# Homework Help: College

**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 by Anonymous*

**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 begin ...

*Monday, May 20, 2013 by Anonymous*

**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 astronaut...

*Monday, May 20, 2013 by Anonymous*

**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 by dericka*

**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 by Jackie*

**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 by alistair jacobs*

**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 by emma*

**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 by Miae*

**college algebra**

graph y=-(1/2)x+1, (4,2) with steps to solve

*Thursday, May 16, 2013 by topaz*

**college algebra**

graph y=-(1/2)x+1, (4,2) with steps to solve

*Thursday, May 16, 2013 by topaz*

**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 by Rosie*

**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 by Crystal*

**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 by Rosie*

**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 by Alex*

**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 by Alex*

**college algebra i**

x is less than or equal to 1 and greater than -5. how do i write this

*Monday, May 13, 2013 by topaz*

**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 by topaz*

**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 by judy*

**College algebra**

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 by Taylor*

**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 by Taylor*

**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 by Taylor*

**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 by lisa*

**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 by Dana*

**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 large beaker...

*Friday, May 10, 2013 by Claire*

**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 by Ruth*

**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 by Anonymous*

**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 by Ruth*

**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 by Samm*

**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. D. ...

*Monday, May 6, 2013 by NANA*

**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 by jaret*

**college algebra**

i need help with elimination and substitution linear equation

*Sunday, May 5, 2013 by vivian*

**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 by Juliet*

**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 by judy*

**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 by judy*

**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 by judy*

**college agebra**

(3xsquared-2x-1)(xsquared+x+5)

*Friday, May 3, 2013 by jessica*

**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 by Cam*

**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 have ...

*Thursday, May 2, 2013 by dais*

**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 by RainbowGlitter*

**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 the ...

*Wednesday, May 1, 2013 by Karry*

**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 by ruby*

**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 by Liz*

**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 by Kathy*

**College Algebra and Number Theory**

SETS Let S1, ... , Sn be sets satisfying the following condition: Sj ¡ö Sj+1 for all 1 ¡ i ¡ n - 1. Find S1 ¡û S2 ¡û¡¦ ¡ûSn and S1 ¡ú S2 ¡ú ¡¦ ¡ú Sn

*Sunday, April 28, 2013 by Carol*

**Engineering**

A physics major is working to pay his college tuition by performing in a traveling carnival. He rides a motorcycle inside a hollow transparent plastic sphere. After gaining sufficient speed, he travels in a vertical circle with a radius of 13.4 . The physics major has a mass ...

*Sunday, April 28, 2013 by Lama*

**College Physics**

A uniform meter stick of mass M has an empty paint can of mass m hanging from one end. The meter stick and the can balance at a point 19.9 cm from the end of the stick where the can is attached. When the balanced stick-can system is suspended from a scale, the reading on the ...

*Saturday, April 27, 2013 by Mimi*

**english**

Questions about Avi(the author) Why was school a constant struggle for him? Avi kept writing because of the encouragement of his family and the help of whom? After college, what job did Avi take? where? When did Avi become interested in children's literature?

*Friday, April 26, 2013 by kara*

**Lincoln College Of New En**

A survey by Men’s Health magazine stated that 14% of men said they used exercise to reduce stress. Use a = 0.10. a random sample of 100 men was selected and 10 said that they used exercise to relieve stress. Use the P –value method to test the claim. Could the results be ...

*Friday, April 26, 2013 by Paula*

**Lincoln College Of New En**

it has been found that 85.6% of all enrolled college and university students in the U.S. are undergraduates. A random sample of 500 enrolled college students in a particular state revealed that 420 of them were undergraduates. Is there sufficient evidence to conclude that the ...

*Friday, April 26, 2013 by Paula*

**Lincoln College Of New En**

The percentage of physicians who are women is 27.9% in a survey of physicians employed by a large university health system, 45 of 120 randomly selected physicians were women. Is there sufficient evidence at the 0.05 level of significance to conclude that the proportion of ...

