Wednesday

September 3, 2014

September 3, 2014

Total # Posts: 70,058

**Chemistry**

The decomposition of NO2 at room temperature exhibits the following variation in concentration with time: The concentration of NO2 is expressed in mol/liter, while time is expressed in seconds. [NO2] ln[NO2] 1/[NO2] Time (s) 0.0831 -2.4877 12.03 0 0.0666 -2.7091 15.02 4.2 0....
*July 28, 2014*

**physical**

what is cell
*July 28, 2014*

**physical science **

what is observed during an experiment of oxalic acid and sodium hydroxide
*July 28, 2014*

**counseling**

A low, non-significant correlation between an observation-based assessment of symptoms of autism and a teacher-report of ADHD symptoms provides ____________ of the validity of the autism measure
*July 28, 2014*

**Algebra**

3(x-1) -2(x^2+3x+4)-5(x+9)=
*July 27, 2014*

**finance**

Program A has a profit of $5,000 and an investment of $100,000, while program B has a profit of $10,000 and an investment of $220,000. Which program has the better ROI?
*July 27, 2014*

**SAT**

Suits at a local clothing store are discounted 20%. Despite the discount, the store owner enjoys a net profit (discount price minus cost) equal to 60% of the cost of the suits. If the suits cost the clothing store owner $200 each, what was the prediscount price of each suit? ...
*July 27, 2014*

**Science**

What do these symbols mean: 8=====> and ({!}) and ({8=!})?
*July 27, 2014*

**Finanace**

If a firm just paid a dividend equal to $4.00 a share, then for the WACC, in order to find the cost of equity, $4 should be
*July 27, 2014*

**Math**

Sita needs a perfect score of 100 for math test in this year so as to improve on her average score from 84 to 86. How many maths tests were there altogether in this year?
*July 27, 2014*

**Maths**

The average mass of Ken, David and Kelvin is 42 kg. David is 6 kg heavier than the average mass of Ken and Kelvin. Ken is 6kg heavier than Kelvin. Find David's mass.
*July 27, 2014*

**math**

The average mass of a group of children is 36kg. If 3/7 of the no. of children are girls and their average mass is 32 kg, find the average mass of the boys.
*July 27, 2014*

**finance**

St. Luke’s Convalescent Center has $200,000 in surplus funds that it wishes to invest in marketable securities. If transaction costs to buy and sell the securities are $2,200 and the securities will be held for three months, what required annual yield must be earned ...
*July 27, 2014*

**finance**

An important source of temporary cash is trade credit, which does not actually bring in cash, but instead slows its outflow. Vendors often provide discounts for early payment. What is the formula to determine the effective interest rate if the discount is not utilized?
*July 27, 2014*

**finance**

Your firm is considering the following three alternative bank loans for $1,000,000: a) 10 percent loan paid at year end with no compensating balance b) 9 percent loan paid at year end with a 20 percent compensating balance c) 6 percent loan that is discounted with a 20 percent...
*July 27, 2014*

**chemistry**

A sol n contains 37g cuso4 and 111g water . Calculate the concentration by mass /c of sol n.
*July 27, 2014*

**health care finance**

An important source of temporary cash is trade credit, which does not actually bring in cash, but instead slows its outflow. Vendors often provide discounts for early payment. What is the formula to determine the effective interest rate if the discount is not utilized?
*July 27, 2014*

**health care finance**

Your firm is considering the following three alternative bank loans for $1,000,000: a) 10 percent loan paid at year end with no compensating balance b) 9 percent loan paid at year end with a 20 percent compensating balance c) 6 percent loan that is discounted with a 20 percent...
*July 27, 2014*

**health care finance**

St. Luke’s Convalescent Center has $200,000 in surplus funds that it wishes to invest in marketable securities. If transaction costs to buy and sell the securities are $2,200 and the securities will be held for three months, what required annual yield must be earned ...
*July 27, 2014*

**algebra**

A company charges 200 for each leather bag on order of 150 or less. The cost of each bag is reduced by 1 for each order in excess of 150 pieces. How many bags on order would result in result in maximum revenue? What is the maximum revenue?
*July 27, 2014*

**Philosophy **

According to Aristotle, we should begin ethical inquiry by specifying
*July 27, 2014*

**math**

A2-b2 farmula
*July 27, 2014*

**Chem: x-ray**

Experiment to obtain the X-ray diffraction peaks of an unknown metal. Radiation is K_alpha from Cu. Through these diffraction peaks you wanted to determine: (a) whether the cell is SC, BCC, or FCC (b) the (hkl) value of the peaks (c) the lattice parameter a of the metal sin^2(...
*July 26, 2014*

