# 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 745
1. ## math

A small person with a mass of 50kg walks up two flights of stairs. A heavy person with a mass of 105 kg walks up the same stairs. Who did more work and why?

asked by jace on February 10, 2016
2. ## algebra 2/trig

Tina can paint a room in 8 hours, but when she and her friend Emily work together, they can complete the job in 3 hours. How long would it take Emily to paint the room alone?

asked by Danielle on April 9, 2014
3. ## physics

A journey consists of two displacements: the first is 500m in a northerly direction and the second is 200m in an easterly direction. In a space below draw, to scale, a vector diagram of these displacements. State the scale of your diagram. On your diagram,

asked by olive on January 31, 2011
4. ## Math

Ed’s rental charges a flat fee of \$5 plus \$2 per hour to rent a pair of skates. A. Write an equation to model the cost of renting skates, y, for x hours. B. Graph the equation. Label the y-intercept. C. Use the graph to find the cost for renting the

asked by Anonymous on February 24, 2017
5. ## Economics

Suppose that a nation has implemented a system for applying a tax rate of 2 percent to the incomes earned by the 10 percent of its residents with the highest income. All funds collected are then transferred directly to the 10 percent of the nation's

asked by Anonymous on November 6, 2009
6. ## astronomy

when earth and mars are closest to each other in their orbits the angular separation between mars's moon phobos and the surface of mars is observed to be 22 arc seconds. if phobos orbits mars every .31910 days what is the average density of mars expresses

asked by jessica on July 16, 2007
7. ## Math

Solve the given equation in the interval [0,2 pi]. Note: The answer must be written as a multiple of pi. Give exact answers. Do not use decimal numbers. The answer must an integer or a fraction. Note that pi is already provided with the answer so you just

asked by Bryan on November 30, 2007
8. ## English

I worked hard with my mother in the fields. It was hard work, but I learned a lot about farming. ------------------- In the passage, what does 'it' refers to? What is the part of speech of 'a lot'? Does 'a lot' modify 'learned' or is 'a lot' the object of

asked by John on August 25, 2008
9. ## Physics

A horse with the mass of 1131 kg pull on the rope attached to a pulley to lift a 58 kg stone up a wall. If the wall is 14.1 m tall how much work will the horse due to lift the stone up the wall in 15.7 seconds?

asked by Daisy on May 6, 2019
10. ## Physics

Michelle pulls a 14.5 kg wheeled cart with a rope along a flat road. The rope makes a 28.0 degree angle with the horizontal. If the tension in the rope is 350 N and she pulls the cart 56.7m how much work does Michelle do?

asked by Becky on March 21, 2012
11. ## chemistry

I have to calculate the vapor pressure of water at 25.0 degrees celicus. The heat of vaporization of water is 40.65 kj/mol and the vapor pressure of water is 92.7 Torr at 50 degrees celcius. I know I should use log10 P=A- B/C+T but I don't know how to work

asked by Mary on January 30, 2015
12. ## physics

To push a 16 kg crate up a frictionless incline, angled at 32° to the horizontal, a worker exerts a force of 108.0 N, parallel to the incline. As the crate slides 1.50 m, how much work is done on the crate by the worker's applied force?

asked by Abby on October 24, 2014
13. ## physics

An electric force moves a charge of +1.80×10-4 C from point A to point B and performs +5.80×10-3 J of work on the charge. (a) What is the change in the electrical potential energy of the charge as it moves from A to B? (b) Determine the potential

asked by kim on February 13, 2019
14. ## physics

If an ideal gas does positive work on its surroundings, we may assume, with regard to the gas: A. Volume increases B. Internal energy decreases C. Pressure decreases D. Temperature increases E. Pressure increases

asked by Idali on April 9, 2017
15. ## physics

a 20-kg box sits on a level floor. the coefficient of kinetic friction between floor and box is 0,60. how large a friction force opposes the motion of the box while moving? how much work must be done against friction to move the box 5,0 m?

asked by sutris on October 27, 2014

kyle just started a new job that pays \$7 per hour. He had been making \$5 per hour at his old job. Kyle worked a total of 54 hours last month and made \$388 before deductions. How many hours did he work at his new job?

