Friday
October 24, 2014

Posts by Mj


Total # Posts: 75

algebra
2/5 of the total questions on a test have the answer Choice of C. If 50 questions have the answer C, how many total questions are there? I've tried 20/50 2/5 times 50/1
August 26, 2014

math
The game involves tossing a penny and a dime along with rolling a die. to win the penny land heads up, the dime land tails up and roll a 6 on the die. what is the probability that he will win on the first play
July 28, 2014

analytical chemistry
You are asked to make a 0.3M CaCl2 solution in a flask that can hold 200 ml. How would you do it?
February 15, 2014

analytical chemistry
How much NaOH (in grams) would there be in 0.25 litre of a 0.3M solution?
February 15, 2014

physices
an object is falling freely from rest of height of 65m above the ground what is the height of the object from the ground in meter when it reaches velocity of 20m/s?
October 30, 2013

physics 1
a helicopter is flying at an altitude of 1000 m above the ground, with a horizontal velocity of 50 m/s, how far from the rally point should the relief package be dropped?
April 24, 2013

chemistry
20mL ethanol(density=o.789g/mol) is dissolved in sufficient water to produce a 200mL solution. the density of the solution is 0.982g/mL. what is the molarity?
March 11, 2013

Math
What the next number should be? 6 18 20 10 30 32 16
February 25, 2013

english
Proper use of apostrophe in sentence: Oklahoma's dust storms in the 1930's blew away tons of soil. Correct?
January 23, 2013

Algebra II
The weight of a body varies inversely as the square of its distance from the center of the earth. If the radius of the earth is 4000 mi, how much would a 200 lb man weigh 1000 mi above the surface of the earth?
January 3, 2013

math
If you run 1 mile on Monday and then double everyday how many miles will you run by friday?
October 11, 2012

Math
Joe picked leaves, he has 3 kinds. He has 2 times as many elm leaves as maple leaves, and 5 times as many oak leaves as maple. He has 32 leaves. How many of each kind does Joe have?
October 2, 2012

calculus
pls integrate and differentiate e^x^2 and x/y square root of x^2+y^2 in terms of x.
July 5, 2012

Research skills
Place the following call numbers in the proper order based on the Dewey Classification A. 530 C68s 1985 B. 530.1 A12f 1976 C. 530.028 M52c D. 530 A82u 1988 E. 530.0274 C52e
May 31, 2012

physics
Sam is 180cm tall. He stands 60 cm in front of a tall plane mirror.How tall is Sam's image
April 17, 2012

Chemistry
Toluene, C6H5CH3, is a liquid similar to benzene, C6H6. It is the starting material for other substances, including trinitrotoluene (TNT). the molality of toluene in a solution that contains 26.2 g of toluene and 132 g of benzene. Calculate the molar fraction of toluene and ...
March 29, 2012

Chemistry
Toluene, C6H5CH3, is a liquid similar to benzene, C6H6. It is the starting material for other substances, including trinitrotoluene (TNT). Find the molality of toluene in a solution that contains 26.2 g of toluene and 132 g of benzene.
March 29, 2012

Chemistry
An aqueous solution is 0.257 m NaOH. What are the boiling point and freezing point of this solution?
March 29, 2012

chemistry
Calculate the vapor pressure lowering of water when 5.67 g of glucose, C6H12O6, is dissolved in 25.2 g of water at 25 ºC. The vapor pressure of water at 25º C is 23.8 mmHg. What is the vapor pressure of the solution?
March 29, 2012

Statistics
The distribution of scores on a test is mound-shaped and symmetric with a mean score of 78. If 68% of the scores fall between 72 and 84, which of the following is most likely to be the standard deviation of the distribution? 3, 1, 4, 6?
March 12, 2012

algebra
The diameter of an electric cable is normally distributed, with a mean of 0.8 inch and a standard deviation of 0.01 inch. What is the probability that the diameter will exceed 0.81 inch
March 8, 2012

statistics
. An automobile is selling a new model car with an advertised in‐city mileage of 27 MPG. As with most car models, there is no associated measure of variability (variance, SD, etc.) included with the advertised MPG. You write the manufacturer and request details on ...
March 1, 2012

chemistry
Luckily I can ask for more help tomorrow...lol Is the formula different for "how would you make 40mL of 30%ETOH starting with 75% ETOH and water" different (because it's all liquid vs. solid and liquid?) txs
February 13, 2012

chemistry
the question actually reads "how would you MAKE .25L of a 0025M solution of NaCL starting with solid NaCL and water? 2nd Q: ends with starting with 2.0M NaCL? Based on a lab that we haven't even had yet.....lost. txs
February 13, 2012

