Thursday
November 27, 2014

Posts by Valerie


Total # Posts: 178

geometry
Suppose you buy 1 ticket for $1 out of a lottery of 3,000 tickets. If the prize for the one winning ticket is to be $1,000, what are your expected winnings?
March 26, 2011

chemistry
35.0 g of an organic compound dissolved in 500. g of water have a freezing point of -3.72 degrees C. What is the molecular weight of the solute?
February 14, 2011

Algebra
Algebra - Damon, Wednesday, January 26, 2011 at 8:18am go ahead and graph it. Find some points x , y 0 , 12 1 , 10 -1 , 14 2 , 8 -2 , 16 3 , 6 -3 , 18 10 , 12 -10, 32 20 , 32 -20 52 30 , 52 -30 , 72 etc
January 26, 2011

Algebra
Graph the equations y=2|x-5|+2
January 26, 2011

College Algebra
#3 Choose the end behavior of the graph of the polynomial function. f(x) -x(x-3)(5x+2), I think I have to foil to get -5x^3-2x^2+15x+6 So I think this one rises to the left and falls to the right. Please let me know if I did these correctly. Thanks
January 22, 2011

College Algebra
#2 Choose the end behavior of the graph of the polynomial function. f(x) 3x^3+3x^2-6x-5. I got Falls to the left and rises to the right. Is this correct? Thanks
January 22, 2011

College Algebra
Choose the end behavior of the polynomial function. f(x)= -5x^5-9x^2+6x+1. I got left end up right end down. Is this right? Thanks
January 22, 2011

Geometry
Ok Dr. Russ helped me find one part of the question, but I still can't figure out the values of x that maximizes volume = in. Any help is appreciated. Thanks On a rectangular piece of cardboard with perimeter 11 inches, three parallel and equally spaced creases are made. ...
January 21, 2011

Geometry
Ok but I still don't know how to get the values of x that maximizes volume = in
January 21, 2011

Geometry
On a rectangular piece of cardboard with perimeter 11 inches, three parallel and equally spaced creases are made. The cardboard is then folded along the creases to make a rectangular box with open ends. Letting x represent the distance (in inches) between the creases, use a ...
January 21, 2011

business math
I'm trying to solve this problem: What sinking fund payment would be required at the end of each three-month period, at 8% interest compounded quarterly, in order to amount to 20,000. I just need to know how to work the problem correctly.
January 14, 2011

geology
Thank you sooo much Ms. Sue you have no idea how much better I feel!!! I shot my instructor an email to confirm or denie this but I am going to continue to research it as it is. Who knows when he will get back to me. Thank you again!!!!!!
January 11, 2011

geology
I found that same info but another site states the Lake Erie is part of the Lowland Plains. Are they the same as the Interior Plains?? I am so lost and trying to research for my final. Thanks for your help Ms. Sue!!!!
January 11, 2011

geology
Is Lake Erie considered a part of the Interior Plains?
January 11, 2011

AP Calculus AB
A farmer wants to create a rectangular pen, which will be divided into six separate sections, as shown in the accompanying diagram. If he has 600 feet of fencing to use, what outside dimensions will maximize the area of the pen?
December 12, 2010

Math Please Help
Which statement is true? A.Two angles can be complementary and equal. B.Two angles cannot be equal if they are complementary. C. An angle can be complementary only if it is 90°. D. Only three angles can be supplementary.
December 5, 2010

1st grade
read the clue
November 8, 2010

math
121
November 4, 2010

statistics
A researcher is interested in estimating the noise levels in decibels at area urban hospitals. She wants to be 90% confident that her estimate is correct. If the standard deviation is 4.13, how large a sample is needed to get the desired information to be accurate within 0.68 ...
November 2, 2010

statistics
The diameters of apples in a certain orchard are normally distributed with a mean of 4.77 inches and a standard deviation of 0.43 inches. Show all work. (A) What percentage of the apples in this orchard is larger than 4.71 inches? (B) A random sample of 100 apples is gathered ...
November 2, 2010

