Saturday
December 20, 2014

Posts by ANON


Total # Posts: 1,482

Quantum physics
ANS TO 3 IS c WATS Q10?
September 8, 2013

Quantum physics
7)A) I,H 7)B) X,H
September 8, 2013

Quantum physics
Someone give me Q3 and I give him/her all the others questions!
September 8, 2013

Quantum physics
any1 got the ans to q 10?
September 8, 2013

Quantum physics
Hey can any1 help me with question 10, on my last try, i cant seem to figure it out
September 7, 2013

Quantum physics
Ans to q2 above, i can help with the other 2q's
September 7, 2013

Math
Find the derivative of y=sin(x)*(sinx+cosx)
September 4, 2013

AP Calc
How do you find the derivative of y=sin(x)*(sinx+cosx)
September 4, 2013

AP Calc
Find the equation of the tangent line at the indicated point. y=5th root of (3x^3+4x) at (2,2)
September 4, 2013

Biology
You are testing a hypothesis that population density of a particular plant species influences the rate at which a pathogenic fungus infects the plant. Because the fungus causes visible scars on the leaves, you can easily determine whether a plant is infected. Design an ...
August 26, 2013

8th Grade Math
cancel out the denominator by multiplying by greatest common factor so 2. 2(5/2t-t)=2(3+3/2t) so now equation is 5t-2t=6+3t then solve. 3t=6+3t you should get no solution
August 26, 2013

thermodynamics
Use the Gibbs Free Energy Equation: ^G=^H-T^S ;where ^ represents Delta. Plug in the values and you are done! Remember to convert 25C to Kelvin.
August 25, 2013

physics
Use Couloumb's law: F=q1q2/d^2 We get force is inversely proportional to the square of the distance. Solve the rest yourself.
August 24, 2013

math
Which situation can be modeled by tossing a coin three times? a. choosing which one of sixteen teams will win a tournament c. selecting a desk from thirty-six in a classroom b. deciding which English teacher of eight will win a trip to London d. picking one of six math teachers
August 17, 2013

Math
so b?
August 17, 2013

Math
cause i dont understand what you saying
August 17, 2013

Math
Just tell the answer
August 17, 2013

Lab math
You are doing a red blood count with a standard dilution of 1/200. The area counted is 10 red squares in a Neubauer chamber. Under these conditions, what is the factor that would be used to determine the number of cells in the undiluted blood?
August 7, 2013

Chemistry/lab math
Thank you very much for this further clarification; I understand what it is asking now.
August 7, 2013

Chemistry/lab math
Okay when you set up the equation likewise for potassium and solve it the same way is the answer supposed to be the same? I'm just confused as to whether the question is asking if each should be prepared differently or it's just one solution you're working with.
August 7, 2013

Statistics
Some answers are wrong.
August 4, 2013

English
What are the stories that go with each of the tools that Sanders discusses in his essay "Inheritance of Tools?" I don't really understand what the question wants, so I started by saying the history of the hammer. What can I write about the other tools?!
July 29, 2013

Math
if x and y are two different integers in S, which of the following must be the square of an integer I. (x-1)(y-1) II. 4(x-1) III. x^2+y^2 a. none b. I only c. II only d. III only e. I and II
July 25, 2013

Math
each "word" in a special code is a three digit number. if no word in the code can begin with a 1 or 0, what is the greatest number of different words the code can contain? 28 512 800 900 1000
July 25, 2013

Math
if an integer is added to its square, the units' digit of this sum could be....? 1 2 3 4 5
July 25, 2013

Math
a drugstore had a promotion in which $0.50 was refunded to customers for each $10.00 spent on merchandise. if a customer spent $20.00 on merchandise during this promotion, the refund was equal to what % of the amount spent? 1 1/4% 2 1/2% 5% 25% 50%
July 25, 2013

Math
if x is r percent of y and if k is s percent y, then x is what percent of k? 100(r+s)% 100/rs% 100r/s% 100s/r% rs/100%
July 22, 2013

Math
in a league with 6 teams each team is scheduled to play each other team exactly twice. what is the total number of games that are scheduled in the league?
July 22, 2013

math
if x,y, and z are different integers and x+y+z=3, what is the least possible value of z? -3 1 2 3 cannot be determined from information given
July 21, 2013

math
if c+4=2a+7b, what is the value of c+6 in terms of a and b? 4a+7b 2a+7b-2 2a+5b+2 2a+9b 2a+7b+2
July 21, 2013

math
thank you
July 21, 2013

math
when a large cake is cut into pieces that each weigh 3 ounces, it yields 110 pieces. how many pieces would the cake yield if it were cut into 2 ounce piece instead?
July 21, 2013

math
a total of $24.00 is to be divided among three children in amounts proportional to their ages. if the children's age are 9, 12, and 15 years, how much money will the YOUNGEST recieve? 2 3 4 5 6
July 21, 2013

Math
Jason has to sell a box of candy bars for a fundraiser. Yesterday he sold 1/3 of the total number of candy bars that came in the box, and today he sold 3 candy bars. If his sales for these two days was 11/30 of the total number of candy bars that came in the box, how many ...
July 21, 2013

