Saturday

April 25, 2015

April 25, 2015

Total # Posts: 2,160

**statistical analysis**

Compute the mean and variance of the following discrete probability distribution. x P(x) 2 .50 8 .30 10 .20 Please assist and guide accordingly. Thank you so very much!
*August 1, 2013*

**statistical analysis**

2. The Computer Systems Department has eight faculty, six of whom are tenured. Dr. Vonder, the chair, wants to establish a committee of three department faculty members to review the curriculum. If she selects the committee at random: a. What is the probability all members of...
*August 1, 2013*

**statistical analysis**

A _________ is the total collection of individuals or objects.
*July 24, 2013*

**algebra**

Company A rents copiers for a monthly charge of $360 plus 12 cents per copy. Company B rents copiers for a monthly charge of $720 plus 6 cents per copy. What is the number of copies above which Company A's charges are the higher of the two?
*July 20, 2013*

**ENGLISH**

aha i really didnt know what is this for shure so thans anyway
*June 27, 2013*

**ENGLISH**

hahahahah ok thanks for help :))
*June 27, 2013*

**ENGLISH**

hahaha ok i hope this is it: ok,everyone,listen,please,I want to go over the plans for tonight one more time.Henrys train A)gets in at eight o'clock and he B)is expecting to be picked up by me and taken to a late meeting.On a way from a station,I C)will stop to get some ...
*June 27, 2013*

**ENGLISH**

is this correct:A A C B D C C D B A C B
*June 27, 2013*

**ENGLISH**

you really help me at a last one and if you have some time can you help me whit this too? Read the text and choose the correct answer. ok,everyone,listen,please,I want to go over the plans for tonight one more time.Henrys train_________at eight o'clock and he________ to be...
*June 27, 2013*

**ENGLISH**

can you please help me to solve this task? Complete the sentences with the correct form of the verbs in brackets. I 1 _____________________ (go) to the gym for quite a long time and I 2 _____________________ (still wait) to see some results. Every time I go, I 3 ...
*June 27, 2013*

**Business Math**

Abe Wolf bought a new kitchen set at Sears. Abe paid off the loan after 64 days with an interest charge of $12. If Sears charges 9% interest. What did Abe pay for the kitchen set (assume 360 days
*June 22, 2013*

**Physics**

Light of intensity 2 Wm^–2 is traveling through air (n = 1.0) is normally incident on a dielectric surface. If the intensity of the reflected light is 0.3 W m^–2 what is the refractive index of the dielectric material?
*June 13, 2013*

**spanish**

Que es Yaocuicatl?
*June 9, 2013*

**english**

what are some example of how the tv parlor in fahrenheit 451 is harmful
*May 21, 2013*

**social studies**

what happened to Denver after the gold rush?
*May 16, 2013*

**School**

How much force would you need to apply to a 1.7kg object to have it reach 5.8 m/s if it starts from rest?
*May 16, 2013*

**Physics**

Susie weighs 100lbs. Sam weighs 150. The seesaw is 20ft long. The seat on one side only is movable in one foot increments. At what distance from the axis should the seat be placed in order for them to balance? Where should each person sit?
*May 12, 2013*

**music**

HOW DO I IDENTIFY INTERVALS???? I need to know major, minor, augmented, diminished, and perfect. so here is what I kind of understand so far: PU: 0 half steps P4: 5 half steps P5: 7 half steps P8: 12 half steps, and for any one of these to be diminished, there needs to be one ...
*May 12, 2013*

**CHEMISTRY Homework**

What will be the products of the electrolysis of an aqueous solution of zirconium iodide (ZrI4)? (The electrodes themselves are platinum.)
*May 10, 2013*

**Chemistry Question**

Thank you I really appreciate your help!
*May 10, 2013*

**Algebra**

Are you doing ashworth Brittany?
*May 8, 2013*

**algebra**

A coffee shop sells small cups of coffee and large cups of coffee. A small cup of coffee costs $2. A large cup of coffee costs $3. On Tuesday, the store sold a total of 155 cups of coffee for a total of $335. How many small cups of coffee did the store sell on Tuesday?
*May 7, 2013*

