Tuesday

February 9, 2016
Total # Posts: 3,562

**abstract algebra **

Let R be a ring. The center of R is the set C= {x exists in R| ax=xa for all a in R}. Show that C is a subring of R.
*November 8, 2011*

**Finance**

Bond value and time--Constant required returns Pecos Manufacturing has just issued a 15-year, 12% coupon interest rate, $1,000-par bond that pays interest annually. The required return is currently 14%, and the company is certain it will remain at 14% until the bond matures in...
*November 7, 2011*

**chemistry**

How many grams of NaOH (MW = 40.0) are there in 100.0 mL of a 0.275 M NaOH solution?
*November 7, 2011*

**Math**

A bakery sold twice as many cookies in March as in April.Their total sales for the two months were 564 cookies.How many cookies were sold in April? a) 376 b) 282 c) 234 d) 188
*November 7, 2011*

**Statistics**

with a mean/median/mode value of 22 and a standard deviation of 17. Based on these numbers, we can say that approximately 50 percent of SOC 390 students work more than ____ hours per week? ..I don't understand how to figure this question out?
*November 7, 2011*

**Trigonometry**

Calculate and write result in a+bi form. 5+10i/3-4i
*November 6, 2011*

**physics emergency**

m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.6 kg that hangs vertically. The system starts from rest with the spring unextended...
*November 4, 2011*

**Math**

the time x (in days), that it takes a planet to revolve around the sun can be approximated by the equation x=0.407√(d^3),where d is the mean distance of the planet from the sun in millions of miles. It takes Venus approximately 226 days to complete one revolution of the ...
*November 3, 2011*

**Science**

191/4.25=44.9 km/hr
*November 2, 2011*

**Science**

a bus trip covers 191 km and takes 4 hours and 15 miniutes. What is the average speed of the bus in kilometers per hour?
*November 2, 2011*

**PHYSICS: Conservative Forces and Potential Energy **

A mass m = 18 kg is pulled along a horizontal floor with NO friction for a distance d =6.6 m. Then the mass is pulled up an incline that makes an angle θ = 38° with the horizontal and has a coefficient of kinetic friction μk = 0.44. The entire time the massless ...
*November 2, 2011*

**Science**

Plural Noun That Change Spelling .Write the plural noun for each singular noun. Wolf man tooth
*November 2, 2011*

**Computer Applications**

Microsoft Word makes it easier to organize and write documents concerning the reports that law enforcement officers have to fill out every they respond to a call for help and take down the events of what actually happened. They can also edit pictures Microsoft PowerPoint and ...
*November 2, 2011*

**Computer Applications**

How is Microsoft Word, Excel, and PowerPoint used in Criminal Justice?
*November 2, 2011*

**Opinions wanted**

Hi, Allyson. It is not written in the best grammar and the sentences are chopped. Try working on it some more.
*November 2, 2011*

**grammar**

unhappy,lonely, field goal, sport, bust, exploded,
*November 2, 2011*

**Chemistry**

How many milliliters of 0.201 M Ba(OH)2 solution are needed to completely neutralize 12.8 mL of 0.369 M HNO3 solution? The reaction is Ba(OH)2(aq) + 2HNO3(aq) → Ba(NO3)2(aq) + 2H2O(l)
*November 1, 2011*

**business law**

assuming the BOTH sides have rights. They do not. Artists, musicians, writers and others have ABSOLUTE control over their works and how they might be consumed, or distributed. The only right the public has is to buy it under the conditions offered or move on to something else...
*October 31, 2011*

**physics science**

if you wish to warm 95 kg of water by 20.0c for your bath how much heat is required
*October 30, 2011*

**social work**

no I did not but thank you
*October 28, 2011*

**social work**

My Question is “ What is a mediation model” Locate and read an article in the University Library related to a mediation model. Write a 350-word summary of your article. Be sure to address the following your summary: • Identify the setting and populations most ...
*October 28, 2011*

**social work**

Assignment reads Locate and read an article in the University Library related to a mediation model. Write a 350-word summary of your article. Be sure to address the following your summary: • Identify the setting and populations most appropriate for the model described in...
*October 28, 2011*

**Math**

Frank has eight quarters in his pocket.how much money does he have.
*October 27, 2011*

