# 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

91,330 questions, page 120
1. ## Chemistry

A popular volcano demonstration involves the thermal decomposition of ammonium dichromate: (NH4)2Cr2O7 (s) --> Cr2O3 (s) + N2 (g) + 4 H2O (g) How much work is done by the system when 2.00 g of ammonium dichromate (M: 257.07 g/mol) completely decomposes?

asked by FS on October 9, 2018
2. ## Chemistry

A popular volcano demonstration involves the thermal decomposition of ammonium dichromate: (NH4)2Cr2O7 (s) --> Cr2O3 (s) + N2 (g) + 4 H2O (g) How much work is done by the system when 2.00 g of ammonium dichromate (M: 257.07 g/mol) completely decomposes?

asked by TS on October 23, 2018
3. ## math

in chemistry class, todd has 1 liter of a 23% sulfuric acid solution, how much of a 15% sulfuric acid solution must he mix with the 1 liter of 23% solution to make a 18% solution?

asked by sup on December 12, 2015
4. ## algebra word problems

1) tina has 48 mL of a solution that is 25% acid. how much water should she add to obtain a solution that is 15% acid? 2) how many grams of sugar must be added to 60 grams of a 32% solution to obtain a 50% solution?

asked by mike on November 21, 2010
5. ## math

Shelby can paint a room in 4 hours. Zoe can paint the same room in 7 hours. How long will it take them to paint the room if they work together? If they start 9:30a.m., and want to see a movie that is playing 45 minutes from their house and starting 12:00

asked by muffy on September 12, 2009
6. ## Chemistry

Suppose you had an unknown solution that contained either dissolved NaCL, or NaNO3. You added AgNO3 to the unknown solution and observed that no solid forms. What can be concluded about the unknown solution? (use the solubility rules

asked by Lou on April 25, 2011
7. ## Chemistry

Suppose you had an unknown solution that contained either dissolved NaCL, or NaNO3. You added AgNO3 to the unknown solution and observed that no solid forms. What can be concluded about the unknown solution? (use the solubility rules

asked by Lou on April 25, 2011
8. ## Another caffeine from tea question

Can anyone show me the reaction of sodium carbonate with water to produce bicarbonate and hydroxide as sodium carbonate dissolves? And if any, what is the reaction of tannins and caffeine with this solution? Thanks loads!

asked by Scott on November 29, 2008
9. ## help

Tritium (H-3) has a half-life of 12.3 years. How old is a bottle of olive oil if the tritium content is 25% that of a new sample of olive oil? Show all calculations leading to a solution.

asked by Ciaria on March 11, 2015
10. ## math

ok Here is my solution Sales records at Burger Heaven show that an average of 5 out of 8 customers ask for catsup. If there are about 5,600 customers per week, about how many requests for catsup are expected each week?

asked by kristisparklez on January 12, 2009
11. ## Trigonometry - Identities and proof

Show that cot((x+y)/2) = - (sin x - sin y)/(cos x - cos y) for all values of x and y for which both sides are defined. I tried manipulating both sides in terms of trig identities but I don't really have a solution....help would be appreciated, thanks.

asked by Sam on November 13, 2013

a horizontal force of 8.0 newtons is used to pull a 20.-newton wooden box moving toward the right along a horizantal, wood surface, as shown. A. Determine the mass of the box. B. calculate the magnitude of the acceleration of the box.[Show all work,

asked by mike on November 28, 2010
13. ## Science

15. Which of the following factors is the most likely explanation for an energy deficit that results in exercise-induced exhaustion. A.Insufficient protein production B.Insufficient mitochondrial function. C.Impair urea elimination. D.Absence of oxygen

asked by AMGCSTRNBSN on March 28, 2016
14. ## science

Which of the following factors is the most likely explanation for an energy deficit that results in exercise-induced exhaustion. A.Insufficient protein production B.Insufficient mitochondrial function. C.Impair urea elimination. D.Absence of oxygen

asked by Tessy on January 23, 2016
15. ## Chemistry

Help me with this; For the second part of the analysis,you will be provided with hydrated crystal of oxalic acid (H2C204. 2H2O). weigh out accurately about 1.575g of oxalic acid in a weighing bottle. Dissolve the acid in a beaker, then transfer the

asked by Henry on June 17, 2018
16. ## Math

A can do a work in 30 days, B in X days, C can destroy the work in 50 days. If A and B work together alternating with C, they complete the work in 355/7 days. How long will it take for B to complete the work alone?

