# Posts by mark

Total # Posts: 1,609

**College Algebra**

A circular vent pipe with a diameter of 5.5 inches is place on a roof that has a slope of 1/4. Find an equation of the ellipse that should be cut from the roof so that the pipe will fit. roound parameters to the nearest hundreth.

*December 10, 2013*

**Math**

mark has 24 baseball cards .he says that 8/24 are pitchers,5/24 are catchers and the rest fielders.what fraction below represents the difference between the number of fielders and catchers

*December 9, 2013*

**Math**

Well, first you have to find out how many are fielders. If 8 are pitchers and 5 are catchers, then the rest are fielders. Simply subtract 8 and 5 from 24. Then you take that number and subtract 5 from it. (Since difference means to subtract. And you're looking for the ...

*December 9, 2013*

**combinatorical mathematics**

At Brilli's zoo, she is trying to train a monkey to learn how to count. The monkey is given a stack of cards, numbered 1 to 30, in some random order. The cards are laid out from left to right. Each time the monkey moves the card numbered i+1 to the immediate right of the ...

*December 9, 2013*

**algebra 1**

how you get the answer for c?

*December 1, 2013*

**algebra 1**

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).

*December 1, 2013*

**algebra 1**

Which is the equation of the line that contains the points (0,3) and (-2,4)?

*December 1, 2013*

**algebra 1**

Look at the pattern that follows. Which expression represents this pattern algebraically? 8, 17, 26, 35, 44, …

*November 27, 2013*

**algebra 2**

The Butler family drives home from a vacation. The table of values that follows shows the relationship between the number of gallons, g, of gasoline their car uses and the distance in miles, d, the car is from home: Gallons of Gasoline Used (g) Distance from Home (d) 1 144 2 ...

*November 26, 2013*

**algebra 1**

A manufacturer is cutting plastic sheets to make rectangles that are 11.125 inches by 7.625 inches. Each rectangle’s length and width must be within 0.005 inches. A. Plot the acceptable range of lengths on the number line that follows: B. Write an inequality to represent ...

*November 24, 2013*

**algebra 1**

thats what he had for an answer but he thinks a reasonable answer is w= -3 why though? and why is it incorrect?

*November 23, 2013*

**algebra 1**

for |4-3w|>8

*November 23, 2013*

**algebra 1**

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).

*November 23, 2013*

**Spanish**

Are my answers correct? If I am wrong please don't give me the answer. Just ask me to try again. My choice marked by *** 1. Yo ______ en Chile y él ______ en Argentina. ***estoy . . . está estamos . . . estoy está . . . está estoy . . . est&...

*November 14, 2013*

**science**

Any topic (writer's choice) Research paper Science 3 pages / 825 words Discipline: Science Type of service: Writing from scratch Format or citation style: APA

*November 5, 2013*

**medicine**

A physician performed an aspiration via thoracentesis on a patient in observation status in the hospital. The patient has advanced lung cancer with malignant pleural effusion. Later the same day, due to continued accumulation of fluid, the patient was returned to the procedure...

*November 5, 2013*

**Statistics**

A camera store sells 40 pairs of binoculars per week on average with a standard deviation of 6. What is the probability that the store will sell more than 52 pairs binoculars in any week?

*October 21, 2013*

**Math**

The compatible numbers for 503 and 76 is 500 and 75.

*October 17, 2013*

**Math.. PLEASE HELP!! :(**

If I divided 1.23x10^-10 and 1.4x10^-8, would my answer be 0.88x10^-18?

*October 17, 2013*

**Math**

If I divided 1.23x10^-10 and 1.4x10^-8, would my answer be 0.88x10^-18?

*October 17, 2013*

**Science**

What condition is needed for an experiment to have useful data?

*October 17, 2013*

**Science**

What condition is needed for an experiment to have useful data?

