Wednesday
October 22, 2014

Posts by keith


Total # Posts: 177

Basic Statistics
The Suva Energy Information Administration reported that 51.7% of homes in Sunnyville were heated by natural gas. A random sample of 200 homes found that 115 were heated by natural gas. Does the evidence supports the claim, or has the percentage changed? (Use a P-value method).
October 15, 2014

Statistics
A rental agency claims that the average rent that small-business establishments pay in Suvacity is $800. A sample of 10 establishments shows an average rate of $863. The standard deviation of the sample is $20. At α = 0.05,is there enough evidence to reject the agencies ...
October 15, 2014

math
Marianne buys 16 bags of potting soil that comes in 5/8 pound bags a.how many pounds of potting soil does she buy? b. if her father calls and says he needs 13 pounds of potting soil, how many additional bags should she buy?
September 22, 2014

KIPP Believe
The student-to-faculty ratio at a small college is 17:3. The total of students and faculty is 740. How many faculty members are there at the college? How many student?
September 1, 2014

Math
A car dealership employs 12 salesman and 28 mechanics. What is the ratio of salesman to mechanics?
August 12, 2014

math
Aislyn decides to research attendance at sporting events for her project. She finds data on average attendance per game at San Diego Chargers (CA) football games and at Dallas Cowboy (TX) football games. The table shows the average attendance for each team for the 2000 season ...
May 27, 2014

english
ugh i will just go elsewhere
May 12, 2014

english
I do not have a clue what it is cause it has been a long time sense I have read this book. Can you please help me?
May 12, 2014

english
17. In Shirley Jackson’s “The Lottery,” how does the author use Tessie’s late arrival to help create suspense? (1 point) A The reader does not know what event Tessie has arrived late for. B The reader knows that the townspeople are aware of Tessie's ...
May 12, 2014

English
no
May 12, 2014

English
16. What is the effect of the author’s use of assonance in the following line from “The Raven?” “For the rare and radiant maiden whom the angels name Lenore—” (1 point) A It creates emphasis on Lenore. B It explains Lenore’s appearance. C It ...
May 12, 2014

English
Thx
May 12, 2014

English
12. What does the following quote reveal about Montressor’s intentions? "'Pass your hand,’ I said, ‘over the wall; you cannot help feeling the nitre. Indeed it is very damp. Once more let me implore you to return. No? Then I must positively leave you. ...
May 12, 2014

Liberty
What is the sample Z score to reject the null hypothesis if the cut off Z score +-2.31?
February 21, 2014

statistics
A population is normally distributed with mean 30, population SD =10, Sample size 25. What are the mean and variance of the distribution of means, respectively?
February 20, 2014

Math
Samantha swam 30 meters to a boat in 16 seconds. How long did it take her to swim each meter? I worked it out this way 8/15 x 30 = 240/15 240 divided bt 15 = 16 seconds my teacher said I was wrong and said the answer was 30/16????
January 18, 2014

Math
Samantha swam 30 meters to a boat in 16 seconds. How long did it take her to swim each meter? How would I work this out? Thank You
January 18, 2014

physics
A 0.40 kg mass is attached to a spring with force constant 26 N/m and released from rest at a distance of 3.2 cm from the equilibrium position Use conservation of energy to find the speed of the spring when it is halfway to the equilibrium position Find the maximum speed of ...
November 21, 2013

Accounting
1.More specifically, in the third and fourth quarter of 2000, at the direction and with the knowledge of WorldCom’s senior management, Vinson Normand and others, by making and causing to be made entries in WorldCom’s books which improperly decreased certain revenues ...
October 5, 2013

math
the price of a fax machine is marked down from $305 to $262.30. what is the rate of discount
October 3, 2013

History
1. Marco Polo wrote an account of the marvels of (1 point) the Americas Venice Asia *** Spain 2. Which man and his army conquered Peru? (1 point) Francisco Pizarro *** Atahualpa Hernan Cortes Montezuma 3. Traders who established rights to the Canadian fur trade were (1 point) ...
September 20, 2013

