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April 16, 2014

Homework Help: College

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College Algebra
Show me the steps in doing this problem 30ax-15ay+42x-21y
Wednesday, January 23, 2013 at 11:23am

College Algebra
that isnt much to go on, but try this: h(t)=-1/2(g)(t^2)+Vt+h (g=32ft/sec^2 or 9.8m/sec^2) V=initial velocity t=time h=initial height im assuming that this question is implying that the girl is standing on the ground, so for "h" no input would be needed. that ...
Tuesday, January 22, 2013 at 9:54pm

college algebra
Order of operation done by hand
Tuesday, January 22, 2013 at 7:27pm

college algebra
13√9+16 |5-7|^2 I got 9.40 but I think I might have done it wrong
Tuesday, January 22, 2013 at 7:05pm

College Chemistry
15 M = 15 mol / L. In 1 L of solution there are 15 mol of H3PO4. molar mass of H3PO4 = 97.995 g / mol. Then 15 mol x 97.995 g / mol = 1,469.9 g of H3PO4 which is the 85% of total mass of solution. Total mass = 1,469.9 g / 0.85 = 1,729 g of solution in 1 L Density solution = 1,...
Tuesday, January 22, 2013 at 6:18pm

college algebra
you are correct as to the center. The radius is √13 (x-h)^2 + (y-k)^2 = r^2 is the circle centered at (h,k) with radius r.
Tuesday, January 22, 2013 at 5:27pm

college algebra
Find the center and radius of the circle (x+3)^2+(y-5)^2=13 I think the center is (-3,5) Radius is (13) but I don't know how to show the work for it.
Tuesday, January 22, 2013 at 5:19pm

ALGEBRA
From a survey of 100 college students, a marketing research company found that 65 students owned iPods, 45 owned cars, and 25 owned both cars and iPods. (a) How many students owned either a car or an iPod (but not both)? students (b) How many students do not own either a car ...
Tuesday, January 22, 2013 at 2:44pm

College Chemistry
In general, we assume that we need only one volume. In this case, however, an extra 0.15 mL couldn't hurt anything. As you point, however, it affects the yield.
Tuesday, January 22, 2013 at 1:12pm

College chemistry
A farmer applies 13.50 kg of a fertilizer that contains 10.0% nitrogen to his fields each year. Fifteen (15.0%) percent of the fertilizer washes into a river that runs through the farm. If the river flows at an average rate of 0.265 cubic feet per second. What is the ...
Tuesday, January 22, 2013 at 12:59pm

College Chemistry
I was also thinking so we can't add the two volume of A together? So like for X in boiling A there is 2mL and in Y there is 0.15ml. So all together solvent A would be 2.15mL. all of Y would still be gone but for X instead of 360mg i would get 357mg
Tuesday, January 22, 2013 at 12:59am

College Chemistry
You add enough boiling A to dissolve all of X (of course it will dissolver all of Y, too). Using 0.15 mL of boiling A will dissolve all of Y and some of X. In fact I suppose you could get pure X this way, too, although it isn't the usual way we think of recrystallization. ...
Tuesday, January 22, 2013 at 12:44am

College Chemistry
I'm guessing that 2mL of boiling A came from (400mg)(1mL/200mg)= 2mL So we don't have worry about the Y at boiling A? which will be 0.15mL if we do the calculation.
Tuesday, January 22, 2013 at 12:17am

College Chemistry
Suppose you take 2 mL of boiling A. X = 2 mL x 200 mg/mL = 400 mg so all of X will dissolve. Y = 2 mL x 200 mg/mL = 400 mg so all of Y will dissolve. Now cool the solution to room temperature. How much X and Y will recrystallize? 2 mL x 20 mg/mL = 40 mg X will stay in solution...
Tuesday, January 22, 2013 at 12:06am

College Chemistry
a mixture contains two crystalline solid X and Y. Decide if pure X can be obtained by a proper recrystallization using solvent A. Include the exact volumes of solvent used and the amount of pure X obtained. GIVEN: Solubility of X in boiling A :200mg/ml solubility of X at room ...
Monday, January 21, 2013 at 11:49pm

