Tuesday

July 29, 2014

July 29, 2014

Total # Posts: 70,610

**Math**

Let R be the statement : for all sets A, B and C, if A⊆B∪C and B ⊆C∪A then AΔB = C. Q: Is R true for all sets A, B and C? Prove answer Let S be the statement: for all sets A, B, and C, if AΔB = AΔC then B⊆C. Q: Is S true? prove answ...

**SAT WRITING**

Please give me a score of 1-6 (one being poor and six being excellent). Also, please give me some feedback! Thank you in advance! Essay prompt: What motivates people to change? Essay: Many people know that eating junk food is unhealthy. Yet, they keep eating it because it tast...

**Criminal justice **

what subject matter does the us supreme court not have the power to decide?

**Math (Discrete Math)**

Let R be the statement : for all sets A, B and C, if A⊆B∪C and B ⊆C∪A then AΔB = C. Q: Is R true for all sets A, B and C? Prove answer Let S be the statement: for all sets A, B, and C, if AΔB = AΔC then B⊆C. Q: Is S true? prove answ...

**SAT Writing**

Please give me a score of 1-6 (one being poor and six being excellent). Also, please give me some feedback! Thank you in advance! Essay prompt: What motivates people to change? Essay: Many people know that eating junk food is unhealthy. Yet, they keep eating it because it tast...

**Calculus**

Find the antiderivative, F(x), with F′(x) = f(x) and F(0) = 1. f(x) = −7 x

**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 0.05...

**physical**

what is cell

**physical science **

what is observed during an experiment of oxalic acid and sodium hydroxide

**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

**Algebra**

3(x-1) -2(x^2+3x+4)-5(x+9)=

**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?

**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? T...

**Science**

What do these symbols mean: 8=====> and ({!}) and ({8=!})?

**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

**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?

**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.

**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.

**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 befor...

**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?

**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...

**chemistry**

A sol n contains 37g cuso4 and 111g water . Calculate the concentration by mass /c of sol n.

**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?

**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...

**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 befor...

**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?

**Philosophy **

According to Aristotle, we should begin ethical inquiry by specifying

**math**

A2-b2 farmula

**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(...

** 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

**chemistry**

show you tried and I'll give you an hint ok?

**medical billing and coding**

a new technology that will change the role of the transcriptionist is

**chemistry**

*so, do

**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 particu...

**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 0.59...

**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?

**home economics**

The US government does not influence its economy true or false?

**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 confide...

**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?

**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 t...

**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 l...

**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, in...

**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?

**geometry**

She is defintley in Aops geometry. I have the same problem due this week.

**geometry**

Are you in Aops geometry?

**Poetry**

One difference between the English sonnet and the Italian sonnet is its

**math**

216 cubic feet

**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 ...

**math**

7680 words

**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?

**chemistry**

What mass of cesium chloride must be added to 0.570 L water to produce a 0.375 m solution?

**english**

Many cultures have stories about trickster animals that fool human beings. These are usually hilarious.

**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?

**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 ...

**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 purch...

**Puntuation**

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

**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?

**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?

**physics**

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

**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?

**Grammar**

was incarnate or was incarnated

**momentum**

322n

**math**

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

**chemistry**

I got kc to be 0 but that has got be wrong

**math**

$3142.86, rounded to nearest hundredth

**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.

**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?

**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 you...

**chemistry**

The weight of one atom of uranium is 238amu.its actual weight is

**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?

**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?

**Math**

155.11

**physics**

128.7*80=10296

**physics**

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

**physics**

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

**Calc**

Thank you Damon! You're a life saver. :)

**Calc**

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

**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.

**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?

**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...

**math**

In the equation q-12=89 what is the value of q

**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.

**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?

**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...

**calculus**

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

**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?

**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? Duri...

**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 fr...

**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 =...

**justice**

Locke’s purpose in examining the “state of nature” is:

**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.

**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 ...

**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.

**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.

**Math **

Prove or disprove If a/b - 2c and a/2b + 3c then a/b and a/c

**American literature**

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

**American literature**

So what do you think about my answer?

**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, suc...

**American literature**

can you review my answer for me ?

**American literature**

5. Is Hester consistent in her rebelliousness?

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