Thursday

January 29, 2015

January 29, 2015

Post a New Question | Current Questions

**college chemistry**

How will the Rf values be affected if i use a highly polar mobile phase instead of one that has intermediate polarity?
*Monday, February 11, 2013 at 4:51pm*

**college algebar**

5< x-2/6 <6
*Monday, February 11, 2013 at 1:26pm*

**Business Calculus**

Pam and Tim decide to start saving money for their daughter's college education. They open a college savings plan (529) with a 500 dollars initial investment and next month start to make monthly deposits of 120 dollars. If the account pays 8% compounded monthly, how much ...
*Monday, February 11, 2013 at 1:56am*

**college algebra**

Need to solve what are the steps to do so? 1.5<9.1-0.5x<6.8. <they are underlined. Thanks
*Sunday, February 10, 2013 at 12:47pm*

**college algebra**

I need to figure out how to solve this equation your help will be much appreciate:-) √5(x-1.2)-√3x<5(x+1.1)
*Sunday, February 10, 2013 at 12:45pm*

**STAT**

Functional foods are those containing nutritional supplements in addition to natural nutrients. Examples include orange juice with calcium and eggs with omega-3. Kolodinsky, et al. (2008) examined attitudes toward functional foods for college students. For American students, ...
*Sunday, February 10, 2013 at 1:46am*

**STAT**

Do you view a chocolate bar as delicious or as fattening? Your attitude may depend on your gender. In a study of American college students, Rozin, Bauer, and Catanese (2003) examined the importance of food as a source of pleasure versus concerns about food associated with ...
*Sunday, February 10, 2013 at 1:43am*

**college algebra**

Please show me the steps to solving this equation:-) √5(x-1.2)-√3x<5(x-1) Your help is greatly appreciated.
*Sunday, February 10, 2013 at 1:03am*

**College Algebra**

Hello - I am stuck on this problem and I'm in serious need of some help. I don't understand this question at all. The problem is: Find the equilibrium quantity and equilibrium demand function for the given: Supply: P=45q Demand: P=q^2+10,000
*Saturday, February 9, 2013 at 7:40pm*

**college chem**

Biphenyl, C12H10, is a nonvolatile, non ionizing solute that is soluble in benzene, C6H6. At 25 °C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 14.3 g of biphenyl in 25.8 g of benzene?
*Saturday, February 9, 2013 at 5:42pm*

**college algebra**

Write an equation of the line parallel to the line given by 3x-2y=8 and having the same y-intercept as the line given by 2y+3x=-4 (show work) I am stuck with this problem. Can you please show me how to do these types of equations? Thank you
*Saturday, February 9, 2013 at 1:53pm*

**College Algebra**

If the length of molding to create the frame is 96 inches. If the frame surrounding the picture is 3.5 inches wude and the length is 6 inches longer than the width, what are the dimensions (length and width) of the picture that could be placed inside?
*Friday, February 8, 2013 at 6:23pm*

**College Algebra **

for the sets {1,3,5,7,9} and {1,2,3,4,5} Define the ¿ and the U.
*Friday, February 8, 2013 at 6:15pm*

**7th grade language arts Ms. Sue please**

1. Which of the following is not a part of evaluating sources? (1 point) checking the author's credentials questioning possible bias making sure the information is current agreeing with the author's opinions 2. Which of the following websites would you most likely use ...
*Friday, February 8, 2013 at 5:47pm*

**english (theses writing)**

hello! :) I am a freshman college student and I am looking for a thesis topic about civil engineering.Can you give me a topic on my thesis about civil engineering? thanks :)
*Friday, February 8, 2013 at 7:39am*

**College Algebra**

The base of a 28 foot ladder is placed 12 feet from the house. How far up house does the ladder reach? (The answer to the nearest tenth of a foot
*Friday, February 8, 2013 at 12:28am*

**College Algebra**

The length of a rectangular carpet is 6 feet greater than twice its width. If the area is 72 square feet, find the carpet's length and width.
*Friday, February 8, 2013 at 12:13am*