Science
the answers that have *** over them are correct?
September 12, 2013

Science
question 4 is inference
September 11, 2013

maths
A die is thrown twice. Find the probability that the number obtained in the first throw is smaller than that in the second throw.
August 30, 2013

maths
A group of y numbers has mean x. If the numbers 3 and 5 are removed from the group, the mean of remaining(y-2) numbers remains unchanged. Find x.
August 30, 2013

Finite Math
True or false. [A ¿ (B ¾ C)]c = (A ¿ B)c ¿ (A ¿ C)c
August 3, 2013

Finite Math
True or false. P (n, r) = r! C (n, r). explain why please, thanks
August 3, 2013

english
D secondary research
August 2, 2013

Computers C++
1). After the assignment statement result = isspace('\t'); result has the value ________. 2). The data type of islower('g') is ________. 3). What will be output given the following information: float * pointer; float pay = 3.75; pointer = &pay; cout << &...
July 14, 2013

math
if i have a mix of 4oz. to 100lbs. how much would it be for 9Lbs.
April 13, 2013

math
2(n+3}<-4
January 31, 2013

chemistry
RANK THESE COMPOUNDS BY THE LENGTH OF THE CARBON-CARBON BOND
January 14, 2013

Trigonometry
rectangular form to polar form xy=12 rsinÆŸ rcosÆŸ=12 would the answer be: r^2=12/cosÆŸ sinÆŸ please show steps, Thanks
December 19, 2012

math
9/20 how do I multiply & simplity
October 24, 2012

algebra
(1) T in terms of A is alike to Y in terms of X for linear graphs, so set it up the same way. T = (something)A + constant The constant reading is 200 miles per hour so that is your constant. T = (something)A + 200 The true airspeed is increasing by 2% or .02 of the indicated ...
September 26, 2012

Math
Use all ten digits from 0 to 9 only once. Do not use 0 in either the milions or thousandths places. What is the greatest number less than 5 million?
September 17, 2012

math
Alternate exterior angles are always ?
July 10, 2012

algebra
a – 6 = 2b a + b = 15
July 8, 2012

algebra
Solve by setting up the proper equation to describe the facts given and then carrying out the mathematical calculations to solve for the unknown variable(s). The sum of two numbers is 36. Their difference is 4. Determine the two unknown numbers.
July 7, 2012

pre algebra
solve whether the sequence is arithmetic or geometric if it is arithmetic or geometric,state the common difference or common ratio and write the next three terms of the sequence 10,18,26,34
May 3, 2012

Probability
6 sided die is rolled 8 times, how many sequence of rolles are there?
April 24, 2012

AP Chemsitry
A solution of an unknown monoprotic weak acid was titrated with 0.100 M NaOH. The equivalence point was reached when 37.48 ML of base had been added. From a second buret, exactly 18.74 of 0.100 M HCl were added to the titration solution. The pH was then measured with a pH ...
April 1, 2012

physics
A turntable must spin at 33.7 rpm (3.53 rad/s) to play an old-fashioned vinyl record. How much torque must the motor deliver if the turntable is to reach its final angular speed in 1.5 revolutions, starting from rest? The turntable is a uniform disk of diameter 30.5 cm and ...
March 17, 2012

physics
A spinning flywheel has rotational inertia I = 401.9 kg · m2. Its angular velocity decreases from 20.5 rad/s to zero in 257.1 s due to friction. What is the frictional torque acting?
March 17, 2012

physics
You are asked to hang a uniform beam and sign using a cable that has a breaking strength of 372 N. The store owner desires that it hang out over the sidewalk as shown. The sign has a weight of 248 N and the beam's weight is 49 N. The beam's length is 1.30 m and the ...
March 17, 2012

Physics
A house painter stands 3 m above the ground on a 5.3-m-long ladder that leans against the wall at a point 4.7 m above the ground. The painter weighs 638 N and the ladder weighs 143 N. Assuming no friction between the house and the upper end of the ladder, find the force of ...
March 17, 2012

chemistry
you are given an unknown gaseous binary compound. when 10.0g of the compound isburned in excess oxygen, 16.3g of water is produced. the compound has a density 1.38 times that of oxygen gas at the same conditions of temperature and pressure. give a possible identity for the ...
December 8, 2011

chemistry
you are given an unknown gaseous binary compound. when 10.0g of the compound isburned in excess oxygen, 16.3g of water is produced. the compound has 1.38 times that of oxygen gas at the same conditions of temperature and pressure. give a possible identity for the compound.
December 8, 2011

microeconomics
Immigration is a major topic of concern in today’s economy. What are the possible problems and solutions for these concerns? What could happen to the U.S. labor markets if immigration is not controlled?
November 30, 2011

microeconomics
Many factors determine the supply and demand for labor. Identify and explain two factors that would increase or decrease the demand for labor. Identify and explain two factors that would increase or decrease the supply of labor. Use the readings and/or the internet for examples
November 30, 2011