**Science**

Salim added 1 g of salt to each of four beakers filled with water. He stirred the water at different speeds, and recorded how long it took for the salt to dissolved. Stirring Time (sec) No stirring 25 Slow stirring 18 Medium stirring 10 Fast stirring 6 Which conclusion should ...
*October 25, 2011*

**government**

given that a major crisis facing the G20 is the value of the Euro in certain Euro zone countries, what role should the u.s. play? what is U.S. business exposure if the Euro zone collapses?
*October 25, 2011*

**Physics**

a system consists of four particles how many terms appear in the expression for the total gravitational potential energy of the system
*October 22, 2011*

**Math**

CRANES Season 1: Wins 38 Season 2: Wins 42 Season 3: Wins 31 Season 4: Wins 50 Season 5: Wins 31 Season 6: Wins 48 PANTHERS Season 1: Wins 36 Season 2: Wins 42 Season 3: Wins 40 Season 4: Wins 40 Season 5: Wins 42 Season 6: Wins 40 Which team had the better record? Justify ...
*October 20, 2011*

**Math**

Can you explain to me the procedure to get 32 tiles. Thank you for your help.
*October 20, 2011*

**chemistry**

A gas cylinder of volume 5.00 L contains 1.00 g of Ar and 0.500 g of Ne. The temperature is 275 K. Find the partial pressure of Ne.
*October 20, 2011*

**math**

Write a situation that can be represented by the algebraic expression $3.50t.
*October 18, 2011*

**Math**

Yes 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90
*October 18, 2011*

**Math**

The secret number has a 7 in the ones place.The tens number is an odd number.
*October 18, 2011*

**mary**

The secret number has a 7 in the ones place.Then tens number is an odd number.
*October 18, 2011*

**chemistry**

An object with a mass of 7.8 g raises the level of water in a graduated cylinder from 25.1 mL to 31.8 mL. What is the density of the object?
*October 18, 2011*

**Math**

The secret number has a 7 in the on place. The tens number is a ann odd number.
*October 18, 2011*

**Math**

Reasonnablenes the flag that Nico waves has an odd number in the ones place and even number in the tens place.what flag does he wave? Number on racing flag red flag 25 blue flag14 yellow 32 green flag 6 orange flag 17
*October 18, 2011*

**Chemistry Lab**

There would be no change in the solution color
*October 18, 2011*

**chemistry**

Have 250 mL of a 0.80 M solution of silver nitrate AgNO3 dissolved in water. how many grams of AgNO3 does the solution contain
*October 18, 2011*

**chemistry**

If the maximum sensitivity of absorbance is at 450nm would the same value of K be obtain at 400nm or 500nm? Please explain.
*October 18, 2011*

**MATH HELP PLEASE!**

Let c be a positive integer with 1<=c<=n. Show that the set: W ={ó exists in Sn such that ó(c)=c} is a subgroup of Sn. (The set W is called the stabilizer of c, because every element in W leaves c fixed.)
*October 14, 2011*

**Math**

1/8b = 6 what is b=
*October 13, 2011*

**chemistry - college **

Dry air has a density of 1.29g/L (@ 25 degrees Celsius & 1 atm of pressure). How many liters would 500.g of this air occupy?
*October 13, 2011*

**Physics**

A sled is being held at rest on a slope that makes an angle (theta) with the horizontal. After the sled is released, it slides a distance (d1) down the slope and then covers the distance (d2) along the horizontal terrain before stopping. Find the coefficient of kinetic ...
*October 13, 2011*

**Algebra-Help please**

Thank you very much Steve.
*October 12, 2011*

**Algebra-Help please**

Write the equation of the line parallel to the line y+2x+3 containing the point (2,6). Slope intercept form.
*October 12, 2011*

**Spelling vowels.**

I need the sinomo job , task
*October 12, 2011*

**operating car**

it is important to make sure that any person selling you a car has?
*October 12, 2011*

**Math**

25=53 25>53 53<25 53>25
*October 11, 2011*

**Math**

A blue jar has 25 marbles A red jar has 53 marbles .Which shows how to compare the number of marbles?
*October 11, 2011*

**Math**

My tens digit is double my one digit.I am less than 70 greater than 60.
*October 11, 2011*

**Math**

Journal one box hold 16 crayons another box jold 24 crayons. Write a sentence using word that compares the crayons in the the two boxes.
*October 11, 2011*

