Friday
May 6, 2016

# Posts by jean

Total # Posts: 489

chemistry
Consider the equilibrium reaction CO(g)+H2O(g)⇋CO2(g)+H2(g) Determine how each change in the left-hand column will stress the system and in which direction the equilibrium reaction will shift in response.
April 18, 2016

physics
How much effort force would be needed to roll a barrel with a resistance force of 100N up an inclined plane with a height of 2m and an inclined plane of 8m?
January 22, 2016

Statistics
what is the standard deviation for 57,61,57,57,58,57,61
January 10, 2016

precalc
Find the standard form equation for each ellipse described. 1) Major vertices at (0, 3) and (0, -3), minor vertices at (2, 0) and (-2, 0) 2) Major vertices at (7, 0) and (-7, 0), foci at (5, 0) and (-5, 0) 3) Minor vertices at (-2, -3) and (-2, -11), foci at (1, -7) and (-5, -7)
December 8, 2015

Intro to Ecology
Global estimates of denitrification in terrestrial ecosystems vary widely but are of the order 200*102 g/yr, and more than half of that total occurs in wetland ecosystems. If restoration results in an increase in wetland area by approximately 25%, it would be expected that ...
October 20, 2015

math
October 4, 2015

chemistry
4.3 cm would be 1.69 in
October 4, 2015

statistics
A multiple-choice quiz has 15 questions, each with 4 possible answers of which only 1 is the correct answer. What is the probability that a student gets 7 to 11 correct answer?
September 10, 2015

Solid Mensuration
A triangle has a base of 16 inches and an altitude of 8 inches. Find the dimensions of the largest rectangle that can be inscribed in the triangle if the base of the rectangle coincides with the base of the triangle.
August 19, 2015

Calculus
Thank You!!
August 12, 2015

Calculus
The balloon leaves the ground 80 ft. from an observer and rises vertically upward at 5 ft/s. (a) How fast is the balloon receding from the observer after 12 seconds? (b) find the corresponding acceleration? How do I sketch it? and what equation should I use? Please show the ...
August 12, 2015

Calculus
A man 5.5 ft tall walks away from a lamp post 10 ft high at the rate of 8 ft/s. (a) How fast does his shadow lengthen? (b) How fast does the tip of the shadow move? Can you please tell me what method/s you used to come up with a solution? I wasn't sure about the sketch I ...
August 12, 2015

Calculus
why was it multiplied to 10?
August 10, 2015

calculus
find the equation of the curve for which y'''=24x-6 if the curve passes through (-1,8) and is tangent to the line y=4x at (1,4). help please thanks :-)
August 10, 2015

calculus
if the driver of a car wishes to increase his speed from 20 mph to 50 mph while traveling a distance of 528 ft., what constant acceleration should he maintain?
August 10, 2015

calculus
a particle starts from rest and moves along a straight line with an acceleration equal to 24-15√t where distance and time are measured in terms of feet and seconds respectively. with what acceleration will the particle return to the starting point? help please thank you :-)
August 10, 2015

calculus
it's 904 ft. thank you :-)
August 10, 2015

calculus
a stone dropped from a balloon which was rising at the rate of 15 ft./sec. reached the ground in 8 seconds. how high was the balloon when the stone was dropped?
August 10, 2015

calculus
If the driver of a car wishes to increase his speed from 20 mph to 50 mph while traveling a distance of 528 ft., what constant acceleration should he maintain?
August 6, 2015

calculus
a particle starts from rest and moves along a straight line with an acceleration equal to 24-15√t where distance and time are measured in terms of feet and seconds respectively. with what acceleration will the particle return to the starting point?
August 6, 2015

calculus
A stone dropped from a ballon which was rising at the rate of 15 ft./sec. reached the ground in 8 seconds. how high was the ballon when the stone was dropped? please help :-) thank you
August 6, 2015

calculus
August 4, 2015

calculus
a parachutist falling at the rate of 15 ft./sec. drops a stone. if he was 904 ft. above the ground when the stone was dropped, how long would it take the stone to reach the ground?
August 4, 2015

calculus
Thank you very, very much. I'm really grateful.
August 4, 2015

calculus
a = 1/(t√t)
August 4, 2015

calculus
a particle moves according to the law a=1/t √t. if s=8 when t=1. and s=16 when t=4. find v when t=9.
August 4, 2015

SLCS
Paul and Juston are carrying a sack or rice weighing 6.02x10^2 N on a pole between them. If the pole is 2.0 m long and the load is .50m away from Juston,what force should each boy exert to make it equilibrium. Neclect the weight of the pole.
August 2, 2015

Nutrition
:can be converted to vitamin D, the answer is a.
July 19, 2015

Math
Serena is an account executive. She receives a base pay of \$18 an hour plus a 15% bonus for all the sales she generates. Last week she generated \$1,200 worth of business. What is the minimum number of hours she could have worked to make \$500?
June 30, 2015

