Friday

March 27, 2015

March 27, 2015

Total # Posts: 2,435

**Precalculus**

"Show that x^6 - 7x^3 - 8 = 0 has a quadratic form. Then find the two real roots and the four imaginary roots of this equation." I used synthetic division to get the real roots 2 and -1, but I can't figure out how to get the imaginary roots. I checked HotMath but...
*September 20, 2009*

**MATH 157**

Use the midpoint formula: x coordinate: (1st_x + 1st_y)/2 y coordinate: (2nd_x + 2nd_y)/2 So you could put it into an equation like this: 2 = (0 + x)/2 (for the x coordinate) -8 = (0+ y)/2 (for the y coordinate) I know it may have seemed confusing how I wrote it out, so please...
*September 20, 2009*

**AP English 11**

Ohhhhh I totally get it!! Thanks SraJMcGin and Ms. Sue! :D
*September 17, 2009*

**AP English 11**

Tomorrow in class, we have to write an essay about the play "The Crucible". This was the prompt our teacher gave us: "How was the play true? 1)when it was written 2)about when it happened 3)today as it is read" Does ANYONE understand this prompt and what it...
*September 17, 2009*

**Precalculus**

I'm HOPING this is the last problem I need help on.. :-/ List the possible rational zeros of f using the rational zero theorem. f(x) = 2x^3 - x^2 + 5x + 6 I applied the rational zero theorem, but none of the factors worked :(
*September 17, 2009*

**Precalculus**

Ohhh I see. Thanks so much!! :D
*September 17, 2009*

**Precalculus**

"An aquarium with length x, width x-10, and height x-5 holds about 750 cubic feet of water. Find all real solutions of the equation (I wrote it) 750 = x(x-10)(x-5)." I got the volume equation correct, right? I've tried dividing the factors of -750 by the factors ...
*September 17, 2009*

**Precalculus (algebra review)**

Omg. I feel like an idiot *bangs head against wall*. Soooo it would be (3x-2)(9x²+2x+4)?
*September 16, 2009*

**Precalculus (algebra review)**

grrr i mean [2/3]x in the middle of the second equation
*September 16, 2009*

**Precalculus (algebra review)**

Never mind, I think I just got it xD is this what it looks like factored out? (x - 2/3)(x^2 + [2/3] + 12)
*September 16, 2009*

**Precalculus (algebra review)**

My mind is coming to a blank as to how to factor out this polynomial: 27x^3 - 8 Any help is greatly appreciated!! :D
*September 16, 2009*

**Pre-Algebra**

1. 33 2. -26 3. 40 4. -69 5. -16 6. 12 7. -82 8. 33 9. 72 10. -43 11. 99 12. -73 13. 76 14. 181 TADA!
*September 15, 2009*

**Algebra**

13 is 76
*September 15, 2009*

**Algebra**

WHAT IS 13!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*September 15, 2009*

**Pre-Algebra**

I am awesome!!!!
*September 15, 2009*

**Geometry**

Find the value of the variable and VW if V is between U and W. UV=2,VW= 3x, UW=29 UV = r, VW = 6r, UW =42 UV = 4p - 3, VW = 5p, UW =15 UV = 3c+29, VW = -2c-4, UW = -4c Need a site to explain how to do these. Teacher not clear on explaining.
*September 15, 2009*

**Precalculus**

Never mind, I figured it out xD
*September 15, 2009*

**Precalculus**

"If 2 is a zero of a polynomial function f(x), name a factor of f(x)." Any help is greatly appreciated! :D
*September 15, 2009*

**Precalculus**

For our homework we had to read this one section which demonstrated the location principle (just in case this has a different name, I'll post it here:) "If P(x) is a polynomial with real coefficients and a and b are real numbers such that P(a) and P(b) have opposite ...
*September 14, 2009*

**9th grade**

what is an interior deserts
*September 14, 2009*

**Precalculus**

Ohhhhhh i totally get it now! Thanks!! :D
*September 14, 2009*

**Precalculus**

I usually know how to do these types of problems, but the second variable just threw me off balance.. 47. A rancher has 200 feet of fencing to enclose two adjacent rectangular corrals. What dimensions will produce a maximum enclosed area? (the diagram is of two adjacent ...
*September 14, 2009*

**home economics**

what is churned food turned into a thick liquid?
*September 13, 2009*

**7th grade history**

Why is history important to be studied? Include 3 events in history as supporting evidence. How are these events relevant today?
*September 13, 2009*

**US History**

Why is history important to be studied? Include 3 events in history as supporting evidence. How are these events relevant today?
*September 13, 2009*

