Saturday

April 18, 2015

April 18, 2015

Total # Posts: 1,128

**algebra**

I need to list some jobs where people use algebra and write how they use it. I know about every job uses it, but I don't know how to find examples. Do you have any guidelines or helpful hints?
*April 15, 2008*

**chemistry**

Assume that the amount of CH3COOH that ionizes is small compared with the initial concentration of the acid. Calculate Ka for the acid. Thank you
*April 8, 2008*

**chemistry**

Lab: Determining Ka of Acetic Acid Purpose: The purpose of this experiment is to determine the molar concentration of a sample of acetic acid and to calculate its Ka. Materials: phenolphthalein 125 mL Erlenmeyer flask 25 mL pipet and bulb pH metre acetic acid solution burette ...
*April 8, 2008*

**trig**

Perform the basic conversion. Give exact answers i)0 degrees = ____ rad ii)90 degrees = _____ rad iii)180 degrees = _____ rad iv)30 degrees = _____ rad v)45 degrees = _____ rad vii)60 degrees = ______ rad viii)135 degrees = ______ rad viiii) 120 degrees = ______ rad
*April 8, 2008*

**trig**

A geologist stands on the shore of a lake in Ontario with a theodolite and finds that the angle of inclination to the top of a distant rock pillar is 28.5 degrees. He then walks 10 m along the shore at a 90 degree angle to his measurment, and finds that the angle to the same ...
*April 8, 2008*

**math riddle ALGEBRA WITH PIZZAZZ**

why are small balloons cheaper than large balloons? what happens to people who don't know toothpaste from putty
*April 6, 2008*

**science**

how does the total energy change when a falling rock hits the ground?
*March 31, 2008*

**health**

the nurse explains that the HIV virus is introuduced to the systemic circulation by the -----------,which are found in the mucous membranes i need so much help on this question i have been trying to figure this put for the past two days please help?
*March 17, 2008*

**History**

Can students under the age of 18 play a role in the American political system?
*March 10, 2008*

**us history**

why did radical political groups gain support in the early 1930s?
*March 9, 2008*

**us history**

what were some ways in which roosevelt administration restored hope to the nation?
*March 9, 2008*

**us history**

why did people criti cize and the new deal?
*March 9, 2008*

**us history**

what permanent changes occurred for labor unions as a result of the new deal
*March 9, 2008*

**us history**

why did people criticize fdr and the new deal? what did the 1936 election reveal about voters attitides toward the new deal?
*March 9, 2008*

**u shistory**

what permanent changes occurred for labor unions as a result of the new deal?
*March 9, 2008*

**Math(Solve the system)**

Ummm....huh?? I am more of a visual learner so maybe if it was worked out completly it would help a little more.
*March 6, 2008*

**Math(Solve the system)**

So I guess I have to: Solve the system using any algebraic method. I'm not sure how so here is the problem I'm stuck on. 9x-5y=-30 x+2y=-3
*March 6, 2008*

**Social Studies**

How many PEOPLE have served in World War I??
*March 5, 2008*

**Math(solving a quadratic by factoring)**

I see, thanks a lot.
*March 4, 2008*

**Math(solving a quadratic by factoring)**

These simple ones kill me: 16y^2=49 Thanks
*March 4, 2008*

**Math(solving a quadratic by factoring)**

Woo! Thanks a lot DrBob.
*March 3, 2008*

**Math(solving a quadratic by factoring)**

Ok I get most of the problems except for these last two. x^2-16=0 and x^2=36 I seem to have trouble with the simplest of problems and none at all with the hard ones.
*March 3, 2008*

**Math(factoring)**

Incredible. Thanks you two, you really helped me.
*February 29, 2008*

**Math(factoring)**

Wow, thanks, now there is one more type I am stuck on and it is: 6y^2-24
*February 29, 2008*

**Math(factoring)**

I need help with factoring trinomials completely. My teacher's example is: 2x^2-12x+18 2(x^2-6x+9) 2(x-3)(x-3) I need help with: 6x^2-26x-20 I just can't get this stuff so if you can please help me I'd greatly appreciate it.
*February 29, 2008*

**science =)**

THANK YOU SOO MUCH!
*February 25, 2008*

**science =)**

How do the local schools contribute to the weather forecast? thx a lot!!
*February 25, 2008*

**accounting**

how do you find retained earnings when. retained earnings, 245,200 net decrease in total assets, 37,400 net increase in A.R. 8,600 dividends declared and paid 33,600 proceeds from issuance of bonds 88,400 net loss for the year ended 23,00
*February 24, 2008*

