# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 717
1. ## Physics

A beam, B1, of mass M1 = 0.6887 kg and length L1=1 m is pivoted about its lowest point at P1. A second beam, B2, of mass M2=0.200 kg and length L2=0.200m is suspended (pivoted) from B1 at a point P2, which is a horizontal distance d=0.550, from P1. To keep

asked by Catherine on May 2, 2011
2. ## Statistics

According to a study by the Centers for Disease Control, the national mean hospital stay after childbirth is 2.1 days. Reviewing records at her own hospital, a hospital administrator calculates that the mean hospital stay for a random sample of 81 women

asked by Michael on November 9, 2013
3. ## Management Accounting

The Minnetonka Corporation, which produces and sells to wholesalers a highly successful line of water skis, has decided to diversify to stabilize sales throughout the year. The company is considering the production of cross-country skis. After considerable

asked by Anonymous on February 23, 2010
4. ## business accounting

The Minnetonka Corporation, which produces and sells to wholesalers a highly successful line of water skis, has decided to diversify to stabilize sales throughout the year. The company is considering the production of cross-country skis. After considerable

asked by GENE on February 11, 2008
5. ## Physics

Am I correct? Two carts have a compressed spring between them and are initially at rest. One of the carts has total mass, including its contents, of 5.0 kg, and the other has total mass of 3.0 kg. If the 3.0 kg cart is moving at 3.0 m/s after the spring is

asked by Me and I on February 3, 2014
6. ## SCIENCE,PHYSICS

A thin ring with resistance R=10 Ω and self inductance L=0.2 H rotates with constant angular speed ω=100 rad/s in an external uniform magnetic field perpendicular to the rotation axis. As a result, the magnetic flux created by the external field varies

asked by kk on July 18, 2013
7. ## Political Science: American Government

Can you please tell me if these are correct? Thank you! Generally, people with lower incomes, less education, and lower job status: a. are more conservative in their political opinions. b. are more liberal in their political opinions. c. are more moderate

asked by lara on March 11, 2011
8. ## algebra 2

A store sells rings with birthstones selected from the 12 different months of the year. The stones are arranged in a row. Part A: Mary wants a ring with a topaz, a sapphire, and a ruby set in a line. Write and evaluate an expression to show how many ways

asked by jenny on May 23, 2012
9. ## Algebra II

A store sells rings with birthstones selected from the 12 different months of the year. The stones are arranged in a row. Part A: Mary wants a ring with a topaz, a sapphire, and a ruby set in a line. Write and evaluate an expression to show how many ways

asked by Sharon on May 27, 2012
10. ## physics

When we say work is done by a force, we mean the force does

asked by Anonymous on September 17, 2013
11. ## Chemistry

The ionization energy of hydrogen is 1313 kJ/mol. Covert this energy to: wavelength (nm) 1/wavelength, reciprocal wavelength (cm^-1) spectral region? (IR, visible, UV, etc.) I know E=hv=hc/wavelength h=6.62 x 10^-34 J-s c= 3x10^8 v=c/wavelength But for

asked by Sarah on December 7, 2012

Describe how you would prepare the following two solutions. Be sure to include the type of glassware which you would use and as much detail as necessary for someone to actually prepare the solution using good laboratory technique. • 250 mLs of a 5% NaCl

asked by Joe on November 7, 2017
13. ## chem equilibrium

Determine the pH of a buffer that is prepared by mixing 100 mL of 0.2 M NaOH and 150 mL of 0.4 M acetic acid assuming the volume is additive. Calculate the pH of the solution when 0.5 mL of 1 M of HCl was added hence calculate the buffer

asked by John on December 15, 2015
14. ## Ethics

Which of the following was Tolstoys solution to the intense feelings of lifes utter lack of true and lasting meaning? my answer is C a. To devote his life to being an author. b. To devote his life to his family. c. An irrational faith in God. d. A rational

asked by Annmarie on February 18, 2014
15. ## chemistry

Glycerin, C3H8O3, is a nonvolatile liquid. What is the vapor pressure of a solution made by adding 159 g glycerin to 338 mL H2O at 39.8oC? The vapor pressure of pure water at 39.8oC is 54.74 torr and its density is 0.992 g/cm3.