Pharmacy Tech
ah ok so basically warnings- can cause these symtoms and adverse reactions- things that was observed during clinical trials? that would be the difference?
April 28, 2015

Pharmacy Tech
20.) To find out if a drug causes nausea, you would look in this section of the drug monograph. a) adverse reactions b) contraindications c) how supplied d) warnings I am leaning towards a but not sure..I could also think it could be d as well...am confused and i keep ...
April 28, 2015

physics
a gun converts 200J of stored energy into kinetic energy of the 0.02kg bullet. What is the speed of the bullet as it leaves the gun? If the gun is fired straight up, how high will the bullet go?
April 23, 2015

Physics
60mph converts into 26.82m/s, a= (0-26.82 m/s) -26.82 m/s but don't understand how to get answer in Newtons which are kg m/s^2
April 23, 2015

math
solve: 2x + 5 = 3x - 9
April 4, 2015

Trig
How do you derive this identity? Cos(t)=1-sin^2(t/2)
March 11, 2015

Persuasive Essay
Should violent video games be prohibited from sale?
October 18, 2014

calculus
Use iterated integral to find the area enclosed by r=2sin2(theta). How do i graph this?
October 15, 2014

calculus
Z=square root of(x^2+y^2) + xy Find the partial derivatives: x, xx, y, yy, xy. Thanks.
September 24, 2014

math
The domain and range of ln(4-x-y). Thanks.
September 24, 2014

math
Z=square root of (x^2+y^2) + xy Find the partial derivatives: x, xx, y, yy, xy. Thanks.
September 24, 2014

math
But why wouldnt the answer be just xe^y cos(xy)? if the partial derivative with respect to x is just ye^y cos(xy).
September 23, 2014

math
The partial derivative with respect to y for z=e^y sin(xy) is: zy= xe^y cos(xy) + e^y sin(xy) How do i get to this answer? Thanks.
September 23, 2014

math
Find the rectangle with the maximum area inside the ellipse x^2/16 + y^2/4=1. Thanks.
September 21, 2014

physics
If a 2kg car with a momentum of 12kg m/s collides with a stationary 4kg car, the total momentum after the collision will be?
September 18, 2014

Statistics – Lab Week 2
Thanks for the help...
September 12, 2014

Statistics ¨C Lab Week 2
The corelation coefficient is: r=0.9982 Step 1: Find X⋅Y, X^ 2 and Y ^2 as it was done in the table below. X Y X⋅Y X⋅X Y⋅Y 67.273 69.78 4694.30994 4525.656529 4869.2484 0.764 1.40 1.0696 0.583696 1.96 2.533 4.21 10.66393 6.416089 17.7241 63.000 61.00 ...
September 12, 2014

Statistics – Lab Week 2
11. Using the empirical rule, 68% of male heights should be between what two values? Either show work or explain how your answer was calculated.
September 12, 2014

Algebra
x(a+b+2) (x+3)(a+b)
September 12, 2014

equations
Exact result: 3N/16 = 24
September 12, 2014

Algebra
Solution for the variable b b=a
September 12, 2014

Science
September 11, 2014

physics
The vertical acceleration of a projectile A)equals g pointing sometimes upwards and other times downwards. B)equals g pointing upwards C)is zero. D)equals g pointing downwards E)continuously increases. Thanks!
September 11, 2014

physics
Thanks!
September 3, 2014

physics
A child, who is 45 m from the bank of a river is being carried downstream by the river's swift current of 1.0 m/s. As the child passes a lifeguard on the river's bank, the lifeguard starts swimming in a straight line until she reaches the child at a point downstream. ...
September 3, 2014

Math
If a hallway is 90 feet long & 7 feet wide and it takes 1/2 ounce of cleaning solution to clean 1 square foot, how much cleaning solution is needed to clean the hallway?
July 10, 2014

physics
croquet ball must have a set mass of 0.50 kg. a red ball moving at 10.0 m/s, strikes an at-rest green ball head on. The red ball continues moving at 1.5 m/s after it hits the green ball. What is the final speed of the green ball?
May 15, 2014

Milford DE
#6 Plot Story map for the other wife
March 26, 2014

Visual Basic
Write a statement that assigns the length of an array named strAddressBook to a variable named intAddressCount.
March 5, 2014

Computers
Write a statement that assigns the length of an array named strAddressBook to a variable named intAddressCount.
March 5, 2014

chemistry
very hot sinc will react with steam to form zinc oxide and hydrogen. If 5.4 liters of hydrogen was used to use up 20 g of zinc completely. What is the percent yield of this process
February 12, 2014

20th century Europe
The European dominance was replaced by what is also known as the globalization?
February 1, 2014

20th century Europe
to describe the international events and the economic, intellectual and cultural developments in the twentiet-first century
February 1, 2014

