Thursday

November 27, 2014

November 27, 2014

Post a New Question | Current Questions

**college physics**

What distance will a 10 hp motor lift a 2000 lb elevator in 30 s? What was the average velocity of this elevator during the lift?
*Friday, November 11, 2011 at 10:00pm*

**college math**

use long division 1.2x3+3x2-17x+1 /x-2 2.y3+3y2+1 /y-2 3.n5-n2 /n2-n
*Friday, November 11, 2011 at 2:23pm*

**MATH**

Assume that the population of heights of male college students is approximately normally distributed with mean of 72.15 inches and standard deviation of 6.39 inches. A random sample of 96 heights is obtained. Show all work. (A) Find P (x > 73.25) (B) Find the mean and ...
*Friday, November 11, 2011 at 1:20pm*

**college algebra**

The area of a rectangular swimming pool is given by 4x^2+19x+12ft^2.One side length of the pool is given by 4x + 3 feet. What is an algebraic expression for the other side length of the pool?
*Friday, November 11, 2011 at 5:28am*

**pre- calc**

area of a parking lot: One campus of Houston community college has plans to construct a rectangular parking lot on land bordered on one side by a highway. there are 640 feet of fencing available to fence the sides. let x represent the length of each off the two parallel sides ...
*Thursday, November 10, 2011 at 7:57pm*

**stats**

This week we practice with Binomial Distribution. You can use Appendix Table E or Excel Function Binomdist. About 30% of adults in United States have college degree. (probability that person has college degree is p = 0.30). If N adults are randomly selected, find probabilities...
*Thursday, November 10, 2011 at 5:18pm*

**College Statistics**

A random sample of greeting cards is a mean value of $2.55 and a standard deviation of $0.44 So construct a 95% confidence interval estimate of the mean value of all cards in the store's inventory. So if the 2500 cards in the inventory then how are the results in assisting...
*Wednesday, November 9, 2011 at 10:11pm*

**college chemistry**

what is the molarity of NaF in the final solution if a solution was prepared by mixing 35.0mL of 0.200M NaF with 28.5mL of 0.350M NaF
*Wednesday, November 9, 2011 at 11:14am*

**college math excursions**

what is the next number sequence for 0,10,24,56,112,190
*Tuesday, November 8, 2011 at 11:03am*

**College economics**

The long-run supply curve for a good is a horizontal line at a price $3 per unit of the good. The demand curve for the good is QD = 50-2P. (a) What is the equilibrium output of the good? (b) A $1 excise tax is imposed on the good. What will be the long-run effect on the ...
*Tuesday, November 8, 2011 at 9:31am*

**Math College**

A 6-sided die is rolled 14 times. What is the probability of seeing a "6" at least 2 times? I am sooo clueless please help!
*Monday, November 7, 2011 at 2:25pm*

**college math**

20. Calculate the range, variance, and standard deviation of the following data set: 5, 5, 6, 6, 6, 8, 8, 8, 8, 10, 10, 11, 12, 12, 20 (Points: 5) Range = 15; Variance = 225; Standard Deviation = 7.5 Range = 3.85; Variance = 14; Standard Deviation = 3.74 Range = 20; Variance...
*Monday, November 7, 2011 at 1:41pm*

**college math**

18. Please answer questions 18-19 using the following information: Class Scores Frequency - f Lower limit < score < upper limit 20-30 6 30-40 10 40-50 12 50-60 8 60-70 4 What is the probability that a selected observation is between 40 and 50? (Points: 5) 0.25 0.30 0.40...
*Monday, November 7, 2011 at 1:40pm*

**college math**

16. A study of a manufacturing process indicates that 120 of 6,000 units produced are defective. If a sampler selected 100 units, how many defective units would he expect to be present? (Points: 5) 2 5 6 10 17. Six red balls and four blue balls are placed in a container. What ...
*Monday, November 7, 2011 at 1:39pm*

**college math**

15. Records at a high school indicate that each year for the past five years, 120 of the 1,500 students were absent on the first day of hunting season. What is the likelihood that a particular student will be absent on the first day of hunting season this year? (Points: 5) 0....
*Monday, November 7, 2011 at 1:35pm*

**college math**

14. A probability is always expressed as a value from: (Points: 5) 0 and 1. -1 and 1. 0 and 100. 0 and 10.
*Monday, November 7, 2011 at 1:34pm*

