Tuesday
September 30, 2014

Posts by alex


Total # Posts: 2,608

Math, Please help :/
Hmm that sounds right , But mr fuchs said that the equation was y=30 * 2.25x , So i dont know , This is confusin :/
September 30, 2010

Math, Please help :/
What are your formulas?
September 30, 2010

Math, Please help :/
I dont understand your answer, please explain more.
September 30, 2010

Math, Please help :/
At Mr.Vid's Video Rentals you can join his VId Club for a monthly membership fee pf $30. Club members pay only $.85 to rent each movie. If you are not a member of the VID club, the movies rent for $2.25 each.How many videos would you have to rent each month to make a ...
September 30, 2010

Math
At Mr.Vid's Rentals you can join his VID Club for a monthly membership fee of $30.Club members pay only $.85 to rent each movie. If you are not a member of the VID Club, the movies rent for $2.25 each.How many videos would you have to rent each month to make a membership ...
September 29, 2010

Algebra
Express the following in simplest radical form. All variables represent positive real numbers. square root of 80a^2b divided by the square root of7a^3b^7 I got an answer of 4 square root of 5 divided by b^3 square root of 7a
September 29, 2010

us history
i agree
September 29, 2010

Chemistry (again)
What mass of NaOH is required to precipitate all the Fe2+ ions from 52.0 mL of 0.200 M Fe(NO3)2 solution?
September 28, 2010

Chemistry
Calculate the molarity of a solution made by dissolving 0.0715 mol Na2SO4 in enough water to form 550 mL of solution. While we're at it... How many milliliters of 10.6 M HCl solution are needed to obtain 0.205 mol of HCl? Also... How many grams of solute are present in 50....
September 28, 2010

math
It isn't, LOL.
September 28, 2010

math
E = Elm, M = Maple, O = Oak M = 2E O = 5E O + M + E = 32 Now you just guess & check. Try using the number 8 somewhere; I'm not going to do ALL of it.
September 28, 2010

9th grade MATH
14 + 2y = 78 78 - 14 = 64 2y = 64 64 / 2 = 32 y = 32
September 28, 2010

8th grade
the study of the physical and natural world and phenomena, especially by using systematic observation and experiment
September 28, 2010

GEOMETRY
Not enough info. Sorry.
September 28, 2010

College Physics
i got 4.11 and it was wrong, also im not sure what units to use.
September 28, 2010

Algebra
Add and subtract the rational expressions as indicated. Be sure to express your answer in simplest form ((9)/(7x)) + ((1)/(2y)) -1 I got an aswer of (16y)/(7x+2y+1)) but when I submit it shows me as wrong. Can anyone help, thanks
September 28, 2010

Chemistry
Please help I am 11 and lost.y question is a piece of tungsten has a volume of 5.2cubic centimeters and and mass of 100 grams. What is the density of tungsten? I am in sped class don't understand how to solve it.
September 27, 2010

chemistry
DrBob222 I am 11 years old and in sped I don't understand your answer. Please give a little more detail.
September 27, 2010

chemistry
Tungsten is a dense metal that is used to make the filaments in incandescent light bulbs. A piece of tungsten has a volume of 5.2 cubic centimeters and a mass of 100 grams. What is the density of tungsten?
September 27, 2010

physical science
3 hours
September 26, 2010

physical science
a component or assembly of components that performs a specific function
September 26, 2010

Random?
good question. i have often wondered that my self
September 26, 2010

Random?
it gives the person encouragement and a sence of accomplishment
September 26, 2010

Algebra
Could someone help me with this question Simplify the rational expression. (3x^2y+9xy^2-12y^3)/(36x^3y-27x^2y^2-9xy^3)
September 26, 2010

Algebra
Could someone help me with this question Simplify the rational expression. (3x^2y+9xy^2-12y^3)/(36x^3y-27x^2y^2-9xy^3)
September 26, 2010

Macroeconomics
What are the key elements of the scientific method and how dose this method relate to economic principles and laws?
September 26, 2010

