Friday

March 27, 2015

March 27, 2015

Total # Posts: 478

**Stats**

In one study of smokers who tried to quit smoking with nicotine patch therapy, 36 were smoking after one year after the treatment, and 34 were not smoking one year after the treatment. Use a 0.10 significance level to test the claim that among smokers who try to quit with ...
*November 26, 2012*

**Physics**

A soccer ball kicked on a level field has an initial vertical velocity component of 15 meters per second. Assuming the ball lands at the same height from which it was kicked, what is the total time the ball is in the air? [Neglect friction.]
*November 14, 2012*

**Math**

Find the absolute maximum value and the absolute minimum value, if any, of the following function. f(x)=1/x^2+2x+8 on [-2,1]
*November 9, 2012*

**math**

what is two equvalent fractions of 8 over 36
*November 5, 2012*

**Physics- Someone Please Help!!!**

For a I am getting 43 and I don't think that is right and for b I am getting 12 and I don't think that is right either. Are your values any where close to mine?
*October 29, 2012*

**Physics- Someone Please Help!!!**

A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0° with the horizontal. A 37.0 kg piece of luggage is placed on the ...
*October 29, 2012*

**Physics URGENT!!!**

A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0° with the horizontal. A 37.0 kg piece of luggage is placed on the ...
*October 28, 2012*

**Physics- PLEASE HELP**

A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0° with the horizontal. A 37.0 kg piece of luggage is placed on the ...
*October 27, 2012*

**Physics**

3. A 2000 kg sports car moves in a horizontal circular path of 150 m\radius at a constant speed of 80 m\s. a. magnitude of centripetal acceleration b. magnitude of centripetal force
*October 23, 2012*

**Physics**

A cannon ball is fired with a velocity of 200 m\s2 at an < of 25° above ground. The total flight time is 45.6 seconds. (Neglect air resistance.) a. Calculate the initial horizontal\vertical components of the velocity b. Calculate maximum height of the cannon ball above ...
*October 23, 2012*

**Physics**

1. A rescue plane flying horizontally at an altitude of 500 m and velocity of 300 m\s east drops a food supply packet to plane crash survivors on the ground. The packet falls freely to the ground without a parachute. Assume that the weather is perfect. a. Calculate the time it...
*October 23, 2012*

**Geometry Student**

if m<FGE = 5x+10, find x sp that FC and AE are perpendicular
*October 16, 2012*

**accounting**

18. Balance sheet and income statement data indicate the following: Bonds payable, 6% (issued 2000, due 2020) $1,200,000 Preferred 8% stock, $100 par (no change during the year) 200,000 Common stock, $50 par (no change during the year) 1,000,000 Income before income tax for ...
*October 2, 2012*

**Science 8R - Homework Check**

2000m= 200000cm The rest are correct!
*September 24, 2012*

**Math 8R - Help!!!!**

Hours x pay per hour= total pay 6 2/3 x 27=v 180 dollars
*September 24, 2012*

**Physics**

A diver springs upward from a board that is 4.40 m above the water. At the instant she contacts the water her speed is 14.0 m/s and her body makes an angle of 68.8 ° with respect to the horizontal surface of the water. Determine her initial velocity, both (a) magnitude and...
*September 24, 2012*

**Physics **

The drawing shows an exaggerated view of a rifle that has been ‘sighted in' for a 91.4-meter target. If the muzzle speed of the bullet is v0 = 392 m/s, there are the two possible angles θ1 and θ2 between the rifle barrel and the horizontal such that the ...
*September 24, 2012*

**math**

11, 121
*September 24, 2012*

**physics**

Nevermind, I figured it out. Thanks.
*September 23, 2012*

**physics**

A major-league pitcher can throw a ball in excess of 36.2 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches a catcher who is 17.0 m away from the point of release? I got -1.08 for the answer but my book is saying its wrong! ...
*September 23, 2012*

**physics**

The drawing shows an exaggerated view of a rifle that has been ‘sighted in' for a 91.4-meter target. If the muzzle speed of the bullet is v0 = 392 m/s, there are the two possible angles θ1 and θ2 between the rifle barrel and the horizontal such that the ...
*September 23, 2012*

**physics**

A diver springs upward from a board that is 4.40 m above the water. At the instant she contacts the water her speed is 14.0 m/s and her body makes an angle of 68.8 ° with respect to the horizontal surface of the water. Determine her initial velocity, both (a) magnitude and...
*September 23, 2012*

