Friday

November 27, 2015
Total # Posts: 633

**Chemistry**

the answer is b)
*November 22, 2015*

**Precalculus**

How many ancestors have you had in the six generations preceding you? (Assume no unusual circumstances such as duplicate ancestors.)
*November 13, 2015*

**Statistics**

It is estimated that heights of adult men are normally distributed with a mean of 70 inches and a standard deviation of 3.5. In one state, the law requires a person to be 68 inches or taller to become a fire fighter. (a) What proportion of adult men will meet this height ...
*October 19, 2015*

**Physics**

An Object of mass 7 kg is pushed along a surface up to a velocity of + 10 m/s before it is let go. It then slows to a stop due to an 11-N frictional force. How long until it comes to a stop?
*October 12, 2015*

**Physics**

A 15.0-g metal cylinder is placed on a turntable, with its center 73 cm from the turntable's center. The coefficient of static friction between the cylinder and the turntable's surface is μs = 0.79. A thin, massless string of length 73 cm connects the center of ...
*October 5, 2015*

**Physics**

A red colored ball tossed upward reaches a maximum height of 3.0m. show that the initial speed is 7.7m/s^2.
*September 29, 2015*

**Math**

$38,000 loan, 60 month/ 5years, 7.5% rate, and the payments are made quarterly not monthly. How much are the payments going to be?
*September 3, 2015*

**Phyics**

A cylinder which is in a horizontal position contains an unknown noble gas at 4.63 × 104 Pa and is sealed with a massless piston. The piston is slowly, isobarically moved inward 0.202 m, while 1.95 × 104 J of heat is removed from the gas. If the piston has a radius...
*August 22, 2015*

**Economics**

Can someone please explain the difference between these, and how they apply to someone that has monotonic preferences? I have read in the book but they all seem to be running together and am so confused! Thank you. Symmetry Convexity Local Non-satiation Transitivity Completeness
*May 18, 2015*

**Math Please Check**

Please check my answers! Thank you! Simplify the following expressions. Collapse “x” terms, and/or simplify fractions and exponents. 1.) (12/5) / (36/20) = 4/3 2.) x^13*x^3 = x^16 3.) x^4 / (x^2)^3 = 1/x^2 4.) x^-3 / x^2 = x^-5 5.) (x^2-8x+16) / (x-4) = x-4 6.) x^(-1...
*May 18, 2015*

**Microeconomics**

If the price elasticity of demand is 2, this means that a __________ increase in price causes a __________ decrease in quantity demanded. A. 15%; 100% B. 15%; 10% C. 20%; 40% D. 30%; 20% answer B 15%, 10%
*April 19, 2015*

**math**

Say if these numbers make a right triangle and a Pythagorean triple: 2, 2 square root 2, and 2 square root 3. I am confident that the answer for both parts of the question is no, because when 2 is squared and when 2 square root 2 is squared it is larger than 2 root 3 squared. ...
*April 4, 2015*

**Calculus 2 (Series - Convergent or Divergent?)**

Can someone show me a step by step process and explanation how to solve this problem? 1) Consider the following series. (∞ on top of summation symbol) (k = 1 under the summation symbol) ∑ k(k+15)/(k+13)^2 Determine whether the series is convergent or divergent. If ...
*March 29, 2015*

**Calculus 2**

I need help in solving an initial-value problem and a few series problems (Especially on #45 & #46). I don't really understand how to do the series problems...majority of the time. An explanation would be great as well. Thank you for your time. #20) Solve the initial-value...
*March 29, 2015*

**physics**

When swimming across a river you swim to the east at 1.0 mph while the river flows southward at 2.4 mph. Your velocity is a superposition of these two velocities. What is your speed (i.e. the magnitude of your velocity)? i have no idea how to do this please help
*February 10, 2015*