**Math**

Would an estimate for the product of 34 and 56 be greater or less then the exact answer
*September 13, 2009*

**Wild Life Biology**

I don't know what you'd name it, but mothers generally defend their young if something they think is dangerous comes by. I think you could call that instinctive, anyway :)
*September 12, 2009*

**Math **

You're very close. However, you solved the equation like this: a^2 + b^2 = c 5^2 + 2^2 = c 25 + 4 = c 29 = c I think you forgot to mess with c^2: a^2 + b^2 = c^2 a^2 + 2^2 = 29^2 a^2 + 4 = 841 (once you subtract 4 from 841, you must take the square root of both sides) a^2...
*September 12, 2009*

**Math **

You solve for a using a^2 + b^2 = c^2 because it is the unknown value. I'm not exactly sure if that was what you were asking..
*September 12, 2009*

**MATH**

Does c=29? If so, use the Pythagorean Theorem and solve for a. a^2 + b^2 = c^2 a^2 + 2^2 = 29^2 a^2 + 4 = 841 ...
*September 12, 2009*

**algebra**

It gives you the value of x, so substitute that value into the first equation, like this: x + 3y = 2 x = 9 - 3y 9 - 3y + 3y = 2 9 = 2 Somehow, you get 9 = 2, which is DEFINITELY not correct, so maybe there was a typo in typing out the question?
*September 12, 2009*

**algebra**

All of the denominators in the equation have a common factor 4, so multiply both sides of the equation by that. 4( 5/2x + 1/4x = 5/4 + x ) 10x + x = 5 + 4x Bring the variables to one side of the equation and all the constants to the other side and solve for x.
*September 12, 2009*

**algebra**

-0.6x < -12 Divide both sides by -0.6. Because you are dividing by a negative number, you must flip the equality sign. x > 20 I hope you are actually looking to get HELP from these answers, not just copying the answers....
*September 10, 2009*

**algebra**

The coordinate (-4,5) is an (x,y) coordinate -- so, x = -4 and y = 5. Plug x and y into the equation 4x + 8y = 1 4(-4) + 8(5) = 11? -16 + 40 = 11? 24 = 11? 24 does not equal 11, so the coordinate (-4,5) is not a solution of the equation.
*September 10, 2009*

**Chemistry conversions check**

Oh okay thank you very much! :D
*September 10, 2009*

**Chemistry conversions check**

I'm sooooooo not sure if I'm doing this right, but can someone check it please? Thanks :)) 5) Determine the mass in grams of 3.01 x 10^23 atoms of Cl (element) I got 17.5 grams...is this right?
*September 10, 2009*

**english**

what was the plot for the book twisted?
*September 7, 2009*

**algebra 1**

Area = L * W Perimeter = 2L + 2W W = L - 80 So, plug in the width formula into the perimeter equation, which would look like this: 640 = 2L + 2(L-80) 640 = 2L + 2L - 160 640 = 4L - 160 800 = 4L L = 200 It looks like you don't even need the information about the area of the...
*September 3, 2009*

**Precalculus**

Yeah it confuses me too :( thanks for your help though, I appreciate it! :D
*September 3, 2009*

**Precalculus**

I know i isn't considered a real coefficient, but when you multiply it out shouldn't there be an ix as you're working it out?
*September 3, 2009*

**Precalculus**

Write the simplest polynomial equation with real coefficients having roots -i and 4. I have noooooo idea how to even start this one :( I thought you could start backwards with synthetic substitution but it didn't work. Any help on this is greatly appreciated!! :D
*September 3, 2009*

**Precalculus**

I'm sorry I'm posting so many questions, I promise this is the last one tonight :) The leading coefficient of a cubic polynomial P is 2, and the coefficient of the linear term is -5. If P(0)=7 and P(2)=21, find P(3). I DO NOT understand how to even start this one. I ...
*September 1, 2009*

**Precalculus**

Whoops, I meant we had to find the value of the function K(x^2), not where K(x)=x^2. Sorry about that lol
*September 1, 2009*

**Precalculus**

K(x) = x^2(x^2 + 16), where K(x) = x^2. I got K(x^2) = x^8 + 16x^4. Is this right? Thanks :))
*September 1, 2009*

**science**

The formula for density is p = m/v, where p is density, m is mass, and v is volume. First, you would figure out the volume by: V = 3 cm * 3 cm * 3 cm V = 27 cubic centimeters Plug everything that you know into the formula: p = 27g / 27cm^3 p = ? g/cm^3 Hope this helps! :)
*September 1, 2009*

