Thursday

August 21, 2014

August 21, 2014

Total # Posts: 2,576

**physics**

Ball A is dropped from the top of a building of height h at the same instant that ball B is thrown vertically upward from the ground. When the balls collide, they are moving in opposite directions, and the speed of A is twice the speed of B. At what height does the collision ...
*August 10, 2014*

**algebra**

solve the following systwm graphically. Be sure to check your solution. if the system has an infinite number of solutions, use set-builder notation to write no solution, state this. 4y=x+8, x=2/3y+2
*July 9, 2014*

**math**

How to solve first question using a t table please help answer question really stuck on wok new answers 19 or170 can you tell me which is right showing work please thank you whole lot - jessica ledesma
*June 18, 2014*

**math**

At the faculty costume party , each teacher from Transylvania Middle school came dressed as his of her favorite creepy creature . The teachers arrived one at a time , and when a new teacher came in , each of the teachers already there lined up at the door and shook hands with ...
*June 18, 2014*

**Math**

A newspaper carrier has $1.80 in change. He has two more quarters than dimes but three times as many nickels as quarters. How many coins of each type does he have?
*June 12, 2014*

**physics**

What is the angular velocity of the object shown below if it rotates about the point P in the center? The rotational kinetic energy of the object is 1.4 J, the mass M is 1.3 kg, and L is 0.50 m.
*June 10, 2014*

**physics**

A man is playing tennis and a tennis ball (m=1.2 kg) approaches his tennis racket with a speed of 8.0 m/s. His racket is in contact with the ball for 2.0 ms and sends the ball flying in the opposite direction with a speed of 6.0 m/s. What is the magnitude of the average force ...
*June 10, 2014*

**Math**

Alex needs 2&1/4 cups of flour ,he has 2&3/10 cups Draw a number line that shows both fractions.
*June 9, 2014*

**Math**

Marc works in a dairy processing plant. He is paid 16.50/h. He is paid time-and-a-half if he works more than 40 hours in a week. Marc worked 54 hours this week. What is his gross pay? 1.5 x 16.50 = 24.75 24.75 x 40 = 990 Answer (what I got): 24.75 + 990 = $1014.75 The answer ...
*June 8, 2014*

**math**

below are the results of tossing a number cube 8 times find the experimental probability of tossing an even number. 3,4,1,2,5,1,6,5 1. 1/4 2. 3/8 3. 1/2 4. 5/8
*June 5, 2014*

**math**

how u get that?
*June 5, 2014*

**math**

write the number of permutations in factorial form.then simplify. how many different ways can you and four of your friends sit in the backseat of a limousine? A)4!;24 B)4!;120 C)5!;120 D)5!;720
*June 5, 2014*

**Information systems security **

What do I put in my enterprise security plan proposal? I need to cover the ten domains of Information Security Common Body of Knowledge propose the IT Security controls for the organization that you have chosen to write this for. I just need help on what exactly I am supposed ...
*June 5, 2014*

**Pre-Calculus**

if cos theta =7/13, where 0<theta<pi/2, fin the value of cos2theta
*May 31, 2014*

**Precal**

Suppose that you are sitting in a chair on a Ferris wheel that has a diameter of 120 feet that is boarded 6 feet above the ground at the 6 o’clock position. If the Ferris wheel moves in a counterclockwise direction and makes one revolution every 12 minutes, how high will ...
*May 26, 2014*

**Precal**

Suppose that Tiger hit a golf ball with an initial velocity of 150 ft/sec at an angle of elevation of 30°. Write the parametric equations to represent the flight of the ball. How long is the golf ball in the air? Determine the distance the ball traveled. When is the ball ...
*May 26, 2014*

**Child Development**

Thank You.
*May 20, 2014*

**Child Development**

Then it's D because identity moratorium is like if is is not so sure of what she wants to do and identity achievement is when she is sure about what she is going to do. She has already explored other employment and alternatives and made a decision. So it's D
*May 20, 2014*

**Child Development **

Rachel is a highechool student who has explored several employment and education alternatives. She has chosen to attend the community college near home to become a diesel mechanic. What is the identity status of Rachel according to James Marcia? A. Identity diffusion B. ...
*May 20, 2014*