** math**

the table below shows some values for the function f. if f is a linear function, what is the value of a+b? table: X | f(x) 0 | a 1 | 12 2 | b
*July 26, 2014*

**chemistry**

show you tried and I'll give you an hint ok?
*July 26, 2014*

**medical billing and coding**

a new technology that will change the role of the transcriptionist is
*July 26, 2014*

**chemistry**

*so, do
*July 26, 2014*

**chemistry**

First of all thanks for your help. I meant that reading around the web, NO2 at room tempearature is said to be a second order rection. If it was such, the graph of 1/C vs time should be a straight line, whose k is the rate. I did that, and those values are near but not ...
*July 26, 2014*

**chemistry**

you mean without ln, just dC/dt over C ? not a straight line. I've searched around and I am under the impressione that even if values don't align perfectly people still say it's second order reaction, is it? ratio of (1/t)/t are as follow: 0.7119 0.7081 0.8257 0....
*July 26, 2014*

**Calc**

A rancher wants to fence in an area of 1500000 square feet in a rectangular field and then divide it in half with a fence down the middle, parallel to one side. What is the shortest length of fence that the rancher can use?
*July 25, 2014*

**home economics**

The US government does not influence its economy true or false?
*July 25, 2014*

**Math 105**

To estimate the proportion p of defective light bulbs produced in a factory, a sample of 180 bulbs were tested. In this sample 27 were defective. We will compute a 95 percent confidence interval for p. Compute the margin of error e in esimating p at 95 percent level of ...
*July 25, 2014*

**math**

An equilateral triangle and a regular hexagon share a common side. The perimeter of the triangle is 20 cm. What is the perimeter of the hexagon?
*July 24, 2014*

**physics**

A bus and a car have an inelastic head-on collision. The bus has a mass of 1.5 × 103 kilograms and an initial velocity of +20 meters/second. The car has a mass of 9.5 × 102 kilograms and an initial velocity of -26 meters/second. What is their total momentum after ...
*July 24, 2014*

**M**

In printing an article of 21,000 words, a printer decides to use two sizes of type. Using the larger type, a printed page contains 1,200 words. Using the small type, a page contains 1,500worda. The article is alloted 16 full pages in a magazine. How many pages must be in the ...
*July 23, 2014*

**quant**

The president of Pegasus Corporation is trying to decide which of three candidates (denoted as candidates A, B, and C) to hire as the firm’s new vice president of Marketing. The primary criteria the president is considering are each candidate’s leadership ability, ...
*July 23, 2014*

**math**

out of every 220 packages of coffee 30 are in twelve oz bags, 60 are in 16 oz. bags and 110 are in 5 lb bags. 1100 packages were labeled in 8 minutes. how many packages are there of each?
*July 23, 2014*

**geometry**

She is defintley in Aops geometry. I have the same problem due this week.
*July 23, 2014*

**geometry**

Are you in Aops geometry?
*July 23, 2014*

**Poetry**

One difference between the English sonnet and the Italian sonnet is its
*July 22, 2014*

**math**

216 cubic feet
*July 22, 2014*

**mathematics**

Of the bundles delivered daily to the store, 1/3 consists of the morning edition of The Daily Sun. Another 2 bundles are made up of the afternoon edition of the same paper. Of the remaining bundles, 1/2 is regional, one is a local newspaper, and one is from another state. How ...
*July 22, 2014*

**math**

7680 words
*July 22, 2014*

**math**

A page in an average newspaper has 8 columns of print. Each column consists of 160 lines and each line averages 6 words. What’s the average number of words on a full page?
*July 22, 2014*

**chemistry**

What mass of cesium chloride must be added to 0.570 L water to produce a 0.375 m solution?
*July 22, 2014*

**english**

Many cultures have stories about trickster animals that fool human beings. These are usually hilarious.
*July 22, 2014*

**Math**

A man cheats 5% on the both side when buying and selling a products. find what will be the gain percent of the man?
*July 22, 2014*

**physics**

A car is released from rest on a frictionless inclined plane. (Figure: twitpic com/e8nkhj) Calculate the momentum pi at the end of the plane in terms of measured quantities x, y, l, and m. Assume θ is very small so that h/l ~= y/x. (Hint: use conservation of energy and K...
*July 21, 2014*

**finance**

six years ago singleton company issued 20 year bonds with a 14% annual coupon rate at their 1000 par value . the bonds had a 9% call premium, with 5 years of call protection. today singleton called the bonds. compute the realized rate of rate of return for an ivestor who ...
*July 21, 2014*

**Puntuation**

Dwayne had planned to take the last flight out to Chicago. It was cancelled, however, because of bad weather
*July 21, 2014*

