Questions Asked on
August 2, 2011

math
One pump can empty a pool in 5 days, whereas a second pump can empty the pool in 7 days. How long will it take the two pumps, working together, to empty the pool?
asked by Lisa 
Physics Help NOW!
A 64 kg woman stands on a very light, rigid board that rests on a bathroom scale at each end. She is 1.5m in on the 2m board. What is the reading on each of the scales in kg? Homework is almost due and I cant figure this out!!!!
asked by collegechick 
Physics
A baseball is hit with a speed of 27.0 m/s at an angle of 42.0 deg. It lands on the flat roof of a 10.0 mtall nearby building. If the ball was hit when it was 1.0 m above the ground, what horizontal distance does it travel before it lands on the building?
asked by Kyle 
statistics
Consider a binomial experiment with 20 trials and probability 0.45 on a single trial. Use the normal distribution to find the probability of exactly 10 successes. Round your answer to the thousandths place.
asked by lee 
Need help now Please!
A 64 kg woman stands on a very light, rigid board that rests on a bathroom scale at each end. She is 1.5m in on the 2m board. What is the reading on each of the scales in kg? Homework is almost due and I cant figure this out!!!!
asked by Helppp 
statistics
In a preliminary study, the sample standard deviation for the duration of a particular back pain suffered by patients was 18.0 months. How large a random sample is needed to construct a 90% confidence interval so that an estimate can be made within 2
asked by joe 
physics
A ceiling fan has four blades, each with a mass of 0.40 kg and a length of 65 cm. Model each blade as a rod connected to the fan axle at one end. When the fan is turned on, it takes 4.45 s for the fan to reach its final angular speed of 2.3 rev/s. What
asked by Ashley 
Math
A team has been working to convert dieselpowered cars to run just as efficiently on used cooking oil! They want to compare the mileage and speed of their prototype with that of the dieselpowered car. The prototype is 100 meters south of an intersection,
asked by Anonymous 
physics
WHEN TWO BODIES A AND B INTERACT WITH EACH OTHER,A EXERTS a FORCE OF 10 N ON B,TOWARDS EAST.WHAT IS THE FORCE EXERTED BY B ON A?
asked by AMAN 
math
A pile of 108 identical books has a mass of 30 kg. Find (a)the mass of 150 books and (b)the number of books that has a mass of 20 kg.
asked by Sally 
algebra
the diagonal of a rectangular room is 13ft long. one wall measures 7ft longer than the adjacent wall. what are the dimensions of the room
asked by amanda 
accounting
On January 1, 2006, Powell Company purchased a building and machinery that have the following useful lives, salvage value, and costs. Building, 25year estimated useful life, $4,000,000 cost, $400,000 salvage value Machinery, 10year estimated useful life,
asked by Anonymous 
Math
If you deposit $900 semiannually in a bank which pays 6% interest compounded semiannually and make no more deposits after 7 years, what is the balance in the account 8 yrs. later from the last deposit?
asked by Diane 
Science
Hydrochloric acid and sodium hydroxide are mixed together to form salt and water. During the reaction, the temperature of the solution increases. Which of these best explains why this is considered to be a chemical change? No energy was destroyed. Heat was
asked by Anonymous 
Physics
You set out to design a car that uses the energy stored in a flywheel consisting of a uniform 103kg cylinder of radius R that has a maximum angular speed of 450 rev/s. The flywheel must deliver an average of 1.70 MJ of energy for each kilometer of
asked by Alex 
chemistry
a compound x has a solubility of 79g/100 g h20. when 24 g of x are added to 68 g of water the resulting mixture is homogeneous or heterogenous
asked by laura 
Human Services Administration
Evaluate each mission statement based on the following: • Beliefs • Mission • Vision • Culture • Goals • Products Show how each one of the mission statements does or does not meet the requirements of a good mission statement. I am not quite
asked by Crystian 
English
I have to write a speech on a pet peeve. I chose aggressive driving. Here is my introduction for the outline. Think? Aggressive Driving Introduction •How many of you have turned on the news or opened a newspaper to find that another human being was
asked by lizzie 
english
Can you please tell me if the sentence in quotation marks is the topic sentence? I read paragraph one and paragraph three, I believe that paragraph one was a very effective paragraph. "It touches a few very interesting points about why someone should
asked by Denise 
math
River Current A boat can travel 36 miles upstream in the same time that it can travel 54 miles downstream. If the speed of the current is 3 miles per hour, find the speed of the boat without a current.