**math**

The ABC Toy Company is creating two similar pieces for a board game as shown below. Find the value of b that makes the two pieces similar.
*May 7, 2014*

**Probability**

When two fair six-sided dice are rolled, there are 36 possible outcomes. Find the probability that either doubles are rolled or the sum of the two dice is 8.
*April 30, 2014*

**Probabitilty**

For hair color, Brown (B) is a dominant trait and Blond (b) is a recessive trait. If one parent has pure blond hair and one parent has hybrid brown hair, complete the Punnett square and questions that follow. a) What is the probability that their first child will have pure ...
*April 30, 2014*

**Math**

A card is drawn at random from a standard deck of 52 playing cards. What is the probability of drawing a red card or a black face card?
*April 30, 2014*

**Social work**

What kinda of game board or card game should I create about gay people? I need ideas. Thanks.
*April 28, 2014*

**English**

I did but its not giving me the information I am looking for. What is exactly Dyncorp and who they work for? I want to understand the word itself. Thank you!
*April 25, 2014*

**English**

I'm dong project on Dyncorp/CSE( Have to Give a brief description of the corporation- The human right violations it supports that makes this a social justice issue. Who profits and who pays etc)-Any action that can be taken to help prevent these human right abuses and/or ...
*April 25, 2014*

**mathematics **

Given that log5 3=0.683 and log5 7=1.209.without using calculator,evaluate (a) log5 1.4 b)log7 75 c) log3 125
*April 16, 2014*

**math**

log4(2x+4)-3 =log4 3
*April 16, 2014*

**Math**

Some fleet car license plates contain 4 numbers followed by 3 letters and then another 3 numbers. If this were the standard fleet car license plate and there are no other constraints, the number of plates that could be manufactured is
*April 11, 2014*

**Physics multiple choice questions**

1. Which of the following energy transformations best describes the operation of a solar powered battery charger? (a) electrical energy --> thermal energy --> kinetic energy (b) nuclear energy --> potential energy --> chemical energy (c) thermal energy --> ...
*April 8, 2014*

**Physics multiple choice questions**

1. Which of the following energy transformations best describes the operation of a solar powered battery charger? (a) electrical energy --> thermal energy --> kinetic energy (b) nuclear energy --> potential energy --> chemical energy (c) thermal energy --> ...
*April 7, 2014*

**Maths, Biology, Business Economics**

Hi I want to study Psychotherapy and be a Dance therapist but cannot find any courses for Dance Therapy in South Africa.
*April 7, 2014*

**Physics -- check answers please**

1. Which of the following energy transformations best describes the operation of a solar powered battery charger? (a) electrical energy --> thermal energy --> kinetic energy (b) nuclear energy --> potential energy --> chemical energy (c) thermal energy --> ...
*April 7, 2014*

**math**

If a 1,000 unit vitamin D is equal to 10 glasses of milk how many glasses are in a 50,000 unit vitamin D?
*April 5, 2014*

**optimization **

Farmer taylor wants to fence a rectangular area of 1800 square feet and divided into 3 parts by fencing parallel to the shorter side. What is the minimum amount of fencing for this job?
*April 3, 2014*

**Physics -- check answers please**

1. A boy pushes a car to slow it down while the car is rolling horizontally down the road. If the boy pushes backwards on the car with 10N of force as the car rolls forward 3.0m, the amount of work done by the boy is: a)-30 b)0 c)3.3 J d)30 N•m e)300J my answer: a 2. what...
*April 2, 2014*

**Accounting**

When common stock has a par value of $2 and a market value of $15: 1.) the liability of the stockholders is $13 per share 2.) there will be additional paid-in capital of $13 per share 3.) common stock will be credited for $15 per share 4.) the paid-in capital will equal the $2...
*April 1, 2014*

**Accounting**

An estimated liability: 1. Is an unknown liability of a certain amount. 2. Is a known obligation of an uncertain amount that can be reasonably estimated. 3. Is a liability that may occur if a future event occurs. 4. Is not recorded until the amount is known for certain. (...
*April 1, 2014*

**Accounting**

Internal control devices for banking activities include signature cards, deposit tickets, checks, and bank statements. 01.) True 02.) False True or False?
*April 1, 2014*

