Thursday

April 24, 2014

April 24, 2014

Post a New Question | Current Questions

**College Algebra**

I am new to this graphing calculator. I input y=5^x and y=(5^x)-3 It is graphed with tables showing x=-3 y1=-374/125 and y2=1/125 x=-2 y1=-74/25 y2=1/25 my question is what is the relationship between the graphs. I am unclear on what the question is asking
*Wednesday, June 26, 2013 at 2:02pm*

**Statistics**

A college admissions officer takes a simple random sample of 103 entering freshmen and computes their mean mathematics SAT score to be 493. Assume the population standard deviation is 112. What is the lower bound of the 99% confidence interval? Round your answer to the nearest...
*Wednesday, June 26, 2013 at 9:30am*

**college physics**

an atwood machine is constructed by mounting a well-lubricated pulley (not necessarily a ring/disc), whose radius is 6.00cm on an axle and passing a rope over the pulley. Each end of the rope is attached to a different mass of 3.0 kg and 2.0kg so they both hang vertically. ...
*Tuesday, June 25, 2013 at 9:11pm*

**College Algebra**

how do I find a 4th degree polynomial that has zeros; i,3i with f(-1)=60 I know the conjucants are -i and -3i (x-i)(x-3i) (x+i)(x=3i)
*Monday, June 24, 2013 at 3:01am*

**math check**

Consider the approximately normal population of heights of male college students with mean ì = 69 inches and standard deviation of ó = 4.6 inches. A random sample of 25 heights is obtained. (b) Find the proportion of male college students whose height is greater ...
*Saturday, June 22, 2013 at 10:36pm*

**Stats**

1. In a study of caffeine and stress, college students indicate how many cups of coffee they drink per day and their stress level on a scale of 1-10. The data appear below. Number of Cups of Coffee Stress Level 3 5 2 3 4 3 6 9 5 4 1 2 7 10 3 5 = 3.88 X= 5.13 s = 2.03 s = 2.90 ...
*Saturday, June 22, 2013 at 10:55am*

**math**

Varsity Press, a publisher of college textbooks, received a $70,000 promissory note at 12% ordinary interest for 60 days from one of its customers, Reader’s Choice Bookstores. After 20 days, Varsity Press discounted the note at the Grove Isle Bank at a discount rate of 14...
*Saturday, June 22, 2013 at 10:19am*

**math check**

While writing an article on the high cost of college education, a reporter took a random sample of the cost of new textbooks for a semester. The random variable x is the cost of one book. Her sample data can be summarized by the following. (Give your answers correct to two ...
*Friday, June 21, 2013 at 9:17pm*

**statistics**

If a teacher wants to test her belief that more than 5 students in college classes typically receive A as a grade, she'll perform? a. two tailed testing of a mean b. two tail testing of a proportion c. one tail testing of a proportion d. one tail testing of a mean I choose...
*Friday, June 21, 2013 at 6:03pm*

**contemporary math**

Varsity Press, a publisher of college textbooks, received a $70,000 promissory note at 12% ordinary interest for 60 days from one of its customers, Reader’s Choice Bookstores. After 20 days, Varsity Press discounted the note at the Grove Isle Bank at a discount rate of 14...
*Friday, June 21, 2013 at 4:41pm*

**Math**

Consider the approximately normal population of heights of male college students with mean ì = 69 inches and standard deviation of ó = 4.6 inches. A random sample of 25 heights is obtained. (b) Find the proportion of male college students whose height is greater ...
*Friday, June 21, 2013 at 9:33am*

**College Algebra**

20. Growth of an Account If Russ (see Exercise 19) chooses the plan with continuous compounding, how long will it take for his $60,000 to grow to $80,000? 3. (1/8) to the 2x-3= 16 to the x +1 13. e to the 4x= 4 to the x-2 15. ln (x-4) ln 3= ln(1/5) to the x power 20. Tripling ...
*Thursday, June 20, 2013 at 5:14pm*