*Friday, April 26, 2013 by Paula*

**Lincoln College Of New En**

the Old Farmer’s Almanac stated that the average consumption of water per person per day was 123 gallons. To test the hypothesis that this figure may no longer be true, a researcher randomly selected 16 people and found that they used on average 119 gallons per day and s = 5...

*Friday, April 26, 2013 by Paula*

**Lincoln College Of New En**

the average 1-ounce chocolate chip cookie contains 110 calories. A random sample of 15 different brands of 1-ounce chocolate chip cookies results in the following calorie amounts, at the a = 0.01 level, is there sufficient evidence that the average calories contents is greater...

*Friday, April 26, 2013 by Paula*

**college Mathematics**

I am having problems with permutations what is 5P2 The answer I have is 20 am I wrong?

*Friday, April 26, 2013 by Carol*

**College math**

Please HELP! In a certain lottery game players choose a set of 6 distinct numbers from the numbers 1-50. How many combinations are possible if order is not important. Thanks sooooo much!

*Friday, April 26, 2013 by Lorie*

**College Physics**

A speck of charged dust with a mass of 39mu g. is kept levitating by putting it in an electric field. If you must apply a field of 10 N/C to keep it suspended in mid-air, what is the charge on the speck of dust? Can someone please help soon? I got this wrong on my last test ...

*Thursday, April 25, 2013 by Valerie*

**College Physics**

The rectangular coils in a 201-turn generator are 14 cm by 17 cm. What is the maximum emf produced by this generator when it rotates with an angular speed of 525 rpm in a magnetic field of 0.81 T? I'm not sure what equations to use.

*Thursday, April 25, 2013 by Valerie*

**College math**

Three coins are tossed. How many ways are there to get more than 2 tails, exactly 2 heads, only 1 tail. Thanks in advance for the help!

*Thursday, April 25, 2013 by Lorie*

**statistics**

0.57 of all college students like the idea of a new curriculum. If we select 88 students (ASSUME INDEPENDENCE), what is the Standard Deviation of (the Probability Distribution that would list the number of students (from 0 to 88) and the probability of each.) THE STANDARD ...

*Wednesday, April 24, 2013 by Matt*

**college algebra**

Solve the logarithmic equation. Log x +log2x = 4 Wouldn't this be no solution because log x is undefined?

*Wednesday, April 24, 2013 by Deb*

**statistics**

Suppose that the test scores for a college entrance exam are normally distributed with a mean of 450 and a standard deviation of 100. If a student is selected at random what is the probability that the student will score above 600?

*Wednesday, April 24, 2013 by kevin*

**College algebra**

20x^2+12x

*Wednesday, April 24, 2013 by James*

**Statistics**

Based on information from Harper's Index, 37 out of a random sample of 100 adult Americans who did not attend college believe in extraterrestrials. However, out of a random sample of 100 Americans who did attend college, 41 claim that they believe in extraterrestrials. At the ...

*Tuesday, April 23, 2013 by Torri*

**Business Math**

A Competitive Coup in the In-Flight Magazine. When the manager for market intelligence of AutoCorp, a major automotive manufacturer, boarded the plane in Chicago, her mind was on shrinking market share and late product announcements. As she settled back to enjoy the remains of...

*Tuesday, April 23, 2013 by Tameika*

**College algebra**

Solve equation by expressing each side as a power of the same base & then equating exponents. e^x+5=1/e^6

*Tuesday, April 23, 2013 by Erica*

**College Chem**

charles law: 7.89 l sample of gas had pressure of 850 torr. what volume will it occupy if the pressure is changed to 457 torr? (torr is a measurement of pressure. 760 torr = 1 atmosphere

*Monday, April 22, 2013 by judy*

**College: Diversity Education**

A term referring to perspectives on children’s development that emphasize the importance of cultural influences is A) cultural constructivism. B) ethnoconstructivism. C) social constructivism. D) anthropological constructivism. I believe the answer is C, but wanted a second ...

*Monday, April 22, 2013 by Anonymous*

**Chemistry 110, college**

A solution is prepared by dissolving 56.5g of ethylene glycol in 874 g of water. Calculate the change in the boiling point and the freezing point.