asked by autumn on May 23, 2010
17. ## physics

a force F is applied in horizontal to a 10kg block. the block moves at a constant speed 2m/s across a horizontal surface. the coefficient of kinetic friction between the block and the surface is 0.5. the work done by the force F in 1.5 minutes is?

asked by kristen on July 23, 2014
18. ## Math

kyle just started a new job that pays \$7 per hour. He had been making \$5 per hour at his old job. Kyle worked a total of 54 hours last month and made \$388 before deductions. How many hours did he work at his new job?

asked by Lucas on December 9, 2010
19. ## Math

kyle just started a new job that pays \$7 per hour. He had been making \$5 per hour at his old job. Kyle worked a total of 54 hours last month and made \$388 before deductions. How many hours did he work at his new job?

asked by Lucas on December 9, 2010
20. ## AP Physics C

when a block is pulled out to x=+4.0cm, we must apply a force amgnitude 360N to hold it there. we pull the block to x=11cm and then realease it. how much work does the spring do on the block as the block moves from xi=+5.0cm to a)x=+3.0cm, b)x=-3.0cm,

asked by Olivia on October 3, 2012
21. ## algebra

susie has designed an exercise program for herself. one part requires her to walk between 25 and 30 miles each week. she plans to walk the same distance each day five days a week. what is the range of miles that she should walk each day? write and solve a

asked by meghan on November 24, 2008
22. ## Physics

A soccer player kicks a football frombground level with an initial velocity of 27.0m/s, 30deg. Solve for the: A. Ball's hang time B. Range C. Max Height Ignore air resistance. (Hint: hang time refers to the time the ball is in the air.)

asked by Candice on November 21, 2012
23. ## calculus

A cylindrical tank is to have a capacity of 1000 m³. It is to fit into a foundry that is 12 m wide with a height of 11 m. The base of the tank will cost half as much as the top. The metal for the side of the tank will cost four fifths as much as the top.

asked by nal on July 22, 2015
24. ## math

please help me to solve this problem A swimmer going downstream takes 1hour,20minutes to travel a certain distance. It takes the swimmer 4hours to make the return trip against the current. If the river flows at the rate of 1.5mph. Find the rate of the

asked by joy on July 31, 2010
25. ## Math/Physics

How would you solve this? 1/2 mv^2 - 1/2 m x 25 = mg x 100sin20 I obtained this from the question: A girl on a sledge starts, with a speed of 5 m/s, at the top of a slope of length 100 m which is at an angle of 20 degrees to the horizontal. The sledge

asked by Autumn on January 16, 2018
26. ## algebra 2

A flagpole at a right angle to the horizontal is located on a slope that makes an angle of 12 degrees with the horizontal. The pole's shadow is 16 meters long and points directly up to the slope. The angle of elevation of the sun is 20 degrees. Draw the

asked by katie on December 7, 2010

Can someone explain the steps to solve this problem? If a number ends in zeros, the zeros are called terminal zeros. For example, 520000 has four terminal zeros, but 502,000 has just three terminal zeros. Let N equal the product of all natural numbers from

asked by Sharron on October 21, 2010
28. ## chemistry

A puncture in the tubing of a refrigerator can cause severe frosbite as chloroethane C2H5Cl, vaporizes. Use this thermochemical equation to calculate the heat absprbed when 23.6g of chloroethane vaporizes at its boiling point (9.66kj) C2H5Cl + 26.4kj arrow

asked by Ted on November 19, 2012
29. ## algebra

A flagpole at a right angle to the horizontal is located on a slope that makes an angle of 12 degrees with the horizontal. The pole's shadow is 16 meters long and points directly up to the slope. The angle of elevation of the sun is 20 degrees. Draw the

asked by marlie on December 8, 2010
30. ## algebra

I have tried this problem over and over and just not getting how to do it can someone help I don't want the answer I just need showed how to do it. solve using the formula L 0.000169d^2.27/h where L is the proper length in feet of the letters on pavement,

asked by summerwings on March 14, 2010

Solve the problem. Round to the nearest tenth unless indicated otherwise. The weights of certain machine components are normally distributed with a mean of 8.5 g and a standard deviation of 0.09 g. Find the two weights that separate the top 3% and the

