Thursday
May 7, 2015

Posts by leah

Total # Posts: 409

Math
Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 1. Jova walks quickly for 25 minutes then she rests for 5 minutes before continuing on for another 10 minutes. (NOT A LINEAR FUNCTION) 2 A rock that is ...
October 30, 2013

pritchett
what does D.A.R mean in S.S need to know ASAP
October 21, 2013

English
Which Anology would go best with this one? Pond:lake:: A. man:child B. water:sream C. lake:sea D. dusk:night
October 13, 2013

English
Which analogy would best go with this one? branch:tree:: A. flower:garden B. teo:three C. tentacle:octopus D. near:far
October 13, 2013

math
Sally and Marta had the same number of postcards. After Sally sold 18 of her postcards, Marta had 4 times as many postcards as Sally. How many postcards did each girl have to begin with?
October 1, 2013

Math
How would you solve this word problem in one variable inequality form? One cell phone company offers a plan that costs \$29.99 and includes unlimited night and weekend minutes. Another company offers a plan that costs \$19.99 and charges 35 cents per minute during nights ...
September 25, 2013

accounting
A recent cash budget showed estimated cash receipts of \$159,000, estimated cash disbursements of \$155,000, and a desired ending cash balance of \$6,000, with no borrowing of funds. The beginning cash balance was:
September 19, 2013

Math
How much is \$20,000 compounded annually at 6% for 35 years? Thank you. Please show solution
August 2, 2013

Math-Hooke's law
Using Hooke's Law (F=kx) determine: A) A weight of 5 pounds stretches a certain spring from its natural length of 10.2 inches to a length of 10.5 inches. Find K. B) What weight will stretch the spring in part (A) to a length of 13.2 inches? Thank you!
July 16, 2013

Statistics
There were two independent groups who took a school course by different modes. The first sample of students took the course in the online and the second sample took the course in the conventional face to face mode. Using the sample data determine if there is significant ...
June 22, 2013

Physics
Suppose the block is released from rest with the spring compressed 5.50 cm. The mass of the block is 1.60 kg and the force constant of the spring is 965 N/m . Assume the surface is frictionless. A) What is the speed of the block when the spring expands to a compression of only...
May 26, 2013

D/dt
Thank you for the equation and the useful article. :) So this is what I get. f(t) dt= 2(0)- [sqrt(t^2+1) * 2t] f(t) dt= -sqrt(t^2+1) *2t Is this correct? Thank you so much. :-)
May 15, 2013

D/dt
Calculate d/dt when a=t^2, b=2 and sqrt(x+1)dx. My answer turns out to be incorrect despite my checking it several times. I got -2/3t* sqrt(t^2+1) Can someone explain to me what is wrong with my answer and how to go about obtaining it the right way? Thank you everyone. :-)
May 15, 2013

Language Arts
Which sentence below has a missing antecedent? A Many people are planning to attend the race, so we should get to the park early. B My parents are both swimmers, so I know a lot about it. C When Steven and Patrick went to the movies, he bought the tickets. Is it B??
May 2, 2013

LIFE ORIENTATION
identify and describe 3 environmental health hazard that cause ill health within your community and include evidence that is current if the identified issues.use graphs ,statistics, pictures
April 24, 2013

Math
Stuart needed to purchase cleaning supplies for his company. He purchased 15 rolls of paper towels for \$0.65 each, 15 bottles of cleaning solution for \$1.25 each, 4 containers of garbage bags for \$2.45 each and 3 new mops for \$6.98 each. He received a 15% discount using his ...
April 20, 2013

Chemistry
Figured it out, it is 11. :)
April 14, 2013

Chemistry
If the Kb of a weak base is 1.5 × 10^-6, what is the pH of a 0.25 M solution of this base? I found that I need to use the quadratic equation but I'm having difficulties because I come up with taking the square root by zero and that isn't right. Please help! a=1, ...
April 14, 2013

MATH
THE AREA OF A RECTANGUALR GARDEN IS 240 SQ FT. IF THE LENGTH OF THE GARDEN IS 20 FT.,WHAT IS ITS WIDTH?
April 10, 2013

MATH
THE AREA OF A RECTANGUALR GARDEN IS 240 SQ FT. IF THE LENGTH OF THE GARDEN IS 20 FT.,WHAT IS ITS WIDTH?
April 10, 2013

MATH
THE AREA OF A RECTANGUALR GARDEN IS 240 SQ FT. IF THE LENGTH OF THE GARDEN IS 20 FT.,WHAT IS ITS WIDTH?
April 10, 2013

MATH
THE AREA OF A RECTANGUALR GARDEN IS 240 SQ FT. IF THE LENGTH OF THE GARDEN IS 240 FT.,WHAT IS ITS WIDTH?
April 10, 2013