asked by Vamsi on July 29, 2017
17. ## chemistry

A solution is prepared by dissolving 0.5842g of oxalic acid (H2C2O4) in enough water to make 100.0ml of solution. A 10.00ml aliquot (portion) of this solution is then diluted to a final volume of 250.0ml. What is the final molarity of thus prepared oxalic

asked by NONO on November 18, 2011
18. ## Pharmacy math

How much dil HCL (10% w/w) HCL specific gravity = 1.045 would be required to prepare 2000ml of a solution containing 0.005 molar HCL? HCL m.w.t = 36.5 Who try to solve for me. Please help The right answer is 34.9ml

asked by Fai on July 28, 2012
19. ## Math

Solve the compound inequality -1 < X - 2 LESS THAN OR EQUAL TO 7 Your problem: -1 < x - 2 ≤ 7 Add 2 to all three quantities to get x by itself: -1 + 2 < x - 2 + 2 ≤ 7 + 2 1 < x ≤ 9 Solution set can be expressed this way using interval notation: (1,

asked by Kyle on March 20, 2007
20. ## math

I am confused need help a computer store sold a total of 300 items last month. the store sold six times as many hard drives as they did CD-RoM drives, and half as many floppy drives as hard drives. Based on this information,, how many of each item were

asked by Haydee on August 19, 2006
21. ## Chemistry

Please read to the bottom - This help was wonderful and absolutely correct, I'm asking a bit more regarding the same question, please read below. Imagine that you have been asked to prepare 500ml of a 0.25 mol L solution of Sodium Hydroxide, NaOH. Describe

asked by Dexter on October 15, 2010
22. ## Chemistry

IN the polystyrene beaker, mix 20mL of 0.1 M Acetic acid and 25mL of 0.1M Sodium Acetate and immediately measure the pH. Remove the electrode and add 5ml of 0.1 M HCl to this buffer. Stir the solution and measure the pH. _______________ INFO: concentration

asked by Saira on March 28, 2010
23. ## Chemistry

Question : ka1 and ka2 values of H2X is given 1*(10)^-5 M and 1*(10)^-9 M.50cm^3 of 0.2 M KOH and 50 cm^3 of H2X of unknown concentration is mixed together and the pH of the final solution is given as 7. 1)Find the concentration of H2X 2)Find the pH of the

asked by Aanya on May 20, 2017
24. ## chemistry

Question : ka1 and ka2 values of H2X is given 1*(10)^-5 M and 1*(10)^-9 M.50cm^3 of 0.2 M KOH and 50 cm^3 of H2X of unknown concentration is mixed together and the pH of the final solution is given as 7. 1)Find the concentration of H2X 2)Find the pH of the

asked by To Aanya on May 21, 2017
25. ## Physics

If the time taken to melt 10g of ice at 0 degree Celsius is 1 minute, how long will it take to vaporize 10g of water at 100 degree celsius using the same heater? Pls show the solution clearly. Thanks

asked by Da S on November 15, 2012
26. ## Math

Please show your solution and how you did it. Thank you so much. 1.If x and y are positive numbers such that x^y=y^x and y =2012x, what is x? 2. What powers of two prime numbers will give a product of 1000...000(this sign --> { below the 1000...000 and

asked by Aliza on December 4, 2012
27. ## chemistry

Describe how you would prepare 10 mL each of 2 M, 1.5 M, and 1 M NaCl solutions from a 2 M stock NaCl solution. Describe your actions–exactly what you woulddo–step-by-step–when preparing thissolution. Also show all calculations. Be sure all amounts

asked by Debbie on September 24, 2012

Which of the following is true about determining whether someone working for another is an independent contractor or an employee? a) The classification of the person doing the work depends on that person's job title. b)The classification of the person

asked by Gurv on April 12, 2007
29. ## Harvard Referencing, help please!

