Questions Asked on
February 15, 2008

Trig(3 all with work)
1)Find the exact value of cos 105 by using a halfangle formula. A)sqrt 2  sqrt 3 /2 B)sqrt 2  sqrt 3 /2 C)sqrt 2 + sqrt 3 /2 D)sqrt 2 + sqrt 3 /2 cos 105 cos 105 = cos 210/2 sqrt 1 + 210/2 sqrt 1 + sqrt 3/2 /2 sqrt 2 + sqrt 3/2 which is D 2)Find the
asked by Jon 
Algebra Quadratic Equations
What are the pros and cons of completing the square as a way to solve quadradic equations?
asked by Marysvoice 
American History
Can anyone tell me what was the importance of each battle/battle site of the Civil War battles that took place Nov 1864. They were Johnsonville Tenn, Bull's Gap Tenn, Columbia Tenn, Spring Hill Tenn, Franklin Tenn, Griswoldville Georgia, Buck Head Creek
asked by John 
Business
The initials "L.S." at the end of a document: a. indicate that the signatures are lawful. b. show where the seal should be placed. c. serve as a substitute for a wax seal. d. both b and c. I believe the answer is D....both b&c...is that correct?
asked by Mike 
britian since 1948
How has britian changed since 1948
asked by jessica 
accounting
Multiple choice 1. The type of product costing system used by a company is dictated by the : a) plant supervisor b) project manager c) company president d) production process 2. Activity based costing traces production costs to a) activities within the
asked by john 
Chemistry please help!
Nuclei with higher than desired neutrontoproton ratio tend to undergo which type of decay? alpha beta gamma positron
asked by Mary 
Trig
Which expression equivalent to: cos(theta + pi/2). A)cos theta B)cos theta C)sin theta D)sin theta my book doesnt give examples of this but my crack at it would be C b/c distributive property? and 2cos theta = sin theta
asked by Jon 
Physics
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Assume the orbit to be circular and 400 km above the surface of the Moon. At this altitude, the freefall acceleration is 1.11 m/s2. The radius of the Moon
asked by Nancy 
Math
The following scores were recorded on a 200point final examination:193,185,163,186,192,135,158,174,188,172,168,183,195,165,183. Find the final examination score. Find the median final examination score. Is the mean or median a more useful representative
asked by Babygirl 
math
Ordered: Ceclor 0.375g po bid. On hand: Ceclor Oral Suspension 187 mg per 5 ml. How much medication will you administer?
asked by kesha 
chemistry
Assayed for LDH activity were 5 microliters of a sample that was diluted 6 to 1. The activity in the reaction vessel, which has a volume of 3 mililiters, is 0.30 U. What is the ΔA/min observed? What is the relative activity of the original sample? Here
asked by stew 
Trig
Find the exact value of sin2(theta) if cos(theta) = sqrt 5/3 and 180 < theta < 270. A)1/9 B)4 sqrt 5/9 C)1/9 D)4 sqrt 5/9 B? sin^2(theta) + cos^2(theta) = 1 sin^2(theta) = 1  cos^2(theta) sin^2(theta) = 1  (sqrt 5/3)^2 sin^2(theta) = 1  (sqrt 25/9)
asked by Jon 
chemistry
what are the advantages of using a blue flame instead of a yellow flame for heating objects on a bunsen burner?
asked by ss 
chemistry
what is the difference between a percent saturated solution of ammonium sulfate and a percent w/v solution of ammonium sulfate?
asked by stew 
science
Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3:1. If the allele are designated (R & r) respectively, what is the probable genotypes of the wrinkled seeds which were produced
asked by Andrea 
statistics
A new treatment for AIDS is to be tested in a small clinical trial on 15 patients.The proportion p^ who respond to the treatment will be used as an estimate of the proportion p of (potential)responders in the entire population of AIDS patients. If in fact
asked by todd 
physics
The coil of a generator has a radius of 0.12 m. When this coil is unwound, the wire from which it is made has a length of 5.5 m. The magnetic field of the generator is 0.10 T, and the coil rotates at an angular speed of 25 rad/s. What is the peak emf of
asked by rick 
Algebra
Fomula: A=1/2(b1+b2)h A=area of a trapezoid b1=width at the top b2width at the bottom h=height A 7foor tall trapezoid has 42 square feet of area. If is is 9 feet wide at the bottom, how far across is it at the top?
asked by G 
accounting
identify three external users of accounting information and indicate two questions they might seek to answer through accounting information.
asked by kelly 
Physics problem
A transformer has 50 turns in its primary coil and 250 turns in its secondary coil. 12V is connected to the primary. a. Find the voltage across the secondary coil. b. Find the current in a 10 ohm device connected to the secondary. c. Find the power
asked by Peyton 
Physics problem
Neon signs require about 12000V for their operation. The primary operates from 120V lines. a. What is the ratio of the number of loops in the secondary to the number of loops in the primary? b. What is the ratio of the power delivered to the secondary coil
asked by Peyton 
Algebra
Forgot this part to the first desperate What is the slope and yintercept of the line in part b? How do you know?
