Friday
February 5, 2016

# Posts by courtney

Total # Posts: 743

psychology
The longest period of time during prenatal development is the -Period of the fetus - Third Trimester - Period of the embryo - Germinal Stage - Period of the zygote I believe the answer is period of the fetus.
November 24, 2008

psychology
How many phonemes are in the word football? -two -eight -five -six -four I think the answer is four but everyone that I talk to has a different answer. It's driving me crazy no one knows who's right!!
November 24, 2008

novel
After the death of Curly in The Call of the Wild, Buck concludes that no fair play exists in his world and that he will never go down in a fight. The theme illustrated here is apparently derived from London's interpretation of
November 18, 2008

the short story, part 2
After the death of Curly in The Call of the Wild, Buck concludes that no fair play exists in his world and that he will never go down in a fight. The theme illustrated here is apparently derived from London's interpretation of
November 13, 2008

the short story, part 2
In "Young Goodman Brown," the allegorical meaning of Faith's pink ribbons is
November 13, 2008

math
Calculus Question: Find the derivative of this function: g(x)=ln(ln(x+1))+e^(x^(3/2)+(x/3)) Teacher didn't show how to do a problem like this and my book doesn't show anything like it either. Any help with this will be greatly appreciated.
November 7, 2008

English
I need to think of some expressions or idioms involving Mexico, along the lines of "spice it up" "south of the border" or anything else anyone can think of. Gracias!!
October 29, 2008

english
I need to think of some expressions or idioms involving Mexico, along the lines of "spice it up" "south of the border" or anything else anyone can think of. Gracias!!
October 29, 2008

Collge Algebra
i do know that it is the b + or - the square root of b squared -4ac over 2a but I still can't get the correct answer
October 21, 2008

Collge Algebra
The 8-2x under the square root -x =0 someone help
October 21, 2008

College Algebra
4x^2=8x-5 Please someone help
October 21, 2008

math
4x^2=8x-5
October 21, 2008

social studies
i think it was Tacitus. The historian Tacitus was born in the year 56 or 57 probably in Rome. He was in Rome during the great fire. During his lifetime he wrote a number of histories chronicling the reigns of the early emperors.
October 17, 2008

Math
here's what i get F+S+C=91 S=14+F C=6+F SO... F+(14+F)+(6+F)=91 3F+20=91 3F=71 F=23.667YEARS
October 16, 2008

math
i get 7.2X10^21 cups.
October 16, 2008

math
i posted this one a ways down, i apologize for double posting, but thought this might be a better way to ask. question:if you write the numbers from 1-999 on a piece of paper, (1234567891011121314151617181920...998999) what will the 2006th digit from the left be? so my thought...
October 16, 2008

Biology 2
1st, i am not an expert in physics by any means. just a dad. but here is what i found on a google search. 1 calorie is defined as the amount of energy needed to raise the temperature of 1 gram of water by 1C, so... It takes 50 calories to raise your 50 grams by 1C, but you ...
October 16, 2008

Math - algebra
Hi, i'm not a math expert, just another dad trying to help my kid. i found this and thought it might help. oops, guess i can't paste a website address here. if you google quadratic equation calculator it should come up i think using the quadratic equation here might ...
October 16, 2008

probability
thank you again for all the help
October 16, 2008

probability
Mr. Pursley, thank you for taking the time to answer my question. i very much appreciate the help. just to clarify, then the answer would be (.3636*.3)+(.6363*.6)=0.49 is this right?
October 16, 2008

probability
i'm sorry, i don't understand this response. does it mean the first answer 3/11 is incorrect?
October 16, 2008

probability
7 white socks anf four black socks are in a bag. if two socks are drawn at random, what is the probability that both socks are the same color? thank you so much for the help
October 16, 2008

math
here's my question. if you write the numbers from 1-999 on a piece of paper, (1234567891011121314151617181920...998999) what will the 2006th digit from the left be?
October 16, 2008

grammar
identify simple complete and compound subject and predicate
October 14, 2008

social studies
describe why delegates did not choose either plan for electing the president of the united states
October 4, 2008

History
Thanks. =)
September 7, 2008

History
I had to read a couple of creation myth stories for my history class, and now I have to write an essay on them. I understand mostly why they are important, but I'm failing to understand the role that nature plays in them. Can someone please tell me what that role is, or ...
September 7, 2008