asked by Adam 
intermediate algebra
Express in terms of i. 2 divided by sqrt.,36
asked by ROCKY 
verbs
kris enjoys action movies at the theatre
asked by jose 
statistics
Would it be unusual for the mean of a sample of 3 to be 115 or more?
asked by john 
english
Hawaii is one of the most beatiful places on earht. what are the verbs in the sentence
asked by lily 
statistics
In a study of the relationship between selfconcept and achievement, a correlation of 0.75 was found. this indicates that the relationship between these two variables is: a) weak and positive b) strong and postitive c) weak and negative Thank You!
asked by Anonymous 
Marketing
Which of the following is a DEMOGRAPHIC segmenting dimension?
asked by Anonymous 
statistics
What would you guess the value of the correlation coefficient to be for the pair of variables: "number of manhours worked" and "number of units of work completed"? a) approximately 0.9 b) approximately 0.4 c) approximately 0.0 d) approximately 0.4 e)
asked by Anonymous 
math
Which number is equivalent to 7 1/3 ?
asked by drea 
physics
a ball falls from a height of 10metre. on rebounding it loses 30% energy. upto what height does the ball go?
asked by gurpal 
math\
What is thirty−six percent of fifty?
asked by drea 
physics
An aluminum rod at 18 degrees Celsius has a length of 2.50 meters. At what possible temperatures will it's length change by 1cm?.
asked by help 
intermediate algebra
Rowing. Abby rows 10km. upstream and 10km. back in a total time of three hours. The speed of the river is 5km./h. Find Abby's speed in still water.
asked by ROCKY 
Statistics
Please I Need Help With This Question Showing All Steps...Thank You :) The average number of units that the factory workers at Benzo company assemble per week is μ = 45 with a standard deviation of σ = 12. Assume that the distribution of units assembled
asked by Anonymous 
Precalc
Hello I need help with this question. I know that the formula for angular velocity is w= theta/time. I also know that the answer is 750 rpm. I am just not sure how to get that answer A truck driver travels at 58 miles per hour. The truck tires have a
asked by Anna 
statistics
The director of an innercity hospital believes that the average cost per gunshot injury of patients admitted to the hospital’s emergency room is $18,000. A random sample of 9 gunshot injuries had a mean of $17,213 with a standard deviation of $572.
asked by Anonymous 
physics
The circuit shown in the figure encloses an area of 25 cm2. The magnetic field increases steadily from 0 T to 0.50 T in 0.2 ms. What is the current in the resistor during this time? The circuit has a 9.0 v battery and a 20 ohm resistor
asked by Elizabeth 
Maths
how would you write the following expressions using numbers, parentheses and other mathematical symbols. 1. Double the sum of twentyfive and eight. 2. The quotient of fifteen and three subtracted from the product of four and nine. 3.The difference between
asked by Anonymous 
Geography
Following the breakup of the Soviet Union, what are some of the major problems faced by many of the new countries? Many of the new countries didn't know how to become democratic. The people weren't used to having a choice, voting, or political parties.
asked by Chandler 
English
What is the tone of Tess of the D'urbevilles?
asked by Max 
Statistics
Verifying Requrements and finding the margin of error Credit rating FICO credit rating scores of a smiple random sample of applicants for credit cards 95% confidence =50,x=677 and is knownd to be 68
asked by Leticia 
world civ
Can you help me? Compare and contrast the empires of the Americas with those that emerged in Africa between 500 and 1500 AD. Discuss the roles played by geography, religion, trade, and politics developments in shaping societies in these regions.
asked by Emily 
english
What is the topic sentence in the following paragraph? I believe that paragraph one was a very effective paragraph. It touches a few very interesting points about why someone should create a Living Will. This is especially important to me because of the
asked by .... 