*October 17, 2013*

**Science**

What condition is needed for an experiment to have useful data

*October 17, 2013*

**Can someone check these answer for me?**

Dont trust Nunyubuisness answer

*October 17, 2013*

**History**

Well say you were applying into a college but you had 15 choices to choice from. However, you had to limit the choices to 5 due to expenses and how far it was from home. So you apply into all 5 colleges and you only get into 1 of those 5 colleges. You go to the college but ...

*October 17, 2013*

**Science**

What condition is needed for an experiment to have useful data?

*October 17, 2013*

**Beginner French Work check**

Hello! Just wondering if someone could check my work as there were a few areas that i'm not completely confident about. Thank you so much! Complete the sentence with the correct form of the verb in the future. Elle ___sera venu_____ (venir) chez moi ce soir. Nous ...

*October 11, 2013*

**Intro to ethics 120**

he outlawing of slavery and extending voting rights to women seem to indicate that ethics can have beneficial results. Give an example from the past that indicates a similar result or a current social policy that might be regarded as wrong, which therefore needs to be changed...

*October 10, 2013*

**physics**

Consider an ideal spring that has an unstretched length l0 = 3.9 m. Assume the spring has a constant k = 20 N/m. Suppose the spring is attached to a mass m = 6 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance of x0 = 1.7 m from...

*October 10, 2013*

**biology**

D. control

*October 8, 2013*

**economics**

Speculate as to why price leadership is legal in the U.S. whereas price fixing is not?

*October 7, 2013*

**physic**

g-fjjsf

*September 29, 2013*

**French**

Thank you for the quick response! I have a PC with Windows. Also, i am having a hard time understanding what Direct and In Direct Pronouns i should use when they are in the same sentence. Elle demande le menu au serveur. Elle ___(1)___ ___(2)___ demande 1. le 2. lui Could you ...

*September 26, 2013*

**French**

Hello, I am taking a French course online and i just want someone to check some of my work from time to time to make sure i am doing it correctly and to give me any tips they may have. What i have copy and pasted below took me awhile to get so i just wanted a second opinion on...

*September 26, 2013*

**Quantum physics**

Anon, please help with 7 and 10

*September 8, 2013*

**Quantum physics**

Anon: 3rd choice foê Q3

*September 8, 2013*

**Quantum physics**

Someone know answers for 7th and 10th? Attempts are finishing :(

*September 8, 2013*

**AP Chemistry**

ayayayaaa

*September 7, 2013*

**Literature**

I'm not sure how to write it. I've learned about irony, foreshadowing, symbolism, etc.

*September 6, 2013*

**Literature**

HELP PLEASE!!! Can you state the aspect of style revealed in this quote so I can write a paper? "Clyde if I could only die. That would solve all this. And I have prayed and prayed that I would lately, yes I have. For life does not mean as much to me now as when I first ...

*September 6, 2013*

**literature**

HELP PLEASE!!! Can you state the aspect of style revealed in this quote so I can write a paper? "Clyde if I could only die. That would solve all this. And I have prayed and prayed that I would lately, yes I have. For life does not mean as much to me now as when I first ...

*September 6, 2013*

**English**

The flames slowly grow stronger. Is the word "stronger" used as an adverb modifying the verb "grow."

*September 3, 2013*

**English**

Except for a dog he is traveling completely alone. How many adverbs are there? I know "completely " is one . Does it modify is traveling?

*September 3, 2013*

**English**

In this sentence -- In this story, a nameless character goes outdoors on a terrible cold day in the Yukon. How many adverbs are there and what do they modify? Is it just "outdoors" and it modifies "goes"

*September 3, 2013*

**Literature**

I really need HELP!!! I need a quote for personal connection in American Tragedy by Theodore Dreiser and an explanation of the quote.

*August 31, 2013*

**Stats**

A study found that for adults the general self-efficacy scale mean score was 35 and standard deviation was 12. A group of clients (n=14) was measured for their general self-efficacy with the same measure and found having 40 with standard deviation of 20. A group of therapist ...