**physics**

A box of books weighing 349 N moves with a constant velocity across the floor when it is pushed with a force of 434 N exerted downward at an angle of 37.9◦ below the horizontal. Find μk between the box and the floor.
*February 9, 2015*

**Accounting **

Can someone please tell me how to set this up? I tried doing (45+1.50 - 47) x 150 but I don't think this is right. thank you An investor in a Corporation. On January 1, Year One, purchased 150 shares of the corporation’s capital stock at a price of $45 per share. On ...
*January 11, 2015*

**math**

The perimeter of a rectangle is 72. the length of the rectangle is twice the width. Find the dimensions of the rectangle.
*December 11, 2014*

**math**

192 fl oz=_ pt
*November 29, 2014*

**College Algebra 1**

What is the interval notation for -4(x+9)^3(x-11)^4(x+6)>0
*October 19, 2014*

**physics**

We're you able to solve this? I cant find the answer!
*October 11, 2014*

**Calculus **

Would you please check my answer to make sure I did it right? Bus travel, a bus company finds that monthly costs for one particular year were given by C(t) = 100 + t^2 dollars after t months. After t months the company had P(t) =1000 +t^2 passengers per month. How fast is its...
*October 9, 2014*

**Math**

1. Find the common ratio and the 7th term of the sequence 2/9, 2/3, 2, 6, 18, ..... 2. The 3rd and 5th terms of a geometric sequence are 2 and 1/2 respectively. What is the first term? 3. Find the geometric mean between: a. 1/2 and 1/3 b. sqrt5 - sqrt2
*October 7, 2014*

**Math**

Find the number of the sides of a regular polygon, if the measure of one of its exterior angle is between 28 and 32.
*October 3, 2014*

**Math**

If the measure of an interior angle of a regular polygon is 165, find the sum of the measures of its interior angles
*October 3, 2014*

**Math**

The sum of the measures of four of the angles of a heptagon is 520. Two of the remaining three angles are congruent. The other remaining angle is 3/2 the measure of one of the two congruent angles. Find the measures of the remaining angles.
*October 3, 2014*

**Math**

1. Victor brought a brand new car for 750,000. IF the value of the car depreciates 20% per year, what will it be worth during the fourth year? 2. Given the terms a10 = 3/512 and a15 = 3/16384 of a geometric sequence, find the exact value of the first term of the sequence.
*October 3, 2014*

**Calculus **

Find all values of x if any where the tangent line to the graph of the given equation is horizontal? y= x - sqrt (x) I am very confused would I work it like this? y = x - x^-1/2 then set x = 0? Please explain. thank you!
*October 2, 2014*

**physics**

A net force of 5.34 N acting for 4.23 s on a mass initial at rest, causes it to travel 4.75 m in a straight line. What is the mass?
*October 2, 2014*

**Math**

1. A 16-team bowling league has 800,000 to be awarded as prize money. If the last-placed team is awarded 12,500 in prize money and the award increases by a constant amount for each successive finishing place, how much will the first-placed team receive? 2. In Museum A, a stamp...
*October 1, 2014*

**Calculus **

I am so lost, I have no idea what to do next. Find the equation of the tangent line to the graph at the indicated point f(x) =x^2 +x ; a=-1 I started out using f(-1)= (-1+h)-(-1)/h but i am so lost on what to do next. I have tried to look at examples in the book, but i do not ...
*September 25, 2014*

**Math**

What is a1 if a33 is equal to -2p and a74 = 26p? Our topic is arithmetic series and sequence. Thanks.
*September 22, 2014*

**Algebra**

What is a1 if a33 is equal to -2p and a74 = 26p? Our topic is arithmetic series and sequence. Thanks.
*September 21, 2014*

**Reading**

Where do I put it on the poster?
*September 5, 2014*

**Reading**

It was more of a curse.
*September 5, 2014*

**Reading**

If I'm putting it down on the poster, do I write it as it is or do I write it like this: "A faerie named Maleficent decided to cast a spell on the King and Queens new-born named Aurora. She did this in revenge of King Stefan cutting off her wings." -
*September 5, 2014*

