0.25 mol of hydrogen, assuming no changes in pressure or temperature

*May 25, 2011*

**Chem**

Chemistry please help. A 20.0-L gas cylinder contains 4.80 g H2 at 25 degree celcius. what is the pressure of this gas?

*May 24, 2011*

**com155**

Imagine you are expected to write a three-page paper. Design an organizational and time management plan to complete this paper. keep in mind the paper requirements are to select a topic, write a thesis, write supporting material, and include a minimum of three sources

*May 20, 2011*

**Algebra**

Simplify A^6 x a^2b^-2 44,909 in scientific notation Simplify (a^2b^3)(a^5) Simplify x^-5y^-6 What is the P(H,H,H,H,T,T,T,) on 7 flips of a coin?

*May 19, 2011*

**math **

How do you get 5/6

*May 19, 2011*

**Management**

1. List at least FIVE sources you will use to obtain information about the firm’s strengths, weaknesses, opportunities, and threats. Discuss what categories of the SWOT elements of information are readily available on the Internet. What categories of data are difficult or...

*May 17, 2011*

**statistics**

the average number of years a person takes to complete a graduate degree program is 3. the standard deviation is 4 months. Assume the variable is normally distributed. If an individual enrolls in the program, find the probability that it will take. a) More than 4 years to ...

*May 16, 2011*

**statistics**

the average amount of rain per year in Greenville is 49 inches. the standard deviation is 8 inches. find the probability that nest year greeville will receive the following amount of rainfall. assume the variable is normally distributed. a) At most 55 inches of rain b) at ...

*May 16, 2011*

**statistics**

on the daily run of an express bus, the average number of passengers is 48. the standard deviation is 3. Assume the variable is normally distributed. find the probability that the bus will have. a) between 36 and 40 passengers b) fewer than 42 passengers c) More than 48 ...

*May 16, 2011*

**US History**

I have to do a political cartoon based on any event between the mid 1300's and 1812. But I'm having a difficult time picking out what to do it on. Does anyone have any ideas?

*May 16, 2011*

**statistics**

the average number of gallons of lemonade consumed by the football team during a game is 20, with a standard deviation of 3 gallons. assume the variable is normally distributed. when a game is played, find the probability of using a) Between 20 and 25 gallons b) less than 19 ...

*May 16, 2011*

**statistics**

there are 48 raincoats for sale at a local men clothing store. Twelve are black. If 6 raincoats are selected to be marked down, find the probability that exactly 3 will be black.

*May 16, 2011*

**statistics**

If 8% of the population of trees are elm trees, find the probability that in a sample in a sample of 100 trees, there are exactly 6 elm trees. assume the distribution is approximately Poisson

*May 16, 2011*

**statistics**

In a bowling league, the probability that the uniforms are all 1 color is 0,45, that 2 colors are used is 0.35, and that 3 or more colors are use is 0.20. if a sample of 12 uniforms is selected, find the probability that 5 contain only 1 color, 4 contain 2 colors, and 3 ...

*May 16, 2011*

**statistics**

the probability that a television containt 0, 1, or 2 defects is 0.88, 0.08, and 0.04, respectively. in a sample of 16 television, find the probability that 9 will have 0 defects, 4 will have 1 defect, and 3 will have 2 defects.

*May 16, 2011*

**statistics**

A history class has 75 members. If there is a 12% absentee rate per class meeting, find the mean, variance, and atandard deviation of the number of students who will be absent from each class

*May 16, 2011*

**Chem**

does charles law depend on the identity of the gas

*May 10, 2011*

**Chem**

does charle's law depend on the identity of the gas

*May 10, 2011*

**Chemistry**

How many grams of NaCl would be required to make a 24% NaCl solution if 250 ml of water were used

*May 1, 2011*

**Probability**

Five cards are drawn from an ordinary deck without replacement. Find the probability of getting a. All red cards b. All diamonds c. All aces

*April 29, 2011*

**Chemistry**

Three solutions are mixed together to form a single solution. One contains 0.2 mol Pb(CH3COO)2, the second contains 0.1 mol Na2S, and the third contains 0.1 mol CaCl2. Write the net ionic equations for the precipitation reaction or reactions that occur.