**chemistry**

WHEN DOES A CHEMICAL BECOME A DRUG?
*May 5, 2013*

**computers**

Which type of chart would best illustrate each department's sales as a percentage of the overall store sales? Answer a. area b. bar c. line d. pie
*May 2, 2013*

**algebra 2 ap**

Jason uses his car for his job. He is allowed to depreciate the car 7% per year. IF the car was worth $23,000 new, in about how many years will the car be worth $3,000?
*April 28, 2013*

**Math**

What are three distinct numeric approaches for calculating the product 24x32?
*April 25, 2013*

**Math**

Shaun rides 8 kilo meters west from his house to school. After school he rides 6 kilo meters north to Mario's house. What is the distance from Mario's house to Shaun's house measured in a straight line?
*April 22, 2013*

**chemistry/Ksp**

It is more accurate to report a single value OR a range of values for Ksp?
*April 22, 2013*

**Math**

Mr.Brown is building a slide for his kids. The ladder is 3 meters tall ad the slide is 5 meters long. What is the distance between the ladder and the bottom of the slide?
*April 22, 2013*

**Chemistry**

Estimate the equilibrium constant for the weak acid HCN, if a 4.68×10-3 M aqueous solution of HCN has a [H+] 0.00000151 M (make an exact calculation assuming that initial concentration is not equal to the equilibrium concentration). HCN = CN- + H+
*April 17, 2013*

**Chemistry**

You have 1liter buffer solution containing 0.1 M HF and 0.05 M NaF. Now you add 0.055 moles of HCl to it. A) Do you think that the solution still retains it's effectiveness? B) Explain rationally how you came to the conclusion. I do not think that the solution would retain...
*April 16, 2013*

**chemistry**

how many grams of oxygen are in 175 g of C5H10O5
*April 16, 2013*

**Chemistry**

Consider the equilibrium 2NOCl (g) <---> 2NO (g) + Cl2 (g). In a 1 L container @ equilibrium there are 1.0 mol NOCL, 0.70 mol NO, and 0.40 mol Cl2. @ constant temperature and volume, 0.10 mol NaCl is added. What are the concentrations in the "new" equilibrium ...
*April 13, 2013*

**Chemistry**

Which of the following is/are present in a reagent bottle labeled 1.0 M H2SO4? I. H2SO4 II. HSO4- III. SO4-2 A. I only B. I and II C. II and III D. I, II, and III
*April 13, 2013*

**Chemistry**

Consider the equilibrium 2NO (g) <---> 2NO (g) + Cl2 (g). In a 1 L container @ equilibrium there are 1.0 mol NOCL, 0.70 mol NO, and 0.40 mol Cl2. @ constant temperature and volume, 0.10 mol NaCl is added. What are the concentrations in the "new" equilibrium in ...
*April 12, 2013*

**math**

1600
*April 11, 2013*

**physics**

The GoodYear blimp is kept aloft by helium gas which fills a volume of 4559m^3. It can carry a maximum load of 1176kg. How much more mass could the blimp carry if it were filled with hydrogen? Take the density of helium gas to be 0.160kg/m^3 and that of hydrogen to be 0.081kg/m^3
*April 10, 2013*

**Probabilities**

In a cookie jar, there are 6 chocolate cookies and 8 oatmeal cookies. I take out the cookies one at a time and proceed to eat them. The probability that the 7th cookie that I eat is a chocolate cookie is a/b, where a and b are positive coprime integers. What is the value of a+b?
*April 9, 2013*

**Math**

Bought 3 shirts & 2 pair pants for $85 and my friend bought 2 shirts & 5 pants for $130, and the shirts are the same price, what is the price of each shirt?
*April 8, 2013*

**Physics**

1a)if accelerating voltage is doubled in a CRT the deflection will change from "d" to ____? b) if magnetic field strength is doubled, deflection in a CRT will change from "d" to ___?
*April 7, 2013*

