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March 1, 2015

March 1, 2015

Post a New Question | Current Questions

**College Algebra**

Use a system of equations to solve the problem. A rectangular picture frame has a perimeter of 2,200 centimeters and a width that is 300 centimeters less than its length. Find the area of the picture. _____ cm2
*Thursday, December 12, 2013 at 6:55pm*

**college chemistry**

If 100.0 mL of 0.0025 M Na2SO4 (aq)is saturated with CaSO4 how many grams of CaSO4 would be present in the solution? [Hint: Does the usual simplifying assumption hold?]
*Thursday, December 12, 2013 at 5:38pm*

**Business English**

I need help writing this: You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe one ...
*Thursday, December 12, 2013 at 2:42pm*

**MATH**

The cost of tuition at Johnson Community College is $190 per credit hour. Each student also has to pay $60 in fees. Write a linear equation model for this situation. Use C for the cost and x for the number of credit hours.
*Thursday, December 12, 2013 at 10:31am*

**College Algebra**

The equation for the total revenue earned by a company for selling widgets is p=3q. The equation for the total cost of the company for producing widgets is p=q+4. Identify the break-even quantity.
*Wednesday, December 11, 2013 at 10:39pm*

**College Algebra**

Pencils cost 20 cents and pens cost 50 cents. Mabel buys x pencils and y pens, spending $2.00. what is the slope and what does it represent? what is the y-intercept and what does it represent?
*Wednesday, December 11, 2013 at 10:29pm*

**College**

What id the difference between University of maryland college park and University of Maryland Baltimore? I know they are at different locations but which one has what? I looked online but got so many different answers that i got confused.
*Wednesday, December 11, 2013 at 10:21pm*

**College Algebra**

Pencils cost 20 cents and pens cost 50 cents. Mabel buys x pencils and y pens, spending $2.00. Write an equation in slope-intercept form that expresses y in terms of x. slope= -2/5 what does it represent? y-intercept= 4 what does it represent?
*Wednesday, December 11, 2013 at 9:55pm*

**College Algebra**

50 gallon barrel plumb full of water springs a leak in the bottom and leaks at a constant rate of two gallons per minute. y=50-2x slope=-2 what does it represent? y-intercept=50 what does it represent? x-intercept=25 what does it represent?
*Wednesday, December 11, 2013 at 6:30pm*

**College Algebra**

The letters in the word probability are written on separate slips of paper. Find the probability of drawing two i's in a row without replacement.
*Wednesday, December 11, 2013 at 6:18pm*

**College Algebra**

The letters in the word probability are written on separate slips of paper. One slip of paper is drawn at random. Find P(b)
*Wednesday, December 11, 2013 at 6:16pm*

**College Algebra**

Find AC A= 2 3 0 4 1 6 C= 2 3 0 1 1 0
*Wednesday, December 11, 2013 at 4:58pm*

**College Algebra **

If CI=C, find I C= 2 3 0 1 1 0
*Wednesday, December 11, 2013 at 4:56pm*

**College Algebra**

Line m passes through (2,5) and (-3,-2). Find the slope of a line that is perpendicular to line m.
*Wednesday, December 11, 2013 at 4:55pm*

**College Algebra**

Find AC A= 2 3 0 C= 2 3 4 1 6 0 1 1 0
*Wednesday, December 11, 2013 at 4:54pm*

**college algebra**

A circular vent pipe with a diameter of 5.5 inches is place on a roof tht has a slope of 1/4. Find an equation of the ellipse that should be cut from the roof so that the pipe will fit. roound parameters to the nearest hundreth.
*Tuesday, December 10, 2013 at 7:51pm*

**College Algebra**

A circular vent pipe with a diameter of 5.5 inches is place on a roof tht has a slope of 1/4. Find an equation of the ellipse that should be cut from the roof so that the pipe will fit. roound parameters to the nearest hundreth.
*Tuesday, December 10, 2013 at 6:34pm*

**college intermediate algebra**

Working together, two people can mow the lawn in 24 minutes. Working alone, one person takes 20 minutes longer than the other. How many minutes would it take each person to mow the lawn alone? Thanks!!!
*Tuesday, December 10, 2013 at 3:35pm*

**College Chemistry**

Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium concentration of SO2(g). 2SO2(g)+O2(g)=2SO3(g) Kc=1.7*10^8 [SO3]aq=0.0034 M [O2]aq=0.0018 M
*Tuesday, December 10, 2013 at 4:19am*

