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 202
1. Forgot my book, need science help!!

Please help me I have a whole section to do over the weekend and I forgot my book! Please help!! You'll need to post a question in order for a science teacher to know what kind of help you need. Biology? Chemistry? What? And what is/are the question(s)?

asked by Linz on August 20, 2005
2. Computer

Need help with small visualization work. Only contact if you know how to use google visualization tools. Please do not spam if you don't know how to do it. Final budget is 15 USD and will be paid after satisfactory verification of work. kgill1945 @ gm dot

asked by kgill on February 11, 2016
3. Physics

Describe 4 everyday situations where mechanical energy is approximately conserved because work done by the non-conservative forces is ignorable. Please mention which non-conservative force is doing negligible work in each case you cite. Thank you!

asked by Jasmin on November 14, 2011
4. math

write an expression using n as the variable for this problem. each day julia rides her bike to and from work. she lives 9 blocks from work and burns 13 cal. per block. how many cal. does she burn in n days

5. Physics

Do you think that power generated by the electric company means the same thing as the power as explained in this lesson (meaning work over time)? Why or why not? My teacher gave a hint to "Think about each in terms of the amount of work done" Please help!

asked by Nathaly on November 30, 2016
6. AP Chemistry

A mixture of 20.0 grams of CaO and BaO is placed in a 12.5 L vessel at 200oC with excess CO2 . The mixture is allowed to react to completion forming CaCO¬3 and BaCO3 .The pressure in the container after reaction is 220 torr. The solid carbonates are

asked by Jim on January 2, 2015
7. Social Studies

Discuss the validity of the following quotation: "The British imperial economic system, including mercantilism, exploited the American colonists and offered them few benefits. As such it represented a valid reason for revolution."

asked by Question on January 31, 2007
8. Art

1) How did francisco goya caricature to depict the figures in contemptuous of the insults? :The facial features of the frenchmen are exaggerated to show their confusion :The frenchman's hats are comically large to show their self importance :The frenchmen

asked by External Memory on February 11, 2015
9. math

in a triangle,the largest angle is 29 degrees more than the smallest.The third angle is 13 degrees larger than the smallest. What is the smallest angle in the triangle?What kind of triangle is it? and show work please.

asked by kayla on October 14, 2010
10. Chemistry

Explain the following observations using chem principles: When table salt and sugar are dissolved in water, it is observed that: 1. Both solutions have a higher boiling point than pure water. 2. the boiling point of .1 M NaCl solution is higher than that

asked by Anonymous on January 17, 2008
11. Chemistry

A laboratory technician is required to prepare a quarter normal saline solution (0.22% w/v) from the stock normal saline solution. 1. What is the dilution factor required? I have 4-fold dilution - is that correct? 2. Ise this dilution factor to calculate

