Tuesday
September 30, 2014

Posts by SARA


Total # Posts: 3,671

Pre-Calculus
For what values of x is it true that |sin(x)-x| < 0.01?
January 17, 2011

Social Studies
how are blogs similar and different from journalism?
January 16, 2011

german
Oh wow. How long have you been taking German as a class? You just need to study. Even watch a German movie that has English subtitles and pay close attention. Write down vocabulary from your textbook and take notes if you have a class and Google "How to learn German,"...
January 16, 2011

Physics
Tyler is standing at the 10-yard line waiting to catch the initial kick-off. The .75 kg football experiences a change in velocity of 12 m/s in .17 s when caught by Tyler. What force does Tyler apply on the football?
January 16, 2011

Physics
A 3 kg cart is moving along when it strikes a 2 kg cart (initially at rest). The velocity of the two-cart combination after the collision is 4 m/s. Calculate the velocity of the 3 kg cart before the collision.
January 16, 2011

Physics
Joe is sledding down a snow hill when he collides with Mike half way down the hill. Joe and the sled have a mass of 65 kg and their velocity before the collision was 12 m/s. If Mike has a mass of 55 kg, what velocity would Joe, Mike, and the sled have after the collision?
January 16, 2011

History
What do you think about what I wrote? Please give me feedback! And what grade would you give it? (This homework question was removed due to a copyright claim submitted by K12 Inc.) My answer: The biggest art movement that came out of World War One was the Dada movement. The ...
January 14, 2011

World History
Thank you so much! I wrote my paragraph and it was easy thanks to you! :D
January 14, 2011

World History
I needed someone to explain to me your answer to my question so I can write a paragraph on it. Please don't give me a Wikipedia link, I need someone to actually explain this to me without just saying, "go here". I really appreciate you going through to the work ...
January 14, 2011

World History
Explain how totalitarian rulers were able to acquire power during the 1930s. Describe at least two specific totalitarian leaders, the conditions in their countries that played a part in their rise to power, and the way they used those conditions to gain power.
January 14, 2011

acounting
TEST XQ's Software Development Division (SDD) has developed several architectural design software packages. One software package that they have developed is being sold to English Company for $250,000 or 325,000 pounds. The cost of developing the software was $195,000. As ...
January 14, 2011

Health
is it bad to do the same kind of sit ups every night?
January 13, 2011

Physics
Actually 100 years is a century
January 12, 2011

Advanced Functions
he value of a new car depreciates at a rate of 12% per year. Write an equation to represent the approximate value of a car purchased for $23 000. Determine the value of the car two years after it is purchased. Approximately how many years will it take until the car is worth $...
January 12, 2011

Physics
A frictionless roller coaster is given an ini- andros (saa2652) – Energy II – dewey – (339113) 2 tial velocity of v0 at height h = 13 m . The radius of curvature of the track at point A is R = 39 m.
January 10, 2011

social studies
What are the failures of the UN organization -World meteoroligcal organization(WMO)
January 9, 2011

Physics
I got it the answer is 9.5 cm underwater
December 16, 2010

Physics
One cm of a 10-cm-long rod is made of metal, and the rest is wood. The metal has a density of 5000 kg/m3 and the wood has a density of 500 kg/m3. When the rod is set into pure water, the metal part points downward. How much of the rod is underwater?
December 16, 2010

algebra
Simplify: (3x^0 y^-4)(2x^2 y)^3 I got 24x^6 / y am I right?
December 14, 2010

algebra
okay thanks :)
December 14, 2010

algebra
simplify (5x-4)^2 I got 25x^2 -16 is that right?
December 14, 2010

Pre-Calculus
or maybe the answer is: y=2xy but that's kind of weird
December 13, 2010

Pre-Calculus
translate this polar equation into a rectangular form: rsin(2theta)=sin(theta) My answer: r2sin(theta)cos(theta)=sin(theta) 2rcos(theta)=1 2x=1 x=1/2 This is the only answer I can get and someone told me it's wrong. Would someone please help me with this
December 13, 2010

com
Write three sentence using plurals correctly and three sentences using possessives correctly on the topic of how to store personal financial information effectively and efficiently.
December 11, 2010

