Sunday
January 25, 2015

Posts by Anonymous


Total # Posts: 76,645

Phycis
Two kids of mass 10 kg and 15 kg are trying to balance a see saw of total length 6 metres with fulcrum at the centre if one of the kid is sitting aat on end the distance of other from the centre in metres is
January 11, 2015

Calculus
Find all points of extrema on the interval [0, 2pi] if y=x+sinx (-1.-1+(3pi/2)) (pi, pi) (-1,0) ((3pi/2), 0) none of these I got pi as my critical number but I'm confused with the intervals.
January 11, 2015

Calculus
Find dy/dx for 5x^2-2xy+7y^2=0 I'm getting confused with signs.
January 11, 2015

Maths
If you roll a dice 18 times how many 4's would you be expected to get?
January 10, 2015

language arts
The correct answer for the question is B & D.
January 10, 2015

Biology
How do rocks store oxygen, and how did they come to store them?
January 10, 2015

ratio
Jake sold 36 tickets to the school fair, and Jeanne sold 15 tickets. What is the ratio, in simplest form, of the number of tickets Jeanne sold to the number of tickets Jake sold ?
January 10, 2015

ratios
Write three ratios equal to 7/2
January 10, 2015

ratio
Write a ratio for the situation in three ways comparing the first quantity to the second quantity A zoo has 14 monkeys and 18 chimpanzees
January 10, 2015

maths
24 out of 60 pupils lik red. What angel would be used for red on a pie chart?
January 10, 2015

maths
Work out: 2^3 + root 49
January 10, 2015

Physics
A bath toy is floating stationary in water such that half of the toy is above water and half of the toy is below the water. A kid pulls the toy 3.9 cm down into the water and then lets go. The toy then proceeds to bob up and down. It bobs up and down 26 times in a minute. NOTE...
January 10, 2015

Chemistry.
you want a mole ratio. Take the smallest number, .0045, divide it into each of the other moles... O 1 C 2 H 4 C2H4O is the empirical formula, and I would even on this guess structure as CH3OH
January 10, 2015

chemistry
this is what I have is it good: this is the question: Explain how one of the major concepts learned in CHM 111 applies to everyday life. One major concept that was learned in CHM 111 that applies to everyday life is stoichiometry. Stoichiometry is founded on the law of ...
January 10, 2015

chemistry
stoichiometry how does it relate to real life?
January 10, 2015

Physics and Maths
A sphere of uniform density d1 has a radius R. It also consists of a hollow sphere of radius r. the sphere floats slightly on water of density d2. Find r.
January 10, 2015

math
What measures the spread of data?
January 10, 2015

Maths
A is due East of B. What is the bearing of B from A?
January 10, 2015

Maths
The probability of getting heads on a biased coin is 0.6. what is the probability of getting tails on this coin?
January 10, 2015

statistic and probability
There are two independent multiple-choice quizzes where quiz 1 has eight questions and quiz 2 has 15 questions. Each question in the first quiz has four choices and each question in the second quiz has five choices. Suppose a student answers the questions in the quizzes by ...
January 10, 2015

statistik and probability
Two samples of sizes 8 and 10 are drawn from two normally distributed populations having variances 21.8 and 36, respectively. Find the probability that the variance of the first sample is more than twice the variance of the second sample. Interpret its value.
January 10, 2015

Eng225 introduction to film
Which of the following is generally true of the role of actors in movies
January 9, 2015

Chemistry
Answer contains three significant figures. Molarity=moles/Volume (L) Calculate moles of CaCl2, followed by moles of Cl2: [19.6g*(1 mole/110.984g)]=-moles of CaCl2 moles of CaCl2*(2 moles of Cl/1 moles of CaCl2)= moles of Cl moles of Cl/0.500L= molarity of Cl
January 9, 2015

History help!!!
Thanks! can you delete this post?
January 9, 2015

History help!!!
What are the benefits of drilling for crude oil, or petroleum, in the US and Canada?
January 9, 2015

Math
You want to make an investment in a continuously-compounding account over a period of three years. What interest rate is required for your investment to double in that time period? Round the logarithm value and the answer to the nearest tenth. is it 2.3
January 9, 2015

Quick english help
Is it necessary to capitalize colleagues in a sentence?
January 9, 2015

Math
Which of the following is another representation of the polar coordinate -9, -90 degrees? Is it 9,270 degrees
January 9, 2015

Math
Find the quotient of the following expression: 7(cos 5pi/6 +isin 5pi/6) / -2(cos pi/2 +isin pi/2) I got -7/4+ 7 square root 3/4 i. Is this correct?
January 9, 2015

LA - 1 question
B is the correct answer
January 9, 2015

Math
Express -5(cos pi/2 +isin pi/2) in rectangular form. I got -5i. Is this correct?
January 9, 2015

Math
Find the following product -5(cos pi/3 +isinpi/3)*2(cos pi/6+ isin pi/6' I got 10i. is this correct?
January 9, 2015