**Intermediate Algebra (College)**

Solve algebraically: 14/x^2 - 5/x = 1 Thank you!!! (:
*Tuesday, December 10, 2013 at 12:03am*

**math**

Yumi's grandparents presented her with a gift of $11,000 when she was 8 years old to be used for her college education. Over the next 9 years, until she turned 17, Yumi's parents had invested her money in a tax-free account that had yielded interest at the rate of 5.5...
*Monday, December 9, 2013 at 7:03pm*

**College Algebra 105**

use the rational zero's theorem to list the potential zero's of the polynomial function. Do not attempt to find the zero's f(x)=-169x^7-x^6+x+13 and then the second part is find the potential rational zero's.
*Monday, December 9, 2013 at 11:45am*

**college algebra**

solve the system 2x+y=-4 -x+y= 2
*Saturday, December 7, 2013 at 8:23pm*

**economic**

College enrollments increased at the same time that average tuition rose dramatically. Does this contradict the law of downward-sloping demand? Explain. (b) Use supply and demand model to explain the dramatic rise in the price of a college education
*Friday, December 6, 2013 at 8:39pm*

**college stats**

Suppose population proportion1 = 0.4, sample size1 = 100, population proportion2 = 0.5, sample size2 = 120. whats the formula? i think this is just a plug and chug
*Thursday, December 5, 2013 at 8:16pm*

**college stats**

in a sample of 159,949 first year college students, the national survey of student engagement reported that 39% participated in community service or volunteer work.find the margin of error for 99% confidence. what formula do I use? I know the 99% interval for z is 2.576 n is ...
*Thursday, December 5, 2013 at 7:49pm*

**stats**

in a sample of 159,949 first year college students, the national survey of student engagement reported that 39% participated in community service or volunteer work.find the margin of error for 99% confidence. ...idk what formula to use.
*Thursday, December 5, 2013 at 7:41pm*

**chemistry college**

Consider the titration of 30.0 mL sample of 0.050 M NH3 with 0.025 M HCl. Calculate the pH after the following volumes of titrant (acid)have been added: a)0 mL, b)20.0mL, c)60.0mL, d)65mL Kb for NH3 is 1.8 x 10^-5
*Wednesday, December 4, 2013 at 5:33pm*

**College Algebra**

1. 2log8^x=log8(4x+12) both log bases are 8. I have no clue what to do. 2. 1/2ln (x) -3 ln y - ln (z-2) so far for this second one i have ln sqrt(x)-ln y^3 - ln (z-2) dont know what to do next
*Wednesday, December 4, 2013 at 1:17pm*

**English**

Q: To be a doctor at a hospital, do they all need to get doctors's degree in college?
*Tuesday, December 3, 2013 at 4:22pm*

**College algebra**

Solve the system Y=3x-2 6x-2y=30
*Tuesday, December 3, 2013 at 3:29pm*

**College algebra**

Solve the system X=2y+3 3x+4y=59
*Tuesday, December 3, 2013 at 3:28pm*

**English**

Hello, Dr. Green. ------------------ In this expression, is Dr. Green a doctor who works at a hospital? Or is Dr. Green a professor in college?
*Tuesday, December 3, 2013 at 2:37pm*

**College Algebra**

A= [2 3 0] [4 1 6] 1. what is the additive inverse of A? 2. find 3A.
*Tuesday, December 3, 2013 at 12:46pm*

**College Algebra**

Line m passes through (2,5) and (-3,-2) Find the slope of a line that is perpendicular to line m.
*Tuesday, December 3, 2013 at 12:44pm*

**College Algebra**

Find the probability of drawing two i's in a row without replacement.
*Tuesday, December 3, 2013 at 12:42pm*

**math**

At a certain college, there are 7 men for every 5 women. If there are 440 more men than women, what is the total enrollment?
*Sunday, December 1, 2013 at 9:17pm*

**college calculus**

I don't know how to solve this indefinite integral with both limits as variables: ^x^3 ç (z^4+1)dz ⌄ln(x) If you could explain I'd appreciate it.
*Saturday, November 30, 2013 at 10:36pm*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*Saturday, November 30, 2013 at 8:06pm*

**College Physics **

At what frequency does the inductive reactance of a 42.0 µH inductor equal the capacitive reactance of a 42.0 µF capacitor? kHz
*Saturday, November 30, 2013 at 6:41pm*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*Saturday, November 30, 2013 at 1:50am*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*Friday, November 29, 2013 at 7:30pm*