Hey, I have here Clinical Protocols in front of me from one of the hospitals. I'm writing up an assignment and need to reference some parts of the protocol. The system that we use in college is Harvard Referencing system but I never referenced protocols

asked by Carla on July 14, 2012
30. ## chemistry

200X buffer is given in class.How much of stock sol and how much distilled water is used to make? a)50 ml of a 1X buffer solution? b)100 ml of a 20X buffer solution? c)10 ml of a 400X solution

asked by anonymous on August 27, 2012
31. ## Chemistry

3.42 grams of Ba(OH)2 is placed in a flask, dissolved in water, and titrated with an HCI solution. It is found that 25.0mL of the HCI solution is required to just neutralize the Ba(OH)2. What is the molarity of the HCI solution?

asked by Leonarda on April 27, 2012
32. ## Cemistry

A solution is 36% silver nitrate (AgNO3) by mass. The density of this solution is 1.44 g/mL. The formula weight of AgNO3 is 170 g/mol. Calculate the molality of AgNO3 in this solution.

asked by Swagato on June 9, 2010
33. ## chemistry

Explain, with balanced ionic equations, why a. CuI2 dissolves in ammonia solution b. AgBr dissolves in NaCN solution, c. HgCl2 dissolves in KCL solution.

asked by Jin on July 19, 2010
34. ## Maths (Investments)

Kate is thinking about investing \$60 000 for 4 years. She deposits her money into an account which earns interest paid semiannually at a rate of 7% p.a. After 2½ years, the interest rate drops to 5.6% p.a. and stays constant for the remainder of the

asked by Ajay Devgan on June 22, 2012
35. ## Maths Investments

Kate is thinking about investing \$60 000 for 4 years. She deposits her money into an account which earns interest paid semiannually at a rate of 7% p.a. After 2½ years, the interest rate drops to 5.6% p.a. and stays constant for the remainder of the

asked by Ajay on June 26, 2012
36. ## math

Find the exact value of cos 300 degrees. thanks guys cos 300 = 1/2 = 0.500 how do you know? I am supposed to show my work. You ought to know the rule on 30-60-90 triangles. If the hyp is 2, the shorter side is 1, and the longer side is sqrt3. what does

asked by Bill on June 2, 2007
37. ## Chemistry

You need to prepare 1.0 L of a buffer with a pH of 9.15. The concentration of the acid in the buffer needs to be 0.100 M. You have available to you a 1.00 M NH4Cl solution, a 6.00 M NaOH solution, and a 6.00 M HCl solution. Determine how to make this

asked by Lily on February 25, 2018
38. ## Chemistry

A solution contains H2O2 in water. Complete decomposition of the H2O2 in 170 g of this solution yields 5.6 L of O2(g), measured at 0 oC and 101.325 kPa. What is the percentage by mass of H2O2 in this solution? Choose the closest answer. A 10% B 20% C 5.0%

asked by anon on May 17, 2016
39. ## Chemistry

1. You have been given a sample of unknown molarity. Calculate the molarity of a solution which has been prepared by dissolving 8.75 moles of sodium chloride in enough water to produce a solution of 6.22l. 2. You have a sample which consists of 428g sodium

asked by David on January 10, 2017
40. ## CHEMISTRY URGENT

1. You have been given a sample of unknown molarity. Calculate the molarity of a solution which has been prepared by dissolving 8.75 moles of sodium chloride in enough water to produce a solution of 6.22l. 2. You have a sample which consists of 428g sodium

asked by Anonymous on January 9, 2017
41. ## CHEMISTRY

You have been given a sample of unknown molarity. Calculate the molarity of a solution which has been prepared by dissolving 8.75 moles of sodium chloride in enough water to produce a solution of 6.22l. 2. You have a sample which consists of 428g sodium

asked by David on January 10, 2017
42. ## math

2/3 over 10 equals 1.8/r solve for r. (2/3)/10 = 1.8r. First, invert and multiply the denominator; i.e.,10. (2/3)*(1/10) = 1.8/r 2/30 = 1.8/r Now cross multiply. 2r = 30*1.8 2r = 54 Now divide both sides by 2 2r/2 = 54/2 r = 27 check my thinking. check my

asked by sandy on August 19, 2007
43. ## Help, Math.

