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April 18, 2014

Homework Help: College

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health
You may have to search and research, but once you learn some good sources and methods, you should have success. In addition to searching on the Internet, you also need to make best friends with the reference librarian(s) in your local or college library. Libraries these days ...
Tuesday, January 7, 2014 at 8:09am

College Mathematics
No. 8.5x +8 = 1.3x + 15 7.2x = 7
Sunday, January 5, 2014 at 5:45pm

College Mathematics
Solve: 8.5x +8 = 1.3x + 15 A. x = 50.4 B. x = 0.7 C. x = 3.2 D. x = 1.0 Is B the correct answer
Sunday, January 5, 2014 at 5:32pm

College Mathematics
You're welcome.
Sunday, January 5, 2014 at 5:26pm

College Mathematics
Thanks
Sunday, January 5, 2014 at 5:20pm

College Mathematics
1 kg = 0.0011 tons
Sunday, January 5, 2014 at 4:55pm

College Mathematics
The mass of a large stone block was determined to be 3361 kg. What is the weight of this stone in tons? A. 3.7 B. 1680.5 C. 1512.45 D. 3361
Sunday, January 5, 2014 at 4:49pm

Vietnam war HELP
The US was fighting the wrong war: The US supported a very corrupt SVientnam government, and the citizens wanted a change. It was a civil war, not of US economic importance (except for FIreston Rubber , a plantation owner). Secondly, the US was loosing many, many soldiers in ...
Sunday, January 5, 2014 at 1:18pm

college algebra
We can't do it on these posts.
Sunday, January 5, 2014 at 1:11pm

college algebra
I dont know how to post the figure
Saturday, January 4, 2014 at 5:41pm

college algebra (?)
We cannot see the figures on these posts.
Friday, January 3, 2014 at 11:22am

college algebra
find two algebraic expressions for the area of each figure. first ,regard the figure as one large rectangle, and then regard the figure as a sum of four smaller rectangles x,10,8x
Thursday, January 2, 2014 at 10:12pm

math litracy,history,geography,business studies
You're not alone; most students don't know what career they want to follow when they start college. Take a general course, if you can. Take basic courses as well as courses that interest you.
Thursday, January 2, 2014 at 5:23pm

college algebra
98x/20y-34x/14y=0
Thursday, January 2, 2014 at 9:31am

college algebra
84x/6+24x/8=0
Thursday, January 2, 2014 at 9:27am

Writing
I just want an opinion here. I've been writing for about ten years, and I've improved greatly. Though, now I'm beginning to feel like I've reached a standstill. I still read a lot to expand my knowledge and vocabulary, and I bounce back and forth between ...
Tuesday, December 24, 2013 at 9:10pm

Please help quickly! Social Studies
Please check my answers What was the constitutional issue decided in McCulloch v. Maryland? (Points : 1) Whether the federal government could raise revenue for internal improvements The extent to which states and the federal government shared jurisdiction over commerce <-- ...
Sunday, December 22, 2013 at 9:08pm

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 ...
Saturday, December 21, 2013 at 10:26pm

SP180-Assignment 6_06 and7_07
ASSIGNMENT 06 SP180 Principles of Public Speaking Directions: Be sure to make an electronic copy of your answer before submitting it to Ashworth College for grading. Unless otherwise stated, answer in complete sentences, and be sure to use correct English spelling and grammar...
Friday, December 20, 2013 at 2:23pm

SP180-Assignment 6_06 and7_07
ASSIGNMENT 06 SP180 Principles of Public Speaking Directions: Be sure to make an electronic copy of your answer before submitting it to Ashworth College for grading. Unless otherwise stated, answer in complete sentences, and be sure to use correct English spelling and grammar...
Friday, December 20, 2013 at 6:56am