asked by Korina on December 14, 2010

Leslie has been offered the choice of either a $1,000 rebate or a 5.5 percent, 48-month loan for the new car she is purchasing. If Leslie will be financing$15,000 and she can get a 7.5 percent, 48-month loan at her credit union, should she take the $1,000 asked by Steven on August 5, 2012 13. algebra The equation h = -16t^2 + 112t gives the height of an arrow, shot upward from the ground with an initial velocity of 112 ft/s, where t is the time after the arrow leaves the ground. Find the time it takes for the arrow toreach a height of 180 ft. put in asked by jamie on July 18, 2007 14. chemistry need help with a question calculate the concentration of grams of sodium stearate per milliliter of diluted solution. To do this, multiply the concentration of sodium stearate in the dishwashing liquid by the dilution of the solution(1.50 ml dishwashing asked by Lacy on June 14, 2017 15. Chemistry 1. Write the balanced equation. Use ONLY this equation to reference how the reactions below will shift. Consider whether there is an addition, a removal, or no effect to the reaction. Co(H2O)6^2+ + 4Cl^- CoCl4^2- + 6H2O 2. Write the equilibrium expression asked by Kate on January 28, 2015 16. 7th grade math (probability) 1. Cmdr's coffee shop offers a coffee special with coffee syrups of vanilla, chocolate, and caramel. You can also choose between a latte, and cappuccino. How many different coffees can you make for the special? Ans: 6 (VLatte, ChocLatte, CLatte; VCap, asked by Alexis on May 5, 2015 17. GenChem II What mass of CsBr must be added to .500L of water to produce .4molality solution? What are mole fraction and mass percent? Here is my work and below I will post a question about it: 1 mol CsBr = 212.81g density of water = 1g/mL d=mv 1=x/500 x=500g of water asked by Chem on February 18, 2010 18. Science Which of the following boxes below represent a stable system? Describe how a disturbance to this box would affect it. Use the terms center of mass and equilibrium in your response. Box A: Shaped like a diamond on a flat surface with an arrow pointing asked by Anonymous on March 14, 2017 19. Calulus/Optimization I don't understand how to solve optimization problems, (like here's the volume of a box, find the least amount of material it would take to make such a box). Is there a tutorial or some general step by step instruction on how to do these? Thanks in asked by Amy on April 1, 2007 20. chemistry Hi, can you tell me what the valency of Aluminium and Selenium? hi i was going to pose that question im glad you did are you doing s103 by any chance Al is in group IIIA (or 3) depending upon the system you are using; therefore, it has three electrons in asked by Angelika on January 31, 2007 21. World History Which examines the impact of Napoleon’s territorial conquest on the world? (1) Unification of the Rhine created a new European imperial power in Africa. (2) The establishment of the Napoleonic code allowed for the codification of natural resources. asked by Jean on January 13, 2019 22. Social Studies Who's job is it to line up the votes of the members of the party that holds the most seats in a chamber? A) president pro tempore B) Speaker of the house C) Minority whip D) majority whip **** The president of the Senate also serves as the _____? A) Head asked by Rebecca on January 19, 2017 23. math A rubber band is stretched around the four circles (each with radius r cm). i) Show that the total length of the rubber band is given by the expression r(8+2π)cm. ii) Show that the area of the shape is given by the expression r^2(12+π) cm^2 asked by anonymous on February 15, 2018 24. math A rubber band is strung around six circles (each with radius r cm). a) Show that the area of the shape is given by the expression r^2(12+6√3+π). b) Show that the total length of the rubber band is given by the expression 2r(6+π). asked by anonymous on February 19, 2018 25. Chemistry Consider a 9% by mass aqueous ethyl alcohol solution. a.) Calculate the molality of this solution_____m b.) Given that ethyl alcohol is a molecular solute, calculate the freezing point of this solution. ________ degrees Celsius. c.) Consider the boiling asked by amber on June 24, 2014 26. MATH The life cycle cost of the BLUEBIRD system is$600 million. The program acquisition cost is $400 million and the development cost is$150 million. There are no facilities costs. What is the procurement cost of the BLUEBIRD system? $200 million$150 million

asked by CHUCK on March 18, 2013
27. Physics

Two People who weigh the same climb a flight of stairs. The 1st person climbs the stairs in 30s, and the 2nd person climbs them in 40s. Which person does more work? which uses more power. - I would personaly think the 2nd person does more work and power

asked by Lee on November 15, 2010
28. Physics

Two People who weigh the same climb a flight of stairs. The 1st person climbs the stairs in 30s, and the 2nd person climbs them in 40s. Which person does more work? which uses more power. - I would personaly think the 2nd person does more work and power

asked by Lee on November 15, 2010
29. Physics/Math

What work is done by a force (in newtons) F = 3.1xi + 3.1j, with x in meters, that moves a particle from a position r1 = 2.1i + 2.5j to r2 = - -4.9i -3.9j? Work is the dot product of Force and displacement. Change in displacement is r2 minus r1. I will be

asked by Technoboi11 on March 1, 2007
30. math

Alyssa is enrolled in a public-speaking class. Each week she is required to give a speech of greater length than the speech she gave the week before. The table below show the length of several of her speeches: WK #/Length of Speech (seconds) 3/150, 4/180,

asked by Jane on April 29, 2013
31. English II B

Deana created a computer-assisted slide show. To make the slide show legible, what is one thing she needs to avoid? A)typing bullets in a small font B)adding color and effects to the font C)printing handouts on paper D)adding tables and graphics

asked by Mike on April 3, 2014
32. Math Statistics

N= 80 p = 0.7 x = 62? A) Exact: 0.0335; Approximate: 0.0334 B) Exact: 0.0343; Approximate 0.0334 C) Exact: 0.0343; Approximate: 0.0350 D) Exact: 0.0343; Approximate: 0.0342 Which one is the correct answer and can you show work please?

asked by Anonymous on November 15, 2016
33. math

Judd paid 182 dollars for a thermos, a blender, and a microwave. The blender cost 35 more dollars than the thermos. the microwave cost 65.50 more than a blender. Find the cost of the blender? please show your work.

