Monday

April 20, 2015

April 20, 2015

Total # Posts: 396

**Physics**

A tennis ball is struck and departs from the racket horizontally with a speed of 29.1 m/s. The ball hits the court at a horizontal distance of 19.0 from the racket. How far above the court is the tennis ball when it leaves the racket?
*September 15, 2013*

**Fluid Mechanics**

Water flows into a cylindrical tank through pipe 1 at a rate of 25 ft/s and leaves through pipe 2 at 10 ft/s and through pipe 3 at 12 ft/s. Pipe 4 is an open air vent. Internal diameters of the pipes are: D1=3 in, D2= 2 in, D3=2.5 in, D4=2 in. Calculate a) dh/dt and b) the ...
*September 10, 2013*

**Material science/ Mechanics**

A cube polymer matrix is subjected to elastic deformation in compression by 10 N applied force. The cube is deformed by 20% of its original shape. The cube side has a length of 1 m. If you assume that the polymer has the intrinsic properties of rubber, find the storage shear ...
*September 8, 2013*

**algebra**

Solve the formula for the variable given.then use the info to find the value of variable. S=πr(h+k) Find h if r=2,k=3,and S=50 I really don't know how to answer this kind of questions :(
*August 22, 2013*

**algebra **

Solve the formula for the variable given.Then use the given information to find the value of the variable. A=2πrw Find r if w=4ft And A=120ft square. Please someone help me with this!!!
*August 22, 2013*

**math**

caca
*August 13, 2013*

**Psychology Help Please**

When rethinking a problem why do people do a social comparison? What school of thought did client centered therapy come from? What is the biology of love based on? If a person sees the glass half full, what type of outlook do they have? Human sexuality is influenced by three ...
*June 6, 2013*

**math**

Logarithm 3^3x+1=3^5x-2 3^3x+1-3^5x-2=0 Log(3^3x+1-3^5x-2)=log0 Please explain to me why is the last step is wrong
*May 22, 2013*

**math**

How would I solve this: Mr. Merrill has 3 times as many nickels as dimes. The coins have a total of $1.50. How many of each coin does he have?
*April 20, 2013*

**Bio-Micro Help Please!!!**

1) why is it important from a clinical standpoint to perform a B-lactamase test? Explain! 2) if the B-lactamase test was positive, what might you do to determine a viable treatment option? 3) why might Augmentin (amoxicillin clavulanate) be prescribed for an individual that ...
*April 18, 2013*

**Algerba 1**

Thanks
*April 11, 2013*

**Algerba 1**

it needs to be written in scientific notation.
*April 11, 2013*

**Algerba 1**

Write in Scientific Notation 1. (3X10to the tenth) (7X10to the -4th) 2. (5X10to the 4th)to the second Thanks so much!
*April 11, 2013*

**math**

3xsquared + 27 = 5 3xsquared -5x = -3xsquared + 6 SOLVE
*April 9, 2013*

**math **

xsquared + 8x- 10 =1
*April 9, 2013*

**Math probability**

Assume that 60% of community college students are female. 1) if we pick 100 students at random justify why we can or cannot model this using a normal model. 2) find the probability that between 50 and 70 of the 100 students selected are female. 3) fidn Q1 and Q3 for the middle...
*April 8, 2013*

**Stat Help Please**

A linear model can be used to describe the relationship between fuel economy(mpg) and horsepower (hp) for certain automobile models. mpg=46.868-0.0838 hp R^2=75.5% 1) Give the symbol and the value of the correlation coefficient.
*March 12, 2013*

**Stat Help Please**

In what case is a control group receiving a placebo treatment not useful? what is the useful treatment for the control group?
*March 12, 2013*

**Microbiology**

I need help urgently please.
*March 11, 2013*

**Microbiology**

Calculate the # of phage present in the original sample. Report the dilution factor used and show calculation. 171*1000=171000 PFU/mL Is this a lytic or lysogenic phage? explain.
*March 11, 2013*

**Microbiology**

What are the original color of these agar plates? Eosine Methylene Blue Mannitol Salt Agar Phenylethyl Alcohol Agar Mueller Hinton Agar
*March 11, 2013*

**Stat Help Please**

1)A runner's finishing time translated into a z-score of z=2.6 Explain in words whether the runner performed excellently or poorly? 2)Yearly stock returns on India's Sensex Index are well described by a Normal model with a mean of 18.36% and a standard deviation of 14....
*March 10, 2013*

**Sociology**

Discuss the relationship among gender, ethnicity, and social class. How do sociologists see the connections and stratification among these areas in our society?
*March 6, 2013*