College Physics
Solving for t, 14.1=20.78t-.5(15)t^2 subtract using a -15m/s^2 (downward acceleration due to gravity)
Wednesday, December 18, 2013 at 5:41am

college algebra
multiply 2nd by 8 8x - 288y = -2640 subtract that from the first 297y = 2673 y = 9 sub into 1st 8x + 81 = 33 8x = -48 x = -6
Tuesday, December 17, 2013 at 10:43pm

college algebra
8x+9y=33 x-36y=-330 elimination
Tuesday, December 17, 2013 at 10:37pm

College geometry
x-intercept (15,0)
Tuesday, December 17, 2013 at 1:27am

College geometry
Find the coordinates of the x-intercept. -x + 5y = -15 (Points : 1)
Tuesday, December 17, 2013 at 1:13am

college Algebra
visit http://www.gregthatcher.com/Mathematics/​GaussJordan.aspx and enter your matrix. It will show you all the steps involved.
Sunday, December 15, 2013 at 5:59pm

college Algebra
Write the system as a matrix and solve it by Gauss-Jordan elimination. (If the system is inconsistent, enter INCONSISTENT. If the system has infinitely many solutions, show a general solution in terms of x, y, or z.) x + 2y − z = 5 2x − y + z = 2 3x − 4y + 3z...
Sunday, December 15, 2013 at 4:15pm

business
You may have to search and research, but once you learn some good sources and methods, you should have success. In addition to searching on the Internet, you also need to make best friends with the reference librarian(s) in your local or college library. Libraries these days ...
Sunday, December 15, 2013 at 3:07pm

college Algebra
3 d + 5 a + 1 t = 105 6 d + 0 a + 2 t = 105 2 d + 4 a + 3 t = 105 that zero in the middle will help coef matrix | 3 5 1 | | 6 0 2 | = 20+24-24-90 = -70 det | 2 4 3 | | 105 5 1 | | 105 0 2 | is the same as | 105 4 3 | | 1 5 1 | | 1 0 2 |times 105 = 105(10+4-8-15)=-945 | 1 4 3...
Friday, December 13, 2013 at 8:46pm

college Algebra
Use matrix methods to solve the problem. To use space effectively, librarians like to fill shelves completely. One 105-inch shelf can hold 3 dictionaries, 5 atlases, and 1 thesaurus; or 6 dictionaries and 2 thesauruses; or 2 dictionaries, 4 atlases, and 3 thesauruses. How wide...
Friday, December 13, 2013 at 7:57pm

college Algebra
thank you
Friday, December 13, 2013 at 7:56pm

college Algebra
ah ha, you did not say you know linear algebra before. In the earlier problem the determinant of your coefficient matrix was zero, no solutions. a + u = 120,000 a - 3 u = 0 | 1 +1 | 120,000 | 1 -3 | 0 det coef matrix = -3 - 1 = -4 put right column in for a column to solve for ...
Friday, December 13, 2013 at 7:51pm

college Algebra
i have no clue why its not working... i tried: 0,0,0 9,9,9 INCONSISTENT
Friday, December 13, 2013 at 7:50pm

college Algebra
Use matrix methods to solve the problem. 120,000 gallons of fuel are to be divided between two airlines. Triple A Airways requires three times as much as Unity Air. How much fuel should be allocated to Triple A? ______ gal
Friday, December 13, 2013 at 7:42pm

college Algebra
Well, if you are given choices say inconsistent. I used logic and not linear algebra to say 9,9,9
Friday, December 13, 2013 at 7:37pm

college Algebra
By the way, the system is indeterminant. The determinant of the coefficient matrix is zero.
Friday, December 13, 2013 at 7:35pm

college Algebra
its saying its wrong? :/
Friday, December 13, 2013 at 7:34pm

college Algebra
yes, x - z = 0 also x - y = 0 in fact x y and z are all 9
Friday, December 13, 2013 at 7:24pm

college Algebra
9+9 = 18 9+9 = 18 9-9 = 0 That worked However it is trivial
Friday, December 13, 2013 at 7:23pm

