Thursday
July 31, 2014

Posts by courtney


Total # Posts: 659

4th grade
i used the equation: 1/2x+1/4x+3=x then add 1/2x and 1/4x: 3/4x+3=x then subtract 3/4x on both sides:3=1/4x then divide by 1/4x: 12=x -12 coins is the answer :)

4th grade
Bobby has 12 coins. he has 3 dimes, 6 pennies, and 3 quarters

science-8th
thanks....but ive tried that. this is for my friend but its okay we'll figure it out sooner of later! Thank you very much

Health
what role do health care worker play in determing quality care

physics
First you have to calculate the time it takes for the block to hit the ground. y(t)=vit+(1/2)gt^2 y(t)=1+(1/2)(-9.80)t^2 Solve for t: t=0.45s With distance and time you can calculate velocity: d/t= 2.00/0.45= 4.44m/s Use this velocity in calculating the initial velocity of the...

Literature / Short story I
1.C 2.C 3.A 4.C 5.A 6.D 7.D 8.C 9.A 10.C 11.B 12.B 13.C 14.D 15.B 16.B 17.D 18.D 19.A 20.B JUST TOOK THE TEST MADE A 100

History
What is the cultural affect of trade and warfare?

english
I used a quote in my essay for school. I have to do a work cited page. What information do I need to cite it properly. I did a bunch of google searches put they really didn't help.

english
True meaning lyes behind this quote because.. is the world lyes spelled right?

Trig
tan(to the second power) s sin(to second power)=tan(to second power + cos(second power) s - 1...I need the steps on how to get it to equal...problem looks like tan2 s sin2 s=tan2 s + cos2 s - 1...thanks if you can figure it out

english
Thank You very helpful the both of you!! Good work

english
Can you start a sentence off with the word because?

7th grade science
i need pictures of cardiac,smooth and skeletal muscles

7th grade
What is a word that starts with the letter U?

music
Where did Hector Berlioz study music?

12th grade chemistry!!
huh??

12th grade chemistry!!
Where on the periodic table would you find elements that ionize to form cations and anions?????

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.

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!!

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

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

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

predicates and subjects
hi

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.

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!!

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!!

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

Collge Algebra
The 8-2x under the square root -x =0 someone help

College Algebra
4x^2=8x-5 Please someone help

math
4x^2=8x-5

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.

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

math
i get 7.2X10^21 cups.

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...

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 nee...

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 th...

probability
thank you again for all the help

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?

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

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

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?

grammar
identify simple complete and compound subject and predicate

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

History
Thanks. =)

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 gi...

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

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

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

biology
G1 is represented by which numbers I AND V II AND IV III IV V

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

biology
in which group of eukaryotic organisms does the nuclear envelope remain intact during mitosis

Alegebra 2
Factor x^3+2x^2-36x-72

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

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 ca...

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 STU...

Science
What first appeared in the Carboniferous Period i cant find it anywhere

Trig
Simplify: csc A - sin A - Cot A Cot A Csc A 1/sin - sin A - 1/tan 1/tan 1/sin -sinA?

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 ...

math
what is 30000+6004=

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 po...

Physics
Nevermind I got it =]

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 ro...

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 proce...

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?

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?

pre-calculus
find the cube roots of -216 answer in polar form and complex

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 ...

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?

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, h...

Physics
actually it's 1 false 2 true 3 false 4 false 5 true 6 true

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 d...

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

Calculus
is that how you prove it?

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

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

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

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 0.2...

calculus
thanks

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

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

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

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

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...

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?

science
what is (aenosss) unscrambled

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

Spelling/Analogy
What is the analogy with brush?

Spelling/Analogy
What is the analogy that goes with brush?

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/

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 n...

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, s...

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 ...

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 usi...

physics
k I'll try it, thanks.

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

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 ...

PHYSICS
so you get the distance to equal .84?

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 o...

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.

Chem
H2SO4+B(OH)3=B2(SO4)3+H2O

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