English/General Knowledge
What are some of the social issues in today's society? I'm supposed to make an Advocacy speech to effect positive changes on a social issue.
September 26, 2010

earth science
how did cultures throughout history attempt to explain events such as volcano eruptions, earthquakes, and ecipses?
September 24, 2010

Algebra
oh I see... but can u still simplify it further by taking -1?
September 22, 2010

Algebra
Simplify the rational expression. (45y-9xy)/(x^2y-25y) I got an answer of 9(5-9x)/((x-5)(x+5)) but it seems to be wrong. Can anyone solve this for me and see what they get? Thank you
September 22, 2010

Algebra
It still shows me as wrong when I submit online
September 22, 2010

Algebra
so will the final answer be 9(5-9x)/((x-5)(x+5)) ?
September 22, 2010

Algebra
sorry what I was suppose to write was 9y(5-9x)/y((x-5)(x+5)) do you see where there is still a mistake?
September 22, 2010

Algebra
I did that u get 9y(5-9x)/((x-5)(x+5)) but it is still wrong
September 22, 2010

Algebra
Simplify the rational expression. (45y-9xy)/(x^2y-25y) I got an answer of 9y/y(x+5) but it seems to be wrong. Can anyone solve this for me and see what they get? Thank you
September 22, 2010

science
Its stellar classification, based on spectral class, is G2V, and is informally designated a yellow star, because its visible radiation is most intense in the yellow-green portion of the spectrum.[13] In this spectral class label, G2 indicates its surface temperature of ...
September 21, 2010

Math
I tried using the formula there, but my answer seems wrong. I end up with the integral of radical x + a weird fraction, which doesn't seem to integrate well. Am I doing something wrong or is it just a complicated problem? Thanks for the help
September 21, 2010

Math
Find the area of the surface generated by revolving the curve y = (x + 3)^1/2, 2 ≤ x ≤ 4 about the x-axis.
September 21, 2010

algebra
pliis the equivalent form indicated for each of the following fractions 7/9=?/45 and 11/5=?/35 pliis help meee
September 19, 2010

9th grade
pliis the equivalent form indicated for each of the following fractions 7/9=?/45 and 11/5=?/35 pliis help meee
September 19, 2010

College Chemistry
a)What is the theoretical yield for this reaction under the given conditions? b)What is the percent yield for this reaction under the given conditions? 1.41gH2 is allowed to react with 10.4gN2,producing 2.46gNH3
September 18, 2010

Chemistry
I got 4.6102*10^-6 and it is wrong...Can you step me through the problem?
September 18, 2010

physics
two ropes are attached to a 200. kg sled. A 490. newton dog attached to on eo the ropes applies a force of 300. N b north of the rope. A 35.0 kg dog attached to the second rope applies a force of 125 N b 36.9 degrees south of west to the rope. Calculate the net force applies ...
September 17, 2010

Algebra 2
factor 5x^2-35+60
September 16, 2010

HIS 125
• Create a timeline of four to six significant events that occurred during World War II. o Include the following in your timeline:  The year the event occurred  The name and a short description of the event  A short explanation of why the event was...
September 15, 2010

math factoring
5x^2-35+60
September 15, 2010

chemistry
labelled diagram of an experiment magnesium with oxygen
September 13, 2010

4th grade
What subject do you have to write about? If your teacher didn't give you one, pick a subject that you would like to write about :)
September 11, 2010

fractured math definitions
a chord
September 8, 2010

physic basics
Use the fact that the speed of light in a vacuum is about 3.00 x 10^8 m/s to determine how many kilometers a pulse from a laser beam travels in exactly 1.7 hour(s). i converted 1.7 hours to secs but im stuck there and i dont know what to do for the rest of the problem
September 8, 2010

