Sunday
February 14, 2016

Posts by lee

Total # Posts: 852

Physical sciences
Two forces A and B act at a point O. A=30 N at 60 degree and B= 40 N at 120 degree, relative to x-axis. Calculate the magnitude and direction of the resultant force using the method of perpendicular components.
January 26, 2016

Language arts
Change possessive to it's longer form. Paul rings the church bells at a moment's notice.
January 21, 2016

English
How would I change this sentence to possessive long form? Paul rings the church bells at a moment's notice.
January 21, 2016

Language arts
How would I change this sentence possessive to long form? Paul rings the church bells at a moment's notice.
January 21, 2016

College algebra
Show me how to solve x^4-1=0?
January 19, 2016

Math
Measuring across a 14 inches how many square inches is in the circle
January 15, 2016

maths
A bag contains six blue and 4 red balls ,3 balls are drawn at random replacement what is expected no.of red balls that can be drawn?
December 13, 2015

chemistry
ΔH°rxn is -114.14 kJ/mol. Calculate ΔH°f of gaseous nitrogen monoxide, given that ΔH°f of NO2(g) is 33.90 kJ/mol.
December 7, 2015

Math
25% of my candies are chocolate candiea i had 25 chocolate candies. How many candies did i have altogether?
November 17, 2015

science
Saturn rotation and revolution compared to earth
November 1, 2015

math
Jessica left the mall and drove toward the desert at an average speed of 40 mph. Shreya left one hour later and drove in the same direction but with an average speed of 60 mph. How long did
November 1, 2015

chemistry
Determine the quantity (g) of pure CaCl2 in 7.5 g of CaCl2•9H2O.
October 27, 2015

math
A car can travel 436 miles on 17 gallons of gas. How far can it go on 22 gallons of gas?
October 12, 2015

Personal Finance
Would you prefer a fully taxable investment earning 13.8 percent or a tax-exempt investment earning 10 percent? assume a marginal tax rate of 28 percent.
October 7, 2015

Chemistry
. Show a chemical reaction by which hardness is added to water that also explains the formation of caves in limestone formations?
October 6, 2015

Poetry
Never mind it was B :)
September 24, 2015

Poetry
What is rhyme scheme? (1 point_ The stressed and unstressed syllables within a poem a type of poetry that has no rhyme, but no rhythm (or patter of lines that rhyme within a poem) a poem that has a rhyming meter a poem consisting of ten syllables I think it's B but I'm...
September 24, 2015

Social Studies Native Americans
Thanks guys, I got a 100% and the answer was C :)
September 9, 2015

Social Studies Native Americans
I think it might be C or A
September 9, 2015

Social Studies Native Americans
How did the Native American groups of the northern west coast adapt to their environment? a: they built their homes out of a sun dried brick called Adobe b: they had a nomadic culture, moving there teepees from place to place c: they used tree bark to make canoes, and ate a ...
September 9, 2015

Social Studies
Where was the native American population density higher in 1500? A.Greenland 2. Caribbean islands 3.Present day Florida 4.Present day California CAN SOME HELP PLEASE :))
September 9, 2015

Organic Chemistry
Consider the crystallization of sulfanilamide from 95% ethyl alcohol. If impure sulfanilamide is dissolved in the minimum amount of 95% ethyl alcohol at 40°C rather than 78°C (the boiling point of ethyl alcohol), how would this affect the percent recovery of pure ...
September 8, 2015

Math and exopents
Given w = 10. w + w (12 - 2*2 * 3) * 7? Can some one help? the answers are: 73 12 6 3 but none of my calculations are 73, 12, 6 or 3 :(
September 6, 2015

Math
PLEASE HELP What is 6x3 / 9 - 1? I got 6 x 3 = 18 / 9 - 1 = 1 But for the answers it only 2 3 5 6 no 1 :((
September 6, 2015

Spelling
Does the word swimming have any silent letters? Is the second letter m silent?
September 2, 2015

math
In the figure below, angle y and angle x form vertical angles. Angle x forms a straight line with the 50° angle and the 40° angle. A straight line is shown and is marked with three angles. The first angle measures 50 degrees. The second angle measures 60 degrees. The ...
July 11, 2015