**College Algebra**

The distance, d, in feet that an object falls in t seconds is modeled by the formula d=16t(2) if you dive from a height of 128 feet, how long will it take to hit the water? (answer may be in simplified radical form).
*Friday, February 8, 2013 at 12:08am*

**urgent urgent urgent**

A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. •Explain the chemical process that occurred ...
*Thursday, February 7, 2013 at 11:42am*

**college physics**

a rice grain is sitting on top of an apple, it slides down. where does it come off the apple? assuming the apple is a frictionless sphere. Find the angle with respect to the vertical diameter of the apple.
*Thursday, February 7, 2013 at 2:57am*

**college algebra**

I you are given two real numbers, explain how to determine which one is lesser.
*Thursday, February 7, 2013 at 1:09am*

**college algebra**

Median family income in country x between 1990 and 1999 can be modeled by f(x)=1144.7(x-1990)+35,834 where x is the year. Determine the median income was $42,303. I did it this way don't know if it's right f(x)=1144.7(x-1990)+35,834 42,303-35,834 = 1144.7 - (x-1990) + ...
*Wednesday, February 6, 2013 at 11:26pm*

**college algebra**

Median family income in country x between 1990 and 1999 can be modeled by f(x)=1144.7(x-1990)+35,834 where x is the year. Determine the median income was $42,303. I did it this way don't know if it's right f(x)=1144.7(x-1990)+35,834 42,303-35,834 = 1144.7 - (x-1990) + ...
*Wednesday, February 6, 2013 at 11:03pm*

**urgent urgent urgent**

A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. explain the process the muscle go through
*Wednesday, February 6, 2013 at 9:11pm*

**college algebra**

Passing thru point (1,4); perpendicular to 2x+y=5 How do I solve this? I think it might be this but not sure please let me know what step I left out Thanks:-) 2x+y=5 y=5-2x y=2x-5 M1=2 4=-1/2(1)+c=1+c C=4 Y=-1/4x-1
*Wednesday, February 6, 2013 at 7:07pm*

**College Algebra**

cubic root of 27x^4 y^13
*Wednesday, February 6, 2013 at 6:16pm*

**college enlish comp 1**

how to write a persasvie eassy on art is therapeutic
*Wednesday, February 6, 2013 at 9:59am*

**Physical Science**

I studied this 2 years ago in college and am no back in school. I can't remember any of this stuff and I really need to figure it out. Please Help Me!! The Latent Heat of Vaporization for water is 540. cal/g. How much heat (in calories) must be added to 10.0 g of water at ...
*Tuesday, February 5, 2013 at 10:05pm*

**College Algebra**

x^3-5x^2+4x-20 > 0 interval notation
*Tuesday, February 5, 2013 at 7:38pm*

**college matematics **

you are dealt one card from a standard 52 card deck find the probability of being dealt a heart
*Tuesday, February 5, 2013 at 4:33pm*

**College Algebra--Still Confused **

I have a few problems I need help with and also do have multiple choice. If I can have an explanation of how to get the answer that would be great. 1. Use the discriminant to determine whether the given equation has two irrational roots, two rational roots, one repeated root, ...
*Tuesday, February 5, 2013 at 11:18am*

**college chem**

calculate the amount of energy (in kj) necessary to convert 457 g of liquid water from 0 Celecius to water vapor at 167 celcius. the molar heat of vaporization (Hvap) of water is 40.79 jk/mol. the specific heat for water is 4.187 j/g celcius and for steam 1.99 j/mol celcius. (...
*Monday, February 4, 2013 at 11:03pm*

**college chem**

metallic iron crystallizes in a cubic lattice. The unit cell edge length is 287 pm. The density of iron is 7.87 g/cm^3. Calculate the mass (in grams) of one unit cell
*Monday, February 4, 2013 at 11:02pm*