**College Algebra**

Please help me ASAP!!!!!!!!!!!! I did the work on most of these problems but I am still confused please help. 19. Comparing Investments Russ McClelland, who is self-employed, wants to invest $60,000 in a pension plan. One investment offers 7% compounded quarterly. Another ...
*Thursday, June 20, 2013 at 5:07pm*

**math**

R. H. Bruskin Associates Market Research found that 30% of Americans do not think that having a college education is important to succeed in the business world. If a random sample of five Americans is s selected, find these probabilities. (a) Exactly two people will agree with...
*Thursday, June 20, 2013 at 11:42am*

**Math check**

While writing an article on the high cost of college education, a reporter took a random sample of the cost of new textbooks for a semester. The random variable x is the cost of one book. Her sample data can be summarized by the following. (Give your answers correct to two ...
*Wednesday, June 19, 2013 at 11:19pm*

**Business Math**

Varsity Press, a publisher of college textbooks, received a $70,000 promissory note at 12% ordinary interest for 60 days from one of its customers, Reader’s Choice Bookstores. After 20 days, Varsity Press discounted the note at the Grove Isle Bank at a discount rate of 14...
*Wednesday, June 19, 2013 at 9:13pm*

**College Accounting 211**

A company's predetermined overhead rate is $19.00 per direct labor hour and its direct labor wage rate is $16.00 per hour. Job A100 direct maerials cost is $280 and Direct Labor $240. 1. What is the total manufacturing cost assigned to Job A100? 2. If Job A100 consists of ...
*Wednesday, June 19, 2013 at 6:54pm*

**College Accounting 211**

A Corporation uses a predetermined overhead rate of $23.90 per direct labor hour. This predetermined rate was based on a cost formula that estmated $286,8000 of total manufacturing overhead for an estimated activity level of 12,000 direct labor hours. The company incurred ...
*Wednesday, June 19, 2013 at 6:01pm*

**writing process part 1 **

I need this paragraph proof read if that's OK. also need to know if it's a fully devolved the topic a high school diploma is important to my future. A high school diploma is important to my future for a number of reasons. The First being to attend college it is ...
*Tuesday, June 18, 2013 at 2:35am*

**college algebra**

a rectangular lot whose perimeter is 440 feet is fenced along three sides. an expensive fencing along the lot's length cost $16 per foot, and an inexpensive fencing along the two side widths costs only $11 per foot. The total cost of the fencing along the three sides comes...
*Tuesday, June 18, 2013 at 12:59am*

**MATH**

Complete Problem 34 in Section 5.2 Exercises (Ch. 5) of Essentials of Geometry for College Students. 34. Given: ABC,/ AD bisects <BAC, and /AE=/ED Prove: AE/AC = BD/BC
*Monday, June 17, 2013 at 10:46pm*

**math**

Varsity Press, a publisher of college textbooks, received a $70,000 promissory note at 12% ordinary interest for 60 days from one of its customers, Reader’s Choice Bookstores. After 20 days, Varsity Press discounted the note at the Grove Isle Bank at a discount rate of 14...
*Monday, June 17, 2013 at 11:41am*

**college algebra**

CRITICAL THINKING: Witout grouping symbols,the expression 2.3³+4 had a value of 58.Insert grouping symbols in the expression 2.3³ + 4 to produce the following values : 1. 62 2. 220 3. 4374 4. 279,936 Thanks ,please help me,i dont know what to do.
*Monday, June 17, 2013 at 5:26am*

**math help**

Consider the approximately normal population of heights of male college students with mean ì = 69 inches and standard deviation of ó = 4.6 inches. A random sample of 25 heights is obtained (e) Find P(x > 70). (Give your answer correct to four decimal places...
*Sunday, June 16, 2013 at 10:25pm*