*Monday, April 22, 2013 by Holly*

**english**

(1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventh-grade science, I have some experience with the faces and attitudes of ...

*Monday, April 22, 2013 by nena*

**college physics**

how long would it take a 4.50kW MOTOR TO RAISE A 175KG BOILER TO A PLATFORM 15.0M ABOVE THE FLOOR?

*Monday, April 22, 2013 by sean*

**college physics**

How many seconds would it take a 7.00hp motor to raise a 475 lb boiler to a platform 38.0 ft high?

*Monday, April 22, 2013 by sean*

**college**

a guy wire 27 feet long runs from the top of the pole to a spot on the ground. I f the height of the pole is 6 feet longer than the from the base of the pole to the spot where the guy wire is anchored, how tall is the pole?

*Sunday, April 21, 2013 by Anonymous*

**College Physics**

A uniform ladder of mass, m, and length, l, leans at an angle, theta, against a frictionless wall. Determine a formula for the minimum angle at which the ladder will not slip.

*Saturday, April 20, 2013 by Andrew*

**College Physics**

A large 61.0 kg board is propped at a 45 degree angle against the edge of a barn door 2.9m wide. How great a horizontal force must a person behind the door exert (at the edge) in order to open it? Assume that there is negligible friction between the door and the board but that...

*Saturday, April 20, 2013 by Andrew*

**College Physics**

A cubic crate of side s=2.0m is top-heavy: its CG is 18cm above its true center. Part A) How steep an incline can the crate rest on without tipping over? Part B) What would your answer be if the crate were to slide at constant speed down the plane without tipping over? (The ...

*Saturday, April 20, 2013 by Andrew*

**PLEASE HELP! college algebra**

Given the following piecewise function f(x)= {-x+1 for x < 0 {-1 for 0 ≤ x ≤ 3 {-2x for x > 3 a) Find the domain b) Find the range c) Find the intercepts d) Is f continuous on its domain? If not, state where f is discontinuous. e) Graph the function

*Friday, April 19, 2013 by Anonymous*

**college algebra**

1.write the formula for the function that has degree 3 and zeros of -1,2 and 5 with a lead coefficient of 1? (leave answer in factored form) f(x)= 2. Write the formula for the function that has degree of 4 and zeros of -4, 3(multiplicity 2) and 4 with a lead coefficient of -1...

*Friday, April 19, 2013 by cherish*

**Chemistry College**

If KHP sample 1 requires 22.47 mL of aqueous NaOH, how many milliliters of NaOH should be needed for samples 2 and 3?

*Thursday, April 18, 2013 by Belinda*

**College Chemistry**

When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius. -How many moles of dry air were in the bubble? (assume 1 atm) -If the bubble volume is 8.6mL at 75 degrees celsius, what is the partial pressure of the dry air at this temp?

*Thursday, April 18, 2013 by Abbey*

**College Chemistry**

When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius. -How many moles of dry air were in the bubble? (assume 1 atm) -If the bubble volume is 8.6mL at 75 degrees celsius, what is the partial pressure of the dry air at this temp?

*Thursday, April 18, 2013 by Abbey*

**College Chemistry**

When determining the vapor pressure of water, the bubble volume is 1.2mL at 5 degrees celsius. -How many moles of dry air were in the bubble? (assume 1 atm) -If the bubble volume is 8.6mL at 75 degrees celsius, what is the partial pressure of the dry air at this temp?

*Thursday, April 18, 2013 by Abbey*

**Statistics**

A high school counselor is interested in the percentage of students who will be going to college. She randomly picks 60 students and finds that 53 will be going to college. Use a 95% confidence level to find the population proportion. a) State the 95% confidence interval for ...

*Wednesday, April 17, 2013 by Jamie*

**statistics**

A researcher wants to compare the variances of the heights (in inches) of 4 year college basketball players with those of players in junior colleges. A sample of 30 players from each type of school is selected, and the variances of the heights for each type are: 4 year ...

*Wednesday, April 17, 2013 by vanitha*

**college algebra**

I need to expand the expression without exponents. We haven't covered this yet so I am confused on how to do both of them Log x4y7/4 4 log x^8/√yz^5 4 Thanks, for your help.