English
Some islands are of the coast of Californa. What is th sbject and prepositio in this sntence?
September 8, 2010

science
What is the latin greek word for single PLZ HELP ME !!!!!!
September 7, 2010

bio II
what is the "transforming factor" that alters pneumonia bacteria?
September 7, 2010

math
find c from the formula h=abc when h=40, a=2, b=5
September 5, 2010

Chemistry
A sample of 8.44 grams of NaOH is dissolved into 536 mL of aqueous 0.250 M NaOH (assume no volume change). This solution is then poured into 1.96 gallons of water. You may assume that the two volumes can be added.) What is the concentration of NaOH in the final solution? ...
September 3, 2010

Algebra 2 Honor
On one day the value of $1.00 U.S. was equivalent to 0.77 euro. On the same day $1.00 U.S. was equivalent to $1.24 Canadian. Write the function to represent the value of Canadian dollars euros. What is the value of the function for an input of 5 rounded to nearest cent, and ...
September 3, 2010

7th grade
What is the least common multiple of 35, 70, 140
September 2, 2010

social studies
Name two states that extend futher south than louisiana
September 2, 2010

algebra
how do you graph the function... f(x)=2^x over the interval -2 is less than or equal to x is less than or equal to 3. Help please! THANKS!
September 2, 2010

algebra
solve for r a+ar=b+r Help! Thank you.
September 2, 2010

8th grade science
science what is a control group
August 31, 2010

pre algebra
how do you complete this problem -4x+7=11
August 31, 2010

CHEMISTRY
umm DrBob222 i still dont understand wat u did.... lik is it possible for a step-by-step help?
August 30, 2010

CHEMISTRY
1. You have 88.8 mL of 2.50 M solution of Na2CrO4 (aq). You have 125 mL of a 2.50 M solution of AgNO3 (aq). Calculate the concetration of Na+ when the two solutions are added together. 2. You have 75.0 mL of 2.50 M solution of Na2CrO4 (aq). You have 125 mL of a 1.84 M solution...
August 30, 2010

Physics
Two non-parallel light rays initially converge to a single point on a screen. A rectangular block of glass is now placed somewhere in front of the screen, in the path of the light rays, so that the glass surface is parallel to the screen. Where is the new convergence point of ...
August 30, 2010

Physics
very narrow beam of white light is incident at 40.40° onto the top surface of a rectangular block of flint glass 11.8 cm thick. The indices of refraction of the glass for red and violet light are 1.637 and 1.671, respectively. Calculate the dispersion angle (i.e., the ...
August 30, 2010

please check
What about the sentence check #2?
August 30, 2010

AP Physics
A rock thrown straight up with a velocity of 30 m/s from the edge of a building just misses the building as it comes down. The rock is moving at 47 m/s when it strikes the ground. How tall was the building? The accelera- tion of gravity is 9.8 m/s2 . Answer in units of m.
August 24, 2010

Confused-Math
Your calculator gives an answer of x=1.1578074156, y=2E-13 when using ROOT or ZERO in the graphing mode. Give the coordinates of the x-intercept your calculator has given you to the nearest thousandth. <<< ? I have no idea how to solve these. Someone please explain ...
August 22, 2010

math
how do you find all real and non real solutions to these type of equations?: (x+3)^2 - 81=0 (x+1)(x-2)=18 THANKS!
August 22, 2010

Math
But how do you figure out T? Out of the multiple choice answer nothing is coming close to one of the answers these are the multiple choice answers A) $2116.98 B) $18.57 C) $1857 D) $1818.44
August 19, 2010

Math
Choose the one alternative that best completes the statement or answers the question. Solve the problem. Assume that simple interest is being calculated in each case. Round your answer to the nearest cent. Martin takes out a simple-interest loan at 7.5 %. After 6 months, the ...
August 19, 2010

math
5x2=10
August 14, 2010

geometry
the endpoints of a line segment graphed on a cartesian coordinate system a (-2,6) and (1,2). what are the aoordinates of the midpoint of the segment?
August 12, 2010