**Reading**

Check out Sparknotes, Cliffsnotes, PinkMonkey, etc. to see if any of the summaries answer your question. Hopes this helps!
*September 1, 2009*

**Precalculus problems check?**

Thank you!! :D
*September 1, 2009*

**Precalculus problems check?**

Sorry the last "anonymous" was me. xD
*September 1, 2009*

**Precalculus problems check?**

By the way, in the first problem in the parentheses it's supposed to be like "one minus the square root of 2". Sorry if that wasn't clear :-/
*September 1, 2009*

**Precalculus problems check?**

Did I do these two problems right? P(1-sqrt2) = 8x - 4x^2 P(1-sqrt2)= -4 P(2/x)= 8x - 4x^2 P(2/x) = x-1 I think when the answers are plugged back in, the equation is supposed to equal zero, but I don't get this; however, I always redo each problem with different methods ...
*September 1, 2009*

**ACCOUNTING CONFUSED!! HELP**

Andy Wright,D.D.S., opened a dental practice on January 1, 2008. During the first month of operations the following transactions occurred. 1. Performed services for patients who had dental plan insurance. At January 31, $875 of such services was earned but not yet recorded. 2...
*September 1, 2009*

**U.S. History**

Thank you! :)
*August 28, 2009*

**U.S. History**

Why didn't Britain just raise taxes in England during the French - Indian War?
*August 28, 2009*

**Macroeconomics**

Why is the tax multiplier smaller than the government spending multiplier?
*August 25, 2009*

**Macroeconomics**

Why is the real investment multiplier smaller for local communities then for the nation?
*August 25, 2009*

**math**

Oh DUH that's what place value is. Maybe it's time I go back to school!
*August 17, 2009*

**math**

I don't think I know what place value is, but it sounds like there is enough books I guess. It depends on how many books is required for each student, which is not given here.
*August 17, 2009*

**MATH**

that makes no sense at all because (1) you have ten TIMES as much flour so why would you divide and (2) 1.1 is not anywhere close to being in between 40 and 50
*August 17, 2009*

**MATH**

A baker needs between 40 and 50 pounds of a flour-sugar mixture that contains ten times as much flour as sugar. What are the possible weights of flour the baker can use? Would I set it up like: 40+10x<x<50+10x
*August 17, 2009*

**CHEMISTRY**

What do you think happens to mass when chages take place?
*August 16, 2009*

**ALGEBRA 2**

Mrs. Smith drove at a rate of 45 mi/h from her home to her sister's house. She spent 1.5 hours having lunch with her sister. She then drove back home at a rate of 55 mi/h. The entire trip, including lunch, took 4 hours. How far does Mrs. Smith live from her sister? I set ...
*August 16, 2009*

**ALGEBRA 2**

thanks. i had that but instead of subtracting i was adding for some reason.
*August 16, 2009*

**ALGEBRA 2**

A plane takes off from an aiport and flies east at a speed of 350 mi/h. Ten minutes later, a second plane takes off from the same airport and flies east at a higher altitude at a speed of 400 mi/h. How long does it take the second plane to overtake the first plane? I have ...
*August 16, 2009*

**math**

Okay great thank you so much that makes much more sense!
*August 16, 2009*

**math**

I have no idea where to start! *A quick quiz consists of 3 multiple choice problems, each of which has 4 answers, only one of which is correct. If you make random guesses on all 3 problems, (a) What is the probability that all 3 of your answers are incorrect? (b) What is the ...
*August 16, 2009*

**AP English**

Thank you! :)
*August 15, 2009*

**AP English**

I have to read the Grapes of Wrath and find 24 quotes to analyze. Some of the quotes have to be biblical allusions (from even-numbered chapters), and the others have to be a rhetoric device. I'm almost done with the book, but I've only found maybe 13 quotes. Even our ...
*August 15, 2009*

**math**

Woah. I was totally wrong lol. I guess the my summer out of algebra II has been showing xD
*August 15, 2009*

**math**

1.438244794498223 ---> whenever you need a scientific calculator, check out the one on the ecalc website.
*August 15, 2009*

**trig**

I need to find all solutions of the given equations for the indicated interval. Round solutions to three decimal places if necessary. 1.) 3sin(x)+1=0, x within [0,2pi) 2.) 2sin(sq'd)(x)+cos(x)-1=0, x within R 3.) 4sin(sq'd)(x)-4sin(x)-1=0, x within R 4.) sin(x)+1=cos(x...
*June 21, 2009*