*Wednesday, April 17, 2013 by Deb*

**college algebra**

for the function g(x)=5x^6-3x^3+x^2-x, list the possible rational zeros of g(x) and then use synthetic division to factor g(x) completely. ***i'm confused, doesn't this problem need a constant?****

*Wednesday, April 17, 2013 by niki (help me!)*

**Grammar**

Write "Incorrect" if "good" or "well" is used incorrectly. Write "Correct" if "good" or "well" is used correctly. 1). I'll do good in college. 2). Being conscientious will help me succeed good in life. 3). I'll be a good influence on others too. 4). I have already been able to...

*Wednesday, April 17, 2013 by Anonymous*

**college algebra**

Write expression as one logarithm and simplify if appropriate. log 3√x + log x^4 - log x^3 4 log (x+3) - 5 log (x^2+4) + 1/3 log y I have these who problems but I don't know where to start. HELP Please.

*Wednesday, April 17, 2013 by Deb*

**College Algebra**

Theres this chemistry problem im getting stuck in because i'm confusing myself with the math. Equation given = %O2 saturation = 100 x (pO2/(pO2 + K) %O2 = 35 K = 1.51 how do I calculate pO2?? I can't seem to cancel them out correctly. Answer = 0.813

*Tuesday, April 16, 2013 by James*

**College math**

A team played 24 games and won 2/3 of them. How many games did they win?

*Tuesday, April 16, 2013 by Marjorie*

**english**

With in sentence should town also be capitalized? The town of Blair, Nebraska, is home to Dana College.

*Tuesday, April 16, 2013 by John*

**Math**

From a survey of 100 college students, a marketing research company found that 60 students owned iPods, 50 owned cars, and 20 owned both cars and iPods. (a) How many students owned either a car or an iPod (but not both)? 1 students (b) How many students do not own either a car...

*Sunday, April 14, 2013 by Denise*

**statistics**

An economist wants to estimate the mean income for the first year of work for college graduates who majored in biology. How many such incomes must be found if the economist wants to be 95% confident that the sample mean is within $500 of the true population mean? Assume that ...

*Sunday, April 14, 2013 by Panther*

**college english**

my professor want's us to write an abstract proposal on our reserch topic " Is our food safe to eat?" BUT we did not write our papers yet,so can someone help me how to set it up

*Sunday, April 14, 2013 by aleksandra*

**college math**

4. Do the indicated operations. A) 3 B) –13 C) 5 D) –11

*Sunday, April 14, 2013 by rolitha*

**algebra**

nico is saving his money for college he invests some money at 8% and $1300 less than that amount of 5% the investments produced the amount of $195 interest in 1 year how much did he invest at each rate?

*Sunday, April 14, 2013 by rebecka*

**sciology college course**

A science teacher tells her class that their final project requires the student to measure a specific variable and determine the velocity of a car with no more 2.5% error. Jennifer and johnny work hard and decide the velocity of the car is 34.87 m/s. The teacher in forms them ...

*Sunday, April 14, 2013 by sucker 1*

**sciology college course**

1. A dad holds five coins in his hand. He tells his son that if he can guess the amount of money he is holding within 5% percentage error he can have the money. The son guesses that he is holding 81 cents. The dad opens his hand and displays 90 cents. Did the son guess close ...

*Sunday, April 14, 2013 by sucker 1*

**college math**

5u+2v=-15 3u+v=-8 Im not sure how to do this problem

*Sunday, April 14, 2013 by carrie*

**college math**

the perimeter of a rectangular traffic sign is 120 inches Also, its length is 6 inches longer than its width

*Saturday, April 13, 2013 by carrie*

**ECONOMICS**

College students sometimes work as summer interns for private firms or for the government. Many of these positions pay very little or nothing. What is the opportunity cost of taking such a job? Explain why students might be willing to take such jobs. If you were to compare the...

*Saturday, April 13, 2013 by RAJA*

**college algebar**

logb x= logb(x+2)-logb8

*Saturday, April 13, 2013 by brenda*