**college math**

10. For questions 10-13, use the following data: 13 29 41 60 89 14 26 53 7 14 What is the arithmetic mean of the data? (Points: 5) 20 14 34.6 82 11. What is the range of the data? (Points: 5) 14 34.6 82 50 12. What is the variance of the data? (Points: 5) 231.04 616.64 685.16...
*Monday, November 7, 2011 at 1:25pm*

**college math**

8. Sample data on employee age for a large auto parts manufacturer are as follows: Employee Age Frequency 25-29 25 30-34 33 35-39 62 40-44 26 45-49 31 50-54 8 What is the mean age of the employees? (Points: 5) 37 37.32 37.78 38.83
*Monday, November 7, 2011 at 1:02pm*

**$$college algebra$$**

Consider g(x) = -2x2 + 36x - 142 for x > 9. Find g-1(12). If this value does not exist, the type DNE in the space provided.
*Sunday, November 6, 2011 at 10:10pm*

**---college algebra (average rate of change)---**

Find the average rate of change of g(x) = -2x2 + 36x - 142 on the interval from x = -5 to x = 10.
*Sunday, November 6, 2011 at 9:54pm*

**College Physics**

A steel piano string for the note middle C is about 0.68 m long and is under a tension of 400 N. If the fundamental frequency is 226 Hz, what is the string’s diameter?
*Sunday, November 6, 2011 at 8:49pm*

**College Physics**

A child plays on a bungee cord and oscillates with a certain frequency f. An adult with a mass that is 16 times greater than that of the child then uses the same bungee cord. What is the ratio of the frequency with the adult to the frequency with the child? I tried to answer ...
*Sunday, November 6, 2011 at 7:32pm*

**statistics**

Help me! Population of heights of college students is approximately normally distributed with a mean of 64.37 inches and standard deviation of 6.26 inches A random sample of 74 heights is obtained. Find the mean and standard error of the x bar distribution 2. Find P(xbar > ...
*Sunday, November 6, 2011 at 7:28pm*

**College Algebra**

Use rational root theorem and the factor theorem to help solve the following equation X4-2x3-13x2+38x-24=0
*Sunday, November 6, 2011 at 4:48pm*

**Physics (College)**

One simple model for a person running the 100 m dash is to assume the sprinter runs with constant acceleration until reaching top speed, then maintains that speed through the finish line. If a sprinter reaches his top speed of 10.8 m/s in 2.54 s, what will be his total time?
*Friday, November 4, 2011 at 11:22pm*

**Physics (College)**

A car starts from rest at a stop sign. It accelerates at 2.0 m/s^2for 6.0 seconds, coasts for 2.0 s, and then slows down at a rate of 1.5 m/s^2 for the next stop sign. How far apart are the stop signs?
*Friday, November 4, 2011 at 9:49pm*

**English-Urgent**

I have to find the subjects and verbs in all these sentences, please let me know if I did it correctly. Thank you. A guy whom I work with has a theory about college students. (Verb=work, has) (Subject=guy, theory) He believes that students' majors reflect their ...
*Friday, November 4, 2011 at 6:50pm*

**English**

Directions: Revise the following sentences to eliminate unnecessary shifts in tense, mood, voice, or person and number and between direct and indirect discourse. Most of the items can e revised in more than one way. Examples: • When a person goes to college, you face many...
*Friday, November 4, 2011 at 6:19pm*

*****college algebra*****

Let h(x) = x3/2(x - 7)1/3 and g(x) = 200x3 - 47x2 + 9017x + 3. Utilize this information to find the value of (g o h)(7). I worked it out and came up with the answer 1421313.733.... i feel like this isnt right... please feel free to comment :)
*Friday, November 4, 2011 at 1:41pm*

**college Algebra**

Find the number of years for $4800 to grow to $9400 at 6% compounded quarterly. Round to the nearest tenth of a year.
*Friday, November 4, 2011 at 1:25pm*

**College Algebra**

Evaluate the function y=2.55^(x+1) at the value x=1.83
*Friday, November 4, 2011 at 11:44am*

**college algebra**

Let g(x) = 0.5x + 18. Write the rule for g-1(x). Then, evaluate g-1(x) at x = 20. Enter this result in the space provided.
*Friday, November 4, 2011 at 8:44am*

**MATH**

Assume that the population of heights of male college students is approximately normally distributed with mean of 72.83 inches and standard deviation of 6.86 inches. A random sample of 93 heights is obtained. Show all work. (A) Find the mean and standard error of the x ...
*Thursday, November 3, 2011 at 4:39pm*