*August 17, 2013*

**programming Visual Command Prompt**

This is the question that I have to do can someone please help?! QUESTION 2 - MANDATORY The file savings.txt contains the names and savings of 3 Bank customers in the last four months. Month1 Month2 Month3 Month4 Dennis Daly 480 620 57 73 Brid Jones 82 61 550 65 Mary Henry 49 ...

*August 14, 2013*

**Psychology**

A!! thank you!

*July 26, 2013*

**Psychology**

Phyllis is anxious to ride the parachute drop at the park. Her friend, Betsy, feels faint at the thought and does not enjoy watching others ride. These different reactions demonstrate that _______________.
A. perception of stress varies among individuals&#...

*July 26, 2013*

**Psychology**

Ralph was the third child born to a family of seven. At times his mother confused his name with those of his five brothers. His was never the tallest, the strongest, the fastest, or the smartest in school. He was also too little to do something or too old to be "acting ...

*July 26, 2013*

**Math**

In the Capital Asset Pricing Model, the market risk premium is estimated over a long period of time because: A. more data is always better than less. B. a longer holding period gives a more reliable estimate because it is, in effect, a larger sample size. C. almost all ...

*July 21, 2013*

**Math**

In the Capital Asset Pricing Model, the market risk premium is estimated over a long period of time because: more data is always better than less. a longer holding period gives a more reliable estimate because it is, in effect, a larger sample size. almost all investors hold ...

*July 21, 2013*

**General Math**

A. rx is the return for a market index such as the S&P 500 Index. B. rx is the return for the stock being analyzed for example, IBM s return if we are estimating IBM s beta. C. the slope measures the average return for the market portfolio for each percentage change in the ...

*July 21, 2013*

**Finance**

I think that it is B the risk rate of return plus a risk premium

*July 21, 2013*

**Finance**

A. as the highest return a risk-averse investor wants from an investment. B. as the risk-free rate of return plus a risk premium. C. as the historical rate of return plus a risk premium. D. as a comparison between the expected and historical rates of return

*July 21, 2013*

**Maths**

this question is incomplete.

*July 20, 2013*

**Math**

Brilli the ant has a block of cheese that is in the shape of an equilateral triangle. She is hosting a party, and has invited her two-legged house mates. She insists that all of her guests get a piece of cheese that is in the shape of an isosceles triangle. What is the maximal...

*July 16, 2013*

**Math**

In triangle ABC, D is the midpoint of BC. E is the foot of the perpendicular from C to AD. If CD=7√,DE=3√, what is the measure (in degrees) of ∠BED?

*July 15, 2013*

**Math**

Brilli the ant has a block of cheese that is in the shape of an equilateral triangle. She is hosting a party, and has invited her two-legged house mates. She insists that all of her guests get a piece of cheese that is in the shape of an isosceles triangle. What is the maximal...

*July 15, 2013*

**Math**

Let ABCDEF be an equiangular hexagon with perimeter 98 such that EF=2CD=4AB and BC=2FA. What is the length of EF?

*July 15, 2013*

**Math**

How many {(1,1),(1,−1),(2,0)}-lattice paths are there from the point (0,0) to the line x=8? Details and assumptions A lattice path is a path in the Cartesian plane between points with integer coordinates. A step in a lattice path is a single move from one point with ...

*July 15, 2013*

**Physics**

You bounce on a huge trampoline and start oscillating up and down with a period of 3 s. After a long while, you come to rest but the trampoline below you is displaced below its natural height. How much is the trampoline bent in m? Model the trampoline as a spring.

*July 15, 2013*

**Math (algebra)**

Let x and y be real numbers satisfying 4x^2+5y^2=1. Over all such pairs, let the maximum and minimum values of 2x^2+3xy+2y^2 be M and N respectively. If M+N+MN=a/b, where a and b are coprime positive integers, what is the value of a+b?