**college chem**

europium crystallizes in a body-centered cubic cell (the Eu atoms occupy only lattice points). calculate the mass of the unit cells
*Monday, February 4, 2013 at 11:02pm*

**college chem**

calculate the amount of heat (in kj) required to convert 140.1 g of water to steam at 100c
*Monday, February 4, 2013 at 11:01pm*

**College Algebra**

I have a few problems I need help with and also do have multiple choice. If I can have an explanation of how to get the answer that would be great. 1. Use the discriminant to determine whether the given equation has two irrational roots, two rational roots, one repeated root, ...
*Monday, February 4, 2013 at 9:21pm*

**College Algebra help!!!**

I have to solve each equation using a u substitution and need help understanding how to do this. The first equation is: 1. x^2/3-2x^1/3-15=0 2. x+4=7 Squareroot x+4
*Monday, February 4, 2013 at 7:44pm*

**college chemistry**

How many grams would you weigh out to get 3.1 X 10-3 Moles of MgCl2?
*Monday, February 4, 2013 at 12:26pm*

**college mathematics **

Three people are to be selected at random, each will be given one gift card. There is one card from Home Depot,one from Best Buy and one from Red Lobster. The first person selected will get to choose between the two remaining cards. The third person selected gets the third ...
*Monday, February 4, 2013 at 10:30am*

**PLEASE CHECK THESE ANSWERS AMERICAN GOV**

1. The nerve center of the American Presidency is (C) the President’s Cabinet. the Executive Office of the President. the Congressional houses. the Civil Service. 2. Presidential elections include all of the following except (D) participatory caucuses. primary elections. ...
*Sunday, February 3, 2013 at 3:01pm*

**statistics**

1. The scores on a standardized test for high school students are normally distributed with a population mean of 500 and a population standard deviation of 100. Use the empirical rule (0LI refers to this as the standard deviation rule.). Make sure you provide graphs for each ...
*Sunday, February 3, 2013 at 12:26pm*

**Community technical college **

Given that 1st term of an A.P is 7 and it's 10th term is twice the second term,calculate the (a) 19th term (b)sum of 28 terms (c) difference between 9th and 6th terms
*Sunday, February 3, 2013 at 9:16am*

**college algebra**

Find y when x=1/2, if y=3/2 when x=10 How do you work this?
*Saturday, February 2, 2013 at 11:06pm*

**college general chemistry**

Calculate the volume of a rectangular solid with a thickness of 0.750 cm and an area of 8.25 cm2
*Saturday, February 2, 2013 at 10:22pm*

**college algebra**

Direct variation Find y when x=5, if y=7 when x=14 I think the answer is 2.5 but don't know for sure:-)
*Saturday, February 2, 2013 at 9:55pm*

**college algebra**

Slope intercept Vertical, passing (5,-1) Do you solve like this? M1= m/5-5m M=5
*Saturday, February 2, 2013 at 8:31pm*

**college algebra**

Write slope-intercept equation Passing thru the points (-6,-9) and (0,8) I think it's this just making sure: M=(8-(-9))/(0-(-6)) =17/6 Y= -17/6x+36/6 Y=-17/6x-6 M=17/6 and Y=-6
*Saturday, February 2, 2013 at 7:38pm*

**Math**

A random sample of 42 college graduates revealed that they worked an average of 5.5 years on the job before being promoted. The sample standard deviation was 1.1 years. Using the .99 degree of confidence, what is the confidence interval for the population mean?
*Saturday, February 2, 2013 at 3:20pm*

**basic college math**

write 14.825 as a faction
*Saturday, February 2, 2013 at 12:32pm*

**basic college math**

what is 4/13 written as a decimal?
*Saturday, February 2, 2013 at 11:52am*

**College Algebra**

3x^4=648x someone help please im so confused. i am trying to find the solution set?
*Friday, February 1, 2013 at 12:26pm*

