Thursday
April 2, 2015

Posts by Matthew


Total # Posts: 606

English
Writeacher, I urgently need you to revise the introductory part of Chapter 10 (Dr Jekyll and Mrs Hyde). Can you check tenses,please? 1) In Chapter ten Dr Jekyll comes to the realization of the primitive duality of man. He admits that man is not truly one but two. He is sure ...
March 18, 2012

English
I urgently need to check this paragraph. I need to revise word choice, punctuation, sentence connectors and grammar. I really hope you can help me. 1) The 18-th century novels represent the contemporary middle-class and its virtues and features; so the hero is always a self-...
March 18, 2012

English
Could you please check these sentences? Thank you very much, Writeacher. 1) Your paragraphs show a good knowledge of the literary contents. As to the grammar, you are still unsure in the use of tenses and prepositions. 2) As to cohesion, you failed to write an introduction or ...
March 18, 2012

English
I left out the following sentences. Thank you very much. 1) The sense of reward and punishment followed the Puritan ethics of the middle class. (but not: the rewards and punishments followed.....) 2) Other important "themes" are time and place, which are decribed in ...
March 18, 2012

English
Writeacher, I urgently need you to check these sentences. Thank you. 1) You forgot to mention the fact that Robinson keeps himself busy by writing (keeping) a diary using the paper, pen and ink he finds on the wrecked ship. 2) He realizes his gunpowder is running out. 3) The ...
March 18, 2012

statistics
Times for a surgical procedure are normally distributed. Method A has a mean of 28 minutes and a standard deviation of 2 minutes for completion. What is the probability that a surgical procedure conducted by method A takes at most 33 minutes to complete?
March 17, 2012

English
Could you please check these other sentences? They are the last on the same topics. Thank you. 1)You can't get around it: you must tell him the truth. 2) You can't get out of it: you must tell him the truth. My dad took a day off to take me to the sea (Or to the ...
March 17, 2012

English
I left out a few sentences. Thank you. I would like you to tell me the ones which are not possible.Thank you 1) I don't manage to get around to thanking you. Correctio: I can't get around to.. 2) She brought up three children by herself/on her own. She brought three ...
March 17, 2012

English
Writeacher, I really need you to check these sentences and tell me which are possible. Thank you. 1) I really hope we can start our students' email exchange next week. 2) Can you possibly write a short presentation of your school (age range of your students, list of core ...
March 17, 2012

English
Writeacher, I need you to check these things I need to include in an email. Thank you. 1) He has just received your principal's email and he is very pleased our schools will be working together on the accomplishments of various didactic (??) projects. I'm going to find...
March 17, 2012

English
I left out a sentence. He didn't let on the secret to anyone.
March 16, 2012

English
Writeacher, could you please check these examples? Thank you. 1) 'm glad you moved into a new house. I'm pleased you moved house. We were having dinner when the lights went off/out. We didn't 2) What kind of approach can a person have to work? He can work at a ...
March 16, 2012

English
I still have a few doubts, Writeacher. These are my last sentences. I really hope you can check them!! 1) I’ve just been on holiday to France with my family. (It means you have just come back?) I’ve just gone on holiday with my family. (I'm still there??) 2) My ...
March 15, 2012

English
I included the sentences I was most doubtful of. I hope you can clear my doubts. Thank you very much in advance. 1) My family and I have been on holiday in Greece. We stayed on a little island... There wasn't any wind. Unfortuanately I spent there only a week. 2) I have ...
March 15, 2012

English
Can you please check these sentences? I forgot to include them before. I really need to check them with you. 1) My family and I have been on holiday in (to?) Greece (he has come back from Greece). We stayed on (not in) Mikonos, a little island... 2) There wasn't (any ...
March 15, 2012

English
Could you please check these other sentences, please? Thank you. 1) I’ve just been on holiday with my family. I’ve just gone on holiday with my family. 2) My nephews did some pirates’ games. If you have just come back from your holiday: I was in Spain with my ...
March 15, 2012