College Algebra
How would figure out the slope and intercepts: 1.4x= -14y
Monday, January 21, 2013 at 10:56pm

MATHEMATICS
Suppose you won a contest at 9th grade start that deposited $3,000 in an account that pays 5% annual interest compounded continuously. You go to college for four years (four years later). How much will you have then?
Monday, January 21, 2013 at 10:29pm

College Algebra
x^2 - 5 = (x+√5)(x-√5) check by expanding it
Monday, January 21, 2013 at 8:49pm

College Algebra
"The load L a horizontal beam can safely support varies jointly as the width w and the square of the depth d and inversely as the length l" ---- >Load = k(wd^2/L) given : L = 12, w = 6inches or 1/2 , d = 8 inches or 2/3, load = 600 600 = k(1/2)(4/9) /12 (1/54)k = ...
Monday, January 21, 2013 at 8:47pm

College Algebra
The load L a horizontal beam can safely support varies jointly as the width w and the square of the depth d and inversely as the length l. If a 12-foot beam with width 6 inches and depth 8 inches safely supports 600 pounds, how many pounds can a 14-foot beam that has width 5.5...
Monday, January 21, 2013 at 8:06pm

College Accounting
apr. 12 no entry no entry 0
Monday, January 21, 2013 at 6:40pm

College Algebra
The expression x^2-7 is not factorable using integer values. But the expression can be written in the form X^2-(Square root7)^2 enabling us to factor it as a “binomial” and its conjugate: (x+square root 7)(x-square root 7) Use this idea to factor the following ...
Monday, January 21, 2013 at 5:26pm

College Algebra
Thank you so much that does make scense. I just posted one more kinda like it if you dont mind explaining?
Monday, January 21, 2013 at 5:25pm

College Algebra
2 + √3 if you have a+b then the conjugate is a-b if you have a-b then the conjugate is a+b You are creating the pattern for the difference of squares.
Monday, January 21, 2013 at 5:20pm

College Algebra
I'm wondering how to answer this. The conjugate of 2-Square root 3 is?
Monday, January 21, 2013 at 4:48pm

College Algebra
I will do #4 and #8 ,you try the rest and let me know where you run into problems #4 -4/√20 = -4/(2√5) = -2/√5 = -2/√5 * √5/√5 = -2√5/5 , now check with your calculator to see if correct #8 (√10 - 3)/(√3 + √2) = (&#...
Monday, January 21, 2013 at 10:13am

College Algebra
I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each denominator. Assume all ...
Monday, January 21, 2013 at 9:23am

college physics
pencil in water is shown. determine the angle theta about which the pencil is bent?
Sunday, January 20, 2013 at 8:45pm

math
Twelve college students were surveyed about the distance from their house to the college they attended. 12 18 54 13 15 24 8 5 14 27 1 20 1. Using the data set above, find the percentile ranking for the data point 24. (is this 75th percentile? 2. Using the data set above, what ...
Sunday, January 20, 2013 at 4:37pm

statistics help please!
Twelve college students were surveyed about the distance from their house to the college they attended. 12 18 54 13 15 24 8 5 14 27 1 20 1. Using the data set above, find the percentile ranking for the data point 24. (is this 75th percentile? 2. Using the data set above, what ...
Sunday, January 20, 2013 at 2:55pm

HELP PLEASE
Twelve college students were surveyed about the distance from their house to the college they attended. 12 18 54 13 15 24 8 5 14 27 1 20 1. Using the data set above, find the percentile ranking for the data point 24. (is this 75th percentile? 2. Using the data set above, what ...
Sunday, January 20, 2013 at 2:10pm

College Algebra help please
I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each denominator. Assume all ...
Sunday, January 20, 2013 at 11:47am

college math
typo in -8x19
Saturday, January 19, 2013 at 9:43pm

statistics
Twelve college students were surveyed about the distance from their house to the college they attended. 12 18 54 13 15 24 8 5 14 27 1 20 1. Using the data set above, find the percentile ranking for the data point 24. 2. Using the data set above, what distance corresponds to ...
Saturday, January 19, 2013 at 9:34pm

college math
divide 2x^2-8x19 byx-3
Saturday, January 19, 2013 at 9:17pm

Math
At a college basketball game, the ratio of the number of freshmen who attended to the number of juniors who attended was 3 to 4. The ratio of the number of juniors who attended to the number of seniors who attended was 7 to 6. What was the ratio of the freshman to the number ...
Saturday, January 19, 2013 at 2:50pm