Solve: 3e2x + 2 = 50 a. ln 8 b. ln 0.25 c. ln 14 d. 0.5ln 16 --------- Solve: 1 = 7 ex a. ln 1/7 b. ln 1/7 c. ln 7 d. ln 7 ------------ Solve: e3x = 8 a. ln 5 b. 3 ln 8 c. ln 8 3 d. ln 3 8 ---------- ln 1 √ e a. -√e b. -1 2 c. 1 e d. 1 2

asked by Holly on May 21, 2013
44. ## Math Check

Hi! Can someone check this for me? My teacher wants me to write the system of equations that will correspond to the final matrix. I have the matrix already, but I need help with the writing the system stuff. Thanks! Matrix: [-10 2 | 48] [-5 -6/4 |-9] My

asked by Yuri on March 24, 2015
45. ## English

I left out these other sentences. Thank you very much, Writeacher. 1) If I'm lucky, I'll work at a passion and at the same time at a career. I think that a good job is a job that you love and that permits (?) you to do the things you are keen on. 2) I have

asked by Matthew on April 12, 2012
46. ## Physics

A 2.2-kg baseball is pitched to you at 21 m/s. You hit the ball back along the same path, and at the same speed. If the bat was in contact with the ball for 0.17 s, what is the magnitude of the average force the bat exerted on the ball? Please show all

asked by Selina on July 7, 2013
47. ## statistics

Suppose we have a set of body temperatures with a mean of 98.6 degrees, and a sample standard deviation of 1.0 degree. Assuming a normal distribution of body temperatures in the larger population, between what two values should 95% of all temperatures lie?

asked by Anonymous on September 29, 2012
48. ## Finance

One year ago, you bought a bond for \$10,000. You received interest of \$400 at the end of the year, as well as your \$10,000 principal. If the inflation rate over the last year was five percent, calculate the real return. Show your work.

asked by ky on April 28, 2011
49. ## Economics

One year ago, you bought a bond for \$10,000. You received interest of \$400 at the end of the year, as well as your \$10,000 principal. If the inflation rate over the last year was five percent, calculate the real return. Show your work

asked by Tracey on October 19, 2010
50. ## science

space craft is heading towards the sun which is located 150,000,000 km. away from earth at a speed of 17,000 km, per hour. what is the approximately to the nearest year how long will it take to arrive at the sun's surface? show work

asked by Anonymous on March 29, 2016
51. ## math-geometry

The sum of the radii of two concentric circles is 40. A chord with length 36 of the larger circle is trisected by the smaller circle. The area of the smaller circle is k*pi. Find the value of k. Express your answer as an exact decimal. Please show work.

asked by paragon on January 17, 2008
52. ## math/probability

For some reason I can not get my head around probability. Please show me how to work the problem not just the answers. A class has 11 students who are to be assigned seating by lot. What is the probability that the students will be arranged in order from

asked by Jaime on July 24, 2010
53. ## Chemistry

A 6.8 g sample of metal pellets is placed into a graduated cylinder holding 7.1 ml of water. After the pellets are added, the water level stands at 9.30 ml. Determine the density of the pellets. (show all work) I've tried 6.8 g / 9.30 ml and .97-.71 to get

asked by Mal on September 4, 2014
54. ## Math

I need to show work for this but I don't know how. Erik wants to form 4-digit integers using only the digits 1, 2, 3, and 4. He is allowed to repeat digits. What is the probability that he forms a 4-digit integer where at least one digit repeats? Express

asked by Becky on October 3, 2016
55. ## physics. I waited over two days for response

An 800kg police boat slows down uniformly from 50km/h (E) to 20km/h(E) as it enters a harbour. If the boat slows down over a 30m distance, what is the force of friction of the boat? (Hint: you will need to convert the velocities into m/s) please show your

asked by Anonymous on November 23, 2014
56. ## Economics

One year ago, you bought a bond for \$10,000.00. You received interest of \$400.00 at the end of the year, as well as your \$10,000.00 principal. If the inflation rate over the last year was five percent, calculate the real return. Show your work.

