Friday

May 27, 2016
Total # Posts: 3,111

**Physics**

A stone is thrown from a 50m high cliff and lands 5 seconds later, 40m from the base of the cliff. At what speed and angle was the stone thrown?
*February 22, 2011*

**math**

Francisco has $2000. He invested part at 7% and the rest at 12%. If his annual return was $215, how much did he invest at each rate?
*February 21, 2011*

**calculus**

y = log7(x^2 - 6x - 2) this is base seven is the answer 2x-6/(x^2-6x-2)
*February 21, 2011*

**Physics-Optics**

A point source of light illuminates an aperture 4.00m away. A 18.0 cm -wide bright patch of light appears on a screen 2.00m behind the aperture. I have been trying to use the equation w=(2*wavelength*distance)/aperature width. However, I am not given wavelength and the type of...
*February 21, 2011*

**chemistry**

Find the mass of barium metal (in grams) that must react with O2 to produce enough barium oxide to prepare 1.1 L of a 0.10 M solution of OH^ -.
*February 19, 2011*

**science! **

how is nickel used in glass?
*February 18, 2011*

**calculus wxmaxima**

i found it but like i understand what youre saying i just dont know how to plug it in wxmaxima is it possible if you can show me thanks very much
*February 16, 2011*

**calculus wxmaxima**

does anyone know how to approximate the are and circumfrence of the region bounded by the given curves y=cos(x^2 +(100493/100000)), y=1+x-X^2 i already did the area but i need help with the circumference
*February 16, 2011*

**u.s. history**

How did the South, with fewer supplies and resources, manage to stall a Northern victory for four years?
*February 16, 2011*

**calculus wxmaxima**

WEll THANKSSSS ALOTTTTTTTTTTTTTTTTT!
*February 16, 2011*

**calculus wxmaxima**

okay so i put y=1+x-X^2 found the derivative 1-2*x then i pluged that in into sqrt(1+1-2*x)^2) then i did the romberg thing so is this right i got -1.4336 for this one
*February 16, 2011*

**calculus wxmaxima**

okay so for the first f(x) i plug in cos(x^2 +(100493/100000))find the derivative then do i do the same for y=y=1+x-X^2 ?
*February 16, 2011*

**calculus wxmaxima**

i understand but i just dont know how to plug it in wxmaxima is it possible if you can show me thanks very much
*February 16, 2011*

**calculus wxmaxima**

Thank you very much but i am still confused with the arc length or the circumference
*February 16, 2011*

**calculus wxmaxima**

does anyone know how to approximate the are and circumfrence of the region bounded by the given curves y=cos(x^2 +(100493/100000)), y=1+x-X^2
*February 16, 2011*

**AP CALC**

A temperature of a 10m long metal bar is 15C at one end and 30C on the other end. Assuming that the temperature increases linearly from the cooler end to the hotter end, what is the average temperature of the bar? Also, explain why at least one place on the bar must have this ...
*February 15, 2011*

**calculus**

Find the area bounded by the x-axis ,the curve y= 1/x+2, x=0,y=0, and x=5
*February 15, 2011*

**calculus **

use the approximations ln 2=0.693 and ln= 1.609 together with the properties of natural logarithms to calculate an approximation to ln 40
*February 15, 2011*

**Math**

Solve by the elimination method 7x-y=17 x+7y=31 What is the solution of the system?
*February 14, 2011*

**Spelling/Grammer**

_____ of the nature center is one of the year's goals. What is the answer... from the word box? _______________________________________ WORD BOX _______________________________________ 1. Persuasion 2. Discrimination 3. Expansion 4. Opposition 5. Constitution 6. Narration ...
*February 14, 2011*

**exponents**

how do i find the value of exponents
*February 14, 2011*

**english**

what are you supposed to do with this?
*February 13, 2011*

**Clinical Procedures**

nevermind its b
*February 13, 2011*

**Clinical Procedures**

What is used to improve the quality of a blood specimen? a) an anticoagulant b) additives c) a tube with a red stopper d) a tourniquet my answer is c. please help!
*February 13, 2011*

**Clinical Procedures**

What is one of the most used piece of laboratory equiptment? A. Refridgerator B. health hazard C. MRI machine D. X-ray machine my answer is A. but i cant find the answer anywhere in my book. Please help!
*February 13, 2011*

**statistics**

Health Club Schedule The time per workout an athlete uses a stairclimberis normally distributed with a mean of 20 mins and a standard deviation of 5 min. An athlete is randomly selected. Find the probability that the athlete uses a stairclimber between 20 and 28 mins.
*February 11, 2011*

**Science**

n could be nuclear
*February 10, 2011*

**algebra**

During the month of february, the depth,d, of snow in inches at the base of one ski resort can be approximated by adding 7 to twice the number of days, t, since Jan. 31.
*February 10, 2011*