English
ok thank you!
March 19, 2013

English
Please help with this question that has been bothering me! I take bio college class and we have graduate/student assistant for labs & when taking an exam. The professor is never there during those sections.Due to my low exam results,I feel I'm not being graded on fairly ...
March 19, 2013

Trigonometry
Hi, I really need help in understanding how to solve trig equations. How do you solve this equation? Solve the equation on the interval 0 < or equal to x < or equal to 2pi. sinx = (square root of 3)/2 I appreciate your help. Thank you!
March 17, 2013

Physics
You are standing on top of a building that is 75-m high and you throw a 4-kg stone horizontally at a speed of 6.6-m/s. How far from the base of the building will the stone land? (the ground is flat)
March 6, 2013

Chemistry
Need help on a lab results write-up. The lab is the synthesis and analysis of a transition metal complex. General reaction was stated as: Fe(III) + x(acac) -> Fe(acac)x - we were to determine x by completing experiment. x = 1, 2, 3, 4... acac = 2, 4 pentanedione Procedure ...
February 14, 2013

Chemistry
what are the products when water,ferric chloride and ammonium thiocyanate are combined?
January 27, 2013

English
1. linking verb? 2. objective complement? 3. compound predicate nominative? 4. complete subject? 5. gerund phrase? 6. appositive phrase? 7. noun clause? 8. adverbial clause? 9. independent clause?
January 23, 2013

English
Identify the term that best describes the words/phrases in parentheses. 1. The teacher asked her pupils to (stay) put during the screening of the documentary. linking verb action verb 2. The committee judged the logo (the most appropriate symbol) for the association’s ...
January 23, 2013

biology
how can u investigate sugars or starch in a banana
January 21, 2013

Math
John is using a pulley to lift the sail on his sailboat. The sail weighs 150 N, and he must lift it 4.0 m. a. How much work must be done on the sail? b. If the pulley is 50% efficient, how much work must John do on the rope to lift the sail?
November 3, 2012

Math
A river does 6,500 J of work on a water wheel every second. The wheel's efficiency is 12%. a. How much work in joules can the axle of the wheel do? b. What is the power output of the wheel in 1 s?
November 3, 2012

Physical Science
When you do 100 J of work on the handle of a bicycle pump, the pump does 40 J of work pushing the air into the tire. What is the efficiency of the pump?
November 3, 2012

Math 9
sorry i meant 2.07 m or 207 cm
October 27, 2012

Math 9
so the answer would be 2.07 m or cm
October 27, 2012

Math 9
Please help me on this question. Thanks! One pole measured 1.35m and the smaller pole measured 0.83m. They needed to be tied together. They were attached by overlapping the ends and tying them together. The length of the overlap was 12cm. What is the total length of the new ...
October 27, 2012

Ashford University
Evaluate the ways in which the legacy of slavery has prevented the United States from building a more just society, supporting your evaluation with the textbook and additional sources. Define what Dr. King’s refrain, “free at last,” looks like to you and how our...
October 10, 2012

earth Geology
This is just a question that I was curious about, why do mountain belts run parallel to coastlines? Thanks
September 26, 2012

Physics
At the beginning of a basketball game, a referee tosses the ball straight up with a speed of 5.4 m/s. A player cannot touch the ball until after it reaches its maximum height and begins to fall down. What is the minimum time that a player must wait before touching the ball? I ...
September 23, 2012

A molecule of CHCl3 (chloroform), has the same shape as a molecule of carbon tetrahydride, CH4. But carbon tetrahydride’s boiling point is -164º C and chloroform’s boiling point is 62 ºC. Explain the difference between the boiling points of the two ...
September 21, 2012

English/help
Yesterday I posted three analogies, two I needed to know of they were correct, the other I was lost on, can someone take a look I have to go soon. Is the first one a comparison of Sandra and her fear to that of the kitten?
September 18, 2012

English
I am having trouble with finding the analogy in this one: sandra was sitting in the backyard avoiding the party. she jumped when she heard a noise but it was just a little gray ritten. he look even more scared of her and she was of him. He paused and then walk toward her ...
September 18, 2012

Math
Hi I am not good with math. Please tell me how to differentiate mixed numbers, order of operation,subtraction, divide and multiplication etc. Thanks!
September 14, 2012

health
what is intensity?
September 13, 2012

English 4
It's A.
September 6, 2012

English 4
Which of the following most distinguishes an epic from a mock epic? A. its subject matter B. its style C. its vocabulary D. its length I'm thinking its B.
September 6, 2012

