Thursday
October 23, 2014

Posts by Anna


Total # Posts: 1,995

Economics
I'm trying to research for a paper about why we shouldn't have flat tax rate, and a reason that i'm seeing people putting online, is that a flat tax rate of say, 18% would decrease tax revenue? Can someone explain how? I don't understand how taxes work.
September 26, 2011

improving it without changing its overall meaning
Ever been assigned to work on a group project for class! Many students dread group projects: because one student typically does most of the work. Unfortunately for some, group work does not end when students leave school, many employers use teams to accomplish ongoing ...
September 26, 2011

science
A 4.3 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.43 m above the counter?
September 24, 2011

math
draw a diagram to show how to find the solution 2.6 / 0.4 explain what the quotient means
September 19, 2011

Math
Pedro says the next expression in the following pattern is n+17,n+18,n+15,n+16,n+13,n+14._____ . Explain his error and write the correct expression.
September 19, 2011

Politics
I'm writing a speech, and it's about the topic "Private sector investment is preferable to public sector investment for Human Space Exploration" I'm on the con side for this argument, and one of my reasons was that public sector will spur cooperation, ...
September 18, 2011

physics
A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.5 x 10^5 kg, its speed is 27.0 m/s and the net braking force is 4.30 x 10^5 N, (A) what id its speed 7.50 s later? (b) how far has it traveled in this time?
September 18, 2011

HELP!!!!!!!!!GEOMETRY!!!!
THANK YOU
September 15, 2011

HELP!!!!!!!!!GEOMETRY!!!!
WHAT IS THE PERIMETER OF A SQUARE WHOSE VERTICLES ARE A(-4,-3), B(-5,1), C(-1,2), AND D(0,-2)?
September 15, 2011

Computer Science
An advertising agency wants to send a letter to all of its clients announcing a new fee schedule. The clients' names are in several different lists (arrays). The company merges the various lists to form one array, but clients could be listed in the array more than once. ...
September 13, 2011

algebra
Ms. Sue, I apologize, but all I'm getting is answers, I need to know how to work them out myself as my teacher didn't make himself clear.
September 9, 2011

algebra
how do i simplify -10 - (-7n) + (-9n)
September 9, 2011

AP Biology
What is important for reproducing animals? i dont exactly understand the question, help!!
September 7, 2011

stats
women age 20-29 is 36ml staandard deviation 7ml. What is probability greater than 45ml and between 30 and 62 ml
August 27, 2011

algebra
3 (x-8)
August 26, 2011

algebra 1
What is the "quotient" of 19 and m?
August 22, 2011

Math
Solve for a: a^-1 + b^-1 = 1
August 15, 2011

Math
Thank you so much! What I did wrong was pluck in the wrong equation
August 14, 2011

Math
A line has a slope of m = -1/3 and passes through the points (-4,k) and (2,3). Fine the value of k
August 14, 2011

Math
Solve for x: 6/x + 8/9 = 10/3x
August 9, 2011

calculus
(a) Modifying the parametric equations of a unit circle, find parametric equations for the ellipse: x^2/a^2 + y^2/b^2 = 1 (b) Eliminate the parameter to find a Cartesian equation of the curve x=2sint; y=4+cost; t >(or equal to) 0
August 8, 2011

Precalc(attn Bobpursley)
Hi i posted this before but I wanted to ask Bobpursley a few questions on his reply 1)For the first function you used cosine when they ask for sin, why is that? Also why did you put .5 in the beginning and end of the function? 2)For the second question why did you put 10 in ...
August 5, 2011

Precalc
okay sorry last two questions! I promise! The sun always illuminates half of the moon’s surface, except during a lunar eclipse. The illuminated portion of the moon visible from Earth varies as it revolves around Earth resulting in the phases of the moon. The period from a...
August 5, 2011

Precalc
of course! thanks!
August 5, 2011

Precalc
Okay for this question I know I am supposed to use the law of sines. But how can i tell what side is what? In right triangle ABC, a = 120 and c = 140, and ÐC is the right angle. Solve the triangle. Round to the nearest tenth, if necessary.
August 5, 2011

Precalc
oh I see thank you very much I totally get it now
August 5, 2011

Precalc
How do you know to use cos and not sine?
August 5, 2011

Precalc
oops sorry never mind
August 5, 2011

Precalc
where did the 12 come from?
August 5, 2011

Precalc
I am having trouble figuring out this question Jan observes a buoy bobbing up and down through a total amplitude of 8 feet. Beginning at the top of the wave, if the buoy completes a full cycle every 8 seconds, what is the height of the buoy relative to its lowest point after ...
August 5, 2011

math
Thanks hon!
August 4, 2011

math
(f-g) (fx)=1/x+2 g(x)= 3x I got -3x^2-6x+1/x+2 is this correct?
August 4, 2011