Differential calculus
The voltage across the plates of a capacitor at any time t seconds is given by V=Ve -t/CR, where V,C and r are constants. Given V = 300 Volts, C =0.12*10-6 F and R = 4*10 6 ohms Find the initial rate of change of voltage and the rate of change of voltage after 0.5 seconds
June 30, 2015

physics
apply E=kq/r^2 then you can directly find q
May 26, 2015

math
A rectangular dog pen that has the greatest possible area within a budget of 50$.A pen needs at least one gate for a dog. Fencing is $1.00 per foot, fence posts are $2.00 each and gates (3 feet wide) are $5.00 each. what is the area of a pen? pls help me !!!
May 21, 2015

physics
a softball is thrown at a speed of 40 miles per hour in a course that makes an angle of 60 degrees with the positive x axis. what is the initial speed in the horizontal direction?
May 18, 2015

Language Arts
1. A 2. C 4. B 5. D
April 23, 2015

Maths- Please help
Many thanks Reiny
April 19, 2015

Maths- Please help
How do i work out the mass of a flywheel. I am given the density as 7500kg/m3, a 500mm diameter and a 10cm thickness. Please help
April 19, 2015

science
A car,mass of 1500kg,accelerates at 2m/s from rest. Find 0-60mph time, use 1 mile=1613m
April 19, 2015

chemistry
What is the volume of dry O2 gas at STP, if it had a volume of 5.00 L at 103 kPa and 300 K?
April 15, 2015

chemistry
Consider the reaction 2 NO2 (g) ⇌ 2 NO (g) + O2 (g). If the initial partial pressure of NO2 (g) is 3.0 bar, and x is the equilibrium pressure of O2 (g), what is the correct equilibrium relation?
March 22, 2015

chemistry
Stoichiometry of a Precipitation Reaction – Lab Report Assistant Exercise 1: Stoichiometry and a Precipitation Reaction Data Table 1. Stoichiometry Values Initial: CaCl2•2H2O (g) Initial: CaCl2•2H2O (moles) Initial: CaCl2 (moles) Initial: Na2CO3 (moles) Initial...
March 18, 2015

trapezoidal method
dy dt = 1 + (t − y)^2, t ∈ [2, 3], y(2) = 1 use a step size of h = 1 and the Trapezoidal method to calculate by hand a numerical value for Y1 (≈ y(t = 3)).
March 10, 2015

Geometry
A red cross helicopter takes off and flies 75km at 20degree south of west. There it's drops off some relief supplies. It then flies 125 km at 10 degree west of north to pick up three medics. A. Make an accurate drawing of the two vectors decribed? B. draw the resultant it ...
March 10, 2015

math
18*5 1/16=
March 4, 2015

math
5*5 1/16=
March 4, 2015

Chemistry
calculate the density of 50.0 g of gold that occupies a volume of 2.59 mL.
March 3, 2015

Simultaneous equations
3x-14y=O and x-4y+1=0
March 1, 2015

logic and design
algorithm for waking in the morning, making and eating breakfast, I don't feel this is enough for my teacher can you help me. Idon't know if i have enough code start get up while not awake drink coffee endwhile if temperature < 65 then wear sweater else wear t-shirt...
January 30, 2015

physics
Its 900kg/m^3 for the density of liquid I think.
January 19, 2015

Physics
a rectangular box of negligible mass measures 5m long,1m wide and 0.5m high. How many kilograms of mass can be loaded into the box before it will sink in a freshwater lake?
January 6, 2015

Math
A carton contains 1 8/9 liters of apple juice. Rosalia drinks 1/6 liter of the juice every day. How much apple juice is left in the carton after a week?
December 9, 2014

physics
If an atom has an electron in the n = 5 state with ml = 3, what are the possible values of l?
November 24, 2014

accounting
which is an operating expense a salaries expense b payroll expense
November 22, 2014

Chemistry
Hello,Sorry, May I know what if the Ksp of both substances no different much??
November 18, 2014