asked by rose on October 5, 2016
16. ## chemistry

I believe the answer is c I just wanted to make sure. What can help overcome a positive enthalpy of solution and allow a solid solute to dissolve in water? A. A decrease in entropy B. A large amount of energy released C. An increase in entropy D. A large

asked by Cortney on March 17, 2015
17. ## Chemistry

Phosphoric acid, H3PO4(aq), is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH, and the concentrations of all species in a 0.300 M phosphoric acid solution. kPa1: 2.16 kPa2: 7.21 kPa3:12.32 [H3PO4] = ?

asked by Paula on March 10, 2013
18. ## Chemistry

Phosphoric acid, H3PO4(aq), is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH, and the concentrations of all species in a 0.100 M phosphoric acid solution. pKa1 = 2.16 pKa2 = 7.21 pKa3 = 12.32 [H3PO4] = ?

asked by Nancy on February 26, 2013
19. ## Chemistry

Carbon tetrachloride (CCl4) and benzene (C6H6) form ideal solutions. Consider an equimolar solution of CCl4 and C6H6 at 25°C. The vapor above this solutionis collected and condensed. Using the following data, determine the composition in mole fraction of

asked by MInx on December 7, 2011
20. ## data management gr.12

In how many ways can a committee of 8 members be chosen from 7 males and 9 females if the committee must contain at least 3 males? Please verify if my solution is correct: total# of 8 members 16C8 #with NO males 7C8 # with at least 3 males (7C3 x 4C2)+

asked by Anonymous on December 22, 2016
21. ## chem

an (aq) ammonium chloride solution, rather than H2SO4, is used in the hydrolsis of the magnesium complex of 1,1-diphenylethanol to ensure that no acid catalyed dehydration occurs. write the chemical structure of the dehydration product from

asked by yen on March 7, 2009
22. ## math

The formula T=2*pi*sqrt[L/32] gives the period of a pendulum of length l feet. The period P is the number of seconds it takes for the pendulum to swing back and forth once. Suppose we want a pendulum to complete three periods in 2 seconds. How long should

asked by Gabi on April 11, 2011
23. ## chemistry

a 275mL sample of vapor in equilibrium with 1-propylamine at 25C is removed and dissolved in 0.500L of H20. For 1-propalamine, Kb=3.72*10^-4 and the vapor pressure at 25C is 215 torr. (a)What should be the pH of the aqueous solution? (b) How many mg of

asked by kate on March 22, 2011
24. ## Chemistry

Sodium sulfate is slowly added to a solution containing 0.0500 M Ca^2+ (aq) and 0.0390 M Ag^+ (aq). What will be the concentration of Ca^2+ (aq) when Ag2SO4(s) begins to precipitate? What percentage of the Ca^2+ (aq) can be separated from the Ag^+ (aq) by

asked by Anon on March 17, 2013
25. ## Physics

A 25 kg box is along a horizontal floor and a force of 400 N pushes the box with an angle of 50 degree with the horizontal. Starting from rest, the box achieves a velocity of 2 m/s in a time of 4 seconds. Find the coefficient of sliding friction between

asked by Shekinah on April 10, 2016
26. ## chemistry

QUESTION 4 Data Set 3: 47.65 mL of a standard 0.1000 mol L–1 HCl solution is used to titrate a 0.3827 g sample containing NaOH and other impurities. None of the impurities reacted with the HCl. What is the mass of NaOH in the sample? a. 0.1737 g b.

asked by jess on May 29, 2016
27. ## chemistry

A 275 mL sample of 1-propylamine vapor (in equilibrium with the liquid) at 25 °C is removed and dissolved in 0.500 L of H2O. For 1-propylamine, Kb = 3.72 x 10-4 and the vapor pressure at 25.0 °C is 316 Torr. a. What should be the pH of the aqueous

asked by Andreea Grigore on March 15, 2017
28. ## Dr. Bob...Chemistry

you just answered a question for me, but the following are my answers to choose from. it was the 2nd question that I posted. about hydrocloric acid solution mixing with sodium bicarbonate. So, my answers to choose from are gas evolution, precipitation,

asked by Coug on November 20, 2009
29. ## Chemistry

Which of the following solutes, dissolved in 1000g of water, would provide a solution would the lowest freezing point? .030 mol of BaCl2, CO(NH2)2, CaSO4, CH3COOH, or .030 mol of NH4NO3 Again, the steps needed to determine for the freezing point.