**college chem**

A researcher explores the ideal gas equation. He measures the pressure of a system at different temperatures ( keeping the volume and moles of the gas constant) and creates a plot of P versus T. What is the slope of the line that results if the volume is 1.0L when 1.0 mol of ...
*Friday, February 1, 2013 at 12:09am*

**college algebrea**

(3x)/(x+2)=9-(6)/(x+2)
*Wednesday, January 30, 2013 at 10:37pm*

**penn foster**

im trying to finish these classes soon so i can start college, but honestly they are too complex. and i NEED HELP!!!! I have 1-5 done. 6. In the Mongol Empire, the plague A. provided new oppurtunities for territorial expansion B.ended further expansion C. had no effect, ...
*Wednesday, January 30, 2013 at 10:15am*

**College Chemistry**

what might be the reason that this is happening: During a simple distillation i have 14ml or 50/50 hexane;toluene mixture in a 25mL round-bottom flask. However, by the time i collected 8ml of distillate there were no liquid left in the flask.
*Tuesday, January 29, 2013 at 9:56pm*

**stats **

identify the independent and dependent variable A group of college students were given a short course in speed-reading. The instructor was curious if a monetary incentive would influence performance on a reading test taken at the end of the course. Half the students were ...
*Tuesday, January 29, 2013 at 7:30pm*

**college algebra**

Identify where f increases and where f decreases. f(x)=5x+3 I think it's (3,5) increases and (3,-2) decreases?
*Tuesday, January 29, 2013 at 5:49pm*

**Business English**

Which is recommended when including a career objective on the resume of a recent college graduate?
*Tuesday, January 29, 2013 at 1:27pm*

**English**

I have to write a letter of intent to a college stating why I am a good fit for their journalism program. In the rough draft, I wrote this sentence: "I follow current events on a casual, weekly basis." How can I sound a little more dedicated to my approach in this ...
*Tuesday, January 29, 2013 at 11:50am*

**college physics**

A cylindrical rod of cross-sectional area 5.0mm2 is made by joining a 0.30m rod of silver to a 0.12m rod of nickel. The silver end is maintained at 290K and the nickel end at 440K. given the thermal conductivities of silver and nickel are 0.42kWm-1K-1 and 91Wm-1K-1 ...
*Tuesday, January 29, 2013 at 9:40am*

**biology college**

which leukocyte is predominant in the blodd smear?explain by comparing it with other leukocytes and red blood cells in the blood smea
*Tuesday, January 29, 2013 at 8:56am*

**college algebra**

Find the domain: h(x)=√(x+4) How do I work this problem?
*Tuesday, January 29, 2013 at 12:49am*

**College Algebra**

Hello I need help with this problem. I need to identify if the equation is identity, contradiction, or conditional equation. -(5x-3)+2x=11-4(x+2)
*Monday, January 28, 2013 at 6:43pm*

**College Chemistry**

How many moles of aluminum do 2.66×10^24 aluminum atoms constitute?
*Monday, January 28, 2013 at 4:06pm*

**College Chemistry**

Upon decomposition, one sample of magnesium fluoride produced 1.66kg of magnesium and 2.56kg of fluorine. A second sample produced 1.25kg of magnesium.How much fluorine (in grams) did the second sample produce?
*Monday, January 28, 2013 at 3:34pm*

**writing**

Edit mMath Autobiography Theresa V. Monteiro MAT 095 11:00 AM – 12:15 PM My name is Theresa and I am from Norwalk Connecticut. I’ve been living here for a year now. I moved to New London Connecticut to start my life. I’ve taken care of all my immediate family ...
*Monday, January 28, 2013 at 11:59am*

**college chemistry**

calculate the specific heat for 18.5-g sample of tin that absorbs 183 J when its temp increases from 35.0 degrees celcius to 78.6 degress celcius. I don't know where to even start, help?
*Monday, January 28, 2013 at 9:38am*

**College Algebra **

Solve for the specified variable in each formula or literal equation Sn=n(a1+an/2) for n (sequences)
*Sunday, January 27, 2013 at 9:05pm*