**Math**

Lisa's livingroom is 17 feet wide. If the length is 4 feet more than twice the width, what is the area of her livingroom?
*July 21, 2014*

**Math**

A homeowner is laying sod in her lawn. The lawn is a rectangle with dimensions of 28'*18'. If one piece of sod is a rectangle with dimensions of 60cm*40cm, approximately how many pieces of sod should the homeowner order?
*July 20, 2014*

**physics**

P.E=mgh m=51kg g=9.8ms^2 h=2.8m 51*9.8*2.8=1399.44j
*July 20, 2014*

**chem**

With two dice, each numbered 1-6, there are two possible ways to roll a 3: Thus, for the outcome of 3 (a particular macrostate) there are 2 microstates. How many possible ways are there to roll a 6?
*July 20, 2014*

**Grammar**

was incarnate or was incarnated
*July 19, 2014*

**momentum**

322n
*July 19, 2014*

**math**

21 foot long and 12 feet wide 8foot high how many pieces of plywood will it t a ke to cover
*July 18, 2014*

**chemistry**

I got kc to be 0 but that has got be wrong
*July 18, 2014*

**math**

$3142.86, rounded to nearest hundredth
*July 18, 2014*

**math**

42. You split the total in half, one half is white the other half has 1/3 red filters meaning the 4 blue filters and 10 yellow filters represent 2/3. We now know that 1/3 of half of the lights is 7. 21 is one half of the lights 2 halves is 42.
*July 18, 2014*

**math**

If three exterior angles of a quadrilateral measure 125 degree, 85 degree,100 degree, find the measure of the interior angles of a quadrilateral?
*July 18, 2014*

**chemistry**

WOULD YOU WANT TO BE A SILICON RIBBON TWIRLER? (10/10 points) A silicon ribbon measuring 100 micron thick, 5 mm wide, and 1 m long has 5 volts applied across its long dimension. The resistivity of silicon is 640 ohm-m. How much current will flow through the ribbon? Express ...
*July 18, 2014*

**chemistry**

The weight of one atom of uranium is 238amu.its actual weight is
*July 18, 2014*

**MATH WORD PROBLEM**

TERRY HAS A BOARD THAT IS 4YARDS LONG. hOW MUCH NEEDS TO BE SAWN OFF TO MAKE THE BOARD 2FEET 8INCHES LONG?
*July 18, 2014*

**Math**

The ratio of dogs to cats at the pet storeis 1:4. If the pet shop has 7dogs, how many cats does it have?
*July 18, 2014*

**Math**

155.11
*July 17, 2014*

**physics**

128.7*80=10296
*July 17, 2014*

**physics**

How much heat must be added to 128.7 g of ice at 0 degrees Celsius to melt the ice completely? Answer = _____calories
*July 17, 2014*

**physics**

How much heat must be added to 128.7 g of ice at 0 degrees Celsius to melt the ice completely? Answer = _____calories
*July 17, 2014*

**Calc**

Thank you Damon! You're a life saver. :)
*July 17, 2014*

**Calc**

Give a 4-term left Riemann sum approximation for the integral below. 16 ⌠ 3*((x+2)^(1/2)) ⌡ 12
*July 17, 2014*

**Calc**

Your velocity is given by v(t)=1 t2+2 in m/sec, with t in seconds. Estimate the distance, s, traveled between t=0 and t=8. Use the average of the left and right sums with 4 subdivisions.
*July 17, 2014*

**Calc**

Year 1940 1950 1960 1970 1980 Rate of change (million people per year) 29 49 67 76 98 If the population in 1940 were 2158 million and if the population in 1980 were 4846 million, what would be the true total change in population?
*July 17, 2014*

**physics**

A man shoots a rifle at a height of 1.7 m above level ground. His aim is perfectly horizontal. At the same time the bullet leaves the barrel of the gun at 670 m/s, the shell casing is ejected with a velocity of 3 m/s, also perfectly horizontal to the ground (but at an angle of...
*July 17, 2014*

**math**

In the equation q-12=89 what is the value of q
*July 17, 2014*

**physics**

A standing wave has X nodes in a string Y m long The wavelength of this wave is ___ m rounded to the first decimal place.
*July 17, 2014*

**math**

The annual interest rate for a customer’s loan of $425 is 15.75%. What is the total dollar amount to be repaid on the loan, including principle and interest, for the entire year?
*July 17, 2014*

**Grammar**

Get eaten or got eaten or gets eaten.. I am very confused! Please explain the grammar rules and give some examples.. Is this right? The fish got eaten by a shark. "get eaten by a shark" ..would be incorrect,right? What about.. The fish gets eaten by a shark ..???? Is...
*July 17, 2014*

