Friday

August 29, 2014

August 29, 2014

Total # Posts: 69,918

**statistics**

Suppose that on a certain examination in advanced mathematics, students from University A achieve scores which are normally distributed with a mean of 625 and a variance of 100, and that students from University B achieve scores which are normally distributed with a mean of ...
*August 10, 2014*

**Life**

bobpursley i meant as in a name. but your answer makes sense. i'll make sure to structure my questions differently next time :)
*August 9, 2014*

**Life**

I think I'll go with ignorant. :) Thanks!
*August 9, 2014*

**Life**

Is there a way to call people who are against gay couples?
*August 9, 2014*

**AP Government and Politics**

This is my paragraph for racism, but I don't know where I'm going with it. "Another topic that adds to the culture war in America is racism. During the 17th century, America practiced slavery. It was part of the culture. Slaves, usually African Americans, were ...
*August 9, 2014*

**AP Government and Politics**

Ohhhhhh. I changed my main points from immigration to racism... Would that work?
*August 9, 2014*

**AP Government and Politics**

Ms. Sue, drugs!
*August 9, 2014*

**AP Government and Politics**

Since it's more of a legal/illegal situation, rather than a moral/immoral.
*August 9, 2014*

**AP Government and Politics**

Okay. I think I have to change immigration, right?
*August 9, 2014*

**AP Government and Politics**

I have to write a two page essay on whether or not I think that there is a culture war going on in America right now. I say that there is, and my examples are same-sex marriage, immigration, and abortion. Are these good examples?
*August 9, 2014*

**BIOCHEMISTRY**

Put bands from bottom(+ ve) to top (- ve) in following order - TTATTAACCTGAT
*August 8, 2014*

**algebra**

y=Z/n
*August 7, 2014*

**Math**

It's a levers problem. So You need to know following. Weight1 *Distance1(from fulcrum)=W2 *D2 What is child's weight? If 70 lb, 70 *5 =175 * X So X=2 Adult need to sit 2 feet from the fulcrum.
*August 7, 2014*

**trig**

the angle of from the top of a 41 fdepression as measured oot tower to a reference point on the ground is 65 degrees. How far away, to the nearest foot, is the reference point from the base of the tower
*August 7, 2014*

**Physics**

A gun is fired parallel to the ground. At the same instant, a bullet of equal size and mass next to the muzzle is released and drops to the ground. Which hits the ground first and why? I think that the bullets will hit the ground at the same time because the bullet that is ...
*August 7, 2014*

**physics**

A particle undergoes two displaments , measured from the positive x-axis, with counterclockwise positive.The first has a magnitude of 11 m and makes an angle of 88 with the positive x-axis. The resultant displacement has a magnitude of 6.8 m direceted at an angle of 115 from ...
*August 7, 2014*

**Chemistry**

HNO3 used as a reagent has a specific gravity of 1.42 g/ mL and contains 70% by strength HNO3. Calculate: Volume of acid that contains 60 g pure acid? Volume of water required to make 1 molar solution from 2 mL concentrated HNO3?
*August 7, 2014*

**Maths**

1) -_/a^3 2) _/_/a 3) _/^3_/64a^6b^12
*August 7, 2014*

**HISTORY**

The richest discovery in the history of mining occurred in 1873. This so-called "Big Bonanza" made _______ the richest man in the world.
*August 7, 2014*

**physics**

Show that the critical velocity of body revolving in cercular orbit very close to the surface of a planet of radiuis R and meandencity.
*August 7, 2014*

**physics**

a bus travels from one point to another wuth a speed of 40km/h and returns with a speed of 60km/h.what is e average speed and average velocity of the bus?
*August 7, 2014*

**sci**

How to prepare 1mol conc. Sol
*August 6, 2014*

**sci**

How to prepare 1mol conc. Sol
*August 6, 2014*

**algebra**

rational
*August 6, 2014*

**PHYSICS**

3) A 10.0 kg object is hanging by a massless rope in an elevator that is traveling upward. The tension in the rope is measured to be 75.0 N. What are the magnitude and direction of the acceleration of the elevator?
*August 6, 2014*

**Physics**

2) A child sits on a merry-go-round, 1.5 meters from the center. The merry-go-round is turning at a constant rate, and the child is observed to have a radial acceleration of 2.3m/s^2. How long does it take for the merry-go-round to make one revolution?
*August 6, 2014*