Biochemistry
calculate Ph occuring when 100ml of 0.10m acid is added to 500ml of 0.08m acetate buffer,pka 4.75,ph 4.5
asked by Pearl 
chemistry
Calculate the ph for ch3co2h,3% dissociated at a concentration of 0.02 mol dm3.
asked by kirsten 
Math
Global Telephone charges 30 dollars for monthly phone service, plus a long distance calling rate of 15 cents per minute. After an hour of long distance calling charges,the rate drops to just 5 cents per minute for additional long distance calls. What will
asked by Kris 
chemistry
if the k ion in the blood is 195 mg/ml then what is the molarity of blood
asked by disha 
Geometry
One hundred tiles of a certain size are needed to pave a floor. If a tile, which measures 4 cm less on each side, will be used, 225 tiles will be needed. Find the size of the larger tile.
asked by Ivyl 
statistics
Consider the average available for all hotel rooms from the previous assignment. Identify the point estimate of the average number of available hotel rooms in this lesson from each sample. Construct and Interpret a 95% confidence level for the true mean
asked by tom 
bio
what is the structure of DNA?
asked by amy 
physics
A tennis ball of mass 0.057 kg is served. It strikes the ground with a velocity of 54 m/s (120 mph) at an angle of 21° below the horizontal. Just after the bounce it is moving at 51 m/s at an angle of 19° above the horizontal. If the interaction with the
asked by Ashley 
Science
Over a oneweek period, there is a rapid increase in the number of patients entering the emergency room complaining of high fever, lethargy, muscle aches and diarrhea or vomiting. Which method of scientific inquiry would the doctors use to determine the
asked by dannytan2 
physical science
nitrogen and hydrogen react to form ammonia as follows N2(g)+3H2(g) 2NH3(g)
asked by Anonymous 
Statistics/probability/maths
Please I Need Help With This Question Showing All Steps...Thank You :) The average number of units that the factory workers at Benzo company assemble per week is μ = 45 with a standard deviation of σ = 12. Assume that the distribution of units assembled
asked by evangeline johnny 
statistics
ttest for independent means: n=8 t=1.33 df= 8 C.V. = plus or minus 2.306 My question is how do you get 2.306 for the cv???
asked by Hannah 
intermediate algebra
Given the quadraticf(x)=x^214x+49, find a value of x such thatf(x)=36
asked by ROCKY 
Physics
A 850 kg car skidding on an icy highway at 32.5 km/h slides onto some bare pavement. If the coefficient of friction between the tires and the bare pavement is 0.200, what time(s) does it take for the car to stop? HOW do i get the answer!!!!
asked by Brina 
COM/155 UNIVERSITY COMPOSITION AND COMMUNICATION I
Write six original sentences in which pronouns are used in a consistent manner. What strategies might a writer use to ensure pronouns are used effectively?
asked by Camille 
geology
How do oceans regulate climate?
asked by Sandra 
AN UNCERTAIN HORIZON
Which of the following statements is true of the Gulf of Tonkin affair?
asked by Anonymous 
algebra
3x+4y=12 how to find the slope and yintercept
asked by alvin 
statistics
A group of students who are female is greater than 0.5. a sample of 120 students reveals that 76 are females. use the 5% leave of significance to test this claim.
asked by Riyaz 
calculus
Calculus A, Evaluate the following integral : ç (x^2+3x2)dx
asked by Iman 
Algebra
I am stumped by these two LCM questions for some reason. Find The LCM for #1 2(R7) and 14(R7) #2 (1+4r), (116r^2), and (14r) It seems like #1 is already at the LCM and #2 would be (1+4r)(14r) Am I even vaguely correct? Thanks for your help.
asked by Aria 
Middle Childhood Psychology
Definition Gender schema helps the children make sense of their world. A schema for a boy would be “boys play with trucks and are engineers.” A schema for a girl would be girls play with dolls and cannot be scientists.” As children interact with
asked by Sharon 
chemistry
statement that is wrong about transition elements is 1) they have fixed oxidation states 2) they show paramagnetic behavior 3) they form interstitial compounds 4) they form complexes
asked by marjani 
physics
Damon, thanks for your answer. Consider that the 20lb object is being pulled behind a bid rig truck traveling at 90mph, can it then be calculated as to what amount of horsepower, is being provided to move (in our case) a 20lb object, traveling at 90mph. If
asked by david 
Maths
Find the gradient of the line joining the points (5,2) and (6,3)
asked by Jennifer 
VA ENTILEMENT
WILL THEY CHANGE?
