Thursday
July 24, 2014

Posts by alex


Total # Posts: 2,544

psychology
please can someone help me? What are the characteristics of the following anxiety disorders? ◦ Generalized Anxiety Disorder ◦ Obsessive-Compulsive Disorder ◦ Phobic Disorder ◦ Specific Phobia Disorder

world history
help please.... why was the International Organizations important In history? Whay was the Reconstruction of Europe and Japan important in history?

world history
thanks...

world history
please can Someone help me on this... What was the causes, what happened, and its final outcome of the Yom Kippur war 1973?

Math
Rewrite the given equation using the substitutions x=rcos@ and y=rsin@. (@=theta) Simplify your answer.

Art History
thank you Ms.sue (:

Art History
Help please... What do you believe the amphitheater in Pompeii reveals about the culture that created it?

calc
Find the corresponding rectangular coordinates for the polar point (4, -/6).

Calc
Consider the line passing through the points (2, 1) and (-2, 3). Find the parametric equation for y if x = t + 1.

Art History
thanks

Art History
pompeii colosseum do you have that site please?

Art History
I need a site so I can choose one and read about that so I can do my assignemt cause my assignmnet says this now choose your favorite of the architectural site at Pompeii. In 250-300 words, describe details of it and be sure to address the following: ¡What do you b...

Art History
In my art history assignmnet it says this now choose your favorite of the architectural site at Pompeii. So please help me to find a pompii site. or give me that wibsite. Thanks

world history
ok thanks so much (:

world history
so this would be okay?

world history
I think I cant use the websit you give me cause my assignment says this Remember to provide proper citations for websites that you use and to stay away from online study guides and encyclopedias.

world history
I need help in the Yom kippur war 1973. In one-two paragraphs, explain the event that you chose. Be sure to mention those directly involved in the event, its causes, what happened, and its final outcome. and it says stay away from online study guides and encyclopedias. So I ne...

Math(Probability)
The joint p.m.f. of X and Y is f(x, y) = 1/6, 0 ≤ x + y ≤ 2, where x and y are nonnegative integers. (a) Sketch the support of X and Y. (b) Record the marginal p.m.f.’s f1(x) and f2(y) in the “margins.” (c)Compute Cov(X, Y). (d)Determine ρ,the ...

Math
A consumer buys n light bulbs, each of which has a lifetime that has a mean of 800 hours, a standard deviation of 100 hours, and a normal distribution. A light bulb is replaced by another as soon as it burns out. Assuming independence of the lifetimes, find the smallest n so ...

trig
use a sum or difference identity to find an exact value cos pie/12

trig identies 5.3 &5.4
cos pie/12

trig identies 5.3 &5.4
use a sum or difference identity to find an exact value pie/12

chemistry
how many grams of NH3 are in 250 ml of a 20% (w/v) ammonia solution

pyschology
I need an idea to get started please help me Thanks 1.First, choose two personality disorders: I'll choose Paranoid or you can choose one for me please •Schizoid •Paranoid •Antisocial •Borderline •Histrionic •Narcissistic •Avoidant •...

pschology
Ok thank you. I'll look it up and other disorders too and see if I can answer the questions but if still don't get them i'll came back.

pyschology
I'll choose the Conduct Disorder but I don't know about the characteristics of this disorder.

pschology
Just answering the questions for me because I dint know what to do so thanks

pschology
Plaes help me with this I need it as soon as possible... Thanks 1.Choose one of the disorders listed below: •Tourette’s Syndrome •Oppositional Defiant Disorder •Conduct Disorder •Anxiety Disorder •Bipolar Disorder You can choose one for me and do ...

psychology
ok I'll choose the Paranoid and Schizoid

Specific heat
When 1500 joules of energy is lost from 0.12kg object the temperature decreases from 45 to 40 What is the specific heat of this object ? Of what material is the object made?

math
The lifetime (In Years) of Manufactured product is Y=5X^0.7, where X has an exponential distribution with mean 1. Find the distribution function of PDF Y.

Math(Probability)
Let X be N(0,1) find the p.d.f of Y=|X|, a distribution that is often called the half normal.

Calculus
Find the equation of the line tangent to the graph of y=4 e^x at x=2. I always get confused with tangent lines I worked this out to be 4e^x(x-2)+4e^2 but the program i have to submit it to says its wrong.

Chemistry
What is the final temperature when 750 J of energy is added to 9.0 g of ice at 0.0 degress C?

math
hello i need help with system of equations theres 3 only thank you 2x+3y-17 3x+y=31 2(x-3y)=24 y=3x-2 2(x+4)=24 x+y=17

math
hello i need help with system of equations theres 3 only thank you 2x+3y-17 3x+y=31 2(x-3y)=24 y=3x-2 2(x+4)=24 x+y=17

math
hello i need help with system of equations theres 3 only thank you 2x+3y-17 3x+y=31 2(x-3y)=24 y=3x-2 2(x+4)=24 x+y=17

Algebra
What can you multiply to get 5 and add to get 6 (two numbers both the same numbers)??? Help

college chemistry
If the equilibrium constant (Keq) equals 9.12x1012 for the following reaction between strontium and magnesium: Sr(s) + Mg2+(aq)<==> Sr2+(aq) + Mg(s) Calculate Eo for a strontium=magnesium battery.