statistics
Assume that the population of heights of male college students is approximately normally distributed with mean m of 70.63 inches and standard deviation s of 6.47 inches. A random sample of 88 heights is obtained. Show all work. (A) Find the mean and standard error of the x bar...
November 2, 2010

statistics
A sample of 134 golfers showed that their average score on a particular golf course was 87.43 with a standard deviation of 4.53. Answer each of the following (show all work and state the final answer to at least two decimal places.): (A) Find the 99% confidence interval of the...
November 2, 2010

statistics
Given a level of confidence of 99% and a population standard deviation of 12, answer the following: (A) What other information is necessary to find the sample size (n)? (B) Find the Maximum Error of Estimate (E) if n = 78. Show all work.
November 2, 2010

statistics
Looking for help with some of my stats homework, I got parts of it but then hit a brink wall. Any help would be welcome. A recruiter estimates that if you are hired to work for her company and you put in a full week at the commissioned sales representative position she is ...
November 1, 2010

physics
the speed of a cyclist reduces uniformly from 2.5 m/s to 1.0 m/s in 12 s. (a) calculate the deceleration of the cyclist. (b) calculate the distance travelled by the cyclist in this time
October 31, 2010

Math
Why did Airhead eat the dollar he brought to school
October 26, 2010

Finance
Suppose you buy a 7% coupon, 20 year bond today when it's first issued. If interest rates suddenly rise to 15%, what happens to the value of your bond?
October 26, 2010

Trig
Find the general solution for the equation 4tanx+cotx=5?????? and the steps please? THANYOO!
October 18, 2010

9th grade
fuq math geeks
October 12, 2010

french
do you use le,la,l',les for this question? Ou,est-------- ordinateur?
October 6, 2010

math
how do you sketch a line with these characteristics: m>0 and b<0
August 23, 2010

English
Thanks! Yes, I noticed that awhile after I posted this...
January 24, 2010

English
I was wondering if someone could tell me how I can improve my thesis statement/opening paragraph. I'm writing an essay on hamlet from the perspective of formalism (examining a work of literature's language and structure). Here it is: Formalism is a type of literary ...
January 24, 2010

maths
Here are some expressions 1)pir^2l 2)2pir^2 3)4pir^3 4)abrl 5)abl over r 6)3(a^2+b^2)r 7)pirl The letters r, l, a and b represent lengths. pi, 2, 3 and 4 are numbers that have no dimensions. Three of the expressions represent volumes. Which ones are they? please could you help...
December 17, 2009

maths
the weird sign is pi
December 17, 2009

maths
Here are some expressions 1)ðr^2l 2)2ðr^2 3)4ðr^3 4)abrl 5)abl over r 6)3(a^2+b^2)r 7)ðrl The letters r, l, a and b represent lengths. ð, 2, 3 and 4 are numbers that have no dimensions. Three of the expressions represent volumes. Which ones are they? please...
December 17, 2009

Physics
I agree with the previous post except for the last part, it would be (1/4)*(2 pi)sqrt[(m+M)/k] instead.
November 19, 2009

chemistry
An alcohol has an OH- Functionality in it. Do you expect it to be a base? Why or Why not? I said it is a base b/c Alcohols have a slight tendency to lose the proton on the alcohol group, however less so than water, and so they do not significantly change the pH when added to ...
October 15, 2009

Chemistry
1. name one structural and one chemical difference between acetylene and ethylene. give rasons. 2. why is the benzene much less reactive than 1, 3,5-cyclohexatriene? 3. What causes cycloalkanes to have two less hydrogen atoms than similar alkanes that are open chain ones?
October 10, 2009

Chemistry
I am trying to answer my questions for thermal decomposition of malachite lab. I have moles of malachite in 1g= 0.0045 moles of Cuo produced= 0.0009 ratio of moles of Cuo produced per moles of malachite decomposed=0.0045/0.0009=5.1 the balanced euation = CuCo3*Cu9OH)2 ----->...
September 27, 2009