asked by lidia on November 3, 2012
34. calculus

find the distance d (P_1 & P_2) between points P_1 and P_1. P_1=(-3,3) P_2=(1,5) Find the midpoint of the line segment joining the points P_1 and P_2. P_1=(1,1) P_2=(-3,3) Please show all work

asked by spazed out on December 4, 2012
35. Math

Tom buys a shirt for $22.00 plus 7% sales tax. His cousin buys a shirt for$18.00 plus 4% sales tax. a. How much do Tom and his cousin pay for the shirts? Show your work. b. Who spent more on tax? Please Help Me!!

asked by X( on December 27, 2012
36. history

What is the significance of Alexander Hamilton's financial program? How did Hamilton's financial program play a role in the creation of a two-party political system? My response to the first was that he wanted to increase the nations finances and to make

asked by m on March 2, 2011
37. chem

1) When a mixture of potassium chlorate and an appropriate catalyst is heated in an open test tube, potassium chloride and oxygen gas are produced. This reaction is not reversible, because a. the system reaches equilibrium b. the reaction does not go to

asked by HEATHER on February 1, 2012
38. Physics

In procedure 1: suppose the hanging mass is mH = 203 g and the mass of the cart is mC = 1286 g. a) Assume there is no friction anywhere in the system, and the system starts at rest. i. Find the magnitude of the acceleration of the masses. a = m/s2 ii. Find

asked by Sara on July 10, 2015
39. physics

Two 2.3 kg balls are attached to the ends of a thin rod of negligible mass, 65 cm in length. The rod is free to rotate in a vertical plane about a horizontal axis through its center. With the rod initially horizontal as shown, a 44 gm wad of wet putty

40. math

Can someone check my math homework? I have to set up an equation... my math teacher said that I didn't show how I set up the equation. can someone show me how to do that please? My work is under the question. 7. Anne is seven years younger than her

asked by Abby on September 23, 2015
41. math

Can someone check my math homework? I have to set up an equation... my math teacher said that I didn't show how I set up the equation. can someone show me how to do that please? My work is under the question. 7. Anne is seven years younger than her

asked by Abby on September 22, 2015

A rocket is fired vertically from the ground with a resultant vertical acceleration of 10ms^-2. The fuel is finished in 1 minute and it continues to move up. What is the maximum height reached? Solve it!!! N Please solve it as i've to copy it in my

asked by Akashdeep Singh on July 22, 2010
43. SCIENCE

Which of the following statement is true for projection mode of lithography? As effect of diffraction of light is more, it requires highly optimized optical system for projection The optical image of a mask can be scaled down maximum up to 2X to 3X by

asked by MEMS on August 27, 2018

Please, explain why do you think that blowout preventer (BOP)was likely a hydraulic system (in the 2010 Deep Water Horizon oil spill accident), and what are the advantages and disadvantages of this hydraulic system in the Deep Water Horizon oil spill. Give

asked by mark on May 23, 2013
45. physics

Three objects lie in the x, y plane. Each rotates about the z axis with an angular speed of 4.44 rad/s. The mass m of each object and its perpendicular distance r from the z axis are as follows: (1) m1 = 6.00 kg and r1 = 1.00 m, (2) m2 = 4.50 kg and r2 =

asked by Anonymous on April 22, 2014
46. science, temperature, thermometer

the thread of mercury in a thermometer is 17cm when placed above boiling water, and 9cm when dipped in melting ice. how long would the thread of mercury become if placed in a liquid with a temperature of 75 degree celsius. is there a method or formula for

asked by minerva on January 17, 2007
47. University of Phoenix

Class, this week your individual assignment is to write a paper on Technology and Communication. Your essay should be between 1,050- to 1,750-words and should explain how technology has affected the communication capabilities of specialized databases in

asked by silka on February 15, 2013
48. Physics

Hello, I posted this a bit ago, but am not sure the suggested solution was correct. Two physical pendulums (not simple pendulums) are made from meter sticks that are suspended from the ceiling at one end. The sticks are uniform and are identical in all

asked by Anonymous on November 7, 2011
49. Math

A glass is filled with water and the total weight is 220g. If the glass is halffilled with water, the total weight is 120g. What is the net weight of the glass? There may be a logic way of doing it but the following is the longer "math" way. G = weight of

asked by Anonymous on March 31, 2007
50. algebra

Please check these too. thanks Simplify 6[86-(94-86)]= my answer is 468 2. On three consecutive passes, a football team gains 6 yards. loses 17 yards and gainbs 31 yards. Wht number represents the total net yards. The total net years is 20 yards. 3. Solve