asked by maczindahouse on February 28, 2019
32. ## Math

The average price in dollars to rent a studio in Back Bay, Boston, Ma. can be approximated by the equation p=30.2t + 587,where t is the number of years since 1990. Solve this equation for t and use the new equation to determine approximately what year it

asked by Mark on June 12, 2014
33. ## Chemistry

The apparatus contains methane and oxygen at a temp of 383K. Here is the reaction: CH4(g) + 2O2(g) --> CO2(g) + 2H2O(g) solve for final pressures of all species and the final total pressure, For CH4 the volume = 1.164L the pressure = 6atm For O2 the volume

asked by Terry on October 13, 2015
34. ## Calculus and vectors

A cylindrical tank is to have a capacity of 1000 m³. It is to fit into a foundry that is 12 m wide with a height of 11 m. The base of the tank will cost half as much as the top. The metal for the side of the tank will cost four fifths as much as the top.

asked by Annie on January 22, 2014
35. ## math

Please show me how to calculate this problem: The school cafeteria sells two kinds of wraps: vegetarian and chicken. The vegetarian wrap costs \$1.00 and the chicken wrap costs \$3.20. Today they made \$99.20 from the 42 wraps sold. How many of the wraps sold

asked by Jane on December 23, 2011

Sam is making muffins. One bath is blueberry and one batch is bananna. The third bath is twice as big as the blueberry and bananna batch. If Sam made 96 muffins, how many muffins were in the blueberry and banana batches? I came up with 32 can someone

asked by daniel's mom on February 29, 2012
37. ## algebra

A typical acoustic guitar has a range of three octaves. When the guitar is tuned to “concert pitch,” the range of frequencies for those three octaves is between 82.4 Hz and 659.2 Hz inclusive. Write a compound inequality to show the frequencies that

asked by josh on September 4, 2016
38. ## english

Need help identify logical mistake, in this paragragh. People are overreacting and taking this so seriously, blowing it completely out of proportion. There was no harm done and I don’t see why they are making it a big deal. I seriously doubt any

asked by TRISHA on March 9, 2010
39. ## Grammar

Choose the best answer. 1. Histologic sections of the appendix (show, shows, showing) acute and chronic periappendicitis charaterized by a mixed acute and chronic inflammatory infiltrate on the serosal surface associated with hemorrhage, vascular

asked by Leslie on May 12, 2011
40. ## Math Help!

Find 21/25 of \$27,000 A:\$32,140 B:\$5,670 C:\$22,680 D:\$23,760 Could you explain how it is C?? A new law requires that 12% of an individual's income be invested in the stock market. Your accounts show that you need to put \$420 in the stock market this year.

asked by @CrEaM@ on January 4, 2018
41. ## physics

How would one plug the gravitational constant into an equation? To be honest, I'm having a hard time with the idea of the gravitational constant in general, but I need to solve an equation for the circular velocity of a galaxy. I know I need to multiply

asked by Grace on March 8, 2012
42. ## Math???Help

Quinn lives in a house with a value of \$235,000. She has a mortgage of \$170,000. She owes \$5,900 on her car, which is valued at \$17,900. She has a credit card balance of \$823. Quinn also has \$1,200 in a bank account. What is Quinn’s net worth? A \$76,177

asked by YOLO on April 13, 2015
43. ## physics

Scientists want to place a 3100 kg satellite in orbit around Mars. They plan to have the satellite orbit a distance equal to 1.9 times the radius of Mars above the surface of the planet. Here is some information that will help solve this problem: mmars =

asked by lis on October 12, 2018
44. ## math,help

Okay i am still trying to understand how to come up with a radical expressions and their applications, and apply to your daily life. I need more examples if any can help me out .... Is there a way of modeling it if i wanted to use a house for instance i

asked by jasmine20 on April 3, 2007
45. ## Communications

I am supposed to survey people because I am doing a research paper about slang. Can anyone please answer these questions for me? The more answers I get the better. I would appreciate it so much. 1)What kind of slang do you use when text messaging? 2)What

asked by Monica on December 1, 2007
46. ## Math(check)

