Saturday
October 22, 2016

Posts by Tanya

Total # Posts: 313

physics
an elevator motor provides 45 W of power while lifting a 2000 kg elevator 35 m. if the elevator contains six passengers of the same mass and it takes 20.0 to accomplish this task, determine pass of each passenger.
January 12, 2013

american government
Which of the following is characteristic of a capitalist economic system? a. free enterprise b.self-reliance c.private property d.individualism e.all of the answers are correct
December 30, 2012

language arts
“In the snow” is repeated three times in “Scott’s Goodbye.” What meaning might the writer have hoped to convey by repeating this phrase?
December 17, 2012

Calculus!
A 16 ft. ladder leans against a wall, with the top being 12 ft. from the wall when time t=0. The top is sliding down at a constant rate of 4 ft./second. Given that the top of the ladder touches the ground at 3 seconds, what is the velocity of the bottom of the ladder when t=3?
November 23, 2012

MATH,statistics
At a recent scotch-tasting party, 20 faculty members and their (opposite sex) spouses were guzzling it back pretty well. One person quite correctly noticed that the women seemed to be drinking more than the men. If the mean number of drinks had by the men was 5, and that for ...
November 2, 2012

A ladder is 30 feet tall it is 5 times taller then Mr. Jones How tall is Mr. Jones
October 24, 2012

statistics
If other factors are held constant, how does increasing the number of scores in each sample affect the value of the independent measures t statistic and the likelihood of rejecting the null hypothesis?
October 21, 2012

U.S History
C,B,C,D,C,B,A,A,B,C,D,A,C,C,A this is for 1-15
October 17, 2012

Physics
if you were on a 22.7 degree slope and an avalanche started 425 m up the slope, how much time would you have to get out of the way, there is no friction.
October 15, 2012

physics
A box of books weighing 324 N is shoved across the floor by a force of 527 N exerted downward at an angle of 35 below the hori- zontal. The acceleration of gravity is 9.81 m/s2 . If μk between the box and the floor is 0.59, how long does it take to move the box 4.35 ...
October 15, 2012

Math,statistics
The sum of 16 reciprocals (1 over the number) is found to equal 4. What is the harmonic mean of the original (i.e., non-reciprocated) scores?
October 9, 2012

Math,statistics
The sum of 16 reciprocals (1 over the number) is found to equal 4. What is the harmonic mean of the original (i.e., non-reciprocated) scores?
October 9, 2012

Physics
On a playground slide, a child has potential energy that decreases by 1000 \rm J while her kinetic energy increases by 900 \rm J. What other form of energy is involved, and how much?
September 28, 2012

Math
The perimeter of a square is f feet. How long in yards is each side of the square?
September 26, 2012

Math
A number that can be divided by 2 three times in a row with no remainder, has 5 as a factor and is greater than 40
September 25, 2012

Psychology
Where are selfish impulses? Examples of social conscience?
September 13, 2012

physics
In the design of a supermarket, there are to be several ramps connecting different parts of the store. Customers will have to push grocery carts up the ramps. A grocery cart has a mass of 30kg. The coefficient of friction is .10. Assume that the shoppers will push the cart ...
September 11, 2012

Math
x is to 6 as 0.8 is to 1.5 How do I write a proportion with that? (proportion such as eg. 14/105=x/315) is it x/6=0.8/1.5 or is it x/0.8=6/1.5 Urgent!!
September 11, 2012

7th G-Math
a is the answer -9/-3 is 3 any negative divided by another negative is always a positive the -9+(-3) so it is -9-3 -9-3=-12
September 11, 2012

math
the value is 46 any thing in side the absolute values sign (| |) turns postive
September 10, 2012

math
y – (–19) = 25 negative and negative is positive y+19=25 now you want to get y all alone and anything flipped to the other side of the equals sign changes. so positive numbers turn negative as negative turn positive y=25-19 y=6 thats your answer!
September 10, 2012

0.33 is more. The less numbers a decimal has the more it is and then and the smaller the decimal, the larger.
September 4, 2012

13/16-1/4 you need to change 4 into 16. 4*4 is 16 so now it is 13/16-4/16 13-4=9 so it is 9/16
September 4, 2012

Essay
The best birthday party we ever celebrated
June 30, 2012

statistics
Breast feeding sometimes results in a temporary loss of bone mass as calcium is depleted in the mother's body to provide for milk production. An investigation gave the following data on total body bone mineral content (g) for a sample of mothers both during breast feeding...
June 28, 2012