8th grade
if 20 of 100 squares on a grid are shades blue, what percent of the squares are blue
August 25, 2008

Biology
most polar molecules and ions cannot enter cells. why? many food particles are polar how do they get into the cell?
August 4, 2008

BIOLOGY
which following of the aspects of the cell cycle would be most disrupted by cytochalasin B SPINDLE FORMATION CLEVAGE FURROW CELL ELONGATION DNA SYNTHESIS SPINDLE ATTACHMENT
August 3, 2008

biology
G1 is represented by which numbers I AND V II AND IV III IV V
August 3, 2008

biology
a particular cell has half as much dna as some of the other cells in a mitotically active tissue. the in the question is most likely in anaphase G1 prophase metaphase G2
August 3, 2008

biology
in which group of eukaryotic organisms does the nuclear envelope remain intact during mitosis
August 3, 2008

Alegebra 2
Factor x^3+2x^2-36x-72
May 19, 2008

government
Why did the South choose to return to a Confederacy despite the failures of this governmental form in the late 18th Century?
May 14, 2008

Physics
170 students in a lecture hall can scream at 115 dB. Thus, we should expect that: A. an average student can do 0.68 dB by him or herself. B.340 average students can do 125 dB. C.340 average students can do 230 dB. D.1700 average students can do 125 dB. E.85 average students ...
May 8, 2008

English
1. C Correct 2. B Correct 3. D C STUDY GUID 98-100 4. A Correct 5. C Correct 6. C Correct 7. D Correct 8. C Correct 9. C Correct 10. D Correct 11. A Correct 12. C B STUDY GUID 94-96 13. D Correct 14. D Correct 15. B Correct 16. A Correct 17. B Correct 18. A Correct 19. C B ...
April 18, 2008

Science
What first appeared in the Carboniferous Period i cant find it anywhere
April 17, 2008

Trig
Simplify: csc A - sin A - Cot A Cot A Csc A 1/sin - sin A - 1/tan 1/tan 1/sin -sinA?
April 16, 2008

Physics
A skier starts at rest on the top of Mt Circular, a strange, smooth, icy hill shaped like a hemisphere. The hill has a constant radius of R. Neglecting friction (it is icy!), show that the skier will leave the surface of the hill and become air-borne at a vertical distance of ...
April 14, 2008

math
what is 30000+6004=
March 25, 2008

Physics
A small electric immersion heater is used to boil 191.0 g of water for a cup of instant coffee. The heater is labeled 355.0 W, which means that it converts electrical energy to heat at this rate. Calculate the time required to bring this water from 12.0°C to the boiling ...
March 21, 2008

Physics
Nevermind I got it =]
March 20, 2008

Physics
Which of the following is an example of something not allowed by the second law of thermodynamics? Indicate true or false. 1.All refrigerators can be made perfect 2.A spoon in a hot drink spontaneously stirring the drink 3.All the molecules suddenly moving to one place in a ...
March 20, 2008

Interpersonal Communication in Criminal Justice
just to let you know the escobedo v. illinios case "The Supreme Court overturned Escobedo's conviction and recognized a suspect's right to an attorney during police interrogation." and it wasnt so much about the marianda rights it was more about the due ...
March 13, 2008

Physical Science
The nucleus of an atom contains six neutrons and esix protons. The nucleus of a second atom contains six neutrons and five protons. Are they atoms of different elements or isotopes of the same element?
March 11, 2008

physics
A cart of mass M1 = 4.00 kg and initial speed = 4.00 m/s collides head on with a second cart of mass M2 = 2.00 kg at rest. Assuming that the collision is elastic, find the speed of M2 after the collision. i keep getting 2.3 m/s what am i doing wrong?
March 7, 2008

pre-calculus
find the cube roots of -216 answer in polar form and complex
March 6, 2008

Physics
A moving 4.80 kg block collides with a horizontal spring whose spring constant is 243 N/m. The block compresses the spring a maximum distance of 5.50 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal surface is 0.390. What is ...
March 5, 2008

physics
oh sorry its If the crate starts from rest, how fast will it be moving after the man has pulled it a distance of 2.70 m?
March 2, 2008

physics
A man pulls a crate of mass 53.0 kg across a level floor. He pulls with a force of 180.0 N at an angle of 28.0° above the horizontal. When the crate is moving, the frictional force between the floor and the crate has a magnitude of 124.0 N. If the crate starts from rest, ...
March 2, 2008

