Questions Asked on
June 3, 2011

Physics!
The two stars in a certain binary star system move in circular orbits. The first star, Alpha, has an orbital speed of 36 km/s. The second star, Beta, has an orbital speed of 12 km/s. The orbital period is 137 d. a) What is the mass of the star alpha? b)
asked by Allison 
statistics
It is claimed that an automobile is driven on the average more than 20,000 kilometers per year. Random sample of 10 automobile owners are asked to keep a record of the kilometers they travel. If the sample mean and standard deviation of automobile driven
asked by Ali 
TRIGO
Find the minimum value of 9Tan^2x + 4Cot^2x.
asked by anandi 
math
You receive an invoice for $565.00 with terms 3/10, net 30. If you pay it immediately, how much will you pay? A. $548.05 B. $551.25 C. $558.05 D. $559.95
asked by K 
peresonal finance
how does education plays a critical role in financial success
asked by brittany 
Physics  pulley
A construction crew pulls up an 87.5kg load using a rope thrown over a pulley and pulled by an electric motor. They lift the load 15.5 m and it arrives with a speed of 15.6 m/s having started from rest. Assume that acceleration was not constant. I have
asked by Casey 
maths
a trapezium with its parallel sides in the ratio16:5,is cut from a rectangle whose sides measure 63m &5m respectively. the area of the trapezium is 4/15 of the rectangle .find the lengths of the parallel sides of the trapezium.
asked by YASH 
Physics
In the radioactive formula, 235 U → 235 Np = X, what does X represent 92 93 A. An alpha Particle B. A positron C. An electron D. A gamma ray Please help ASAP!!! Thank you very much!!
asked by J. J. 
Physics
Please help I've attempted this problem various ways and I can't seem to get the correct answer. A 69.0 kg person throws a 0.0410 kg snowball forward with a ground speed of 35.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both
asked by Kristen 
Composition
Can you please check this for any grammatical errors? Thank you for your help. Having been out of school for 15 years, I seem to have forgotten the fundamentals of grammar. Taking Composition and Communication 155 has helped me gain a better understanding
asked by Tori 
Chemistry
Redox reaction of cl2 > cl ion and clo2 I split it up into two half reactions cl2>2cl and cl2>2clo2
asked by Amy 
Math
What are the steps to getting the tan of 345degree, without the use of a calculator?
asked by Juan 
chemistry
a sample of a radioisotope had a mass of 100.0 grams. After exactly 24 days, 6.25 grams remained. The half life of the isotope is _________
asked by rick 
Physics
Find the final velocity of the two balls if the ball with velocity v2i = 19.5 cm/s has a mass equal to half that of the ball with initial velocity v1i = +26.8 cm/s. PLEASE HELP IVE TRIED EVERYTHING!!!
asked by Kristen 
statistics
A certain geneticist is interested in the proportion of males and females in the population that have a certain minor blood disorder. In a random sample of 1500 males, 75 are found to have disorder, whereas 80 of 2000 females appear to have disorder. Find
asked by Ali 
statistics
Among the 500 first year students of college, 270 students study computer science, 345 students study mathematics, and 175 students study both computer science and mathematics. If one student is selected at random, find the probability that he did not take
asked by masaad 
acc 121
Bob is investing in a partnership with Andy. Bob contributes as part of his initial investment, Accounts Receivable of $80,000; an Allowance for Doubtful Accounts of $12,000; and $8,000 cash. The entry that the partnership makes to record Bob's initial
asked by moe 
Psy
you see with your brain not with your eyes Defend this statement with reference to the YoungHelmholtz theory of color vision and the optic disc
asked by Tia 
Physics
Please help I've attempted this problem various ways and I can't seem to get the correct answer. A 69.0 kg person throws a 0.0410 kg snowball forward with a ground speed of 35.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both
asked by Kristen 
Geometry
A 10meter ladder, is resting against the top of a building. If the bottom of the ladder is 4 meters from the building, how many meters tall is the building
asked by Terrence 
statistics
5. The table below shows Psychology exam scores, Statistics Exam scores, and IQ scores for a random sample of students. What can you observe in the relationship between IQ and psychology, psychology and statistics, and IQ and statistics? Using a
asked by neil 
Algebra
The average of two test scores is 79. If one test score is eleven less than the other, what are the two test scores?