6th Geography
Correct
May 9, 2012

Algebra
x2 - 5x + 5 = 0
April 29, 2012

statistics
The ages of commercial aircraft are normally distributed with a mean of 13.0 years and a standard deviation of 7.5 years what percentage of individual aircraft have ages greater than 15 years assume that a random sample of 49 aircraft is selected and the mean age of the sample...
April 24, 2012

math
The demand function for a certain commodity is approximated by: p = 100e-q/2where "q" is the number of units demanded at a price of "p" dollars per unit. If there is no demand for the product, what will its price be(in dollars)?
April 3, 2012

math
Find the solution of the given system by the method of addition that was used in Examples 4 and 5. If there is no solution or infinitely many solutions, state so. Put the value for x in the blank. 2x - 3y = 1; x + 2y = 4
April 3, 2012

Chemistry
Exactly 100 mL of 0.14 M nitrous acid (HNO2) are titrated with a 0.14 M NaOH solution. Calculate the pH for the following. (a) the initial solution (b) the point at which 80 mL of the base has been added (c) the equivalence point (d) the point at which 105 mL of the base has ...
March 17, 2012

Chemistry
Calculate whether or not a precipitate will form if 1.30 mL of 0.80 M NH3 are added to 2.2 L of 1.0 10-3 M FeSO4. Calculate Q.
March 16, 2012

math
solve and check each of the following quadratic equation (1)x^2+16x=36 (2)x^2=10x-16 (3)3x=x^2-4
February 16, 2012

help math
solve each of the following quadratic equation (1)x^2=5x+6 (2)x^2+9x=10
February 15, 2012

help in math
solve and check each of the following quadratic equation (1) x^2=6x (2) x^2=3x (3)x^2=17x (4) x^2=5x+6 (5) x^2+9x=10
February 15, 2012

solve and check each of the following quadratic equation (1)x^-9x=0 (2)x^+8x=0 (3)x^=6x (4)x^=-3x
February 15, 2012

solve and check each of the following quadratic equation (1)x^+x-6=0 (2)x^+8x+15=0 (3)x^+2x+1=0 (4)x^-3x-4=0 (5)x^-4x-32=0
February 15, 2012

math
wats the positive root of the equation x^-3x=10?
February 15, 2012

chemistry
how many grams of hydrogen are produced if you have 120 grams of sodium? 2Na+2H2O->2NaOH+H2
February 13, 2012

Algebra 1
not enough mathematical equation to answer your question but u can solve it by using a graph.....
February 8, 2012

what's the positive root of the following equation x(square)=7x+8
February 8, 2012

solving algebraic equation
a movie theater charges $9 for an adults ticket and$5.00 for a child ticket. on a recent night the sale of child's tickets was two times the sale of an adults tickets. if the total amount collected for ticket sales was not more than $3800 what is the greatest number of ... February 8, 2012 solving algebraic equation For college orientation week,Mike sold 200 shirts.sweat shirts were priced at$50.00 each ant t-shirts at $20.00 each Mike receive a total of$6250.00 for the shirts. How many type of shirt dud Mike sell for college orientation week ?please help and show a equation to solve
February 8, 2012

algebraic equation and inaqualities
in a triangle XYZ,the measure of angle Y is 40 more than the measure of angle X.the measure of angle Z is 10 less than three times the measure of angle X.find the measure of angle X
February 6, 2012

algebra
the sum of two adjacent angle is 80°the larger angle is 8°less than 3 tines the smaller find the number of degrees in each angle
February 5, 2012

algebra verbal linear equation
Allison has a square root flower garden and Lauren has a rectangular flower garden the width of the rectangular garden is 2 yards less than a side of the squaare garden and the length of the rectangular garden is 5 yards more than a side of the square garden if the sum of the ...
February 5, 2012

maths
Christopher has cut three pieces of string to three kites.two pieces are equal length. rhw third pieces is one half of the lenght of each of the others. he cut out the three pieces from a roll of string 70 meters long without any String left over.Find the number of meters of ...
February 5, 2012

verbal linear equations
a taxi costs $2.75 for the first quarter of a mile and$0.85 for each subsequent quarter mile.A ride that cost $23.15 is how many miles longer than a ride that costs$17.20?(please i don't want example show me how u work it out )
February 5, 2012