**college algebra**

CRITICAL THINKING : Without grouping symbols,the expression 2.3³ + 4 has a value of 58.Insert grouping symbols in the expression 2.3³ + 4 to produce the following values : 1. 65 2. 220 3. 4374 4. 279,936 Please help me. Show all how you solve it..
*Sunday, June 16, 2013 at 4:18am*

**college algebra**

1.the temperature dropped 12 degree below a previous temperature of 37.5degree C.What was the resulting temperature? 2.What is the value of thirty-two more than a nine-fifths of the Celsius reading (degreeC),if the value of degree Celsius is 85?
*Sunday, June 16, 2013 at 4:07am*

**college algebra**

What degree change is there when the temperature climbs from - 20degree fahrenheit to 15degree Fahrenheit?
*Sunday, June 16, 2013 at 3:55am*

**math**

Varsity Press, a publisher of college textbooks, received a $70,000 promissory note at 12% ordinary interest for 60 days from one of its customers, Reader’s Choice Bookstores. After 20 days, Varsity Press discounted the note at the Grove Isle Bank at a discount rate of 14...
*Saturday, June 15, 2013 at 2:06pm*

**College Accounting**

Recording federal income tax transactions and cash dividend transactions. Selected transactions of Divad Corporation during 2013 follow. Record them in the general journal. Analyze: What annual per share dividend was paid to common stockholders in 2013? Mar. 15 Filed the ...
*Friday, June 14, 2013 at 12:39pm*

**Math Help**

Consider the approximately normal population of heights of male college students with mean ì = 69 inches and standard deviation of ó = 4.6 inches. A random sample of 25 heights is obtained. (c) Find the standard error of this sampling distribution. (Give your ...
*Thursday, June 13, 2013 at 11:46pm*

**College Physics**

A 57.0 cheerleader uses an oil-filled hydraulic lift to hold four 110 football players at a height of 1.40 . If her piston is 19.0 in diameter, what is the diameter of the football players' piston? The density of the oil in the hydraulic system is 900 kg/m^3.
*Thursday, June 13, 2013 at 7:27pm*

**English**

Correct the errors in these quotations. I Have this homework, I don't know if I'm in the right track... 1."This is the hardest class I've ever taken. It's also the most rewarding. The teacher sets the bar high and I think that forces us to learn more,"...
*Tuesday, June 11, 2013 at 9:17pm*

**Statistics**

3. The following table gives a two-way classification of all basketball players at a university who began their college careers between 2004 and 2008, based on gender and whether or nor they graduated. Graduated Did Not Graduate Male 126 55 Female 133 32 a) P(female or did not...
*Tuesday, June 11, 2013 at 1:45pm*

**business management**

success in college requires:
*Tuesday, June 11, 2013 at 12:10pm*

**English Pls Writeacher Help me by checking my work**

Please replace the incorrect words with correct words in the following sentences using AP Style. There may be more than one error per sentence; all sentences contain at least one error. Use correct AP style, punctuation, grammar and spelling errors.) 1. Original: California&#...
*Monday, June 10, 2013 at 6:30am*

**math**

*The value of the z-score in a hypothesis test is influenced by a variety of factors. Assuming that all other variables are held constant, explain how the value of z is influenced by each of the following: a. Increasing the difference between the sample mean and the original ...
*Sunday, June 9, 2013 at 8:12pm*

**statistics**

A nutritionist studying weight gain for college freshmen obtains a sample of n = 20 first year student at the state college. Each student is weighed on the first day of school an again on the last day of the semester. The following scores measure the change in weight, in ...
*Sunday, June 9, 2013 at 6:09pm*

**College Level Physics**

A horse pulls a cart with a force of 145 newtons at an angle of 30 degrees above the horizontal and moves along at a speed of 2.5 m/s. How much work to the nearest kJ does the force do in 6 minutes?
*Sunday, June 9, 2013 at 4:21pm*