**College alerbra**

solve the exponential equation. 4^(x+2)=9x
*Friday, November 29, 2013 at 2:51pm*

**College**

7x+6=x-30
*Friday, November 29, 2013 at 12:21am*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*Thursday, November 28, 2013 at 5:13pm*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*Wednesday, November 27, 2013 at 11:34pm*

**antelope college**

Oscar has 4 gallons 1 quart of milk. he wants to place all of the milk into quart bobbles. how many quarts does he have?
*Monday, November 25, 2013 at 11:16pm*

**College Algebra**

Find a Quadratic polynomial function with real coefficients satisfying the given conditions. -4 and 3 are zeros; f(1) = -30 HELP. I have no idea.
*Monday, November 25, 2013 at 8:22pm*

**statistics**

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 ...
*Monday, November 25, 2013 at 3:36pm*

**College Algebra**

solve the polynomial inequality and graph on number line. express in set interval rotation. Show work x^3 - 3x^2 - 9x + 27 < 0
*Sunday, November 24, 2013 at 6:55pm*

**statistics**

Typing speeds among college students are normally distributed with a mean of 60 words, and a standard deviation of 10 words. determine the typing speed that separates the top 6% typists from the rest.
*Sunday, November 24, 2013 at 3:55pm*

**college problem solving 3**

an express train leaves new york at 3:00 pm and rreaches boston at 6:00 pm a slow train leaves boston at 1:30pm and arrives in new york at 6:00 pm. if both trains travel at constant speeds at what time do they meet
*Sunday, November 24, 2013 at 2:09pm*

**college problem solving 2**

Me and Bill said casey can do the job for you in 10 days but give me alex instead of bill and we can get it done in 9 days. i can do better tha that said slex. let me take bill as a partner and we will do the job for you in 8 days. how long will it take each man to do the job ...
*Sunday, November 24, 2013 at 2:07pm*

**college problem solving**

a certain two-digit number is 6 less than the sum of its tens digit and 7 times its units digit. if the digits are reversed the number is increase by 27. fin the original two-digit numbers
*Sunday, November 24, 2013 at 2:02pm*

**College alerbra**

Scott invested a total of $9500 at two separate banks. One bank pays simple interest of 11% per year while the other pays simple interest at a rate of 9% per year. If Scott earned $973.00 in interest during a single year, how much did he deposit in each bank?
*Saturday, November 23, 2013 at 5:11pm*

**TCCD**

Thirty five percent of adult americans are regular voters. A random sample of 250 adults in a medium size college town were surveyed, and it was...Estimate the true proportion of regular voters with 90% confidence and comment on the results.
*Friday, November 22, 2013 at 1:27am*

**statistics**

Is there a significant difference between first year post college incomes of graduates from public versus private institutions? Provide the IV, DV, and best method of analysi
*Thursday, November 21, 2013 at 9:41pm*

**Calculus - Integrals **

The projected rate of increase in enrollment at a new college is estimated by dE/dt = 6,000(t+1)^-3/2 where E(t) is the projected enrollment in t years. If the enrollment is 3,000 now (t=0), find the projected enrollment 15 years from now.
*Thursday, November 21, 2013 at 5:51pm*

**College Algebra**

Identify a different point on the line (with whole number coordinates) and tell what it represents.
*Thursday, November 21, 2013 at 5:33pm*

**College Algebra**

The equation for the total revenue earned by a company for selling widgets is p=4q. The equation for the total cost of the company for producing widgets if p=q+6. Find the break-even quantity.
*Thursday, November 21, 2013 at 5:30pm*

**College Algebra**

The equation for the total revenue earned by a company for selling widgets is p=4q. The equation for the total cost of the company for producing widgets if p=q+6. Graph p=4q
*Thursday, November 21, 2013 at 2:24pm*

**College Algebra**

Mints cost 5 cents each and gumballs cost 3 cents each. Kathleen spent 60 cents buying x mints and y gumballs. Slope intercept form: y=-5/3+20 What is the slope and what does it represent in this problem?
*Thursday, November 21, 2013 at 2:19pm*

**College Algebra**

Mints cost 5 cents each and gumballs cost 3 cents each. Kathleen spent 60 cents buying x mints and y gumballs. Slope intercept form: y=-5/3+20 What is the y-intercept and what does it represent in this problem?
*Thursday, November 21, 2013 at 11:33am*

**College Algebra**

Pencils cost 20 cents and pens cost 50 cents. Mabel buys x pencils and y pens, spending $2.00. Write an equation in standard form with integer coefficients that relates x and y.
*Wednesday, November 20, 2013 at 10:46pm*