*April 29, 2011*

**Statistics**

Cholesterol levels of adult males are approximately normally distributed with a mean of mg/dL and a listed variance of . Some researchers claim that the variance of cholesterol levels of adult males is less than . Suppose that we want to carry out a hypothesis test to see if ...

*April 29, 2011*

**Pre-Calculus**

How do I solve, in radians and degrees, 2-3sin(3(x-pi))=6?

*April 27, 2011*

**Physics **

user-generated content: report abuse What approximate change in decibels does an observer experience from a sound source if the observer moves to a new location that is 67% as far from the source? My answer choices are 23, -23, 40, 2.76, -2.76, 1.94, -1.94, 2.57, -2.57, and 0 ...

*April 26, 2011*

**Chem Webwork UCI**

Complete the table below: What is the pH of the solution created by combining 0.70 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? mL NaOH: 0.70 pH w/ HCl: 1.08 pH wHC2H3O2: 3.23 Complete the table below: What are the pH ...

*April 25, 2011*

**Chem Webwork**

nevermind, i got the answer

*April 25, 2011*

**Chem Webwork**

Complete the table below: What are the pH values if you take into account that the 8.00 mL of 0.10 M Acid was first diluted with 100 mL of water (like it will be in the experiment you perform in lab)? mL NaOH: 0.70 pH w/ HCl: 2.14 pH w/ HC2H3O2: ??? I got pH w/ HCl, but I can...

*April 25, 2011*

**political science**

Which President developed the Policy of preemption with regard to foreign policy?

*April 24, 2011*

**Math(can you just check my answer please)**

¡çLMN and ¡çNMO are adjacent angles that share MN ƒåƒåƒåƒåƒâ as a side. Together, those two angles form ¡çLMO. What equation can you write that shows the relationship between m¡...

*April 20, 2011*

**science**

What is another word for exothermic?

*April 16, 2011*

**math**

a triangle with a side of length 2/7 units and side of length 15/28 units

*April 14, 2011*

**Trigonometry**

Proof the identity 1 + sin 2x/cos 2x = cos x + sin x/ cos x - sin x

*April 7, 2011*

**Trigonometry**

If 13 sin x + 5= 0 and x є (0º; 270º) calculate the sum of 2x

*April 7, 2011*

**Trigonometry**

cos(54º-X)=sin2X

*April 7, 2011*

**Math**

If you pay 3.5 % interest over 4 years and the interest earned is $498.40 what is the principal

*April 6, 2011*

**trig**

If an equilateral triangle has a side of 10 ft what is its altitude to two significant digits

*April 6, 2011*

**Cal II**

Intergral (27-9x^2)^(1/2) fit to theorem (a^2-u^2)^(1/2)

*April 4, 2011*

**elapsed time**

elapsed time is 2hr 37min, end time is 10:52P.M., what is the start time?

*April 4, 2011*

**elapsed time**

start 11:38a.m. elapsed time 3hr 10 min what is the end time?

*April 4, 2011*

**Math**

Using only whole numbers, how can you draw three rectangles with a perimeter of 12 units?

*March 29, 2011*

**7th Grade Math**

The area shaded is the matting and it is 64 square inches. What side length of a picture frame do you need to cover the entire picture? There is a 6inch square opening in the matting.

*March 29, 2011*

**Chemistry**

I need help on this, I don't know the answers

*March 26, 2011*

**teaching**

hello. i need help starting a pre-iep outline. i have never seen one before. thank you.

*March 25, 2011*

**Science**

Do neurons send electrical messages to the brain to tell the body what to do?

*March 23, 2011*

**social studies**

what facts are there on point of view on tariffs on imported goods

*March 20, 2011*

**English-**

What is the theme of the book NUmber 8 by Anna Fienberg?

*March 20, 2011*

**English- Figurative Language**

What type of figurative language is the following sentence? : Oh, never, if I live to a million, Shall I feel such a terrible pain.

