# Posts by matt

Total # Posts: 2,383

Social studies
how does geography affect the development of a civilization?

Math
the end point of a line segment is (-3,7) and the midpoint is (1-1) find the other endpoint

Let W1 represent the work required to accelerate an object on a frictionless horizontal surface from rest to a speed of v. if W2 represents the work required to accelerate the same object on the same surface from a speed of v to 2v, then which one of the following is the ...

chemistry
calculate the relativistic mass of 1.81x10^24 photons (3.00 mol) with wavelength of 450 nm.

Chemistry
I know, I don't understand. I don't know violet light or red light either, we haven't learned mass of those.

math
y=(w-5)270 for w

physics
A 5.20 package slides 1.57 down a long ramp that is inclined at 13.0 below the horizontal. The coefficient of kinetic friction between the package and the ramp is = 0.305 Calculate the work done on the package by friction. Calculate the work done on the package by gravity. ...

physics
A 5.20 package slides 1.57 down a long ramp that is inclined at 13.0 below the horizontal. The coefficient of kinetic friction between the package and the ramp is = 0.305 Calculate the work done on the package by friction. Calculate the work done on the package by gravity. ...

Precalc
how do I graph this function? x^2-xy+2x-1=0

science
On Earth, the ratio of the force (newtons) to the mass (kilograms) of an object is always the same

definition
CORRECT!!!! Somehow... i never thought of that word!!! thank u!

definition
what is a word that you don't choose when making a choice?

Earth Science
Does energy flows through the Earth's system by heat?

Earth Science
Can someone five me an example of how carbon cycles through the Earth's system?

Math - LCD
What is the LCD for x^2,x, and x?

math
is it true that you only have to check your solution in a rational equation if the solution is 0?

Algebra
All i know is the answer is 122.2%, i don't know what kind of problem this is or how to solve it haha

AP Chemistry
For the reaction ? Al + ? CuSO4 ↽⇀? Al2(SO4)3+? Cu a maximum of how many moles of Al2(SO4)3 could be formed from 5.95 mol of Al and 1.31 mol of CuSO4? Answer in units of mol.

AP Chemistry
For the reaction ? C6H6 + ? O2 ↽⇀? CO2 + ? H2O a maximum of ? moles of CO2 could be formed from 9 mol of C6H6 and 2.81 mol of O2. Answer in units of mol

AP Chemistry
So is it 1655.84?

AP Chemistry
What volume of 3.16 M HNO3 is required to prepare 524 mL of a 0.2 M HNO3 solution? Answer in units of mL.

AP Chemistry
How many grams of sucrose (C12H22O11) must be dissolved in 60 g water to make a solution in which the mole fraction of sucrose is 0.4? Answer in units of g.

Science
Which of the following is an organic molecule? A. Oxygen gas B. Sucrose C. Iron oxide D. Water

physics
A ping pong ball is rolling across a table top at 22 m/s. If it is 71 m away from the edge, how much acceleration does a person blowing on it need to apply to stop it from falling if they blow for 8.7 seconds?

physics
A ping pong ball is rolling across a table top at 22 m/s. If it is 71 m away from the edge, how much acceleration does a person blowing on it need to apply to stop it from falling if they blow for 8.7 seconds?

physics
202.8

Math
What is the smallest number with digits to the thousandths place that will round to 34.6?

Stats
Suppose X & Y are two independent stocks' returns with: E(X) = E(Y) =15% and V(X) = 144, V(Y) = 256 Problem 1. Buy half X and half Y, so w1 = w2 = 0.5 and Z = (X+Y)/2 Note: The answer says that the variance is 100 but I thought it would be 200. Since I would be adding half...

science
what is the density of liquid in a baloon that weighs 20N on a spring scale if the baloon has a volume of 0.75L what is the liquid density g/ml

Physics
Two 125 N forces pull on a 50 kg mass. One of the forces pulls to the right and the other pulls 90 degrees from the first force. What is the net acceleration of the mass?