**Probabilities**

A group of 5 people are going to meet weekly at the library for 4 weeks. Each week, two people are selected at random to speak. Each person may speak in multiple weeks, but no pair of people will speak together more than once. The probability that there is a person who will ...
*April 1, 2013*

**Combinations**

Anna was opening a new restaurant, so she went to the sign store to get letters to make a sign to hang above the storefront. When she got to the sign store, the only letters they had in stock were two copies of the letter 'X,' two copies of the letter 'E,' and ...
*April 1, 2013*

**Probabilities**

A bag contains 150 balls numbered 1 through 150 . Three balls are drawn and placed on the table. The probability that the balls were drawn in increasing order can be expressed as a/b where a and are coprime positive integers. What is the value of a+b
*April 1, 2013*

**quiz**

We are given 7 squares of side lengths 1, 2, 2, 2, 3, 4, 5. They can be fitted to form a rectangle, with no overlap or gaps in-between. What is the perimeter of the rectangle?
*April 1, 2013*

**Maths**

Let f(x)=x^2 -1 . How many distinct real roots are there to f(f(f(x)))
*April 1, 2013*

**quiz**

The vertices of a cube are labeled with the numbers 0,1,2,3,4,5,6 and 7, such that no two vertices are labeled with the same number. The sum of any 2 numbers on an edge is prime. What is the maximum sum of the 4 numbers on a face?
*April 1, 2013*

**Math**

What is the answer to the equation (0.3.)²-(0.2)²•(0.5)?
*March 31, 2013*

**Trig**

Use a half-angle identity to find the exact value for sec(x/2) if sinx = -12/13 ; 3pi/2 < x < 2pi
*March 28, 2013*

**algebra**

Determine whether the following is a polynomial. 937g2h3 - 238gh2 + 54gh
*March 28, 2013*

**algebra**

The following polynomial is prime. 2q² + 9q + 1
*March 28, 2013*

**PHYSICS - formula?**

Here is one of my questions from my physics study. It tells me the answer (35 J), but how do I find that answer? I would appreciate a formula or step by step calculation. Thanks! :) A 30 kg kid on rollerskates is moving 1 m/s. His brother pushes him with a force of 5 N. What ...
*March 26, 2013*

**Life orientation**

1. Pollution - comes from factories, cars, etc. Think... try looking in your lesson or book and see if they gave examples of environmental hazards.
*March 26, 2013*

**science**

Those blue crystals are copper sulfate crystals with the formula CuSO4*5H20. It has
*March 26, 2013*

**science**

formula: CuSO4*5H20
*March 26, 2013*

**economics**

Yes, only you can answer. But just think, did you ever buy something because you saw it on tv? Or maybe you were on the computer and an ad popped up for a new video game that is coming out in stores soon. Maybe some new invention/product was featured in the newspaper. Do any ...
*March 26, 2013*

**Psychology **

How do I find reliable sites for a research project, when I can't use journal articles published online, or personal websites?
*March 23, 2013*

**Math **

Find the area of a circular segment of a circle of radius 7cm that sub tends a central angle of 35 degrees?
*March 22, 2013*

**CHEMISTRY**

How do you get the concentration with buret readings? What would the concentration of HC2H3O2 (M) be? For example, Molarity of the NaOH solution: 0.2619 M Final buret reading: 31.10 ml Initial buret reading: 0 Volume of NaOH solution: 31.0 ml concentration of HC2H3O2 (M...
*March 20, 2013*

**Maths**

498
*March 20, 2013*

**Maths**

What is the highest power of 3 that divides 1000! (1000 factorial)
*March 20, 2013*

**Cultural Anthrolpogy**

Anthropological research has demonstrated that supernatural beings and forces exist in what percentage of the world's cultures? A. 50 percent B. 80 percent C. 95 percent D. 100 percent My answer: C
*March 18, 2013*

**Cultural Anthropology**

Ms Sue, are my answers correct pls? Thanks.
*March 18, 2013*

**Cultural Anthropology**

Sorry. That is a sodality member. Also: Supernatural connections to political leadership are most closely associated with: A. bands. B. tribes. C. chiefdoms. D. states. I chose C. 2/ It is often difficult to identify who the leader is in a foraging society because: A. you can...
*March 18, 2013*