**College Algebra**

Hello I need help with this problem. I need to identify if the equation is identity, contradiction, or conditional equation. -(5x-3)+2x=11-4(x+2)
*Sunday, January 27, 2013 at 8:45pm*

**Statistics**

A college’s data about the incoming freshmen indicates that the mean of their high school GPAs was 3.4, with a standard deviation of 0.35; the distribution was roughly mound-shaped and only slightly skewed. The students are randomly assigned to freshman writing sem- inars...
*Friday, January 25, 2013 at 11:57am*

**College Math**

how to construct a truth table for q w/upside down v~p, using the following: P: this is an orange q: the monkey is tall
*Thursday, January 24, 2013 at 10:31am*

**college algebra**

From 1988 to 2008 average annual tuition and fees at public colleges increased from $525 to $5500. Calculate the percent change over this time period. How do I set this up and solve it? Thanks for your help:-)
*Thursday, January 24, 2013 at 3:36am*

**college algebra**

(9.87x10^6)(34x10^11) I got 3.3558e19 but I don't think its right
*Wednesday, January 23, 2013 at 11:45pm*

**college algebra**

(9.87x10^6)(34x10^11) I got 3.3558e19 but I don't think its right
*Wednesday, January 23, 2013 at 11:45pm*

**College Finite**

Assume that you have a total of 9 people on the committee: 2 black males, 1 black female, 1 white male, and 5 white females. Party rules require that at least one black and at least one female hold one of the three offices. In how many ways can the officers be chosen while ...
*Wednesday, January 23, 2013 at 10:23pm*

**College Finite**

A student wants to buy 3 CDs, but assume that there are 3 CDs featuring the piano, 5 CDs featuring the trumpet, and 3 CDs featuring the saxophone. In how many ways can the selection be made if CD's featuring at least 2 different instruments are selected?
*Wednesday, January 23, 2013 at 10:00pm*

**college chemistry**

if a cheetah runs 60 miles per hour how many milliseconds will it take to run 33 meters
*Wednesday, January 23, 2013 at 7:16pm*

**college algebra**

13√9+16 |5-7|^2 I got 9.40 but I think I might have done it wrong
*Tuesday, January 22, 2013 at 7:05pm*

**college algebra**

Find the center and radius of the circle (x+3)^2+(y-5)^2=13 I think the center is (-3,5) Radius is (13) but I don't know how to show the work for it.
*Tuesday, January 22, 2013 at 5:19pm*

**College chemistry**

A farmer applies 13.50 kg of a fertilizer that contains 10.0% nitrogen to his fields each year. Fifteen (15.0%) percent of the fertilizer washes into a river that runs through the farm. If the river flows at an average rate of 0.265 cubic feet per second. What is the ...
*Tuesday, January 22, 2013 at 12:59pm*

**College Chemistry**

a mixture contains two crystalline solid X and Y. Decide if pure X can be obtained by a proper recrystallization using solvent A. Include the exact volumes of solvent used and the amount of pure X obtained. GIVEN: Solubility of X in boiling A :200mg/ml solubility of X at room ...
*Monday, January 21, 2013 at 11:49pm*

**College Algebra**

How would figure out the slope and intercepts: 1.4x= -14y
*Monday, January 21, 2013 at 10:56pm*

**MATHEMATICS**

Suppose you won a contest at 9th grade start that deposited $3,000 in an account that pays 5% annual interest compounded continuously. You go to college for four years (four years later). How much will you have then?
*Monday, January 21, 2013 at 10:29pm*

**College Algebra**

The load L a horizontal beam can safely support varies jointly as the width w and the square of the depth d and inversely as the length l. If a 12-foot beam with width 6 inches and depth 8 inches safely supports 600 pounds, how many pounds can a 14-foot beam that has width 5.5...
*Monday, January 21, 2013 at 8:06pm*