asked by Steve 
English
Can you please check these sentences for me, please? Thank you very much. 1) The word Victorian derives from Queen Victoria, who ruled constitutionally for more than half a century, from 1837 to 1901. 2) The Victoria Age was a complex area characterized,
asked by Henry1 
Physics
What daughter isotopes are produced when a neutron combines with a nucleus of 235/92 U? Assume that three neutrons are also produced in the reaction. A. 140/56 Ba, 95/36 Kr B. 142/56 Ba, 93/36 Kr C. 140/56 Ba, 93/36 Kr D. 141/56 Ba, 94/36 Kr Please help.
asked by Anonymous 
Statistics
Under what circumstances does the sampling distribution of the proportion approximately follow the normal distribution?
asked by Dan 
chemistry
When performing a titration, 23.65 mL of 1.25 M calcium carbonste was used to neutralize 9.68 mL of HCl. What is the concentration of the HCl solution? (Create a balanced equation first)
asked by lexi 
busness math
two vendors are competing for your busness.vendor A is offering you a 6/8/12 discount and vendor B is offering a discount of 7/9/10.what is the single equivalent discount being offered by each vendor(round to the nearest hundredth percent)
asked by Ron 
bio 151
Describe where EPSP is produced, and explain how it is produced. What is its significance?
asked by Tia 
business communication
You can't qualify for a Home Beautiful credit card until you are 18 years old." Indicate the alternative that both correctly evaluates the sentence and correctly explains the reason for the evaluation. (Points: 5) Good youattitude because it begins with
asked by Anonymous 
Math
The segment that bisects an angle of the triangle and has one endpoint at a vertex of the triangle and the other endpoint at another point on the triangle is called the _________. The segment that has one endpoint at one of the vertices of a triangle and
asked by Sabrina 
accounting
Required a. Determine the gross profit margin for each product produced based on the ABC data [(selling price 2 ABC cost per foot) 3 feet produced]. b. Determine the gross profit margin for each product produced based on the traditional costing data
asked by Maria 
Trigonometry
Find all solutions on the interval (0,2pi): 22cos^2=sinx+1
asked by Help needed! 
arithmetic
If a:b:c=2:1:3 and 2a3b+c=8 then a+b+c is
asked by Anonymous 
statistics
A population of scores forms a normal distribution with a mean of µ = 40 and a standard deviation of SD = 12. a. What is the probability of randomly selecting a score less than X = 34?
asked by Anonymous 
English
Can you check this sentence, it's really urgent. Before sending you details of my credit card, I would like you to confirm the offer made to me by Mr Smith, your Reservation Executive.
asked by Henry1 
first aid
Two thin rectangular sheets (0.09 m 0.54 m) are identical. In the first sheet the axis of rotation lies along the 0.09m side, and in the second it lies along the 0.54m side. The same torque is applied to each sheet. The first sheet, starting from rest,
asked by Anonymous 
Algebra
Can someone check my answers? 1. 3/c  4/3c = 5/3c 2. 3t/t4  2t+4/4t = 2t4/t4 3. z/3z^2 + 4/7z = 19/21z 4. 5x/2x6 + x+2/3x = 4x2/2x6 or 2(2x1)/2(x3)
asked by Michelle 
college algebra
How would you factor th trinomial 42h^229hj5j^2
asked by Tiara 
English
In the book To Kill A Mockingbird, What is the most important life lesson that Jem and/or Scout learn?
asked by TKAM 
Physics
In the radioactive formula 235 U → 235 Np + X, what does X represent 92 93 A. An Alpha Particle B. A positron C. An electron D. A gamma ray Please help ASAP!!! Thank you :D
asked by J. J. 
math
what % of $720.00 equals $157.00
asked by Anonymous 
maths
what does 4.8828125 round to?
asked by tess 
math
a 31'' diameter circle has an area of _ sq ft. ???
asked by jay 
math
a 31'' diameter circle has an are of _ sq ft.????
asked by jay 
algebra
express as an equivalant expression that is a single logarithmic and simplfy if poissible loga(2x+10)loga(x^225)
asked by mema 
Algebra
The speed of a passenger train is 20 mph faster than the speed of a freight train. The passenger train travels 250 miles in the same time it takes the freight train to travel 150 miles. find the speed of each train.
asked by Francessca 
maths year 7
can u give me some help on recipicol fractions?
asked by who wants 2 no? 
