Friday

February 27, 2015

February 27, 2015

Total # Posts: 276

**Calc**

Thank you! For y sec(x) = 3x tan(y) I got dy/dx = (3 tan(y) - y tan(x)sec(x)) / (sec(x) - 3x sec²(y)) but it was still incorrect... I have no idea how to do y = arctan[(sqrt((1 + x)/(1 - x)))] because i never did this type of problem before, help please. here is another ...
*October 26, 2009*

**Calc**

Thank for replying =D. Unfortunately, I have been using implicit differentiation and I do not fully understand the logarithm. I am still getting an incorrect answer. Please show me an example on how to solve these problems. Thank you.
*October 26, 2009*

**Calc**

Can anyone help me find the derivative of these functions? y = x^2x y = x^-cos(x) y = ln(7x^2 + 5y^2) sqrt(3x+y)=2+x^2y^2 ysec(x) = 3xtan(y) y = arctan[(sqrt((1 + x)/(1 - x)))]
*October 26, 2009*

**elementary**

It must be an elementary question because I too have the same question on my homework. I was thinking the shape they are looking for is a trapezoid but still having problems getting to the .95 out of .30, 1.25 and 1.00
*October 22, 2009*

**sociology**

Conflict Perspective
*October 12, 2009*

**english 7th grade**

whatever memory you choose, how were you felling at exactly that time, right then and a stanza is like the seperate paragraphs in a poem like when it skips a couple lines those seperate paragraphs are stanzas hope i could help=)
*October 6, 2009*

**social studies**

christopher columbus was looking for a way to india and accidentily found america instead
*October 6, 2009*

**Math**

scientific notation
*October 6, 2009*

**8th grade**

ok my teacher just assigned me this wikid stupid worksheet with a riddle whom do you see at the bank if you need to borrow money?
*October 6, 2009*

**biology**

haha=)
*October 6, 2009*

**biology**

thanks for the math answer now that i think about it its kind of obvious but thanks =)
*October 6, 2009*

**BIOLOGY**

Heat exhaustion caused by a person's exposure to heat can result in weakness or collapse. It usually involves a decrease in blood pressure. Explain why the homeostasis adjustment to heat can cause a drop in blood pressure. ---------- I'm not sure if I'm correct. ...
*September 30, 2009*

**math**

Name the ordered pair if the x-intercept is -2.
*September 29, 2009*

**Calculus**

Is it 4 or 1?
*September 29, 2009*

**Calculus**

cos4x^2 + sin4x^2?
*September 29, 2009*

**(math) geometry**

i have to find the next two terms for a pattern of H,He,LI,Be. I am confused any help?
*September 16, 2009*

**Advanced Math**

A set of 750 values has a normal distribution with a mean of 12.5 and a standard deviation of 0.36. A. What percent of the data is between 12.25 and 12.75? ANSWER: 51.6% B. Find the interval about the mean within wich 45% of the data lie. ANSWER: 12.28-12.72 C. Find the ...
*August 11, 2009*

**English IV**

The effect urban life has on the woman in the poem "Preludes" by T.S. Elliot is she: A. has become sophisticated. B. has developed wisdom. C. is depressed. D. is sordid and "dirty" like the city. I think it may be either B or C. 1 - The tone of the poem &...
*July 19, 2009*

**Literature**

In the poem "The Lady of Shalott," what does the web she weaves symbolize? A. Anger. B. Pain. C. Reality. D. A curse. I'm stuck between C and D?
*July 15, 2009*

**Literature**

1 - In Ulysses by Alfred, Lord Tennyson, Ulysses is unhappy because: a - he's idle. b - the war has started. c - he has to leave his son. d - he's no longer leader of his country. Are these correct? MY ANSWER: A 2 - What crisis does Ulysses face? a - war. b - losing ...
*July 15, 2009*

**Advanced Math**

Yes, I had a typo sorry. It was. (2x^2+3)(x-1) Is it 19 now?
*June 15, 2009*

**Advanced Math**

1. The distance s(t) between an object and its starting point is given by the anti derivitive of the velocity function v(t). find the distance between the object and its starting point after 15 sec if v(t)=0.2t^2+2t+10 meters/seconds. MY ANSWER: 600 meters. 2.Find the slope of...
*June 15, 2009*

**Advanced Math**

The probability of getting 2 heads and 1 tail when three coins are tossed is 3 in 8. Find the odds of not getting 2 heads and 1 tail. ANSWER: 5:8? Three Coins are tossed. Find the probability that exactly 2 coins show heads if the first coin shows heads.? ANSWERS: Could it be ...
*June 10, 2009*

**Government**

Suppose you want to take a scientific poll about people’s opinion on a new boating law for Lake Blue. Who should make up your universe—all the people in the United States, only townspeople, only boat owners, only people who live on the lake, anyone who uses Lake Blue...
*May 12, 2009*

**Physics**

The horizontal motion of a horizontally launched projectile affects its vertical motion. (FALSE) A missile launches at a velocity of 30.0 m/s at an angle of 30.0* to the normal. What is the maximum height the missile attains? (11.5 m, I'm not very sure) In calculating the ...
*May 6, 2009*