college Algebra
i think you used the wrong one for the third line... x+z=18 y+z=18 x-z=0
Friday, December 13, 2013 at 7:21pm

college Algebra
the answer didnt work...
Friday, December 13, 2013 at 7:18pm

college Algebra
The last equation means y = z so use it x + z = 18 y + z = 18 ------------- x - y = 0 so x = y so x = y = z = 9
Friday, December 13, 2013 at 7:12pm

college Algebra
none of those lines is parallel, so I should be able to find a solution. first work on the first two by elimination x + y + z = 7 2x + y + z = 14 ---------------- subtract - x + 0 + 0 = -7 so x = 7 well that gives us a running start 7 + y + z = 7 14 + y + z = 14 both yield y...
Friday, December 13, 2013 at 7:06pm

college Algebra
Solve the system, if possible. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter a general solution in terms of x, y, or z.) x + y = 18 y + z = 18 x − z = 0
Friday, December 13, 2013 at 7:06pm

college Algebra
Solve the system, if possible. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter a general solution in terms of x, y, or z.) x + y + z = 7 2x + y + z = 14 x + 2y + 3z = 2
Friday, December 13, 2013 at 6:54pm

algebra
At one time, the ratio of in-state to out-of-state tuition at Texas A&M University in college station, TX was about 3:11. About how much was the out-of-state tuition if the in-state tuition at the time was about $2400?
Friday, December 13, 2013 at 1:47pm

math
A college student is looking at her monthly checking account records. On September 1, 2008, her checking account held a balance of $1,050. At the end of March 2009, her checking account held a balance of $800. What is the monthly rate of change for the student’s checking ...
Friday, December 13, 2013 at 8:37am

College Algebra
thank you, big help
Thursday, December 12, 2013 at 7:38pm

College Algebra
2 L + 2 W = 2200 so L + W = 1100 W = L - 300 L + (L-300) = 1100 2L - 300 = 1100 2 L = 1400 L = 700 then W = 400 and A = L * W = 280,000 cm^2
Thursday, December 12, 2013 at 7:28pm

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
4^-1.5
Thursday, December 12, 2013 at 8:32am

College Algebra
Minding my p's and q's, I would say: if p = 3q in p = q+4 3q = q+4 2q = 4 q = 2 then p = 6
Wednesday, December 11, 2013 at 11:19pm

College Algebra
break-even is where revenue = costs, so 3q = q+4 q=2
Wednesday, December 11, 2013 at 11:17pm

College Algebra
look at the top two "related Questions" below
Wednesday, December 11, 2013 at 11:05pm

College
The university at Baltimore is primarily a graduate school in the health sciences. I believe the undergrad pre med program is at College Park. http://en.wikipedia.org/wiki/University_​of_Maryland,_College_Park http://en.wikipedia.org/wiki/University_​of_Maryland,...
Wednesday, December 11, 2013 at 10:51pm

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
Correct. 20 cents =0.2 $ 50 cents =0.5 $ 0.2 x + 0.5 y = 2 Subtract 0.2 to both sides 0.2 x + 0.5 y - 0.2 x = 2 - 0.2 x 0. 5 y = 2 - 0.2 x multiply both sides by 2 y = 4 - 0.4 x y = - 0.4 x + 4
Wednesday, December 11, 2013 at 10:13pm

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
prob(2 i's, no replacement) = (2/11)(1/10) = 1/55
Wednesday, December 11, 2013 at 6:47pm

College Algebra
there are 11 letters, and only 2 b's, so P(b) = 2/11
Wednesday, December 11, 2013 at 6:46pm

College Algebra
I counted 11 letters in the given word, of which two of them were b's so Prob(b) = 2/11
Wednesday, December 11, 2013 at 6:46pm

College Algebra
slope is the rate of draining y-intercept is the amount at full barrel x-intercept is how long it takes to become empty
Wednesday, December 11, 2013 at 6:45pm