Solve 1= (y+3)(2y-2) Use foil on the right side. 1 = 2y^2 +6y -2y -6 so 1 = 2y^2 +4y -6 Now subtract 1 from boths sides giving us 0 = 2y^2 +4y -7 Now we need two numbers that multiply to be 2*(-7) or -14 and add to be 4. There doesn't appear to be any

asked by Anonymous on September 22, 2008
47. ## Physics

when tuning a piano, amusician plays a note that should be at 110Hz while at the same time tapping a 110Hz tuning fork and holding it next to the strings. He hears beats at 4Hz. (A) state and explain what frequencies the piano could be producing (b)

asked by Yosef on January 3, 2017
48. ## Physics

when tuning a piano, amusician plays a note that should be at 110Hz while at the same time tapping a 110Hz tuning fork and holding it next to the strings. He hears beats at 4Hz. (A) state and explain what frequencies the piano could be producing (b)

asked by Anonymous on January 3, 2017
49. ## Algebra

1)If y varies inversely as x and y = 3, when x = 6. Find y when x = 36. A)72 B)2 C)1/2 D)18 I chose C y1/x2 = y2/x1 3/36 = y2/6 18/36 = 1/2 2)Write the equation 4^-3 = 1/64 in logarithmic form. A)log64 = 4^3 B)log^-3 64 = 4 C)log^4 1/64 = -3 D)log^4(-3) =

asked by Jon on February 22, 2008
50. ## Chemistry

Calculate the work done when 70.0g of tin dissolves in excess acid at 3.00 atm and -15.0 C. Sn(s)+2H^+(aq) -> Sn^2+(aq)+H2(g) Assume ideal gas behavior. Any ideas? I've come up with a few different answers and can't come to a conclusion. I see the

asked by Doug on September 15, 2006
51. ## Language Arts

3. In "All Together Now," Jordan uses appeals to emotion and appeals to reason to try to persuade her readers that her views are important. In a paragraph, cite one example of each kind of appeal in her work. Then, explain whether you find Jordan's appeals

asked by Leia on December 8, 2016
52. ## Math

1) Which sum best represents the model shown below? There are 3 blue blocks, and each of them separately equal x^2. There are 2 green blocks that each separately equal x. There are 2 red blocks that each separately equal -1. And there is 1 yellow block

asked by sasha on April 29, 2015
53. ## Calculus

ok so apparently there's no way to express integral |f(x)|dx in standard mathematical functions... which I don't exactly buy... but ya the issue came up when I was trying to evaluate integral |x - 2|dx and apparently this is correct integral |x-2|dx = 2 -

asked by Joe on March 19, 2011
54. ## Calculus

ok so apparently there's no way to express integral |f(x)|dx in standard mathematical functions... which I don't exactly buy... but ya the issue came up when I was trying to evaluate integral |x - 2|dx and apparently this is correct integral |x-2|dx = 2 -

asked by Joe on March 19, 2011
55. ## Physics

I am having alot of difficulty with this problem,any help would be greatly appreciated. A baseball of mass 145 g leaves a pitcher’s hand at 96.6 mi/h (1 mi/h = 1.609km/h), but due to air resistance, it arrives at home plate 60.0 ft away (1 ft = 0.3048 m)

asked by bobby on March 26, 2012
56. ## PHYSICS

The model airplane in Figure 5.6 is flying at a speed of 13.6 m/s on a horizontal circle of radius 19.1 m. The mass of the plane is 1.20 kg. The person holding the guideline pulls it in until the radius of the circle becomes 10.6 m. The plane speeds up,

asked by Anonymous on March 11, 2014
57. ## English

When making multiple choice quiz for students about speaking. Do I need to use question marks in the answer choices. Example- Hello how are you. a)fine thank you and you b)good wasup c)I'm ok Answer (a) is the answer to the question but in itself is a

asked by Ajarn on August 17, 2012
58. ## Physics

fill in the blank ( Energy and momentum unit) 1. the work done to stretch a spring is not equal to the to force multiplied by displacement because force is ____ as the spring stretches 2. A child goes down a slide at the playground, gaining speed as she