**Accounting**

An asset's cost includes all normal and reasonable expenditures necessary to get the asset in place and ready for its intended use. 01.) True 02.) False True or False?
*April 1, 2014*

**Accounting**

Problems: Please show all calculations. Claudette, Inc., provides warranties for many of its products. The January 1, 2014, balance of the Estimated Warranty Liability account was $38,500. Based on an analysis of warranty claims during the past several years, this year’s ...
*April 1, 2014*

**Math**

solve for y 2y = 18x y - 6 = 2x trying to help with homework and at a loss here.
*March 26, 2014*

**Math**

solve for y 3x + y = 2 Trying to help out my daughter, if you could show me steps that would be wonderful. Thank You
*March 26, 2014*

**Chemistry**

10.1g of potassium nitrate were dissolved in 50cm^3 of water. the temperature fell by 16 degrees celsius. Determine (a) the number of moles of potassium nitrate dissolve in 50cm^3 of water. (b) heat change that would be produced if one mole of potassium Nitrate dissolve ...
*March 25, 2014*

**Chemistry**

3.25g of zinc was added to 50cm^3 of a 4.0 molar dm^-3 HCl. When the reaction was completed the temperature rose by 28 degrees celcius. (a) Is the reaction exothermic or endothermic? (b)All the zinc dissolve in this reaction. How many moles of zinc reacted? (c) How many moles ...
*March 24, 2014*

**statistics**

help i do not understand how to solve this question: assume that blood pressure readings are normally distributed with a mean of 111 and standard deviation of 7. A researcher wishes to select people for a study but wants to exclude the top and bottom 10 percent. What would be ...
*March 24, 2014*

**statistics**

assume that blood pressure readings are normally distributed with a mean of 111 and standard deviation of 7. A researcher wishes to select people for a study but wants to exclude the top and bottom 10 percent. What would be the upper and lower readings to qualify people to ...
*March 24, 2014*

**language of medicine medical billing and coding**

How does the musculoskeletal system change from birth to adulthood and what are the steps that the system goes through from childhood to adulthood to reach 206 bones?
*March 21, 2014*

**Help pleasssseee!!!**

1. Which of the following describes an example of land reclamation? A. After an area is mined for copper, the soil is replaced and new plants are planted B. After a forest is clear-cut, desertification occurs C. After a forest is clear-cut, it is mined for copper D. After an ...
*March 19, 2014*

**America history**

6. In Mesoamerica, the shift to basic crops, including corn, beans, and squash, is referred to as the _______ revolution.
*March 18, 2014*

**algebra 1**

The sum of three consecutive integers is -204 . What is the largest integer?
*March 17, 2014*

**Business Calc**

We deposit $19000 into an account earning 3% interest compounded semiannually. How many years will it take for the account to grow to $47500 ? Round to 2 decimal places.
*March 8, 2014*

**Pre-Algebra**

How do you find the surface area of a cylinder and a cone?
*March 6, 2014*

**Chemistry**

Many portable gas heaters and grills use propane, C3H8(g). Using enthalpies of formation, calculate the quantity of heat produced when 17.0g of propane is completely combusted in air under standard conditions. Assume that liquid water is forming.
*March 3, 2014*

**Science -CHECK MY WORK-**

*March 3, 2014*

**world history**

Your Welcome! :)
*March 3, 2014*

**world history**

Why was it built? Answer..... Shortcuts, Land transportation the entire way. Ship through the Mediterranean and off load the ship, move the goods by land to the Red Sea or Arabian Gulf and reload on a ship.
*March 3, 2014*

**math**

A sweater that reg. sold for $48 was put onsale for 33 1/3% off. what is the sale price?
*March 1, 2014*

**math**

Dylan's Bicycle Shop offers a new bicycle on sale for $259.92 after a 10% markdown. What was the cost of the bicycle to Dylan if the markup was 30% based on the cost? (Round to the nearest cent.)
*March 1, 2014*

**college busines math**

The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells the dinners at an 80% markup based on cost. They decided to offer a $1.00-off ...
*March 1, 2014*