*March 20, 2011*

**Math**

a. X is the number of tables and y is the number of chairs: 90x+40y< or = $1000 b. i have no idea c. 3

*March 20, 2011*

**Chemistry**

2g NaHCO3 + .6 mL HCL --> NaCl+CO2+H2O How much carbon dioxide do I get? How do I find out? I got 410 mL of CO2, is this correct?

*March 19, 2011*

**Chemistry**

2g NaHCO3 + .6 mL HCL --> NaCl+CO2+H2O How much carbon dioxide do I get? How do I find out?

*March 19, 2011*

**math**

3/4 = $0.75 1/10=$0.10

*March 17, 2011*

**chemistry**

The combustion of propane (C3H8)produces CO2 and H20: C3H8(g)+5O2(g) 3CO2(g)+4H2O(g) Calculate the mass, in grams, of H2O that will be produced if 2.5 mol of O2 is consumed.

*March 16, 2011*

**chemistry**

The combustion of propane (C3H8)produces CO2 and H20: C3H8(g)+5O2(g) 3CO2(g)+4H2O(g) Calculate the mass, in grams, of H2O that will be produced if 2.5 mol of O2 is consumed.

*March 16, 2011*

**PHYSICS**

I used the formula, but I still don't know how to solve the problem ? Did you get it ?

*March 15, 2011*

**Chemistry II**

How much energy would be required to heat 60 grams of water from -50 degrees C to 200 degrees C?

*March 14, 2011*

**Chemistry II**

100 grams of KNO3 is dissolved in one liter of water. Calculate the freezing point depression and boiling point elevation.

*March 14, 2011*

**english**

C- unlike oak roots, maple roots often invade water lines.

*March 12, 2011*

**double integral**

1. Sketch the region of integration & reverse the order of integration. Double integral y dydz... 1st (top=1, bottom =0)... 2nd(inner) integral (top=cos(piex), bottom=(x-2)... 2. Evaluate the integral by reversing the order of integration. double integral sqrt(2+x^3) dxdy... ...

*March 11, 2011*

**accounting**

Lone Star Theatre Inc. owns and operates movie theaters throughout Arizona and Texas. Lone Star Theatre has declared the following annual dividends over a six-year period: 2005, $7,500; 2006, $9,000; 2007, $30,000; 2008, $30,000; 2009, $40,000; and 2010, $48,500. During the ...

*March 9, 2011*

**Chemistry**

How many moles of ethanol is contained in 250.0 ml of a 1.90M ethanol solution? A. none of these B. 7.60 C. 475 D. 0.475

*March 5, 2011*

**chemistry**

how do I prepare 50% and 70% ethanol from 95% ethanol?

*March 4, 2011*

**Psychology**

s2 pooled= 19/48 (10) + 29/48 (25)

*March 4, 2011*

**calculus**

find equation of the tangent line to the graph of f(x) at the given point f(x)=(x-1)(2x+3)/(x-5) at 9, 42

*March 2, 2011*

**Chemistry- please help**

How do I go about preparing 50% ethanol and 70% ethanol from 95% ethanol?

*February 27, 2011*

**chemisrty**

calculate the percent by mass of carbon(c) in the amino acid arginine,C6H16N4.

*February 27, 2011*

**Chemstry **

Lovastatin (C24H36O5) has a molar mass of 404.53 g/m. The normal dose of the drug lovastain is 20mg. How many molecules of lovastatin (C24H36O5) are in a normal dose?

*February 24, 2011*

**Psychology**

inherited universal ideas, wishes, and memories.

*February 23, 2011*

**ON LINE LIBRARY SOURCES**

HOW CAN THE ONLINE LIBRARY HELP ME WITH FINDING MY ACEDEMIC WRITING?

*February 18, 2011*

**algebra**

-4/3x+3=

*February 15, 2011*

**physics**

What is the maximum power consumption of a 8.7 V portable CD player that draws a maximum of 354 mA of current?

*February 15, 2011*

**physics**

What is the resistance of a 2.5 m length of copper wire 1.3 mm in diameter?