**Sociology**

Discuss the causes of social change.
*March 6, 2013*

**Math Helpppp**

The College Board, which are administered each year to many thousands of high school students, are scored so as to yield a mean of 550 and a standard deviation of 100. these scores are close to being normally distributed. what percentage of the scores can be expected to ...
*February 23, 2013*

**Calculus **

R(x)= sqr5/x^6 R'(x)
*February 21, 2013*

**Precalculus**

If (f º g)(3) = 7, then f(x) and g(x) could be: Select one: a. f(x) = 3x2 – 10x + 4, g(x) = x + 2 b. f(x) = 2x – 3, g(x) = x2 – 4 c. f(x) = 3x + 1, g(x) = x – 3 d. f(x) = x2, g(x) = x – 2
*February 10, 2013*

**Psychology Help Please!!!**

Thank you so much!
*February 1, 2013*

**Psychology Help Please!!!**

1)Activities such as cooing, thumb sucking, eating bring satisfaction. 2)Child response to some parental demands for such as bowel and bladder. 3)Child experiences the Oedipus complex. 4)Development continues, but sexual urges are relatively quiet. 5)Child shakes off old ...
*February 1, 2013*

**posibility**

Three men and three women are waiting to be interviewed for jobs. If they are all selected in random order find the probability of each event. No man will be interviewed until at least two women have been interviewed.
*November 16, 2012*

**math**

Three men and three women are waiting to be interviewed for jobs. If they are all selected in random order find the probability of each event. No man will be interviewed until at least two women have been interviewed.
*November 16, 2012*

**social studies**

rain shower
*November 16, 2012*

**Math**

An 8 meters bamboo pole is leaning against a coconut tree. The foot of the pole is 3 meters from the base of the tree. What angle does the pole make with the tree if the pole reaches up to the top of the tree? HELP PLEASE!
*October 15, 2012*

**math**

3/7
*October 10, 2012*

**History**

the indians felt like poop
*October 10, 2012*

**chemistry**

do not know firgue it out im in the 6th grade
*October 10, 2012*

**6th grade science**

who invented the telescope
*October 9, 2012*

**assessing development cognitive language observat**

keep letting him practice them
*September 28, 2012*

**math**

Alottery has 100 tickerts which are placed in a barrel . Three tickets are drawn at random from the barrel to decide 3 prizes . If john has 3 tickets in the lottery , determine his probability of winning : A.first prize. B.first and second prize. C.all 3 prizes. D.none of the ...
*September 24, 2012*

**Calculus Help**

It's x squared. lim (ax^2+b)/(cx+d) x-->infinity
*September 18, 2012*

**Calculus Help**

Assuming a,b,c and d are positive constants use algebra to find lim (ax^+b)/(cx+d) x-->infinity
*September 18, 2012*

**chemistry please help i cant figure this out**

What is the total mmHg pressure in of a gas mixture containing argon gas at 0.25atm , helium gas at 385mmHg , and nitrogen gas at 345torr. ? sorry i didnt relize i left them out.
*September 6, 2012*

**chemistry please help**

thank you
*September 6, 2012*

**chemistry please help**

What is the total mmHg pressure in of a gas mixture containing argon gas at 0.25atm , helium gas at 385mmHg , and nitrogen gas at 345torr. ? sorry i didnt relize i left them out.
*September 6, 2012*

**chemistry please help **

What is the total pressure in of a gas mixture containing argon gas at 0.25 , helium gas at 385 , and nitrogen gas at 345
*September 6, 2012*

**chem.**

What is the total pressure in of a gas mixture containing argon gas at 0.25 , helium gas at 385 , and nitrogen gas at 345 .
*September 6, 2012*

**math**

The National Center for Education surveyed 4400 college graduates about the lengths of time required to earn their bachelor's degrees. THe sample mean is 5.15 years, and assume that the population standard deviation is known to be 1.68 years. Based on gthe sample data, ...
*July 29, 2012*

**Algebra**

Tanisha is saving money to visit her cousin who lives in Mexico City. The table shows her the number of months since she started saving and the total in her savings account at the end of that month. a. Write an equation to model her savings. b. Tanisha estimates that the trip ...
*April 26, 2012*

**Math**

3 divided by 4 dollars and 65 cents hello
*April 26, 2012*

**pre-calculus help:((((((((**

how do u find period, all angles and name 8 angles for these???????? 1)cosxcos2x+sinxsin2x=sqrt(2)/2 2)5cosxsinx+2cosx=0
*April 23, 2012*