Chemistry
oh I'm sorry it's a typo The question is this: Calculate the molality of a 0.410 molar aqueous glucose solution whose density is 1.15 g/mol

Chemistry
Calculate the molality of of a sol'n whose density is 1.15 g/ml

Algebra
48m^6

science
bromine and mercury are the only 2 liquids on the periodic table, could you predict this? why or why not?

econ
Suppose there are 1000 identical firms producing diamonds. Diamond miners receive the wage rate w. Assume that the short-run cost function for each diamond-producing firm is C(q) = wq + q2. a. If w = 10, what is the supply curve of an individual firm? What is the market supply...

Math
I am stuck with this logic problem: Logic – Jack of All Trades Trudy loves learning new things and is always taking some course or other forum the local college’s adult education program. She’s signed up for four upcoming classes – calligraphy, picture ...

Math
I am stuck with this logic problem: Logic – Jack of All Trades Trudy loves learning new things and is always taking some course or other forum the local college’s adult education program. She’s signed up for four upcoming classes – calligraphy, picture ...

Why?

Should only those who are trained lawyers allowed to be arbitrators for labor disputes?

math
339.97 x 48= 16318.56 16318.56+ 3260= 19578.56

Computer
How can I find information to develop an Excel spreadsheet using conclusions from my research about mulimedia tools that aid classroom instruction?

physics
Two identical diverging lenses are separated by 15 cm. The focal length of each lens is -8.0 cm. An object is located 4.0 cm to the left of the lens that is on the left. Determine the final image distance relative to the lens on the right.

geometry
determine the values of x and y for which ABCD is a parallelogram. AB = 3x + 7, BC = y +8, CD = 5x + 1, DA = 2y - 3

geometry
classify a triangle with side lengths 5, 9 and 12 as acute, right, or obtuse

geometry
ABCD is a trapezoid with median EF and bases AB and CD. AB = 18, EF = 28. Find CD

math
what is the inverse of: f(x) = 2(x – 4)^2 + 5

Math
This is how the question looks on the sheet?

Math
A rabbit population satisfies the logistic equation dy dt = 2x10^-7y(10^6- y); where t is the time measured in months. The population is suddenly reduced to 40% of its steady state size by myxamatosis. If the myxamatosis then has no further effeect, how large is the population...

Problem Solving
A 4oz jar of spice costs 92 cents. What is the unit cost per ounce.

writting out clock time
How do I write 1 minute 45.9 seconds? Is it 1:45.9 or is that one hour 45.9 seconds?

math
Records from buzz's sawmill show that workers have a 0.02 probability of losing an arm and a 0.03 probability of losing a leg in a year. What is the probability that a worker does not lose an arm? What is the probability that worker does not lose and arm or leg?

math
What is the number of ways 9 people from a group of 13 could be arranged in a line.

MATH
The probability that a voting-age adult in 2004 voted in the presidential election was 0.57. Five voting-age adults in 2004 were randomly selected. Find the probability that exactly 2 or the 5 adults voted in the presidential election.

statistics
11 are from Atlantis and 5 are from Zedonia

statistics
A group meeting is attended by 16 delegates. (a)If a 6-person negotiation panel is selected at random from the 16 delegates, what is the probability the negotiation panel consists of 3 delegates from Atlantis and 3 delegates from Zedonia?

physics
i am also stumped on this question The bounce periods y are measured for a set of masses x hung from a spring. Assuming the exponential form y = bx m, (log y) vs. (log x) is plotted, yielding a linear trendline equation of (log y) = 0.4796 (log x) + 0.1029, with R2 = 0.9991. ...

physics
A 2630-kg car drives up a hill 769 meters high in 41.0 seconds. Calculate the power exerted

bio
what do macrophages have to do with coplement proteins

english

english
(forth) is italicized

english
thank you and i have something different now: What part of speech is the italicized word in the sentence below? Four score and seven years ago, our forefathers brought forth upon this continent a new nation conceived in liberty and dedicated to the proposition that all men are...

english
so its complex??

english
is this a compound or complex sentence: They were lovely people, the kind you might meet anywhere.

