Wednesday
March 29, 2017

# Posts by Samantha

Total # Posts: 1,675

Science
I need help with coming up a hypothesis for and Organic Compound lab! Anyone have an idea?
October 24, 2012

physics
Block 1, of mass1 = 0.550kg , is connected over an ideal (massless and frictionless) pulley to block 2, of mass2 , as shown. For an angle of = 30.0 and a coefficient of kinetic friction between block 2 and the plane of = 0.300mu(kinetic friction), an acceleration of magnitude...
October 23, 2012

Spanish Beg. 1 - help!
¿Cómo te llamas? = literally means How are you called? Or What's your name? (Most common) ¿Cuál es tu nombre? = What is your name? Me llamo Samantha = I am Samantha Yo soy Samantha = I am Samantha Mi nombre es Samantha = My name is Samantha
October 22, 2012

i need help ss
1.D 2.b 3.b 4.c
October 20, 2012

social studys
1. D 2. B 3. B 4. C
October 20, 2012

Math
Suppose C(x) measures an economy's personal consumption expenditure and x the personal income, both in billions of dollars. Then the following function measures the economy's savings corresponding to an income of x billion dollars. S(x) = x - C(x) (Income minus ...
October 19, 2012

math
The weekly demand for the Pulsar 25 color LED television is represented by p, where p denotes the wholesale unit price in dollars and x denotes the quantity demanded. The weekly total cost function associated with manufacturing the Pulsar 25 is given by C(x), where C(x) ...
October 19, 2012

earth
The global-mean surface temperature of the earth is about 288 degrees Kelvin. Use the Stefan-Boltzman law to calculate the radiative flux corresponding to an object with this temperature. [hint: use σT4 with σ = 5.67x10-8 Wm-2K-4 ]
October 15, 2012

chemistry
In a bunsen burner experiment, when you place a piece of soot covered chalk over the hottest part of the flame, it changes back to a white color. What is the equation for this process? Thank you
October 10, 2012

why do the Lina and Doon think tat their arrival has been expected, in the book CITY OF EMBER
October 10, 2012

Chemistry
if there are 8.3grams of Mg used, how many moles of MgO can you expect to be produced?
October 3, 2012

DEBATE
How would you present a uniqueness, link,or impact in a policy debate? Someone told me that during the cross examination period. You are supposed to ask a question and once receive the answer you are given permission to add the link but, i forgot how the question was stated. ...
October 1, 2012

Biology
1. How is both the external and internal stimuli involved in doing this: You are hungry so you reach for an apple in a fruit bowl. 2. Why is a hypothesis important to controlled experiments? Is it becasue you are trying to explain the effect that it would have to a substance ...
September 27, 2012

math
How many People answered this question so far and plus I agree
September 24, 2012

Physics
Your car can accelerate at 5m/^2 without a trailer. You add a trailer to your car that has 3 times the mass of your car. At what rate can your car (plus trailer) accelerate now? After accelerating the car travels at a constant speed of 30 m/s. What is the net force acting on it?
September 23, 2012

health
in through nose out through mouth
September 22, 2012

chemistry
4. All of these
September 19, 2012

You buy a car in 2005 for \$7860 and it depreciates linearly. You sell the car for \$5040 in 2011.... what does the domain represent in the function? what does the range represent in this function? what is the slope of the linear representation? what is the function that models ...
September 18, 2012

You buy a car in 2005 for \$7860 and it depreciates linearly. You sell the car for \$5040 in 2011.... what does the domain represent in the function? what does the range represent in this function? what is the slope of the linear representation? what is the function that models ...
September 18, 2012

Math
Ms. Sue I got \$45 dollars I multiplied 15 x 3 = 45
September 12, 2012

Math
Restaurants charge about 3 times the cost of food for items on the menu. A restaurant pays \$7 per pound for fish, \$2 for a dozen lemons, and \$6 for parsley. If 2 fish dinners can be made from this, how much would this meal costs? My answer is \$36
September 12, 2012

General
Not much I'm in 10th grade...And have access to a college lab with a teacher that is willing to guide me through
September 6, 2012

General
This is a question to everybody: I was just wondering if anyone had any science related questions or things they wonder about that may require experiments. If you have any ideas please mention them. I need this for a science for a science fair project and have at most a 6 ...
September 6, 2012

algebra
1/7x-x=-1/7(2x+84)
September 5, 2012

Chem
What is measured in carats
September 4, 2012

algebra
Find the inverse of the following function. Find the domain, range, and asymptotes of each function. Graph both functions on the same coordinate plane -x/3 f(x)=4+e ( if this makes sense, not sure how else to show it. the -x/3 is after the e like -x/3 to the power of e) please...
August 28, 2012

college algebra
Find the inverse of the following function. Find the domain, range, and asymptotes of each function. Graph both functions on the same coordinate plane f(x)=4+e^-x/3 please help me! show steps also, if i an just given an answer that wont help me! thanks in advance!!!
August 28, 2012

