Sunday
September 21, 2014

Posts by lena


Total # Posts: 997

Math!!
You already asked this questions before and NO ONE is going to answer it for you unless you show you're own thinking. This is a forum designed to help you with your problems. It is NOT a forum designed to have people complete your homework for you!
February 24, 2013

Math
No problem :)
February 24, 2013

Math
1 Bag = 4 Gifts Total # of party bags = 8 Total # of part bags + Denis = 9 So originally the # of gifts without Denis would have the following equation: 8 x 4 = 32 Now that Denis is coming we have 9 party bags: 9 x 4 = 36 OR (8 x 4) + 4 = 36 So you see that the mistake is ...
February 24, 2013

Algebra II
Essentially we've created a quadratic equation and we're solving it using factoring. If you don't understand how I solved this question, I can expand on my thinking. Let me know if it makes sense.
February 24, 2013

Algebra II
Total # of seats = 900 # of rows = R # of seats = S So according to the question, if we have R rows then we have R+11 seats Total # of seats = # of rows * # of seats/row 900 = R * (R+11) 900 = R^2 + 11R 0 = R^2 + 11R -900 0 = (R+36)(R-25) Therefore, you must have 25 rows with ...
February 24, 2013

The Lovely Bones
If anyone has read this novel could you please explain 2 things to me. 1) Is Ruth Connors able to see the dead? Like when she moves to NYC she writes about all the murdered women she finds. How does she go about doing that? Can see she Susie too? 2) How is Buckley able to see ...
February 24, 2013

MATHS -SALES TAX -plse URGENT-
There are 3 things we must figure out in the this question. 1) What is the full price of this item + tax 2) What is the full price of this item 3) What is the price of this item with the 15% discount 4) Shopkeeper profit For this whole problem let us assume that 'x' is...
February 24, 2013

Gen Math
Let me just correct the 2nd line I posted: "In the question we have been told that 'twice the # of boys' = 'twice the # of boys - 63' girls. " That is wrong. I meant to say: "The # of girls = twice the # of boys-63"
February 24, 2013

Gen Math
For this problem let us assume that 'B' represents # of boys and 'G' represents # of girls In the question we have been told that 'twice the # of boys' = 'twice the # of boys - 63' girls. Total # of students = B + G 228= B + (2B-63) 228 = B + 2B...
February 24, 2013

math
So 4 names went into the bowl. If Sam is the first person selecting then the chances of him pulling out his name are 1/4. 1/4 as a percent is 25%. The second person selecting, Pam, now only has 3 names left in the bowl. Therefore, the chances that Pam will select Sam are now 1...
February 22, 2013

Patho - Hyperkalemia and Heart Attacks
Could someone please explain why an increase in potassium would cause a decrease in HR? I need someone to really dumb it down for me so I can fully understand. i was thinking that more Ka+ would increase the HR but in my lesson, it said it would slow down HR. I don't ...
February 22, 2013

Math
Did you type this question properly? Should it be tan(something) :/ Did you mean tan^-1(x)?
February 22, 2013

Lang. Arts
I would also go with C. Option A seems wrong because the hard wind from the sea is actually quite dangerous and not at all comedic. Option B seems wrong because they seem to be at the harbour not at the market. The farmer's are coming from the open-ait market but we are in...
February 21, 2013

Lang. Arts
"Non-restrictive" means basically that the phrase or clause is not necessary to the meaning of the sentence. Therefore, I would go with option A.
February 21, 2013

Math
Let's make a math sentence about how much the car company charges. Flat Rate: $120 per week = $120 * W Additional Fees: $0.12 per mile = $0.12 * M Charge = Flat Rate + Additional Fees Now let's plug in what we know: $162 = $120(W) + $0.12(M) Here's where I run into...
February 21, 2013

math
What kind of shape is this? It's hard to help when we don't know what the figure looks like.
February 14, 2013

math
OK. So let's create a formula of some sort. So what do we know? - When we remove 15 L from 2/3 filled drum, we have only 3/5 of the drum full Let's change this to a mathematical sentence. Let's say that whole drum holds 'x' Litres So we can say the ...
February 13, 2013

math
This question is very similar to the one I helped you with above. You should take a look at that on for reference. If you still don't understand, let me know and I'll help you out.
February 13, 2013

Math
I think it would be best to draw a diagram for this sort of question. So John walks 20 km East. START ----------------> JOHN (@ 20km EAST) - So John is facing this direction --> - If you were to turn 270 degree facing --> then you would be facing downwards or South - ...
February 13, 2013

English - APA
I found (author's last name, year, page #) Thank you very much for sharing that resource!
February 13, 2013