**Algebra 2**

Find an equation for the linear model of the situation below and use it to make a prediction. A train is traveling north at a constant rate. At 3:00 P.M. it is 55 miles north of a city. At 4:15 P.M. it is 80 miles north of the city. If d represents the distance in miles, and t...
*October 11, 2011*

**Mathematics**

If a brick weighs exactly as much as a 9-pound rock plus falf of another brick, what does a brick and a half weigh?
*October 9, 2011*

**chemistry**

How does Le Chatelier's principle explain the result you obtained when you added HCL to a suspension of Ca(OH)2 in water? Where the result was, precipiatate dissappeared and an increase in temperature resulted.
*October 9, 2011*

**Chemistry**

How does Le Chatelier's principle explain the result you obtained when you added HCL to a suspension of Ca(OH)2 in water?
*October 9, 2011*

**math**

Ture or false questions: Your teacher gives a true-false pop quiz with 10 questions. Show that the number of possible outcomes for the sample space of possible sequences of 10 answers is 1024. I got false and the number is 182 but dont think I have the right number. Some help me.
*October 9, 2011*

**Physics**

To create artificial gravity, the space station shown in the drawing is rotating at a rate of 0.600 rpm. The radii of the cylindrically shaped chambers have the ratio rA/rB = 3.00. Each chamber A simulates an acceleration due to gravity of 5.10 m/s2. Find values for (a) rA, (b...
*October 7, 2011*

**Physics**

The hammer throw is a track-and-field event in which a 7.30-kg ball (the hammer) is whirled around in a circle several times and released. It then moves upward on the familiar curved path of projectile motion and eventually returns to the ground some distance away. The world ...
*October 7, 2011*

**Math **

Jim uses his calculator to see if a number n having eight or fewer digits is divisble by a number d. He finds that n / d has a display of 32. Does d|n? Why? b. If n / d gives a display of 16.8, does d|n? Why?
*October 6, 2011*

**chemistry ASAP**

calculate the average atomic mass of element x in which the first isotope found in 28.5% abundance weighs 200.0 amu and the other isotope weighs 220.0 amu.
*October 5, 2011*

**chemistry ASAP**

calculate the average atomic mass of element x in which the first isotope found in 28.5% abundance weighs 200.0 amu and the other isotope weighs 220.0 amu.
*October 5, 2011*

**Math**

The smallest real number in the solution set of 2x > 6 is 4. A) True B) False - The smallest real number in the solution set of 2x > 6 is 3. C) False - The smallest real number in the solution set of 2x > 6 is a number greater than 3. For example, 3.01 is a real ...
*October 4, 2011*

**math elementary**

double the biggest number then take away one eg 4+4=8-1=7 that is the example of 4+3=7
*October 4, 2011*

**math**

a bird flies due north 2 miles then east 3 miles then north 4 miles then east 5 miles how far is the nest from the ocean
*October 4, 2011*

**statistics**

There are approximately 27 class days for Applied Statistics this semester. If you miss 3 classes, approximately what percent of the course have you missed?
*October 3, 2011*

**Algebra**

A roof rises 2.3 feet vertically, and 7.4 feet horizontally. What is the grade of the roof? I do not understand how to even find what the grade would be..can anyone help?
*September 30, 2011*

**math**

a piece of a fabric is cut into 12 lengths with 3 inches leftover.define a variable and write an expression for the length of the original piece
*September 29, 2011*

**Calculus**

An airplane is flying in still air with an airspeed of 325 miles per hour. If it is climbing at an angle of 20°, find the rate at which it is gaining altitude.
*September 29, 2011*

**chemistry**

With the aid of a labelled diagram,explain how molten Aluminium Oxide (bauxite) is electrolysed.
*September 29, 2011*

**Math - urgent**

Evaluate the definite integral 8 S (3x^2 + 3)/(x^2) dx 5 Not sure which substitution to use. Please show your work & explain. Thanks
*September 28, 2011*

**2nd grade math homework**

umm... yah duh
*September 27, 2011*

**Social Studies**

How did Henry the Navigator help more people explore??
*September 27, 2011*

**stast**

a populstion of n=6 score has sum=12 and sum square= 54 what isthe value of ss for this population?
*September 26, 2011*

**statstics**

a population of score has u=50 and standard devidation =10 if every score in the population is multipied by 2 the new mean and standard would be
*September 26, 2011*

