Tuesday
October 21, 2014

Posts by ray


Total # Posts: 393

math
The distance from the center of a round table top to the edge of the table top is 4 ft. What is the area of the table top?
August 12, 2011

informal logic
Since Jessica’s participation in local politics increased significantly after she joined her school’s political science club, it is clear that her involvement in that club led her to take an interest in politics. The argument above is flawed because
August 9, 2011

Mathematics
The standard deviation of given population is 4.5 with a mean of 60 and the refit population has a standard deviation of 5.2 with a mean of 75. Calculate the coefficient of variation for both populations and comment on the results.
July 22, 2011

Mathematics
A card is selected at random from an ordinary pack of 52 playing cards.state the probability the card is a club.
July 22, 2011

Chemistry
A sample of glucose, C6H12O6, contains 1.300x10exponent21 atoms of carbon. How many atoms of Hydrogen does it contain? How many molecules of glucose does it contain?
June 15, 2011

Algebra
The following logistic function describes the percent of the population of a city that will purchase the local newspaper. P(t)=(65)/(1+34e^(-0.223 t)) "t" is the number of days since the newspaper is first launched. When will the newspaper reach 60% of the population
June 13, 2011

IT Fundmentals of Programming w/ Algoriths & Logic
How would I write an object-oriented pseudocode for a system that allows a user to enter their name into a text box? When they press the Go button a message will be displayed in a label that says “Hello” and their name.
June 11, 2011

Math please help please help
Out of 42 kids in a class twice as many failed Ela as math,4 failed both. If 7 failed neither, find how many failed each subject. Please help and show work it would be great thanks i really need help thanks
June 6, 2011

chemistry
What is the molarity of hcl is 35 ml is neutralized. By 500 ml of M NaOH?
May 23, 2011

math
y=(-3/4)x-2
May 1, 2011

science
A solution of HNO3 has a pH of 4.5, What is the molarity of HNo3?
April 26, 2011

Math
During the first part of a trip, a canoeist travels 33 miles at a certain speed. The canoeist travels 2 miles on the second part of the trip at a speed 5 mph slower. The total time for the trip is 4 hours. What was the speed on each part of the trip? The speed on the first ...
April 21, 2011

Statistics
The computed t was -.926 with df of 24 for p>.o5. what may you say about the null hypothesis?
April 20, 2011

space
How much is 2000 kg in outer space?
April 19, 2011

Education
Describe the difference between word-level skill and text-level skill attainment for ELL students. Then, describe specific things teachers can do to increase ELL students' text-level skills.
April 4, 2011

Education
Compare and contrast the teaching of comprehension strategies to ELL students and to native English speakers.
April 4, 2011

Education
What are some words of wisdom to think about when teaching ELLs?
April 4, 2011

Education
How do you modify a lesson to teach ELLs?
April 4, 2011

Education
How is an ELL's level of language proficiency determined? How do you modify your assessments to evaluate ELLs understanding of content?
April 4, 2011

spanish
help me translate please!! i tried it myself but it was a mess! :( My name is Isabella and I am 14 years old. I live with my parents and two brothers in the outskirts of Newport. My school is a few miles away from where I live, I go to school by coach but I used to go to ...
March 12, 2011

Geometry
I find these questions so difficult! I've been trying to solve them but I just can't. As they are diagrams they are hard to express in words, so the questions are the links below: 1) tinypic(.)com/r/25z7486/7 2) tinypic(.)com/r/4uhrg3/7 3) tinypic(.)com/r/juu9zs/7 (...
March 8, 2011

English
where can i find help about direct and indirect objects
March 1, 2011

Stoichiometry Problems
How many grams of phosphorus can be obtained from the decomposition pf 45kg of POCL3. 2 POCL3 --(> 2P + 3Cl2 + O2
February 27, 2011