Physics
here's the first part: deltaV=4.67μC/m2*(d/8.85E-12) and it should be somewhere over 1000 volts. good luck with the second part, I still don't know it.
February 1, 2012

algebra
3a+5b=4 4a+3b=2 find a and b please
January 31, 2012

algebra
find x and y 5x-3y=-4 3x+2y=9
January 31, 2012

January 26, 2012

High Point
a sign is in the shape of rhombus with a 60 degree angle and sides of 9cm long. Find its are to nearest tenth?
January 24, 2012

Chemistry :/
A 10.231-g sample of window cleaner containing ammonia was diluted with 39.466 mL of 0.1063 M HCl to reach the bromocresol green end point. Find the weight percent of NH3 (FM 17.031) in the cleaner.
January 23, 2012

History
what were the roman laws called that applied to all citizens in the roman empire
January 7, 2012

Auto parts dept. sends out a mean of 6.3 special orders daily. What is the probability that, for any day, the number of special orders sent out will be at least 4?
December 19, 2011

physics
A 2.5 kg mass weighs 23.75 N on the surface of a planet similar to Earth. The radius of this planet is roughly 7.7 × 10 6 m.Calculate the mass of of this planet. The value of the universal gravitational constant is 6.67259 × 10−11N · m2/kg2
December 11, 2011

physics
In introductory physics laboratories, a typical Cavendish balance for measuring the gravitational constant G uses lead spheres of masses 1.79 kg and 16.9 g whose centers are separated by 5.49 cm. Calculate the gravitational force between these spheres, treating each as a point...
December 10, 2011

physics
A satellite moves in a circular orbit around the Earth at a speed of 6.1 km/s. Determine the satellite’s altitude above the surface of the Earth. Assume the Earth is a homogeneous sphere of radius 6370 km and mass 5.98 × 10 24 kg. The value of the universal ...
December 10, 2011

physics
A 2.5 kg mass weighs 23.75 N on the surface of a planet similar to Earth. The radius of this planet is roughly 7.7 × 10^6 m. Calculate the mass of of this planet. The value of the universal gravitational constant is 6.67259 × 10^−11N · m2/kg2. Answer ...
December 10, 2011

physics
A model airplane of mass 0.7 kg is attached to a horizontal string and ﬂies in a horizontal circle of radius 5.6 m, making 1.6 revolutions every 7 s. (The weight of the plane is balanced by the upward “lift” force of the air on the wings of the plane.) The ...
December 10, 2011

physics
An air puck of mass 0.33 kg is tied to a string and allowed to revolve in a circle of radius 1.12 m on a horizontal, frictionless table. The other end of the string passes through a hole in the center of the table and a mass of 1.1 kg is tied to it. The suspended mass remains ...
December 10, 2011

Chemistry
What is the value of Kp for the reaction: NO2(g)+CO(g)->NO(g)+CO2(g) Given the following information: 2NO2(g)->NO3(g)+NO(g) Kp=2.72x10^(-4) 2NO2(g)+2CO2(g)->2NO3(g)+2CO(g) Kp=5.73
November 27, 2011

Math
Got it. 4/5 is the answer. I'm making this probability problems harder than it should be. Thanks!
November 19, 2011

Math
I need help with the second question: A student is taking a multiple choice exam. There are five possible answers for each question. What is the probability the student will answer the first question correctly? Answer is 1/5 What is the probability that the student will answer...
November 19, 2011

Math
I'm not sure of the second question. I understand the 1/5 chance of answering correctly but I'm not sure of the probability of answering incorrectly. Would it be 1 - 1/5?
November 19, 2011

Math
A student is taking a multiple choice exam. There are five possible answers for each question. What is the probability the student will answer the first question correctly? What is the probability that the student will answer the first question incorrectly?
November 19, 2011

statistics
A student is taking a multiple choice exam. There are five possible answers for each question. What is the probability the student will answer the first question correctly? What is the probability that the student will answer the first question incorrectly?
November 19, 2011

Math
A car dealer carries out the following calculations. What is the annual percentage rate? (Round your answer to the nearest tenth.) List price $5,368.00 Options$ 1,625.00 Destination charges $200.00 Subtotal$ 7,193.00 Tax $431.58 Less trade-in$ 2,932.00 Amount to be ...
November 2, 2011

GEOGRAPHY
According to the estimate in 2001 which country ranks first in population then second then third?
November 1, 2011

American History
Which is most accurate regarding the American political climate between 1876 and 1896?
October 29, 2011