asked by JERRY 
math
Find the quotient: fourninths divided by eight.
asked by Anonymous 
hum
One of the key controversies in psychology is nature versus nurture. Is this a problem or an issue?
asked by Anonymous 
Calculus
Hi! I am having trouble figuring out the derivative of ln[sin^2(x)+3]........... If it weren't for the "3" I know I could just "move" the exponent of 2 from sin^2 to in front of the ln,....but because of the 3 I can't do this....So what should I do? Thank
asked by KIKI 
Math
An athlete runs 12 laps on a 400m running track every day for 2 weeks. How many kilometers does she run in total?
asked by Bella 
statistics
The following data is the result of a random sample of the ages (in years) of 12 houses in a community: 18, 22, 23, 19, 18, 24, 26, 17, 12, 27, 28. Construct a 90% confidence interval for the mean age of a house in this community.
asked by Anonymous 
Medical Terminology
Need help identifying 15 medical terms that would be unfamiliar to nonmedical persons. Also providing singular and plural forms of selected medical terms. This is a 47yearold male who was in his usual state of health until early this evening when he
asked by Rachel 
physics
X horsepower is equal an 20lb. Object traveling at 90mph. Is it possible to solve for X? and if so, what does X equal?
asked by david 
com155
If I could get some help on the adverbs and adjectives in the following paragraph I wrote. I personally did not have any credit cards for a very long time. In the past I have had more then I needed and found them to just cause me problems. I was young and
asked by writing 
RETIRED MIL.PAY
WILL IT CHANGE?
asked by JERRY 
math
Gary has a length of string for making a yoyo that is fiftyseven and onehalf inches long. He wants to cut that in half to get the proper length. Which expression can be used to find the length of each piece of string?
asked by Anonymous 
ENGLISH
IS THIS THE CORRECT PUNCTUATION? IT RAINED EVERYDAY ON OUR VACATION;NEVERTHELESS WE HAD A WONDERFUL DAY.
asked by SHON 
world history
During the fourteenth century, Japanese women of aristocratic rank
asked by katie 
algebra
Write an equation of the line containing the specified point and parallel to the indicated line.(1,4)3x+y=5
asked by smith 
intermediate algebra
use polynomial long division to divide 25x^3+40x^2+25x+10 by 5x^23x2
asked by ROCKY 
intermediate algebra
Express in terms of i. 2sq.rt.divided by36
asked by ROCKY 
math
At a flea market, 5 out of twelve vendors are selling antiques. What is the decimal equivalent of 5/12
asked by anonymous 
physics
An apple of mass 0.1kg is thrown from a 123 meter high building at an angle of 45 degrees with an initial velocity of 5. How long does it take for the apple to hit the ground? (assume g = 9.8 m.s2)
asked by JJ 
math
Wildlife officials had to rescue and remove seven hundred thirty−five Florida panthers in the past twelve months. It is estimated that there are fifty thousand Florida panthers in existence. What percent of fifty thousand is seven hundred thirty−five?
asked by drea 
physics
A space probe of mass M is moving with uniform velocity v far from earth and from other massive bodies,and it is planned to deflect from its trajectory through an angle theta by firing from it a suitable mass at velocity v.Derive an expression for the
asked by victor2 
CIS 105
Explore one or more graphics programs available on your computer: Share your experience with the class. What did you like and dislike about the program
asked by Anonymous 
Statistics(Please help)
ttest for independent means: n=8 t=1.33 df= 8 C.V. = plus or minus 2.306 My question is how do you get 2.306 for the cv??? Why wouldnt the cv be 2.31?
asked by Hannah 
intermediate algebra
Subtract. (5x^6+9x^42x^33)(8x^68x^5+x^44)
asked by ROCKY 
statistic
the proportion of students who smoke is less that 0.35. a sample of 55 reveals that 20 smoke. use the 10% level of significance to test this claim.
asked by Riyaz2 
physics
If the aim is to let a 700 kg pump float on the surface of water, how many cylinders ( 50cm*90cm ) containing (( 2/3 from total volume / cylinder )) fresh water should we have ?
asked by khikha 
math
What decimal is equivalent to seven and 3 over two hundred fifty?
asked by drea 
Mathematics
If 1/3 of 2x is 5, what is 2/3 of 4x?
asked by Kay 
Cultural Antrhopology
How does the identification of cultural universals impact our understanding of what it means to be human?
asked by Victor 
math.