asked by Desperate 
accounting
True/Falses 1. Period costs are not considered when costing products for inventory. 2. All direct labor costs during a period of time should be considered product costs and should be temporarily accumulated in the work in process inventory account. 3.
asked by john 
religious studies
Who was Jesus'most beloved desciple?
asked by tanya 
statistics
A population forms a normal distribution with a mean of sigma=75 and a standard deviation of 20.  What proportion of the sample means for samples of n=25 have vales less than 80? In other words, find p(M>79) for n=25  What proportion of the sample means
asked by Taryn 
Mth finding modes
Find the mode for 41,43,56,67,69,72
asked by Babygirl 
math
Asalesperson drove 238,159,87,163 and 198 miles on a 5day trip.What was the mean number of miles driven per day?
asked by Babygirl 
Math find the mode
Find the mode for 9,8,10,9,9,10,8
asked by Babygirl 
HELP! parenthetical citation
I have a whole paragraph that basically summarizes a story. I have my own insight in the story. For example.. in this story blah blah blah I think that so and so blah blah blah. after doing this he did blah ... etc. i'm supposed to have three citations
asked by Ashlee 
math
In four years Cathy's cat Byte will be three fourths as old as Cathy will be. Four years ago, Byte was only half as old as Cathy was. How old are Cathy and her cat? I am struggling to solve this two variable word problem. please help.
asked by jason 
math
what is the general equation for halflife?
asked by Anonymous 
Accounting 102
Turner and Isham agreed to form a partnership. Turner contributed $ 200,000 in cash, and Isham contributed assets with a fair market value of $ 400,000. The partnership, in its initial year, reported net income of $ 120,000. Assume that the partnership
asked by Precious 
Math
The following scores were recorded on a 200point final examination:193,185,163,186,192,135,158,174,188,172,168,183,195,165,183. Find the final examination score. Find the median final examination score. Is the mean or median a more useful representative
asked by Tim 
chemistry
when heating a substance over a bunsen burner where should the object be placed for most efficient heating? please explain.
asked by ss 
Quadratic equations
Building a rectangular room with fixed perimeter of 280ft what dimentions would yield the maximum area? What dimentions would yeild the minimum area?
asked by Marysvoice 
chemistry
Write the oxidation and reduction halfreactions of a corroding galvanized nail exposed to rain. The question says "galvanized" so its zinc. Zn(s) > Zn2+(aq) + 2e potential: +0.76V rain is slightly acidic, so i thought it would be O2(g) + 4H+ + 4e >
asked by william 
science
Boiling points and freezing points are examples of? a. physical properties b. matter c. chemical properties d. energy i am pretty sure it is a but i just need to have someone assure to me i am right
asked by josh 
math
I need help bad. Fractions 1)1/3 + 5/12 + 4/5 = 2)13/15  11/20 = 3)1 1/15 + 3 3/10  2 4/5 = 4)Robin ran 5 1/3 mi on Sunday, 2 1/4mi on Tues, and 3 1/2mi on Fri. How far did she run during the week? 5)The interest rate on an auto loan in May was 12 3/8%.
asked by Tonya 
Trig
Find the exact value of sinx/2 if cosx = 2/3 and 270 < x < 360. A)1/3 B)1/3 C)sqrt 6/6 D)sqrt 6/6 C, since I KNOW cosx is always positive but I don't know the work involved. I know the half angle formula
asked by Jon 
communication
CheckPoint: Press Releases • Resource: FBI Press Releases Web site: • Due Date: Day 5 [Individual] forum • Review a few sample press releases from the FBI Web site. Select and identify one that is wellwritten and discuss what makes it effective. In
asked by Ree 
science
1. What will happen to the pressure in your tires if the temperature drops 40 degrees over the night? a) Pressure will increase b) Pressure will decrease c) Pressure will not change d) Cannot determine
asked by josh 
Math
I need serious help. Tried to work it out but I just couldn't get the correct answer. Benjamin and olivia are putting a new floor in their kitchen. To get the floor up to the desired height, they need to add 1 /8ft to subfloor. They can do this in one of
asked by Kim 
science
what are 3 types of symbiosis
asked by charlie 
Physics
The international standard Kilogram in Paris is stored under double bell jars. What is the prupose of the jars? Is it because the jars create a vacuum to prevent the standard from gaining mass due to oxidation? If so, why double jars? Are there any other
asked by Supaman 
science
1. What will happen to the pressure in your tires if the temperature drops 40 degrees over the night? a) Pressure will increase b) Pressure will decrease c) Pressure will not change d) Cannot determine 2. Explain, on a molecular level, why this happens.