English - APA
I'm writing a book review in APA and I need to cite a quote. Would it be similar to an essay where I would do the following: (Author's last name, date of publication, page number) (Brown, 1999, p. 75) Do I need to include chapters, as well? The novel I'm doing is ...
February 13, 2013

Biochemistry
that are all the information given
February 11, 2013

Biochemistry
The Go’ value for the hydrolysis of glucose-6-phosphate is -13.8 kJ/mol. Assuming a concentration of 4 mM for this molecule, what would the phosphate concentration be at equilibrium (G = 0). Remember to convert kJ to J.
February 11, 2013

stat
if the heights of men follow a normal distribution, and 99.7% fall between 5" and 7" what is the estimate standard deviation of the height?
February 2, 2013

chemistry help plz
OH-OH-benzene ring-CH=CH-NH2 is anyone knows the name of this compound?
January 14, 2013

Principles of Finance
Since M1 = currency + demand deposits + traveler's check + other checkable deposits therefore as er the information given in the question, M1 = 700+ 300 + 10 + 300 = $1410 billion.
January 13, 2013

Chemistry
ANKUR answer is D
January 11, 2013

chemistry
thanks a lotttttttt
January 11, 2013

chemistry
a) sp3d2 b)Slightly less than 90∘ 4.13346*10^-7
January 11, 2013

chemistry
(a) What is the pH of 50 mL of a 0.2M glycolic acid aqueous solution after adding 5 mL of 0.25 M KOH? The pKa of glycolic acis is 3.83 at 25 ∘C.
January 11, 2013

Chemistry
no 111
January 11, 2013

Chemistry
OOOOO SORRY B AND E
January 11, 2013

Chemistry
not right
January 11, 2013

Chemistry
something wrong ..
January 11, 2013

Chemistry
what about a?
January 11, 2013

CHEMISTRY
(c) Calculate the degree of polymerization n of polystyrene with a molecular weight of 3.091×106 g/mol.
January 5, 2013

chemistry
(c) What is the value of the degree of polymerization n of isotactic PB with a molecular weight of 3.091×105 g/mol?
January 5, 2013

chemistry help plz
what are the values of a,b,c and d in the balanced chemical equation aFe^2+(aq)+bAl(s)=cFe(s)+dAl^3+(aq) where a,b,c and d are the lowest possible whole numbers? a= b= c= d=
January 4, 2013

chemistry
(a) Cadmium telluride (CdTe) is a semiconductor witha band gap, Eg, of 1.45 eV. Calculate the value of the absorption edge of this material. Express your answer in meters.
December 14, 2012

chemistry
Show that a conventional x-ray generator is incapable of generating x-rays of wavelength as low as 10-11m. Do this by determining the identity of the target (in atomic number, Z) which would be needed to generate such x-rays.
December 14, 2012

chemistry
A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.35 kg m-3. Under these conditions the total surface area of the balloon is 0.57 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Calculate the rate of ...
December 14, 2012

Chemistry
2 and 4
December 14, 2012

chemistry
Methane (CH4) burns in oxygen to produce carbon dioxide and water vapor. The balanced equation is: CH4 + 2 O2 -> CO2 + 2 H2O What volume of carbon dioxide is produced when 3.2 L of oxygen are consumed?
December 5, 2012

chemisy
Methane (CH4) burns in oxygen to produce carbon dioxide and water vapor. The balanced equation is: CH4 + 2 O2 -> CO2 + 2 H2O What volume of carbon dioxide is produced when 3.2 L of oxygen are consumed?
December 5, 2012

Determination of ASA Content of Tablets Lab Report
Not asking for answers necesarily but I would to know how to approach each question Mass of pure acetylsalicylic acid (ASA) : .508 g Dilution Absorbance (a.u.) 2:11 .116 4:11 .259 6:11 .392 8:11 .502 10:11 .548 Mass of tablet : .380 g Absorbance read on the Spec 20 : .314 a.u...
December 5, 2012

Math
John's Collection: 10 coins in all 2 fewer quarters than dimes 2 quarters Q = D = N =
November 12, 2012

Match
John's Collection: 10 coins in all 2 fewer quarters than dimes 2 quarters Q = D = N =
November 12, 2012

Chem
Thanks!
November 1, 2012

Chem
What pressure (atm) is needed to confine an ideal gas to 68.0 L after it has expanded from 44.0 L and 2.3 atm at constant temperature?
November 1, 2012

CHEM
Silicon carbide, commonly known as carborundum, is a very hard and abrasive substance. The compound is prepared by heating silicon dioxide in the presence of graphitic carbon: SiO2(s) + 2C(s) --> SiC(s) + CO2(g) How many grams of silicon carbide can be formed from 55.0 g of...
October 18, 2012

CHEMISTRY
What element is represented by this electron ground state configuration : [Kr] 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d2 7s2 Is this really Krypton?
October 18, 2012