**College math **

Can you explain to me how to write 1/3 as a percent?
*Thursday, November 3, 2011 at 3:08pm*

**psychology**

Time Remaining: 1. If the concept is truck, the prototype might be: (Points: 5) a Ford pick up. bulldozer. gravel eighteen wheeler. personnel carrier. 2. If the prototype is block or ball, the concept is: (Points: 5) construction. toy. child. play. 3. All major cities have a ...
*Wednesday, November 2, 2011 at 9:45pm*

**psychology**

One of the arguments against inherited racial differences in intelligence is based on data that shows: (Points: 5) a college education reduces the gap between the IQ scores of white and black races. nutrition reduces the gap. scores for black test takers improve as they mature...
*Wednesday, November 2, 2011 at 9:37pm*

**Enriched College Writing**

I am reading an essay from Robert Bellah called, "Community, Commitment, and Individuality" and he mentions the phrase "community of memory and hope". What does he mean by this? Explaining it in simpler words would be very helpful! :) Thanks!!!!!!
*Wednesday, November 2, 2011 at 2:14pm*

**English**

Could you please check these sentences? Thank you. 1) Have you thought about (of?) selling your second-holiday home? Have you considered selling your house? 2) She mentioned selling her house and moving into a smaller one. She doesn't feel like having an ice cream. 3) ...
*Wednesday, November 2, 2011 at 10:16am*

**Anatomy**

Zeke and Drew are a couple of incoming freshmen hopefuls for the Ferrum basketball and football teams. They dont just want to have a shot at making the team; they feel they can be starters if they are well conditioned. Zeke is 6'7" and about 188 pds, and was a star on...
*Tuesday, November 1, 2011 at 11:28pm*

**Anatomy**

Zeke and Drew are a couple of incoming freshmen hopefuls for the Ferrum basketball and football teams. They dont just want to have a shot at making the team; they feel they can be starters if they are well conditioned. Zeke is 6'7" and about 188 pds, and was a star on...
*Tuesday, November 1, 2011 at 11:19pm*

**College Physics**

A simple Atwood’s machine uses a massless pulley and two masses m1 and m2. Starting from rest, the speed of the two masses is 6.7 m/s at the end of 6.1 s. At that time, the kinetic energy of the system is 85 J and each mass has moved a distance of 20.435 m Find the value...
*Tuesday, November 1, 2011 at 8:53pm*

**COLLEGE**

My parents say I should be a doctor but I want to be what I want. They're forcing me to be one cause the rest of my family is. WHAT SHOULD I DO? D:
*Tuesday, November 1, 2011 at 7:25pm*

**hw check eng**

1. Jordan was studying for his criminal justice exam, and his brother offered to help him study. He went over each of the questions with him. a. Jordan was studying for his criminal justice exam, and his brother offered to help him study; so he went over each of the questions ...
*Tuesday, November 1, 2011 at 7:05pm*

**College algebra**

system of linear equation The sum of 3 numbers is 14 the largest is 4 times the smallest the sum of the smallest and twice the largest is 18 what are the 3 numbers? show work? A. how many unknowns you have? -how many equations need to be solve for that many unknown? B. what ...
*Tuesday, November 1, 2011 at 6:34pm*

**HOMEWORk check english**

1. Jordan was studying for his criminal justice exam, and his brother offered to help him study. He went over each of the questions with him. a. Jordan was studying for his criminal justice exam, and his brother offered to help him study; so he went over each of the questions ...
*Tuesday, November 1, 2011 at 4:34pm*

**Homework check english**

1. Jordan was studying for his criminal justice exam, and his brother offered to help him study. He went over each of the questions with him. a. Jordan was studying for his criminal justice exam, and his brother offered to help him study; so he went over each of the questions ...
*Tuesday, November 1, 2011 at 1:52pm*

**statistics**

Suppose a random sample of 25 students is selected from a community college where the scores in the final exam (out of 125 points) are normally distributed, with mean equal to 112 and standard deviation equal to 12. Find the probability that the sample mean deviates from the ...
*Monday, October 31, 2011 at 5:33pm*