Ms. Sue
Thanks
December 11, 2010

Ms. Sue
Ms. Sue could I please recieve ur help on my homework. I have to do a presentation and Its a media project which I have to represent, its on the Freedom Writers- the book, and two media clips. The media clips are Hannas suitcase and Paperclips. I also got a quote as well which...
December 11, 2010

circle geometry triangles
Jacob drew the scalene triangle shown. What must he know to correctly draw this triangle?
December 11, 2010

can you please check my answers
I'm working on this for my current studies and found these answers from the first 2 chapters and some research online. 1) C 2) B 3) D 4) A 5) 6) A 7) A 8) 9) D 10) 11) 12) A 13) C 14-18) 19) C 20) B The reason I say D for 3 is because it says right in my text that the ...
December 11, 2010

College Physics
Four masses are positioned at the corners of a rectangle, as indicated in the figure below (not to scale). x 1kg------2kg | | | |y 3kg------4kg (a)Find the MAGNITUDE and DIRECTION of the net force acting on the 2.0 kg mass if x = 0.20 m and y = 0.11 m. (b)How do your answers ...
December 10, 2010

Pre Calc
f(x,y)=ln(5x^2-7y^3) Find ALL 2nd derivatives. fxx,fxy,fyx,fyy
December 10, 2010

social studies
no problem!
December 10, 2010

social studies
okay thanks I found it, it's C.
December 10, 2010

social studies
Between 1850 and 1950 the productivity of the average American farm worker: A. declined B. remained about the same C. doubled D. quadrupled I'm unsure which choice to choose? helpp
December 10, 2010

Physics - Mechanics and Ocsillatory Motion
Suppose that each of the three masses in the figure below has a mass of 5.05 kg, a radius of 0.0679 m, and are separated by a distance of 9.9 m. If the balls are released from rest, what speed will they have when they collide at the center of the triangle? Ignore gravitational...
December 9, 2010

Spanish
i have that i want to be a cook, and i have that i like to work in a kitchen and that i love to prepare meals. and i said im creaitve and artistic and a good cook. but i dont know what else to say because our teacher said it has to be really long
December 7, 2010

Spanish
you are preparing for a job interview for your dream profession. the job application asks you to write a paragraph eh espanol discussing the following things. please explain why you are interested in this profession, what activities will you do on a daily basis having this ...
December 7, 2010

7th grade
how do you convert 35ibs per minutes to ibs per hour?
December 6, 2010

6th grade
what is 30 1/4-29 1/3
December 6, 2010

Chemistry
Thank you for the help
December 6, 2010

Chemistry
Diethyl ether has a boiling point of 34.5C, and 1-butanol has a boiling point of 117C. Both of these compounds have the same numbers and types of atoms. Explain the difference in their boiling points. The answer I found was that: only 1-butanol can form hydrogen bonds. But I ...
December 6, 2010

Chemistry
Thank you. That helped a lot.
December 6, 2010

Chemistry
Which of the following gases would you keep in an outdoor storage tank in winter? Explain why. methane(CH4), Propane(C3H8), or butane(C4H10)
December 6, 2010

Math
a 52g. weight tied to a spring stretches the spring 1.3cm. How many grams would it take to stretch the spring 3cm?
December 5, 2010

Math
A public opinion poll found that 5 out of 8 people in a community wanted a exercise course. if there are 10,000 people in a community, how many do NOT want a exercise course?
December 5, 2010

sociology
I have the same question, going to Rasmussen College in St. Cloud, MN and I am confused as hell. How did you all do on your assignment??
December 3, 2010

Chemistry
An aqueous solution of H2SO4 is 60.0 % H2SO4 by mass. The density of the solution is 0.968 g/mL . I need to find the Molality, mole fraction, and Molarity.
December 3, 2010

Chemistry
I think I got the answer. Molar Mass = 119 g/mol Molecular formula is the same = C6H5P
December 3, 2010