Health
What physical symptoms often accompany social phobia? A. Difficulty talking B. Trembling C. Nausea D. All of the above help me please
August 30, 2012

health
What can spark weight concerns for girls and impact their eating habits in potentially unhealthy ways? A. High self-esteem B. Maintaining a healthy weight C. Peer pressure to look a certain way D. Positive reinforcement from parents about how one looks I need help pleaseee :(
August 3, 2012

chemistry
a current is passed through 500 mL of a solution of CaI2. the following electrode reactions occur: anode: 2I- ---> I2 + 2e- cathode: 2H2O + 2e- ---> H2 + 2OH- after some time, analysis of the solution shows that 35.7 mmol of I2 has been formed. a) how many faradays of ...
June 18, 2012

Math/Trig
How would I evaluate these trig functions without using a calculator? U: sin(-13π/6) cot 11π/6 cot(-14π/4) sec 23π/6 Thanks in advance ^^; and if you'd tell me step by step on how to do problems like these I'd be grateful :D
June 11, 2012

world history
of the Cold War, my bad ;D
June 7, 2012

world history
What are some political, economical, and social effects on the Cold War?
June 7, 2012

Chemistry
Explain how a barometer (mercury barometer) works using the kentic molecular theory
May 31, 2012

Chemistry
It requires 37.0 mL of a sodium hydroxide soltution to neutralize 0.75 grams of phosphoric acid. Using a balanced equation, determine the concentration of the sodium hydroxide solution.
May 21, 2012

geometry
The height of an equilateral triangular prism increases by one unit. The new lateral area is more than the original by how much? Answer the perimeter of the base the area of the base the height the area of one lateral face
May 21, 2012

Physics
A baseball is hit at ground level. The ball is observed to reach its maximum height above ground level 3.0 s after being hit. And 2.5 s after reaching this maximum height, the ball is observed to barely clear a fence that is 97.5 m from where it was hit. How high is the fence?
May 13, 2012

Physics
You are driving your car at a constant speed down the freeway. You are using 42 horsepower to do this. If the air resistance and frictional forces add up to 650 N, what is the net force on your car?
May 13, 2012

Chemistry
A saturated solution of sodium nitrate at 70oC is cooled to 40oC.  How many grams of precipitate are formed?
May 6, 2012

physics
a 15 kg bucket is raised to paint a ladder with an acceleration of 3 m/s.^2 what is the tension in the rope?
April 10, 2012

Math
Verify the identity & Justify the step.s cot (theta-pi/2)=-tan theta
April 10, 2012

Geometry
1. An airplane is flying at 36,000 feet directly above Lincoln, Nebraska. A little later the plane is flying at 28,000 feet directly above Des Moines, Iowa, which is 160 miles from Lincoln. A.assuming a CONSTANT rate of descent, what was the angle of descent? B. What is the ...
March 26, 2012

Math
The perimeter of a regular pentagon is 35in. What is the lenght of one side of the pentagon? Show your work.
February 21, 2012

English
Please help write a reaction on this Article, I want to give good presentation. How can I make it interesting? Thank you! So, far I think the Author is Energy literate and motivates readers through his words. Please tell me how I can include "Energy conversion, Energy ...
February 15, 2012

algebra
If a rocket is launched with an initial velocity of 1600 feet per second when will the rocket be 14400 feet high?
February 7, 2012

chemistry
A closed container with a mixture of hydrogen, helium, and argon has a total pressure of 2.90 atm. The partial pressure of hydrogen is 0.500 atm and the partial pressure of argon is 760. mm Hg. What is the partial pressure of helium?
January 25, 2012

Physics
A person pushes a 11.0 kg lawn mower at constant speed with a force of 76.0 N directed along the handle, which is at an angle of è = 41.0° to the horizontal. Calculate the normal force exerted vertically upward on the mower by the ground. Calculate the force the ...
November 28, 2011

Physics
A heavy-duty stapling gun uses a 0.162-kg metal rod that rams against the staple to eject it. The rod is pushed by a stiff spring called a "ram spring" (k = 32657 N/m). The mass of this spring may be ignored. Squeezing the handle of the gun first compresses the ram ...
November 13, 2011

Physics
A constant torque of 27.2 N · m is applied to a grindstone for which the moment of inertia is 0.158 kg · m2. Find the angular speed after the grindstone has made 18 rev. Assume the grindstone starts from rest. Answer in units of rad/s
November 11, 2011

algebra
On the day a child was born, a lump sum P was deposited in a trust fund paying 6.5% interest compounded continuously. Use the balance A of the fund on the child's 29th birthday to find P. (Round your answer to the nearest cent.) A = \$5,000,000 P = \$1
November 1, 2011

English Lit
Thanks for the great definitions- Do you think I was right on either of them? The first question slant rhyme and the secondcaesura?
October 7, 2011