**College Chemistry**

One mole of H2O(g) at 1.00 atm and 100.°C occupies a volume of 30.6 L. When one mole of H2O(g) is condensed to one mole of H2O(l) at 1.00 atm and 100.°C, 40.66 kJ of heat is released. If the density of H2O(l) at this temperature and pressure is 0.996 g/cm3, calculate &...
*Monday, October 31, 2011 at 3:21pm*

**College Chemistry**

As a system increases in volume, it absorbs 52.5 J of energy in the form of heat from the surroundings. The piston is working against a pressure of 0.500 atm. The final volume of the system is 58.0 L. What was the initial volume of the system if the internal energy of the ...
*Monday, October 31, 2011 at 3:18pm*

**College Chemistry**

Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 50. cm3. If the combustion of this mixture releases 955 J of energy, to what volume will the gases expand against a constant pressure of 675 torr if all the energy of combustion is...
*Monday, October 31, 2011 at 3:16pm*

**college algebra**

use the given zero to find the remaining zeros of each function.g(x)=x^3+3x^2+25x+75;zero:-5i
*Monday, October 31, 2011 at 1:35pm*

******college algebra******

Let h(x) = 3x + 4. For what value of x is (h o h)(x) = h(x). If no such value exists, type DNE in the space provided.
*Sunday, October 30, 2011 at 11:08pm*

******college algebra******

Let g(x) = -2x + 8 and h(x) = 3x + 4. For what value of x is composition (g o h)(x) = (h o g)(x). If no such value exists, type in DNE in the space provided.
*Sunday, October 30, 2011 at 11:00pm*

******college algebra******

Let g(x) be a rational function with a numerator of 6x2 + 12x - 48 and a denominator of 2x2 - 8. Use this information to evaluate g(8).
*Sunday, October 30, 2011 at 10:36pm*

**college algebra**

Let g(x) be a rational function with a numerator of 6x2 + 12x - 48 and a denominator of 2x2 - 8. Use this information to evaluate g(8).
*Sunday, October 30, 2011 at 10:33pm*

**math**

between 1998 and 2004, the number of college freshman who planned to get a professional degree computer science can be reasonably modeled by f(x)=-348.2x^2+1402x+13,679 where x=0 represenjts 1998. based on this model, in what year did the percent of freshman planning to get a ...
*Sunday, October 30, 2011 at 9:33pm*

**English**

Is "sinecure" used correctly in this sentence: He studied hard throughout college to get a sinecure job.
*Sunday, October 30, 2011 at 5:42pm*

**algebra**

i need help with my math for college, im currently a little behind, ive had 2 tutors but the tutors that ive had dont really know what there doing, this is stressful and im hopig someone who knows what there doing can help me
*Sunday, October 30, 2011 at 2:01pm*

**College**

borrowed $42,400 for 5 years interest rate 2.5%
*Sunday, October 30, 2011 at 2:01am*

**Intro To college math**

Find the future value, using the future value formula and a calculator. (Give your answer to the nearest cent.) $42.31 at 4.5% compounded semiannually for 4 years.
*Saturday, October 29, 2011 at 9:44pm*

**college algebra**

Find the bounds on the real zeros of the following function. f(x)=x^5-5x^4+8x+2
*Saturday, October 29, 2011 at 8:23pm*

**college algebra**

Form a polynomial, f(x), with real coefficients having the given degree and zeros. Degree 3; zeros: 1 + i and -10
*Saturday, October 29, 2011 at 8:20pm*

**college algebra**

Find the real and complex zeros of the following function. f(x)=x^3-3x^2+25x+29
*Saturday, October 29, 2011 at 8:16pm*

**college algebra**

Find the real and complex zeros of the following function. f(x)=x^3-3x^2+25x+29
*Saturday, October 29, 2011 at 8:16pm*

**college algebra**

Use the intermediate value theorem to determine whether the polynomial function has a zero in the given interval. f(x)=8x^5-4x^3-9x^2-9;[1,2]
*Saturday, October 29, 2011 at 8:12pm*

**college allgebra**

f(x)=x^6+4x^5+4x^4+3x^3-x^2-5x+4 Find the maximum number of real zeros, and Use Descartes's rule of signs to determine how many positive and how many negative zeros the function has. You do not need to find the zeros.
*Saturday, October 29, 2011 at 7:43pm*

**college algebra**

Solve the following equation in the real number system. Please show all of your work. 2x^3-3x^2-14x+15=0
*Saturday, October 29, 2011 at 7:34pm*

**college algebra**

list potential rational zeros f(x)=x^4+3x^2-4
*Saturday, October 29, 2011 at 7:07pm*