asked by josh 
chemistry
An enzyme sample contains 24 mg protein/mL. Of this sample, 20 microliters in a standard incubation volume of 0.1 mL catalyzed the incorporation of glucose into glcogen at a rate of 1.6 nmol/min. Of this sample, 50 mL were fractionated by ammonium sulfate
asked by stew 
algebra
You are planning to spend no less than $6,000 and no more than $10,000 on your landscaping project. How do you write an inequality that demonstrates how much money you will be willing to spend on the project.
asked by Casey 
science
how do protein assists with immunity
asked by jane 
Spelling
please help I can't get these lost few words thank you I need the prefix and suffix and the Combining form for each word if there is one thank you so much ahead of time for your help Etymology Mastectomy Neuroma Tachycardia Endotracheal
asked by Amy 
pschcology
Skills Assessment Activity Throughout your textbook, you will find an assortment of interesting “tests” that sample a broad range of skills, abilities, and traits. Although these exercises allow a glimpse at aspects of personality, the results must be
asked by jenny 
basic chem
why is it not smart to replace coefficients in a blanced equation with the mass of each substance?
asked by Supaman 
Music
My question is what compositional techniques were used in the 20th century? I have looked everywhere including my book and cannot find compositional techniques defined. Can you give me the definition of compositional techniques and then maybe I can figure
asked by Cynthia 
pschcology
Skills Assessment Activity “tests” that sample a broad range of skills, abilities, and traits. Although these exercises allow a glimpse at aspects of personality, the results must be interpreted with caution. For this assignment, complete the
asked by jenny 
Environmental Science
What levels of environmental analysis must a Federal agency charged with building public works consider for each project? What are the criteria for choosing each of these? I tried Googling for info on this question, but I can't find anything good. Thanks
asked by Eric 
Chemistry
How much volume in liters will 100.0 grams of oxygen occupy at 100 degrees celcius and 100 atm pressure?
asked by Mark 
music
How was the music of the 1960's different from the music of the 1970's?
asked by Taryn 
math
Sorry....misposted the original question... 350/(400*50^(3/2)) = X+(50+X)^(3/2) Thanks for the help
asked by Sherrill 
business
the most important differences between objectoriented programming languages and generations 14 of (often called top down or structured) programming languages. How are they similar?
asked by db 
Indiana History
Name all the land features such as mountains, plains, deserts etc.
asked by Richard 
Math...For All Math Tutors
I would like to know how many of the people answering math questions here are current math teachers, were math teachers at one time, are current tutors working for a tutoring company or simply love math. What's your story? I would love to hear from all
asked by Guido 
American History
Why did King George III taxed the colonists?
asked by Richard 
Science
How do scientists separate aniamals into classes?
asked by Richard 
Social Studies
"That drug companies should NOT waive patents on HIV drugs in the developing world" Is this statement saying that drug companies should not give out drugs for free? What would be some points I could use to back up this argument please?
asked by Oharna 
Math
Please double check me. The last problem I couldn't figure out. Thanks 18. 13/18 + 11/18 = 24/18= 4/3 38. 9/11 – 3/11 + 7/11 = 13/11=2 1/11 44. 7/1 + 12/1 + 21/1= 40/1=40 50. 3/8 + 3/8 + 3/8 = 9/8 = 1 1/8 12, 20, and 35 = 7*5*3*2*2= 420 13/15 – 11/20 =
asked by Trina 
Macro economics
Between year 1 and 3 the price level has risen and real GDP has fallen. During the same time W has risen. Identify one comination of changes in the labor supply and labor demand that could have the effect in the classical goods and services market.
asked by Christie 
Chemistry please check
1. All of the naturally occurring radioactive decay series end when the radioactive elements have decayed to bismuth (Bi) hydrogen (H) lead (Pb) uranium (U) answer: Uranium (U) 2. This type of radiation can easily pass through a human. gamma ultraviolet
asked by Mary 
Right triangle
Determine whether this is a right triangle vertices: G(1, 1) H(5, 0) and J(3, 8) Should I use distance formula to find the sides and use Pythagorean theorem to prove it? Or is there another method? Thanks.
asked by Jen 
Humanities
Please help me to create a priority list for the heart transplant for the following four potential organ recipients and explain your decision 1. A 72 year old woman, whose family depend on her help 2. A 32 year old man, who is currently in prison for
asked by Amina 
social studies
where can i find a picture of t.j marshall a african american
asked by carmen 
Trig(continued)
2)Find the solution of sin2 theta = cos theta if 0 < theta < 180 A)30 degrees and 90 degrees B)30 degrees and 150 degrees C)30 degrees, 90 degrees, 150 degrees D)0 degrees, 90 degrees, and 150 degrees sin2 theta = cos theta sin2 theta  1 = 0 (sin theta +
asked by Jon 
Business
Consider a local business whose services you frequently use. What are the main components of this company's business model?
asked by greatdanelola 
algebra
Suppose you want to add a sprinkler system, and the location of one section of the sprinkler line can be described by the equation .
asked by frustrated