**Physics**

1) A car moving along a straight stretch of road at 60 mph [26.7 meters/sec]. The driver makes slams on his breaks locking them so that the car skids to a stop. Assume a constant braking force due to friction, and a kinetic friction coefficient of 0.70 between the tires and ...
*August 6, 2014*

**Math**

Explain how knowing that that 5 divided by 8 equals = .625 helps you write the decimal for 4 5/8
*August 6, 2014*

**anonymous**

The forms used in your coding area cost $100.00 per one thousand forms for the first 2,000 and $50 for every one thousand thereafter. If you need to order 5,000 forms, what is the total cost?
*August 6, 2014*

**surface processes on earth **

What is the most significant factor that ontros yhe development of soil.
*August 6, 2014*

**physics**

1. Two carts, one twice the mass of the other, experience the same force for the same time. What is their difference in momentum? What is their difference in kinetic energy?
*August 6, 2014*

**reading**

may cause drowsiness alcohol may intensity this effect. use oare when operating a car or dangerous machinery.which of the following is logical conclusion based on
*August 6, 2014*

**physics**

why is the surface of a bell made large?
*August 5, 2014*

**physics**

A projectile is launched at an angle of 30 to the horizontal with a speed of 30 m/s. How does the horizontal component of its velocity 1.0 s after launch compare with its horizontal component of velocity 2.0 s after launch?
*August 5, 2014*

**Finance Help**

I need to write about this question: Discuss the various stockholder rights. What factor(s) make the valuation of common stock more complicated than the valuation of bonds/preferred stocks? (im so confused!!) :(
*August 5, 2014*

**Math help**

5x+2y=12 How do i solve it?
*August 5, 2014*

**Sports **

What are some examples of some kind of disciplinary enforcement for sports?
*August 5, 2014*

**Dance**

I'm planning on trying out for dance team officer and I need help trying to find a squad name that starts with 'h'. Any ideas? Example: Hayley's Hershey kisses
*August 5, 2014*

**Afrikaaans**

Opstel titel is my skool
*August 5, 2014*

**Life orientation**

Can u replace that maths literacy and put another 1
*August 5, 2014*

**Life orientation**

To help people overcome poverty
*August 5, 2014*

**algebra**

what are the values of x in a^2+b^2=2014
*August 5, 2014*

**advance algebra**

(2/3,-1/2)(-3,-8)
*August 5, 2014*

**advance algebra**

(2/3,-1/2)(-3,-8)
*August 5, 2014*

**Human Resources**

3. Design a Pilot Test. Following are descriptions of three situations in which a test has been developed. Read each situation and then design a pilot test. Answer the following questions about the pilot test: a. Who will take the test? b. What information will you gather, and...
*August 5, 2014*

**Physics**

Thank you very much!
*August 4, 2014*

**Physics**

Why can you exert a greater force on the pedals of a bike if you pull up on the handlebars? Does it have anything to do with one of Newton's 3 laws? I'm not sure how to approach this question.
*August 4, 2014*

**physics**

A projectile is fired with an initial speed of 65.2 m/s at an angle of 34.5 degree above the horizontal on a long flat firing range. Determine (a) The maximum height reached by the projectile, (b) The total time in the air, (c) The total horizontal distance covered (that is, ...
*August 4, 2014*

**Math 221**

Do you mean (x^4 y^5) / (x^3 y^6) ?????? If so, remember when you divide you subtract exponents. =x^(4-3) y^ (5-6) =x^1 y^-1 which is = x/y
*August 4, 2014*

**computer history**

History,business study,tourism,zulu,maths literacy,english and life orientation. Am doing those subject and am in grade 11 I don't knw what career must I take anybody can help me my digit please 0724306682
*August 4, 2014*

**physics**

Lan."a"f609=714
*August 4, 2014*

**k**

What is the mass percent of sodium in NaCl?
*August 4, 2014*

**Physics-help please!**

A wave on a rope is 6.1m . a.) What is the wavelength of this wave? b.) If the frequency of the wave is 6.2Hz, what is the wave velocity?
*August 4, 2014*

**math**

Investor A deposits 1,000 into an account that earns an interest rate of 6% per annum compounded semi-annually. On the same date, Investor B deposits 800 into an account that earns an interest rate of 8% per annum compounded monthly. After how many years does Investor B’s...
*August 4, 2014*

**Physics**

The various energy changes you need to cover are: gravitational potential energy to kinetic energy kinetic energy to elastic potential energy and to heat elastic potential energy to kinetic energy and to heat kinetic energy to gravitational potential energy You could also ...
*August 4, 2014*