**stast**

a populstion of n=6 score has sum=12 and sum square= 54 what isthe value of ss for this population?
*September 26, 2011*

**statistic**

a population of n = 100 score has u = 30 and standard deviation =4 what is the population variance
*September 26, 2011*

**math**

a bullet travels 1000 m in 1.17 seconds. what is the speed of the bullet
*September 24, 2011*

**Calculus**

Form a polynomial, f(x) with real coefficients having the given degree and zeros. Degree: 4 ; Zeros: 4i and 5i Really need help! don't know where to start.
*September 22, 2011*

**Financial management**

On December 31 of last year, Wolfson Corporation had in inventory 400 units of its product, which cost $21 per unit to produce. During January, the company produced 800 units at a cost of $24 per unit. Assuming that Wolfson Corporation sold 700 units in January, what was the ...
*September 22, 2011*

**math**

Number of People You Have Known Who Were Victims of Homicide # of Victims Frequency 0 3944 1 279 2 97 3 40 4 30 Find the median. Note that the “4 or more” category is not problematic for it. I know that the median is the middle number. I got 1.5 but book got 0. ...
*September 22, 2011*

**Math**

Number of People You Have Known Who Were Victims of Homicide # of Victims Frequency 0 3944 1 279 2 97 3 40 4 30 Find the median. Note that the “4 or more” category is not problematic for it. I know that the median is the middle number. I got 1.5 but book got 0. ...
*September 21, 2011*

**math**

THank u I was lost.
*September 21, 2011*

**math**

Number of People You Have Known Who Were Victims of Homicide # of Victims Frequency 0 3944 1 279 2 97 3 40 4 30 a. To find the mean, it is necessary to give a score to the “4 or more” category. Find it, using the score 4.5. (In practice, you might try a few different...
*September 21, 2011*

**chemistry**

A 13.5 g sample of X reacts with a sample of Y to form 81.1 g of XY. What is the mass of Y that reacted?
*September 19, 2011*

**Maths**

Evaluate the limit lim 7e(^-6x) as x -> infinity. Thanks
*September 19, 2011*

**Business **

Thank YOu
*September 18, 2011*

**Business **

Assignment is: One organization must compete in the domestic market and one in the global market, such as Southwest Airlines and Lufthansa. I want to do my paper on something else besides airlines like drug manufacturing but I do not know any company that is global any ideas I...
*September 18, 2011*

**guilford tech**

If you have swam one lap in a swimming pool, that means you have swam from one end to the other and back. In 2.5 h, a swimmer makes exactly 26 laps in a swimming pool that is 37 m long. Determine the distance the swimmer traveled, the total displacement of the swimmer, the ...
*September 17, 2011*

**University Math**

If f (x) = (x^2+5x+2)^2, find f'(x). Find f'(5). Please show your work and explain it so I can understand how to solve this. Thanks
*September 17, 2011*

**science**

WRITE, in no less than 300 words, a brief summary tracing the nutrition needs of both a man and a woman throughout the various stages of life. Address the nutritional needs for the following: Infants Teenagers Adults Women during pregnancy Older adults Post your response as a ...
*September 16, 2011*

**early childhood**

It is likely that a preschooler who learns to read early: a. will watch a lot of television b. will enjoy playing outdoors, as do other children c. will watch less television than other children d. will enjoy playing outdoors, as do other children and will watch less ...
*September 14, 2011*

**English**

Is the word 'with' capitalized in a title if it is located in the middle?
*September 14, 2011*

**biology**

Relate the various levels of organisms to those of nonliving entites. Use specific examples to explain your answers?
*September 13, 2011*

**governement **

i want a news article for my government class to write about what the American Press is saying about the government
*September 12, 2011*

**governement **

any criticism or support the American news is saying about the government.
*September 12, 2011*

**harding**

what is a modus ponens
*September 11, 2011*

**STRAYER**

If $795 is invested in an account that earns 11.75%, compounded annually, what will the account balance be after 27 years?
*September 10, 2011*

**Biology**

My answer was 3.13768 but I'm not sure if I did it right. I converted 28 mM to .028 moles, then multipled that by the molecular mass of NaC3H5O3.
*September 9, 2011*

**calculus**

find and correct any errors x-1 over (5-x) (-x)= 1-x over x (5-x)
*September 8, 2011*

**government **

how does reducing the national debt influence the American population?
*September 7, 2011*