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
They didn't line up correctly. I reposted the correct way.
Wednesday, December 11, 2013 at 6:14pm

College Algebra
I is always all zeros except the main diagonal. So, here I = 1 0 0 1
Wednesday, December 11, 2013 at 5:18pm

College Algebra
Erm....? *I found them!* They're in the 3rd row before the = signs. Seriously though, I don't get what you're asking...
Wednesday, December 11, 2013 at 5:11pm

College Algebra
slope = y2 - y1 / (x2-x1) = 7/5 perpendicular = -1/m so we have -5/7
Wednesday, December 11, 2013 at 5:10pm

College Algebra
C * x = C x = C/C C/C = 1 x = 1
Wednesday, December 11, 2013 at 5:09pm

College Algebra
you can do matrix stuff at wolframalpha.com, as in this case, AC= {{2,3,0},{4,1,6}}*{{2,3},{0,1},{1,0}} = {{4,9},{14,13}} Just for grins, showing that matrix multiplication is not commutative, CA={{16,9,18},{4,1,6},{2,3,0}}
Wednesday, December 11, 2013 at 5:08pm

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

Chemistry
DrBob222's answer is wrong. You mean to put Cd/Cd^2+ is -0.403, not 0.403. Answer is: 3Cd^2+(aq) + 2In(s) --> 3Cd(s) + 2In^3+(aq) this is right because the short hand notation is: In(s)|In^3+ (aq)||Cd^2+ (aq)|Cd(s) And the Anode is always on the left. ~Information valid...
Wednesday, December 11, 2013 at 1:06pm

college intermediate algebra
1st person: X min. 2nd person: (X+20) min. X*(X+20)/(X+X+20) = 24 min. (X^2+20X)/(2X+20) = 24 X^2+20X = 48X+480 X^2-28X-480 = 0 Use Quadratic formula and get: X = 40 min. X+20 = 60 min.
Tuesday, December 10, 2013 at 8:35pm

college intermediate algebra
1/24 = 1/x + 1/(x+20) x = 40
Tuesday, December 10, 2013 at 8:21pm

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
the minor axis is still 5.5 The major axis is 5.5/cos(arctan .25) check my thinking.
Tuesday, December 10, 2013 at 6:38pm

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
Surely you don't mean aqueous for (SO3) and (O2).
Tuesday, December 10, 2013 at 1:53pm

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)
...I don't know thats exactly why I was asking actually. cool. thanks.
Tuesday, December 10, 2013 at 12:43am

Intermediate Algebra (College)
no, you have to multiply every term by x^2. This method skips the 5/x term. Then your second line skips the 14 term when multiplying by x. What kind of algebra is that?
Tuesday, December 10, 2013 at 12:28am

Intermediate Algebra (College)
That's exactly what I was thinking, then I was also thinking, wouldn't this work? 14 - 5/x = x^2 14 - 5 = x^3 9 = x^3 ???
Tuesday, December 10, 2013 at 12:11am

Intermediate Algebra (College)
assuming x≠0, multiply by x^2 to get 14 - 5x = x^2 x^2+5x-14 = 0 (x+7)(x-2) = 0 I think you can take it from there, no?
Tuesday, December 10, 2013 at 12:09am

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
any rational zeros have numerators which divide 13 and denominators which divide 169. That means ±(1,13)/±(1,13,169) or, ±1 ±13 ±1/13 ±1/169 A little synthetic division shows that there are no rational roots.
Monday, December 9, 2013 at 12:15pm

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 stats
Post a null hypothesis that would use a t test statistical analysis
Sunday, December 8, 2013 at 9:46am

college algebra
solve the system 2x+y=-4 -x+y= 2 2x + y = -4 -2x + 2y = 4 3y = 0 y =0 x = -2 (-2,0)
Saturday, December 7, 2013 at 9:38pm

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

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