asked by Marcus on February 19, 2013
30. ## math

Decide whether you would use a permutation, a combination, or neither. Next, write the solution using permutation notation or combination notation, if possible, and, finally, answer the question. A club with 34 members is to select five officers

asked by leelee kay on June 3, 2014
31. ## Chemistry

Describe how you would prepare the following two solutions. Be sure to include the type of glassware which you would use and as much detail as necessary for someone to actually prepare the solution using good laboratory technique. • 250 mLs of a 5% NaCl

asked by Joe on November 7, 2017
32. ## Chemistry

The molar mass of an unknown salt is 63.5. If 4.81 g is added to 81.1 mL of water the temperature changes from 20.95oC to 21.62oC. What is the molar heat of solution (J/mol) of the salt? (Assume all of the heat is transfered to the water) Express your

asked by John on March 7, 2012
33. ## Speech

I have to give a problem-solution speech on "Global Warming" what would i put into this? I need to point out some good solutions to the problem. It has to be a really interesting speech for the audience any pointers would be good. I also need a power point

asked by Rina on February 21, 2009
34. ## chemistry

After isolating the sulfonated product, the filtrate volume is found to be 25.25 mL. A dilution using 1 mL of filtrate and 99 mL of water gives a solution with an absorbance of 0.427. How many moles of indigo carmine were produced? (Molar absorptivity of

asked by Michael on September 22, 2014
35. ## Maths

I got this question, and found what I believe to be the solution, but want it confirmed. I started with: log[base5](2x+1) + log[base5](x-1) = 1 And used the product law: log[base5]((2x+1)(x-1)) = 1 log[base5](2x^2-x-1) = 1 Then I changed to exponential

asked by anonymous on June 8, 2010
36. ## ss

why did the slave trade grow dramatically in the americas in the mid-1500s a. people began to profit from selling native Americans abroad b. Sugar became an important export**** c. Gold mining required a great deal of labor d. Native Americans refused to

asked by Abby on December 12, 2018
37. ## physics

Two objects of masses 10.0 kg and 5.00 kg are connected by a light string that passes over a frictionless pulley. The 5.00kg object lies on a smooth incline of angle 40 degrees. Find the accelerations of each object and the tension in the string. Work:

asked by Anonymous on October 14, 2007
38. ## Science

o How did Mendel’s approach to answering scientific questions differ from that of his contemporaries? o How did his novel approach contribute to his success in describing how traits are inherited? o What advantages did he enjoy by choosing to study the

asked by Crystal on June 29, 2008
39. ## Calculus - Partial Integrals

I made this question, just wanted to make sure it didn't drown under the tide... I've set a problem up, something like this. s^4: A+D=0 s^3: -2A+B-3D+E=0 s^2: 2A-B+C+3D-3E=0 s^1: -2A+B-D+3E=4 s^0: A+C-E=4 It's easier to substitute for s the values that

asked by David on March 25, 2008
40. ## computer problem

i really need help in this....every time i try to download a program...for example...family feud it stops at 16 or less than that percent...it cant be my memory or my hard drive...i have plenty of that...just got new memory..so im really confused as maybe

asked by sheila on November 12, 2006
41. ## social studies

Why should the 3 R's be rehabilitated? Thank you for using the Jiskha Homework Help Forum. If, by the 3 R's, you mean "Reading, Riting, Rithmetic" you would be illiterate without them. Aside from their being so much enjoyment in reading, what would happen

asked by Kelsey on February 11, 2007
42. ## Physics/Science

I'm in 7th grade and I have a writing assignment that our teacher said "do your best" as an explanation. My best would be to call out sick the rest of the year! Hear goes. Explain the scientific accomplishments of Stephen Hawking. How dis his