English
I forgot to add the following data. Thank you very much. 1) You should make a short list of the job requirements before going for the interview. 2) There is nothing wrong with pulling out the paper with the company’s data on during the interview. 3) You should arrive to ...
March 15, 2012

English
Writeacher, I urgently need your help to check a few sentences on job. 1)When I go to the supermarket, first I get the trolley and then I go to the meat and fish section and finally to the check-out counter. I usually pay cash but sometimes by/with the credit card/I use the ...
March 15, 2012

English
I urgently need to check these sentences for the last time. Thank you. 1) The doctor prescribed a nasal spray to be used (is TO USE a mistake??) three times a day. Incorrect: The doctor prescribed me OR to me a nasal spray ... 2) Why don't you take SOME bicarb (or ...
March 15, 2012

English
I still have a few doubts. Can you please tell me if the sentences are all possible? Thank you 1) He cut his finger when he was slicing some bread. The surgeon gave him five stiches. The surgeon put five stiches in his finger. 2) The doctor put a cast on my ankle. The doctor ...
March 15, 2012

English
Thank you very much, Writeacher. Here are some more things I wanted to include. 1) Can you help me organize the introduction to the project? I will also include a group photo of the participating students as well as photos of our school. 2) Once the students know about our ...
March 15, 2012

English
Can you have a look at these sentences, please? 1. I’m emailing you the list of students, who are looking forward to starting the email partnership. As you can see, there are 25 pupils, coming from different classes and age groups. Do you think you can find other 4 pupils...
March 14, 2012

English
1) How can I shorten the word sixteen-year-old pupils? sixteen-year-olds? I need to include groups of students belonging to different classes. So I would like to identify them according to their age.
March 14, 2012

English
Could you please check these last two sentences, again? Thank you. 1) On one hand, I think it would be best to organize a student exchange program for next autumn and, on the other hand see the number of students who would be interested in spending an academic year at your ...
March 14, 2012

English
I left out the following sentences. Please, could you check them too? 1) My backpack is very heavy because inside (in it? are both possible) there are extra clothes, food, water (or food and water) for two days, a map, and a compass. 2) I'll take a big backpack with a tent...
March 14, 2012

English
Could you please check these sentences, please? Thank you. 1) The thieves stole a lot of things but they didn't damage the house. (turn this sentence into the passive/this is part of a test: A lot of things was/were stolen by the thieves but the house wasn't damaaged. ...
March 14, 2012

English
I left out these sentences. Thank you. 1) I hope the weather will be nice/good. I hope to have luck with the weather. If there is heavy rain, I'll have to wear walking boots. I also have a wind breaker in my rucksack in case it will rain. 2) All the boys and girls who will...
March 14, 2012

English
Imagine you are one of the competitors in the Ten Tors Challenge. Describe your clothes and the things you will take with you on the Challenge. (Can we use both the present continous and the future when described the clothes,: I will wear/ I will have to take ...) I gave two ...
March 14, 2012

English
I urgently need you to check this. Thank you, Writeacher. 1) Sorry for disturbing you again. Our secretary told me she hasn't received your headmaster's email, yet. 2) Can you please send it again to the following email address.....? We'll be organizing a link to ...
March 14, 2012

English
I still have a few sentences to check. Thank you very much, Writeacher. 1) During my last holiday I went to Switzerland. For my birthday my parents gave me cards for a horse jumping tournment in Zurich and I went to watch it. 2)We went to friends who have a house in Zurich and...
March 13, 2012

English
I urgently need you to help me check these sentences. Thank you, Writeacher 1) I'm sorry we havent' been in touch with each other for a long time. I've just been on holiday with my family. 2) I visited a medieval village and two islands on the Maggiore Lake. During...
March 13, 2012

English
Writeacher, can you suggest possible topics for email conversations among teenagers? 1) I will ask my students to introduce themselves, describe their daily routines, their hobbies and interests and the place where they live. They will do that with the help of our arts teacher...
March 13, 2012