Math
First I factor 54. 5 4 | | 9 6 |\ \ \ 3 3 3 2 {3 3 3} group of threes that can be out of cubed root Because there are three threes I take them out of the cubed root (# = im going to consider this as my cubed root button) turning #54x^17 into 3#2x^17 Now we factor x^17: there ...
August 23, 2012

math
f(x)=-2x3+20x2-48x =(?)(-2x)(X-6) how do I find the missing factor of this?
August 19, 2012

math
How did you turn 5/6 to 1/6
August 14, 2012

Politics/Debate
thank you so much for today and yesterday
August 10, 2012

Politics/Debate
are there some important things about domestic infrastructure we should worry or know about? How does demestic infrastructure help us in a positive way and also in a negative way? why would someone negate the substantial increase in development for domestic infrastructure? ...
August 10, 2012

Politics/Debate
what does this sentence mean in regular english "The United States Federal Government should substantially increase development of domestic infrastructure." and what is the basic meaning of domestic infrastructure? Tahnk you soo much in advance!!
August 9, 2012

college statistic
A sample of 51 night-school students' ages is obtained in order to estimate the mean age of night-school students. x = 26 years. The population variance is 19. (a) Give a point estimate for μ. (Give your answer correct to one decimal place.) (b) Find the 95% ...
July 23, 2012

college
Consider a normal population with μ = 36 and σ = 4.9. Calculate the z-score for an x of 47.6 from a sample of size 14. (Give your answer correct to two decimal places.)
July 23, 2012

John jay college
A random sample of n = 9 scores is obtained from a population with μ = 50 and σ = 9. If the sample mean is M = 59, what is the z-score corresponding to the sample mean? z = 3.00 z = 1.00     z = 9.00 cannot determine without additional information
July 22, 2012

John jay college
A random sample of n = 9 scores is obtained from a population with μ = 50 and σ = 9. If the sample mean is M = 59, what is the z-score corresponding to the sample mean?
July 22, 2012

college math
The ratio of soda to diet soda in Bill's Supermarket is 8 to 9. If a person counted 72 bottles of soda, how many bottles of diet soda are there?
July 19, 2012

Personal Finance
During a job interview Pam Thompson is offered a salary of \$2800. The company gives annual raises of 6 percent. What would be Pams salery during her 5th year on the job?
July 15, 2012

Math
The average (arithmetic mean) and median of the five numbers a,a,b,c, and c are 20 and 30, respectively. If a < b < c, what is the value of a + c?
July 11, 2012

Math
If it takes 6 minutes to travel from point A to point B at a constant speed of 60 miles per hour, how many minutes does it take to travel the same route from point A to point B at a constant speed of 50 miles per hour?
July 11, 2012

Math
f(x) = (1/3)x the fraction one third x
July 11, 2012

Math
f(x) = 1/3x + 3 and g(x) = x - 2 The functions f and g above are defined for all values of x. In the xy-plane, what is the y-coordinate of the point of intersection of the graphs of f and g?
July 11, 2012

Math
if (a^6 x a^6)^k = (a^3)^(k+5), solve for k
July 11, 2012

Math
At a company, there are y more male employees than female employees. If there are x male employees at the company, what fraction of the employees are male, in terms of y and x?
July 11, 2012

english
Snow skiing is a very exciting sport. what type if sentence pattern is this? S-v,s-v-io, s-v-io-do,e-v-s,s-lv-pn,s-lv-pa, s-v-do-oc, question pattern
July 10, 2012

math
Solve the following problem. Round answer to two decimal places when necessary. I=240 W=1/3 A=1*W A=
July 2, 2012

Management
Critical thinking is very important in making decisions that impact an organization’s growth and survival. Which of the following traits of a critical thinker is essential in this process?
June 8, 2012

science
what do you call a river or stream that runs or flows really fast?
June 7, 2012

chemistry
what mass of acetylene, C2H2, will be produced from the reaction of 90 g of calcium carbide, CaC2, with water in the following reaction? CaC2+2H2O-->C2H2+Ca(OH)2
May 28, 2012