Essay conclusion
Thanks!

Essay conclusion
I am trying to write a conclusion for my essay about connecting my author's life to her books. Can anyone give me some tips on how to write a conclusion without simply restating what I said in the introduction? Thank you!

science
Never smell the chemical by sticking your nose right over the beaker, instead, you should gently waft the vapors toward your nose.

college chemistry
If the equilibrium constant (Keq) equals 9.12x1012 for the following reaction between strontium and magnesium: Sr(s) + Mg2+(aq)<==> Sr2+(aq) + Mg(s) Calculate Eo for a strontium=magnesium battery.

science
Choose one yourself, no one is going to do your homework for you. Go ahead and think about it, and we can look at what you come up with. I'm going to give you a hint: there is pretty much no wrong answer to this, it's just whatever you make up.

math
Okay, for the first one, just do the (x-3)^2 like you normally do, then multiply everything by -2. with the second one, do (x-4)^2 like you normally do, then multiply by -1. Now, just add 3.

math
I was just writing it out, it's the same thing you did when you got x^2, I was just showing multiplying the two x's. And it it three terms when you add like terms together. I'll continue with what I did before. x^2 -3x -3x +9. You basically did the same thing, only...

math
I'm going to start you off on this one, but you already asked one a lot like this, and we are not going to do your homework for you. (x-3)(x-3) x(x) + x(-3) + x(-3) + -3(-3) You should be able to figure it out from there.

math
First, you need to distribute with the two different parentheses. 5(2x)+5(6) = -4(-5) + -4(-2x) + 3x. When you multiply, you get 10x + 30 = 20 + 8x + 3x combine like terms 10x + 30 = 20 + 11x Now, you need to get x alone in order to solve it. so, you subtract 20 from both side...

math
Write it like this: (7x+3y)(7x+3y) Our teacher tells us to Foil, which means we multiply the Firsts, the OUters, the Inners, and the Lasts. If you do this, you get 7x(7x) + 7x(3y) + 7x(3y) + 3y(3y) 49x^2 + 21xy + 21xy + 9y^2 49x^2 + 42xy + 9y^2

Essay titles
Okay, thanks! I wasn't sure if it was still italicized if it was in the title or not, and I couldn't find it easily on the websites about MLA.

Biology
What are some recent (a few months old would be fine) newspaper articles (found online) about molecular biology? (Eg: cloning, genetically modified food, mutation, etc)

Chemistry
thanks, that helps alot

Chemistry
Can you help me with solving this? I don't just want the answer,but how to do it. The average distance between Mars and Earth is about 1.3 108 miles. How long would it take TV pictures transmitted from the Viking space vehicle on Mars' surface to reach Earth? (1 mile =...

Physics
A 200-Ù resistor, 40.0-mH inductor and a 2.00-ìF capacitor are connected in series with a 120-V rms source at 1000 Hz. What is the phase angle of this circuit?

Physics
A 7uF capacitor is charged to a potential difference of 110V The electrical energy stoed in the capacitor is (4.2x10^-2 was the given answer) but I used C=Q/V and keep getting 7.7x10^-4 also A particle of charge Q and mass m is accelerated from rest through a potential differe...

physics
Silicon is doped an acceptor of 10^18/cm^3. Find the electron and hole concentration, the electron and hole mobilities, and the resistivity of this silicon material at 300 K. Is this n-type or p-type?

chemistry
If 448 L of ethene gas are reacted with excess water at STP, how many grams of ethanol will be produced?

Chemistry
A 100.0 mL sample of 0.20M HF is titrated with 0.10M KOH. Determine the pH of the solution after the addition of 100.0 mL of KOH. The Ka of HF is 3.5 x 10^-4

statistics
You are a travel agent and wish to estimate, with 98% confidence, the proportion of vacationers who use an online service or the Internet to make travel reservations. Your estimate must be accurate within 4% of the population proportion. a) No preliminary estimate is available...

Algebra
6x^2+9cx= 6c^2 I tried moving the 6c^2 to the other side of the equation, then factoring (36) to arrive at (6x^2+12cx) (-3cx-6c^2)...then....6x(x+2c) -3c(x+2c)...but I am not getting it? The answer in the book is...-2c, c/2?

algebra
x^2-4x-5=0 (x+1) (x-5)=0 x+1= 0 x-5= 0 -1 -1 +5 +5 x=-1 x=5

math
What is 3 yd 1 ft - 1 yd 2 ft?

HHS
is that I for iodine?