**accounting**

oh yeah 5200000 cash
*February 24, 2008*

**accounting**

how do you find average price at which the shares were issued? common stock without par value, 4000000 shares authorized, 800000 shares issued, and 720000 shares outstanding
*February 24, 2008*

**L.A or C.A**

Hello everyone! I have a question about feature articles... How is it suppose to look like? Can you find me a feature article on anything so I can see the formate? well thank you! =)
*February 24, 2008*

**French- check-over**

i need to see something so when i write my work in it it fixes it for me in french
*February 24, 2008*

**statistics**

true/false test with 16 questions all answers are guessed what is the mean and std deviation can u tell me how to get the P(x) value
*February 21, 2008*

**english**

India Arie is a famous guitarist
*February 21, 2008*

**Physics**

A steady horizontal force F if magnitude 21N is apllied at the axle of a solid disk. the disk has mass 2.0kg and diameter of 0.10m. What is the linear speed of the center of the disk after it has moved 12m?
*February 18, 2008*

**Electricity**

A motor running at its rated power provides 2.6 lb-ft torque at its rated speed of 2020 rpm. The motor draws 5.6-A from a 230-V supply at a phase angle of 37 degrees. Determine the following: The horsepower delivered by the motor, The efficiency of the motor.
*January 24, 2008*

**AP Chem**

sorry, forgot to mention that its *cubic closest*
*January 1, 2008*

**AP Chem**

Sorry, I have one other question. How would I go about solving this problem? What fraction of the total volume of a closet packed structure is occupied by atoms? What fraction of the total volume of a simple cubic structure is occupied by atoms? Do i need to just plug in ...
*January 1, 2008*

**AP Chemistry**

Thank you so much!
*January 1, 2008*

**AP Chemistry**

Titanium metal has a body-centered cubic unit cell. The density of Titanium is 4.50 g/cm^3. Calculate the edge length of the unit cell and a value for the atomic radius of titanium. Ok, I know how to find the density using the atomic radius, but I'm having trouble working ...
*January 1, 2008*

**ib math studies**

IB stands for international baccalaureate. it's a rigorous program, kinda like AP but with different requirements.
*December 31, 2007*

**physics**

a 75kg skater is travelling at 15m/s stops suddenly on the ice. If the ice is at 0 degrees and it is assumed that all of the skaters energy is converted to heat, how much ice does he melt? (latent heat of fusion for water is 3.3x10^5 J/kg)
*December 16, 2007*

**ethics**

List and explain the legal provisions of Roe. vs. Wade.
*December 14, 2007*

**ethics**

According to W.D. Ross, what duties are binding on all moral agents?
*December 14, 2007*

**Algebra II**

Solve x^4 - 12x - 5 = 0 given that -1 + 2i is a root. I’ve used synthetic division to get the answers x = 1 +/- 2i , 1 +/- sqrt 2 I’ve having trouble checking the answers though because of that imaginary number. How can I check these kind of problems?
*December 13, 2007*

**Calculus**

In the multiplication shown below, the digits have been replaced by letters: different letters represent different digits, and the same letters represent the same digits. What was the origianl multiplication? ABCDE x 4 ====== EDCBA please help tried it many times can't get...
*December 12, 2007*

**Calculus**

What day of the week is 263 days from Monday? That is Monday 12-10-2007. Is it Wednesday?
*December 10, 2007*

**Calculus**

In the multiplication shown below, the digits have been replaced by letters: different letters represent different digits, and the same letters represent the same digits. What was the origianl multiplication? ABCDE x 4 ====== EDCBA please help tried it many times can't get...
*December 10, 2007*

**social studies**

what group(s) of people led the reforms during the 20th century ? why?
*December 10, 2007*

**social studies**

how did life on the farm change during the turn of the 20th centure
*December 10, 2007*

**science**

My teacher wants us to find another name for winter. Can anyone help me?
*December 9, 2007*

**Math**

this question does not make sense to me. Add the proper constant to the binomial so that the resulting trinomial is a perfect square trinomial. then factor the trinomail. X^2+21x+__ What is the constant term? What is the factored for of the trinomial? i just cant figure the ...
*December 6, 2007*

**Literature**

Book on Every day heroes. was trying to find book to have at home, teache won't let us take home. Need to do an essay.
*December 2, 2007*

**English**

OKay i need help thinking of more traits to describe oedipus. the question is: How do Oedipus's personal characteristics interact with his fate to bring about his downfall? The only trait i can think of is rash, but towrite a 500 word essay i think i need some more.
*November 28, 2007*