**Pre Calc.**

Use the sum or difference identity to find the exact value of sin255 degrees. My answer: (-sqrt(2)- sqrt(6)) / (4) Find the value of tan (alpha-beta), if cos alpha= -3/5, sin beta= 5/13, 90<alpha<180, and 90<beta<180. My answer: -33/56 Which expression is ...
*April 22, 2009*

**math**

can i get a link containing a list of the theorems and postulates of a 2 column geometry proof?
*April 12, 2009*

**math**

In a coordinate plane, what is the total number of points 5 unita from the origin and equidistant from both the x and y axes? 1)1 2)2 3)3 4)4
*April 11, 2009*

**Pre cal.**

Determine the linear velocity of a point rotating at 25 revolutions per minute at a distance of 2 feet from the center of the rotating object. Give answer in feet/sec/ 25/60 = 5/12 revs per second Convert rev per second to rad/sec 5/12*2*pi = 2.618 rad/sec at a distance of 2 ...
*April 1, 2009*

**Pre Cal.**

Given that x is an integer between -2 and 2, state the relation represented by the equation y = 2-abs(x) by listing a set of ordered pairs. Then state whether the relation is a function. I think it's: (-2,0) (-1,1) (0,2) (1,1) (2,0)
*April 1, 2009*

**Physics - Waves**

So the answer is 400(345.8/340.8) = 405.87 Hz?
*February 1, 2009*

**Physics - Waves**

So the answer to the first question is 394.3 Hz and the answer to the second question is 400 Hz?
*February 1, 2009*

**Physics - Waves**

My thinking is: f2=f1(V/V+Vs) f2=Heard frequency=394.3 Hz f1=Source frequency=400Hz V=velocity of sound in medium=332+0.6(23)=345.8 m/s Vs=velocity of source=5 m/s I'm not sure about the second question, though.
*February 1, 2009*

**Physics - Waves**

A speaker which produces a frequency of 400 Hz is moving away from an observer and towards a wall at 5 m/s when it is 23 degrees Celsius. What is the frequency of the sound that travels back to the observer? What is the frequency of the sound that travels forward and bounces ...
*February 1, 2009*

**Algebra**

I think I have the correct equation, but can someone please double check and tell me if I am correct. Scenario: Suppose that the width of a rectangle is 5 inches shorter than the length, and that the perimeter of the rectangle is 50. Question: Set up an equation for the ...
*January 3, 2009*

**math**

Louise is 8 years old now
*October 29, 2008*

**AP U.S History "American Pageant" Series**

I congratulate you for your confidence that although you do not already understand the material in this course, you eventually will learn much more through the process of TRYING to learn and understand. You WILL learn more by trying to learn more, and that's what education...
*October 18, 2008*

**english composition**

Watching horror movies is a way of feeding our inner insanity and bave our nightmares.
*October 11, 2008*

**music-buddy holly**

i`m doing a school projrct about buddy holly ive looked in the site drwls suggested but i can`t find much info or many pictures . any ideas thanks
*September 22, 2008*

**chemistry**

how do you do the conversion?
*August 23, 2008*

**chemistry**

convert 5.98 x 10 to the 24th kg. to mg.
*August 23, 2008*

**Geometry**

Next 2 in the pattern M,V,E,M,...
*August 14, 2008*

**Finance**

The Victoria Nursery, which provides facilities for pre-school children on a commercial basis, is preparing its cash budget for next year. A profile of the estimated revenues and expenses for the first four months of the year is as follows: Jan Feb Mar Apr £ £ &...
*March 21, 2008*

**Analysis & Design**

How can a project manager be sure that he or she has chosen the correct metrics to assess project performance? I need a few examples please.
*February 29, 2008*

**Algebra**

How can you determine if two lines are perpendicular?
*February 27, 2008*

**math**

Write equation of line given 2 points (1,4) (8,-10)
*December 12, 2007*

**algebra**

When thrown into the air from the top of a 50 ft building, a ball’s height, S, at time t can be found by S(t) = -16t^2 + 32t + 50. When t = 1, s = -16(1)^2 + 32(1) + 50 = 66. This implies that after 1 second, the height of the ball is 66 feet. When t = 2, s = -16(2)^2 + ...
*November 23, 2007*

**Business**

I wasn't asking for it to be done for me i just wanted someone to explain it to me. So I could get a better understanding of the subject
*November 23, 2007*

**Business**

Explain the methods governments use to promote and restrict international trade.
*November 23, 2007*

**algebra**

this is what I came up with for my monitor is this right or did I do it wrong. a^2 + b^2 = c^2 13*2+10*2 = c^2 26+20= c^2 46=c^2 46=√(c^2) 6.78= c
*November 22, 2007*

**algebra**

ok thank you know if you could break it down to me where i can do it own my owe that would be great. because, i do not know how to do algebra at all.and i'm taking a college corse it which i have to pass.
*November 22, 2007*

**algebra**

figuring out if my monitor is 13inch by 10 half inch. how do i put that into what i'm ask to do?
*November 22, 2007*