**math**

4. You have $55000 to invest, and two funds you would like to invest in. The You-Risk-It Fund yields 13% interest. The Extra-Dull Fund yields 7% interest. Because of the college financial aid implications, you don’t think you can afford to earn more than $6500 in interest...
*Saturday, October 29, 2011 at 2:10am*

**math**

1. You have $55000 to invest, and two funds you would like to invest in. The You-Risk-It Fund yields 13% interest. The Extra-Dull Fund yields 7% interest. Because of the college financial aid implications, you don’t think you can afford to earn more than $6500 in interest...
*Friday, October 28, 2011 at 10:05pm*

**math**

1. You have $55000 to invest, and two funds you would like to invest in. The You-Risk-It Fund yields 13% interest. The Extra-Dull Fund yields 7% interest. Because of the college financial aid implications, you don’t think you can afford to earn more than $6500 in interest...
*Friday, October 28, 2011 at 3:11pm*

**statistics**

okay , so I had this questions on quiz today and I dont even remember the question properly but i wanted to know how you solve so I can see if I got it right questions : Imagine a college student is looking her chances of getting interview calls from A= calgary B= california P...
*Thursday, October 27, 2011 at 9:05pm*

**College Math**

Make 300 mL of a 0.4M NaOH solution.
*Thursday, October 27, 2011 at 7:44pm*

**College Chemisrty**

There are 140 g of H2SO4 in 400 mL of a solution. What is the molarity?
*Thursday, October 27, 2011 at 7:41pm*

**probability**

out of 250 students interviewed at a community college, 90 were taking mathematics but not computer science, 160 were taking mathematics, and 50 were taking neither mathematics nor computer science. Find the probability that a student chosen at random was a. taking just ...
*Thursday, October 27, 2011 at 2:14pm*

**PSY Quiz**

Who can help me to double check my Quiz ....please? Question 1 of 10 According to Freud, the psychosexual stage that occurs during the first year of life is called the ___________ stage. A. Latency B. Anal ->C. Oral D. Phallic Reset Selection Question 2 of 10 Davey is a ...
*Thursday, October 27, 2011 at 12:06pm*

**HW CHECK**

What is the verb in the following sentence? (only one answer) 1. Many people believe that the economy is not the worst problem in America. a. Many b. believe c. is d. is not e. in What is the subject in the following sentence? (may be one or more) 2. Her problems, her ...
*Wednesday, October 26, 2011 at 7:36pm*

**ENGLISH HW CHECK**

Choose the correct answer for the ALL CAP word 1. My father always COMPLAINS that my sister's boyfriend is lazy. Answer a. complains b. complain c. complained d. complaining 2. Uncle Frisbee, who BE as bald as a grapefruit, buys every new hair-growing tonic he HAVE heard ...
*Wednesday, October 26, 2011 at 6:56pm*

**college math**

Aging in the United States In 2050, about 1 over 5 of the population will be aged 65 or over and about 1 over 20 of the population will be aged 85 or over. Estimate the fraction of the population that will be between the ages of 65 and 85 in 2050. (Source: U.S. Census Bureau.)
*Wednesday, October 26, 2011 at 11:07am*

**math**

a random sample of 42 college graduates who worked during their program revealed that a student spent an averge of 5.5 yeas on the job before being promoted. The sample standard deviation was 1.1 yrs. Using the .99 degree of confidence, what is the confidence interval for the ...
*Tuesday, October 25, 2011 at 10:46pm*

**College Algebra**

Show all work The manufacturer of a CD player has found that the revenue R (in dollars) is R(p)= -4p^2+1280p, when the unit price is p dollars. If the manufacturer sets the price p to maximize revenue, what is the maximum revenue to the nearest whole dollar?
*Tuesday, October 25, 2011 at 7:26pm*

**psychology**

A team of psychology students would like to expose their classmates to an embarrassing experience in order to gather data for their term project. Their instructor has asked them to read the ethical guidelines published by the American Psychological Association. She wants them ...
*Tuesday, October 25, 2011 at 4:16pm*

**College Chemistry**

when a 0.702g sample of a mixture of volatile hydrocarbons is burned in a bomb calorimeter with a heat capacity of 4287 J/C, the temperature rises by 4.72 degrees C. How much energy (in kilojoules) is released during combustion?
*Tuesday, October 25, 2011 at 4:15pm*