**Algerbra 1**

Shane and Kate are preparing to go on long car trips with their families. Shane bought 8 books and 2 CDs for $73.60. Kate bought 3 books and 4 CDs for $69.85. Both totals were withour tax. All of the books were the same price and all of the CDs cost the same. How much did a ...
*February 10, 2011*

**Clinical Procedures**

Why should a recording in the medical record never be erased or obliterated? A. It makes it harder to read the chart. B. The patient may not recieve the proper care. C. It will invalidate the legal value, which would be important in any litigation. D. It's better to write ...
*February 10, 2011*

**Clinical Procedures**

On which type of route can a miroorganism travel from one place to another? A. Botulism B. Universal Precaution C. Vector D. Fungi i am torn between A and D. however my answer is A. please help!
*February 10, 2011*

**Chemistry**

So, the soulubility for Kno3 IS 245 of 100 grams in water. The solubility for CuSo4 is 180 grams over 100 grams of water. How would you solve that?
*February 9, 2011*

**Chemistry**

Determine the number of grams of water which are required to dissolve a mixture of 25 g of KNO3 and 2.0 g of CuSo4 * 5H20 AT 100 Degrees celscius?
*February 9, 2011*

**Science**

Determine the number of grams of KNO3 which will dissolve in 100 grams of H20 at 100 degrees celscius?
*February 9, 2011*

**science**

a roller coaster has an average speed of 5.0 m/s. if the roller coaster ride last 40 seconds, what distance does it travel?
*February 9, 2011*

**Math**

No it was a typo sorry
*February 8, 2011*

**Math**

How do you solve for 4y+8=1-5(3y-10)!
*February 8, 2011*

**Chemistry**

Could you break that down a little? I don't completely understand.
*February 7, 2011*

**Chemistry**

Gold can be recovered from sea water by reacting the water with zinc, which is refined from zinc oxide. The zinc displaces the gold in the water. What mass of gold can be recovered if 2.00g of ZnO and an excess of sea water are available? 2ZnO + C -> 2Zn + CO2 2Au^+3 + 3Zn...
*February 7, 2011*

**Chemistry**

The energy used to power one of the Apollo lunar missions was supplied by the following overall reaction: 2N2H4 + (CH3)2N2H2 + 3N2O4 -> 6N2 + 2CO2 + 8H2O For the phase of the lunar module ascended from the surface of the moon, a total of 1200kg N2H4 was available to react ...
*February 6, 2011*

**MATH**

Adam was walking down the stairs at his work one day. Adam began on the top step and had already gone down seven steps when he saw Reanna on the ground floor beginning to come up the stairs. Reanna goes up two steps for every one step Adam goes down. Adam was shocked to see ...
*February 6, 2011*

**Algebra 1**

I agree with Amy.
*February 6, 2011*

**insurance form preparation**

what is a type of insurance policy outling the benefits to be paid for each type of service normally based on the usual and customary rates (UCR) for each community? A. disability insurance B. SSDI C. Free-for-service D. SSI my answer is C. please help!
*February 5, 2011*

**insurance form preparation**

What form should be attached to a CMS-1500 form submitted to a secondary insurance company? A. a copy of the CMS-1500 sent to the primary insurance company. B. An Explanation of Benefits (EOB) C. a copy of the patient's medical treatment record. D. a copy of the patient&#...
*February 5, 2011*

**calculus **

∫[3√3:(2x^2-3x),]
*February 4, 2011*

**Accounting Ethics**

Please, please, please help me I do not understand the material!! This is for a 30 point checkpoint that was due Wednesday. I haven't gotten far because I don't get the stakeholder impact analysis. I got 95% on the appendix B matrix about consequentialism, deontology, ...
*February 4, 2011*

**Accounting Ethics**

Please, please, please help me!! I got 95% on the appendix B matrix about consequentialism, deontology, and virtue ethics. I also understand the 3 approaches to decision making the 5-question, Pastin's and Moral Standards approaches, but do not understand this assignment ...
*February 3, 2011*

**Ethics Accounting**

I got 95% on the appendix B matrix about consequentialism, deontology, and virtue ethics. But do not understand this assignment about stakeholder impact analysis. Can someone please get me started? Describe, in 200 to 300 words, how you might conduct a stakeholder impact ...
*February 3, 2011*

**Business Ethics**

I got 95% on the appendix B matrix about consequentialism, deontology, and virtue ethics. But do not understand this assignment. Describe, in 200 to 300 words, how you might conduct a stakeholder impact analysis of Scenario 1 of Appendix B using each of the stakeholder impact ...
*February 2, 2011*

**Algebra 2**

i am trying to solve the equation. I have to find 2 more roots of the X^4 equation
*January 27, 2011*