asked by Tracey on January 28, 2012

There are 112 seats in the school auditorium. There are 7 seats in each row. There are 70 people seated, filling up full rows of seats. How many rows are empty? We added and got 189 then divided by 3. But it doesn't look correct. How do we show the work?

asked by Ali on February 1, 2015
58. ## Physics

how much work is required to lift a 98-N block of ice if A) it is lifted a vertical distance of 5-m.? B) you push the same block of ice up a 7-m long ramp using in acompare to the work required in b.? C) How does the work required in A compare to the work

asked by Tyler on November 7, 2010
59. ## Math

1. Which ordered pair is a solution of the equation y = −11x + 4? a. (0, -7) b. (-1, -7) c. (1, -7) d. (2, 26) MY ANSWER: C Because (X,Y) so -11x = -11 * 1 = -11 -11 + 4 = -7 2. A plumber charges \$65 per hour to fix a leak. What is an equation that

asked by Sp on September 18, 2017
60. ## calculus

1.Solve the differential equation dy/dx= y^2/x^3 for y=f(x) with the condition y(1) = 1. 2.Solve the differential equation y prime equals the product of 2 times x and the square root of the quantity 1 minus y squared. Explain why the initial value problem

asked by Anonymous on April 28, 2015
61. ## Algebra

Can you please check my work? You have helped other students I know. Thank you:) Multiply -7(2a2 -4) = -14a2 + 28 Multiply 0.5(a + b -5) = 0.5a + 0.5b - 2.5 Factor bx - by + bz = b(x - y + z) Combine like terms (simplify) 12x + 4 - 11y - 6x - 9 - y = 6x -

asked by Sharon (ms. Sue) on November 8, 2011
62. ## English Improving writing

Below is what I have to do for English It is very confusing to me General Instructions Single –space your prewriting, but double space your drafts. After preparing a rough draft read the evaluation criteria and revise your work carefully, correcting any

asked by Kaleigh-Anne on June 8, 2008
63. ## macroeconomics

1. Consider the economic situation in the U.S since 2008 and discuss how supply side and demand side economic may be used to solve the current problems. Also, explain why you believe that these two approaches may or may not work. 2. Provide a numerical

asked by patricia on December 18, 2012
64. ## Macroeconomics

1. Consider the economic situation in the U.S since 2008 and discuss how supply side and demand side economic may be used to solve the current problems. Also, explain why you believe that these two approaches may or may not work. 2. Provide a numerical

asked by patricia on December 18, 2012
65. ## chemistry

The pH or acidity of liquid is measured in pH, where pH is given by the equation pH=- log C, with C being the concentration of [H+] in multiples of M=1mol/L. Suppose you are given a solution of hydrochloric acid with a pH of 1.7 and asked to increase the

asked by Sara on March 30, 2017
66. ## Chemistry

A sample of 8.00 L of NH3 (ammonia) gas at 22 degree Celsius and 735 torr is bubbled into a 0.500 L solution of 0.400 M (hydrochloric acid). The kb value for NH3 is 1.8 x 10^-5. Assuming all the dissolves and that the volume of the solution remains at

asked by Linda on April 24, 2009
67. ## math

The pH or acidity of liquid is measured in pH, where pH is given by the equation pH=- log C, with C being the concentration of [H+] in multiples of M=1mol/L. Suppose you are given a solution of hydrochloric acid with a pH of 1.7 and asked to increase the

asked by Sara on March 30, 2017
68. ## Algebra 2

Solve the system, 4x^2 + y^2 = 20 and y = 4x. (square root of 10/2, 2 square root of 10)?