asked by Kyle on October 6, 2016
43. ## Social studies

Why did the slave trade grow dramatically in the Americas in the mid-1500s? A. People began to profit from selling Native Americans abroad. B. Sugar became an important export. C. Gold mining required a great deal of labor. D. Native Americans refused to

asked by AaRena on October 30, 2018

Hi, I'm really struggling with my decision about two electives that I really like. One is Journalism and the other is Creative Photography. If anyone knows or has experience can you please tell me the pros and cons about these two electives please? Also, I

asked by Anonymous on May 16, 2016
45. ## civic education

Write a report on the movie “Sound of Music” and carry out the following task in the report: a) Identify two parenting styles as depicted by the two major roles in the monumental work of art b) Point out the scenes that touch “emotional adjustment to

asked by alex on March 9, 2019
46. ## Math

Posted by Lance on Friday, April 27, 2007 at 9:47pm in response to math. please give us one set of numbers so we can work an example for you. What was the percentage increase in motor vehicle production in countries outside the United States from 1950 –

asked by Sissy on April 27, 2007
47. ## Physics

Before railroad were invented, goods often traveled along canals, with mules pulling barges from the bank. If a mule is exerting a 12,000N force for 10km, and the rope connecting the mule to the barge is at a 20 degree angle from the direction of travel,

asked by Anonymous on July 20, 2018
48. ## social studies

why did the slave trade grow dramatically in the americas in the mid-1500s a. people began to profit from selling native Americans abroad b. Sugar became an important export**** c. Gold mining required a great deal of labor d. Native Americans refused to

asked by kenzi on December 12, 2018
49. ## Language

Determine the ideas that would be most worthy to share in a literary discussion about The Watsons Go to Birmingham-1963. Provide an explanation for your choices. How did the role you selected and the work you completed help you to understand more about the

asked by damara on December 9, 2016
50. ## algebra 1 help

fin the complement and the supplemnt of the angel measure 1) 130 complement-40 suplement-50 or vice versa if anyone can help me with some algebra work it would be greatly appreciated i am im algebra 1 and still on the second quarter and have until november

asked by cristina on August 20, 2005
51. ## Philosophy

key contributors to Christianity's's impact on philosophy http://ca.answers.yahoo.com/question/index.php?qid=20061025190551AAhv40b Here's an interesting response to this same question. There are some good ideas here to follow up on. Please note that we

asked by Shaun Clarke on January 31, 2007
52. ## civic education

Write a report on the movie “Sound of Music” and carry out the following task in the report: a) Identify two parenting styles as depicted by the two major roles in the monumental work of art b) Point out the scenes that touch “emotional adjustment to

asked by alex on March 10, 2019
53. ## social studies

why did the slave trade grow dramatically in the americas in the mid-1500s? a. people began to profit from selling native Americans abroad b. Sugar became an important export*** c. Gold mining required a great deal of labor d. Native Americans refused to

asked by lily on December 14, 2018
54. ## English

Which excerpt from George Orwell’s Shooting an Elephant best exemplifies a reflective essay? A.“The young Buddhist priests were the worst of all.” B.“As for the job I was doing, I hated it more bitterly than I can perhaps make clear.”

asked by dbh on June 10, 2019
55. ## Economic Geography

The geography of consumption if different from geography of production. Why? What does it mean to say that our geographies of consumption are becoming increasingly disjunct from the geographies of other aspects of our everyday lives (work, school, etc)?

asked by Steve on December 1, 2007
56. ## English

What information does not need to be cited in the text or on a Reference page of a college level research paper A. Exact words from another. B. Common knowledge found in a print. C.Paraphrasing of another work D.Statistical information found on a site.

asked by Tim on September 10, 2016
57. ## physics

A force of 100N pulls a box of weight 200N along a smooth horizontal surface makes 45(degree) to the floor . Calculate the work done by the force. A- in moving the box a distance of 25m along the horizontal. B- against gravity. C- against normal force.

asked by Mota on January 29, 2010
58. ## Physics ?_?