**College Algebra**

Write an equation for the amount of money, A, that we would have if we invested $25,000 at 6% per year for 5 years compounded instantaneously.
*Wednesday, November 20, 2013 at 9:30pm*

**College Algebra**

Write an equation for the amount of money, A, that we would have if we invested $2000 at 8% interest for 10 years compounded semiannually (twice each year)
*Wednesday, November 20, 2013 at 9:29pm*

**houston community college**

gordon rosel went to his bank to find out how long it will take for 1,200 to amount to 1,650 at 8% simple interest. round to the nearest tenth
*Wednesday, November 20, 2013 at 9:13pm*

**College Algebra**

Solve the System 2x-8y=20 3x-12y=30
*Wednesday, November 20, 2013 at 9:13pm*

**College Algebra**

A 50 gallon barrel plumb full of water springs a leak in the bottom and leaks at a constant rate of two gallons per minute. Write an equation that relates the amount of water left in the barrel, y in terms of how many minutes have passed since the leak began, x.
*Wednesday, November 20, 2013 at 9:03pm*

**College Algebra**

A company that bought a machine for $30,000 wants to depreciate its entire value equally over the next ten years. Write an equation that represents the machine's value, v, in terms of the number of years that have passed since the machines purchase, t.
*Wednesday, November 20, 2013 at 8:38pm*

**College Algebra**

Change the equation 5x+3y=60 to slope-intercept form.
*Wednesday, November 20, 2013 at 8:25pm*

**College Algebra**

Mints cost 5 cents each and gumballs cost 3 cents each. Kathleen spent 60 cents buying x mints and y gumballs. Write an equation in stand form that represents all the different combinations of mints and gumballs that Kathleen might have purchased.
*Wednesday, November 20, 2013 at 8:18pm*

**literature (bejamin Franklin)**

As a poor boy, Franklin realized that he could not buy many books, but he came up with an idea that could give people access to as many books as they wanted. This idea was essentially.. a) get a government grant b)get the government to buy the books c)have all your friends ...
*Tuesday, November 19, 2013 at 6:07pm*

**maths**

A community college has 2,000 students and 50 instructors. Next year the enrollment will be 6,000. How many new instructors should be hired if the college wants to keep the same student to instructor ratio?
*Tuesday, November 19, 2013 at 5:17pm*

**college algebra**

A partial solution set is given for the polynomial equation. Find the complete solution set. (Enter your answers as a comma-separated list.) x^3 + 3x^2 − 14x − 20 = 0; {−5}
*Monday, November 18, 2013 at 8:36pm*

**college algebra**

Use long division to perform the division. (Express your answer as quotient + remainder/divisor.) (x^4 + 7x^3 − 2x^2 + x − 1) / (x − 1)
*Monday, November 18, 2013 at 8:10pm*

**college algebra**

Solve the exponential equation using logarithms. Give the answer in decimal form, rounding to four decimal places. (Enter your answers as a comma-separated list.) 4^(x − 3) = 3^(2x) x = _____
*Monday, November 18, 2013 at 7:41pm*

**college algebra**

Use a calculator to help solve the problem. An isotope of lead, 201Pb, has a half-life of 8.4 hours. How many hours ago was there 40% more of the substance? (Round your answer to one decimal place.) ____hr
*Monday, November 18, 2013 at 7:38pm*

**English**

Which words go in the following sentences. Young Charles was born in 1902 and was growing/grew up on a farm. Later, although he has studied/had studied engineering in college, he was more interested in flying planes.
*Monday, November 18, 2013 at 4:39pm*

**Business 101**

1. Carmen Santiago works for a number of businesses as a “consultant.” She has helped design accounting systems, provided accounting services, and analyzed the financial strength of her clients’ businesses. Carmen is working as a A. public accountant. B. ...
*Sunday, November 17, 2013 at 6:59pm*

**college algebra**

An isotope of lead, 201Pb, has a half-life of 8.4 hours. How many hours ago was there 40% more of the substance? (Round your answer to one decimal place.) ____hr
*Sunday, November 17, 2013 at 4:10pm*

**college algebra**

Solve the exponential equation using logarithms. Give the answer in decimal form, rounding to four decimal places. (Enter your answers as a comma-separated list.) 4x − 3 = 32x x = _____
*Sunday, November 17, 2013 at 3:15pm*

**college algebra**

In 4 years, 30% of a radioactive element decays. Find its half-life. (Round your answer to one decimal place.) _____ yr
*Sunday, November 17, 2013 at 3:10pm*