CHEMISTRY
What element is represented by this electron ground state configuration : [Kr] 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d2 7s2 Is this really Krypton?
October 18, 2012

CHEM
Arrange the following in order of increasing atomic radii from smallest to largest. Mg Ra Sr Be Ca Ba
October 18, 2012

Chem help
Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have? D. How many valence ...
October 17, 2012

Chem
Balance the following chemical equation (put the coefficients in order) Fe + O2 + H2O → Fe(OH)
October 10, 2012

literature
is a right
July 22, 2012

Math
Use the method of substitution to solve the linear equation! 6a=6-b 6a=5-b please help I don't get it it needs to be an ordered pair.
June 26, 2012

Chemistry
in the presence of NH3, Cu+2 forms the complex ion [Cu(NH3)4]+2. If the equilibrium concentrations of Cu+2 and [Cu(NH3)4]+2 are 1.8x10^-17M and 1.0x10^-3M respectively, in a 1.5 M NH3 solution, calculate the value for the overall formation constant of [Cu(NH3)4]+2. Cu+2(aq)+ ...
April 3, 2012

english
No, because the verb should be past tense. The sentence is referring to Fredericksburg who is no longer in Comance territory.It is in the past that he is in Comanche territory. The sentence should be: Fredericksburg used to be in Comanche territory.
April 2, 2012

business
The answers are correct!
March 7, 2012

Chemistry please help
State Dalton’s Postulates? In light of modern knowledge, what are the inaccuracies in Dalton’s Postulates? I know Dalton's postulates: -All matter consists of tiny, indivisible particles called atoms that cannot be created or destroyed -Atoms of one element ...
February 19, 2012

Science
Which of the following is a way to improve the efficiency of a heat engine? increase Qh reduce Qh reduce Wnet increase Qc A What are the energies associated with atomic motion called? kinetic energy potential energy bond energy internal energy D A 0.10 kg piece of copper at an...
January 23, 2012

Math
Mathman couldn't resist the grooving tunes inside and paid his $5.00. He was heading straight for the punch bowl when he noticed a witch mixing it together using a solution which was 60% lizard drool and another that was only 25% lizard drool. If she wanted to make 30 ...
October 27, 2011

Fourth grade math
How do I write an expanded algorithm????
October 27, 2011

Math
Wednesday
October 26, 2011

geometry
When you solve the equation above, you'll get a value for the base of the triangle. Simply multiple that value by 3 in order to get the height.
September 14, 2011

geometry
First let's look at the formula to find the area of a triangle. Area = (base x height)/2 Now, the question tells us that the height is 3x the base. Therefore, it is safe to say that if B is the base then the height must be 3B. We can then re-write the formula: 27 = ( B x ...
September 14, 2011

algebra
This is what I think you would have to do: 1) Find 6% of $350,000: (0.06 x 350000) 2) Add the # you find in 1) to the base salary to get the total pay for the year
September 14, 2011

Spinal Cord Injury @ T5
Could I ask you a question. If T5 is completely injured, does that mean that all the levels below do not work as well?
September 14, 2011

Spinal Cord Injury @ T5
I've been trying to find out what would happen to a person with complete spinal injury @ the level of T5. Is there a chart or something I could look at that would explain what would occur at each level of the spinal cord? I keep googling stuff and it keeps telling me this ...
September 14, 2011

MATH HELP PLEASE
Well this is my thinking. The factors of 33 are as follows: 1 x 33 3 x 11 Therefore, you wouldn't be able to fill all 4 kennels if you used all the dogs. The only thing that makes sense to me is to not put one of the dogs in the kennel (which gives you 32 dogs): 4 x 8 = 32...
September 14, 2011

geometry
If F is the midpoint of segment EG then you know that the distance from E to F and the distance from F to G should be equal. Therefore EF = FG. Knowing that you can solve for X by the doing the following: EF = FG 2X + 11 = 53 2X + 11 - 11= 53 - 11 2X = 42 2X/2 = 42/2 X = 21
September 14, 2011

Physics
For the Law of Sines state the formulas, explain them in your own words, and draw a diagram illustrating one of them.
September 11, 2011

Pre-Calc
x<log(lower number=6)144 I know you would do log144/log6, but I'm not sure if the sign is switched or not.
September 10, 2011

Pre-Calc
Find the area of the region between the graph of y=1/x, the x-axis, and the vertical lines x = 1 and x = 4.
September 10, 2011

Spinal Cord Injury @ T5
I'm not quite understand how spinal cord injuries work. If you have a complete spinal cord injury @ T5, what does that mean in terms of what you can do? There is so much info on the cervical region of the spinal cord but I can't find much on the thoracic especially T5...
September 9, 2011