The model airplane is being spun at a speed of 20 m/s on a horizontal circle of radius 17 m. The mass of the plane is 0.86 kg. The person holding the guideline pulls it in until the radius becomes 13 m. The plane speeds up, and the tension in the guideline

asked by 4319 on October 19, 2012
59. ## Chemistry

Can someone please help guide me through this question? Calculate the change in entropy of the surroundings . No work is done. You begin with 1 mol of CO. The reaction takes place at 298 K. 2CO + O2→ 2CO2 BDE (C≡O): 1072 kJ/mol; BDE (O=O): 495 kJ/mol;

asked by Emily on March 8, 2018
60. ## Calculus Applied Integrals

A cylindrical tank of 22.1m high with radius 12.2m is filled to 10m high with water. How much work must be done to pump all the water out of the tank? (density of water is 1000\ kg/m^3) I used similar triangles somewhere in my calculations to find the

asked by Isabella on March 24, 2016
61. ## Physics

Consider a torque ⃗τ that is constant in both magnitude and direction, and acts on a rigid body of mass 10 kg at a point 1 m from the pivot. How much work does the torque do on the rigid body, if it turns through an angle of 180◦ while the torque is

asked by Kaylee on July 2, 2014
62. ## Marketing

Good marketing managers know that A.marketing strategies can't influence consumer "wants." B.marketers can't create internal drives in consumers C.it is not that difficult to develop a marketing strategy that gets consumers to do what they don't want to

asked by Timmy on May 27, 2017
63. ## Physics

A rod made from a particular alloy is heated from 23.5°C to the boiling point of water. Its length increases by 8.21 10-4 m. The rod is then cooled from 23.5°C to the freezing point of water. By how much does the rod shrink? I will be happy to critique

asked by Mary on April 13, 2007
64. ## Physics

A standard man uses a bicycle of mass 30 kg to travel at constant speed along a 5 km long road up a hill. The hill rises 250 m above the starting point and the man needs 30 minutes to get to the top. How much work does the man do during the trip? What was

asked by Some Guy on March 16, 2013
65. ## Physics

A 19.5 kg block is dragged over a rough, horizontal surface by a constant force of 110 N acting at an angle of angle 31.1◦ above the horizontal. The block is displaced 6.74 m,and the coefficient of kinetic friction is 0.156.What is the net work done on

asked by Caryn on February 18, 2010
66. ## Physics

A 19.5 kg block is dragged over a rough, horizontal surface by a constant force of 110 N acting at an angle of angle 31.1◦ above the horizontal. The block is displaced 6.74 m,and the coefficient of kinetic friction is 0.156. What is the net work done on

asked by Caryn on February 18, 2010
67. ## physics

a block of mass 0,5kg is attached to a spring .The spring is compressed to a distance of0,1m.The block is released .The block moves 0,07m past the equilibrium position .What is the force of friction that does work on the block. spring constant is 500

asked by ruby on August 29, 2014
68. ## Management

Jane is an editor for a large company. Jane performs most of her work at home and visits the office twice a week to attend meetings. Jane is a. utilizing flexible time, b. telecommuting, c. part-time employee, d. a temporary employee.

asked by marilia on December 4, 2009
69. ## Physics, Angular displacement

A 20 kg sled is being pulled along a horizontal stretch of snow covered ground by a horizontal force of 30 N. Starting from rest, the sled attains a speed of 2.0 m/s in 12 m. Using the work-energy theorem, find the coefficient of kinetic friction between

asked by kaleb on July 1, 2012
70. ## Math

Diamonds are measured in units called a carat. One carat equals 200mg. If a diamond is 0.600 carat, what is the mass of the diamond in ounces? * 1kg=2.205 pounds* *1pound= 16 ounces* . . How do I get to the answer showing work/setting it up?