Precalc
Hello I need help with this question. I know that the formula for angular velocity is w= theta/time. I also know that the answer is 750 rpm. I am just not sure how to get that answer A truck driver travels at 58 miles per hour. The truck tires have a diameter of 26 inches. ...
August 2, 2011

calculus
The integral of sinx is from 2pi to infinity
July 31, 2011

calculus
Recall that a function G(x) has the limit L as x tends to infinity, written lim(x->infinity)G(x) = L, if for any epsilon > 0, there exists M >0 so that if x > M, then |G(x) − L| < epsilon. This means that the limit of G(x) as x tends to infinity does not ...
July 31, 2011

integral
thanks
July 31, 2011

integral
complete the integral e^(x^1/3)
July 31, 2011

Alg 2
a rectangular picture frame measures 8 inches by 4 inches. You want to triple the frame's area by adding the same distance, x, to the length and width. Find the value of x and find the new dimensions of the frame. How do you do this?? Please show work
July 26, 2011

MicroEcon
The market for apple pies in the city is competitive and has the following demand schedule: Price Quantity Demanded $1 1,200 2 1,100 3 1,000 4 900 5 800 6 700 etc... 13 0 Each producer in the market has fixed costs of $9 and the following marginal cost: Quantity Marginal cost ...
July 26, 2011

geometry
what kind of triangle has sides of lenght 12,16,24?
July 22, 2011

medical coding
A condensed summary compiling information about a particular field of knowledge is a a. compendium b. compliance manual c. treatment guidelin d.pharmacopeiae
July 17, 2011

Spanish
Thanks so much for the explanation! I understand the reason now.
July 11, 2011

@SraJMcGin Spanish
oh and for 16) i got por
July 10, 2011

@SraJMcGin Spanish
El abuelo de Guillermo le cuenta sobre un viaje en barco a Espana. Completa el parrafo con por o para. Cuando fui a Espana (12____) primera vez, se viajaba (13____). Estuve en el oceano (14____) diez dias (15____) una tormenta horrible. Pero, (16____) ser un viaje tan largo, ...
July 10, 2011

Spanish
El abuelo de Guillermo le cuenta sobre un viaje en barco a Espana. Completa el parrafo con por o para. Cuando fui a Espana (12____) primera vez, se viajaba (13____). Estuve en el oceano (14____) diez dias (15____) una tormenta horrible. Pero, (16____) ser un viaje tan largo, ...
July 10, 2011

Spanish
Oh!!! I understand now! Wow, that really cleared it up for me! Muchas gracias Sra! This will really help me with the rest of my class.
July 9, 2011

Spanish
oh thank you! one more question: for 9. if it is the familiar command aren't i supposed to take comer drop the -er and add the opposite ending so it becomes coma? so shouldn't the answer be C?
July 9, 2011

Spanish
Gracias Sra! Sorry for the trouble at first!
July 9, 2011

Spanish
of course, I am so sorry for the inconvenience! Choices A) dar por sentado B) descomponerse C) comprensivo D) el caparazon E) herir Statements to Match With Choice 1. Usualmente los amigos son así si tenemos problemas y necesitamos a alguien para escucharnos y hacernos ...
July 9, 2011

chemistry
what is the experimental errors in determining the formula unit of zinc chloride?
June 25, 2011

math
Thank you Henry! I really appreciate your help! :) Great!
June 23, 2011

math
I cant figure this thing out fully, I feel so clueless. Does anyone have any pointers or tips for me? Company needs a new copy machine. Rent costs are = 17.5 cents / each. Number of copies = atleast 200 000. (The company agrees to buy at least that number) Buying the unit ...
June 23, 2011

Spanish
4. ¿Qué pasa? ¿No me oyes? A) si, te oigo. B) si, les oigo. C) no, no se oigo. D) no, no me oigo. 7. Le compro un regalo para mi hermana. A) se la compro esta tarde. B) me lo compro esta tarde C) te las compro esta tarde. D) se lo compro esta tarde. 9. Te...
June 20, 2011