**forensics science**

what is the D antigen also known as?
*November 8, 2007*

**Chemistry**

I have a test on the general concepts of thermochemistry tomorrow. how should i study for it since its not based on problem solving, just concepts?
*October 24, 2007*

**English**

is the idea that latin culture in america is dieing out? i can answer all the points i just can put one main idea together. i can gather that he can not afford the instruments, and/or also latin cultural is dieing out or latin music is dieing
*October 19, 2007*

**English**

gleaming golden and silver are all contrast with christmas. i still dont understand the significance of Latin Night other then the insturments are al found in lati bands and Martin Espada is latin, but hes living in Massachusettes. do Latino not celebrate christmas? the phrase...
*October 19, 2007*

**English**

i understand that an apparition is a ghost like image. These are the thought that are goin hrough my head, its a lonley guy walking down the street on christmas, he sees this pawnshop with the instruments in the window. To him its a ghostlike band and he is signifing that the ...
*October 19, 2007*

**English**

I need help answeringthis question about a poem. i will write the instructions below..Thank you How does Martin Espada use imagery,setting, and figures of speech to convey the idea in " Latin Night at the Pawnshop"? the only problem i am having is understand what the...
*October 19, 2007*

**Algebra 2**

change x+3y=4 to x=-3y+4. substitute that into the second equation to get 2(-3y+4)-y=8, then solve
*October 11, 2007*

**Algebra 2**

you may have written the second equation down wrong. if it is 2x-y=8 then the answer is (4,0)
*October 11, 2007*

**english**

It's not A because "find" is not used. It's not B because "especially" is spelled correctly, so no correction is necessary
*October 11, 2007*

**Pre Calculus/Trig**

I've tried that multiple times, but I was told the answer should be more than one. I get something around .07
*October 11, 2007*

**Pre Calculus/Trig**

find the area of a circle inscribed in triangle ABC where a=9, b=13, and the measure of angle C=38 degrees
*October 11, 2007*

**Chemistry**

Thanks for your help!
*October 9, 2007*

**Chemistry**

The combustion of carbon monoxide is represented by the equation below: CO (g) + 1/2O2 (g) ----> CO2 (g) a) determine the value of the standard enthalpy change, for the combustion of CO at 298 K using the following info. C (s) + 1/2 O2(g) ----> CO (g) delta H at 298K = -...
*October 9, 2007*

**Physics**

Can you tell me if there is a formula to find out the wind pressure on the sides of a roof in different areas of the roof with different pitches. Thanks Nick
*October 8, 2007*

**14 line 10 syllable poem**

how to do it...what do they mean?
*October 2, 2007*

**Algebra**

what is the a~ all about? If it is a square root symbol then the solution looks like this: x + (2x-5)^(1/2) = 10 : move x to other side (2x-5)^(1/2) = 10 - x : square both sides 2x-5 = (10-x)^2 : expand the squared term 2x-5 = 100-10x-10x+x^2 : combine terms 0 = 105 - 22x + x^...
*October 1, 2007*

**Quanitive Methods**

Sorry, the formatting on the graph got messed up. It should be a horizontal line with two vertical lines sticking up at each end.
*October 1, 2007*

**Quanitive Methods**

Well, you know that you have 540,000 dollars to spend, so model x*18,000 + y*24,000 < 540,000. Next, you know that at most, you may buy 25 new cars, so x + y < 25. If you treat these two inequalities as equations, you can solve for the extreme points. That is say: x+y = ...
*October 1, 2007*

**science=///**

They ingest nutrients, they expel nutrients, they grow, they require water and reproduce. (eat, drink, poop, grow screw) Good luck!
*September 30, 2007*

**Math**

One trick that might help you out is to remember that powers subtract when dividing (and add when multiplying) So starting with the original equation, you can pull out all the constants (by putting them to the exponent power) then simply subtract the powers. For instance, the ...
*September 30, 2007*

**Calculus**

1) there's an identity for d/dx (cot x) which = csc^2 x. So the answer to 1) is csc^2 x + cos x. 3) use the derivative multiplying rule first *d(second) + second *d(first): y' = x*(-csc(x)*cot(x)) + csc(x)*1 -- there may be some simplification you can do, but I don'...
*September 30, 2007*

**calculus urgent**

Break the graph up into a bunch of increments, each with the same x-axis distance between them. The more the graph flips from up to down, the more increments you need. (The more you have, the better your derivative graph will be.) Write down the (x,y) coordinates of each point...
*September 30, 2007*