Physics
A 200-g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.250 s. If the total energy of the system is 2.00 J, find (a) The force constant of the spring and (b) The amplitude of the motion.
February 17, 2011

science
THIS IS A GUESS!!! silent killer means that you might die instantly. If you have a high blood pressure, you might die.
February 9, 2011

anatomy
what is the differnce in primary atmospheric gases at 1800 ft?
February 2, 2011

anatomy
summary of "into thin air" case study by jennifer lundmark
February 2, 2011

statistics
Run the simulation using n = 30 and N = 10 for a uniform, a bell-shaped, and a skewed distribution. § Identify the mean of the sampling distribution of sample means for each distribution. § Evaluate if the results are what you expected for each distribution. Run the ...
January 28, 2011

Math
Solve the proportion for u. (u-2):(u+3) = 4:3
January 11, 2011

Physical Science
Thanks alot I really appreciate it
January 5, 2011

math
0.05
December 20, 2010

math
The volume of a ball is 288 pi cm^3. Find the dimensions of a rectangular box that is just large enough to hold the ball. use 3.14 for pie
December 11, 2010

math
The volume of a ball is 288 pi cm^3. Find the dimensions of a rectangular box that is just large enough to hold the ball. Use 3.14 for pie
December 8, 2010

math
The volume of a ball is 288 pi cm^3. Find the dimensions of a rectangular box that is just large enough to hold the ball.
December 8, 2010

11th grade
Consider two vectors where F1 = 38 N, F2 = 58 N, and = 240o and = 25o, measured from the positive x-axis with counter-clockwise being positive. What is the magnitude of the equilibriant?
December 5, 2010

spelling
Satelites Is that spelled correctly?
December 1, 2010

math
66 2/3 % of what number is 64.2% I know the answer is 64.2% put I need the steps to get there.... thank you
November 30, 2010

Math
I need to write the specified ratin as a simplified fraction. A certai lake is 1100 ft deep. A nearby lake is 300 feet deep. Write the ratio of te fist lake's depth to the second lake's depth.
November 17, 2010

math
A building cast a shadow 42m long. At the same time, the shadow cast by a 34 cm tall pole is 86 cm long. Find the height of the building
November 14, 2010

statistics probability
The scores on a test are normally distributed with a mean of 140 and a standard deviation of 28, what is the score that is one standard deviation above the mean?
November 14, 2010

history
create a collage that shows how greek culture is reflected in modern-day society.
November 8, 2010

chemistry
Propane gas is used to heat a tank of water. If the tank contains 200 L of water, what mass of propane will be required to raise its temperature from 20 degrees C to 65 degrees C. The heat of combustion for propane is -2220 kJ/mol.
November 4, 2010

7th grade, math
-10=-1+3n
October 21, 2010

Chemistry
What will be the final temperature if 2000g of copper at 95 degrees loses 10 kcal of heat?
October 15, 2010

Chemistry
If the decomposition of 3.785 g iron (III) chloride yields 1.302 g iron and 2.483 g chlorine, how many grams of iron and chlorine are produced when 2.175 g iron (III) chloride decomposes?
September 28, 2010

8th grade
How can I get rid of the -x this is the problem -x-6=-5 Thanks
September 23, 2010

physiscs
so what?
September 21, 2010

physiscs
a pendulum of the length L is suspended from the ceiling of an elevator. When the elevator is at rest , the period of the pendulum is T. In instant when the pendulum reaches its highest position the elevator starts the free fall. What is the period of the pendulum if the ...
September 21, 2010

statistics
0.4
September 20, 2010

physics
Soccer player #1 is 8.6 m from the goal. If she kicks the ball directly into the net, the ball has a displacement labeled A. If, on the other hand, she first kicks it to player #2, who then kicks it into the net, the ball under goes two successive displacements, Ay and Ax. ...
August 25, 2010

physics
Given the quantities a = 9.7 m, b = 4.2 s, c = 69 m/s, what is the value of the quantity d = a^3/(cb^2)?
August 25, 2010

physics
The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is 85.0 m. In part a the person is looking at the base of the antenna, and his line of sight makes an angle of 35.0 ...
August 25, 2010

geometry
Center and radius of x^2 + y^2 – 4y = 0.
August 17, 2010

math
Ok we have to graph a step function. I am given y=[-5x]. How do I write the chart for this in order to graph it?
August 6, 2010