asked by Lily on May 17, 2013

You are a technical writer in a large company, working on a training manual to help new users learn the company's computer system. Employees will use your manual in training seminars taught by your company's trainers. the manual will aslo serve as an

asked by Anonymous on March 31, 2009
70. ## Chemistry 2 Lab

Calculate the degree of ionization of acetic acid in solution 1 through 3? All I am giving is the pH... pH of solution 1= 3 pH of solution 2= 3.5 pH of solution 3= 5 Then, I did this... HC2H3O2 (aq) + H2O (l) equals H3O+ (aq) + C2H3O2- (aq) Ka= 1.7 E -5

asked by Robby on March 19, 2013
71. ## chemistry

The concentration of a certain ionic compound in aqueous solution is 0.186mol/L . It is only solute in the solution. The concentration of pottassium ions in the same solution ia 0.558mol/L. Explain why the concentrations of the ions in the solution are

asked by Deepa on February 14, 2013
72. ## Chemistry

A 5.00-mL sample of an H3 PO4 solution of unknown concentration is titrated with a 0.1003 M NaOH solution. A volume of 6.55 mL of the NaOH solution was required to reach the endpoint. What is the concentration of the unknown H3 PO4 solution?

asked by Amee on March 11, 2013
73. ## math

Your business provides a service to local residents. Your fixed costs are \$2,000 per month, and you expect 40 customers per month. The variable cost associated with each service is \$35. 1. Using cost-based pricing and a markup of 20%, what should the price

asked by catgirl on February 25, 2015
74. ## Physics

we must apply a force of magnitude 82.0 N to hold the block stationary at x=-2.0 cm. From that position, we then slowly move the block so that our force does +8.0 J of work on the spring–block system; the block is then again stationary. What are the

asked by Shawna on November 4, 2009
75. ## social studies

What challenges must Cyprus overcome to reunify? Explain your ideas about this topic and suggest ways that Cyprus could work to solve its challenges of diversity.

asked by Anonymous on November 10, 2015
76. ## Math

Use the law of cosines to solve ABC with A=126.3, b=45, and c=62.5 I did all the work to find a but my problem is finding B a=96.2 Sin(B)=45sin126.3/96.2 B=Sin^-1(45sin126.3/96.2) It's not going through in my calculator

asked by House on October 2, 2008
77. ## SS help connections academy

What challenges must Cyprus overcome to reunify? Explain your ideas about this topic and suggest ways that Cyprus could work to solve its challenges of diversity.

asked by Ttng on November 6, 2015
78. ## math

alexander had some nickles in his bank. he added 3 dimes to the bank and then he had 85 cents.how many nickles did he have left? write an equation and work backward to solve.

asked by hanna on November 6, 2007
79. ## Algebra

Can someone please help? I have to solve.... An employee produces x units per hour earns an hourly wage of y = 0.50x + 11 (in dollars.) What is the wage? How many hours does the employee work?

asked by Steve on August 16, 2007
80. ## Social Studies

What challenges must Cyprus overcome to reunify? Explain your ideas about this topic and suggest ways that Cyprus could work to solve its challenges of diversity.

asked by Anonymous on October 28, 2014
81. ## math

in a hall tv runs from hours and 4 tube lights work n hours each frame an equation if the total number of units consumed is 4.8 find 3 solution of this equation

asked by faisal on April 2, 2016
82. ## calc

analyze the function ln x = cx^2 to find the unique value of c such that there is exactly one solution to the equation. to do this, find the value of c such that both sides of the equation have equivalent slopes at some point; this will give you a proper

asked by Gabriela on December 14, 2010
83. ## Calculus AB

Analyze the function ln x=cx^2 to find the unique value of c such that there is exactly one solution to the equation. To do this find the value of c such that both sides of the equation have equivalent slopes at some point; this will give you a proper

asked by jessica on December 13, 2010
84. ## Texas Government

Please tell me which one of these is Federal , Confederal or Unitary . I have already submitted my question but I just want to be sure. ____1..In this system, power is divided between a central government and sub-government. ____2. England ____3. The

asked by Sarah on September 6, 2011
85. ## chemistry

A 2.5 g sample of NaOH (Mw = 40.00) was dissolved in water to give a solution of final volume 250 cm3. (i) With reasons, state whether NaOH is a strong or a weak base. Give the conjugate acid of NaOH and decide whether this conjugate acid is acid, alkaline

asked by LUx on April 21, 2013
86. ## algebra

From her house, Mary travels to New York at an average rate of 50 miles per hour and then returns home at an average rate of 32 mph. After taking 2 hours longer on the return trip than the time it took her to get to New York,she finds that she still has 17