Chemistry
The Ksp values of BaSO4 and SrSO4 are 1.1x10^-10 and 3.8x10^-7 respectively. Calculate the concentrations of Ba2+, Sr2+, and SO4 2- in a solution that is saturated with BaSO4 and SrSO4.
November 18, 2014

statistics
A researcher finds that two continuous, random variables of interest, X and Y, have a joint probability density function (pdf) given by: f(x,y)={cxy 0<=x<=1,0<=y<=1,x+y=>1, .........0 otherwise where c is a constant. (i) Find the value of c so that f(x,y) ...
November 13, 2014

statistics
You want to set up a games stall at the Winter Wonderland. You have a single pack of 52 cards and decide to play card games with your customers. The game is designed as follows. A customer draws 4 cards at random. For every “Ace” that the customer draws, he/she wins...
November 13, 2014

statistics
You want to set up a games stall at the Winter Wonderland. You have a single pack of 52 cards and decide to play card games with your customers. The game is designed as follows. A customer draws 4 cards at random. For every “Ace” that the customer draws, he/she wins...
November 13, 2014

chin
The following data shows the annual salaries of 12 randomly selected employees of a company (in £ 1000’s) on the X-axis and the average number of days they have taken days off work in the last 10 years on the Y-axis. Y X Y X 11.1 29.6 9.6 39.2 8.4 58.6 10.9 46.8 8.7...
November 13, 2014

chin
You want to set up a games stall at the Winter Wonderland. You have a single pack of 52 cards and decide to play card games with your customers. The game is designed as follows. A customer draws 4 cards at random. For every “Ace” that the customer draws, he/she wins...
November 13, 2014

English
Would down to earth be considered a character trait?
November 12, 2014

Algebra
"If possible, completely factor the expression. (If the expression is not factorable, enter NF.) x2 − 6x − 7"
November 10, 2014

social studies
why did a land bridge emerge between asia and north america
October 28, 2014

History
What was Thomas Jeffersons stance on the Declaration of Independence?
October 15, 2014

algebra
Foursquare provides a service that allows your friend to know your whereabouts by checking in . From march 2010 to march 2011 it experienced amazing growth. The function : F(x)=1/18x^2 - 1/12^x + 1/2 Evaluate F(3)? Determine when foursquare had 4.25 million users ?
October 12, 2014

algebra
suppose that an employee receives 7% increase in salary each year and that sequence a^n models the employees salary after n years. Is this sequence arithmetic, geometric or neither ? and please explain
October 12, 2014

Algebra
Darren McFadden of Arkansas placed second overall in the Heisman Tophy voting. Players are given 3 points for every first place vote, 2 points for every second-place vote, and 1point for every third place vote. McFadden received 490 total votes for a total of 878 points. If he...
October 12, 2014

English
What is your stance on BASE jumping
October 9, 2014

English
Are the authors stance and opinion similar ? Can you give me an example of each?
October 9, 2014

History
What is the importance of Samuel de Champlain colonizing Quebec for France
October 1, 2014

History
What is the importance or effect of these 1. France is a latecomer in the scramble for New World real estate. 2. French Catholic missionaries, notably the Jesuits, labored zealously to save the Indians for Christ and from the fur-trappers. 3. William Pitt, the elder, becomes ...
October 1, 2014

English
Can you help me come up with a really good introduction for my essay of the narrative of the life of Olaudah Equiano, that deals with his opinion of white men on the ship .
September 29, 2014

Math
you complete 3 cm of a necklace in1 hour. Each hour after the first hour you triple the length of the necklace. What is the length of the necklace after 3 hours?
September 23, 2014

English
How does the perspective of white crewmen toward the captives help support the main idea in "from the Interesting Life of Olaudah Equiano"
September 18, 2014

English
What is the relationship between literature and place
September 18, 2014

Pre-Calculus
Hello! Can someone check and see if these answers are correct? Thanks! 1.) If a line with slope of 1/2 is perpendicular to another line, then the slope of the other line is -2. TRUE or FALSE? (I choose True) 2.) If Segment QR || Segment TU and the slope of Segment TU is -3, ...
September 12, 2014

microeconomics
Using MS Excel or a table in MS Word, complete Table-1 (Joseph Farms, Inc., Cost and Revenue Data). Assume that the price is $165. Assume the fixed costs are $125, at an output level of 1. Assume that the data represents a firm in pure competition. Show your calculations. ...
September 10, 2014

