# Posts by franz

Total # Posts: 26

maths
Suppose that the demand function for a good is qD(p) = 8000/((p^2) + 1) where q is the quantity and p is the price in dollars. If the price is decreased from 9 to 8.5, what is the approximate increase in the quantity sold?

math
If a lab technician has a salary of 22000 her first year and is due to get a 500 raise each year, then what will her salary be in her seventh year? What is the total salary for 7 years of work for the lab technician?

Math
You are making kits with 25 cubic inches of candle wax along with a mold. You have a square base, and you want to make a pyramid candle. The height of the pyramid should be 2 inches shorter than the edge of the base. Given this, what should be the dimensions of the mold? ...

math
For every 3 classes in the intermediate grades, there are 5 teachers. How many teachers are there for 15 classes.

physics
A soccer ball is kicked at an angle of 30° to the horizontal with an initial velocity of 16 m/s. How far does the soccer ball go? A. 3.8 m B. 6.6 m C. 13.3 m D. 22.6 m i used the formula vf^2-(visin theta)^2 / 2g for this and solved it for 3.3m but none of the answers are...

Social Studies
you could just read the wikipedia article on chernobyl or watch a video on it and then answer the questions

reference frames
thank you!

reference frames
Car A is heading north with a velocity of 14 m/s. Car B is traveling south with a velocity of 19 m/s. What is the relative motion between the two cars? A. 5 m/s B. 14 m/s C. 19 m/s D. 33 m/s would this be A, since 19-14 = 5?

science Help
yes

Science
Can you please check if my part on science is grammatically correct? Thank you very much, Writeacher. 1) In 1951 an American woman descended from African slaves freed named Henrietta Lacks, was admitted to Johns Hopkins Hospital in Baltimore. 2) In those years, scientists had ...

Art
Thank you very much, Writeacher. 1) Can you help me find online exercises on sentence connectors (expressing addition, contrast, etc). I need my students to practise how to write a cohesive paragraph (including an introduction and a conclusion). By the way, I need to find a ...

Art
Here is the second part of the summary. Thank you, Writeacher. 1) Huxley describes a utopian society determined by a scientific caste system in which human beings are born artificially on an “assembly line” divided into different categories which determine their ...

Art
I need to prepare a short dissertation on the dystopian novel and the theme of totalitarianism or subordination (the parody of Stalin, Hitler, Winston Smith and Winston Churchill). Here is a short summary of Huxley’s novel “Brave New World”. Could you please ...

Art
Can you also help me find online material on how to write a "tale"? I should also refer to Poe's tales and its main features. Can you think of another important American writer of tales? Thank you very much, Writeacher!!

Art
I left out the following sentences. Thank you, Writeacher. 1) The poet sees his dying friend as if he were (was??) drawning in the deadly gas. 2) The memory of his dying friend returns in the poet's dreams (nigtmares is possible?).The poem is addressed to all those who ...

Art
I urgently need you, Writeacher, to check these sentences. Thank you very much in advance. 1)He uses a particular salt, adds it to other components and brings it to the boil. Once the boiling (better ebullution??) has subsided (ceased?), he drinks the potion. First, he suffers...

Art
Writeacher, I urgently need you to help me find material (for intermediate English learners) on the following themes: 1)The theme of doping in cyclism. 2)The Jazz Age 3) Allen, co-founder of the Brain Science Institute

Art
I left out the following sentences.I really hope you can cehck them. Thank you very much, Writeacher. 1) On the second day we spent time in the city centre shopping for souvenirsfor our relatives. 2) The price for our hotel accommodation amounted to 300 Euro per night (or for ...

Art
I left out the following sentence. Thank you, Writeacher. 1) They spend eight times as much money as on music. They spend eight times more money than on music. It was the first

Art
Could you please revise the following sentences? Thank you. Shall I consider both sentences as correct? 1) I was having dinner / I had been having dinner when the telephone rang. 2)He told me he had lost his car keys and that he wanted me to go and pick him up (it "to go&...

Health
I chose 5 points as you suggested to me. Thank you very much, Writeacher. 1) The difference about advertising today is that….. 2) Children cannot oppose their appearance in ads. Children want to buy everything they see (not all they see?) on TV or listened to on the radio...

Art
I left out the following sentences.Thank you very much. 1) As a matter of fact, they don’t just sell products, they sell lifestyles. They show the lives of famous people without even showing the brand they are trying to sell. 2) When the first ads came to the TV screens (...

Art
Could you please check these sentences, too? Thank you. 1) Unlike in the past, now people enjoy watching ads. Their objective is to show people how to defend.. They aim to show people how to defend.... (are they both possible?) 2) The use of children in ads is an exploitation ...

chemistry
At a certain temperature, 4.0 mol NH3 is introduced into a 2.0 L container, and the NH3 partially dissociates by the reaction. 2 NH3(g) N2(g) + 3 H2(g) At equilibrium, 2.0 mol NH3 remains. What is the value of K for this reaction?

Chemistry
It takes 208.4 kJ of energy to remove 1 mole of electrons from 1 mole of atoms on the surface of rubidium metal. How much energy does it take to remove a single electron from an atom on the surface of solid rubidium in Joules? What is the maximum wavelength of light capable of...

Honors Pre-Calculus
Here's another way of thinking about it. You know the Radius, 3963 so you can now find the circumference with the formula C=2piR. Do the math, C=24900. Durham is at 36 degrees which means Durham to the north pole is 54 degrees. Draw a little picture. The ratio of 54/360 ...

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