**math **

A small community college is hoping to raise enough funds to put together an endowment in which the scholarships will be paid for by only the interest earned from the endowment. Assuming they can earn an average of 7.50% for the APR and that only the interest would be spent ...
*Saturday, June 8, 2013 at 9:01pm*

**Statistics(math)**

(20.47 S-AQ) A sample survey interviews an SRS of 252 college women. Suppose (as is roughly true) that 71% of all college women have been on a diet within the past 12 months. Using Normal approximation, what is the probability (±0.001) that 77% or more of the women in ...
*Friday, June 7, 2013 at 12:46pm*

**Psychology**

One of the arguments against inherited racial differences in intelligence is based on data that shows: A. a college education reduces the gap between the IQ scores of white and black races. B. nutrition reduces the gap. C. scores for black test takers improve as they mature. D...
*Thursday, June 6, 2013 at 11:10am*

**College Algebra**

Suppose that the Quadratic equation had two X-intercepts. How could you use the intercepts to find the vertex?
*Wednesday, June 5, 2013 at 1:34pm*

**College Algebra**

When using the Quadratic formula, why is only necessary to examine the discrimant to determine if the equation only has real numbers?
*Wednesday, June 5, 2013 at 1:27pm*

**College math 1**

All the 32 subsets for (x,y,z,u,v)
*Monday, June 3, 2013 at 10:26am*

**Statistics**

In a study on caffeine and stress, college students indicated how many cups of coffee they drink per day and their current stress level on a scale of 1 to 10. Obtain the appropriate correlation coefficents.
*Sunday, June 2, 2013 at 5:11pm*

**Physics 1 College Level**

A planet/moon has a mass of 77.89 × 1023 kg and a radius of 7.9 × 106 meters. What is g on the surface to the nearest hundredth of a m/s2? Once again, not really sure where to go with this. Out of the 10 problems I've only had trouble with this and one other.
*Saturday, June 1, 2013 at 4:10pm*

**Physics 1 College Level**

If D = 3204 meters and d = 1247 meters in the figure, what is the magnitude of the force on the space ship to the nearest MN? Consider all three to be point masses. I'm not even sure to begin with this question. Any help will be much appreciated!
*Saturday, June 1, 2013 at 4:09pm*

**Statistic**

At one college, GPA's are normally distributed with a mean of 2.7 and a standard deviation of 0.5. What percentage of students at the college have a GPA between 2.2 and 3.2?
*Friday, May 31, 2013 at 7:41pm*

**math**

A poll of 100 students was taken at a no-residential college to find out how they got to campus. The results were as follows: 28 said car pools;31 said buses;and 42 said they drove to school in their own car alone. In addition, 9 used both car pools and buses;10 said both car ...
*Friday, May 31, 2013 at 11:15am*

**math**

A high school guidance counselor conducts a survey to find the student's first choice for a college major and found that 65% of students choose math. If three students are chosen at a random, what is the probability that at least one of them would choose math?
*Tuesday, May 28, 2013 at 3:25am*

**economics**

Pls Help. Not too sure how to do this question. Someone wants to set aside money for their newborn daughters college funds. He estimates she would need 25,000 on her 17, 18, 19 and 20, birthdays. If he plans to make uniform deposits starting 3 years from now and through her 16...
*Sunday, May 26, 2013 at 2:53am*

**MATH315 Elementry Statistics **

A researcher surveyed college students to study their opinion about the proposed change in smoking rules. The researcher asked a group of 30 students: 12 of them supported the change, 13 of them did not, and 5 had no opinion. This is not a binomial model because... A. ...there...
*Saturday, May 25, 2013 at 10:27pm*

**How to get quick responses to your math questions**

Math is a wide subject, ranging from K to 11, college and university. Then there is algebra, trigonometry, geometry, arithmetic, calculus, number theory, ... etc. Not all teachers answer all math questions (many do). If you would give a little more detail on which branch of ...
*Saturday, May 25, 2013 at 9:45am*