Chemistry
A solution of 2.50 g of a compound having the empirical formula C6H5P in 25.0 g of benzene(C6H6) is observed to freeze at 4.3 degrees C. Calculate the molar mass of the solute and its molecular formula.
December 3, 2010

algebra
Solve for x: (-1/3)(-4+3x)=1/2
December 2, 2010

Chemistry
The solubility of CO2 in water at 25 degrees C and 1 atm is 0.034 mol/L. What is its solubility under atmospheric conditions? (The partial pressure of CO2 in air is 0.0003 atm.) Assume that CO2 obeys Henry's law. My Answer: 1.02 x 10^-5 mol/L
December 2, 2010

math
1 ft = 1/3 yd 7 yd - 3 1/3 yd = 3 2/3 yd or = 11/3 yd or = 3.67 yd
December 2, 2010

Chemistry
I think I got the answer. Can some please check it. Molarity = 17.3 mol/L = 17.3 M Molality = 25.1 mol/kg = 25.1 m
December 2, 2010

Chemistry
Calculate the molarity and the molality of an NH3 solution made up of 30 g of NH3 in 70 g of water. The density of the solution is 0.982 g/ml. Molar Mass of NH3 = 17.04 g
December 2, 2010

algebra
Need second method
December 1, 2010

US history
What propelled Grant to Presidential victory in the 1868 election?
December 1, 2010

child care
1.When properly executed, the behavior management strategy known as time-out becomes(a) A. a positive reinforcer. B. more effective than logical consequences. C. a conversation between child and adult. D. suitable punishment for misbehavior. 2. Which of the following ...
December 1, 2010

stats
You are given the following information obtained from a random sample of 4 observations. 25 47 32 56 At a .05 level of significance, determine whether or not the mean of the population from which this sample was taken is significantly different from 48. (Assume the population ...
December 1, 2010

College Physics
Rather than rotate completely horizontally, a carousel rotates at an angle of 10° from horizontal, with a constant angular velocity of 1.571 RAD/s. A box is placed 1.5 m from the axis of rotation. What’s the minimum coefficient of static friction so the box will not ...
December 1, 2010

Physics
Rather than rotate completely horizontally, a carousel rotates at an angle of 10° from horizontal, with a constant angular velocity of 1.571 RAD/s. A box is placed 1.5 m from the axis of rotation. What’s the minimum coefficient of static friction so the box will not ...
December 1, 2010

math
$5.33
November 30, 2010

child care
is a social group consisting of people who are equal in such respects as age, education or social class
November 30, 2010

child care
iam not sure
November 30, 2010

child care
the question i think is a
November 30, 2010

child care
i dont really understand this
November 30, 2010

child care
one of the most important functions of a childs peer group is a. serving as a replacement for the parents. b.providing opprtunities for competition. c. fostering love and understanding. d. teaching about the world outside the family.
November 30, 2010

childcare
when working with special needs/learning disabled children,caregivers should a.provide positive role models for them. b. ignore their disabilities. c. try to do as much as possible for them. d. instruct other children to disregard them. i think is a
November 30, 2010

childcare
an appropriate science activity for an infant would be: a. weighing and measuring other infants. b. planting a flower. c.feeling different textured objects. d.caring for pets of the facility.
November 30, 2010

child care
i think is c?
November 30, 2010

child care
a. be directed to lower age-level activities b. have little interaction with others. c. be directed to appropriate age-level and developmental activities. d, have stricter discipline.
November 30, 2010

child care
children with special needs should
November 30, 2010

child care
the goal of thomas behavior appears to be
November 30, 2010

Calculus
The amount A in grams of radioactive plutonium remaining in a 20-gram sample after t days is given by the formula A=20*(1/2)^(t/140). At what rate is the plutonium decaying when t=2 days?
November 30, 2010