**calc**

The function f is defined by f(x) = x^3 - x^2 - 4x + 4 The point (a,b) is on the graph of f and the line tangent to the graph at (a,b) passes thru the point (0, -8) which is not on the graph of f. Find the values of a and b. I have no clue how to solve this I know the ...
*September 30, 2007*

**calculus**

The function f is defined by f(x) = x^3 - x^2 - 4x + 4 The point (a,b) is on the graph of f and the line tangent to the graph at (a,b) passes thru the point (0, -8) which is not on the graph of f. Find the values of a and b. I have no clue how to solve this I know the ...
*September 30, 2007*

**English**

You know for the story "The Prosepector's Trail" by Cathy Jewison. Im supposed to be Norman and write a letter to Jennifer 1 year after Jennifer left Norman. Would Norman want Jennifer back or would he want to have a divorce with her and leave her? Please help
*September 25, 2007*

**Math**

It's impossible.
*September 24, 2007*

**math**

thanks for your help
*September 15, 2007*

**math**

a rectangular prism 32x32x500 inside another prism 46x46x500. How to calculate the center of gravity for the larger prism?
*September 15, 2007*

**physics**

I though about the volume, this is what I have: F=72m^3x1000Km^3x9.8= 705600 KN/m^3 or 705.6 N/m^3. Is this right or no need to consider gravity?
*September 14, 2007*

**physics**

tank of water with L=6m, W=3m, H=4m. 1) Find the force on the bottom of the tank from water. (ignore atmosphere pressure). 2) If the door to the tank is 1.5m by 1.5m and it is 2.25m (center bottom)from the edge of the tank, what is the force on the door and the position of ...
*September 14, 2007*

**Calc 3**

T=100J r=.9j F=F (0i+1j+3k)/sq root 1^2+3^2) Replace the values on the formula and solve for F.
*September 13, 2007*

**calc**

(x2 - a2)/x-a x ≠ a 8 x = a At what value of a would the function be continuous?
*September 11, 2007*

**Math**

Thank you so much. I love you. xD
*September 11, 2007*

**Math**

Okay. I have questions like "Walks ten meters in 3 seconds" . How do I find her walking rate. After that I have to find an equation to represent the distance she walks in t seconds. Please help me...Im very confused and terribe at math
*September 11, 2007*

**English**

THANK YOU, Ms. Sue
*September 6, 2007*

**English**

Thank you again Ms. Sue may I ask your help with two other questions? Simple Subject: Gold miners were Jack's best customers. (gold miners) A cellular telephone is one example of this change. (cellular telephone)
*September 6, 2007*

**English**

Thank you, Ms. Sue what about CP That mountain is the tallest one around here. (in the tallest one around here) The fire destroyed the old house. (destroyed the old house) The Puppy limped toward the old man. (limped toward the old man) are my answers correct.
*September 6, 2007*

**English**

Complete Predicate. The Snake wrapped itself around the tree. (wrapped itself) is that the correct answer?
*September 6, 2007*

**science**

Are there any particular rules that govern whether or not a complex ion will form from a certain ion or do you just have to know them?
*September 3, 2007*

**science**

hi wassup
*August 27, 2007*

**science**

what is used for storing acids and bases?
*August 27, 2007*

**Check this please**

Avondale and Newtown are 45 miles apart. How many inches is this on a map with a scale 1inch=20miles? I set up a proportion: in/miles= 1/20=n/45 n= 2 and 1/4 in on this map 2 1/4 inches is correct. 1 inch = 20 miles 2 inches = 40 miles 1/4 inch = 5 miles =) Thank you for ...
*July 2, 2007*

**writing**

This is the assignment: Reread either Andy Rooney’s essay on page 96 or Sarah Penning’s essay on page. 97. Select either essay as your starting point and discuss the terms they write about. What is your reaction to the thesis of either in relation to accepted ...
*June 27, 2007*

**Chemistry**

Therefore Iodine would have an oxidation state of +1 not Br.
*June 13, 2007*

**Chemistry**

Iodine doesn't have an oxidation state of -1 in the molecule I-Br because it is a heteronuclear molecule. Br is more electronegative therefore it would have an oxidation state of +1.
*June 13, 2007*

**5th Grade math**

What is a partial-products algorithm. For example 87*65=? How do you do it and show your work? Here is how Chicago Math does it: 87 x65 multiply 80 x 60.....4800 multiply 7 x 60..... 420 multiply 5 x 80.......400 multlply 5 x 7 ........35 add the products.
*April 18, 2007*