Physics
actually it's 1 false 2 true 3 false 4 false 5 true 6 true
February 28, 2008

Physics
there's three parts, i keep getting these wrong please help. A set of crash tests consists of running a test car moving at a speed of 11.8 m/s (26.4 mi/hr) into a solid wall. Strapped securely in an advanced seat belt system, a 59.0 kg (130 lbs) dummy is found to move a ...
February 28, 2008

Acids and alkalis
I Need To No Atleast 3 Uses Of Acids And Alkalis!!!! Can You Please Help!!!
February 24, 2008

Calculus
is that how you prove it?
February 21, 2008

Calculus
prove: if z is a complex number and 1/z=the conjugate of z over the absolute value of z squared.
February 21, 2008

Calculus
prove: if z is a complex number and 1/z=the conjugate of z over the absolute value of z squared.
February 21, 2008

Calculus
prove: if z is a complex number 1/2= the conjugate of z of the absolute value of z squared.
February 21, 2008

physics
A bullet (m = 0.0250 kg) is fired with a speed of 91.00 m/s and hits a block (M = 2.30 kg) supported by two light strings as shown, stopping quickly. Find the height to which the block rises. and Find the angle (in degrees) through which the block rises, if the strings are 0....
February 21, 2008

calculus
im sorry they were two different questions you have to find the modulus and the argument ex.15-4i modulus-4 but i dont know what the argument is
February 20, 2008

calculus
find the modulus and the argument of the following complex numbers: 15-4i and a-ai where a is greater than 0
February 20, 2008

the novel
What does the word mimetic tell us about the difference between novels and most of the literature of the 1800s?
February 20, 2008

THE call of the wild
This sentence from a hypothetical novel suggests what kind of narrative voice?
February 20, 2008

Physical Science
I asked a question earlier about a thermometer in a can containing a substance that is being heated.Temperature remains the same for minutes, then start to rise. Without looking in the can, how does student know whats occurring in the can?I was told a phase change what kind of...
February 13, 2008

Physical Science
Inferring:A student examines a thermometer placed in a can containing a substance that is being heated. The temperature remains the same for several minutes, then it starts to rise.Without looking in the can, how does the student know what is occurring in the car?
February 13, 2008

science
what is (aenosss) unscrambled
February 12, 2008

Calculus
Prove the identity and give its domain. 4sinxcosx+sin4x=8sinxcos^3x
February 6, 2008

Spelling/Analogy
What is the analogy with brush?
January 30, 2008

Spelling/Analogy
What is the analogy that goes with brush?
January 30, 2008

Statistics
Suppose the correlation between SAT Verbal scores and Math scores is 0.57 and that these scores are normally distributed. If a student's Verbals core places her at the 90th percentile, at what percentile would you predict her Math score to be/
January 22, 2008

Pre-Calculus
A rectangular garden with an area of 250 square meters is to be located next to a building and fenced on three sides, with the building acting as a fence on the fourth side. Let x be the length of the side parallel to the building. 1. Find T(x), the total amount of the fence ...
January 18, 2008

Physics
A 13 kg bucket of water is attached toa rope that is wound around a cylinder whose radius is 10.3 cm. A crank with a turning radius of 44.6 cm is attached to the cylinder. If the bucket accelerates upwards at a rate of 1.21 m/s^2, then how much tension is on the rope? Again, ...
January 17, 2008

Physics
A hitter hits a baseball into the air. The shortstop, who was initially 33.5 meters away, begins running directly away from home plate at 7 m/s at the moment that the ball was hit and catches the ball, while still running, at the same height from which it was hit, 3.2 seconds ...
January 17, 2008

physics
A ball is thrown vertically upwards with an initial velocity of 20.96 m/s. Neglecting air resistance, how long is the ball in the air? What is the greatest height reached by the ball? this problem seems easy enough but I can't seem to get the answer. How can I get time ...
January 16, 2008

physics
k I'll try it, thanks.
January 16, 2008

physics
I dont have a polar graph, never even heard of it. Is there any way to do this with equations?
January 16, 2008

physics
A 14.5 kg ring has 3 ropes attached to it. One rope is being pulled due North with a force of 340 N. Another rope is being pulled 68 degrees South of West with a force of 450 N. How hard and in what direction must the third rope be pulled in order to cause the ring to move 15 ...
January 16, 2008