asked by Liz on July 3, 2014
59. ## social studies

What is not an objective of the constitution a. Protect the rights of the minority b. Establish the structure of government. c. protect individual worth and dignity of all people. d. Protect the rights of the majority This was to be corrected from class

asked by lindsey on October 5, 2010
60. ## socal studies

why are elections necessary for a good governance? elections prevent people from holding power for long preiods of time********* elected official have a reason to serve the people elections reward officals for work experiences elected officials can be

asked by FluttershyK22 on August 22, 2016
61. ## physics

A steroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 4.5e4kg and the force causes the speed to change from 7100 to 5500m/s. (A) What is the work done by the force? (B)

asked by Natasha on February 26, 2012
62. ## English

Combine each pair of sentence into one sentence,or shorten a long sentence. Using an infinitive phrase 1)the mayor asked her aides.the mayor asked her aides to work hard. 2)kate was sad when she heard the news. 3)Andy was shocked when he discovered the

asked by Tinafey on June 26, 2016
63. ## Physics

Hello! I am having trouble figuring out the answer for this question: A 60 kg water skier is being pulled behind a boat. If the propulsive force applied by the 500 kg boat is 2.50 * 10^3 N, determine the acceleration of the skier and tension force in the

asked by Lucina on July 11, 2015
64. ## physics 1

The model airplane in Figure 5.6 is flying at a speed of 13.6 m/s on a horizontal circle of radius 19.1 m. The mass of the plane is 1.20 kg. The person holding the guideline pulls it in until the radius of the circle becomes 10.6 m. The plane speeds up,

asked by Anonymous on March 11, 2014
65. ## math

Given the following information, determine the sample size needed if the standard time estimate is to be within 5 percent of the true mean 99 percent of the time. Work Element Standard Deviation (minutes) Mean Observed Time (minutes) 1 0.20 1.10 2 0.10

asked by Brenda on December 3, 2011
66. ## HCA 240

I need help with this assignment about HIV/AIDS: An Overview its due sunday. I have to compose a 1,300 to 1,450 word paper in APA format. I have to explain the difference between HIV and AIDS, Descride various ways HIV can be transmitted, Identify and

asked by Markella Smith on November 4, 2009
67. ## chemistry

Perform this operation and report the answer to the correct number of significant figures: What is the mass of a cube of aluminum that is 4.0 cm on each edge? The density of aluminum is 2.7 g/cm3. Show all calculations leading to an answer. Vcube=

asked by Ciaria on March 3, 2015
68. ## geography

discuss how interactions between the Earth systems affect the climate Mary or Bob or whoever, Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your assignment on your own. If there's

asked by mary on April 21, 2007
69. ## Early childhood

If you were working with an infant who was having difficulty with stranger anxiety, what are some things you might do. Angie and/or Jessica, Please note that we don't do students' homework for them. Our tutors try to give you the information to help you

asked by Jessica on August 20, 2007
70. ## LA

Key: ☺ = My Answer! 1. Another word for buoyed is a. tired. b. bothered. c. lifted. ☺ 2. Distribution of a birthday cake involves a. cutting. ☺ b. baking. c. frosting. 3. To accumulate is to a. take apart. b. pile up. ☺ c. throw away. 4. A bogus

asked by Jman on April 11, 2013
71. ## History

Describe the atrocities committed in Congo by King Leopold’s colonial managers. Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your assignment on your own. If there's not a tutor

asked by Dali on August 10, 2007
72. ## English... Urgent

Hi this is a mystery problem can you solve this? The best forger of all time was indeed a most brilliant artist and a man respected and sought after in the criminal world. One day he was asked to copy \$50 notes but the police searched his premises before

asked by Tim on October 26, 2013
73. ## Math

Projectile motion: Let's suppose you throw a ball straight up with an initial speed of 50 feet per second from a height of feet. a) Find the equation that describes the motion as a function of time. My answer was x = 0 and y=-16t^2+50t+6 b) How long is the

asked by Abbey on April 16, 2010
74. ## Physics

two binary stars moving in a perfect circle orbit The stars have the same mass, the distance between them is one billion km (1x10^9 km), and the time each takes for one orbit is 10.4 Earth years. Determine the mass of each star (m1=m2). (this problem