**statistics.urgent please help..**

A local college cafeteria has a self-service soft ice-cream machine. The cafeteria provides bowls that can hold up to 16 ounces of ice-cream. The food service manager is interested in comparing the average amount of ice-cream dispensed by male students to the average amount ...
*Thursday, May 23, 2013 at 10:32pm*

**college algebra**

calculating present value p=35,000(1.10)^-12
*Thursday, May 23, 2013 at 10:05pm*

**Frenchhhhhhhhhh**

Please help! I have to replace 1- avez-vous eu DES CADEAUX pour votre anniversaire? 2- tu as des COURS DE FRANÇAIS tous les jours? 3-elles ont beaucoup D'AMIS au collége??
*Wednesday, May 22, 2013 at 10:42am*

**final exam**

a study shown that 20% of all college textbooks cost at least $70.it is known that the standard deviation of the prices of all college textbook is $9.50.assuming that prices of all college textbooks follow a normal distribution, find the mean price of all college textbooks.
*Tuesday, May 21, 2013 at 8:46pm*

**Grammar (Ms. Sue)**

Rewrite the sentences below that contain errors in pronoun-antecedent agreement. If a sentence is correct, write "correct." 1. Some of my friends wrote to NASA in their spare time to find out how to become an astronaut. 2. Either civilians or military personnel many ...
*Monday, May 20, 2013 at 6:35pm*

**Grammar (Ms. Sue)**

Rewrite the sentences below that contain errors in pronoun-antecedent agreement. If a sentence is correct, write "correct." 1. Max is learning skills that you need to be an astronaut. 2. Some of my friends wrote to NASA in his spare time to find out how to become an ...
*Monday, May 20, 2013 at 5:37pm*

**Finance and literacy **

A college professor's compensation package includes the total cost of a $350-per-month health insurance plan, the total cost of a $45-per-month life insurance plan, and a salary of $65,000 per year. What is the yearly value of the compensation package?
*Monday, May 20, 2013 at 3:26pm*

**Math 208**

nico is saving money for his college education. He invests some money at 6%, and $1400 less that that amount at 5%. The investments produced a total of $172 interest in 1 yr. how much did he invest at each rate?
*Monday, May 20, 2013 at 1:46pm*

**college of cape town**

A gas at 273 kelvin expands by 0,1 cubic metre if it is heated through 50kelvin. Calculate the original volume at constant pressure.
*Saturday, May 18, 2013 at 4:09am*

**math**

You want to have $85,000 college fund in 15 years. HOw much will you have to deposit now under the scenario below. Assume that you make no deposits into the account after the initial deposit An APR of 4% compounded daily. You should invest?
*Thursday, May 16, 2013 at 7:43pm*

**Math**

Kendall asked 40 randomly-selected seniors at his high school about their plans for after they graduated. Twenty-nine students said they planned to go to college. If there are 380 seniors at Kendall’s high school, estimate the number who plan to go to college.
*Thursday, May 16, 2013 at 5:45pm*

**college algebra**

graph y=-(1/2)x+1, (4,2) with steps to solve
*Thursday, May 16, 2013 at 12:37am*

**college algebra**

graph y=-(1/2)x+1, (4,2) with steps to solve
*Thursday, May 16, 2013 at 12:29am*

**College Algebra HELP**

Use the seven step method described in the book to graph the following rational function f(x)=(2x^2+x-3)/(2x^2-7x) 1) Determine the symmetry of the function 2) Find the y-intercept 3) Find the x-intercept 4) Find the vertical asymptotes 5) Find the horizontal asymptotes 6) ...
*Wednesday, May 15, 2013 at 10:19pm*

**College Algebra**

How do you work out this problem? 3x3 + 2x2 + 3x+2 I showed three different people my work an they said I did it wrong I am so confuse.
*Wednesday, May 15, 2013 at 4:05pm*