*July 15, 2013*

**Essay**

Can someone help me please I have to write a essay on if you won a million dollars and cannot spend it on yourself or family what would you do with it. I need help to start it just the opening line please

*July 12, 2013*

**Math (please help me Steve)**

The squares of a 3×3 grid are filled with non-negative integers such that the sum of each row and the sum of each column is 7. How many different ways can the squares be filled? The numbers in each grid square does not need to be distinct. Rotations and reflections are ...

*July 8, 2013*

**Physics (help steve)**

no, it's wrong

*July 8, 2013*

**Physics (help steve)**

A boy is spinning on a chair and holding a paper bag so that it is horizontal, and perpendicular to the axis of the rotation. What should be the angular velocity of the boy in radians/second so that the bottom of the bag breaks? Details and assumptions Assume paper breaks at ...

*July 8, 2013*

**Math (please help steve)**

The squares of a 3×3 grid are filled with non-negative integers such that the sum of each row and the sum of each column is 7. How many different ways can the squares be filled? The numbers in each grid square does not need to be distinct. Rotations and reflections are ...

*July 8, 2013*

**Math (algebra)**

For every positive integer n, consider all monic polynomials f(x) with integer coefficients, such that for some real number a x(f(x+a)−f(x))=nf(x) Find the largest possible number of such polynomials f(x) for a fixed n<1000.

*July 8, 2013*

**Math**

The squares of a 3×3 grid are filled with non-negative integers such that the sum of each row and the sum of each column is 7. How many different ways can the squares be filled? The numbers in each grid square does not need to be distinct. Rotations and reflections are ...

*July 8, 2013*

**Calculus**

A spherical fish tank of radius 8 meters is being filled with at a constant rate of Rπ meters cube of water per second. At height 3 meters, the rate of change of the height is 1 meter per second. What is the value of R?

*July 7, 2013*

**Calculus**

Let V be the volume of the three-dimensional structure bounded by the region 0≤z≤1−x^2−y^2. If V=a/bπ, where a and b are positive coprime integers, what is a+b?

*July 7, 2013*

**Calculus**

Let R be the region bounded by y=−3(x−1)(x−3) and the x-axis. Let S be the solid obtained by rotating R about the y-axis. The volume of S is given by Nπ. What is the value of N?

*July 7, 2013*

**Calculus**

There are two points P=(a,a^2) and Q=(b,b^2) (a<b) moving along the parabola y=x^2. If the area of the region bounded by y=x^2 and the line segment PQ is always 36, what is the value of lim as a→∞ of PQ/a?

*July 7, 2013*

**Chemistry**

A metal crystallizes in a face-centered lattice. The radius of the atom is 198pm and the density of the element is 6.57g/cm^3. What is the identify of the metal?

*July 1, 2013*

**Chemistry**

Bulb A is 100 mL and contains Helium at 1 atm. Bulb B is 500 mL and contains Argon at 2 atm. The bulbs are connected together by a valve. What is the pressure of gas A after the valves are opened? (assume constant temperature)

*June 24, 2013*

**chem**

What will be the final volume of a 425 mL sample of gas initially at 22 degrees C and 1 atm pressure when the temperature is changed to 30 degrees C and the pressure to 0.471 atm?

*June 24, 2013*

**MATHS**

remember me stupid boy

*June 17, 2013*

**MATHS**

thats my friend

*June 17, 2013*

**math**

Angle P and Q are a linear pair. Angle Q is 36 degree less than twice of angle P. The measure of angle P is ? degree, and the measure angle Q is ? degree.

*June 12, 2013*

**Physics**

7) An apple falls from a tree (h = 9m). In the absence of air resistance, how fast is it traveling when it strikes the ground?

*June 5, 2013*

**Science**

7) An apple falls from a tree (h = 9m). In the absence of air resistance, how fast is it traveling when it strikes the ground?