Statistics
A large furniture store has begun a new ad campaign on local television. Before the campaign, the long term average daily sales were \$24,819. A random sample of 40 days during the new ad campaign gave a sample mean daily sale of x(bar)=\$25,910 with sample standard deviation s...

english

english
i have one more :The hero falls in love with a countess (who is very beautiful).

english
its past participial phrase

english
i think it could be: Headed by a senior,

english
so it would be nominative absolute??

english
senior

english
or prepositional phrase with a gerund

english
thank you and what about this one:Headed by a senior, the group drew up rules for School Spirit Week. i think its nominative absolute??

english
please help me!!!! Put the sizes on the uniforms while sorting them out. and the italicized is sorting them out,can only be: adverb clause infinitive phrase past participial phrase elliptical clause adjective clause

english

chemistry
The half life of phosphorus -32 is 14.3 days. What percentage of an original samples radioactivity remains after 57.2 days?

biology
What reactions go on in your brain when you fall asleep? If you could give me a website that goes INDEPTH as to what happens in the brain when you fall asleep that would be great!

statistics
The international olympic committe states that the female participation in the 2004 summer olympic games was 42%, even with new sports such as weight lifting, hammer throw, and modern pentathalon being added to the games. Broadcasting and clothing companies want to change ...

math
For the geometric series 50+48+... a. 867.373 is the approximate value of a partial sum of the series. How many terms were added to get this number? b. To what number does the serveries converge?

APUSH PLZ HELP!
In 1850 the South was in good political shape. Each of the following descriptions explains why that was true except? A. Zachary Taylor, the president, was a southern slave-owner B. The majority of the presidential cabinet were southerners C. Most of the justices on the US ...

APUSH
In 1850 the South was in good political shape. Each of the following descriptions explains why that was true except? A. Zachary Taylor, the president, was a southern slave-owner B. The majority of the presidential cabinet were southerners C. Most of the justices on the US ...

science
How do you think objects will fall when there is no air

A 4oz jar of spice costs 92 cents. What is the unit cost per ounce?

bio
how is the thalamus the sensor regulator for the brain (what are the steps that happen when it receives a stimuli?

biology
how does the REM help create a sleep signal sent from the pons in the brain that helps to stop motor neurons in the spine when a person sleeps. Please help me! I am looking for detailed information right down to the certain proteins and such! I have searched everywhere and ...

Music
I need to make an instrument for my music class. does anyone have any good ideas? we will have a week to make it. It cant be something that involves using power tools. Any ideas? and if so do you have a website on how to make it? I wanted to try to make an accordian like out ...

math
using three dimensional objects. trace one face of a cone. trace one face of a pyramid.

San
b

algebra
Mr.dorkus lost five test papers.he found a summary of the missing scores which said that the mode of the scores was 90 the meadian was 85 and the mean was 83.The grades were whole numbers bettween 0 and 100. what is the lowest possible score of the missing test

algebra
the student store sells schools supplies,hats,and t-shirts with NAMS printed on them.The person who counted the hats and t-shirts can't remember exactly how many of each there were but he does remeber these 2 facts: -there were four times as many t-shirts as hats -there ...

Physics
A particle has a de Broglie wavelength of 3.30 x 10^-10 m. Then its kinetic energy quadruples. What is the particle's new de Broglie wavelength, assuming that relativistic effects can be ignored?

Physics
The interatomic spacing in a crystal of table salt is 0.281 nm. This crystal is being studied in a neutron diffraction experiment, similar to the one that produced the photograph in the figure. How fast must a neutron (mass = 1.67 x 10^-27 kg) be moving to have a de Broglie ...

math
If the volume of a cylindrical block is equal to 800cm^3 prove that the total surface area is equal to 2(pi)x^2 + (1600)/x, where x cm is the radius of the base. hence obtain the value x which makes the surface area a minimum.

geometry
The area of a regular decagon is 50cm2. What is the area of a regular decagon with sides four times the sides of the smaller decagon?

circular motion
6134

math
2 men ran 36 parts. X ran 5 times as many as Y. how many parts did Y run?

History
Create a Metaphor and simile about the panama canal, the perspective of the untied states from panama canal, and from the perspective of panama canal from the untied states. and give three reason for each.

Math
find the equation of a line that passes through (5,2) and (2, -2)?