Math  Domain of Composite function
Find the domain of the composite function f ₒ g . Please show all of your work. f(x) = √x; g(x) = 2x + 12
asked by CheezyReezy 
Chemistry
The ksp of aluminum hydroxide is 5.6e17. What is the concentration of hydroxide in a saturated solution?
asked by Kat 
business communication
What are three examples of bias in business writing? Identify two methods you consider important to follow in reducing bias in business writing
asked by Anonymous 
business
As the new finacial controller of a meduimsized manufacturing company, you quickly need to assess the company's finanical position. Explain the process you would work through and the documents you would review. also state which of you new colleagues you
asked by Antonio 
Chemistry
2 L(g) + An(aq) + 3 Gw(s) + 2 I(g) 2 Gd(aq) + 3 A(g) + Y(s) What direction would the reaction shift if the volume of the container was increased? left or right? What direction would the direction shift if some additional water was added? left or right? and
asked by Kat 
algebra
prove (a^2b^2)^3+(b^2c^2)^3+(c^2a^2)^3=3(a^2b^2)(b^2c^2)(c^2a^2)
asked by pavatharani 
Physics
A construction crew pulls up an 87.5 kg load using a rope thrown over a pulley and pulled by an electric motor. They lift the load 15.5 m and it arrives with a speed of 15.6 m.s having started from rest. Assume that acceleration was not constant. How much
asked by Casey 
runways
IF THE LENGTH OF THE RUNWAY IS 6 INCHES, WHAT IS THE PERIMETER?
asked by daniel 
Physics
A mass is hanging on the end of a spring and oscillating up and down. There are three forces acting on the mass, the force of the spring, the force of gravity, and the force of air resistance. Which of these forces can be associated with potential energy
asked by Ramsey 
geometry B
x square root of 2= 36 round to the nearest tenth or whole number
asked by sarai 
statistics
A sample of 25 men has a mean weight of 65kg with standard deviation of 8kg. Suppose that the weight of men follows normal distribution with a standard deviation of 10kg. Find a 95% confidence interval for the population mean μ.
asked by Ali 
u.s history
in what movement does participate james weldon johnson and zora neale
asked by lala 
Social Studies KKK
How did the federal government help to reduce the klans's influence in the south?
asked by Courtney 
Physics
Imagine that your car is powered by a fusion engine in which the following reaction occurs. 3*deuterium>helium + hydrogen + neutron The masses are (2.0141 u), (4.0026 u), (1.0078 u) and (1.0087 u). The engine uses 8.1 106 kg of deuterium fuel. If one
asked by Jen 
biography
Hi, im susan. I am currently in english honors and have to do a biography on someone i admire. The person i admire most right now is jeffree star. I have never really wrote a biography on someone. And could use some help. I don't know what to include about
asked by sue 
school fee Question
on my school fee sheet it says i must pay 90.00.. but i don't know what the student activity fee is for, it's 10.00. Can you pleese tell me what the student activity fee is for?
asked by Marrie 
math/mathmate please answer or someone smart!!
can you explain pie to me i'm in y7 and want to get ahead!
asked by who wants 2 no? 
algebra
rewrite as an equivalent loganthmic e^2=0.1353
asked by mema 
Community Nursing
I need helpl in determining how to complete this paper Neighborhood hospital ED sees critical capacities by By: G. Johnson
asked by Taylor 
us history
I need to do a thesis on a latepresent American history about anything. I can't think of something that will be easy and easily researched. Any ideas?