College Algebra
I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each denominator. Assume all ...
Saturday, January 19, 2013 at 10:59am

Stadistics
Select the most appropriate study design for each of the following questions. (Note: All study design options may not be used and each design option can be used more than once. 1. A study is done to examine the association between a mother’s education and risk of a ...
Saturday, January 19, 2013 at 10:29am

Studying
http://www.google.com/search?q=college+s​tudy+schedule&rlz=1C1GGGE_enUS379US379&a​q=f&oq=college+study+schedule&aqs=chrome​.0.57j0l2j62l3.3768&sourceid=chrome&ie=U​TF-8
Friday, January 18, 2013 at 9:17am

anatomy
Ineed to get better organized for college and family. I am only taking 7 credit hours but i find my self staying up late to study. I'm taking anatomy and psysiology along with math 098. Please give me advice on creating a study schedule. Thank you
Friday, January 18, 2013 at 9:03am

college chemistry
A 0.300 g sample of an aspirin tablet is used to prepare 100.0 mL of a stock solution by dissolving the tablet in 1 M NaOH then diluting with distilled water to the 100 mL mark of a volumetric flask. A 0.30 mL sample of the stock solution is then transferred to a volumetric ...
Thursday, January 17, 2013 at 4:21pm

One college algebra ?
(- 25/9)^3/2 = [(- 25/9)^3]^(1/2) we are taking the square root of a negative number, so no real number.
Thursday, January 17, 2013 at 12:17am

One college algebra ?
NM it is D not a real number
Wednesday, January 16, 2013 at 10:27pm

One college algebra ?
Hello I have a question about a problem. The problem is (- 25/9)^3/2. Its multiple choice however I think they are tricking us. A. 125/27 B. - 125/27 C. 125/3 D. Not a real number I got A as an answer but feel that it is not a real number?
Wednesday, January 16, 2013 at 10:16pm

economics
Jesse and Kimberly recently graduated from college and are starting a family. Currently, they are just making ends meet with their $45,000 salary. They want to contribute the maximum amount (currently $2,000) to fully fund an Educational Savings Account when their baby is born...
Wednesday, January 16, 2013 at 9:31pm

College Algebra
You will need those brackets. Your text book does not need them because the type was probably set as a fraction with an actual line separating numerator and denominator e.g. your #1 should probably say, (I am guessing) (a+3)/(a^2-4) - (a+5)/(a^2-4a+4) which then would be = (a+...
Wednesday, January 16, 2013 at 10:32am

College Algebra
doesn't help me. This forum doesn't have formatting. a+3/a^2-4-a+5/a^2-4a+4 means nothing to me Parentheses are your only option to indicate how terms and factors are formed. Maybe at least some spaces. Judging from the answers, I'd say you mean (a+3)/(a^2-4) - (a+...
Wednesday, January 16, 2013 at 10:22am

College Algebra
I posed these one's before but added parenthesis which I think made it confusing as the actually questions do not have them. So, I'm reposting them without to see if it makes sense. If not I understand. 1. Compute as indicated. Write your answer in lowest terms. a+3/a^...
Wednesday, January 16, 2013 at 10:04am

College Trigonometry
Isn't this a right triangle? I bet it is 37, 90, and 90-37 degrees.
Wednesday, January 16, 2013 at 9:09am

College Trigonometry
From a point 200 yards from the foot of a building, the angle of elevation to the top of the building is 37 degrees. Find the measure of the angles of the triangle formed by the building, the ground, and the line of sight to the top of the building?
Wednesday, January 16, 2013 at 6:01am

college algebra
2a^2-3a=20 solve for a
Tuesday, January 15, 2013 at 9:25pm

college algebra
solve for x -4/3x-1<7
Tuesday, January 15, 2013 at 8:50pm

college algebra
(2x^3)^3/(-3x^5)^2
Tuesday, January 15, 2013 at 7:44pm

College Algebra
I posed these one's before but added parenthesis which I think made it confusing as the actually questions do not have them. So, I'm reposting them without to see if it makes sense. If not I understand. 1. Compute as indicated. Write your answer in lowest terms. a+3/a^...
Tuesday, January 15, 2013 at 4:44pm