chemistry
Convert .25 L of a .025 M solution of NaCL starting with solid NaCI and water
February 13, 2012

algebra
: If Bobby fives Jane three pens, they have the same number of pens. But if Jane gives Bobby three pens,he will have three times as many pens. How many pens does each student have?
February 6, 2012

physics
To show your friends how strong you are, you start pushing a big container with mass 50 kg along a long, flat highway. While you are pushing the container in a horizontal direction with an average force 350 N, it moves with acceleration 1 m/s/s. After 5 seconds of pushing you...
November 16, 2011

math
find the sum of the square of -3 1 over 3 and the cube 3 over 2..
November 9, 2011

math
find the sum of the square of -3 1/1 and cube of 3/2
November 9, 2011

Math
Danny gave Rose $28 less than she already had. She now has $120. that means Rosario originally had how much????
November 1, 2011

Finance
How much is a 9 month CD worth that started out at $1,000.00 at 4.40% worth after 15 years
October 4, 2011

History
b is wrong
October 3, 2011

chemistry
(a) (i) Draw the abbreviated structural formula, in truncated form, of the compound that would be produced from the reaction of one molecule of glycerol with one molecule each of A, B and C .Circle and name the new functional group(s) produced. What type of reaction is ...
September 15, 2011

science
Newton’s law of gravity is used with great success in most everyday situations, and indeed, in planning planetary space missions such as the Rosetta probe. However, Einstein’s theory of general relativity and a theory of quantum gravity are needed to describe the ...
August 28, 2011

alegbra
The diameter of an electric cable is normally distributed, with a mean of 0.8 inch and a standard deviation of 0.01 inch. What is the probability that the diameter will exceed 0.81 inch
August 27, 2011

science
The total power output of the Sun is about 3.8 × 1026 W, and the power-producing core has a radius of about 1.4 × 105 km (about 20% of the full radius of the Sun). Using these figures and your knowledge of the energy release in the proton– proton chain ...
August 24, 2011

science
The brightest galaxy in the Bootes cluster of galaxies is found to have a redshift of 0.13. (Assume the speed of light, c, is 3.0 × 10 8 m s−1.) (i) Assuming the Hubble constant, H0, is 70 km s−1 Mpc−1 to two significant figures, calculate the distance ...
August 22, 2011

biology
In chickens, males have two Z sex chromosomes (ZZ) and females have one Z and one W sex chromosome (ZW). The mechanism for inheritance of the sex chromosomes is exactly the same as for X and Y sex chromosomes in other species. In chickens the character of ‘barred’ or...
July 4, 2011

biology
A poultry farmer hopes to profit from the current craze for keeping egg laying chickens as pets and wishes to increase his stock of interesting and unusual breeds. (a) The farmer crossed a pure-breeding white chicken with a pure-breeding black chicken and found that 100% of ...
July 4, 2011

business calculus
For the function f(x) = 1/(x2+14x-42) there are two vertical asymptotes. Determine the x-coordinate of each one
February 10, 2011

Physics
A hydrometer is an instrument for measuring the specific gravity of a liquid. For example, producers of maple syrup use the hydrometer to find how much sugar is in the collected sap. Markings along a stem are calibrated to indicate the specific gravity for the level at which ...
January 26, 2011

7th grade
i need help in Math with Fractions can i have some pointer to remember it. P.s. Thank you guys if u can help
December 7, 2010

Physics
20 C
December 2, 2010

physics
a current-carrying wire is oriented at right angles to a uniform magnetic field. if the lenght of the wire is 0.50m and it experiences a force at 0.90n while carrying a current of 4.0a. what is the strength of the magnetic field?
December 1, 2010

5th grade
what is 1/5 of 10
November 11, 2010

Physics
This may seem tricky but the key to realize is that electric forces and gravitational forces = 0. In this case Mg=Eq since the charge floats in the electric field. there the equation = E=mg/q and that'll be your answer. (You can solve the math).
October 4, 2010

English
I think condescending is a very nice choice. The author is not just being critical; he belittles the spies. They are not in the same league as James Bond; the author judges them with derision: "not only out of date; they were also out of their depth."
August 6, 2010

English
B is correct. The comma rule says to set an appositive off with a comma. Deep thinking is indeed in apposition.
August 5, 2010

eng. lll analogies
Prologue is before the story Epilogue is after the story Preface is before the novel Appendix comes at the end.
August 5, 2010

Math
The mean height of 20 boys and 14 girls is 161 cm. If the mean height of the 14 girls is 151 cm, calculate the mean height of the 20 boys.
March 8, 2010