Stats
A pizza parlor has 13 different toppings available for its pizzas, and 2 of these toppings are pepperoni and anchovies. If a customer picks 2 toppings at random, find the probability that pepperoni is one of the toppings. Round to four decimal places.
July 17, 2013

AP Calc
Solve the following absolute value inequalities: |x+1|<=|x-3| I promise I'm not posting my whole homework assignment. These are questions that I skipped and have no clue how to do out of a huge packet.
July 12, 2013

AP Calc.
ohmygosh.. i'm an idiot.. thank you! you're the bestt!(:
July 12, 2013

AP Calc.
How did you go from the original question to the 1st step?
July 12, 2013

AP Calc.
but don't you have to get rid of the negative exponents somehow..?
July 12, 2013

AP Calc.
I don't get it...
July 12, 2013

AP Calc.
Simplify: [(x^-3)-x]/[(x^-2)-1]
July 12, 2013

AP Calculus
Got it. Thanks lol
July 12, 2013

AP Calculus
Wait.. does it matter if it's f(x) or f(y)?
July 12, 2013

AP Calculus
okay thank youu so much. This is a summer review packet before calculus and I don't remember how to do any of this!
July 12, 2013

AP Calculus
If f(-x) = f(x), the function is even. If f(-x) = -f(x), the function is odd. If neither is true, the answer is neither.
July 12, 2013

AP Calculus
Show work to determine if the relation is even, odd, or neither. 1. 3x=|y| (|y|=abs. value of y) Simplify the following complex fractions. 2. [(3/x)-(4/y)]/[(4/x)-(3/y)] PLEASE HELP!
July 12, 2013

AP Calculus
Oops.. thankyou haha
July 12, 2013

AP Calculus
I'm suppose to simplify it, but I keep getting 3y-4x/4y-3x. Can you please show me how to do it?!
July 12, 2013

AP Calculus
[(3/x)-(4/y)]/[(4/x)-(3/y)]
July 12, 2013

Science
Female silkworm moths (Bombyx mori) attract males by emitting chemical signals that spread through the air. A male hundreds of meters away can detect these molecules and fly toward their source. The sensory organs responsible for this behavior are the comblike antennae visible...
July 3, 2013

Science
If you were a pharmaceutical researcher, why would you want to learn the three dimensional shapes of naturally occurring signaling molecules?
July 3, 2013

math
If you are trying to find the area of the triangle you could use trig to find the height of the triangle and then use the formula 1/2 base x height. So draw the Isoceles triangle with each leg 3cm and the base 4cm Draw a centre line forming two right angled triangles find the ...
June 26, 2013

Science
x-t graph is a displacement vs time graph..right? so you would have a vertical axis as you displacement (distance) and a horizontal axis as the time (in seconds). uniform acceleration means an object moves with a change in velocity that is equal in amount. velocity is a change...
June 17, 2013

Change of subject formular
in y = x-8, the subject is y. to change that is to make x the subject i.e. the equation must become x = .... here are the few rules to consider; 1. change the sign of the variable when you move it to the other side of the equation. 2. the subject must always be isolated on the...
June 17, 2013

Chemistry
that strange!! the amount of heat evolved for a particular substance is Q = mc?T where m is the mass of that substance c is the specific heat capacity and ?T is the change in temperature during transition change or reaction. So as the mass increased so the Q as well.
June 17, 2013

Physics
I think its possible. How can the toy cars are controlled with a controller? isn't that an example of electricity been carried through air? If not then am wrong.
June 17, 2013

Grammar
I'm sending an email to my teacher. and I wanna know how to send it like the correct way. Hi Miss rodriguez I wanted to know what's my score for reading they still haven't posted it on the portal
June 11, 2013

Physics
The velocity of a vehicle is uniformly reduced from 72km/h to 24km/ over a distance of 250m down a decline of 1:25 the mass of the vehicle is 1.5Mg and its tractive resistance is 400N. The retardation is uniform. Calculate the total constant braking force required so I found ...
June 3, 2013

geometery
one could say 8/3 = 12/height h(8/3) = 12 h = (12x3)/8 h = 4.5 or use trigonometry and say sinX= 3/8 X = (1/sin)3/8 X = 22.02 which is the angle of the incline so sin(22.02) = h/12 12sin(22.02) = 4.5
June 3, 2013

Chemistry
a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 in the polymer at...
June 2, 2013

Chemistry
For each pair of structures shown below, indicate whether the two species are identical molecules, enantiomers, or isomers of some other sort.
June 2, 2013

Chemistry
a) A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 in the polymer at...
June 2, 2013

Chemistry
At very low temperatures the carrier concentration in one of these materials appears to diminish very rapidly. Why is this? Please choose the option that BEST describes this phenomenon.
June 1, 2013