asked by Karen on August 26, 2015
71. ## Physics

Starting from rest, a 4-kg block slides 10 m down a frictionless 30 degree incline. Determine the work done on the block by a) The force of gravity b) The normal force c) All of the forces (the net force) on the block d) Find the Kinetic energy of the

asked by Rachel on March 4, 2015
72. ## Physics

In a container of negligible mass, 0.100 kg of steam at 110°C and atmospheric pressure is added to 1.00 kg of water at 20.0°C. (a) If no heat is lost to the surroundings, what is the final temperature of the system? (b) At the final temperature, how many

asked by Margret on November 25, 2015
73. ## AP Physics

Using what's only in chapter one The Nature of Science Models, Theories, and Laws Measurement and Uncertainty; Significant Figuers Units, Standards, and SI System Converting Units Order of Magnitude: Rapid Estimating Dimensions and Dimensional Analysis How

asked by AP Physics on June 10, 2009
74. ## College Physics

A record company executive is on his way to a TV interview and is carrying a promotional CD in his briefcase. The mass of the briefcase and its contents is 4.00 kg. The executive realizes that he is going to be late. Starting from rest, he starts to run,

asked by Megan on October 13, 2009
75. ## Physics

A 79.5 kg snowboarder heads down a 28.0° hill that has a height of 62.8 m. If the hill is assumed to be frictionless and there is horizontal wind with a force of 98 N acting against the snowboarder, find the speed of the snowboarder as they reach the

asked by Anonymous on November 23, 2015
76. ## Economics

1. Which of the following is the best example of a public good? A. Highway system B. Shopping mall C. Country club D. Movie theater 2. Which of the following is a characteristic of a public good? A. the private sector could provide it more efficiently B.

asked by Clark on July 5, 2016
77. ## Math

24. two stores carry a similar stereo for the same original price of \$573. one store offers a 16% discount and the second store sells the stereo for 458.40. which store gives the bigger percent discount? Justify your answer. ( 4 points) I don't understand

asked by Rose on January 8, 2018
78. ## drbob222,math , algebra

Sorry i made a typo it suppost to read 20m for one base not 12. Directions: Crafts. Rose's garden is in the shape of a trapezoid. If the height of the trapezoid is 16m, one base is 12m, and the area is 224m ^2, find the length of the other base. Area= 1/2

asked by jasmine20 on December 19, 2006
79. ## Algebra

Joleen is a sales associate in a clothing store. Each week she earns \$250 plus a commission equal to 3% of her sales. This week her goal is to earn no less than \$460. Write and solve an inequality to find the dollar amount of the sales she must have to

asked by Kevin on June 3, 2010
80. ## Math.

I need help with factoring polynomials using pi and sigma. I understand it, but what is the best way to find the sigma when the terms are, in my opinion, really large? It takes me forever to find it, guessing. Let's say the problem is this: 56x² - 53xy +

asked by Claudia C. on December 1, 2008

Each exterior angle of a regular polygon is 15 degrees. 1.Determine the number of sides of the polygon. 2.What is the sum of the interior angles? if the exterior angle is 15, then the interor angle is 165. 165n=(n-2)180 solve for n. I need help to study

asked by Shay on February 25, 2007
82. ## Pre-cal/trig

A dog is attached to a 21​-foot rope fastened to the outside corner of a​ fenced-in garden that measures 18 feet by 22 feet. Assuming that the dog cannot enter the​ garden, compute the exact area that the dog can wander. I'm confused as to how they

asked by Aiden on January 18, 2017
83. ## Calc III

Express the volume of the solid that the cylinder r = 4cos(theta) cuts out of the sphere of radius 4 centered at the origin with a triple integral in cylindrical coordinates. I have already found the intervals, but I cannot solve it. The bounds are

asked by Anon on November 2, 2016
84. ## math

I just don't understand the geometry behind this! How is theta 1 in red equal to theta 1 in black? And same with theta 2? I need to figure out the angles to solve the rest of my problem, but I am already stuck in figuring out how these angles are the same.

asked by Kim on June 8, 2011
85. ## phys

The speed of ocean waves depends on their wavelength Î» (in meters) and the gravitational field strength g (in m/sË†2) in this way: V=KÎ»Ë†p GË†q Where K is a dimentionless constant. Find the value of the exponents p and q. Consider the

asked by Cheyenne on August 29, 2005
86. ## Mathmatics.. 9th grade

Your family is driving 188 miles to visit a family member, your father drives 63 miles then stops for a break, a) How many more miles are left in the trip, B) How long will the remainder of the trip take? *It says to label a variable, write an equation and

asked by Not putting it on September 15, 2010
87. ## algebra,math

is there a good website where describes the importance of function notations. http://www.cut-the-knot.org/do_you_know/FunctionMain.shtml After reading the website it gives me the definition of function notations. Although what is important about function

asked by jasmine20 on January 29, 2007
88. ## math

Find the sum of 8x cube y +2xy cube -18and -12x cube y +7xy cube and subtract it from the sum of 19x cube y -17xy cube +12and -21+5xy cube .? PLEASE SOLVE IT ?????