**College and Social studies Courses**

Is Economic 201 or 202 equivalent to AP Microeconomic or AP Macroeconomic?
*Friday, November 15, 2013 at 6:58pm*

**College and Math Courses**

Is statistic 243 equivalent to AP Statistic?
*Friday, November 15, 2013 at 6:56pm*

**college essay conclusion edit**

can someone edit this. also, does it sound too melodramatic? And so, dear reader, I am no longer a child. I was unable to maintain my simplest and purest form, as the fragile innocence of my childhood has been taken. I am like an old book, torn and weathered from time, ...
*Friday, November 15, 2013 at 6:54pm*

**college letter edit**

can someone help edit this? I literally need this in by tonight Dear Admissions, As I was recently speaking with an admissions officer from Uconn, I was exponentially pleased to be informed that the University of Connecticut has allowed for the submition of a writing ...
*Friday, November 15, 2013 at 4:52pm*

**college essay cover letter**

Can someone edit this Dear Admissions, I was pleased to find that the University of Connecticut allowed for applicants to submit a writing supplement along with their applications. So, I have taken this opportunity to show the main experiences that I have experienced the past ...
*Friday, November 15, 2013 at 3:13pm*

**stastics**

Salaries of 31 college graduates who took a course in college have a mean, x of 66,700 a standard deviation , o of 17,120, construct a 90% confidence interval for estimating the population mean u.
*Friday, November 15, 2013 at 11:06am*

**math**

A couple plans to save for their child’s college education. What principal must be deposited by the parents when their child is born in order to have $100,000 when the child reaches age 18? Assume the money earns 4% interest, compounded quarterly.
*Friday, November 15, 2013 at 6:09am*

**Personal Finance**

If the economy is not doing well and jobs are hard to find, what would you suggest for your friend to do if they are graduating high school in a month? A) sit at home until the economy improves B) save money by going to a local community college C) look for a job D) all of the...
*Wednesday, November 13, 2013 at 10:41am*

**College Level Calculus**

Each orange tree grown in California produces 720 oranges per year if not more than 20 trees are planted per acre. For each additional tree planted per acre, the yield per tree decreases by 15 oranges. How many trees per acre should be planted to obtain the greatest number of ...
*Tuesday, November 12, 2013 at 10:31pm*

**math 540**

suppose it takes a college student an average of 5 minutes to find a parking space on the schools parking lot. Assume also that this time is normally distributed with a standard deviation of 2 minutes. What time is exceeded by approximately 75% of the college students when ...
*Tuesday, November 12, 2013 at 9:21pm*

**college physics**

A weightlifter has a basal metabolic rate of 92.4 W. As he is working out, his metabolic rate increases by about 650 W. (a) How many hours does it take him to work off a 450 Calorie bagel if he stays in bed all day? (b) How long does it take him if he's working out? (c) ...
*Tuesday, November 12, 2013 at 8:44pm*

**college**

a point source is on the bottom of a pool 2m deep. find the diameter of the largest circle at the surface which light can emerge from the water (n=1.33)
*Monday, November 11, 2013 at 11:36pm*

**Math**

the ratio of males to females in a college class is 2:6. If there are 72 students in the class, how many are male?
*Monday, November 11, 2013 at 9:19pm*

**College anatomy**

It was observed that blood glucose levels were falling in an individual. This event would be sensed by (a) cells in the (b) of the pancreas, causing them to release the hormone (c). This series of events would be part of an (d) loop/mechanism, serving as a self-adjusting ...
*Monday, November 11, 2013 at 7:33pm*

**Statistics**

An opinion poll asks a random sample of 100 college seniors how they view their job prospects. In all, 53 say "Good." The 95% confidence interval has a margin of error of 9.9%. The sample used actually included 130 college seniors but 30 of the seniors refused to ...
*Monday, November 11, 2013 at 3:51pm*

**Statistics**

To plan the budget for next year a college needs to estimate what impact current economic downturn might have on student requests for financial aid. Historically, this college has provided aid to 35% of its students. Officials look at a random sample of this year’s ...
*Monday, November 11, 2013 at 2:50pm*

**U.S. and Global economics; involving math problems**

I've been working on this problem for "hours" and I can't quite figure out how to solve it; can anyone help plzzz? I would appreciate it. :) Two college students went on spring break to Guadalajara, Mexico. One took the vacation in 2002, while the other went ...
*Monday, November 11, 2013 at 10:03am*

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