If x>0 and x=5y, then square root of x^22xy+y^2 is..
asked by John 
Chemistry
A gas at a temperature of 95 degrees C occupies a volume of 159 mL. Assuming constant pressure, determine the volume at 15 degrees C.
asked by Tina 
math
Meg has a piece of poster board that is two and twofifths feet wide. She needs to fold it into three equal sections. How wide will each section be?
asked by Anonymous 
Math
So let me know if I did this one right please!!!!! 8x+6=2x+9 8x2x+6=2x2x+9 6x+6=9 6x+66=96 6x=3 6/2= 3/6=1/2 x=1/2
asked by Pam 
econ
Suppose that two people, Michelle and James each live alone in an isolated region. They each have the same resources available, and they grow potatoes and raise chickens. If Michelle devotes all her resources to growing potatoes, she can raise 200 pounds
asked by Anonymous 
TQM(total quality management)
hi can anyone suggest some site that have quizzes on total quality management?i wanna pratice before our exam..thnaks
asked by ♥ roses 
English
What tools are in a "writing toolbox"?
asked by Rachel 
Communication
For the following, state the value of the discriminant and then describe the nature of the sloution. 3x^28x19=0
asked by Tim 
chemistry
an example of a transition element having completely filled dorbital is zn Ti v Cr
asked by marjani 
algebra
simplify 12~ 1/4 + 2/5  2^3
asked by Anonymous 
7th grade
What should I do to practice my math and reading before I start school so I can get my brain in gear and havesome time to know what i'm doing that is new.
asked by Anonymous 
bio
Describe a situation or experience in which you used (knowingly or not) the scientific method.
asked by Anonymous 
Geology
Did tilting of the Grand Canyon Super Group occur after deposition of the Tapeats Sandstone.
asked by Anonymous 
science
To an element x(at.no=70)y(at.no=120)is added,if the ratio of atoms should be 1:10E7,then how many gr of y is required to 100gr of x?
asked by Komali 
math
on his first exam, he studied for 10 hours and went to tell the mall for 4hours, and got a score of 85. how long should he study to get a grade of 96 and go to the mall for 17 hours? grade varies directly with studying and inversely with going to the mall.
asked by rock 
5th grade math
I need to name ten ways I can use number?
asked by kyle 
Maths
a pack of blank recordable CD's has a mass of 0.8kg. The packaging has a mass of 80g. what is the mass of one CD? Is it 17.6g
asked by Anonymous 
math
How do I solve 7x=3x+48
asked by Pam 
math
what is 14 inch circumfrence rope diametre equals to
asked by hanan 
Working With Decimals
Compare decimal notation to fractional notation. Which is easier to work with, in your opinion?
asked by Fiso 
ethics
managerial ethics in islam
asked by siraju 
maths
lim tan 5x/4x as x approaches to pi
asked by rohan 
Math
If 10=0.1 what does 28 equal?
asked by David 
Maths
Increase 500m2 by 25%
asked by Anonymous 
Algebra
10 4 ___ y= ___ they are fractions 13 3
asked by Cindy 
math
what is negative three point two as a mixed number in simplest form.
asked by drea 
math
how can you make this a non function.f(x){(1,8),(3,4),(5,0),(9,4),(10,2)
asked by tamika 
math
I am trying to simplify these ratios: $2 : 50c 1.2m : 80cm
asked by Bella 
Math
11x + 28 = 6x + 43
asked by Pam 
Math
8x + 6 = 2x + 9
asked by Pam 
math
4 2/3 divide by 1 1/6 =
asked by Anonymous