Psychology
sorry i stand corrected, it is the third assingnment on here that i am having trouble understanding
May 23, 2009

Psychology
I was trying to look up some information that would make me understand this assignment better myself. I really do not understand it, what it is trying to ask of me, what to write on, and thats why i was looking online, when i cam across this. I dont agree on how this person ...
May 23, 2009

literature
How do the seasons reflect Dexter's emotions in Fritzgerald's "Winter Dreams"?
April 11, 2009

re
what do christians believe about free will? Wha problems does suffering caus for religious believers? thanks
March 16, 2009

french mme sra
I think I have done all the corrections. Please could you tell me if there's anything else wrong. Thankyou Pour le petit déjeuner ce matin j’ai mangé une banane et des raisins et j’ai bu de l’eau mais d’habitude je mange un bol de cé...
March 6, 2009

french
thankyou so much your help is much appriciated
March 5, 2009

french
does this sound alright? my teacher wants 100+ words Pour le petit déjeuner ce matin j’ai mangé une banane et des raisins et j’ai bu de l’eau mais d’habitude je mange un bol de céréales et bois du lait, c’est sain. Pour le d...
March 5, 2009

chemistry
The composition of a propane clathrate was found to contain 40.1 mL of water. Assuming that all the cavities of the clathrate was filled with propane, how many grams of propane did the clathrate contain?
February 16, 2009

french
J'adore = i love J'aime = i like ????????????? Je n'aime pas = I don't like Je déteste = I hate what is a neutral opinion?
February 15, 2009

geography/ english
Would it make sense to say: "He hopes the violence would soon be assuaged"?
January 31, 2009

chemistry
can someone confirm that the functional group of cocaine is the ch3n group. thanks
January 11, 2009

science
the sun is actually about 865,000 miles in diameter, so 1cm of the model represents how many miles?
January 9, 2009

Stats
Find probability that a randomly selected TV will have replacement time less than 6 yrs. mean is 8.2 yrs standard deviation is 1.1 then provide warranty of 1% will be replaced what is the time length of the warranty
November 17, 2008

health
what are some legal consequences of abusing stimulants
October 28, 2008

Stat's
Thank you
October 26, 2008

Stat's
Choose the probability as a fraction in lowest terms a.5/164490480 b.5/1370754 c.1/1370754 d.1/164490480 determine probability of winning a lottery from which 5 numbers are drawn without replacement from the set of numbers 1 to 46. in order to win, the 5 numbers must be ...
October 26, 2008

physical sciences
a thunderclap 200m away delivers 3.75E^-5 W/m^2 of sound. What is the sound level in decibels? What is the intensity of the sound at 10m from the thunderclap? What is the sound level in decibels 10m from the thunderclap?
October 21, 2008

english
how do you write an ode poem of minimun of 15 lines/
October 16, 2008

percentage
If I put $5,000 in a CD for a miniumum of 3 years, the bank will offer 3.25% interest. How much interest will I earn after 6 years?
August 31, 2008

Chemistry
the rest of the question asks: what is the indicator when X= 1.5, 3.5, 6.1, 8.9?
April 8, 2008

science
fallow a drop o water through three states of matter. describe what is happening to the molecules as the water turns to gas than describe what is happening to the molecules when the water freezes into ice
March 4, 2008

science
fallow a drop of water through three states of matter. describe what is happening to the molecules as the water turns to gas than describe what happening to the molecules when the water freezes into ice
March 4, 2008

geology
Do all sedimetary rocks react with Hydrochloric acid? Check this site for your answer. http://www.geomore.com/Sedimentary%20Rock%20Chart.htm
August 9, 2007

Physics (pressure)
What is the total mass of the earth's atmosphere? The radius of the Earth is 6.37E6 m, and atmospheric pressure at the surface is 1.013E5 N/m^2 (or Pa). I tried this: 1.013E5 Pa = Mg/ pi(6.37E6)^2 1.013E5 Pa (denominator)= 9.8 M solve for M: I'm coming with different ...
May 3, 2007

social studies
what is the old japanese art of growing small trees called? bonsai
April 1, 2007