**physics**

Romeo is chucking pebbles gently up to juliet’s window, and he wants the pebbles to hit the window with only a horizontal component of velocity. He is standing at the edge of a rose garden 4.5 m below her window and 5.0 m from the base of the wall (Fig. 3-34). How fast ...
*August 3, 2014*

**math**

Find the standard form of the equation of the line that passes through (-3,2) and (-4,-7)
*August 3, 2014*

**math plz ugh**

Find an equation of the line with slope -3/4 and y-intercept (0,-5).write the answer in slope intercept form.
*August 3, 2014*

**math**

How would you find an equation of horizontal line that passes through the point (-4,-8)?
*August 3, 2014*

**math help plz!**

Write the following equation in slope-intercept form. Then identify the slope and y-intercept. -3x+7y=-9
*August 3, 2014*

**Physics**

A projectile is launched at an angle of 30 to the horizontal with a speed of 30 m/s. How does the horizontal component of its velocity 1.0 s after launch compare with its horizontal component of velocity 2.0 s after launch?
*August 3, 2014*

**Physics **

A projectile is launched at an angle of 30 to the horizontal with a speed of 30 m/s. How does the horizontal component of its velocity 1.0 s after launch compare with its horizontal component of velocity 2.0 s after launch?
*August 3, 2014*

**Calc BC**

When a chain hangs under its own weight, its shape is a catenary (from the Latin word for chain). The equation of a catenary with a vertex on the y-axis is . Find the length of the chain from . Then use the same technique from Problem #8 to find the length of the parabola with...
*August 3, 2014*

**physics**

Tension? Pulling one way, mg= 9.8*.06 and because it is not moving, that is the tension
*August 3, 2014*

**Grammar**

I am proud to be Hubert's child. Or I am proud to be Hubert's children.
*August 3, 2014*

**math**

Jane invests 500 at t=0 at a nominal annual interest rate of 6%, compounded quarterly. What additional amount will she need to invest at t=2 in order to have a total of 1,000 at t=5?
*August 2, 2014*

**Physics**

A projectile is launched at an angle of 30 to the horizontal with a speed of 30 m/s. How does the horizontal component of its velocity 1.0 s after launch compare with its horizontal component of velocity 2.0 s after launch?
*August 2, 2014*

**Physics**

A stone is thrown vertically upward with a speed of 18.0 m/s. (a)How fast is it moving when it reaches a height of 11.0 m? (b)How long is required to reach this height ? (c)Why are there two answers to (b)?
*August 2, 2014*

**Physics**

A car traveling 88 km/h is 110 m behind a truck traveling 75 km/h. how long will it take the car to reach the truck?
*July 31, 2014*

**greatbay community college**

A 5.00 kg stone is thrown upward at 7.50 m/s at an angle of 51.0 degrees above the horizontal from the upper edge of a cliff, and it hits the ground 1.50 s later with no air drag. Find the magnitude of its velocity vector just as it reaches the ground.
*July 31, 2014*

**math**

A specially made pair of dice has only one- and two-spots on the faces. One of the dice has three faces with one-spot and three faces with two-spot. The other die has two faces with one-spot and four faces with a two-spot. One of the dice is selected at random and then rolled ...
*July 31, 2014*

**life science**

why are fossils kept on a glass box in the museum
*July 31, 2014*

**math**

a bowl of fruit has 3 strawberries, 2 banannas and 1 apple. what fraction of the fruit is banannas?
*July 31, 2014*

**percentages**

Check this.
*July 31, 2014*

**percentages**

Say an advertiser makes $0.10 every time someone clicks on their ad. Only 20% of people who visit the site click on their ad. How many people need to visit the site for the advertiser to make $20?
*July 31, 2014*

**prealgebra**

A building lot in a city is shaped as a 30° -60° -90° triangle. The side opposite the 30° angle measures 41 feet. a. Find the length of the side of the lot opposite the 60° angle. b.Find the length of the hypotenuse of the triangular lot. c. Find the sine, ...
*July 31, 2014*

**science**

The greenhouse effect is caused by the burning of fossil fuels and deforestation
*July 30, 2014*

**English**

Are the english teachers on vacation or something? I posted my essay several times and did not see any reply.. Your help is essential!
*July 30, 2014*

**physics**

A car travels 2.74 km in the x-direction, then turns left 61.2◦to the original direction and travels an additional distance of 3.19 km. Calculate the x component of the car’s net displacement.
*July 30, 2014*