**science**

average speed= distance/time 6m/2sec= 3meters/second
*September 23, 2012*

**math**

for this problem multiplication/division should be done first, then addition/subtraction
*September 23, 2012*

**Science (Physics)**

1.A hiker started to walk from her campsite heading east with a velocity of 5 m\s after 6 seconds, she attained a velocity of 7 m\s. What is the average velocity of the hiker? What is the hiker’s acceleration? If the hiker continues walking for another 60 seconds, how far...
*September 20, 2012*

**Chemistry**

filtration is the only possible method.
*September 20, 2012*

**math**

if cos x= 2/5, what is the measure of less than x, to the nearest degree?
*September 4, 2012*

**Pysc**

Benjamin Whorf argued that because the Inuit have many words for snow, A. they have more ways to describe snow than speakers of other languages. B. they have better perceptual skills than speakers with fewer words for snow. C.they have more uses for snow in their culture. D....
*July 4, 2012*

**alg 1**

use the method of substitution to solve the system of linear equation 2x-y=5, 9x-4y=22
*June 13, 2012*

**Math**

(15 - 2x)0, for x = -3
*June 11, 2012*

**math**

3/7 of $250=
*June 5, 2012*

**Math - Functions**

Thanks so much, Mr. Steve!
*May 30, 2012*

**Math - Functions**

Please help! I have a test tomorrow. I've been working on this forever and just can't figure out the equation. Inputs X - 0, 3, 6, 9 Outputs Y - 1, 2, 3, 4
*May 30, 2012*

**Math - Functions**

I've been working on this function for quite awhile and just can't seem to get it. Inputs x 5, 6, 7, ? Outputs y 50, 72, 98, ? I need the equation too. Please help!
*May 21, 2012*

**Math**

I've been working on this function for quite awhile and just can't seem to get it. Inputs x 5, 6, 7, ? Outputs y 50, 72, 98, ? Please help!
*May 21, 2012*

**English II**

Imagination is a basic factor in correct expository writing.
*April 25, 2012*

**Chemistry**

Write a balanced nuclear equation for the positron emission of each of the following nuclei: a) arsenic-74 b) oxygen-15
*April 20, 2012*

**Chemistry**

consider the reaction: N2(g) + O2 (g) --> 2NO (g) removing some of the N2(g) will_____ A) increase the concentration of O2 B) decrease the concentration of O2 C) increase the concentration of NO(g)
*April 20, 2012*

**English**

How would I change these sentences from the passive to active voice? The Epistle to the Hebrews is said to have been written anywhere from 60-95 C.E . The authorship of the Epistle to the Hebrews has been a heavily debated issue since the passage was written, because it is ...
*April 17, 2012*

**health**

What are the implications of this shift for hospitals, consumers, and the health care delivery system as a whole
*March 29, 2012*

**geometry**

Find volume of a cone where the base is a square using 8inches,10inches,and 4inches
*March 26, 2012*

**Algebra**

Mark made a business trip of 290 miles. He averaged 56 mph for the first part of the trip and 60 mph for the second part. If the trip took 5 hours, how long did he travel at each rate?
*March 25, 2012*

**Algebra**

Alice travels 6 times faster than Bill. Traveling in opposite directions, they are 714 miles apart after 6 hours. Find their rates of travel.
*March 25, 2012*

**geometry**

A triangle where the base is a square: what is the volume using 8inches,10inches, and 4inches
*March 24, 2012*

**Satistics**

**I don't want the answer, I want to know how to set the problem up and the formula that I need to use. I am online with a tutor right now, and they can't help me. :-( The average price of a gallon of unleaded regular gasoline was reported to be $2.34 in northern ...
*February 12, 2012*

**Organic Chemistry**

The answer is 0.621 mol of hypochlorous acid because there is a 1:1 molar ratio in the balanced chemical equation.
*February 1, 2012*

**organic chemistry**

The answer is just 6.75 grams of NaOCl. The percentage just means 6.75 grams per 100 grams total with dilution.
*February 1, 2012*

**Ochem**

I would try setting it up as a proportion. The percentage just means that there are 6.65 grams of NaOCl per 100 grams. Therefore, set up the problem of (6.65/100)=(x/12.14)
*February 1, 2012*

**Organic Chemistry**

The answer is much less difficult to find. The answer for your problem is 0.257 mol because there is a 1:1 ratio of hypochlorous acid to 9-fluorenol.
*February 1, 2012*