20th century Europe
The 20th century European dominance was replaced by what?
February 1, 2014

american government
the professional qualification model in the selection of judges holds that
January 12, 2014

Science >.<
if a wave is traveling at 60cm/second and has a wavelength of 15cm,what is the frequency
October 31, 2013

Using the price per dinner that you determined in the previous question, calculate the following. If Epicure offers a \$1-off coupon in a newspaper advertisement, what markdown percent does the coupon represent? (Round percent to the nearest tenth.)
September 13, 2013

Physics
A rock is ejected vertically upward at 40 m/s. At what time is the rock moving at 20 m/s upward.
July 1, 2013

algebra
Question Four x - 7y = 15 -3x + 21y = - 45
May 29, 2013

economics
Bob and his dad visited the hardware store on Saturday. They observed the following transactions: Mr. Harris bought 4 for 0.50, Mrs. Clarke bought 21 for \$1.00, Mr. Montaro bought 1,134 for \$2.00 and Ms. Park bought 450 for \$1.50 What were they buying?
May 19, 2013

American National government
According to the trustee model of representation, members of Congress must do what
May 5, 2013

math
find the value of x in the equation 6x +4(70-x)=300
April 4, 2013

Intro to Logic
10. A strongly supported claim in science should be regarded as
March 30, 2013

math
simplifying expressions
February 23, 2013

macro-economics
1.In an attempt to curb the problem of unemployment and win the forthcoming elections the government of the republic of zambia has decided to hire unemployed workers who had previously been receiving unemployment benefits as government employees and will now pay them to do ...
February 13, 2013

political science
February 5, 2013

science
What is science
January 27, 2013

chemistry
balance net Ionic solution AgNo3 + NaOH
January 25, 2013

political science
is politics an art or a science? give proper reasons for chosen side.(its an essay)
January 17, 2013

political science
what are the argument for and against politics being a science
January 16, 2013

political science
Is politics a science or not? Give a reasons for answer
January 15, 2013

economics
John has a job that requires him to travel 3 of every 4 weeks. He has an annual budget and can travel either by train or by plaine. The airline on which he typically flies has a frequent traveler programme that reduces the cost of his tickets according to the number of milels ...
January 2, 2013

economics
John has a job that requires him to travel 3 of every 4 weeks. He has an annual budget and can travel either by train or by plaine. The airline on which he typically flies has a frequent traveler programme that reduces the cost of his tickets according to the number of milels ...
January 2, 2013

Being inventory of 12 sets of paints at a cost of \$1.50 each. During the year the store purchased 4 sets at \$1.60, 6 sets at \$2.20, 6 sets at \$2.50, and 10 sets at \$3.00. By the end of the year, 25 sets were sold. Caculate the number of paint sets in stock and the cost of ...
December 26, 2012

Lee Corp. purchased 10 key chains on January 1, 2010 for \$9.00 each and 5 key chains were purchased on December 1, 2010 for \$10.00. Seven were sold. What would be the inventory amount for LIFO, what would be the inventory amount for FIFO
December 26, 2012

Assume you lease a \$45,000 BMW. Using a straight- line method with a 3- year ueful life and is a \$16, 675 residual value, what is the book value of the BMW after the first year?
December 20, 2012

Jim Clinnin purchased a used RV with 19,000 miles for \$46,000. Originally the RV sold for \$70,000 with a residual value of \$20,000. After subtracting the residual value, depreciation allowance per mile was \$.86. How much was Jim's purchase price over or below the book value?
December 20, 2012

Jim Company bought a machine for \$36,000with an estimated lofe of 5 years. The residual value of the machine is \$6,000 Calculate (a) the annual depreciation and (b) the book value at the end of year 3. Assume straight-line depreciation
December 20, 2012

From the following facts, complete a depreciation schedule using thee straight - line cost of Highlander- \$30,000 residual value- \$6,000 estimated life- 8 years
December 20, 2012

A usefful personal and business investment site with in-depth detail on personal financial planning. After reading a March 19,2009 , article"Preparing a Portfolio for Retirement," Arlene Supple, 47 years old, is evaluating her retirement portifolio. She paid her ...
December 9, 2012

math
a computer store sold a total of 300 items last month. the store sold six times as amny hard drives as they did CD-ROM drives, andhalf as many floppy drives as hard drives. based on this information, how many of each items were sold
December 9, 2012

math
103/5
December 8, 2012

math
10 12/15
December 8, 2012

math
subtract the fraction 74/5 from the fraction 18 6/15 and reduce your answer to the lowest terms.
December 8, 2012

math
December 8, 2012

math
a lumberyard makes picnic tables for \$87.00 and sells them for \$127.89. what is the percent markupbon each picnic table based on cost?
December 8, 2012

math
convert 5/8 to a decimal
December 8, 2012

math
convert 5/8 to a decimal
December 8, 2012