**Reading**

A faerie named Maleficent decided to cast a spell on the King and Queens new-born named Aurora. She did this in revenge of King Stefan cutting off her wings.
*September 5, 2014*

**Reading**

When Maleficent heard that Stefan cut her wings off so he could become King, she was furious.
*September 5, 2014*

**Reading**

Yes.
*September 5, 2014*

**Reading**

The plot is that there was a young faerie named Maleficent who fell in love with a human. The human (Stefan) stopped seeing her as they got older, and intended to kill her so he could become king. Instead, he cut off her wings as proof that he killed her. When Maleficent heard...
*September 5, 2014*

**Reading**

For my movie poster, I decided to do one on the movie "Maleficent". I still don't know what to write for critic reviews focusing on the theme and plot.
*September 5, 2014*

**Reading**

Are critic reviews usually 1-2 sentences? (I'm writing one for a movie poster)
*September 4, 2014*

**Reading**

What is a critic review?
*September 4, 2014*

**Physics**

A sphere of radius R has inhomogeneous charge distribution on its surface. Its surface charge density is σ = σ0 cos θ, where σ0 is a positive constant, and θ is the angle from the “north pole” to the point of interest and satisfies 0 ≤...
*September 4, 2014*

**Reading**

For a movie poster, I'm supposed to have 2 critic reviews that should focus on the plot and theme. What should I write?
*September 4, 2014*

**Math**

640 acre is how big?
*August 29, 2014*

**Literature-Help me Ms. Sue**

It's not a reflective poem. It's discursive. It's an argument against death being the end-all, and an argument in poetry is referred to as discursive. Changes my mind about wanting to use this site for homework help when the teachers/tutors/instructors don't ...
*June 29, 2014*

**math**

A train leaves LAX traveling 65 MPH and another train leaves NY traveling at 35 MPH…at what destination will they collide
*May 21, 2014*

**Chemistry**

94.94 mL
*May 7, 2014*

**Physics**

An ornamental thermometer, commonly known as a Galileo thermometer, contains a number of spheres of hollow colored glass, representing different temperatures, immersed in a column of ethanol. A particular sphere rises from the bottom to the top of the column of liquid when the...
*May 1, 2014*

**Biology**

Does the adrenal gland have any role in DIRECTLY DETECTING a change in the blood glucose level? Or is only the pancreas involved?
*May 1, 2014*

**Science**

Please help! Is Mgl2 Magnesium iodide or Magnesium Chloride, I am confused
*April 28, 2014*

**Science**

Are the following Ionic, covalent or both? NH4Cl and NaOH Thanks
*April 28, 2014*

**American History**

Passed in 1935, Roosevelt's most significant reform measure was the what?
*April 17, 2014*

**Physics**

Which of the following is the equation of the circle with centre (-1.5, 0.5) and radius 3? A. 2x^2 + 6x + 2y^2 - 2y - 13 = 0 B. 2x^2 - 6x + 2y^2 + 2y - 13 = 0 C. 2x^2 - 6x + 2y^2 - 2y - 13 = 0 D. 2x^2 + 6x + 2y^2 - 2y - 23 = 0 E. @x^2 + 6x + 2y^2 - 2y -14 = 0
*April 12, 2014*

**Physics**

A man of mass 75 kg lies on a bed of 10,000 nails. The tip of each nail has an area of 1.0 square millimeter. What pressure does the man experience? [g=10 N/kg]
*April 12, 2014*

**Physics**

An object of mass 50 g floats in a liquid of density 2.5 g/ml. When the object is placed in a liquid of density 2.0 g/ml, it sinks to the bottom of the container. What is the force that the object exerts on the bottom of the container? [g = 10m/s^2 = 10N/kg]
*April 12, 2014*