Poetry
I need to learn the different meters and rhyming patterns of poetry?? Thank you for using the Jiskha Homework Help Forum. First of all is a pdf file: 1. server.remc11.k12.mi.us/bstpract/bstpract/165/165.pdf 2. http://owl.english.purdue.edu/owl/resource/570/01/ 3. http://en....
March 20, 2007

algebra
i forgot to post these! f(x)=9x+4 and listed in interval notation also: f(x) x2+14x+40 in interval notation and: 1/x^2+81 (interval notation) and: x+11/x^2-121 (interval notation) and: f(x+2) f(x)=6x^2-x+7 You have listed a lot of functions but have said nothing about what the...
March 14, 2007

chemistry
This is like the other one I posted about. I have to predict the product. Zinc (s) + sulfuric acid (aq) ----> ____ Please and thank you! This is a single replacement type reaction. Products are ZnSO4 and H2. Same type as Al and HCl. how do you know that H2 is alone instead ...
February 27, 2007

chemistry
Can someone please help me with this problem? Predict the products. Aluminum(s) + hydrochloric acid (aq) ---> ________ aluminum chloride + hydrogen Correct. AlCl3 and H2 thanks
February 27, 2007

algebra
Can someone please help me do this problem? That would be great! Simplify the expression: sin theta + cos theta * cot theta I'll use A for theta. Cot A = sin A / cos A Therefore: sin A + (cos A * sin A / cos A) = sin A + sin A = 2 sin A I hope this will help. in my algebra...
February 18, 2007

Social Studies
I am doing a descriptive writting report on a famous place in Europe and I chose the Louvre Museum. I can't seem to find really any information can you help me? Thanks! Try a travel guide website like Frommer's or lonelyplanet http://www.louvre.fr/llv/commun/home_flash...
January 18, 2007

algebra
Can somebody please help me with these problems? Factor the expression on the left side of each equation. Then solve. 1)x^4-5x^2+4=0 2)x^4-8x^2+16=0 Please and thank you! 1) let y = x^2, then y^2-5y+4=0 (y-4)(y-1)=0 y = 4 or y = 1 x^2 = 4 or x^2 = 1 x = -2, +2, -1, +1 same ...
January 4, 2007

English
We must truly become our brothers’ and sisters’ keepers. Is this written correctly? OR should it be We must truly become our borther's and sister's keepers. OR We must truly become our brother and sisters' keepers. Because the statement applies ...
December 28, 2006

Linear Equations
Directions: Use what is given to write an equation of a line in STANDARD, SLOPE-INTERCEPT, AND POINT-SLOPE form. 1. m = 3 (0,4) s=B4=3 si=3x+4 ps=y-4=3x Are we doing these correctly? I do not know what those forms mean, but if the line goes through (0,4) with slope 3, the ...
December 20, 2006

Reading
"The Great Rot Hunt" - Are these right. 1. The traps that Father set did not work because they were (d.) not set correctly. 2. The narrator retionalizes killing the rat by comparing it to a (c.) deer. 3. The narrator realizes that, to his father, success in sports is...
December 20, 2006

Synonym/Antonym
Word bank: locality, finally, legally, equality, fatality, actually, really, totally, mentally, morally, nationally, punctuality, generally, personality, individually, originality, practically, formality, technicality, sentimentality completely (S)________?totally physically (...
December 13, 2006

analogies
first is to last as originally is to _____ storm is to weather as outgoing is to ____ heavens is to sky as virtually is to _____ text is to script as ethically is to _____ white is to black as copy is to ____ detail (S) for it ______?orginality Do you have a word bank or ...
December 13, 2006

The Holocaust
I need some important facts about the Ghettos in the Holocaust. AMOUNT OF FOOD GIVEN EACH DAY the ghettos depending on whitch area you are talking about where mostly small apartments on what was the poor side of town (before the Nazis). they where small, dirty, and the stuck 1...
June 15, 2005

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