**Cultural Anthropology**

Hello Ms Sue. How are you? I am actually reading now. However, I am more leaning to A. Is this correct? Thank you. Anna
*March 18, 2013*

**Cultural Anthropology**

In a band society, who would most likely be responsible for punishing a murderer
*March 18, 2013*

**english **

hey everybody!I will make a presentation in the class few days later.Anyone watched The others(2001)?I got a question.Who is the woman in distress in the film and why is she in distress? thanks..
*March 15, 2013*

**PHYSICS**

The answer is 24696 J.
*March 14, 2013*

**PHYSICS**

Hi! I have some questions from a study guide in my physics class, and they give me the answer, but I have to show how to get the answer. I did most of them, but need help with this. All I need is a formula, please. :)Thank you! Here it is: A skier with a mass of 60.0 kg pushes...
*March 14, 2013*

**physics**

At a fabrication plant, a hot metal forging has a mass of 74 kg and a specific heat capacity of 430 J/(kg·C°). To harden it, the forging is quenched by immersion in 710 kg of oil that has a temperature of 32°C and a specific heat capacity of 3000 J/(kg·C&...
*March 13, 2013*

**Physics**

At a fabrication plant, a hot metal forging has a mass of 74 kg and a specific heat capacity of 430 J/(kg·C°). To harden it, the forging is quenched by immersion in 710 kg of oil that has a temperature of 32°C and a specific heat capacity of 3000 J/(kg·C&...
*March 13, 2013*

**Physics **

A rod made from a particular alloy is heated from 22.0°C to the boiling point of water. Its length increases by 8.15 10-4m. The rod is then cooled from 22.0°C to the freezing point of water. By how much does the rod shrink?
*March 13, 2013*

**Math**

How many degrees,in total,does the minute hand turn in one day ?
*March 12, 2013*

**Maths**

A tyre manufacturer has chosen 48 tyres at random from a production line and issued them to taxis for testing. Assume that the 48 numbers you have selected refer to the number of thousands of kilometres travelled during the life of each tyre. (For example, a value of ‘32...
*March 12, 2013*

**CHEMISTRY HELP!!**

When BaCl2 reacts with Na3PO4, Ba3(PO4)2 and NaCl are formed. Balance the equation and write the coefficients in the blanks.
*March 12, 2013*

**chemistry**

61.54 g
*March 9, 2013*

**Chemisty**

Fluorine gas can react with ammonia gas to produce dinitrogen tetrafluoride gas and hydrogen fluoride gas. This reaction is described by the following balanced equation: 5 F2 (g) + 2 NH3 (g) N2F4 (g) + 6 HF (g) What mass of hydrogen fluoride gas is produced from 135 g of ...
*March 8, 2013*

**Check my physics**

Would you mind checking one of my problems from my physics study guide? I know the answer and just want to make sure I am using the right formula. :) A 78-kg skydiver has a speed of 62 m/s at an altitude of 870 m above the ground. a. Determine the kinetic energy possessed by ...
*March 7, 2013*

**PHYSICS**

Hi! I have some questions from a study guide in my physics class, and they give me the answer, but I have to show how to get the answer. I did most of them, but need help with these. Here is problem #8: A 20 kg block of ice slides without friction down a long hill. The start ...
*March 7, 2013*

**PHYSICS**

Hi! I have some questions from a study guide in my physics class, and they give me the answer, but I have to show how to get the answer. I did most of them, but need help with these. Here is problem #7: A 30 kg ball is launched at an angle of 15 degrees and is moving 20 m/s ...
*March 7, 2013*

**PHYSICS**

Hi! I have some questions from a study guide in my physics class, and they give me the answer, but I have to show how to get the answer. I did most of them, but need help with these. Here is problem #6: A 30 kg kid on rollerskates is moving 1 m/s. His brother pushes him with a...
*March 7, 2013*