**Physics**

A uniform bar length of 2.0m and weight 1000 N has its center of gravity at its center. The bar is pivoted 0.5m from the right, and supports a weight of 200N on the opposite end (left end). What is the weight needed at right end of the bar to balance the bar?
*April 11, 2014*

**Chemistry**

What is the pH of a solution of NaOH 10^-12 M?
*April 8, 2014*

**physics**

A car moving with an initial speed v collides with a second stationary car that is 50.7 percent as massive. After the collision the first car moves in the same direction as before with a speed that is 33.2 percent of the original speed. Calculate the final speed of the second ...
*March 26, 2014*

**Physics**

Thank you!
*March 17, 2014*

**Physics**

Suppose you pluck a string on a guitar and it produces the note A at a frequency of 440 Hz. Now, you press your finger down on the string against one of the frets, making this point the new end of the string. The newly shortened string has 4/5 the length of the full string. ...
*March 17, 2014*

**Physics**

Alfonso and Sarah like to go sky diving together. Alfonso has a mass of 86.0 kg and Sarah has a mass of 57.8 kg. While in free fall together (next to each other), Alfonso pushes Sarah horizontally with a force of 12.9 N. What is the magnitude of Alfonso's horizontal ...
*March 12, 2014*

**Math**

Mr.Ferris discovered in his 2013 copy of the world records book that the worlds largest pizza measured 5.83 feet in diameter. A regular pizza measures 0.6 feet in diameter. How much greater is the area of the larger rice cake?
*March 9, 2014*

**Physics**

You throw a beanbag in the air and catch it 3.3 seconds later. How high did it go?
*February 26, 2014*

**Physics**

You throw a ball downward from a window at a speed of 3.6 m/s. What will the speed of the ball be immediately before hitting the sidewalk 8.3 m below?
*February 26, 2014*

**Physics**

The Lamborghini Murcielago can accelerate from 0 to 27.8 m/s (100 km/hr or 62.2 mi/hr) in a time of 3.40 seconds. How fast will the car be traveling (m/s) after 5.1 seconds.
*February 22, 2014*

**Physics**

28.2+2.2*9
*February 22, 2014*

**Physics**

A car with a velocity of 28.2 m/s is accelerated uniformly at the rate of 2.2 m/s2 for 9 seconds. What is the car's final velocity?
*February 22, 2014*

**Physics**

74-39.7/5
*February 22, 2014*

**Physics**

Find the uniform acceleration that causes's a car's velocity to change from 39.7 m/s to 74.0 m/s in an 5 second period of time.
*February 22, 2014*

**Math**

Solve for variable 3/8 = 7/ x+1
*February 20, 2014*

**math**

34+28
*February 8, 2014*

**Physics**

Two cars pass a school when a stopwatch reads zero. They both travel in the same direction. Car A travels at a constant speed of 98 km/h and Car B travels at 64 km/h. How many meters apart are the two cars when the stopwatch reads 2.0 hours?
*February 8, 2014*

**Physics**

You and a friend each drive 54 km. You travel at 95 km/h; your friend travels at 118 km/h. How many minutes will your friend have to wait for you at the end of the trip?
*February 8, 2014*

**chemistry**

A sample of nitrogen gas is confined in a 8.278 x 10-2 L container at 2.236 x 102 torr and 50 oC. How many moles of gas are present in the sample?
*January 27, 2014*

**education**

A)are the same as functional skills. B)are different from functional skills. C)exclude functional skills d)include functional skills
*January 17, 2014*

**education**

adaptive skills
*January 17, 2014*

**physics**

A weight lifter lifts a set of weights a vertical distance of 2.07 m. If a constant net force of 335 N is exerted on the weights, how much net work is done on the weights? Answer in units of J
*January 17, 2014*

**physics**

A 395.0 g block is dropped onto a vertical spring with a spring constant k = 252.0 N/m. The block becomes attached to the spring, and the spring compresses 0.29 m before momentarily stopping. While the spring is being compressed, what work is done by the block's weight? ...
*January 1, 2014*