British Literature
i need the answers! i dont have them
July 21, 2010

British Literature
1)What theory does the narrator propose in the first paragraph of “The Mark of the Beast”? A) In Asia, Asian gods rather than the Christian God control most events. B) The British Empire is doomed because it disregards the values and traditions of native peoples. C) ...
July 21, 2010

math 117
I am having an issue solving this appendix.... Answer the following questions. Use Equation Editor to write mathematical expressions and equations. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to ...
July 15, 2010

english
can anyone tell me the indivituality displayed by othello in the play by shakespeare?
June 19, 2010

physics
2.A ball rolls off a shelf with a horizontal velocity of v. At what horizontal distance from the shelf does the ball land if the height of the shelf is h above the floor? 3. A car travels around a circle with a diameter of 500 m at a constant speed of 25 m/s. The static ...
May 24, 2010

physics
4. Two masses of 3 kg and 5 kg collide head-on, the former moving to the right with the speed 5 m/s and the latter moving to the left with the speed 3 m/s.After collision they stick together. What amount of mechanical energy is lost? 5. A cylinder with a uniform density is ...
May 24, 2010

physics
A car is traveling with a constant speed 80 miles per hour a road that makes half a circle. What is the average velocity of the car?
May 24, 2010

Algebra
Simplify the expression (x(3/2)^(4/3)(√x)/x)
April 19, 2010

Math
At Shannons birthday Kira ate 3 pieces, Brazdley ate 2,Shauna ate 4, and Sammi ate 3 pieces of pizza. Now 1/4 of the pizza is left. How many pieces was the pizza originally cut into?
April 19, 2010

Religions Of the World
How do you think the importance of these relationships developed? What spiritual purpose do you think they serve for indigenous peoples?
April 15, 2010

Physics
A 225-kg crate is pushed horizontally with a force of 710 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate
April 14, 2010

Algebra
a. The sales representative informs you that there are 56 houses for sale with two floor plans still available. Use x to represent floor plan one and y to represent floor plan two. Write an equation that illustrates the situation
April 11, 2010

math
3x-6=6
March 23, 2010

Math 12
I need to write this parabola question 2(x+3)^2 -1 in general form. Not sure how to do it. Do I sqaure whats in brackets first? x^2 + 6x +9 then *by 2 so 2x +12x +18 - 1 = 0 Would this be the answer or am I doing it wrong? Any help appreciated.
March 16, 2010

math
if logx y=2, whic of the following is true?
March 16, 2010

trig 30
If cos^2 theta -6 sin 2 theta =0, one value of theta is a)0 degrees b) 90 degrees c)180 degrees or D)255 degrees. Please show me how to do it and not just give answer cause I have two more questions that are similar. Thanks so much.
March 10, 2010

Math 30 Trig
What is the value of theta if 9 cos^2 theta + 3 cos theta = 0 where 90 degrees < theta < 180 degrees?
March 7, 2010

Chemistry
If the radiation of an automobile contains 12L of water, how much would the freezing point be lowered by addition of 5 kg of prestone (glycol, C2H4(OH2))? How many kg of zerone (methyl alcohol, CH3OH) would be required to produce the same result? assume 100% purity .
March 6, 2010

chemistry
How much ethyl alcohol (C2H5OH) must be added to 1.00 L of water so that the solution will not freeze at -4°F?
March 6, 2010

social studies
indentify: green mountain boys
March 3, 2010

7th grade
describe three actions taken by the Second continental congress?
March 3, 2010

7th grade
indentify: green mountain boys
March 3, 2010

7th grade
describe three actions taken by the Second continental congress?
March 3, 2010

Physics
A 1.15 kg block slides down a 19.0 m long 29.0° incline at constant velocity. How much work is done by friction?
March 2, 2010

Trigonometry
Simply: cot(-x)-1/1-tan(-x) Is it -cotx? The other answer choice is: cotx.
January 2, 2010

Culteral Diversity
a. Capitalist
December 19, 2009

Mythology
I think you're missing the question...
December 14, 2009

Mythology
What is a possible explanation for the significance of two separate flood myths in which the water comes from the sky (Guatemalan mythology) and in the other, the water comes from the ground (African mythology)?
December 14, 2009