Microeconomics
Answer the following questions based on the graph that represents J.R.'s demand for ribs per week of ribs at Judy's rib shack. a. At the equilibrium price, how many ribs would J.R. be willing to purchase? b. How much is J.R. willing to pay for 20 ribs? c. What is the ...
November 27, 2011

grammer
find italicized test
October 28, 2011

physics
You have four vectors. For each one resolve them into North and east components. Adding the North components. N= 75 + 0 + 125 sin(30) - 150 = - 12.5 m And adding the east components we get E = 0 + 250 + 125 cos(30) + 0 = 358.25 The magnitude of the result is found by ...
October 24, 2011

trig
If S is an element of [ 3pi/2 , 2pi ] what quadrant does the terminating side lie in and evaluate for sine theta
October 21, 2011

Chemistry II
Liquid sodium can be used as a heat transfer fluid. It's vapor pressure is 40.0 torr @ 633 degrees C and 400.0 torr @ 823 degreees C. Calculate it's heat vaporization.
September 5, 2011

Chemistry
Write the balanced net ionic equation. Label species as solids liquids gase aqueous. HNO3(aq) + Ba(OH)2(aq) ---> I don't understand the steps? And how to balance it?
July 24, 2011

College Algebra
Sorry, the question is "A person is 66 inches tall is standing 15 feet away from a streetlight. If the person casts a shadow 84 inches long, how tall is the streetlight?"
June 24, 2011

College Algebra
If a person is 66 inches tall is standing 15 feet away from a streetlight. If the person casts a shadow 84 inches long, how tall is the streetlight?
June 24, 2011

kettering elementary school
what do you do when you have 10 or more ones
May 24, 2011

biology
why is the cell membrane important to people?
May 19, 2011

m-100
Sketch the graph of each linear function. Give the domain and range. (a) f(x) = -2x + 1 (b)f(x) = -3.
May 5, 2011

m-100
write an equation for the srtaight line that satisfies the given conditions. (a) Through (-2,-2); slope -1 (b) Through (4,2); slope 1/2.
May 5, 2011

m-100
find the slope-intercept form of the straight lines,given by the following equations: (a) -4x + 2y =4 (b) 2x = 1-4y
May 5, 2011

math
if a basketball player shoots 50 free throws and makes 23% of them,how many free throws did he make?
April 19, 2011

math
simplify (6x^3-7x^2+3x+9)/(3x+9)
March 23, 2011

science
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
February 12, 2011

geometry
what is the perimeter of trapeziod (-3,3) (-5,0) (2,3) (4,0)
February 8, 2011

math
i solved by factoring like this: 3x^2+5x-12=0 (3x+4)(x-3) -4 +3 x=-4 x=3 now i need to solve by the form x^2=k How do I do that?
February 7, 2011

physics
a car is approaching a traffic light at 25m/s when it turns red. The driver takes 1 second to react and put his foot on the brake pedal, after which the car decelerates at 2m/s^2. find the distance needed for the car to come to stop after the light turns red
January 25, 2011

physics
a girl throws a ball vertically upwards at 5m/s from the roof of a building 20m high how long will it take the ball to reach the ground? and what will its speed be when it strikes the ground
January 25, 2011