*June 5, 2013*

**math**

Determine the area of the region between the curves: f(x) = -(3)x^3 + (6.25)x^2 + (27.1875)x - (9.328125) and g(x) = (1)x^2 + (3)x -(3)

*May 26, 2013*

**Math**

Determine the area of the region between the curves: f(x) = -3x^3 + 6.25x^2 + 27.1875x - 9.328125 and g(x) = 1x^2 + 3x -3

*May 26, 2013*

**Math**

Determine the area of the region between the curves: f(x)= 3x^2 + 16x + 28 and g(x) = -2x + 1

*May 26, 2013*

**science grade 8**

Please, explain why do you think that blowout preventer (BOP)was likely a hydraulic system (in the 2010 Deep Water Horizon oil spill accident), and what are the advantages and disadvantages of this hydraulic system in the Deep Water Horizon oil spill. Give an example from this...

*May 23, 2013*

**social studies**

Payment to workers, his dependents,and/ or survivorsin the event of retirement, disabilityor death are generally covered by the system of insurance known as ?

*May 22, 2013*

**History**

Thanks Ms. Sue, very helpful

*May 22, 2013*

**Hisory**

Why is the Benghazi Attack such a controversy? I need to answer this in a few sentences which I am having a hard time doing. I wrote my paper but I can't seem to summarize it.

*May 22, 2013*

**Math - PLEASE HELP**

Can someone help me answer this? Determine F ' (x) and F ' (1) if F(x) = integral sign lower limit = 4, upper limit = x 4t^10 (2 t^(1) 0 + 8 ln t) ^4 dt a) F ' (x) = b) F' (1) =

*May 20, 2013*

**Math**

Can someone help me answer this? Determine F ' (x) and F ' (1) if F(x) = integral sign lower limit = 4, upper limit = x 4t^10 (2 t^(1) 0 + 8 ln t) ^4 dt a) F ' (x) = b) F' (1) =

*May 19, 2013*

**math**

Sorry I posted this question earlier with a error. Can anyone help me solve this now? Can someone help me answer this? If a < 5 the define integral [a, 4] 2.4e^(1.4x)dx = 44 Find the value a Define integral = integral sign a = lower limit 5 = upper limit

*May 19, 2013*

**math**

Can someone help me answer this? Determine F ' (x) and F ' (1) if F(x) = integral sign lower limit = 4, upper limit = x 4t^10 (2 t^(1) 0 + 8 ln t) ^4 dt a) F ' (x) = b) F' (1) =

*May 19, 2013*

**math**

Can someone help me answer this? If a < 5 the define integral [a, 4] 2.4e^(1.4x)dx = 44 Find the value a Define integral = integral sign a = lower limit 4 = upper limit

*May 19, 2013*

**math**

Can someone please help? Solve the differential equation dy/dx = 6xy with the condition y(0) = 40 Find the solution to the equation y= ______

*May 19, 2013*

**chemistry**

Consider what happens to Ag2CO3 in aqueous solution. It dissociates as thus: Ag2CO3 --> 2Ag^+ + CO3^2- Now think about reactions of CO3^2- with water. The problem says to ignore Ag+ subsequent reactions. H2O <-> H3O^+ + OH^- CO3^2- + H3O^+ <-> HCO3^- + H2O HCO3...

*May 19, 2013*

**math grade 8**

Hi! I have to sketch 3D shape of the house using triangular prism, rectangular prisms, cube, and cylinder.I have to include measurement calculations with formulas. I already did it all, but someone told me that the SA (surface area) of my house calculated wrong. What I did is...

*May 19, 2013*

**mathematic**

0.06

*May 18, 2013*

**U.S/history AP**

I think the answer to number one is annexation.

*April 16, 2013*

**Algebra**

The value, V< of Juan's investment portfolio can be modeled by the equation V=16t^2-256t+16,000. When will Juan's investment portfolio be worth $16.576.00?

*April 8, 2013*