**Research Methods**

Thank you
*July 30, 2014*

**Math**

Frances can type 100 pages in h hours. At this rate, how many pages can she type in m minutes? A. mh/60 B. 60m/h C. 100m/60m D. 60h/100m E. 100h/60m
*July 30, 2014*

**Math**

Let R be the statement : for all sets A, B and C, if A⊆B∪C and B ⊆C∪A then AΔB = C. Q: Is R true for all sets A, B and C? Prove answer Let S be the statement: for all sets A, B, and C, if AΔB = AΔC then B⊆C. Q: Is S true? prove answer
*July 30, 2014*

**Math**

The endpoints of a diagonal of a square are (-2,2) and (1,5). What is the area of the square?
*July 30, 2014*

**Algebra**

For nonzero numbers x,y, and z, 3x=4y and 12y=5z. What is z/x?
*July 29, 2014*

**math**

1. Read the following statements: I. All trapezoids consist of two parallel sides. II. The base angles of all trapezoids are equal in measure. III. The lengths of the tall trapezoids legs are equal in measure. Which of the above statements are true? II only I only I, II, and ...
*July 29, 2014*

**Math**

At a speed of 48 miles per hour, how mnay minutes will it take to drive 40 miles? Is it 32 minutes?
*July 29, 2014*

**Math**

Two trains are travelling on parallel tracks both going from station A to station B.Train 1 leaves at 8 am, at 65 miles per hour. Train 2 leaves at 10 am, at 90 miles per hour. At what time will train 2 catch up to train 1?
*July 29, 2014*

**Math**

Let R be the statement : for all sets A, B and C, if A⊆B∪C and B ⊆C∪A then AΔB = C. Q: Is R true for all sets A, B and C? Prove answer Let S be the statement: for all sets A, B, and C, if AΔB = AΔC then B⊆C. Q: Is S true? prove ...
*July 29, 2014*

**PUBLIC SPEAKING**

One of the primary jobs of an informative speech is to: A. appeal to the emotions of the audience. B. ask them to do something with the information. C. communicate information accurately and clearly. D. entertain the audience.
*July 29, 2014*

**Writing**

Please give me a score of 1-6 (one being poor and six being excellent). Also, please give me some feedback! Thank you in advance! Essay prompt: What motivates people to change? Essay: Many people know that eating junk food is unhealthy. Yet, they keep eating it because it ...
*July 29, 2014*

**geometry**

A bachelor spends one half of his salary on entertainment,one fifth on food,one tenth on clothes and one fifth on rent.What fraction of his salary is left?
*July 29, 2014*

**bussiness math lit and tourism**

What university and job can I get
*July 29, 2014*

**Math**

Let R be the statement : for all sets A, B and C, if A⊆B∪C and B ⊆C∪A then AΔB = C. Q: Is R true for all sets A, B and C? Prove answer Let S be the statement: for all sets A, B, and C, if AΔB = AΔC then B⊆C. Q: Is S true? prove ...
*July 29, 2014*

**SAT WRITING**

Please give me a score of 1-6 (one being poor and six being excellent). Also, please give me some feedback! Thank you in advance! Essay prompt: What motivates people to change? Essay: Many people know that eating junk food is unhealthy. Yet, they keep eating it because it ...
*July 29, 2014*

**Criminal justice **

what subject matter does the us supreme court not have the power to decide?
*July 28, 2014*

**Math (Discrete Math)**

Let R be the statement : for all sets A, B and C, if A⊆B∪C and B ⊆C∪A then AΔB = C. Q: Is R true for all sets A, B and C? Prove answer Let S be the statement: for all sets A, B, and C, if AΔB = AΔC then B⊆C. Q: Is S true? prove ...
*July 28, 2014*

**SAT Writing**

Please give me a score of 1-6 (one being poor and six being excellent). Also, please give me some feedback! Thank you in advance! Essay prompt: What motivates people to change? Essay: Many people know that eating junk food is unhealthy. Yet, they keep eating it because it ...
*July 28, 2014*

**Calculus**

Find the antiderivative, F(x), with F′(x) = f(x) and F(0) = 1. f(x) = −7 x
*July 28, 2014*

**Chemistry**

The decomposition of NO2 at room temperature exhibits the following variation in concentration with time: The concentration of NO2 is expressed in mol/liter, while time is expressed in seconds. [NO2] ln[NO2] 1/[NO2] Time (s) 0.0831 -2.4877 12.03 0 0.0666 -2.7091 15.02 4.2 0....
*July 28, 2014*

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