English
If you are said to have blank, then you are full of energy, or the breath of life. What is the blank?
January 9, 2015

physics
weight of a person in newton on mars who weigh 882N on earth ( g = 9.8m/s^2). weight of person on earth who weighs 333N on mars.
January 9, 2015

physics
weight of a person in newton on mars who weigh 882N on earth ( g = 9.8m/s^2)
January 9, 2015

physics
A vertically hanging bungee cord has a length of 6 m and k = 50N/m. What is the new length of the bungee if a student of mass 40 kg is suspended from the lower end?
January 8, 2015

psychics
physics sorry
January 8, 2015

6TH GRADE MATH
y=11+(15/3) Y=11+5 Y=16
January 8, 2015

Math
How to simplify e^27x?
January 8, 2015

math
The perimeter of a sheet of paper is 38 cm. If the width is 8 cm what is the length of the paper? P = 2L + 2W 38 = 2L + 2(8) 38 = 2L + 16 22 = 2L 11 = L is 11 the answer
January 8, 2015

English (Dracula)
its fine i will ask my teacher
January 8, 2015

English (Dracula)
yes, but it doesnt explain his history in the first few chapters
January 8, 2015

English (Dracula)
i know the answers to the last two questions. But i cant find anything about his history in the first few chapters
January 8, 2015

Pre-Calc/Trig
yes, thanks i can :)
January 8, 2015

Pre-Calc/Trig
Complete the following for each system that involves one or more quadratic equations: Solve the system algebraically 7y^2-5x^2+20x=3 5x^2+21y^2=209
January 8, 2015

math
(√3x-3)-(√x-3)=√x
January 8, 2015

physics
An MRT Train accelerates at a rate of 2.75 m/s^2 from rest for 3.00 seconds.How fast will the train be moving after that time?
January 8, 2015

Physics and Math
The answer is the spring is depressed by 1.6m
January 8, 2015

Physics and Math
The spring is depressed by how much? The answer is 1.6m. But how?
January 8, 2015

Physics and Math
A small ball with a mass of 1 kg rolls down a long frictionless inclined ramp, which is at an angle 3o Degree above the horizon. A linear spring, whose length is not negligible, is attached to the bottom of the ramp. The ball is released from a distance of 1 m above the spring...
January 8, 2015

Algebra
1/(x-5) = 7/2x x = 7?
January 8, 2015

Algebra
Does x(x-7) = 0 have two solutions, 0 and 7?
January 8, 2015

Algebra
1/8 + 2/t = 17/8t Is t = 1 the only solution?
January 8, 2015

ELA
I'd go with B. From the passage, it does not seem like the Jews thought they would stay forever in the ghetto.
January 7, 2015

Chem-Stoich
Thanks, this helped me figure out what I needed to do, I got 0.25% CaCl2
January 7, 2015

math
The perimeter of a sheet of paper is 38 cm. If the width is 8 cm what is the length of the paper?
January 7, 2015

Physical Science
0.04 m/s
January 7, 2015

Math
What is the period of the function? f(x)=sin(1/7)x I think its 2pi
January 7, 2015

Math
Thanks for telling me
January 7, 2015

physics
you can use the idea that the kinetic energy equals the amount of work of friction (Force of friction*d). Use F(force of friction)= (m(v^2))/2d ...so F=(.005*(360^2))/2*.19= 1705.263 N you use .005 because the mass was given in grams and the unit of N is kg*m/s so you have to ...
January 7, 2015

physics
A rifle fires a(n) 5 g bullet with a muzzle velocity of 360 m/s into a block of wood. The bullet comes to rest after it has made a(n)19 cm deep hole in the wood.A rifle fires a(n) 5 g bullet with a muzzle velocity of 360 m/s into a block of wood. The ...
January 7, 2015

Animal Farm
Was Snowball really a criminal, like Napoleon says, or is this just a false accusation?
January 7, 2015

Psychological Statistics
For a population with a mean of 80 and a standard deviation of 12, what is the Z score corresponding to an individual score of 92
January 7, 2015

british lit
how to mark the syllables him still must serve,him still obey
January 7, 2015

math
Sara has 6 necklaces, but her mother will only allow her to wear two at a time. How many different ways can Sara wear two necklaces? A. 30 B. 15 C. 360 D. 12
January 7, 2015

Algebra
For log(4)(3x + 4)^5 = 15, do I have to expand (3x + 4)^5, or is there a faster way?
January 7, 2015

math
Jessica buys a lamp that costs $35 and a table that costs $75.00. If the tax rate is 10%, what will be the total cost of the lamp and table?
January 7, 2015