4th grade
1/6 or 1/2x1/3=1/6
November 30, 2009

algebra
Multiply it out then flip your answer. The numerator will become the denominator and likewise.
November 23, 2009

R-values(physics)
The ceiling of a single-family dwelling in a cold climate should have an R-value of 25. To give such insulation, how thick would a layer have to be if it were made of each of the following materials? (a) polyurethane foam (thermal conductivity k = 0.024 W/m · K)
November 23, 2009

Pre-Algebra
It seems like you're multiplying these together and if that is the case you will be adding the exponents. So, -10 + 5 will equal -5. Since it's asking for the answer to have positive exponents you will just have to show that b^-5 = (1/b^5) and there is your answer.
November 23, 2009

English
atthew interviews the director of computing services to get information for the company newsletter. What part of the writing process does this activity represent? Writing Editing Revising Planning
November 17, 2009

Physics
A block of wood with volume V floats in water with 0.68V submerged. In oil the block floats with 0.86V of its volume submerged. What's the density of the wood?
November 17, 2009

LITTERATURE
A grandson of the slave master John Ardinburgh declared that a "good funeral" for Bomefree would include a jug of whiskey. Sojourner Truth saw the jug as offering A. sin over atonement. B. an opiate for slaves. C. mere hypocrisy. D. too little too late.
November 12, 2009

Physics
A orbiting satellite stays over a certain spot on the equator of (rotating) Mercury. What is the altitude of the orbit (called a "synchronous orbit")?
November 11, 2009

Physics
A orbiting satellite stays over a certain spot on the equator of (rotating) Mercury. What is the altitude of the orbit (called a "synchronous orbit")?
November 11, 2009

Physics
Some people believe that the Moon controls their activities. The Moon moves from being directly on the opposite side of Earth from you to be being directly overhead. Assume that the Earth-Moon (center-to-center) distance is 3.82 multiplied by 108 m and Earth's radius is 6....
November 9, 2009

Math
Are you saying that (3m^(7k)^(-5))^(-3) is the problem given?
November 3, 2009

Physics
A tunnel of length L = 141 m, height H = 6.9 m high, and width 6.0 m (with a flat roof) is to be constructed at distance d = 60 m beneath the ground. The tunnel roof is to be supported entirely by square steel columns, each with a cross-sectional area of 960 cm^2. The mass of ...
November 3, 2009

Physics
A uniform beam of weight 520 N and length 3.4 m is suspended horizontally. On the left it is hinged to a wall; on the right is it supported by a cable bolted to the wall at distance D above the beam. The least tension that will snap the cable is 1200 N. What value of D ...
October 28, 2009

Physics
A uniform beam of weight 520 N and length 3.4 m is suspended horizontally. On the left it is hinged to a wall; on the right is it supported by a cable bolted to the wall at distance D above the beam. The least tension that will snap the cable is 1200 N. What value of D ...
October 28, 2009

Physics
A diver of weight 730 N stands at the end of a diving board of length L = 5 m and negligible mass. The board is fixed to two pedestals separated by distance d = 1.5 m. What are the magnitude and direction of the force on the board from the left pedestal? (Include the sign. ...
October 28, 2009

Physics
In a playground, there is a small merry-go-round of radius 1.20 m and mass 190 kg. Its radius of gyration (see Problem 85 of Chapter 10) is 91.0 cm. A child of mass 44.0 kg runs at a speed of 4.50 m/s along a path that is tangent to the rim of the initially stationary merry-go...
October 26, 2009

Physics
In a playground, there is a small merry-go-round of radius 1.20 m and mass 190 kg. Its radius of gyration (see Problem 85 of Chapter 10) is 91.0 cm. A child of mass 44.0 kg runs at a speed of 4.50 m/s along a path that is tangent to the rim of the initially stationary merry-go...
October 26, 2009

Physics
In a playground, there is a small merry-go-round of radius 1.20 m and mass 190 kg. Its radius of gyration (see Problem 85 of Chapter 10) is 91.0 cm. A child of mass 44.0 kg runs at a speed of 4.50 m/s along a path that is tangent to the rim of the initially stationary merry-go...
October 26, 2009

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