**physics**

i dont know!!
*January 30, 2012*

**math**

Bert is planning to open a savings account that earns 1.6% simple interest yearly. He wants to earn exactly $160 in interest after 2 years. How much money should he deposit?
*January 25, 2012*

**statistics**

the true value of the population parameter is marked on each histogram,compare the bias of these estimates,and based on the performance of the three statistics in many samples,which is preferred as an estimate of the parameter?justify your answer.
*December 8, 2011*

**art**

what is the role of an artist?
*December 6, 2011*

**science**

what is the role of an artist?
*December 6, 2011*

**physical science 11**

whats the force of electrical attraction between a proton and an electron that are 9.5x 10-11
*November 19, 2011*

**chemistry**

3.5g of CuCl2.2H2O were dissolved and reacted with excess Na2SO3 in the presence of HCl. After filtration, 1.5g of CuCl crystals was obtained. Calculate the %yield.
*November 14, 2011*

**Repost Algebra**

What would it cost for ingredients , per cookie, to make 100 cookies? C=100/4x-28 is the equation given to find the cost. (Cost is equal to 100 over 4x minus 28)
*October 24, 2011*

**Science**

On the H-R diagram, red supergiants like Betelguese lie where?
*October 19, 2011*

**Short essay proofreading check**

I like it, but indent, maybe make it two paragraphs when you start talking about how he is self-centered.
*October 19, 2011*

**chemistry**

The principal component of many kidney stones is calcium oxalate,CaC2O4. A kidney stone recovered from a typical patient contains 8.50×10^20 formula units of calcium oxalate. How many moles of CaC2O4 are present in this kidney stone?
*October 19, 2011*

**chemistry**

During a reaction, you see that the heat (q) given off is 3.8 calories. Knowing that you used a mass of 100 g and that the temperature change was 7.85°C, what is the specific heat of this reaction?
*October 12, 2011*

**Stats Question**

41. % of women in us consider reading a favorite past time randomly u ask 6 women if it is their favorite pastime what's the probability that 5 respond no
*October 9, 2011*

**Stat Help**

A researcher wishes to be 95% confident that her estimate of the true proportion of individuals who travel overseas is within 4% if the true proportion. Find the sample necessary if in a prior study, a sample of 200 people showed that 40 traveled overseas last year. If no ...
*October 6, 2011*

**Technology**

• Prepare a 1,400 to 1,750-word paper detailing how a new technology system should be implemented or introduced to a company. Include your recommendations as if you were the manager in charge of implementing the new technology. Give your ideas on how the following ...
*September 28, 2011*

**college physics**

Two children are playing on a 145-m-tall bridge. One child drops a rock (initial velocity zero) at t = 0.The other waits 1.4 s and then throws a rock downward with an initial speed v0.If the two rocks hit the ground at the same time, what is v0?
*September 27, 2011*

**Maths**

Who do you figure out the surface area of a cylinder
*September 27, 2011*

**physics**

A stone is dropped from the roof of a tall building. A person measures the speed of hte stone to be 49 m/s when it hits the ground. What is the height of the building?
*September 18, 2011*

**physics**

An electron travels 7.63 m in 7.33 × 10−8 s. How fast does it travel? Answer in units of cm/s
*September 17, 2011*

**Physics**

A cube has sides of length L = 0.170 m. It is placed with one corner at the origin as shown in the figure below. The electric field is not uniform but is given by = (-6.00 N/C · m)x + (2.00 N/C · m)z. (a) Find the electric flux through each of the six cube faces ...
*September 9, 2011*

**Spanish 1-Please check**

Thank you
*September 5, 2011*

**Spanish 1-Please check**

How do you say the class of economics and the class of anatomy in Spanish. I think it is la clase de economis y la clase anatomis. Accent should be over both (i's)
*September 5, 2011*

**Spanish**

I have an assignment to write the subject pronoun that you would use when addressing a person and then what pronoun you would use when talking about them. I am totally confused and cant find help in my text. looks like this: Don francisco Maite y Ines Ines y Alex la profesora ...
*August 30, 2011*

**math**

find the restrictions on the domain and range for: y=square root of 6-2x
*August 26, 2011*

**physics**

A person takes a trip, driving with a constant speed 94 km/h except for a 83 min rest stop. If the person's average speed is 70 km/h, how far is the trip? Answer in units of km
*August 24, 2011*