Math
(x^2(1-x))/((x-1)(2x-3)) Can this be simplified as -x^2/(2x-3)? If so, how?
January 7, 2015

ap chemistry
bruh
January 7, 2015

math
You plan to construct a brick wall measuring 14.5 ft. in length, 5.5 ft. high, and 0.5 ft. in width. If a brick measures 6 in. x 4 in. x 2 in., how many bricks will you need? (Remember to round up.)
January 6, 2015

math
make up a set of at least twelve numbers that have the following landmarks maximum 8 mode 6 range 6 median 5
January 6, 2015

math
a piece of wire is 0.75m long how many pieces of wire 0.5m long, can be cut from it? What is the remaining lenght
January 6, 2015

L.A
Oh okay. I see. Thank you. I just couldn't decide whether it was B or D but it's b. thanks
January 6, 2015

L.A
which of the following is part of the novels rising action? ? A. johnny's growing role delivering messages and acting as a spy for the whigs B. Dr. Warrens imminent surgery on johnnys hand C. The battle on the Lexington green on the morning of April 19, 1775 D. Rabs death ...
January 6, 2015

math
Carrie and Krystal are taking a road trip from Greenville to North Valley . Each person has her own map,and the scales on the map are different. A.On Carrie's map, Greenville and North Valley are 4.5 inches apart.The scale on her map is 1 inch=20 miles. How far is ...
January 6, 2015

science
describe a process that could cause an uncomformity
January 6, 2015

L.A
Thank you for helping!
January 6, 2015

L.A
Choose the meaning that best describes the word in the italics. *pompous is the word thats in italics. His *pompous* behavior irritated his friends, especially since accomplishments were few and far between. A. sheepish B. arrogant C. unassuming D. aggravating is it D..? or B
January 6, 2015

Math
One afternoon, kassims sandwich shop sells 15 sandwiches in 45 minutes. If the shop continues to sell sandwiches at the same rate, about how many sandwiches will the shop sell in 3 hours?
January 6, 2015

LANGUAGE ARTS !! 8TH GRADE
The answers are... 2. a 3. d 4. b 5. c
January 6, 2015

Healthcare
What are some programs in universities if you want to become an endocrinologist
January 6, 2015

math
isn't 39-15 24?
January 6, 2015

math
there are markers every 1000 feet along the side of a road. While driving, Mai passes marker number 15 at 10:05 and marker number 39 at 10:11. find mai's average speed feet per minute. use dimensional analysis to check the reasonableness of your answer.
January 6, 2015

math
if a wall in a 1/4 in. scale drawing is 6 in. tall, how tall is the actual wall? please help
January 6, 2015

ap calc
If y= (e^x-e^-x)/(e^x+e^-x), then y'= Please help i know how to get the derivative i just can not simplify.
January 6, 2015

math
Problem- Ms.Kelly puts more than 5 apples in each bag. Write an inequality to represent the number of apples in a bag. My questions- would it be n>5?
January 6, 2015

math
This table shows the numbers of students in different classes that are in the math club. Students in math club Boys / Girls Mrs.Smith 3 / 4 Ms.Jones 4 / 6 Mr.Brown 3 / 4 a. What fraction of the students in the math club are boys from Mrs. Smith’s class? b. What fraction ...
January 6, 2015

Physics
tarzan, mass 85 kg, swings from a tree on the end of a 20. m vine his feet touch the ground 4.0m below the tree. how fats was he moving when he reaches the ground
January 6, 2015

Math
((2x)/(x-1)) - (9/(x-2)) Is the answer (2x^2 - 13x + 9)/(x^2 - 3x + 2), or can it be simplified further? I got an answer to this question before, but it seems like they did it with 9x instead of 9.
January 6, 2015

Physics
A lunar lander in powered descent at 100 m above the surface of the moon slows down from a velocity of 20 m/s to 0.5 m/s at constant acceleration. Assume that the lander has a mass of 20,000 kg and that burning the fuel does not change the mass. Answer the following questions...
January 6, 2015

Health
What are some things in a house that increase risk of poisoning?
January 6, 2015

French
Does ne + avons equal n'avons?
January 6, 2015

Algebra PLEASE?
All you need to do to get an irrational is take the square root of a number that is not a perfect square. None of the numbers are perfect squares. After you do that you can do any closed operation you want with the resulting irrational and the two other rationals and you will...
January 6, 2015

math
Ms.Sue is right, the next 3 would be 0.93,1.02, and 1.11
January 6, 2015

Language arts
The rising action of a plot is the series of events that build up and create tension and suspense. so, it would be b or d
January 6, 2015

math
$12.07
January 6, 2015

Math
It is 9, not 9x.
January 6, 2015

Math
((2x)/(x-1)) - (9/(x-2)) Is the answer (2x^2 - 13x + 9)/(x^2 - 3x + 2), or can it be simplified further?
January 6, 2015

Math
2/(x + 4) + x/(x - 3) Is the answer (x^2 + 6x - 6)/(x^2 + x - 12), or can this be simplified further?
January 6, 2015

Civics
I think it is C
January 5, 2015

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