Cultural Diversity
the lanaguage learning approach of certain non-mainstream cultures seems to require children to do what in regards to human speech
June 10, 2011

chemistry
As a lab, we will be given a small amount of calcium and will be told to find the mass of it without using a scale( using stoichiometry or mols?) I just don't know how to do this! Thanks!
May 29, 2011

algebra
yes
May 26, 2011

Math
The length and width of the field as a ratio of 11:7. The width is 20 meters less than the length. How many m2 is the area?
May 21, 2011

Spanish-7th grade-Please check
hmm.. i would say 1 because the picture does not show the family actually watching t.v.
May 19, 2011

CHEMISTRY
If one added 130 mL of 2 M NaOH to 1 L of a buffer composed of 2.3 M NH3 and 3.2 M NH4Cl, what would be the pH of the resulting solution? The Kb of NH3 is 1.8 × 10−5.
May 17, 2011

History
Can i have a short summary of the spanish conquest 1492-1580? main events, ex: slave trade, colonization, etc
May 16, 2011

7th grade math
-2(8-4)-8(-6-8)= im notsure how to do this can someone please explain how to do this and what the answer is, i keep coming up with 2 but thats not right. i need help!
May 16, 2011

trig
determine all trig functions of theta using the given info, state the answers correct to the nearest hundredth. cos (theta) = -5/13; tan (theta) < 0
May 14, 2011

Chemistry
Calculate the theoretical pH after 2.50ml and 9.50ml of NaOH has been added in both the titration of HCl and of HC2H3O2.
May 10, 2011

chemistry
for the vaporization of water at 1.00 atm, delta H=43.54 kj/mol at 298 K and delta H= 40.68 kj/mol at 373 K. the constant-pressure heat capacity of liquid water is 75.3 J/molK. calculate the constant pressure heat capacity for H2O(g).
May 9, 2011

Science
A 7-kg brick is dragged across the floor by a horizontal force of 42 N. If a frictional force of 18 N also acts on the brick, what is its acceleration?
May 3, 2011

Science
To determine the mass percentage of an iron sample, the dissolved sample [iron exists at the start as iron(II)] was titrated with potassium permanganate (permanganate forms manganese(IV) oxide.)If 22.25 cubic cm of 0.0123 potassium permanganate, what is the mass percent of ...
May 2, 2011

science
A skateboarder initially traveling at 1.8 m/s accelerates at a rate of 1.5 m/s squared for 2.5 s. How far does the skateboarder go in this time? What is the equations used, variable solving for, and of course the solution.
April 21, 2011

science
If we were to watch a sunset, how long is it from the time the Sun begins to set until it is dark?
April 21, 2011

Geometry
Find the area of a regular octagon with a perimeter of 80 inches round to the nearest tenth
April 18, 2011

spanish
Using the subject “usted” and the verb in the imperative, tell your instructor three things she or he must do. Then tell your instructor two things she or he must not do. You will be graded on accuracy and pronunciation. Provide your sentences in Spanish.
April 18, 2011

Chemistry-Plz see this DrBob
Thank you so so much!!!
April 16, 2011

Chemistry-Plz see this DrBob
I am sorry I do not know what happens the symbolism, so I just deleted the symbols. Is it works for you that deleted the symbols? Using standard reduction potentials, calculate the standard Ecell, emf, for each of the following reactions. State if each reaction is spontaneous ...
April 16, 2011

Chemistry- Please help!!
Using standard reduction potentials, calculate the standard Ecell, emf, for each of the following reactions. State if each reaction is spontaneous or nonspontaneous. (Use the below reactions AS WRITTEN, DO NOT REARRANGE ANY REACTIONS.) You must show the two half-reactions and ...
April 16, 2011

Chemistry- Please help!!
Using standard reduction potentials, calculate the standard E¡Æcell, emf, for each of the following reactions. State if each reaction is spontaneous or nonspontaneous. (Use the below reactions AS WRITTEN, DO NOT REARRANGE ANY REACTIONS.) You must show the two half-...
April 16, 2011

Chemistry
Using standard reduction potentials, calculate the standard E¡Æcell, emf, for each of the following reactions. State if each reaction is spontaneous or nonspontaneous. (Use the below reactions AS WRITTEN, DO NOT REARRANGE ANY REACTIONS.) You must show the two half-...
April 16, 2011

Chemistry Please help!!
An electrochemical cell that uses the reaction Ti^3+ + 2Cr^2+ -> Ti^1+ + 2Cr^3+ Has a standard cell potential of E¢ªcell = +1.19V a. Write the two half-cell reactions. b. Determine the E¢ªred(reduction).
April 16, 2011