**calculus**

N(t) = 120/(1+11e^(−0.4t) D. At what rate is the number of fruit flies increasing after 4 days?
*July 16, 2014*

**calculus**

The number of Drosophila fruit flies in a controlled experiment assumes the following growth pattern when the food source is limited: N(t) = 120/(1+11e^(−0.4t)) D. At what rate is the number of fruit flies increasing after 4 days?
*July 16, 2014*

**calculus**

Year 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 % having VCR 0.2 0.3 0.7 1.2 2.4 4.6 8.7 15.5 23.9 34.2 45.4 50.6 56.6 61.3 (a) During what year does the point of "diminishing returns" (i.e., the inflection point) appear to take place? ...
*July 16, 2014*

**calculus**

The number of Drosophila fruit flies in a controlled experiment assumes the following growth pattern when the food source is limited: N(t) = 120 1+11e−0.4t where t measured in days. A. How many fruit files were there in the beginning? B. What is the limiting number of ...
*July 16, 2014*

**calculus**

N(t) = 650 1+649 e−0.5 t . (You may wish to sketch a graph of N(t) to help you understand this situation and answer the questions below.) (a) How many people will have heard the rumor after 2 hours? After 12 hours? (b) When will half the people have heard the rumor? t...
*July 16, 2014*

**justice**

Locke’s purpose in examining the “state of nature” is:
*July 16, 2014*

**Math **

for all integers a, b, c, If a/b - 2c and a/2b + 3c then a/b and a/c Thanks for your help.
*July 16, 2014*

**Math**

A trundle wheel can be used to measure the walking distance between two locations. a) If the diameter of a trundle wheel is 45cm, how far will a person have walked when the wheel makes one full rotation? b) If a person walks for 0.7km, how many times has the wheel rotated? We ...
*July 16, 2014*

**math**

just. substitute b-2c fr0m 2b+3c first aq=b+2c..1,,ar=2b+3c ..b=aq-2c try to find c by replacing b by it is value so u will get c=a(2q-r)where 2q-r is an integer ..do the same for b ,u will get b=a(2r-3q)where 2r-3q is an integer. i hope that can help.
*July 16, 2014*

**math **

for all integers a, b, c, If a/b - 2c and a/2b + 3c then a/b and a/c Is a question from discrete mathematics Thanks for your help.
*July 16, 2014*

**Math **

Prove or disprove If a/b - 2c and a/2b + 3c then a/b and a/c
*July 16, 2014*

**American literature**

I don't know what your talking about because it's not plagiarize because i try the plagiarism checker . It's pass .
*July 16, 2014*

**American literature**

So what do you think about my answer?
*July 16, 2014*

**American literature**

In this story The Scarlet Letter, Hester Prynne to rebel from within the walls of her enemies’ territory. The rebellion is mainly an inner transformation. As she makes her rounds on the fringes of Boston. “In the cottage there were articles of comfort and luxury, ...
*July 16, 2014*

**American literature**

can you review my answer for me ?
*July 16, 2014*

**American literature**

5. Is Hester consistent in her rebelliousness?
*July 16, 2014*

**algebra**

A movie theater has 400 seats. Tickets at the theater cost $8 for students, $10 for adults, and $7 for senior citizens. On a night when all the seats were sold, the theater made $3,535 from ticket sales. If the number of adult tickets sold was 10 less than the number of ...
*July 16, 2014*

**algebra**

In their last basketball game, Becky scored twice as many points as Min. Together, they scored 42 points. How many points did Becky score?
*July 16, 2014*

**Calculus Help!**

Problem b is a little tricky but I can help. You found the price at 11.64. Use this. This just requires some thought. 11.64-7.5=4.14 <-the amount of price increase 4.14*95 <- how many people will not attend now Subtract how many will not attend now from max and there you...
*July 16, 2014*

**Calculus Help!**

At a price of $7.5 per ticket, a musical theater group can fill every seat in their 1500 seat performance hall. For every additional dollar charged for admission, the number of tickets sold drops by 95. a) What ticket price maximizes revenue? Round your answer to the nearest ...
*July 16, 2014*

**calculus**

C(q) = q3−60q2+1200q+760 for 0 ≤ q ≤ 50 and a price per unit of $551. Round your answers to the nearest whole number. a) What production level maximizes profit? q = b) What is the total cost at this production level? cost = $ c) What is the total revenue at ...
*July 16, 2014*

**calculus **

At a price of $7.5 per ticket, a musical theater group can fill every seat in their 1500 seat performance hall. For every additional dollar charged for admission, the number of tickets sold drops by 95. a) What ticket price maximizes revenue? Round your answer to the nearest ...
*July 16, 2014*

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