**College Algebra! help!**

Consider the following functions f(x)= (7x+8)/(x+3) and g(x)= (3x-8)/(7-x) (a) Find g(g(x)) (b) Find g(f(x)) (c) Determine whether the functions f and g are inverses of each other.
*Tuesday, May 14, 2013 at 10:32pm*

**College algebra**

Use the rational zeros theorem to find all the real zeros of the polynomial function. Use the zeros to factor f over the real numbers f(x)=9x^4+28x^3+66x^2+196x+21 Find the real zeros of f Use the real zeros to factor f f(x)=
*Tuesday, May 14, 2013 at 6:25pm*

**College Algebra**

For the given functions f and g, find the following and state the domain of each result. f(x)=√x;g(x)=7x-2 (a)(f*g)(x)= What is the domain of f*g? (b) (f/g)(x)= What is the domain of f/g?
*Monday, May 13, 2013 at 5:28pm*

**college algebra i**

x is less than or equal to 1 and greater than -5. how do i write this
*Monday, May 13, 2013 at 3:25pm*

**college algebra I**

68 is the product of Vanessa's age and 4. use the variable v to represent Vanessa's age. How do I write this expression
*Monday, May 13, 2013 at 3:05pm*

**college Chemisrty**

at what kelvin temperature will 25.2 of xe occupy a volume of 645 L at pressure of 732 torr?
*Monday, May 13, 2013 at 2:18am*

**College alegbra**

The population P of a city has been increasing at an annual rate of 1.4%. It's population was 173 thousand in 1992. A. Find a formula for P(t), where t is the year and P is in thousands. B. Estimate the population in 2010, to the nearest thousand. C. In what year did the ...
*Sunday, May 12, 2013 at 4:23pm*

**College algebra**

The radioactive element has a half-life of about 28 years and sometimes contaminates the soil. After 47 years, what percentage of a sample of the elements remain?
*Sunday, May 12, 2013 at 4:20pm*

**College algebra**

Use the properties of logs to write the expression as one log: 8log(base 5)4th square root of x minus 4log(base 5) x
*Sunday, May 12, 2013 at 4:18pm*

**ashford**

16. 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 ...
*Sunday, May 12, 2013 at 10:25am*

**College Algrebra Math 133 unti 1 IP 1**

Suppose the width of a rectangle is 5 inches shorter than the length and that the perimeter of the rectangle is 80 inches. The formula for the perimeter of a rectangle is P=2L + 2W. Set up an equation for the perimeter involving only the L the length of the rectancle. And ...
*Saturday, May 11, 2013 at 10:31am*

**College Chemistry 104 **

Students are attempting to construct a battery in the laboratory that will light up a light bulb. Compare the following lists prepared by students and determine which student will not be able to successfully build a "battery" that will light up the bulb. Student 1 ...
*Friday, May 10, 2013 at 10:28am*

**Math**

The number of professors in a college is p and the number of students is s, there are 16 times as many students as professors write an algebraic expression that shows the relationship.
*Thursday, May 9, 2013 at 2:27pm*

**Math**

5. The following random sample was selected : 4, 6, 3, 5, 9, 3. Find the 95% confidence interval for the mean of the population. 6. In a sample of 35 high school seniors, 14 of them are attending college in the fall. Find the 95% confidence interval for the true proportion of ...
*Thursday, May 9, 2013 at 1:17pm*

**Math**

2500 students take a college entrance exam. The scores on the exam have an approximate normal distribution with mean u = 52 points and a standard deviation o = 11 points. Estimate the percentage of students scoring 52 points or more. ^ How would you do this?
*Tuesday, May 7, 2013 at 11:25pm*

**College Chemistry 104**

A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 C. The initial concentrations of Pb+2 and Cu+2 are 0.0500 M and 1.50 M, respectively. A. What is the initial cell potential? B. What is the cell potential when the concentration of Cu+2 has fallen to ...
*Tuesday, May 7, 2013 at 11:50am*