**physic**

Lai was driving north on Hwy 75 with a speed of 56.9 m/s when she heard on a CB that a patrolman was hiding 127.3 m north of where she is. Knowing that the patrolman can start clocking the car in 2.7 seconds, Lai decided to slow to 34.2 m/s. and immediately pressed on the ...
*August 24, 2011*

**Chemistry**

1. Consider the conductance meter and the titration method of determining the salt content of a brine sample. Discuss at least two advantages and two disadvantages of each method. 2. A corrosion technologist pipetted a 50.00 mL sample of an unknown brine and titrated it with ...
*July 1, 2011*

**alg 2**

A rectangular plot is 30 feet long and 20 feet wide. The area will be doubled by adding a strip at one end and another strip of the same width on one side. What would be the width of the strip?
*June 28, 2011*

**history**

Neanderthals lived alongside Homo sapiens for thousands of years
*May 23, 2011*

**world history**

Neanderthals lived alongside Homo sapiens for thousands of years,
*May 23, 2011*

**world history**

Earthquake activity didn't play a role in the collapse of _______ civilization
*May 23, 2011*

**business**

What are the 5 types of employment groups?
*May 18, 2011*

**Medical Billing and Coding**

You make is sound so easy... I will do just that thanks.
*May 7, 2011*

**Medical Billing and Coding**

Yes it did. I just don't know how to put it all together and make it look good.
*May 7, 2011*

**Medical Billing and Coding**

Special features (what does the program do) is the program easy to use is the program able to be networked between facilities security and confidentiality of the patients records pricing and cost technical support and troubleshooting services Minimal hardware requirements ...
*May 7, 2011*

**Medical Billing and Coding**

Can anyone please help me with the research paper in compairing three different electronic medical records. If any one can bref me on this that would be great. I have done all the research my problem is I can't find the things that need to be addressed. Anyones feed back ...
*May 7, 2011*

**algerbra**

the area of trianlge ABC is 20 square units. if abgle A=130 and b=6 find the value of c?
*April 19, 2011*

**physics**

The forces acting on the object are 45 n and 60 n acting in the same direction. The friction force between the bag and the floor is 15n. What is the net fore acting on the bag? What is the acceleration of the bag?
*April 11, 2011*

**Statistics**

If 95% of the population has a measured IQ score between 70 and 130, what is the probability of meeting a person with a measured IQ either higher than 130 or below 70?
*April 9, 2011*

**Chemistry**

sorry to be asking too much but how do we get the density of water?
*April 6, 2011*

**Chemistry**

for #1, we have to find the density first right? so density is mass/volume, so from there you take 381.676 and divide that by.. and thats where im lost :(
*April 6, 2011*

**Chemistry**

An empty flask weighs 128.632g. After vaporization of a sample of volatile liquid, at a measured temperature of 99.8 C. The flask is sealed, cooled to room temperature, and weighed. The mass is now 129.225g. The measured P atm is 757.7 torr. The flask is rinsed and filled ...
*April 6, 2011*

**calculus**

That is what I came up with for my function. It just didn't seem to work out right when I went to solve. I will have to go back and check my math. Thank you for your help!!!
*April 3, 2011*

**calculus**

I am having difficulty coming up with the right function. The rest should fall into place, I know.
*April 3, 2011*

**calculus**

A company wants to bid on an order of 20,000 square based boxes which hold 5 cubic feet. The cardboard cost is $.15 per square foot. The boxes must be reinforced with an extra layer of cheaper cardboard on the bottom ($.12 per square foot). The box is held together with tape ...
*April 3, 2011*

**Geometry**

the area in a circle of each shaded region is given. Find x The given is 66 the angle is 180
*March 31, 2011*

**Geometry**

Find the area of this quadrilateral with the given vertices: A(-8,6) B(-5,8) C(-2,6) D(-5,0)
*March 31, 2011*

**Geometry**

Find the area of this quadrilateral with the given vertices: A(-8,6) B(-5,8) C(-2,6) D(-5,0)
*March 31, 2011*

**Geometry**

Find the area of this quadrilateral with the given vertices: A(-8,6) B(-5,8) C(-2,6) D(-5,0)
*March 30, 2011*

**math**

justins gas tank is 1/3 full. after he buys 2 gallons of gas, it is 1/2 full. how many gallons can justins tank hold?
*March 30, 2011*

**science**

Why is sucrose covalent but have ionic like characteristics? I am so confused I am doing a lab and i have no idea!
*March 28, 2011*

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