College Algebra
(3y^6/z^7)^3 3^3 (y^6)^3 / (z^7)^3 27 y^18/z^21 (D) "more than" means greater don't know why a&b and c&d are the same, but (C) or (D) works for me. I assume there should have been <= or >= in there. You want just ">" since we want "more,&...
Tuesday, January 15, 2013 at 2:42pm

College Algebra
Last one for today! Again would appreciate a breakdown on how to get to a resolution. It is multiple choice. 1. Simplify the expression using the quotient to a power property. (3y^6/z^7)^3 a. 27y^9/z^7 b. 3y^9/z^10 c. 27y^18/z^7 d. 27y^18/z^21 2. Use a descriptive variable and...
Tuesday, January 15, 2013 at 12:34pm

College Algebra
4. none of the choices are correct proof: let y = 1 1+(5/y-10)/y+(25/y-10) = 1 + (-5) + 5 = 1 none of the choices produce 1 perhaps you have the brackets incorrect e.g perhaps the first bracket of (5/y-10) could have been (5/(y-10) ) 5. same thing in this one you have a+3/3 ...
Tuesday, January 15, 2013 at 10:36am

College Algebra
-2^2+20-|8-20|-√64 -4+20-|-12|-8 -4+20-12-8 -4 (D) since x^2 >= 0 for all real x, (D) √-16 = 4i, a complex number
Tuesday, January 15, 2013 at 10:29am

College Algebra
-2^2+20-|8-20|-squareroot of 64 = -4 + 20 - 12 - 8 = -4 √-16 ----> not a real number ( in your first one, notice the difference between -2^2 and (-2)^2 )
Tuesday, January 15, 2013 at 10:27am

College Algebra
I have a few more questions that I'm not understanding. Its multiple choice however I would appreciate a breakdown on how to solve. 4.Simplify the compound rational expression. Use either method. 1+(5/y-10)/y+(25/y-10) a. 1/y-5 b. 1/y+5 c. 6/y+25 d. 1/y+1/5 5.Simplify the ...
Tuesday, January 15, 2013 at 9:35am

College Algebra
I have a few more questions that I'm not understanding. Its multiple choice however I would appreciate a breakdown on how to solve. 1.Evaluate without a calculator, using the order of operations. -2^2+20-|8-20|-squareroot of 64 a. -36 b. 4 c. 28 d. -4 2.Simplify the ...
Tuesday, January 15, 2013 at 9:33am

College Algebra
5, Doesn't x-3=-(3-x) ? 4. look at the a term a^3 has to appear in the answer. No answer is correct. Now if the problem is ((ab)^-4)c^-7)^3, then you have to have a^-12 or 1/a^12. Again, no answer is correct. 3. what is -cubrt(8a^3/27) ? now raise that to the 4th power (...
Tuesday, January 15, 2013 at 9:19am

College Algebra
1.10x^2+15x-4x-6 b should be split in such a way that the product is equal to ac and the sum should be equal to b. 5x(2x+3)-2(2x+3) (2x+3)(5x-2) a 2.Find the LCM (18s+9)/4s^2 c 3.[(2a/3)^3]^4/3 both 3 s get cancelled and we have 16a^4/81 c 4. Problem is not clear regarding ...
Tuesday, January 15, 2013 at 9:11am