English
I urgently need you to help me find the proper words. Thank you Writeacher 1) Thank you very much for sending me the list of your students. I was thinking of creating a link to our partnership ( I don't know how to express this) on my school webpage. 2) Five of your ...
March 13, 2012

English
Writeacher, here is my today's post. I varied my name from Henry to Matthew because there are too many Henry on Jiskha!!! In this way I can get to my post more easily. Imagine you have been on holiday with your family. Write an email to a friend telling him/her all your ...
March 13, 2012

Calculus-derivatives
Verify if these are correct answers. 1. The derivative of f(x)=e^2x -e^-2x is f'(x)=2e^2x - 2e^-2x? 2.A certain radioactive substance is decaying so that at time t, measured in years, the amount of the substance, in grams, given by the function f(x)=3e^-3t. What is the ...
March 6, 2012

Chemistry
So for #2 it should be 2Pb(NO3)2 → 2PbO2 + 4NO2 + O2 #4, maybe instead of SO3 on the products side, it should be SO4? So, 4NaCl + 2SO2 + 2H2O + O2 → 2Na2SO4 + 4HCl
February 20, 2012

Chemistry
So, they give me a word equation, where I am suppose to try and create a balanced equation for it. Ammonium phosphate and barium hydroxide react to form ammonium hydroxide and barium phosphate. 2(NH4)3PO4 + 3BaOH2 → 6NH4OH + Ba3(PO4)2 [I was thinking there should be ...
February 20, 2012

Chemistry
I need some help with some of these questions: The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name implies, it stinks! It is 58.77 percent carbon, 13.81 percent hydrogen, and 27.40 percent nitrogen. Its molecular weight is 102.2...
February 20, 2012

Chemistry
I need some help with some of these questions: The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name implies, it stinks! It is 58.77 percent carbon, 13.81 percent hydrogen, and 27.40 percent nitrogen. Its molecular weight is 102.2...
February 20, 2012

Calculus
How many tangents does the graph of f(x)=(x-1)^2(x-3)^2 have? I found out the derivative of f(x)=(x-1)^2(x-3)^2 f'(x)=4x^3 - 24x^2 + 44x -24 What do I do next?
February 18, 2012

algebra
Hi, Lucy, this is Matthew's mom, if you put the three corners together you would get 1/2 a circle or circumference. I hope this helps you.
February 14, 2012

Math
Mr. Clarkson and Mrs. Rose had an average of $180. After Mr. Clarkson spent $73 and Mrs. Rose received $38 from her father, Mr. Clarkson had 1/4 as much money as Mrs. Rose. How much money did each have at first?
February 14, 2012

Calculus
Could someone help me with this question. Determine what limit would be represented by the following graph. imgur dot com/bceWN I am not sure if it has open dot or closed but what would the equation be for open and closed dot?
February 12, 2012

Calculus
Is this the right explanation for this question 1. Examine the continuity of the function h(x)= -x, if x<0 0, if x=0 x, if x>0 Answer: Since h(x)= -x, if x<0 0, if x=0 x, if x>0 is h=|x|, we can conclude that the function is 1. continuous everywhere 2. ...
February 11, 2012

Calculus
I don't know what to write for question b and c. 1 a)Determine the values of x for which the function f(x) = 3/(√x^2+3x-4) is continuous. Values of x are -4 and 1. -------------------------------------- b) What does your answer in part a. represent? c) Why is it ...
February 11, 2012

Math/trig
Log radical b/ a^2 is equivalent to 1) 1/2 log b + 1/2 log a 2) l/2 log b- 2 log a 3) 2 log b - 1/2 log a 4) 1/2logb/2 log a
February 11, 2012

Calculus
Verify this question 1. Determine lim as x->3 (3x-8)/(4x-12), if it exists. (3(3)-8)/(4(3)-12) =1/0 Therefore it doesn't limit doesn't.
February 11, 2012

Calculus
Is there suppose to be calculations involved? :|
February 11, 2012

Calculus
What would be discontinous at x=? explain please
February 11, 2012

Calculus
Can someone help me with this question. With steps. Examine the continuity of the function h(x)= -x, if x<0 0, if x=0 x, if x>0
February 11, 2012