English Lit
I have two questions about these Emily Dickinson's "Wild Night" 1.Which best describes the rhyme in the second stanza--internal rhyme,slant rhyme,feminine rhyme,descending rhyme or no rhyme Would it be slant rhyme? 2.Which is the following sound device used in ...
October 7, 2011

penn foster world history
i hope someone can help me as well.
October 6, 2011

Pre-Calculus
Thank you
October 3, 2011

Pre-Calculus
Can you show me how to find the rectangular equation: r=2cos(theta) + 3 sin (theta) All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you
October 3, 2011

Pre-Calc
Can you show me how to find the rectangular equation of r=2costheta + 3 sin theta All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you
October 3, 2011

math
A pair of sneakers cost s dollars. A pair of socks costs k dollars. If the store charges 5% sales tax, write an expression for the cost of one pair of socks and one pair of sneakers.
October 1, 2011

Math
Jan is on year younger than her brother Bill and on year older then her sister Sue. The sun of the three children ages is 57. How old is each child.k
September 27, 2011

math
Posted by kathy on Monday, September 26, 2011 at 8:05pm. 1.the square og 2 is the same as two times the difference of g and 10. 2. the product of 3 and the square of g equals the sum of thirty and the product of nine and g. i really need help on this i dont get it. thanks
September 26, 2011

Physics
A book is moved once around the edge of a tabletop with dimensions 1.75m x 2.25m. If the book ends up at the initial position, what is its displacement? If it completes its motions in 23s, what is its average velocity? What is its average speed?
August 28, 2011

Biomechanics
How do you compute the additional work done after a stretch-chorten cycle?
August 5, 2011

math
A transformation T : (x, y) (x + 3, y + 1). The image of B(4, 1) under this transformation is
July 18, 2011

Accounting
purchased dental equipment at 15,000 and invested cash of 500,000
July 17, 2011

math
A transformation T : (x, y) (x + 3, y + 1). The image of B(4, 1) is
July 17, 2011

math
Indicate the equation of the line that is the perpendicular bisector of the segment with endpoints (4, 1) and (2, -5).
July 8, 2011

math
The slope of a line that is perpendicular to a line whose slope is -2/7 is
July 8, 2011

geometry
Indicate the equation of the line through (2, -4) and having slope of 3/5.
July 7, 2011

geometry
In rectangle ABCD, if the coordinates of A are (0, 0) and the coordinates of C are (r, s), find the coordinates of B.With A and D being on the bottom line and B and C on the top with B over A.
July 6, 2011

math
In rectangle ABCD, if the coordinates of A are (0, 0) and the coordinates of C are (r, s), find the coordinates of B.With A and D being on the bottom line and B and C on the top with B over A.
July 5, 2011

Chemistry
What type(s) of intermolecular forces allow CO2 to dissolve in water? Do CO2 and H2O have a relatively strong or weak attraction to one another? Explain. Please and thank you!!
June 5, 2011

math
a government bod pays 100 in a year at a discount rate of 5%(assume simple interest). How much did the bond cost? What is the annual percentage rate? Should it be more or less than 5%?
June 2, 2011

writing
Compare and contrast your abilities as an academic writer now as opposed to when you began your studies at the University. Using four comparatives and four superlatives within your responses, explain what has led to these changes and what changes you will make in the future.
May 31, 2011

simplex Method
A company manufactures two products, A and B, on two machines, I and II. It has been determined that the company will realize a profit of \$3/unit of product A and a profit of \$4/unit of product B. To manufacture 1 unit of product A requires 6 min on machine I and 5 min on ...
April 24, 2011

Simplex Method
Solve the linear programming problem by the simplex method. Maximize P = 27x + 27y + 36z subject to x + y + 3z < 15 4x + 4y + 3z < 65 x > 0, y > 0, z > 0 x + y = z = P =
April 24, 2011

simplex Method
Solve the linear programming problem by the simplex method. Maximize P = 5x + 4y subject to 3x + 5y < 78 4x + y < 36 x > 0, y > 0 x = y = P =
April 24, 2011

Simplex Method
Solve the linear programming problem by the simplex method. Maximize P = 10x + 6y subject to x + y < 80 3x < 90 x > 0, y > 0 x = y = P =
April 24, 2011

geometry
The perimeter of a triangle ABC is 58cm.The base of the right triangle is 17 cm. What is th area of the right triangle and how do you figure it out?
April 20, 2011

HELPPP
Solve the linear programming problem by the method of corners. Minimize C = 5x + y subject to x + 3y ≥ 43 x + y ≥ 27 x ≥ 0, y ≥ 0
April 18, 2011

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