English
Based on what you know about him so far, describe Jim. What kind of a man is he? Why is he the kind of man he is?
October 25, 2011

English
Describe the role that Huck’s conscience plays in the first half of Twain’s novel.
October 25, 2011

english
How does the issue of slavery become a concern in Huck's life? How does Huck deal with this controversial issue?
October 25, 2011

english
How does Huck display imagination, intelligence, creativity, and a sense of humor in the first half of Twain’s novel?
October 25, 2011

English
Identify and describe Huck’s opinions of “sivilization,” education, and religion.
October 25, 2011

cja 105
Chief Draper has noticed that the behavior of many of his officers reflects a lack of understanding of many basic criminal justice concepts. Last week, he received a complaint about a patrol officer with ten years of experience on the force. The complaint alleged that the ...
October 10, 2011

spanish
do anyone have the answer for penn foster exam 38981200 part 4 comprehension
September 26, 2011

spanish
do anyone have the answer for penn foster exam 38981200
September 26, 2011

physics
a cylinder of diameter 1cm at 30degree celcius is to slid into a hole on a steel plate. the hole has a diameter of 0.9997 cm at 30 degree celcius. to what temperature must be the plate be heated when steel has the alpha 1.1X10^-5/degree celcius
September 2, 2011

Literacy 2
where would you check the definition in the book.
August 23, 2011

Finance
a corporation had year end 2004 and 2005 retained earnings balances of $320,000 and$400,000, respectively. The firm reported net profits after taxes of $100,000 in 2005. the firm paid dividends in 2005 ofwhat August 11, 2011 statistics (714+751+664+789+818+779+698+836+753+834+693+802)/12 = 760.97 Answer: No, 760.97 does not equal to 678 Add all numbers then devide by the number of the above numbers (we have 12 in total) and that will give you a mean. August 7, 2011 Math write the logarithmic equation in exponential form log0.001=-3 August 4, 2011 General Education Statistics | MAT112 There are many ways people can invest their money. In mutual funds, the investor buys shares in a fund that buys investment instruments for the investor, commonly stocks, bonds, or fixed instrument investments. Investment fund managers commonly advertise their success in ... July 30, 2011 averages if you had the nos 3,19,20,37,48 out of 50 on another draw what. Would the results of another draw be June 11, 2011 math Trying to solve the number 91 how 1,3,4,6 can be used once using add,sub,mult,divide and symbols April 22, 2011 Chemistry How do I find the pH of pure neutral H2O at o degrees celsius by using standard enthalpies and standard entropies April 21, 2011 soc 110 a. In urban areas across our country, identify at least three technologies that Americans have become dependent upon in their daily lives. b. Using the technologies that you described in (a), discuss at least one advantage and one disadvantage that people in large cities ... April 15, 2011 Finance What is a significant disadvantage of the payback period? a. does not properly consider the time value of money, b. Is complicated to explain, c. Increase firm risk, or d.Provides a measure if liquidity. March 24, 2011 Spanish spanish exam 38981200 comprehension March 23, 2011 computer programming Design a program that asks the user to enter a nonegative integer and then display the factorial of that number- it can be a flowchart or pseucode March 18, 2011 PHYSICS Two objects are connected by a massless string as shown in the figure below. The pulley is massless and rotates without friction. The object of mass m = 1.7 kg slides without friction on an inclined plane which makes an angle of è = 38° with the horizontal. The ... March 17, 2011 PHYSICS A proton is traveling to the right at 231 km/s. It has a head-on perfectly elastic collision with a carbon atom. The mass of the carbon atom is 12 times the mass of the proton, what is the speed of proton after the collision? March 17, 2011 math Two events are _________ if the outcome or occurrence of the first affects the outcome or occurrence of the second so that the probability is changed. Please Help Me . ! March 8, 2011 Business Which economic system is the best solution for handling a crisis of epic proportion? March 6, 2011 College Math 3 Lisa will rent a car for the weekend. She can choose one of two plans. The first plan has an initial fee of$53.98 and costs an additional $0.15 per mile driven. The second plan has an initial fee of$67.98 and costs an additional \$0.10 per mile driven. How many miles would ...
March 4, 2011

What is strengths and weaknesses regarding monetary polcies, and how is related to treasury bill and note rates?
March 2, 2011

As regards to federal reserve what is the success in the cost and availability of credit today? and what could be handled differently?
March 2, 2011

computers
What are contributing factors if you were in the market for commercial paper prior to a final purchase?
February 24, 2011

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