**ENGLISH**

5. Which one of the following sentences contains an unnecessary colon? A. Here's the question on all of our minds: Will our team be able to defeat their arch rivals tonight? B. My store list included: milk, soup, chicken, and ice cream. C. She wants one thing: a new job. ...
*Monday, May 6, 2013 at 12:34pm*

**college physics**

a water skier is being pulled by a tow rope attached to a boat. as the driver pushes the throttle forward,the skier accelerates. a 70.3kg water skier has an initial speed of 6.10m\s. determine the work done by the net external force acting on the skier.
*Monday, May 6, 2013 at 11:21am*

**college algebra**

i need help with elimination and substitution linear equation
*Sunday, May 5, 2013 at 11:04pm*

**Math- Statistics **

Suppose 60% of adults have a college degree. If I take a random sample of 80 adults, what is the probability at least 50% of them have a college degree?
*Sunday, May 5, 2013 at 10:57pm*

**college Chemistry**

What would you expect to be the chemical names of the main gases that were dissolved in the tap water?
*Sunday, May 5, 2013 at 11:54am*

**college Chemistry**

Conductivity test, what controls the brightness of the light? (hint: think about your tapwater abd NaCl results and why they were different)
*Sunday, May 5, 2013 at 11:37am*

**College Chemistry**

What must we know a given ionic salt to be able to predict whether is is a good or poor conductor, w/o testing its conductivity?
*Sunday, May 5, 2013 at 10:32am*

**college agebra**

(3xsquared-2x-1)(xsquared+x+5)
*Friday, May 3, 2013 at 9:08pm*

**Statistics**

1. A study of 40 people found that they could do on the average15 pull ups with a standard deviation of .6. Find the 99% confidence interval for the mean of the population. 2. A study of 50 pizza delivery workers found that they could make 6 deliveries per hour with a standard...
*Friday, May 3, 2013 at 11:45am*

**statistics**

A sample survey interviews an SRS of 263 college women. Suppose (as is roughly true) that 75% of all college women have been on a diet within the past 12 months. Using the Normal approximation, what is the probability (±0.001) that 82% or more of the women in the sample...
*Thursday, May 2, 2013 at 10:48pm*

**Statistics**

Assuming that the heights of college women are normally distributed with mean 66 inches and standard deviation 2 inches, what percentage of women are shorter than 72 inches?
*Thursday, May 2, 2013 at 5:39pm*

**college algebra**

I have been stuck on this problem for over a week and I don't even know how to start the problem. Parabola equation y= 4(100 - x^2/2500) x and y are measured in feet A. Find the length of the road across the bridge B. find the height of the parabolic arch at the center of ...
*Wednesday, May 1, 2013 at 9:07pm*

**math**

Assume you do not know the population standard deviation. describe how you form a 90% confidence interval to estimate the population mean age for students at Westwood College Online.
*Wednesday, May 1, 2013 at 10:01am*

**College chemistry**

The pH of blood is 7.4 and that of saliva is 6.4. what is the difference in pH between these two solutions? How much more Hydronium ion (H3O+) is in the saliva than in the blood. I need a detailed answer with the formulas if you can. I have a hard time with chemestry
*Tuesday, April 30, 2013 at 3:38pm*

**Math**

A national study reports that 20% of college freshman have GPA above 3.5. We wish to determine if the corresponding proportion is higher at a local university. To conduct the test we select a random sample of 100 freshmen and determine that 26 of them have GPA above 3.5. Run ...
*Tuesday, April 30, 2013 at 11:39am*

**College Algebra and Number Theory**

SETS Let S1, ... , Sn be sets satisfying the following condition: Sj ¡ö Sj+1 for all 1 ¡Â i ¡Â n - 1. Find S1 ¡û S2 ¡û¡¦ ¡ûSn and S1 ¡ú S2 ¡ú ¡¦ ¡&...
*Sunday, April 28, 2013 at 7:51pm*

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