asked by Luis on June 25, 2011
75. ## astronomy

At an average opposition, the Earth and Mars are separated by 0.52 AU. Suppose an astronomer observes Mars at opposition and that seeing blurs the images to a resolution of 1.0 seconds of arc. What is the smallest surface feature the astronomer would be

asked by Matt on November 14, 2011
76. ## physics

i keep trying to put this in my calculator but i keep getting the wrong answer...can someone please try it on their calculator and help me? thnks (a) Find the distance r to geosynchronous orbit. Apply Kepler's third law. T^2=((4pi^2)/(GM_E))r^3 Substitute

asked by cb on March 15, 2009
77. ## chem

Calculate the equilibrium concentration of NH3,Cu^2+,[ Cu(NH3)]^2+ ,[Cu(NH3)2]^2+,[Cu(NH3)3]^2+,and[Cu(NH3)4]^2+ in a solution made by mixing 500.0 ml of 3.00 M NH3 with 500.0 ml of 2.00*10^-3 M Cu(NO3)2. The sequential equilibria are Cu^2+

asked by jack on November 17, 2015
78. ## chemistry

How would I go about doing this question, can someone explain it step by step please, my answer I keep getting is 1.17m CaCl2, but the answer is 1.35m CaCl2? A 1.30M solution of CaCl2 in water has a density of 1.1g/mL/ What is the MOLALITY? Also, when for

asked by DrFunk on June 16, 2009
79. ## Physics

We saw in Example 5.7 how a centrifuge can be used to separate cells from a liquid. To increase the speed at which objects can be separated from solution, it is useful to make the centrifuge’s speed as large as possible. If you want to design a

asked by Rose on September 20, 2011
80. ## Math - Trig

The depth of water, h, in metres at time t, in hours, is given by the formula: h(t)=7.8+3.5sin[pi/6(t−3)]. Its a 24 hours period and t=0 is midnight. Provide an algebraic solution to determine the time(s) of day, the water reaches the depth of 10.29 m i

asked by Sherry on July 22, 2016
81. ## Chemistry

At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.56. What is the Ksp of the compound at 22 °C? I have found my [OH-] concentration (3.63x10^-4) but I'm not sure I'm

asked by Miaow on April 1, 2012
82. ## chemistry

By how much will the vapor pressure of water decrease if a solution at 40.0°C is produced by dissolving 16.0212 g of K3PO4 (formula mass = 212.30 g/mol) with 40.8480 g of water. The vapor pressure of pure water at this temperature is 55.30 mmHg. If the

asked by kat on February 21, 2014
83. ## Chem

In a coffee cup calorimeter, 50.0 mL of 0.100 M AgNO3 and 50.0 mL of 0.100 M HCl are mixed to yield the following reaction: Ag+ (aq) + Cl- (aq) -----------------> AgCl (s) The two solutions were initially at 22.60 °C, and the final temperature is 23.40

asked by Joe on November 2, 2011
84. ## math

what do we call the numbers that cannot be arranged into 2-row arrays? I think this is the 3rd time I've seen this question posed. I'm not aware of any special name for arrays with two rows, so I'd sure be interested to see what the quesioner has in mind

asked by Kristy on August 30, 2006
85. ## Hydrodynamics

Consider a fluid of constant density ρ and viscousity μ. The flow is assumed to be governed by the Navier-Stokes equation: ρ(∂v/∂t+(v·∇)v)=-∇p+μ∆v and the continuity (incompressibility) condition: ∇·v=0 where v denotes the velocity and p

asked by Johan on April 3, 2019
86. ## English

A nurse attended _______ her work place in time.________ all her sincerity she was attending _______ the patient but she knew that her effort _______ keeping the patient alive might end ______ smoke.The doctors of the board were shoked _________ the

asked by Rifa on November 3, 2014
87. ## Science

A)Could you add marbles to a beaker filled with sand and get the same results? B)How does the Particle theory model explain that a substance can be solid while having spaces between its particles? C)Why does 50 ml of water and 5oml of sugar NOT produce 100