College Algebra
I need some help with a few problems. They are multiple choice but need a breakdown on how I can work the problems. Thanks for your help! 1. Factor the trinomial completely. 10x^2 + 11x-6 a. (2x+3)(5x-2) b. (2x-3)(5x+2) c. (10x+3)(x-2) d. (2x+1)(5x-6) 2. Compute as indicated. ...
Tuesday, January 15, 2013 at 8:47am

statistics
Select the most appropriate study design for each of the following questions. (Note: All study design options may not be used and each design option can be used more than once. 1. A study is done to examine the association between a mother’s education and risk of a ...
Tuesday, January 15, 2013 at 1:46am

math
Julia and Bianca both leave the college at the same time, but in opposite directions. If Bianca travels 9 mph faster than Julia and after 4 hours they are 140 miles apart, how fast is each traveling?
Monday, January 14, 2013 at 11:12pm

college bookkeeping
You would be correct in assuming A or C if the question is reffering to the transaction analysis. The question reffers to "for a period". This would mean that the question is reffering to transfering the net income to the financial statements. The only financial ...
Monday, January 14, 2013 at 1:22pm

College Algebra
Yes it was a typo it was a 3! Thanks for the help this does make scense.
Monday, January 14, 2013 at 12:28pm

College Algebra
2x^2 + 7x + 2 does not factor using rational numbers. Here is how I know Multiply the first times the last ---> 2(2) = 4 Are there two numbers which when multiplied will give you 4 and which added will give you 7 ? Nope! I think your problem is meant to say: (x^2-7x-18)/(x^...
Sunday, January 13, 2013 at 8:52pm

College Algebra
I need help factoring a problem and cant seem to get it right. The one I'm stumped on is 2x^2+7x+2. I have to compute as indicated and write final in the lowest terms. The whole problem is x^2-7x-18/x^2-6x-27*2x^2+7x+2/2x^2+5x+2
Sunday, January 13, 2013 at 7:18pm

math
at a college book store Carla purchased a math text book and a novel that cost a total of $54, not including tax. If the price of the math math textbook, m is more than 3 times the price of the novel, n what is the price of each book I'm off and coming home?
Sunday, January 13, 2013 at 1:35pm

math
at a college book store Carla purchased a math text book and a novel that cost a total of $54, not including tax. If the price of the math math textbook, m is more than 3 times the price of the novel, n what is the price of each book I'm off and coming home?
Sunday, January 13, 2013 at 1:35pm

college algebra
x=1 x=1/2 I use the quadratic formula.
Saturday, January 12, 2013 at 2:30pm

college algebra
What are the zeroes of f(x) = 2x^2 -3x + 1
Saturday, January 12, 2013 at 1:50pm

college English 101
Write an expository essay an harmatan weather
Saturday, January 12, 2013 at 4:42am

everything
I hope you are not in college. a.
Friday, January 11, 2013 at 5:24pm

College Physics
The masses of the earth and moon are 5.98 × 1024 and 7.35 × 1022 kg, respectively. Identical amounts of charge are placed on each body, such that the net force (gravitational plus electrical) on each is zero. What is the magnitude of the charge placed on each body?
Thursday, January 10, 2013 at 9:17pm

College Algebra
rearrange things a bit: x^2+14x + y^2+18y = -81 x^2+14x+49 + y^2+18y+81 = -81 + 49 + 81 (x+7)^2 + (y+9)^2 = 49 now the rest is easy. C'mon back if you get stuck.
Thursday, January 10, 2013 at 12:07pm

College Algebra
Write the equation of the circle in standard form. Find the center, radius, intercepts and graph the circle. x^2+y^2+14x+18y=-81
Thursday, January 10, 2013 at 12:00pm

Math For College Readiness
Thank you very much, Steve :)
Wednesday, January 9, 2013 at 4:51pm

Math For College Readiness
1. (8a)/(3b^2) * (5)/(6ab) = (40a)/(18ab^3) = 20/(9b^3) 2. (14x)(3x+1)/(x-7) * 3(7-x) / (2(3x+1)) = 42x(3x+1)(7-x) / 2(x-7)(3x+1) = -21x 3. (9x+3)/x / (3x+1)/12 = 3(3x+1)/x * 12/(3x+1) = 36/x
Wednesday, January 9, 2013 at 4:49pm

Math For College Readiness
1. (8a / 3b^2) / (6ab / 5) 2. (42x^2 + 14x) / (x - 7) / (2 + 6x / 21 - 3x) 3. (9 + 3 / x) / (x / 4 + 1 /12)
Wednesday, January 9, 2013 at 4:42pm