asked by Vivi 
Algebra
Use the five steps for problem solving to answer the following question. Please show all of your work. Marissa has budgeted $65 for her monthly cell phone expense. If her plan with her wireless provider is $15 plus $0.25 for each minute, how many minutes
asked by Steve 
physics
A bubble of gas, diameter 2 mm, is trapped in a container of liquid at normal atmospheric pressure (1 × 10^5 Pa) and a temperature of 25 °C. The container is opened on board an aircraft where the temperature is 22 °C and the surrounding pressure is
asked by meme 
life orientation
in 1015 line critically discuse 5 ways in which the human or environmental problem impact on the community.provide relevant sources to support claims
asked by raymond 
science
can you live off of 10.5 ml of water
asked by Anonymous 
Chemistry
What happens to the rate of a reaction if the temperature is decreased and why?
asked by Kat 
chemistry
222g of oxygen contains how many moles?
asked by mason 
science
what problems are acid precipition associated with
asked by kenya 
BIO
what structures of the inner ear are activated by a somersault? A cartwheel? By fast acceleration in a race car?
asked by Tee 
algebra
A home's backyard drops 9 ft over a horizontal distance of 124 feet. Find the slope of this back yard. Round your answer to two demical places
asked by lori 
English
Can you please check these few sentences, please? Thank you. 1) I just wanted to know why two meals are not included in your rate and how much your hotel charges for a dinner. 2) Would you please be so kind and send me the details of your offer again?
asked by Henry1 
logic
Catherine goes to her local movie theater only to see romantic comedies. Since Catherine did not go to the movies yesterday, there is not a romantic comedy playing at her local theater.
asked by kim 
algebra 1
which expression is equal to 6(9+2)?
asked by sonia 
statistics
A certain defect (D) is present in about 1 out of 1000 cars during production [P(D)=0.001], and a program of testing is to be carried out using a detection device which gives a positive reading with probability 0.99 for a defective car [P(+/D)=0.99] and
asked by masaad 
Media & american culture
I need help with a thesis sentence about music stating how & why it is more than an important piece of entertainment
asked by Kellie 
statistics
If 50% of the automobiles sold by an agency for a certain car are equipped with diesel engines, let X represent the number of diesel models among the next 5 cars sold by this agency, write the probability distribution of X.
asked by Ali 
Physics
An object of mass m travels halfway around a circle at a constant speed v. The magnitude of the total work done on the object by the net force acting on it (not counting starting and stopping at the beginning and end of the path) is a. equal to mv b. equal
asked by Ramsey 
Physics HELP!!
What daughter isotopes are produced when a neutron combines with a nucleus of 235/92 U? Assume that three neutrons are also produced in the reaction. A. 140/56 Ba, 95/36 Kr B. 142/56 Ba, 93/36 Kr C. 140/56 Ba, 93/36 Kr D. 141/56 Ba, 94/36 Kr Please help.
asked by Anonymous 
busiess communication
. In which of the following situations would using the word "you" typically NOT be appropriate? (Points: 5) When you must inform a subordinate that she has inadvertently made a costly error When you must inform a subordinate that you have passed her idea
asked by Anonymous 
math
is 395 divisible by 3 and 5
asked by Anonymous 
science
if i push a marble with 1 whatever you measure force with! How fast will it go and how far? year 7 correction of last Q
asked by who wants 2 no? 
medical terminology
define midsagittal
asked by tray 
maths
1/2 of 156.25g!
asked by tess 
maths
how much of a Newton would u flick a marble with?!
asked by who wants 2 no? 
science but not really!?
how heavey is a marble (in grams)?please answer quick!!
asked by who wants 2 no? 
math
the volume of a container that is 8'' long , 4 '' deep, and 3'' high is _ cu in. ???
asked by jay 
ms sue please answer quick! science (sort of)
how much of a Newton would you flick a marble with?!
asked by who wants 2 no? 
science/maths?
how much force is needed to accelerate a golfball and basketball at the same speed for one metre? please help needed soon!!!
asked by who wants 2 no? 
pope john paul 2
can you tell me the background information on the pope jogn paul 2 of inspiration's life. And how this person has influenced our faith or inspired us to be a better person pleaseeee helppppp
asked by kim 
chemistry
A lab technician determines the boiling point elevation of an aqueous solution of a nonvolatile, nonelectrolyte to be 1.62°C. What is the solution's molality?
asked by kellyb 
geometry
Point P has coordinates of (11,2) and the circle C has the equation of (x1)squared + (y2)squared = 36. How do I caculate Point A?
asked by Jane