asked by Anonymous on June 4, 2017
89. ## finance

Bristol Sales had the following transactions for DVD’s in 2012, its first year of operations. Jan. 20 Purchased 75 units @ \$17 = \$1,275 Apr. 21 Purchased 450 units @ \$19 = \$8,550 July 25 Purchased 200 units @ \$23 = \$4,600 Sept. 19 Purchased 100 units @

asked by Monty Douglas on January 21, 2011
90. ## Physics mechanics

A piece of cord 2.5m is connected between two points 2m apart horizontally. A massless pulley is placed on the cord and a force 20N at angle - 80 degrees is applied to it. 1. Show that when the pulley reaches a state of rest, the angle that the positions

asked by Faith on November 3, 2013
91. ## english COM215 axia

okay for this scenario i have to write at least a 350 word response, and decide to whom the solution should be written to and why, and whether it should be email, memo, or letter: The trip scheduled for mexico during spring break has been cancelled due to

asked by Michelle on August 24, 2007
92. ## Chemistry

You have 2 chemicals A (solid), but you do not know the exact composition od either one of them. You do know that all together, there is SOME combination of sodium, barium, chloride and phosphate (PO4^-3) present. You disolve both chemicals in water. then

asked by Anonymous on July 18, 2010
93. ## Chemistry

Write a balanced net ionic reaction for the reduction of cupric ion (Cu2+) by hydroxylamine (NH2OH) in acid solution, using the smallest integer coefficients. (Do not include symbols for state of matter in your answer). in order for this to reduce Cu+2 to

asked by Joseph on October 19, 2015
94. ## chemistry

addition of 1.280g of zinc metal to 100mL of 0.3917 M HCl in a coffee-cup calorimeter causes the temperature to increase from 1 degrees celsius to 22.11 degrees celsius. What is the value of the change of Hrxn for the following equation: Zn(s) +

asked by xx on November 13, 2014
95. ## VOCABULARY

1. Barren is to produce as a. inhumane is to abuse b. timid is to fear c poised is to enjoy d ignorant is to know Ans d 2. resume is to career as a. ruce is to war b. speaker is to oration c. synopsis is to plot d. paragraph is to sentence Ans b 3. scurry

asked by need help on July 15, 2014
96. ## Biology

I need help with a couple of questions. I have included what I think the answers are. Could you let me know how I did? 1- A woman who recently came home from a tropical vacation now has abdominal pain and diarrhea. Her blood test results show an elevated

asked by BB on September 8, 2010
97. ## english- writing

1.In a two page double-space essay, using APA formatting, please respond to the following blog conversation that took place last year on a popular sports fan website. Cite 2 references that support your opinions. When people sit around and have discussions

asked by jonjon on October 1, 2011
98. ## Chemistry-Gases

A common laboratory preparation of hydrogen on a small scale uses the reaction of zinc with hydrochloric acid. Zinc chloride is the other product. (a) If 13.0 L of H2 at 765 torr and 20.0 °C is wanted, how many grams of zinc are needed, in theory? (b) If

asked by Anonymous on April 2, 2014
99. ## Financial Math Help? (Determine compound period)?

Future value of a \$200 deposit in an account that earns 6.25% annual interest is \$272.71 after 5 years. Determine the compounding period for this investment. My work: PV=FV(1+I/n)^ (-n) 200=272.71(1+0.0625/n)^-5n log0.73=log(1+0.0625/n)-5n This is where I

asked by Sam on June 11, 2013
100. ## Chemistry Confusion!

1 mol of an ideal gas expands under isothermal conditions (T=298.15K). The initial pressure and volume is 2.00 atm and 1.00L respectively, and the final pressure is 1.00 atm. Find the expansion work. The answer is  w =  -101.325 J. I am unsure how to

asked by Derek on November 15, 2008