**Algebra 2**

my roots are (1+isq.root2)(1-isq.root2) I then used long division: X^4-4X^3+4X^2-9/X^2-X-4 I got the answer X^2-8X+32 with a remander of 119. Where did I go wrong?
*January 27, 2011*

**algebra 2**

2X^4-9X^3+13X^2-X-5=0 Given that one root is 2+i, solve the equation. So far I have it set up like this: 2X^4-9X^3+13X^2-X-5/X^2-4X+5 I don't know how to get the answer, I know that I have to use long division but when I started to try it I kept getting weird answers. ...
*January 27, 2011*

**algebra 2**

2X^4-9X^3+3X^2-X-5=0 Given that one root is 2+i, solve the equation. So far I have it set up like this: 2X^4-9X^3+3X^2-X-5/X^2-4X+5 I don't know how to get the answer, I know that I have to use long division but when I started to try it I kept getting weird answers. Please...
*January 27, 2011*

**Algebra-check me**

pretax bill in first city = $x : Tax = 5% pretax bill in second city = x-1000: Tax = 4% .. 0.05x+0.04(x-1000)= 387.50 0.05x+0.04x-40=387.50 0.09x=387.50+40 0.09x=427.50 /0.09 x= $4750 Bill in first city
*January 27, 2011*

**Algebra**

A theater group made appearances in two cities. The hotel charges before tax in the second city were $1,000 lower than in the first. The tax on the hotel bill was 5% in the first city and 4% in the second. After the trip, the total tax paid on accommodation expenses was $387....
*January 27, 2011*

**math**

Perimeter is 2L+2W=P L=length W=width P=perimeter Just plug it in.
*January 27, 2011*

**algebra 2**

oh I get it thanks
*January 27, 2011*

**algebra 2**

my bad the original equation is: 2X^4 - 9X^3 + 13X^2 - X - 5 = 0
*January 27, 2011*

**algebra 2**

2X^4-9X^3+3X^2-X-5=0 Given that one root is 2+i, solve the equation. So far I have it set up like this: 2X^4-9X^3+3X^2-X-5/X^2-4X+5 I don't know how to get the answer, I know that I have to use long division but when I started to try it I kept getting weird answers. Please...
*January 27, 2011*

**Algebra**

Compute the value of the discriminant and give the number of real solutions to the quadratic equation. 2x^2+5x-7=0 Discrimnant= number of real solutions=
*January 27, 2011*

**Algebra**

Find the midpoint M of the line segment joining the points C = (-4,-5) and D = (2,-1). I got (-1,-3) can you check me? Thanks
*January 27, 2011*

**Biology**

What is the relationship between an increase in light intensity and photosynthetic rate in leaves from a corn plant? How does this relationship compare with the tomato plants?
*January 27, 2011*

**Chemistry**

I understand how to balance equations when the full equations are given to me but I don't understand how to write a single replacement reaction. Help Me??
*January 24, 2011*

**Medical Information Management**

Medicaid eligibility is determined by? A. National Committee for Quality Assurance B. state of residence C. health care facility D. Centers for Medicare and Medicaid my answer is B, state of residence. i cant find this anywhere in my book. however when i looked it up online ...
*January 23, 2011*

**Medical Information Management**

i found the answer. it was C registered health information technition. thanks.
*January 23, 2011*

**Medical Information Management**

Which of the following health care professionals has overall responsibility for the accuracy of the medical record? A. attending physician B. chief executive officer C. Registered health information technician D. Registered health information administrator im torn between C ...
*January 23, 2011*

**Medical Information Management**

thanks!
*January 23, 2011*

**Medical Information Management**

A company that provides comprehensive health care services on a prepayment basis to voluntarily enrolled participants is called a? A. Medicaid participant. B. health maintenance organization (HMO) C. preferred network association. D. Medicare provider. my answer is B, HMO. ...
*January 23, 2011*

**english**

What would be difficult to procure in the desert?
*January 23, 2011*

**math**

how do you work this out?
*January 23, 2011*

**Algebra**

Solve for v. v+6/5=3/5v-7/3 Simplify your answer as much as possible.
*January 23, 2011*

**Algebra**

Graph the inequality. 4x+3y>-3
*January 22, 2011*

**Medical Information Management**

You're the new supervisor for the filing area of the health information management department. You notice a large rate of misfiles using the terminal digit filing system.What is the best approach to address the problem? A. Eliminate the terminal digit filing system. B. ...
*January 22, 2011*

**Medical Information Management**

i am correct. :)
*January 22, 2011*

**Medical Information Management**

John Doe, a new patient, is assigned a medical number that has already been assigned to another patient. With a unit numbering system, how is this corrected? A. Both patients keep the same number. B. Move both patients documentation forward to the new number. C. Cancel both ...
*January 22, 2011*