Chemistry
An etheral solution contains benzoic acid, 9-fluorenone, abd ethyl 4-aminobenzoate. Why would benzoic acid and 9-fluorenone not be extracted from this etheral solution by aqueous HCl ?
May 15, 2012

algerbra 2
What did the baby pocupine say when it backed into a cactus?
May 13, 2012

computers
Imagine that you have been hired as an IT consultant and have been asked to write a recommendation for an OS. This start-up company primarily develops games and has approached you to recommend an OS for its 25 employees who use desktop PCs. The primary purpose of the desktops ...
May 10, 2012

algebra 2
Solve the inequality (x-3)/(2x+1)>0
May 2, 2012

Math
There are 40 tags numbered one through 40 in a bag. What is the propability that Glen will randomly pick a multiple of 5 and then a multiple of 9 without replacing the first tag?
May 1, 2012

Algebra 1
1. 5x + 9 = 3x + 1 2. 14 + 7n = 14n + 28 3. 22(g  1) = 2g + 8 4. d + 12  3d = 5d  6 5. 4(m  2) = 2(3m + 3) 6.  (4y  8) = 2(y + 4) 7. 5a  2(4a + 5) = 7a 8. 11w + 2(3w  1) = 15w 9. 4(...
April 28, 2012

Science
Changing the current changes the ___ of an electromagnet. Choices are: A. strength B. direction C. charge D. both a and b
April 17, 2012

Math
I need help trying to write out these binomial expansions: they all need to be raised to the 8th power. Thanks 1. (x + y) 2. (w + z) 3. (x - y) 4. (2a + 3b) - Now explain how your answer for #1 could be used as a formula to help you answer each of the other items. In each case...
April 16, 2012

Chemistry
I need help with this in order to correctly complete my other related problems. Thank you so much in advance =) Arrange the following 0.1 M solutions in order of increasing pH and state why you placed each solution in that position: NaCH3COO, HCl, HCN, NaOH, NH3, NaCN, KNO3, ...
April 15, 2012

Chemistry
I need help with this in order to correctly complete my other related problems. Thank you so much in advance =) Arrange the following 0.1 M solutions in order of increasing pH and state why you placed each solution in that position: NaCH3COO, HCl, HCN, NaOH, NH3, NaCN, KNO3, ...
April 15, 2012

History
Q: Which governmental position was NOT held by James F. Byrnes? Choices are: A. U.S. Secretary of State B. U.S. Supreme Court justice C. governor of South Carolina D. vice president of the United States
April 15, 2012

History
Q: What action did the United States NOT take against Japan before the attack on Pearl Harbor? Choices are: A. cut off the sale of oil and metal to Japan B. sent the Japanese ambassador back to Japan C. froze all the Japanese assets in the United States D. discontinued ...
April 15, 2012

MATH
What is the sum of (x^2-3x+2) and (5x^2-3x-8)? show your work help me!!!
April 15, 2012

math
Two prisms are similar. The surface area of one is four times the surface area of the other. What is the ratio of the corresponding dimensions?
April 13, 2012

math
A snailis trying to climb up a cup left by some students that littered.Each hour the snail slithers up 2`` but when he is tired he sleeps and slides 1``. How many hours until he reaches the top of the cup with a height of 10 is this an integer question?
April 12, 2012

math patterning
Look over the following sequence of numbers. What are the next 3 numbers in the pattern?what is the pattern rule? -1,0,1,0,1,2,3,6,11,20,37
April 12, 2012

Algrebra
I need to find the approximate surface area of a cone with the R=5 and L=6. I thought I figured it out by 3.14(5)(6) which will give me 94.2 I then would take 94.2 +3.14(5)squared and I came up with 172.7, but my answer should be either 20m squared, 98m squared, 118m squared ...
April 9, 2012

Calculus
Let L1 be the line with the vector equation r= (-2,3) +s(-1,3), seR. Let L2 be with the line with parametric equation x=3t+2, y=t-7, teR. Are L1 and L2 perpendicular? How do you know?
April 8, 2012

Western experience
Oops I meant c.
April 3, 2012

Western experience
I was thinking D by the way because calculating technology doesnt have much to do with communication
April 3, 2012