**College Algebra **

The expression x^2-7 is not factorable using integer values. But the expression can be written in the form X^2-(Square root7)^2 enabling us to factor it as a “binomial” and its conjugate: (x+square root 7)(x-square root 7) Use this idea to factor the following ...
*Monday, January 21, 2013 at 5:26pm*

**College Algebra**

I'm wondering how to answer this. The conjugate of 2-Square root 3 is?
*Monday, January 21, 2013 at 4:48pm*

**College Algebra **

I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each denominator. Assume all ...
*Monday, January 21, 2013 at 9:23am*

**math**

Twelve college students were surveyed about the distance from their house to the college they attended. 12 18 54 13 15 24 8 5 14 27 1 20 1. Using the data set above, find the percentile ranking for the data point 24. (is this 75th percentile? 2. Using the data set above, what ...
*Sunday, January 20, 2013 at 4:37pm*

**statistics help please!**

Twelve college students were surveyed about the distance from their house to the college they attended. 12 18 54 13 15 24 8 5 14 27 1 20 1. Using the data set above, find the percentile ranking for the data point 24. (is this 75th percentile? 2. Using the data set above, what ...
*Sunday, January 20, 2013 at 2:55pm*

**HELP PLEASE**

Twelve college students were surveyed about the distance from their house to the college they attended. 12 18 54 13 15 24 8 5 14 27 1 20 1. Using the data set above, find the percentile ranking for the data point 24. (is this 75th percentile? 2. Using the data set above, what ...
*Sunday, January 20, 2013 at 2:10pm*

**College Algebra help please**

I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each denominator. Assume all ...
*Sunday, January 20, 2013 at 11:47am*

**statistics**

Twelve college students were surveyed about the distance from their house to the college they attended. 12 18 54 13 15 24 8 5 14 27 1 20 1. Using the data set above, find the percentile ranking for the data point 24. 2. Using the data set above, what distance corresponds to ...
*Saturday, January 19, 2013 at 9:34pm*

**college math**

divide 2x^2-8x19 byx-3
*Saturday, January 19, 2013 at 9:17pm*

**Math**

At a college basketball game, the ratio of the number of freshmen who attended to the number of juniors who attended was 3 to 4. The ratio of the number of juniors who attended to the number of seniors who attended was 7 to 6. What was the ratio of the freshman to the number ...
*Saturday, January 19, 2013 at 2:50pm*

**College Algebra**

I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each denominator. Assume all ...
*Saturday, January 19, 2013 at 10:59am*

**Stadistics**

Select the most appropriate study design for each of the following questions. (Note: All study design options may not be used and each design option can be used more than once. 1. A study is done to examine the association between a mother’s education and risk of a ...
*Saturday, January 19, 2013 at 10:29am*

**anatomy**

Ineed to get better organized for college and family. I am only taking 7 credit hours but i find my self staying up late to study. I'm taking anatomy and psysiology along with math 098. Please give me advice on creating a study schedule. Thank you
*Friday, January 18, 2013 at 9:03am*

**college chemistry**

A 0.300 g sample of an aspirin tablet is used to prepare 100.0 mL of a stock solution by dissolving the tablet in 1 M NaOH then diluting with distilled water to the 100 mL mark of a volumetric flask. A 0.30 mL sample of the stock solution is then transferred to a volumetric ...
*Thursday, January 17, 2013 at 4:21pm*

**One college algebra ?**

Hello I have a question about a problem. The problem is (- 25/9)^3/2. Its multiple choice however I think they are tricking us. A. 125/27 B. - 125/27 C. 125/3 D. Not a real number I got A as an answer but feel that it is not a real number?
*Wednesday, January 16, 2013 at 10:16pm*

**economics**

Jesse and Kimberly recently graduated from college and are starting a family. Currently, they are just making ends meet with their $45,000 salary. They want to contribute the maximum amount (currently $2,000) to fully fund an Educational Savings Account when their baby is born...
*Wednesday, January 16, 2013 at 9:31pm*

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Post a New Question | Current Questions