Chemistry
An electrochemical cell that uses the reaction Ti^3+ + 2Cr^2+ -> Ti^1+ + 2Cr^3+ Has a standard cell potential of E¢ªcell = +1.19V a. Write the two half-cell reactions. b. Labeling all parts and show the direction of flow of electrons. (Place the anode electrode on...
April 15, 2011

physics
While watching ocean waves at the dock of the bay, Otis notices that 13 waves pass beneath him in 32 seconds. He also notices that the crests of successive waves exactly coincide with the posts that are 7 meters apart. What are the period, frequency, wavelength, and speed of ...
April 14, 2011

US Government
How do both Congress and special interest groups compete against the president for control of policy (mainly foreign policy)?
April 13, 2011

math
Luisa and Connor had $360 altogether. after conner gave Luisa 3/5 of his money, she had the same amount of money as he did. how much did conner have in the beginning?
April 12, 2011

English
„that helps us to become“ or „that helps us become“?
April 9, 2011

math
The ratio of the number of postcards john had to the number of postcards Zachary ha d was 4:9. Zachary had 45 more postcards than John. After giving some postcards to John, Zachary had 6/7 as many postcards as John. (A) How many postcards did Zachary have in the beginning? (B...
April 7, 2011

math
Prove eachh mathematical statement for integers m,n,k,p,a,b 12. For every prime p and nonzero n we have n^2 is congruent to nMODp if and only if either n is congruent to 1MODp or n is congruent to 0MODp.
April 6, 2011

Algebra II-Please help!!
Thank you for the explanation-it actually makes sense now
April 4, 2011

Algebra II-Please help!!
Please help-I'm really mixed up How do I find the permutations of the first 12 letters taken 3 at a time? I have a ton of these to do and really don't understand them at all-
April 4, 2011

science
Write a letter to persuade a friend that a change in temperature does not necessarily mean that a chemical change has occured.
April 4, 2011

English - to JJ
If my thesis is Social networking is a powerfull force in modern society. It helps us stay connected with friends, even if we don't show them the 'real' us and it has shaped current events and our views on these events... will my topic be about facebook or myspace...
April 1, 2011

Programming
Write a program to do the following: In main, declare a Player Name Array and a Score Array. Declare the size of the arrays to be 100. In the InputData( ) method, input the player name and score into the arrays for an unknown number of players up to 100. In the ...
April 1, 2011

English
can i get some suggestions what I should write about?
March 31, 2011

English
need help with thesis and topic sentences. Is this a good thesis? Social networking help change the we speak it is daily journals,send invitation to events, and meet new friends.
March 31, 2011

precalc
Assume that this year, n = 1, the average annual salary for women in the United States is $25,000 and that it is increasing by 5% per year, meaning that each year the salary is 1.05 times what it was the previous year. Assume that the average annual salary for men is $30,000 ...
March 30, 2011

chemistry
Hi, I can't figure out how to start this one. I know I need to figure out hte proportions or something of that sort. Any help is greatly appreciated Thanks! Calculate ƒ¢H for the reaction NO(g) + O(g) ¨ NO2(g) given the following: NO(g) + O3(g) &...
March 26, 2011

WRITING SKILLS PART 1
why living in the country is beter than living in the city i think would be more informal.
March 23, 2011

Algebra
Can someone help me factor this problem? Generally I wouldn't have a problem doing it, but today we're supposed to factor problems without knowing what exactly to do, (Trinomial squares, difference of squares, magic diamond, etc), and it's really stumping me. For ...
March 22, 2011

Algebra
I'm probably letting the layout of this problem confuse me but I need help. I need to multiply and express in simplest form: (x-5/2)^3*(1/x-5)^2
March 22, 2011

Algebra
Hi! Today I was absent from my algebra class, and they learned how to recognize and factor the difference of two squares.. I've tried to figure it out from the book, but it's not making any sense... Can someone help? I'm trying to figure out this problem 1 - 4x^2
March 21, 2011

English
thank you Writeacher, Can i get some suggestions what else should I write about?
March 21, 2011

English
Is this a okay paragraph? Can someone help me with it? People write on their wall about their daily life in social networking because people discuss about their life and to conversation with their friends or even people we do not even know. I would go on other people’s ...
March 21, 2011

math
find all numbers that divide 100 with a remainder of 4. what is the largest 2-digit divisor that can divide 100 and still have a remainder of 4? find all #'s that divide 216 with a remainder of 6.
March 17, 2011

math
Hannah biked the following number of miles in four days. How many miles would she need to bike on the fifth day to have a mean of 5.2 miles per day? 6, 3, 4, 3
March 16, 2011

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