*February 15, 2011*

**Language Arts**

Hello! I have to write a summary of a book that I've read, and I've been writing it, and I'm worried I'm putting in too much detail/making it too specific/too long? I wasn't sure if I'm supposed to summarize the whole plot in a couple of paragraphs, or ...

*February 14, 2011*

**Math**

List the x-intercepts for the function f(x)=ln |x-1|

*February 13, 2011*

**Math**

List the x-intercepts for the function f(x)=ln |x-1|

*February 13, 2011*

**Math**

List the x-intercepts for the function f(x)=ln |x-1|

*February 13, 2011*

**Chemistry**

A fish tank holds 40 gallons of water (density 1.00g/mL) when full. What is the mass of the water in kilograms (kg)?

*February 7, 2011*

**Math**

ok thanks!

*February 2, 2011*

**Math**

Ineed to come up with an EXCEL formula for the following; Ineed to determine the total number of games. I know the % (games) of lost and I know the number of (game) wins. I need to determine the total number of games. I can figure the % of wins by subtracting the % lost from ...

*February 2, 2011*

**Algebra 2**

what happens when the major and minor axies are exactly the same length?

*January 31, 2011*

**math(HELP)**

what is the answer to 1x2x3x4x5x6x7x8x9x10x11x12x13x14x15x16x17x18x19x20 please

*January 28, 2011*

**Math-Algebra II**

How would you interpret the findings of a correlation study that reported a linear correlation coefficient of − 1.34? The only thing I know is that it represents a negative correlation. Please shed any light you can.

*January 26, 2011*

**Chemistry**

Determine the volume of concentrated HCL and the volume of water needed to produce 20mL of 6M HCL.

*January 26, 2011*

**US History**

Hello! I have to do a project about a colony that became a state, and I decided to do Connecticut. There's some things I need to find out, like who were the first settlers, what special problems did they face, and who were the early leaders? Can someone point me out a ...

*January 25, 2011*

**Calculus**

What is the slope-intercept equation of the line tangent to the graph of y=8ln(x) when x=5.

*January 23, 2011*

**science**

What is an hypothesis for this question; Do males and females play the same types of games?

*January 22, 2011*

**Economics**

Suppose the demand curve for a monopolist is Qd = 500 – P, and the marginal revenue function is MR = 500 -2Q. The monopolist has a constant marginal and average total cost of $50 per unit. A. Find the monopolist’s profit- maximizing output and price. B. Calculate the...

*January 17, 2011*

**Economics**

Suppose the demand curve for a monopolist is Qd = 500 – P, and the marginal revenue function is MR = 500 -2Q. The monopolist has a constant marginal and average total cost of $50 per unit.

*January 17, 2011*

**algebraII**

solve for x: 1)log(x-3)+log(x+4)-logx=log5

*January 17, 2011*

**Math**

4. Vanna has just financed the purchase of a home for $200 000. She agreed to repay the loan by making equal monthly blended payments of $3000 each at 9%/a, compounded monthly. c. How long will it take to repay the loan? d. How much will be the final payment? e. Determine how ...

*January 17, 2011*

**MATH**

Mike wants to buy a snowmobile. His parents decide to lend him $9 000 at 10%/a, compounded monthly, if he agrees to repay the amount by making equal monthly (at the end of the month) payments for five years. d. Write the series that represents the present value of the annuity...

*January 17, 2011*

**math**

a circular pond has a diameter of 1.8m and a depth of 55cm. if we fill the pond with water, what is its volume

*January 15, 2011*

**math**

-4(x^-8)=84

*January 13, 2011*

**physics**

Identical +1.45 µC charges are fixed to adjacent corners of a square. What charge (magnitude and algebraic sign) should be fixed to one of the empty corners, so that the total electric potential at the remaining empty corner is 0 V?

*January 13, 2011*

**earth science**

three reason and explanations why oil and natural gas is called fossil fuels?

*January 12, 2011*

**earth science**

what's a good topic sentence and conclusion for why do they call oil and natural gas fossil fuels?

*January 12, 2011*

**earth science**

thanks:)

*January 12, 2011*

**earth science**

why do they call oil and natural gas "fossil" fuels?

*January 12, 2011*