Physics
A sailboat runs before the wind with a constant speed of 4.0m/s in a direction 34∘ north of west. how far west has the sail boat traveled in 29 minutes
September 2, 2014

math
calculate the resistances of (a) 100-watt 120-volt incandescent lamp, (b) a 750-watt 115-volt toaster, (c) a 1300 watt 110-volt portable iron.
August 24, 2014

Corporate Finance
180000
June 28, 2014

Org Chem
Caffeine has a distribuation coefficient of about 8 between Me Cl2 and water. Given 30ml of water containing 10 grams of caffeine. a. How much caffeine can be extracted with one 30mL portion of MeCl2? b. How much caffeine can be extracted with three 10mL portions of Me Cl2? c...
June 22, 2014

accounting
72200
June 20, 2014

math
A right cone has a height of 8cm and of volume of 250cm^3. Determine the radius of the base of the cone to the nearest centimeter.
June 4, 2014

math
44
May 28, 2014

math
How much money I saved if I follow this number pattern 5,10,15,?20?30
May 26, 2014

troy Academy
which of the following statements is the best supported by the new studies
May 8, 2014

troy Academy
based on the results of the studies, what should an elementary school teacher do to ensure that a child with an unusual name develops normal intellectual ability
May 8, 2014

troy Academy
the overall effect of the five amendments was to extend the vote to
May 8, 2014

troy Academy
a comparison of the average temperatures on any given day at points Z, X, and U on the globe would probably show that the temperature at point X is
May 8, 2014

TROY Academy
president kennedy was calling on u.s citizens to
May 8, 2014

statistics
It is known that the population mean for the Quantitative section of the GRE is 500, with a standard deviation of 100. In 2006, a sample of 400 students taking the GRE, whose family income was between $70,000 and $80,000, had a quantitative GRE score of 511. Perform a one-...
April 29, 2014

statistics
The Good Mental Health Insurance Company has determined the number of new clients a psychologist gets per month and their respective probabilities, as shown in the table below: Number of New Clients Probability 0 0.05 1 0.10 2 0.15 3 0.35 4 0.20 5 0.10 6 0.05 The probability ...
April 16, 2014

statistics
A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We Can Read Test, and ...
April 16, 2014

statistics
A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We Can Read Test, and ...
April 15, 2014

statistics
The Good Mental Health Insurance Company has determined the number of new clients a psychologist gets per month and their respective probabilities, as shown in the table below: Number of New Clients Probability 0 0.05 1 0.10 2 0.15 3 0.35 4 0.20 5 0.10 6 0.05 The probability ...
April 15, 2014

statistics
A standardized third grade reading test, called the We Can Read Test, has a mean of 50 with a standard deviation of 10. A developmental psychologist conducts a study, where he assesses the reading ability of a random sample of 75 third graders using the We Can Read Test, and ...
April 15, 2014

math
if a car has decreased in value by 10% and is now worth 22,000.00 how much was the original price
March 31, 2014

Finance
24.34
March 19, 2014

math-Algebra
Anonymous: Your answer is INCORRECT. The correct formula is: k=xy k= 8*10 k=80 y=80/x y=80/6 simplify the fraction to y=40/3. I am a homeschool teacher.
March 11, 2014

English
peace I beleive
March 5, 2014

math
k-3/7k=-6/7 3.5+6.4x=x-3.4
March 5, 2014

Statistics
Assume it is known that the probability of birth is equal in all months. What is the probability that in the STAT class of 120 students, exactly 20 students have their birthdays in either August or September? Solve using (i) the exact Binomial distribution, (ii) the Normal ...
February 28, 2014

Math
Assume an annual 6% return and annual compounding if Tara saves $2000 a year for 40 years how much money would she have at the end?
February 14, 2014

algebra based physics
24m/s
February 10, 2014

  1. Pages:
  2. 1
  3. 2
  4. 3
  5. 4
  6. 5
  7. 6
  8. 7
  9. 8
  10. 9
  11. Next>>