**Geography**

How long s the amazon river
*June 17, 2009*

**poetry**

What is the significance of Cerberus in Sylvia Plath's poem "Fever 103"?
*May 28, 2009*

**physics**

Carol drops a stone into a mine shaft 122.6 m deep. How soon after she drops the stone does she hear it hit the bottom of the shaft?
*May 26, 2009*

**English**

The following sentence contains a dangling or misplaced modifier. Rewrite the sentence so that its meaning is clear. 7. Walking the dogs in the park on Sunday afternoon, it began to rain hard. I totally don't understand how to rewrite this sentence :( Any help is greatly ...
*May 25, 2009*

**math**

I need help for my math homework (x+6)(x-2)
*May 25, 2009*

**11th grade**

my question is how do i get this in simplest form -15 - 23 and 4/9 * 3/2
*May 18, 2009*

**math**

In accounting, what is the form that accompanies an employer's payment of social security, Medicare, and employee's federal income taxes?
*May 18, 2009*

**A Midsummer Night's Dream, Act 4**

"The fourth act opens and ends with Bottom at center stage. What is your opinion of Bottom's character? How might he be the antithesis, or opposite, of Theseus's character?" Does anyone know how to answer the last part of the question? I didn't even ...
*May 9, 2009*

**spanish**

I think it would be C. estas, because it is the conditional tu form of the verb "to be". You wouldn't use A. eres because that is the unconditional form. Guapo means good-looking, which can change any day. (sounds sad but true!)
*May 9, 2009*

**Math**

How do you subtract fractions? How do you divide frations?
*April 29, 2009*

**Math**

A class is made up of 10 boys and 2 girls. Half of the boys wear glasses. A student is selected at random from the class. What is the probability that the student is a boy with glasses? My Question is, I don't know how to do Probability.
*April 27, 2009*

**6th grade math**

45 miles in 60 minutes
*April 22, 2009*

**English**

Attacked, assaulted, mugged, etc.
*April 21, 2009*

**Math**

No problem :) glad I could help!
*April 20, 2009*

**Math**

Correct me if I'm wrong, but there are no two consecutive integers that add up to 48. However, if you were finding two consecutive NUMBERS that add up to 48, your equation would look like this: x + (x+1) = 48 x being the first number, (x+1) being the consecutive number. ...
*April 20, 2009*

**Honors Biology**

"Describe how antibodies are produced and what they do in the response to infection." I've been looking all over my textbook and the internet, but for the life of me I cannot find what I'm looking for! Any help is greatly appreciated!! :)
*April 20, 2009*

**math**

The word I got was "lantana", but I don't know what that has to do with math because it has to do with spikes on flowers. Google search "word descrambler" and try what you see.
*April 20, 2009*

**Math-Geometry**

Solve for X using the side-splitting theorem for a triangle: upper left= 6x-10, upper right= 5x, lower left= 4x+8, lower right=4x
*April 19, 2009*

**4th grade math**

i have a worksheet from my teacher that i dont really understand i was wondering if someone could help me please thank you very much Emily 4th grade
*April 18, 2009*

**10th grade Living Environment**

can u indentify 3 activities of a living and define them?
*April 15, 2009*

**science**

ok thank you!!!
*April 9, 2009*

**science**

Can you please help me!!!
*April 9, 2009*

**science**

I can't find them and it's not homework.
*April 9, 2009*

**science**

ok i have a couple questions. 1. How has life changed throughout Earth's history? 2.What are three things that fossils tell us about earth's past? 3.What is radioactive dating? how do scientists use parent and daughter elements to determine the age of a fossil? 4.What ...
*April 9, 2009*

**6th grade math**

84,508 write in word
*April 6, 2009*

**Physics**

Change the 7 minutes into seconds (60 seconds per minutes) and add that to the 29.45 seconds. Then divide 3000 by that number.
*March 29, 2009*

**american education**

Progressivism: a political and social term that refers to ideologies and movements favoring or advocating progress, change, improvement, or reform, as opposed to wishing to maintain things as they are. Reconstructionism: Reconstructionism attempts to re-establish historical ...
*March 29, 2009*

**Physics**

The goal of this problem is to find his speed in meters per second. This is technically meters DIVIDED by seconds, so divide 100 by 9.92. So, his average speed in the race was about 10.08 meters per second. Hope this made sense! :)
*March 29, 2009*

**Physics E=mc^2**

I don't know what kind of formula it is, but I know that E=mc^2 is ENERGY = mass * (the speed of light)^2
*March 29, 2009*

**French**

How do you say (a) What is your family like (b) When is your birthday in French?
*March 26, 2009*

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