**Medical Information Management**

thank you!
*January 22, 2011*

**Medical Information Management**

Medical records at willow nursing home have the following format: database, problem list, initial plan, and progress notes. What type of record format is this? A. Source-oriented B. Integrated C. Problem-oriented D. Serial My answer is a source oriented. am i right?
*January 22, 2011*

**Medical Information Management**

The original medical record is the property of the A. physician B. patient's attorney C. patient D. hospital or facility my answer is D. hospital or facility please, am i right?
*January 22, 2011*

**College Math**

What is the equation of the line Y=3X-2 rotated 60 degrees clockwise about the point (2,5)? PLEASE HELP
*January 22, 2011*

**Math**

-Distribute the ^-2 to both the numerator and denominator first [(-1)^-2/(2)^-2]^3 -Simply the exponents within the parenthesis second [1/(1/4)]^3 -Simplify within the parenthesis [4]^3 -simplify 64
*January 22, 2011*

**ENGLISH**

WHY DO AUTHORS USE COMPLEX SENTENCES THEIR WRITING. How DOES THEY help emphasize and explain the author’s point?
*January 20, 2011*

**algebra **

hi i am in love with' a quy named bran n he loves me back but id qe t it bc im so UGULY im uqly as HELL n ill laways will be
*January 20, 2011*

**Physics**

The position of a particle is given by the function x = ( 6 t^3 - 3 t^2 + 2) m, where t is in s. (a) At what time or times is vx = 0 m/s? (Enter NONE for t2 if there is only one time.) Smaller time, t1 = Larger time, t2 = (b) What are the particle's position and its ...
*January 20, 2011*

**health**

What is the average height of a male and female in 2011? I searched everywhere but could not find the information.
*January 18, 2011*

**chemistry**

this is what my lab report looks like (minus the graph of the first part) im stuck on part II I. A. unknown 1 melting point range (uncorr) 50.0-53.0 melting point range (corr) 50.2-53.2 (because of graph from part 1 of experiment) melting point average 51.7 b unknown 2 melting...
*January 18, 2011*

**chemistry**

this is what i have so far.. A. unknown 1 melting point range (uncorr) 50.0-53.0 melting point range (corr) 50.2-53.2 (because of graph from part 1 of experiment) melting point average 51.7 b unknown 2 melting point range (uncorr) 65.0-67.0 melting point range (corr) 65.6-67.6...
*January 18, 2011*

**chemistry**

Melting point experiment: how do i know the calibration curve? we did an experiment where: week one we did a graph with the melting points of different compounds. week 2 we used the graph to correct the melting point of unknown # 1 and then unknown # 2 we mixed unknown 2 with ...
*January 18, 2011*

**calculus (integral test)**

use integral test to determine whether the series is convergent or divergent infinity (sum symbol) n=1 1/(sqrt n)^5
*January 18, 2011*

**chemistry**

Use delta ( + or - ) to show direction of expected polarity? for each of the bonds indicated. do you use electronegative numbers? how? I know the answers (i have the book) i just want to know how im supposed to know it for a test. a) H3C - CL b) H3C - NH2 c) H2N - H d) H3C - ...
*January 17, 2011*

**English**

I need a plausible solution to genocide.
*January 17, 2011*

**chemistry**

A sample of propane(c3h8)has 3.84x10^24 H atoms. a) how many carbon atoms does the sample contain? b) what is the total mass of the sample?
*January 15, 2011*

**Biotechnology**

What are the active ingredients in cocaine? (What causes people to abuse it?)
*January 13, 2011*

**U.S History**

How has media affected American Society through out history? Provide Three Examples.
*January 13, 2011*

**math**

Ratios and Rates. Questions: What is the ratio of gold protons to silver protons with gold being 79 and silver being 47?
*January 12, 2011*

**calculus**

A sequence{an} is given by a1=sqrt(2), an+1=sqrt(2*an). a) by induction or otherwise, show that {an} is increasing and bounded above by 3. Apply the Monotonic Sequence Theorem to show that lim n-->infinity an exists. b) Find lim n-->infinity an.
*January 12, 2011*

**chemistry**

is this correct? sp3 CH3-CH3 sp2 CH2=CH2 sp CH≡CH im trying to figure out sp3 and sp2c
*January 11, 2011*

**chemistry**

Draw a line-bond structure for propene,CH3CH=CH2; indicate the hybridization of eachcarbon, and predict the value of each bond angle. Can someone explain the steps, im lost with how our teacher explained, about sp2 and sp3, ect. help?
*January 11, 2011*

**english**

does anyone know any modern movies or songs about the ocean? "Follow the river and you will find the sea." French proverb
*January 10, 2011*