Math
A small factory employs 7 experienced and 5 inexperienced workers. The mean monthly wage of these 12 workers is $700. Given that the mean monthly wage of 5 inexperienced workers is $602, calculate the mean wage of the 7 experienced workers.
March 8, 2010

Math
How do I find the Mean, Median and Mode from a frequency table?
March 7, 2010

Math
thanks for helping.
March 7, 2010

Math
How do i solve the following by factorization: 1) 7.7^2-2.3^2 2) 43*56+43*44 I know how to do these manually but not by factorization.
March 7, 2010

Physics
Compare magnetic and electrostatic forces. In what ways are they a) similar, b) different
February 18, 2010

Chemistry
What is the difference between organic acids and mineral acids?
February 17, 2010

Math
How to convert: cm to mm m to cm m to mm m to km km to m
February 15, 2010

Physics
Anyone can help me solve 2 of those problems A man lifts a box of books that weigh 185N. The box is lifted 0.80m. How much work does the student do on the box? A thermometer can measure temperature to the nearest enth of a degree. Which of the following readings gives the ...
January 25, 2010

Physics
I need help with these three questions, thanks 1)The man lifts a box that weght 185N. The box is lifted 0.80m. How much work does the man do on the box? 2) 0.180kg ball falls 2.5m How much work does the force of gravity do on the ball? a)44J b) .45J c) 1.76J d)4.4J e) None of ...
January 23, 2010

Physics
I need help with these three questions, thanks 1)The man lifts a box that weght 185N. The box is lifted 0.80m. How much work does the man do on the box? 2) 0.180kg ball falls 2.5m How much work does the force of gravity do on the ball? a)44J b) .45J c) 1.76J d)4.4J e) None of ...
January 22, 2010

Physics
I need help with these two uestions, thanks 1)The man lifts a box that weght 185N. The box is lifted 0.80m. How much work does the man do on the box? 2) 0.180kg ball falls 2.5m How much work does the force of gravity do on the ball? a)44J b) .45J c) 1.76J d)4.4J e) None of ...
January 22, 2010

4th grade
Classify th triangle by its sides and then by its angles.
March 23, 2009

Pre Calculus
Write an explicit formula... 3,4/3,1,6/7,7/9 Can someone help me out?
March 4, 2009

French
Can someone tell me if these sentences are all grammatically correct? Merci! elle serait contente de nous conduire au magasin le 8 avril. Nous pouvons y emmener deux personnes.
February 12, 2009

Statistics
I need to do a project for ap stats. It can be anything im interested in, and i have to perform some tests and all that I need some ideas!! Somthing that would be interesting..
May 28, 2008

Shakespeare
Thanks for the help! The more I looked at it, the more confused I became!!
February 23, 2008

Shakespeare
I need help with the meter in Shakespeare's Sonnet 87. I know usually his are iambic pentameter, but with eleven syllables in each line I can't make that work. HELP.
February 23, 2008

government
you can run a search on google
January 14, 2008

Vocabulary
Everyone's busy
September 19, 2007

Vocabulary
Does anyone have the same Vocabulary book I do? It's about 3/4 the size of a textbook, with a orange cover with a blue pencil on it. If so, could someone please tell what the words are for Unit 3? Thank you!
September 19, 2007

PHYSICS
A person holds a ladder horizontally at its center. Treating the ladder as a uniform rod of length 2.65 m and mass 6.84 kg, find the torque the person must exert on the ladder to give it an angular acceleration of 0.301 rad/s2 We tried T = mr^2(alpha), but that was wrong. We ...
June 4, 2007

PHYSICS
The drawing shows a large cube (mass = 34 kg) being accelerated across a horizontal frictionless surface by a horizontal force P. A small cube (mass = 3.3 kg) is in contact with the front surface of the large cube and will slide downward unless P is sufficiently large. The ...
June 4, 2007

English
Could someone tell me if the punctuation in this sentence is correct? We received a tour of the offices after which, we met in the conference room where Dick and Jane joined the group. Could someone tell me if the punctuation in this sentence is correct? We received a tour of ...
August 24, 2006

English // The Scarlet Letter, Help!
Dimmesdale to ease guilt: 1. Holds night vigils -- punnishing the body for the good of the soul. He goes without sleep. 2. He fasts 3. He keeps a bloody scourge in his closet and beats himself. .
August 6, 2006

home economics
what is the philsophy of home economics education? Wouldn't this vary with time, culture, and many other factors? And from school to school? I remember in the 1950's at the University...most subjects were taboo for women to take, such as engineering, business, math. ...
June 21, 2006

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