Pre Cal/ domain
1. sqrt x^2-5x-14 2. cube root x-6/sqrt x^2-x-30 3. y= ln2x-12
July 24, 2011

essay writing
Oh, I never thought of that. Thanks a bunch!
June 6, 2011

essay writing
my prof said that I used next I will discuss way too much so now i'm thinking of other things to say other than discuss but I can't think of anything. this is when im stating my arguments in my introduction. any suggestions?
June 6, 2011

microeconomics
TRUE OR FALSE: 9. Assume that the Minimum Wage has increased to $14 from $10. If the total labour-income at the wage of $14 is higher than the total labour-income at the wage of $10, it means that the labour-demand with respect to wage is elastic. FALSE. I don't understand...
May 31, 2011

Economics
My micro econ prof was trying to explain marginal analysis and he said the following: If your marginal happiness is 0 then you are maximally happy. I don't understand this at all. Could someone explain this to me? Thanks!
May 9, 2011

Microeconomics
Thanks so much, Ms. Sue!
May 4, 2011

Microeconomics
I'm just confused about this one concept. My lecture notes say the following: Markets for goods + services: - firms sell - households buy Markets for Factors of Production: - Households sell - Firms buy I don't understand the "factors of production". What ...
May 4, 2011

english
write the possessive nouns that could replace each group of word below
April 8, 2011

Business - royalty
Thanks a bunch, Ms. Sue.
April 3, 2011

Business - royalty
I'm watching shark tank and they keep going on about royalty. They'll say something along the lines of: I'll give you 500k for 30% equity and 10% royalty. I don't really understand all this business stuff but what I think is going on it that they're giving ...
April 3, 2011

Polynomial- Doublecheck2
1) Correct 2) Correct 3) Correct 4) Not to sure how to solve the question 5) Correct 6) Correct 7) Correct 8) Correct 9) Correct 10) Correct 11) Correct 12) Do not understand description of model so I'm glad you're sure of this answer 13) Correct 14) Correct 15) Correct
April 3, 2011

chemistry
A studen is asket to calculate the amount of heat involved in changing 10.0 g of liquid bomine at room temperature (22.5 C) to vapor at 59.0 C. To do this, one must know specific heat (0.474 J/g*C), boiling point (59 C), and heat of vaporization (29.6 kJ/mol) of bromine.In ...
March 30, 2011

math
In this scenario you can't reduce the fraction because 199 is a prime #.
March 30, 2011

math
19.9% - percentages are always out of 100 so this is the same as saying the following: 19.9/100 - however it's not proper form to be using a decimal in a fraction so what you could do it move the decimal over to the right for both the numerator and denominator: 199/1000 - ...
March 30, 2011

Anatomical Terminology
Ohh ok; thanks a bunch! :D
March 30, 2011

Anatomical Terminology
So my prof said that the submucosa contained mucous glands proper. So according to the link you sent me I'm going to assume the glands are embedded within the submucosa. I still don't understand 100%. What's the point in even saying proper. Why couldn't he just...
March 30, 2011

Anatomical Terminology
I often here my prof use the word proper as in "mucous glands proper". What does the word proper mean?
March 30, 2011

geometry
What do the figures look like? State the shape and the dimensions and I'll try to help.
March 30, 2011

algebra
Well 3 is a whole number so you know your ones value is 3. Then look the 1/2. 1/2 is = 0.5. So 3 1/2 is 3.5 as a decimal.
March 30, 2011

reserch
This might be silly but one thing that immediately came to mind was the fact that our eyebrows catch our sweat so that it does not go into our eyes. Maybe eyebrows could be more thicker due to increased sweating in the warmer environment.
March 29, 2011

general knowledge
Assuming this problem was given to you on the 17th of march 2011, the answer would be TODAY. But if that's not the answer, let me know and I'll keep thinking.
March 29, 2011

math i need help plz!
I've been working on this for a while but I cant seem to get anywhere with this. I created this equation. 360(x) + 270 (y) = $ 45,990 360 (3x/4) + 270 (x/3) $27, 630 There's a starting point. If I figure out how to solve this I'll post.
March 29, 2011

algebra 2
Ok so what you would do in this scenario is fill in the sides for a and b. 10^2 + 7^2 = c^2 ( c is the diagonal AKA the hypotenuse) 100 + 49 = c^2 149 = c^2 sq root of 149 = c 12.21 = c (this # is rounded) But that's what your diagonal should be.
March 29, 2011

algebra 2
You want to use Pythagorean theory here. So a^2 + b^2 = c^2. a and b would be the 2 side length and then solve for c. Do you think you can take it from here? If you tell me what you got as a answer I can figure it out and let you know what I got.
March 29, 2011

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