**algebra**

In your post, include the height, the width, and the calculations needed to determine the length of the diagonal of your computer monitor. After you have calculated the approximate length using the Pythagorean theorem, use a measuring device to measure the length of the ...
*November 22, 2007*

**algebra**

the height of your computer monitor to the nearest tenth of a centimeter or sixteenth of an inch. Measure the width of your monitor as well. Use the Pythagorean theorem to find the length of the diagonal of your monitor. In your post, include the height, the width, and the ...
*November 22, 2007*

**algebra**

A tennis club offers two payment options: Option1: $35 monthly fee plus $4/hour for court rental Option 2: No monthly fee but $6.50/hour for court rental. Let x = hours per month of court rental time. a) Write a mathematical model representing the total monthly cost, C, in ...
*November 21, 2007*

**Romeo and Juliet**

i need to no how romeo and juliets parents reacted to there deaths? asap
*November 5, 2007*

**Economics**

Suppose that a small open economy begins to use credit cards, starting from monetary equilibrium, allowing households to hold more of their wealth in interest bearing assets. Discuss the effect on real and nominal money supply, foreign-exchange reserves given: A) Fixed ...
*November 3, 2007*

**math**

Bill is 2 years older than ted (1) b = t + 2 where b = bill's age TODAY and t = ted's age TODAY In 5 years 5 times ted's age will be 4 times bill's age: (2) 5(t+5) = 4(b+5) Put equation (1) into (2) for b. 5(t+5) = 4(t+2+5) ==> 5t+25 = 4t+28 solve for t to ...
*October 10, 2007*

**Math repost for Justin**

draw the lines like this \// /X/ //\ one diagonally down from left to right and the other 3 from right to left connecting all rows possible.
*October 10, 2007*

**Math, Still Need Help!**

S=150 and A=250 S+A=400 A=400-S 2S+3(400-S)=1050 Solve for S S=150 Plug back in top equation A=250
*September 22, 2007*

**prealgebra**

y=7-3x
*September 22, 2007*

**Managerial economics**

Posted by Patrick on Saturday, September 22, 2007 at 5:25pm. Suppose Nick produces to goods @ cost C(q1,q2)=1000=.5q1^2+.5q2^2-5q1q2 If nick produces only one of he two goods his cost is given this cost function with the other good set = to 0. The inverse demand functions for...
*September 22, 2007*

**PRE-ALGEBRA**

H=F/5G
*September 22, 2007*

**Managerial economics**

Suppose Nick produces to goods @ cost C(q1,q2)=1000=.5q1^2+.5q2^2->5q1q2 If nick produces only one of he two goods his cost is given this cost function with the other good set = to 0. The inverse demand functions for the two goods are given by p1=a-.25q1 and p2=A-.05q2 a=17...
*September 22, 2007*

**Math**

X=-30
*September 22, 2007*

**AP Chemistry**

(a)calculate the mass percent of carbon in the hydrated form of the solid that has the formula BeC2O4 X 3 H2O (s). I divided 24.02 g by 151.08 g and got .16, or 16%. is that correct? Also, I'm having trouble with this follow up question. When heated to 220 degrees C, ...
*September 19, 2007*

**Finance**

What are some methods used to compare the financial condition of a competing organization?
*September 4, 2007*

**chemistry**

10.0 moles of NH3 and 10.0 moles of H2 are introduced into a 1.00 L flask. At equilibrium, 3.0 moles of NH3 gas remain. Calculate Kc for this reaction. N2(g) + 3H2(g) < > 2NH3(g) sorry i forgot to say show all the work please! We usually don't do the whole problem. ...
*August 5, 2007*

**cultural diversity**

How do you think slavery influenced the evolution of both Black and White America today? Consider the following in your answer. One, if slavery did not exist in the US then the black population would probably be significantly lower today. Two, without slavery there would have ...
*July 25, 2007*

**science**

Which provides more cooling for a Styrofoam cooler, one with 10lb of ice at 0C or one with 10lb of ice water at 0C? Explain your reasoning. 10# ice requires heat to melt the ice + heat to heat the water after it melts. 10# ice water requires heat to heat the water. Which do ...
*February 17, 2007*

**Government (Jury)**

I was wondering why we have a jury system for courts? Please respond. http://www.19thcircuitcourt.state.il.us/bkshelf/resource/origin.htm =) Thanks.
*October 14, 2006*

**Psychiatry**

As a consumer of psychiatric services, I have never heard of an unemployed psychiatrist. It is very difficult to get an appointment with a psychiatrist because there is such high demand for their services relative to the number who are trained and enter the practice. Meanwhile...
*September 1, 2006*

**BIOLOGY (DNA)**

Why does DNA have the consistancy of thick syrup or mucus? because of all of the different substances
*August 21, 2006*

**3mts**

Can someone please let me know what these mean; 3 MTS - C, F and K and this one too 2 L in a SP of G Please and thank you so much for your help:) 3 major temperature scales - celsius, fahrenheit and kelvin 2 lenses in a standard pair of Glasses
*July 10, 2006*

**social studies**

what is consumer awareness and its need? Please tell us what you think consumer awareness and its need is. Then we'll be glad to critique your answer.
*June 14, 2006*