Algebra
Sam two student loans totaled $31,000. One of his loans was at 2.8% simple interest and the other at 4.5%. After one year, Sam owed $1024.40 in interest. What was the amount of each loan?
January 13, 2011

physics
The velocity of a diver just before hitting the water is -8.8 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 0.93 s of the dive?
January 12, 2011

physics
The velocity of a diver just before hitting the water is -8.8 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 0.93 s of the dive?
January 12, 2011

government
The President's power to veto congressional legislation and the requirement that Congress confirm the President's nominees to the Supreme Court are both examples of what?
January 6, 2011

calculus
At what values of x does the function f(x)= x(x-4)^4 have a horizontal tangent line?
December 2, 2010

math
At what values of x does the function f(x)= x(x-4)^4 have a horizontal tangent line?
December 2, 2010

algebra
Find two possible numbers that differ by 8 and whose reciprocals differ by 1/6.
December 1, 2010

buisness
ok could you help with the general answer to the questions, the article didnt help out much. Which industries have substantially reduced fixed cost commitments? Do you believe this reduction in costs has substantially impaired the ability of these industries to meet the needs ...
November 18, 2010

buisness
yes i read the article.
November 18, 2010

buisness
Industry downsizing has been a major part of the corporate world, even government agencies are downsizing. GovernmentExecutive website "covers the business of the federal government and its huge departments and agencies - dozens of which dwarf the largest institutions in ...
November 18, 2010

buisness
Throughout the corporate world, businesses are transforming labor into a more flexible (and variable) cost. Among such companies are Hewlett-Packard, General Electric, DuPont, Sun Microsystems, and British Airways. Discuss whether direct labor is a fixed or a variable cost. ...
November 18, 2010

Physics
A skydiver has a terminal velocity of 9.0 m/s. If they have a mass of 98, what is their k value for their air resistance? Use g = 10 m/s/s and do not report units on your answer, they should be N s/m.
November 2, 2010

Physics
A skydiver has an air resistance force of 1193 N and a mass of 94 kg, what is her current acceleration? Take down to be POSITIVE and use g = 10 m/s/s. Please report your units as "m/s/s"
November 2, 2010

2nd grade math
Impossible
November 2, 2010

Physics
A 3.0 kg block is being pulled with a horizontal force of 29.7 N. If the block is accelerating at 3.2 m/s/s, what is the coefficient of kinetic friction between the block and the table?
November 2, 2010

algebra
15000(1+0.07/2)^2*4
September 26, 2010

English
I want to ride. What parts of speech are to ride in this sentence.
September 21, 2010

5th grade
use a flow map to help you figure out the missing number. be sure to use arrows to show the direction of your map, and make sure you have a title. clue 1 i am a multiple of 3 clue 2 i am between the numbers 15 and 36 clue 3 when you add my two numbers together you get th sum ...
August 18, 2010

math
yes
August 18, 2010

math
use a flow map to help you figure out the missing number. be sure to use arrows to show the direction of your map, and make sure you have a title. clue 1 i am a multiple of 3 clue 2 i am between the numbers 15 and 36 clue 3 when you add my two numbers together you get th sum ...
August 18, 2010

geometry
That was my first thought but it seems to easy to be true!!!!
August 17, 2010

geometry
Find the area of a square given that the length of each of its sides is 1/4 the value of its area.
August 17, 2010

CSC 111 Intruduction to Computer Science
What does it imply to pursue a computer science major in the 21st century?
July 8, 2010

mat 101
What would my balance be if I had $100 in a savings account that had a 2% interest rate and I kept the account for a 5 year period, using continuos compounding?
July 6, 2010

mat 101
Equation for a line that passes through (6,26) and has a slope of 3 Equation for a line that passes through the points (5,5) and (10,20) Equation for a line that passes through (9,25) and has a slope of -3. Equation for a line that passes through (1,) and is perpendicular to ...
June 26, 2010

History
What does the treatment of the colonies by their European powers tell you about their views of these colonists and natives?
June 17, 2010

math
No. Unless you use pentagons and octagons in a configuration similar to what is commonly found on a soccer ball
June 9, 2010

Chemistry
Gasohol contains ethanol (C2H4OH)(l), which when burned reacts with oxygen to produce CO2(g) and H2O(g). How much heat is released when 12.5g of ethanol burns? C2H5OH(l) + 3 O2(g) --> 2 CO2(g) + 3H2O(l) Delta H = -1368kJ
May 19, 2010

pre calc
solve following using "elimination method" 3x^2 + 4y = 17 2x^2 + 5y = 12
May 19, 2010

Pre Calc
Thanks
May 18, 2010

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