Western experience
All of the following are late-twentieth century technological developments that have revolutionized communication except A) development of the world wide web B) development of the personal computer C) development of calculating machinery D) development of the microchip E) ...
April 3, 2012

biology
I have the fetal pig test on muscles in AP biology class coming up soon. And I was wondering if anyone knows any good online sites where thye give pictures and i can practice labeling the muscles on the pig.. thanks
April 1, 2012

actually that is the kind of way i did it. I almost did 2 experiments on a total of 150 people. Thanks anyway
March 31, 2012

thank you
March 31, 2012

Hi, I'm doing a science fair and they're asking us to put pictures of us doing experiments or to bring in a model. In my project I experimented on people so was I supposed to take pictures of people performing the tasks? I already did the project and experiments and ...
March 31, 2012

science fair
Hi, I'm doing a science fair and they're asking us to put pictures of us doing experiments or to bring in a model. In my project I experimented on people so was I supposed to take pictures of people performing the tasks? I already did the project and experiments and ...
March 31, 2012

History
Why was South Carolina placed under military control? I think it is because it refused to ratify the 13th Amendment, but I am not sure.
March 28, 2012

Algebra
If a football field's length is 120 yds. and its width is 53 1/3 yards and a soccer field's lenght is 130 yds and its width is 100 yards how many times the area of the small field is the area of the larger field? I multiplied the length x width and got 6,400 for area ...
March 28, 2012

physical science
absolute zero is the same as
March 27, 2012

physics
normally warms up faster when heat is applied
March 27, 2012

fun facts
what are some fun facts on multitasking? if not that what are some websites to find good fun facts
March 25, 2012

science fair
in my science fair report school layout they want us to write a paragraph on testing my hypothesis and before that they asked us to write procedure. i wrote the procedure now do i rewrite it for testing my hypothesis?
March 25, 2012

science fair
in my science fair report school layout they want us to write a paragraph on testing my hypothesis and before that they asked us to write the procedure. i wrote the procedure now do i rewrite it for testing my hypothesis? or do i write something else
March 25, 2012

science fair
in my science fair report school layout they want us to write a paragraph on testing my hypothesis and before that they asked us to write the procedure. i wrote the procedure now do i rewrite it for testing my hypothesis? or do i write something else
March 25, 2012

Math
1. Simplify, and write in the base of 3: (9^x . 3^4x)^2 answer: 3^12x 2. Differentiate and simplify a. y= 3x^4 - 4e^x + 8 answer: 4(3x^3 - e^x) b. y= (3 + 4e^x)^5 answer: 20e^x (3+ 4ex)^4 c. y= (e^x - 1) / x^2 answer: (xe^x - 2e^x +2) / x^3
March 24, 2012

Algebra
triangular prism with base perimeter 24 cm, base area 24 cm^2, and height 15 cm. Choices are: A. 606 cm^2 B. 384 cm^2 C. 408 cm^2 D. 87 cm^2
March 19, 2012

Algebra
rectangular prism with base perimeter 30 cm, base area 50 cm^2, and height 150 cm. Choices are: A. 7,560 cm^2 B. 4,600 cm^2 C. 1,800 cm^2 D. 4,550 cm^2
March 19, 2012

Finance
Spam Corp. is financed entirely by common stock and has a beta of 1.0. The firm is expected to generate a level, perpetual stream of earnings and dividends. The stock has a price-earnings ratio of 8 and a cost of equity of 12.5%. The company's stock is selling for \$50. Now...
March 17, 2012

Q. Find the minimum value of Q=x^2y subject to the constraint 2x^2+4xy=294. Its the derivative method.
March 15, 2012

physics
A brick of mass 0,5 kg possesses 100J of gravitational potential energy when held at a certain height above the ground.How long will it take to reach the ground when it is released?
March 15, 2012

statistics
assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 20. find the probability that a randomly selected adult has an IQ less than 20.
March 14, 2012

statistics
a statistics professor plans classes so carefully that the lenghts of her classes are uniformly distributed between 46.0 and 56.0 minutes. find the probability that a given class period runs less than 50.5 minutes
March 14, 2012

Algebra
whats c?
March 14, 2012

Algebra
A fish pond at the local park is a regular hexagon. a. Write a formula for the perimeter of the pond in terms of the length of a side. Explain your formula. b. Each side has a length of 7.5 feet. Find the perimeter of the pond. c. Suppose the designer of the pond wants to make...
March 14, 2012

Science
Which of the following materials will burn the fastest in open air? A. a log, two feet in diameter B. two logs, each one foot in diameter C. a pile of small splinters made from a two-foot diameter log D. Both logs and the splinters will burn at the same rate.
March 12, 2012

English Literature
Can anyone explain how expatriate Americans and native Europeans viewed America after WWI.
March 8, 2012

Science
Which of the following materials will burn the fastest in open air? A. a log, two feet in diameter B. two logs, each one foot in diameter C. a pile of small splinters made from a two-foot diameter log D. Both logs and the splinters will burn at the same rate.
March 8, 2012

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