Math
Can You please explain the steps
February 10, 2012

Math
Determine the values of x for which the function f(x) = 3/(√x^2+3x-4) is continuous.
February 10, 2012

Precalculus
I got 4x^3+8x^2+5x+1/(x-3)
February 1, 2012

Precalculus
I keep getting wrong answer for this question. Write as a single logarithm log(x+1)+2log(2x+1)-log(x-3)
February 1, 2012

Precalculus
I keep getting wrong answer for this question. Write as a single logarithm log(x+1)+2log(2x+1)-log(x-3)
February 1, 2012

Precalculus
I keep getting wrong answer, its not the same as the book :3
February 1, 2012

Precalculus
Write as a single logarithm log(x+1)+2log(2x+1)-log(x-3)
February 1, 2012

Math
solve for x 2^x=0.125 5^2x=39 13^x=27
February 1, 2012

Math
THANK YOU I HAVE BEEN ON THIS FOR SO LONG
January 31, 2012

Precalculus
Evaluate log(base4)8 + log(base4)(1/8 log(base4)=(8x1/8) =1 I got 1 but the back of the book says 0...?
January 30, 2012

Physics
Your friend's car is parked on a cliff overlooking the ocean on an incline that makes an angle of 16.9° below the horizontal. The brakes fail, and the car rolls from rest down the incline for a distance of 36.3 m to the edge of the cliff, which is 61.1 m above the ...
January 28, 2012

English
Is Famine considered as Extra curricular activity?
January 23, 2012

English
I am doing my application form for a university, it asks for my job information Job Title: I work at Mcdonalds part-time and work in the kitchen, what will my job title be? Kitchen staff? :S
January 22, 2012

Math
Evan is painting a stool that has a cylindrical seat and four rectangular prism legs. The seat has a diameter of 8 inches and a height of 2 inches. Each leg is 2 inches by 2 inches by ten inches. How much area will Evan have to paint? Use three point one four for pi. Show your...
January 20, 2012

stats
The null hypothesis in this study where μ1 = tv news group, and μ2 = radio news group is
January 11, 2012

Math
Total number of scores is 45. Alex scored 9. What percent of the total number of points did Alex score?
December 30, 2011

Calculas
(Inventory Cost) A shopkeeper finds that the cost C of ordering and storing the latest laptop is C = 2 x + (300000 / x), where x is in the interval [1, 300]. The delivery of truck can bring at most 300 units per order. (a) Find the order size that will minimize the cost (b) ...
December 16, 2011

Caculas
(Airplane & Radar) An airplane is flying (horizontally) at the height of 6 km on a flight path that will take it directly over a radar tracking station (on ground). If the distance D between the plane and the radar is decreasing at a rate of 300 km/hr, find the speed of the ...
December 16, 2011

Biology
Using RNA a s a template for prot e in synthesis instead of t r ans l a t ing prot e ins directly from the DNA is advantageous for the cell because A) RNA is much more stable than DNA. B) RNA acts as an expendable copy of the genetic material, allowing the DNA to serve as a ...
December 11, 2011

Calculus
Find the area of the region bounded by y=x^4/3-4 , the x-axis,x=-1 , and x=1 .. Search tips:
December 8, 2011

MATH
can you help me with the table and graph for a direct and indirect equations? Y=x Y=x+5
December 8, 2011

science
like what?
December 7, 2011

science
are there any current or new treatments available for epilepsy?
December 7, 2011

science
What is epilepsey?
December 7, 2011

Physics
An electric motor rotating a workshop grind- ing wheel at a rate of 147 rev/min is switched off with a constant deceleration of 1.24 rad/s2. How long does it take for the grinding wheel to stop? Answer in units of s Through how many radians has the wheel turned during the ...
December 6, 2011

Chemistry
Calculate the heat (in kJ) required to transform 58.60 g of dinitrogen tetraoxide from a solid at a temperature of -9.3 °C to a gas at 47 °C. Report your answer to one decimal place. Data: Molar mass of dinitrogen tetraoxide, N2O4 = 92.011 g/mol Melting point = -9.3 &...
December 5, 2011