Math
9*10^10

trig
what is the question? is it 2cos(pi^2)/(8-1)?

Physics
further from higher level unless there is no gravity in which case they will both travel forever at the same speed

Diff EQ
Find all critical points of the given system and investigate the stability of each. dx/dt = y - 1 dy/dt = x^2 - y

Calc,
you do it by converting it to int[x/x^(3/2)+2/x^(3/2)]= int[1/x^(1/2)+2/x^(3/2)]= int[x^(-1/2)+2*x^(-3/2)]= [2x^(1/2)-4*x^(-1/2)]x=16...25= 10-4/5-8+1= 11/5

American History
agricultural

American History
i think its c

American History
During the Carter administration, Zbigniew Brzezinski A. tried to reverse the policy of détente. B. rejected the adoption of the MX missiles to replace the older Minute Man missiles. C. was directly involved in continuing the SALT talks. D. tried to get Carter to roll b...

english
I am doing something called "Mystery word match". you have to combine all three words to make another word. renovate activity motion Bones do_ _ _ _ _ _ _ _ (8 letters)

Math
can you prove this equation for me? sin2x X sec2x = 2sinx

FMU
After 2.02 g of Al has reacted completely with 0.400 L of 2.75 M HCl (the excess reactant), what is the molarity of the remaining HCl? 2Al(s)+6HCl(aq)-->2AlCl3(aq)+3H2(g)

Science
If the perimeter of the rectangular ball field is 1 kilometer which of the following could be the field's dimensions? L=312m W=188m or L= 1/2 m W = 1/2 m

Math
If the perimeter of the rectangular ball field is 1 kilometer which of the following could be the field's dimensions? L=312m W=188m or L= 1/2 m W = 1/2 m

geometry
The shortest side of a polygon of area 196 sq. in. is 4 in. long. Find the area of a similar polygon whose shortest side is 8 in. long.

Algebra
Of what percent of 320 is 180?

Chemistry
The following rearrangement reaction is first order: C3H6 ¨ CH3CH=CH2 The rate constant for this reaction is 6.7 ~ 10−4. How many minutes will it take for the concentration of C3H6 to drop to 11.75% of its initial value? How do I calculate this step by st...

Chemistry
A first order reaction has a rate constant of 0.0733 s−1. What is the half life for this reaction in seconds? when I plug in the numbers in the formula, my answer was 9.45. But on the computer it says the answer is wrong. How do I find the right answer?

chemistry
what is the concentration in percent volume of 60mL or methanol in a total volume of 500mL

chemistry
CALCULATE THE NUMBERS OF MOLES OF POTASSIUM CHLORATE THAT MUST DECOMPOSE TO PRODUCE POTASSIUM CHLORIDE AND 1.80 MOLES OF GLYCOGEN GAS

Math
If a race car travels a circular track, total 1 mile. What is its displacement?

Math
Find x > 3 such that ln(x) < x^(0.1)

Chemistry
A sample of air occupies 3.8 L when the pressure is 1.2 atm. (a) What volume does it occupy at 7.3 atm? (b) What pressure is required in order to compress it to 0.050 L? (The temperature is kept constant.) I already know the answers to each question, but do not understand how ...

Printing
What are the three standard sizes of paper used in the U.S.? List the size (dimension) then the name

computers
What is the typical screen resolution of a computer monitor? A) 85 B) 200 C) 72 D) 100 dont want the answer, just a hint.

Typing
Thank you.

Typing
If you cut a letter-sized document into 4 equal pieces (4-up), what are the dimensions of each piece?

Math
Thank you.

Math
What is the decimal equivalent of 1/4

typing
What is the size of the margin (inside the business card) to prevent text and graphics from being cut off during trimming

Math
thanks

Math
How many half-inches are in 13"?

political science
Please help Thank you Examining and criticizing the policies and proposals of the majority party is a function of ? The majority party Foreign governments The minority party Government bureaucrats The judicial branch The power an interest group exerts is generally dependent up...

Chemistry Help!
4 NH3 + 5 O2 ¨ 4 NO + 6 H2O If the rate of disappearance of O2 is 0.772, what is the rate of appearance of NO?

chemistry( urgent)
what do we assume about volume of the actual molecules themselves in a sample of gas, compared to the bulk volume overall?why?

PHY
A car is driven east for a distance of 43 km, then north for 25 km, and then in a direction 26° east of north for 26 km. Determine (a) the magnitude (in km) of the car's total displacement from its starting point and (b) the angle (from east) of the car's total dis...

calculus
how can I determine the domain of a function h(x): integrate from 0 to 2x-1 f(t)dt, when the f(x) function is a graph shown and equations for both semicircles in the graph are: square root of 4x-x(squared) and for the second one -square root(1-(x-5)squared). later find derivat...

Newton' law of motion
A resultant force of 50N pulls a body of mass 10kg along a smooth horizontal surface. Calculate the acceleration with which the body is moved

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