**Chemistry Help**

Nope the question is exactly like this!!!
*April 6, 2012*

**Chemistry Help**

100 ml of 0.2 M ammonium sulfate are reacted with 300 ml of 0.1M cadmium chloride . a yellow precipitate is formed. what is the weight of the precipitate produced.
*April 6, 2012*

**Algebra**

Josh and Racquel sold cookies and brownies at the math club bake sale. The cookies cost $0.47 each, and the brownies cost $0.60 each. They sold a total of 603 items (cookies and brownies) and raised $323.84 Write a system of equations and determine the number of cookies sold ...
*March 25, 2012*

**Algebra**

A movie theater manager wants to know how many adults and how many children pay admission to a particular movie. The theater charges $10.00 for adult tickets and $5.00 for child tickets. At a showing where 210 tickets were sold the theater collected $1,355.00. Write a system ...
*March 25, 2012*

**Algebra**

Solve the system of equations by substitution. Your answer should be given as an ordered pair like this (x, y). Round your answers to the nearest tenth. y=-2+7x 10x-7y=209
*March 25, 2012*

**physics**

The relative humidity is 55% on a day when the temperature is 30.0°C. Using the graph below, determine the number of moles of water vapor per cubic meter of air
*March 4, 2012*

**Algebra 2**

What is each product or quotient in simplest form? a) √3(4√3) b)√x^3/3√x^2 c)√7(3√7)
*February 29, 2012*

**Math**

4x-3y=33 x=-4y-25 Please help me solve this system of equation and show your work thanks.
*February 27, 2012*

**Math**

4x-3y=33 x=-4y-25 Please help me solve this system of equation and show your work thanks.
*February 27, 2012*

**math**

How to solve a linear equation using the equality properties. Help explain in simple language
*February 21, 2012*

**Algebra**

A car travels West for 79 miles before turning at an angle of 22° North of East. The car continues on this path for 63 miles and stops. How far is the car from its starting point? Round your answer to the nearest tenth.
*February 13, 2012*

**Algebra 2**

A UFO is first sighted at point A due east from an observer at an angle of 14 degrees from the ground. And at an altitude of 223 m. The UFO is next sighted at point B due east at an angle of 28 degrees and an altitude of 446 m. What is the distance from A to B? Round your ...
*February 13, 2012*

**Algebra**

A chair lift is to be built from the bottom of the mountain (point B) to the top (point T). A surveyor found the following measurements: ∠CBT = 21°, ∠BET = 17° and the distance BE = 780. What is the span of the chair lift? (The distance from B to T?) Round ...
*February 13, 2012*

**Algebra**

First year students attending Hogwarts ride in boats from the train station (point H) to the castle (point C). The most direct route is 760 meters and the boats travel at 100 m/min. Unfortunately, one boat got off course by 17° and traveled on this path for 5 min. until ...
*February 13, 2012*

**Algebra 2**

Find the values of the six trigonometric functions for ∠A in standard position determined by the point (63, 280). Enter your answers as fractions. sin A cos A tan A csc A sec A cot A
*February 13, 2012*

**Algebra 2**

Using the information given about a triangle, which law must you use to solve the triangle? Law of Sines, Law of Cosines, or Neither. ASA SSS SAS AAA SSA AAS
*February 13, 2012*

**math**

Triangle ABC has two sides that measure 12 inches and 16 inches. Which could be the measures of the corresponding sides of a triangle that is similar to triangle ABC? 1. 10 in and 14 in 2. 9 in and 12 in 3. 6 in and 10 in 4. 3 in and 8 in
*February 9, 2012*

**math**

Triangle ABC has two sides that measure 12 inches and 16 inches. Which could be the measures of the corresponding sides of a triangle that is similar to triangle ABC? 1. 10 in and 14 in 2. 9 in and 12 in 3. 6 in and 10 in 4. 3 in and 8 in
*February 8, 2012*

**math**

Which of the following is an illustration of the additive inverse property? 1. (-7)+7 = 0 2. 7+0 = 7 3. 7 x 1/7 = 1 4. 7 x -1 = -7
*February 8, 2012*

**Calculus**

Integrate [sinx/(1+cos^2(x))] from pi/2 to pi.
*February 5, 2012*

**critical thinking**

What are three approaches to effective writing and speaking
*February 5, 2012*

**math**

Light travels at a speed of 186,282 miles per second. How could this number be expressed in scientific notation? 1)1,862.82 x 10 x10 x10 2)1.86282 x 10 x10 x 10 x10 x10 3)1.86282 x 10 x10 x10 x10 4)186.282 x -10 x-10 x -10
*February 1, 2012*