**PHYSICS**

Hi! I have some questions from a study guide in my physics class, and they give me the answer, but I have to show how to get the answer. I did most of them, but need help with these. Here is problem #5: A roller coaster car starts at Point A at a height of 100 m. When it ...
*March 7, 2013*

**PHYSICS**

Hi! I have some questions from a study guide in my physics class, and they give me the answer, but I have to show how to get the answer. I did most of them, but need help with these. Here is problem #4: What is the increase in thermal energy to a 2000 kg bus and its ...
*March 7, 2013*

**PHYSICS**

Hi! I have some questions from a study guide in my physics class, and they give me the answer, but I have to show how to get the answer. I did most of them, but need help with these. Here is problem #3: A 30 kg kid on rollerskates is being pushed by his mom with a force of 10 ...
*March 7, 2013*

**PHYSICS**

Hi! I have some questions from a study guide in my physics class, and they give me the answer, but I have to show how to get the answer. I did most of them, but need help with these. Here is problem #2: Suppose the spring in a pinball machine has a spring contant of k=400 N/m...
*March 7, 2013*

**PHYSICS**

Hi! I have some questions from a study guide in my physics class, and they give me the answer, but I have to show how to get the answer. I did most of them, but need help with these. Here is problem #1: A skier with a mass of 60.0 kg is standing at the top of a snow covered ...
*March 7, 2013*

**Exam: 986109RR - CHOOSING YOUR BUSINESS**

Um, the point of this website is not to give out ABCD answers. It's to help guide you. But we can't even help you do that since you posted so many answers. Sorry, can't help.
*March 7, 2013*

**algebra**

If the equation were x= 0.03x - 58.91, x would equal -60.7320.
*March 7, 2013*

**algebra**

What are you asking?
*March 7, 2013*

**Cultural Anthrolpogy**

The field of computer technology could be used to illustrate that culture is
*March 6, 2013*

**Physics**

For launching a satellite into orbit around earth, would the proper conservation of energy formula be: Epi + Eki + O work = Epf + Ekf? Would work = 0 for launching a satellite? And, would Epi = -Gm1m2/radius of earth or would it just equal 0 (because we usually set Ep on earth...
*February 28, 2013*

**Chem**

Calculate the pH of a .50 M solution of NaCl.
*February 27, 2013*

**Physics**

The electric field strength @ distance = 1.0 m from a point charge is 4.0 x 10^4 N/C. What is the Electric field strength @ 2.0 m from the same charge?
*February 27, 2013*

**Physics**

Thanks!
*February 27, 2013*

**Physics**

On the moon's surface, the force of gravity exerted by the moon on a camera is 2.4 N. What is the force of gravity exerted by the moon on the camera when it is in orbit with a radius = to twice the moon's radius?
*February 27, 2013*

**Maths A**

Select 48 values according to the following criteria. o The first thirty (30) numbers must lie in the range from 48 to 58 inclusive. o The next ten (10) numbers must lie in the range from 30 to 70 inclusive. o The remaining eight (8) numbers must lie in the range from 50 to 95...
*February 25, 2013*

**Maths A**

A tyre manufacturer has chosen 48 tyres at random from a production line and issued them to taxis for testing. Assume that the 48 numbers you have selected refer to the number of thousands of kilometres travelled during the life of each tyre. (For example, a value of ‘32...
*February 25, 2013*

**maths a**

The Bough and Bud Company combined an insect spray with a growth hormone to produce the MOP (More Oranges Production) Treatment, which was expected to increase the number of oranges produced by each tree. The data below shows the number of oranges produced by each tree in two ...
*February 25, 2013*

**MATHS A**

A tyre manufacturer has chosen 48 tyres at random from a production line and issued them to taxis for testing. Assume that the 48 numbers you have selected refer to the number of thousands of kilometres travelled during the life of each tyre. (For example, a value of ‘32...
*February 25, 2013*

**Maths A**

For this question, use the copy of the Random Number table provided at the end of this AAT. (This table was copied from page 111 in the Textbook.) Select 48 values according to the following criteria. o The first thirty (30) numbers must lie in the range from 48 to 58 ...
*February 25, 2013*