**Help please!!**

Oh so third?
*February 27, 2014*

**Help please!!**

Read the sentence below. Harry didn't know that his actions would affect so many people. He now regretted his choice. This is an example of ____________. A. first-person point of view<--- B. second-person point of view C. third-person point of view
*February 27, 2014*

**Help Pleasee!!**

1.Select the community activity that is a healthy choice to promote fitness for all ages A.annual 5K fun run for charity<--- B.annual state fair C.monthly movie in the park D.monthly laser light show at the planetarium 2.Mollie is well respected by her teammates even though...
*February 27, 2014*

**English**

Where can I search poverty in my community and its poverty statics for their respective areas? For instance, MN. Thank you.
*February 24, 2014*

**Social studies**

ok thanks :)
*February 21, 2014*

**Social studies**

C A D D B C D I don't think any of them are right I did the best I could.
*February 21, 2014*

**Social studies**

I have tried to answer these im just not sure help plz. 1. Which word best describes modern life for Japanese teenagers such as Asuka? relaxed crowded isolated traditional 2. Tropical storms often hit Japan during the ________. summer winter spring fall 3. Which of Japan's...
*February 21, 2014*

**history**

If you were one of the new immigrants who arrived in America in the 1880s, it's most likely that you would have been A. Italian and Catholic. B. Irish and Protestant. C. German and Lutheran. D. Swedish and Protestant. I think it's b.
*February 20, 2014*

**Math-- Check My Answers Please**

Thanks!
*February 19, 2014*

**Math-- Check My Answers Please**

Bonnie has a rectangular photographic print that is 5 inches wide and 7 inches long. If she multiplies both the length and width by 1.5, how will the perimeter of the print increase? a.) It will be 1.5 times the original size. b.) It will be 1.75 times the original size...
*February 19, 2014*

**Ap chem-Bases**

Calculate the pH of a 0.2M solution of Triethylamine, (C2H5)3N, with a Kb of 4.0x10^-4
*February 17, 2014*

**Ap chem-Bases**

Calculate the pH of a 0.2M solution of Triethylamine, (C2H5)3N, with a Kb of 4.0x10^-4
*February 16, 2014*

**Chemistry- acids/bases**

Find the concentration of OH- of a solution of 45.0mL of 0.0921 M Ba(OH)2 diluted with enough water to make 350.0 mL of solution.
*February 12, 2014*

**Chemistry- acids/bases**

Find the concentration of OH- of a solution of 45.0mL of 0.0921 M Ba(OH)2 diluted with enough water to make 350.0 mL of solution.
*February 12, 2014*

**Statistics in Psychology**

19. You measure how much people are initially attracted to a person of the opposite sex and how anxious they become during their first date. For the following ratio data, answer the questions below. Participant Attraction X Anxiety Y 1 2 8 2 6 14 3 1 5 4 3 8 5 6 10 6 9 15 7 6 ...
*February 10, 2014*

**Statistics**

A researcher measures how positive a person’s mood is and how creative he or she is, obtaining the following interval scores: Participant Mood X Creativity Y 1 10 7 2 8 6 3 9 11 4 6 4 5 5 5 6 3 7 7 7 4 8 2 5 9 4 6 10 1 4 (a) Compute the statistic that summarizes this ...
*February 10, 2014*

**Statistics**

(a) For the relationship in question 19, what is the proportion of variance accounted for? (b) What is the proportion of variance not accounted for? (c) Why or why not is this a valuable relationship?
*February 10, 2014*

**Math**

Kyle had 5/7 lb of birdseeds. Each bird feeder holds 1/5 lb of seed. Can kyle fill 5 bird feeders?
*February 5, 2014*

**Chemistry**

That makes sense! Thank you so much for your help! You really have no idea how much I appreciate it!
*February 4, 2014*

**Chemistry**

The question about the percent error and the reason for recovering more than the original mass is not asked in my lab questions. Being a math wiz, I know I did my calculations right and I even asked a fellow classmate and they too had a similar outcome. I am really just curious!
*February 4, 2014*

**Chemistry**

NaCl 36.4% SiO2 36.4% CaCO3 40.9% Percent recovery 113.7% Percent error 13.7% Original mass sample is 2.2g recovered masses NaCl 0.8g SiO2 0.8g CaCO3 0.9g total mass recovered 2.5g
*February 4, 2014*