**math**

Light travels at a speed of 186,282 miles per second. How could this number be expressed in scientific notation? 1)1,862.82 x 10 x10 x10 2)1.86282 x 10 x10 x 10 x10 x10 3)1.86282 x 10 x10 x10 x10 4)186.282 x -10 x-10 x -10
*February 1, 2012*

**Algebra 2**

There are two spinners. Each spinner is numbered 1-4. Each spinner is spun once. Find the probability of spinning each of the following:2 on the first spinner and a 4 on the second spinner, both numbers the same, 3 on exactly one spinner, one number less than the other.
*February 1, 2012*

**Algebra 2**

There are two spinners. Each spinner is numbered 1-4. Each spinner is spun once. Find the probability of spinning each of the following: a 3 on both spinners, 1 on one spinner and a 3 on the other, both numbers less than 4, 3 on at least one spinner.
*February 1, 2012*

**Algebra 2**

A bag contains 5 red, 9 white, and 10 blue marbles. Suppose you choose a marble from the bag and then choose another marble without replacing the first one. Find the probability of picking the same color both times.
*January 30, 2012*

**Math**

Redo My question is from geometry and it is it says find PB,PE,AP and PF if line AF, line BD, and line CB are median. then it says AF=33
*January 17, 2012*

**Math**

Redo My question is from geometry and it is it says find PB,PE,AP and PF if line AF, line BD, and line CB are median. then it says AF=33
*January 17, 2012*

**Math**

okay im in geormertyand i dont know how to solve this promblem its says PB,AP, and PF
*January 17, 2012*

**math**

Give each letter of the alphabet a money value: A= 1 penny, B= 2 penny, C= 3 penny,and so on.Find words worth 1/5 dollar, 9/10 dollar, 1 1/20 dollars, and 1 1/2 dollars.
*January 16, 2012*

**Chemistry**

What is the name of the compound PBr5 using the Stock system?
*December 14, 2011*

**CHemistry**

I don't really now this, but I suggest looking on google because they have many many answers and if you find out what this is then let me know!
*November 16, 2011*

**english ASAP**

how to give credit in an essay?
*November 14, 2011*

**english ASAP**

i am writing a paper and i want to write something that was said in the movie how do i give credit ?
*November 14, 2011*

**algebra**

Simplify by removing factors of 1: 9t^2+9t/36t^2+81t
*November 9, 2011*

**math**

what is the highth of a 30 in.tv that has the width of 24 inches?
*October 28, 2011*

**algebra**

Can someone show me how to use fractional exponents to solve 5^(1/4)*5^(2/3) and then convert to radicals and simplify to the lowest terms?
*October 20, 2011*

**algebra**

how do you get square root of (72)+ square root of (18) + square root of (50)
*October 20, 2011*

**Algebra**

I need help! The question is what numbers for which the rational expression is underfined in 8/9x+7
*October 11, 2011*

**Calculus**

If a rock is thrown upward on the planet Mars with a velocity of 14 m/s, its height in meters t seconds later is given by y = 14t − 1.86t^2. Estimate the instantaneous velocity when t = 1.
*October 8, 2011*

**algebra **

How would you solve 2/3 + 5/4
*October 7, 2011*

**algebra**

How would you solve 7/12 divided by 7/6
*October 7, 2011*

**algebra**

How would you solve 3/4 x 8/9
*October 7, 2011*

**algebra**

What happens when you plug 1 in for x into this rational expression (x^2-1)(x-1)-x
*October 7, 2011*

**english**

Although the trend is shifting, careers in science and technology continue to attract predominately men.
*September 29, 2011*

**Chemistry**

I'm supposed to do this for an organic chemistry prelab. I've read my books and tried Googling everything possible, but I still don't know how to set this up. Please help! The solubility of a certain compound in ice-cold water is 0.18g in 100 mL. Its solubility in ...
*September 29, 2011*

**Algebra II**

What was the percent growth in Home Depot's sales from 2002 to 2006. 2002 net sales was $52.1 billion 2006 net sales was $90.8 billion do the work in scientific notation I do not understand how to do this, please I need help.
*September 28, 2011*

**algebra**

The varable for y = -3/x, the varable for x = -3/y your answere is -3
*September 28, 2011*

**algebra**

an someone show me the steps to solve this problem? x^2 + 5x +8 divided by x + 3
*September 23, 2011*