asked by Mia on January 26, 2011
87. ## math

Still looking at how to solve these... Both are cubic polynomials? 43x^3 + 13x^2 + 18x - 456 = 0 DO I divide first by x-1? 2x(3x+2)^2=312 Honestly: I would graph the equations and find the roots first. I don't see them off hand. graph y=43x^3 + 13x^2 + 18x

asked by mary on January 21, 2007
88. ## Algebra 2

A sound wave is modeled with the equation . y=1/4cos 2pi/3treta a. Find the period. Explain your method. b. Find the amplitude. Explain your method. c. What is the equation of the midline? What does it represent? A- The period can not be found because

asked by Ciaria on March 31, 2015
89. ## Physics

A lot of mass m2 = 28 kg hanging from a rope. The rope runs over a frictionless pulley and attached to a box of mass m1 = 52 kg. The box is on a plane with endpoints in A. Oblique Planet either by angle v = 180 in relation to the horizontal. The friction

asked by Oddbjørn on December 12, 2010
90. ## math

If 1/2 of a number, 1/3 of the number, 1/4 of the number, and 2/7 of the number are added together, the sum is 575. What is the number? Please show steps/work.

asked by Bailie on February 4, 2013
91. ## College Algebra

Please Explain your reasoning Part 1: Suppose that the number of new homes built, H, in a city over a period of time, t, is graphed on a rectangular coordinate system where time is on the horizontal axis. Suppose that the number of homes built can be

asked by Vision/Help! on November 3, 2007
92. ## physics

A racing car reaches a speed of 40 m/s. At this instant, it begins a uniform negative acceleration, using a parachute and a braking system, and comes to rest 5.0 s. (a)Determine the acceleration of the car. Work: 40m/s x 5s = 200m (0)^2=(40)^2 +2a(200)

asked by Anonymous on September 7, 2007
93. ## Maths

Dear Genius, Good day! The number of apples in a basket is between 60 and 120. If i put these apples into bags of 5, there will be a remainder of 1 apple. If i put these apples into bags of 8, there will be a remainder of 6 apples. Find the total number of

asked by Surya on February 23, 2012
94. ## Finance

A wealthy donor endows a chaired professorship. If the interest rate is 8% how much must he set aside to provide the following end of year salary payment alternatives? a. \$100,000 per yr for 20 yrs b. \$100,000 per yr in perpetuity c. A perpetuity that pays

asked by Joe on October 20, 2006
95. ## physics

two forces 20N each are inclined at 100 degree to each other.find the single force that will; replace the given force system balance the given force system

asked by rezny on January 16, 2013
96. ## algebra

A rental truck costs \$50 plus \$0.40 per mile. Write an equation that gives the cost of driving the truck x miles Use the intersection of graphs method to determine the number of miles that the truck is driven if the rental cost is \$70. Solve part (b)

asked by Dee on February 13, 2016
97. ## chem

A standard solution is prepared for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid. A stock solution is first prepared by dissolving 13.0 mg of fluoxymesterone in enough water to give a total volume of 500.0 mL. A 100.0 µL aliquot

asked by mel on November 4, 2007
98. ## chemistry

A 3.75-G SAMPLE OF IRON ORE IS TRANSFORMED TO A SOLUTION OF IRON(II)SULFATE, FeSO4,AND THIS SOLUTION IS TITRATED WITH 0.150 M K2Cr2O7. IF IT REQUIRES 43.7 mL OF POTASSIUM DICHROMATE SOLUTION TO TITRATE THE IRON(II)SULFATE SOLUTION, WHAT IS THE PERCENTAGE

asked by malissa on October 23, 2012
99. ## chemistry

A standard solution is prepared for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid. A stock solution is first prepared by dissolving 13.4 mg of fluoxymesterone in enough water to give a total volume of 500.0 mL. A 100.0-µL aliquot

asked by quincy on November 26, 2013
100. ## Maths

The number of apples in a basket is between 60 and 120. If i put these apples into bags of 5, there will be a remainder of 1 apple. If i put these apples into bags of 8, there will be a remainder of 6 apples. Find the total number of apples in the basket.

asked by Surya on February 15, 2012