Chemistry
Calculate the cell potential for the electrochemical cell consisting of Ag metal in a 0.500 M AgNO3 solution and Fe metal in a 3.0 M Fe(NO3)3 solution.
August 8, 2010

algebra
The length of a rectangular field is 18 m longer than the width. The field is enclosed with fencing and divided into two parts with a fence parallel to the shorter sides. If 216 m of fencing are required, what are the dimensions of the outside rectangle?
August 8, 2010

History
What is the outcome/results of the Genocide Rwanda conflict & what are its consequences for the UN?
August 4, 2010

Algebra
If a square handkerchief has an area of w^2+4w+4feet, what is the length of one side?
July 31, 2010

math
-35
July 29, 2010

math
resipical x/7=-5 ?
July 29, 2010

math
-15
July 29, 2010

math
multiply by the resipical 1/5p=-3
July 29, 2010

math
1/4y=-12 , 1/5p=-3 , x/7=-5
July 29, 2010

caring for scool-age childfren
for your second Q the answer is C lives with her parents,her grandm.....
July 24, 2010

caring for school -age children
for your second Q;is D is emphasizes the role......
July 24, 2010

calc
find the average rate of change on the indicated intervals f(x) = x^3 - 2x ; [0,4]
July 20, 2010

algebra
can someone pls show me how to work this 1) x+y=0 7x-7y=0 2) 2x-5y=1 3x+y=-7 3) 1/3x-4=6 x-3y=0 can someone show me how to work these please asap today thanks
July 12, 2010

social studies
These organizations have done very little on reducing tribal poverty and encouraging prosperity. As noted in our text: Today’s Native Americans are the “most undernourished, most short-lived, least educated, least healthy.” The BIA was organized to be in charge ...
July 8, 2010

ETH/ 125
Do you still need help? I have this paper I wrote for the same class, you can look over it to get some good ideas. Let me know if you still need it.
July 8, 2010

ENGLISH
What is the proper noun and common noun in this sentence. On his journey back to America, Victor sailed on the Princess.
July 7, 2010

physics
how is Gauss's Law use in determining the electric field anywhere around a point charge and how is this related to Coulomb's law?
July 6, 2010

Physics
Hello, Here is what I came up with: A) The vector pointing down is the weight from the stone on the Earth. To make the net force zero, you need to have an equally opposite force exerting itself on the stone, say the ground pushing its own force against the stone, the two ...
July 6, 2010

physics
two equally charged plates with finite length l is positioned side by side (parallel) and separated by distance d. what is the electric field intensity between the plates?
July 1, 2010

physics
consider a solid metal ball with radius r and charge q. what is the electric field intensity at the center, anywhere inside the ball and anywhere outside the ball?
July 1, 2010

chemistry
The pH of a 0.10 M salt solution is found to be 8.10. Determine the Kb and the degree of ionization of the basic ion.
June 27, 2010

Statistics
Find z such that 20.3% of the standard normal curve lies to the right of z. 0.831 0.533 -0.533 -0.257 0.257
June 24, 2010

Statistics
As x increases, does the value of r imply that y should tend to increase, decrease, or remain the same? Explain. ( Since r is zero, as x increases, y decreases. Since r is negative, as x increases, y remains the same. Since r is negative, as x increases, y decreases. Since r ...
June 24, 2010

Statistics
. Suppose a certain species of fawns between 1 and 5 months old have a body weight that is approximately normally distributed with mean kilograms and standard deviation kilograms. Let x be the weight of a fawn in kilograms. Convert the following x interval to a z interval. ...
June 20, 2010

Statistics
Assuming that the heights of college women are normally distributed with mean 62 inches and standard deviation 3.5 inches, what percentage of women are between 58.5 inches and 72.5 inches? (Points: 5) 34.1% 84.0% 15.7% 13.6% 97.6%
June 20, 2010

Statistics
The heights of 18-year-old men are approximately normally distributed with mean 68 inches and standard deviation 3 inches. What is the probability that the average height of a sample of ten 18-year-old men will be less than 70 inches? Round your answer to four decimal places. ...
June 20, 2010

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