Maths
Hi I think this is how it should be done, not completely sure please check other scources as well For this question to be answered at least a basic shape is required, is it a rectangle, is it a circle. The optimisation of the perimeter of a rectangle or square could be found ...
June 1, 2013

math
the rule of fractions is when you add or subtract you need to make the denominators the same 2/3 +3/5 becomes (2x5)/(3x5)+ (3x3)/(5x3) =10/15+9/15 now add the numerators 19/15 5/6 - 3/4 =10/12-9/12 =1/12 with multiplication just multiply both top and bottom 3/5 x 2/5 = 6/25 ...
June 1, 2013

chemistry
Scratch what i just said out. also, out of the choices provided, which one is closest to 'trigonal pyramidal', because it definitely isn't trigonal planar.
June 1, 2013

chemistry
It's Tetrahedral, the others i don't know.
June 1, 2013

Chemistry
Nope. just checked. though there might be a third correct answer...
May 31, 2013

chemistry
it's wrong. why is it wrong?
May 31, 2013

chemistry
THEN HOW DO YOU DO A)?
May 31, 2013

Math
Create a 3rd degree polynomial with real coefficients that has roots -1 and 4i. Write your answer in form ax^3 + bx^2 + cx+ d .
May 24, 2013

Math
Create a 3rd degree polynomial with real coefficients that has roots -1 and 4i. Write your answer in form ax^3 + bx^2 + cx+ .
May 24, 2013

Science
Explain if quadruplets-four babies born at one birth are always identical or always fraternal, or if they can be either.
May 23, 2013

Engineering
Please post the answers for 1_4 and 1_5
May 23, 2013

Civil War
What book caused many people in the north to look at slavery as a moral issue?
May 21, 2013

Civil War
The Fugitive Slave Law was criticized because it
May 21, 2013

algebra
1) how many billions of years will it take 1000 grams of uranium-238 to decay to just 125 grams? 2) a researcher had 37.5 g left from a 600 g sample of sulfer-35. how many half-lives passed during that time? 3) look at problem 2. how many days passed during that time?
May 9, 2013

algebra
a number cube is rolled 2 times in a row. what is the probability of rolling a number greater than 2 both times?
May 7, 2013

Pre calc
Projectiles are always parabolas
May 6, 2013

physics
A meter stick is suspended vertically at a pivot point 27 cm from the top end. It is rotated on the pivot until it is horizontal and then released from rest. What will be its maximum angular velocity (in radians/second)?
May 6, 2013

physics
While waiting to board a helicopter, you notice that the rotor's motion changed from 340 rev/min to 265 rev/min in one minute. Assuming that this acceleration remains constant, calculate how much longer (in seconds) it will take for the rotor to stop.
May 6, 2013

Algebra 1
(-2+x) (1+2x)
May 6, 2013

Function
Write a function rule for the area of a parallelogram whose base is 4 inches more than its height. What is the area of the parallelogram when its height is 8 inches?
May 6, 2013

Function
Fahrenheit and Celsius are two measures of temperature. The temperature in degrees Celsius is equal to five ninths of 32 less than the temperature in degrees Fahrenheit. What is a function rule that represents this situation?
May 6, 2013

Functions?
find the range of f(x) = -2x+6 for the domain {-1,3,7,9}
May 6, 2013

Chemistry
n is the moles of No
May 6, 2013

Chemistry
use your ideal gas formula, but first find the limiting reagent to find the moles of NO. Then to find volume V=(nRT)/P assume pressure to be one and temperature to be 273K R is the constant .08206. Hoped it helped. The total volume is 12.50+20 (this is true because of the law ...
May 6, 2013

Physics Plz help me
5.98x10^6
May 6, 2013

Math
Larry is 74 inches tall and his shadow is 70 inches long. At what degree is the elevation is the sun?
May 4, 2013

algebra
Beginning with cars made in 1981, all vehicles must contain a 17-digit Vehicle Identification Number (VIN). The first 3 positions must be letters or numbers, position 4 and 5 must be letters, positions 6 and 7 must be numbers, position 8 can be a letter or a number, position 9...
May 2, 2013

social studies
again with the articles haha "An article on Abraham Lincoln's rise to the presidency (this should NOT be about his presidency but what he had to do to become president and his struggles to become one)"
April 29, 2013

social studies
I'm doing a project and I need a atricle on John Brown. (Like Who was he? What did he do? What happened to him? Do I agree? and why? but I'm looking for a article and don't find one
April 29, 2013

Algebra
Find an equation for the line with y-intercept 3 that is perpendicular to the line 3y=2x-4. A. 2y=6-3x B. 2y=3x+6 C. 3y=9-2x D. 3y=2x+9
April 29, 2013

Algebra
(4x^2-2x+8) - (x^2+3x-2)=
April 29, 2013

Chemistry
Thanks.
April 27, 2013

Chemistry
Which of the following will increase the strength of a sample of 90% SiO2 - 10% MgO Quench the entire sample in water Quench half of the sample in water Cool the entire sample with air jets Cool half the sample with air Submerge the sample in a salt bath of Na2O Submerge the ...
April 27, 2013

chemistry
Correction, it's right. WHY it is right though, that is the question. After all, who would want to know how to do a similar question where internet access is disallowed? Anyone who hasn't just stumbled onto the question, or already knows how, that's who.
April 26, 2013

chemistry
it's wrong....
April 26, 2013

Physics
X10 are done now
April 26, 2013

Physics
you need to make sure you use the right value for I
April 26, 2013

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