**Chemistry**

Dr. Bob, I think youre right. I think I am over thinking this!
*February 4, 2014*

**Chemistry**

The CaCo3 and SiO2 are both solids so they remain in the filter. From there transfer it to a preweighed evaporation dish and add 3M HCl. From there we have a solid SiO2 and the supernatant liquid that we pour into a beaker and heat off to boiling and add 1M K2CO3. From there ...
*February 4, 2014*

**Chemistry**

I think I understand the SiO2 having a smaller amount present because the SiO2 most will absorb into the atmosphere due to the amounts of oxygen in the mixture to the oxygen level present in the atmosphere. I think the NaCl mass changes due to the heating process and alters ...
*February 4, 2014*

**Chemistry**

Beaker with the mixture, add distilled water, stir, pour through filered funnel= residue and filtrate filrate is boiled over a hot plate and the water boils off leaving just the NaCl
*February 4, 2014*

**Chemistry**

I did a lab the other day where we separated a mixture of NaCl, SiO2, and CaCO3. The Mixture was made by my professor and we did not know the original amounts of each compound. After recovering all of the compounds we found that there was.. 36.4% NaCl 36.4% SiO2 40.9% CaCO3 ...
*February 4, 2014*

**Math**

John has 18 coins worth $1.25. Some are nickels and dimes. How many of each does he have?
*February 3, 2014*

**Physics**

A 1.40 kg skateboard is coasting along the pavement at a speed of 5.5 m/s when a 0.800 kg cat drops from a tree vertically downward onto the skateboard. What is the speed of the skateboard-cat combination.
*February 3, 2014*

**Chemistry**

What mass in grams of a 0.500 m(molal) solution of sodium acetate, CH3CO2Na, in water would you use to obtain 0.200mol of sodium acetate?
*February 2, 2014*

**Calculus**

Find an equation of the plane. The plane that passes through (8, 0, −2)and contains the line x = 6 − 2t, y = 3 + 5t, z = 3 + 2t
*January 31, 2014*

**maths**

1 curry and 1 tea cost £4. 2 curries and 2 puddings cost £9. 1 pudding and 2 teas cost £2. What do you have to pay in total for 1 curry, 1 pudding and 1 tea? What does each item cost on its own?
*January 30, 2014*

**math**

1 curry and 1 tea cost £4. 2 curries and 2 puddings cost £9. 1 pudding and 2 teas cost £2. What do you have to pay in total for 1 curry, 1 pudding and 1 tea? What does each item cost on its own?
*January 30, 2014*

**Science ~CHECK MY WORK PLEASE~**

A scientist is trying to determine the identity of an element. It is highly reactive in water and forms an ionic bond with chlorine. It is also very shiny. The element is likely A. From Group 17 ********** B. From Group 1 C. From Group 15 D. A Noble Gas Which is most likely to...
*January 28, 2014*

**Science -CHECK MY WORK-**

Subject: The Periodic Table
*January 28, 2014*

**Science -CHECK MY WORK-**

a.) How can you describe the location of vanadium (V, atomic number 23) on the periodic table? Choose all that apply. 1. period 5, group 4 <<<My choices>>> 2. period 4, group 5 3. lanthanum series <<<My choices>>> 4. nonmetals 5. transition ...
*January 28, 2014*

**Algebra **

Systems of equation 1. +2y=5 8 -6y=3x-15 2).p-2q=4 2q=p+2 Solve the equations? I am stuck on how to do these last to problems thanks for the help
*January 26, 2014*

**Physic II**

Explain how objects can get charged by Friction.
*January 26, 2014*

**Physic II**

Explain how objects can get charged by Friction.
*January 26, 2014*

**Equation solving**

Perpendicular. To x-3y=2 and contains ( 2,4) 2). That is parallel to 2x+5y=4 I don't get how to solve and use y=Mx+b
*January 23, 2014*

**Eng**

I have to do an assignment on Ecosystems perspective and social work. I'm asked to write how they would apply the in ecosystems working with a community issue. How should I start my essay? I need ideas and issues to write and what exactly is ecosystem perspectives? Thank you!
*January 22, 2014*

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