algebra 2 multiple choice HELP
ahh thanks!
November 30, 2010

algebra 2 multiple choice HELP
or C?
November 30, 2010

algebra 2 multiple choice HELP
I'm not sure, A??
November 30, 2010

algebra 2 multiple choice HELP
find f(a), if f(t) = 2t2(squared)-t-2 A. 2(a+t)2(squared)-2t+1-2 B. 2(t+a)2(squared)-2(t+a)-2 C. 2a2(squared)-a-2 D. 4a2(squared)-2a-2 I put (squared) because the two in front of it means it's being squared... please help. thanks!
November 30, 2010

algebra 2
thanks
November 29, 2010

algebra 2
anyonee??
November 29, 2010

algebra 2
solve the inequality: 3|m-4|>6 A. [m|2<m<6] B. [m|<2 or m>6] C. [m|m<1 or m>7] D. all real numbers
November 29, 2010

algebra 2
okay thanks!!
November 29, 2010

algebra 2
solve the inequality: -2<4z+10≤12
November 29, 2010

algebra
Solve the inequality : -3(r-11)+15≥9 a. [r|r≤13] b. [r|r≥13] C. [r|r≤-13] D. [r|r≥-13]
November 29, 2010

algebra 2
woww..
November 29, 2010

algebra 2
Solve the inequality : -3(r-11)+15≥9
November 29, 2010

Physics
and what about the spring scale? is it apparent weight = actual weight - densitywater*g*V ?
November 28, 2010

Physics
A beaker of mass 1.2 kg containing 2.1 kg of water rests on a scale. A 2.2 kg block of aluminum (of density 2700 kg/m3) suspended from a spring scale is submerged in the water. Find the reading of the upper scale (the spring scale). The acceleration of gravity is 9.81 m/s2 . ...
November 28, 2010

geometry
Two chords intersect a circle. The shorter chord is divided into segments of lengths of 9 inches and 12 inches. The longer chord has a length of 24 inches. Find the length of the shorter portion of the longer chord .
November 24, 2010

history
1. Free elections in Poland: A. were not very significant B. demonstrated clearly that the Cold War was ending. C. showed that Solidarity was not really all that influential and that people would not turn their back on Communist government. D. were rigged as demonstrated by ...
November 24, 2010

letter to the supermarket
Write a letter to the supermarket manager explaining what has happened. Tell the manager how you feel about the error and ask him to some this about it.
November 22, 2010

letter to the bank
Write a letter to the bank explaining what have happened and say that you would live to do about it
November 22, 2010

history
What obstacles lay in the way of Southern industrialization after the Civil War?
November 21, 2010

history
thanks:-)
November 20, 2010

history
1. Nixon's policy regarding Vietnam was: a. very popular. b. becoming very unpopular, particularly among Senators. c. becoming increasingly unpopular among ordinary voters, but the president and Congress generally ignored these concerns. I'm undecided between choices B...
November 20, 2010

English
Can some one proof read my short essay for gramatical errors, or just the anything in general. heres the question i am answering: Popular media from magazines to movies to television offer images, stories, and information that influence our prejudices and how we think about ...
November 20, 2010

Physics
The 1.4 kg, 40-cm-diameter disk in the figure below is spinning at 260 rpm. How much friction force must the brake apply to the rim to bring the disk to a halt in 4.5 s?
November 18, 2010

algebra
what is (9,7) with a slope of 3 be in point-slope form?
November 16, 2010

math
not math its like algebra or calculus or something please change subject name
November 16, 2010

Calculus
Oh, I am sorry! I had my calculator on radian mode instead of degree mode. Silly me. Thanks so much for the help! I think I have managed to do the remainder of the problem, except for part E. How would I be able to tell if that function were differentiable or not?
November 12, 2010

Calculus
I'm having a little trouble with this problem...it would be great if you could point out where I'm going wrong. Hours of Daylight as a Function of Latitude. Let S(x) be the number of sunlight hours on a cloudless June 21st, as a function of latitude, x, measured in ...
November 12, 2010

Physics - Mechanics and Ocsillatory Motion
An 8.70 kg block slides with an initial speed of 1.56 m/s up a ramp inclined at an angle of 28.4 with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.62. Use energy conservation to find the distance the block slides before coming to rest...
November 10, 2010

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