**Physics - please help me..**

A 395.0 g block is dropped onto a vertical spring with a spring constant k = 252.0 N/m. The block becomes attached to the spring, and the spring compresses 0.29 m before momentarily stopping. While the spring is being compressed, what work is done by the block's weight? ...
*December 31, 2013*

**physics**

A 395.0 g block is dropped onto a vertical spring with a spring constant k = 252.0 N/m. The block becomes attached to the spring, and the spring compresses 0.29 m before momentarily stopping. While the spring is being compressed, what work is done by the block's weight? ...
*December 30, 2013*

**Physics Help..**

Thank you sooo much!
*December 30, 2013*

**Biology**

***I read the textbook assignment and I have read all the information on the lesson, however I cannot find the answer to this question. Nor can I find anything written about it anywhere in the lesson. Please help a girl out.*** True or False? There are many origins of ...
*December 19, 2013*

**Physics! Please help! :)**

A concave mirror with a radius of curvature of 0.61 m is illuminated by a candle located on the symmetry axis 2.61 m from the mirror. Where is the image of the candle? Answer in units of m
*November 20, 2013*

**physics**

A concave mirror with a radius of curvature of 0.61 m is illuminated by a candle located on the symmetry axis 2.61 m from the mirror. Where is the image of the candle? Answer in units of m.
*November 20, 2013*

**Chem**

Please help I have no idea how to do this. There are three different dichloroethylenes (molecular formulaC2H2Cl2), which we can designate X, Y, and Z. Compound X has no dipole moment, but compound Z does. Compounds X and Z each combine with hydrogen to give the same product: ...
*November 12, 2013*

**college Algebra**

Reiny is right, this formula can't be right. Raising it to the power of x makes more sense.
*November 4, 2013*

**college Algebra**

Replace x with 50 and then multiply 78.5 x 1.001 x 50 to get your answer.
*November 4, 2013*

**Math**

Solve the system of equations. 2x - 4y = 3 -3x + 5y = 1
*October 25, 2013*

**physics**

A softball player hits the ball and starts running towards first base. Draw a motion diagram, using the particle model, showing her position and her average velocity vectors for the first few seconds of her run.
*August 30, 2013*

**51**

51
*August 8, 2013*

**geometry**

RS=8y+4 ST=4y+8 RT=15y-9 a.) what is the value of y? b.)find RS, ST, AND RT
*August 7, 2013*

**Math**

A corporation has 7 members on its board of directors. How many different ways can it elect a president, vice president,secretary, and treasurer?
*July 29, 2013*

**chemistry**

If you have 156g of SO2, how many molecules do you have?
*July 10, 2013*

**statistics**

the probability that a football game will go into overtime is 17%. In 240 randomly selected football games, what is the mean and the standard deviation of the number that went into overtime
*June 23, 2013*

**Writing **

can you check my grammar and spelling? and does it look better? Erin Oldham Calvin Brown 20 March 2013 ASL 2 ASL 2 Research paper I am writing about interviewing three Deaf Persons for my ASL research paper. The first person I interviewed is Christian DeGuzman. He has been ...
*May 18, 2013*

**math**

A hot air balloon descends at a rate of 320 feet per minute for 3 minutes. Whats the balloons total change in altitude?
*May 17, 2013*

**Social Studies**

The spread of the factory system resulted in: A. an increase in home production B. increased exports of British cotton good C. poorer quality of iron D. improved working conditions in factories. The industrial Revolution created new jobs in all of the following expect: A. ...
*May 14, 2013*

**Social Studies**

Which of the following contributed to Britain's Industrial Revolution? A. Large Labor force C. powerful monarchy B. Decreasing food supplies D. decreasing money supply. The textile industry met its last major challenge to full mechanization with the development of ? A. a ...
*May 14, 2013*