asked by Harmony Ann on February 24, 2014
88. ## Chemistry

1. Hydrogen bromide(HBr) is a strong, highly corrosive acid and what is the pOH of a 0.0375M HBr solution? a)12.57 b)12.27 c)1.73 d)1.43 I can't fogure out what the answer should be as I don't know whether 0.0375M is the [H^+] or [OH^-] If 0.0375M is the

asked by anonymous on April 21, 2009
89. ## Organic Chem

Bromine will react with limonene according to this reaction (there's a picture, but I can't get that on here. So I'll do my best to write it out). 136.23 g/mol + Br2 ------> 296.04 g/mol Suppose 627 mg of limonene was reacted with 3.7 mL of a 7.7% (v/v)

asked by Marvin on November 2, 2011
90. ## Chemistry - help

This is a test for chlorides in NaOH sample. 1.0g of NaOH was dissolved in 5ml of distilled water, acidified with 4ml of dilute nitric acid and diluted to 15ml with distilled water. This mixture was poured into a test tube containing 1ml of AgNO3 solution.

asked by candy on September 21, 2010
91. ## math

Solve the linear equation: x+x+2+x+4+x+6=-28. State the property that justifies your first step and why you chose it. When I solved the equation I got the answer of ×=-10. However, I do not know what the property I need to state for my first step. Isn't

asked by Samantha on January 16, 2014
92. ## Commerce

Answer: profit= price - total cost P = price ( GIVEN IN THE QUESTION ) Total cost = (Average cost) * Quantity ( Because AC = TC/Q ) TC= Q^3 - 8Q^2 + 36Q + 3 TC is also equal to Q * P Therefore Q *( P ) = Q^3 - 8Q^2 + 36Q +3 now you can solve ( if necessary

asked by A. Ramesh on October 29, 2010
93. ## mathematics

find the area of the region between the curve y = 3-x^2 and the line y = -1 by integrating with respect to y you first have to solve for x x=(3-y)^(1/2) then area ⌠ (3-y)^(1/2 dy from -1 to 3 ⌡ =-2/3 (3-y)^(3/2 | from -1 to 3 = -2/3(0 - 8) = 16/3 but

asked by denisa on April 18, 2007
94. ## Math

Barbara is tiling her craft room with square tiles. She wants 6/10 of the square tiles to be red. If she used 18 red tiles, how many square tiles will be used to cover the floor . Draw an area model to help solve

asked by Judy on February 27, 2017
95. ## math

Find digits A and B in the number below so the folling condition are true. The 5-digit number must be divisible by 4. The 5-digit number must be divisible by 9. Digit A cannot be the same as Digit B. 12A3B Explain the steps you followed to solve the

asked by peter on December 21, 2011
96. ## Math ~CHECK MY WORK~

You have \$60 in your wallet and want to buy some new CDs. If the CDs are \$11 each, what number of CDs, x, can you buy? Write and solve an inequality. Then explain your answer. My Answer: 11x

asked by Wendy on January 16, 2014
97. ## Physical science

A hydraulic lift is used to lift a heavy machine that is pushing down on a 3.0 m2 piston A1 with a force F1 of 1200 N. What force F2 needs to be exerted on a 0.090 m2 piston A2 to lift the machine? im having problems tring to solve it can you please help

asked by Brandon on April 20, 2015
98. ## Calculus

Use the identity sin^2x+cos^2x=1 and the fact that sin^2x and cos^2x are mirror images in [0,pi/2], evaluate the integral from (0-pi/2) of sin^2xdx. I know how to calculate the integral using another trig identity, but I'm confused about how to solve this

asked by Rostrastics on January 19, 2016
99. ## Trig

Should the triangle be solved beginning with Law of Sines of Law of Cosines. Then solve the triangle. Round to the nearest tenth. A=56 degrees, B=38 degrees, a=13. Sines. I get confused on the formula. I know C=86 degrees

asked by Jon on March 7, 2008
100. ## chemistry

For combustion of 10 grams of C4H10 excess of O2, You are obtained 25 grams of CO2 according to the reaction (to balance): C4H10+ O2→ CO2+ H2O Calculate the reaction yield of the reaction. please,could anyone help me to solve this problem.

asked by Anonymous on July 11, 2016