Chemistry
(a) Which of the ions K+ , Na+ , Be2+ will have the largest heat of hydration? Which the smallest? (b) Of the two compounds KNO3 and NaNO3 , which has the stronger intermolecular forces? (c) Of the two compounds PCl3 and Xe, which has the stronger intermolecular forces?
December 5, 2011

Statistics
its a worksheet where i have to do the hypothesis tests though.
December 3, 2011

Statistics
Hi. I need to complete hypothesis tests and i am unsure if i used the correct tests for each of the following: 1. Do people actually prefer Pepsi or Coke in a taste test? 2. Can people correctly identify Pepsi versus Coke? 3. Are people consistent with their prior preference? ...
December 3, 2011

trig
for what values of theta between 0 and 2 pi is the function of theta equal sine theta positive?
November 30, 2011

Superglue fuming--fingerprints
What is an amino acid? Why do they cause superglue to stick to my fingerprints on a cd when I place the cd in a plastic box covered with plastic wrap? I'm 9, so I really need just a simple answer. Thanks.
November 7, 2011

Chemistry
How many molecules (not moles) of NH3 are produced from 8.92×10−4 g of H2?
November 6, 2011

math
out of 150 students, 20% of them earned straight A's. how many students earned straight A's?
November 3, 2011

math
determine the value of N: N/20 * 100%=60%
November 1, 2011

Math
There are 80 students 35 of them are boys about what percent are boys
October 30, 2011

Math
Thanks
October 23, 2011

Math
Which of the following is NOT proportional? A)4/10 = 6/15 B) 2/1 = 30/15 C) 5/25 = 4/24 D) 63/90= 70/100
October 23, 2011

jlc
Three is the first number of pair and 8 is second if 50 is first number what is second number?
October 20, 2011

4th grade math
you simply have to write it out. So first one the expression would be 1285-622 because have to find the difference between the two numbers.
October 18, 2011

geometry
The way to work out this problem is that you do the lXhXw so width times the height times the length so 6 times 6 times 6= 216. 5th grader by the way.
October 18, 2011

7th grade subject
you simply must chose whether which one makes sense so I would go with5-3=2
October 18, 2011

Proof read please
You should divide the paragraphs so it will look a whole lot neater. Rather than that I think it's good.
October 15, 2011

English
take out ( ).
October 15, 2011

physics
suppose an experimental arrangement like the one in part 2 has mass m1= 0.200kg at the 0.100m mark and a mass m2=0.100 kg at 0.750m mark. Can the system be put in equilibrium by a 0.050kg mass? if it can not be done state where it would be placed. If it cannot be done, state ...
October 13, 2011

Chemistry
Thank you so much for the help on my other question!!! An alloy (solution of metals) is 80% by volume iron. The rest is aluminum. Aluminum has a density of 2.70 g/cm³, and iron's is 7.87 g/cm³. A block of alloy measures 2.0 ft. wide and 3.0 ft. long. If the block...
October 8, 2011

Chemistry
An aqueous solution of copper (I) chloride is 15.7% by mass copper (I) chloride. Copper (I) is 35.8% by mass chlorine. If the solution has a density of 1.045 g/cm³, how many gallons of solution contain 2.3 kg of copper?
October 8, 2011

College Math
I am really struggling with this Fibonacci number problem. If the greates common factor of "m" and "n" is "r", then the greatest common factor of Fm and Fn is Fr. Show that this is true for m=6 and n=9. I am so confused
October 2, 2011

math
there are two planes. they both leave the airport at 1pm. one plane travels north at 150mph and the other plane travels west at 200mph. how many miles will they be apart at 3pm?
September 28, 2011

Algebra
19[7+w+(-2)]
September 26, 2011

Algebra
How far in miles is a line of 1,000,000 pennies. Please show chart with 5 instances. Define a variable and write an algebraic expression.
September 11, 2011

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