PHYSICS
so you get the distance to equal .84?
January 15, 2008

PHYSICS
a child is pulled on a sled across a snow-covered yard. the combined mass of the child and the sled is 35 kg. the angle that the rope pulling the sled makes with the horizontal is 34 degrees. the person pulling on the rope applies a force of 182 N. given that the coefficient ...
January 15, 2008

physics
An astronaut weighs 696 N on the Earth. What is her weight on planet X, which has a radius Rx = Rearth 1.60 and a mass Mx = Mearth 8.60? -the only equation I know for weight is "w = m x g"...I don't know how to solve for w using force.
January 13, 2008

Chem
H2SO4+B(OH)3=B2(SO4)3+H2O
January 6, 2008

math
i need help congruence chapter all about it
January 3, 2008

math b1
is that a negative 8
January 3, 2008

Science
What do I put in my data table for a salt crystal experiment. One grown in bowl on kitchen counter and one in the refrigerator
December 28, 2007

Physics
A child sits on one side of a teeter totter of length 7.60 m, a distance of 49.7 cm away from the end of the beam. The child has a mass of 21.6 kg. Her mother has a mass of 43.6 kg. How far away from her end does she have to sit in order for the teeter tooter to be exactly ...
December 17, 2007

physics
Take the density of the crown to be . What is the ratio of the crown's apparent weight (in water) to its actual weight ?
November 29, 2007

AP Biology
When predicting the change of cellular respiration in an ectotherm, such as a snake,when subjected to a temperature of 5 C, would I be correct in saying that the rate of cellular respiration would increase?
November 22, 2007

College Algebra
An executive flew in the corporate jet to a meeting in a city 1500 kilometers away. After traveling the same amount of time on the return flight, the pilot mentioned that they still had 300 kilometers to go. The air speed of the plane was 600 kilometers per hour. How fast was ...
November 20, 2007

College Algebra
A truck driver traveled at an average speed of 55 miles per hour on a 200 mile trip to pick up a load of freight. On the return trip(with the truck fully loaded), the average speed was 40miles per hour. What was the average speed for the round trip?
November 19, 2007

Precalculus
I'm working on a project and I need some help with figuring out the equations to write. Here is all the information about the project: You and your friends decide to produce your own CD. After searching on the Internet, you find a low-cost CD duplication outfit that will ...
November 18, 2007

AP Statistics
How would I go about solving these problems? In Exercise 9 we suggested the model N(1152,84) for weights in pounds of yearling Angus steers. What weight would you consider to be unusually low for such an animal? Explain. If you are given the model N(1152,84),what are the ...
November 16, 2007

College Algebra
Find two consecutive numbers such that the difference of their reciprocals is 1/4 the reciprocal of the small number.
November 15, 2007

Physics
You place a box weighing 223:2 N on an in- clined plane that makes a 38:4± angle with the horizontal. Compute the component of the gravita- tional force acting down the inclined plane. Answer in units of N.
November 13, 2007

Statistics
I need help figuring out these two problems. I think I have the right idea about solving them but I'm not exactly sure. 8. Two companies market new batteries targeted at owners of personal music players. DuraTunes claimes a mean battery life of 11 hours, while RockReady ...
November 10, 2007

AP Statistics
Suppose a Normal model describes the fuel efficiency of cars currently registered on your state. The mean is 24 mpg, with a standard deviation of 6 mpg. -Describe the fuel efficiency of the worst 20% of all cars. I know that you convert 20% into decimal form to get .2 and put ...
November 9, 2007

history
How does the nationalism that developed over the Berlin Wall in Germany differ from the situation in Northern Ireland with the Catholics and Protestants?
November 7, 2007

math
Darcy must work 35 hours (472.5 divided by 13.5)
November 7, 2007

math
how many hours must darcey work at \$13.50per hour to earn \$472.50=
November 7, 2007

math
neither the answer is -0.5 because -3x means -3 times x/ -3 times -0.5 equals 1.5 which is 3/2 as a fraction
October 14, 2007

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