Math For College Readiness
I have trouble interpreting you run-on compound fractions. How about some parentheses so we know what's what? (x^-1 + x^-2)/(9-x^2) (1/x + 1/x^2)/(9-x^2) (x+1)/(x^2 (9-x^2)) This doesn't simplify much.
Wednesday, January 9, 2013 at 4:35pm

Math For College Readiness
Simplify the Complex Fractions 1. 8a / 3b^2 / 6ab /5 2. 42x^2 + 14x / x - 7 / 2 + 6x / 21 - 3x 3. 9 + 3 / x / x / 4 + 1 /12 4. (x^-1 + x^-2)divided by (9x^-2) Ans. #1: 20 / 9 Ans. #2: 42x^2 + 6x + 4 / -2x + 14 Ans. #3: 144 / x / 3x + 1 I don't know how to do #4
Wednesday, January 9, 2013 at 4:23pm

College English
These are terms that must be specific to your class and/or textbook. What does your book say about "two-way process" and "paired" skills?
Tuesday, January 8, 2013 at 8:33pm

College English
Describe how communication is a two-way process and explain why communication skills are paired.
Tuesday, January 8, 2013 at 7:41pm

san bernardino valley college
y=2x+1
Monday, January 7, 2013 at 10:13pm

English-writeteacher
Apologies for the re-post but it didn't seem like my last post would be answered. I'm writing a short story for english based on the painting Nighthawks and I would really like some feedback. Any type of feedback would be highly appreciated. I'm kind of stuck. ...
Monday, January 7, 2013 at 8:46pm

English III short story
I'm writing a short story for english based on the painting Nighthawks and I would really like some feedback. I'm kind of stuck. Thanks in advance! The Job They were just names. Just two insignificant names in the little black book, just like all the rest. Targets. ...
Monday, January 7, 2013 at 7:15pm

College
When a child repeats a behavior or action simply to observe that action, you would not infer that
Sunday, January 6, 2013 at 5:12pm

college algebra
let f(x) be polynomial function. explain how to use the factor theorem to check if x) is a factor of F(x)
Friday, January 4, 2013 at 11:48am

For Kristy - re Hamlet
http://www.jiskha.com/display.cgi?id=135​7147928 and http://satomko.hubpages.com/hub/Fortinbr​as-as-a-Foil-for-Hamlet Do. Not. Plagiarize. If you are not clear on what plagiarism is and how NOT to plagiarize from a source, read through this entire webpage from ...
Thursday, January 3, 2013 at 12:33am

College
http://en.wikipedia.org/wiki/Viscosity
Tuesday, January 1, 2013 at 9:27pm

College
Difference between analytical and other instrumentation ? I want atleast 10points
Tuesday, January 1, 2013 at 6:45pm

College
Tmrw my exm plz give me soon reply ,about Measurment of viscosity and viscosity.
Tuesday, January 1, 2013 at 6:33pm

Asworth college
which of the sentences uses modifiers correctly? a. Kurt and his hockey teamm ates nearly cooked two hundred pancakes for the breakfast fundraising event. b. Rudolph enjoys eating curries from the indian delicatessen with a lot of spices. C. on the phone the telemarketer ...
Tuesday, January 1, 2013 at 6:01pm

English - Personal Statement
Read and study these and all the links on each webpage: http://www.college-admission-essay.com/a​dmissionessayresources.html http://www.hpregional.org/departments/en​glish/mhassenplug/100%20topics.html And some to avoid: http://www.cbsnews.com/8301-505145_162-5&#...
Sunday, December 30, 2012 at 4:31pm

English - Personal Statement
"personal statement for acceptance" for what? For a job? For college admission? Or what?
Sunday, December 30, 2012 at 4:28pm

English - Personal Statement
How do you write a good personal statement for acceptance? (Any topic). I drafted, but I did not know what to write about, so I just wrote about my sister :/ My sister and I are not alike in any way, we do not even share the same blood. Growing up though, I was always in her ...
Sunday, December 30, 2012 at 4:03pm

Art Appreciation (college level)
to know what kind of question will come in my exams
Saturday, December 29, 2012 at 2:23pm

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