**College Chemistry**

Write formation reactions for the following. (You must include the states of matter for each atom or compound) A. Ca(NO3)2 (s) B. CH3OH (l) C. NaClO4(s)
*Tuesday, October 25, 2011 at 3:56pm*

**IT**

What steps would you take in diagnosing an application that has been changed from its original state? How does this affect the level of support required to facilitate Microsoft® Access® users? I need this for my college paper. Thanks
*Tuesday, October 25, 2011 at 2:48pm*

**college Chemistry**

molarity of hydrochloric acid=0.5 M-cost of tums package 150 tablets is 9.99 what is the cost of a single tablet
*Tuesday, October 25, 2011 at 2:33pm*

**College Algebra**

Show all work. A projectile is fired from a cliff 100 ft above the water at an inclination of 45 degrees to the horizontal, with a muzzle velocity of 260 ft/second. The height of the projectile above the water is given by h(x)= ((-32x^2)/(260)^2)+x+100, where x is the ...
*Monday, October 24, 2011 at 9:14pm*

**College Algrebra**

How would you use synthetic division to find the quotient and remainder for this problem: (X^3+3ix^2-4ix-2)/(x+i)
*Monday, October 24, 2011 at 5:06pm*

**persoanal finances**

What are the three steps of critical thinking? What do they include? How might mastery of these skills make you a more effective college student and adult learner?
*Monday, October 24, 2011 at 11:03am*

**College Chemistry**

a sample bulb contained 0.712g of H2(g) at a certain temperature and pressure. At the same temperature and pressure, the bulb can hold 13.0g of an unknown gas. What is the molar mass of the unknown gas?
*Monday, October 24, 2011 at 2:27am*

**College Algebra**

y varies directly as the third power x and inversely as Z. If y=16 when x=4 and z=8,find y when x=9 and z=6
*Sunday, October 23, 2011 at 9:58pm*

**college math**

A community 5K run will award $50 to the winner. 60 people enter the race, and they each pay an entry fee of $20. Assuming they are all equally likely to win, what is a fair price for the competition? Round to the nearest cent Can anyone help me get started on this one?
*Sunday, October 23, 2011 at 5:18pm*

**college physics**

A 0.384 kg puck, initially at rest on a horizon- tal, frictionless surface, is struck by a 0.189 kg puck moving initially along the x axis with a speed of 2.7 m/s. After the collision, the 0.189 kg puck has a speed of 1.7 m/s at an angle of 28 to the positive x axis. ...
*Saturday, October 22, 2011 at 12:04am*

**Math**

A college basket ball player makes 80% of her free throws. Suppose this probability is the same for each free throw she attempts. The probability that she makes all of her first four free throws and then misses her fifth attempt this season is
*Friday, October 21, 2011 at 12:08am*

**Finance**

5. John and Daphne are saving for their daughter Ellen's college education. Ellen just turned 10 (t=0), and she will be entering college 8 years from now (at t=8). College tution and expenses at State U. are currently $14,500 a year, but they are expected to increase at a ...
*Thursday, October 20, 2011 at 11:13pm*

**college chemistry**

Calculate the equilibrium concentration of H3O+ in the solution if the initial concentration of C6H5COOH is 6.0×10^-2. Kc=6.3 *10^-5
*Thursday, October 20, 2011 at 10:12pm*

**math**

a college lab paced two orders with a chemical supplier. the first order was for 13 bottles of calcium hydroxide solution and 4 bottles of sulfuric acid and totalled $ 487. the second order was for 6 bottles of calcium hydroxide solution and 2 bottles of sulfuric acid and ...
*Thursday, October 20, 2011 at 6:47pm*

**math**

a college lab paced two orders with a chemical supplier. the first order was for 13 bottles of calcium hydroxide solution and 4 bottles of sulfuric acid and totalled $ 487. the second order was for 6 bottles of calcium hydroxide solution and 2 bottles of sulfuric acid and ...
*Thursday, October 20, 2011 at 6:15pm*

**statistics**

A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The mean number of cups was 5 with a standard deviation of 1.5 cups. The distribution was normal. a. What proportion of students drank 7 or more cups of ...
*Thursday, October 20, 2011 at 2:23pm*

**Physics.. please help!!!!!**

A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 16 m/s at angle of 46◦ above the horizontal. The top of the fence is 4 m high. The ball ...
*Thursday, October 20, 2011 at 4:17am*

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