asked by babs on August 3, 2011

Island Builders, Inc., has consistently used the percentage-of-completion method of accounting for construction type contracts. During 2004 Island Builders started work on a $9,000,000 fixed-price construction contract that was completed in 2006, Island asked by cyndi on December 11, 2010 52. Algebra (Note): Hello! I am really stuck on this problem and am trying to figure out how to solve it! I don't want the answer, I just want to know how to solve an equation like this: Consider a sequence whose first five terms are: -1.75, -0.5, 0.75, 2, 3.25 Which asked by Amelia on March 12, 2019 53. Parabolas in standard form! Hello, I am having the worst time trying to solve these parabolas and putting them into x-h = a(y-k)^2 form. :( There are two problems that i keep doing something wrong. could someone solve them so I can have a set up for the rest of my problems? :) asked by Kate on May 24, 2012 54. arithmetic brandy wants to buy a digital camera that costs$300. supposeshe saves $15 each week, in how many weeks will she have enough money for the camera? use a bar diagram to solve arithmetically, then use an equation to solve algebraically asked by Anonymous on March 27, 2018 55. Calculus A tank contains 2920 L of pure water. A solution that contains 001 kg of sugar per liter enters a tank at the rate 4 L/min The solution is mixed and drains from the tank at the same rate. (a) How much sugar is in the tank initially? (b) Find the amount of asked by Javier on May 22, 2012 56. accounting Sherrod, Inc., reported pretax accounting income of$89 million for 2006. The following information relates to differences between pretax accounting income and taxable income: Income from installment sales of properties included in pretax accounting income

asked by Steve on March 28, 2008
57. Computer Programming

Implement the classic “Rock, Paper, and Scissors game” using following methods: Headers of the methods are shown public static void printMenu( ) It is a void method –It uses no parameters --It is called to display choices and code (1 for Rock, 2 for

asked by Nathan on November 14, 2013
58. aig math

The ratio of Tim's marbles to Joe's marbles to Matt's marbles is 8 : 6 : 9. If Tim and Joe have 84 marbles altogether, how many marbles does Matt have? Show your work please?

asked by lidia on March 25, 2013
59. math(Ms.Sue)

The ratio of Tim's marbles to Joe's marbles to Matt's marbles is 8 : 6 : 9. If Tim and Joe have 84 marbles altogether, how many marbles does Matt have? Show your work please?

asked by lidia on March 25, 2013
60. algebra

If y=35+0.8x gives the distance of the sports car from Flint after x minutes. find the following a. How far is the sports car from Flint after 25 minutes? b.How long will it take until the sports car is 75 miles from Flint? Show how to find the solution

61. Chemistry Lab

Hi, I'm doing a lab with acid-base indicators and I'm utterly confused. The lab procedure goes like this: 1) Make your own indicator. 2) set up 12 test tubes and pout a little pH solution into tube. 3) add 4 drops of indicator into each test tube. 4)

asked by ConfusedStudent on February 27, 2013
62. Algebra II

PLEASE HELP ME WITH ALGEBRA II project!? Equipment: Tape Measure Purpose: The purpose of this lab is to practice multiplying, dividing, adding, and subtracting polynomials with a purpose in mind. I know this business trip will take valuable time, but it

asked by yakime on June 22, 2010
63. Math

check my work please For his business, Gil has determined that the time it takes to ﬁnish a job varies inversely with the number of workers. This can be expressed as: ==\ensuremath{T=\frac{k}{w}}== where T = time, k is a constant, and w = number of

64. College Algebra

Value of Computer Software The value V, in dollars, of a shopkeeper's inventory is software program is given by V=-50t + 300, where t is the number of years since the shopkeeper first bought the program. SHOW YOUR WORK for a and c. a) Find the value of the

asked by Anonymous on September 4, 2011
65. physics

A dockworker loading crates on a ship finds that a 20 kg crate, initially at rest on horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 60 N is required to keep it moving with a constant speed. Find the

asked by Anonymous on October 14, 2007
66. Chemistry

Which of the following statements about boiling points are false: A. the boiling point of 0.1 m KF(aq) is lower than the boiling point of 0.1 m ethanol(aq) B. the boiling point of a 0.5 m aqueous solution of NaOH is the same as the boiling point of a 0.5 m

asked by Timothy on September 8, 2010
67. math

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Use the circle graph shown below to answer the question. A pie chart labeled Favorite Sports to Watch is divided into three portions. Football

asked by Agent no one on January 15, 2019
68. human service

Locate three professional business groups that are reputable in your chosen field (example: social work field has the National Association of Social Workers, Clinical Social Work Association, Association of Social Work Board). State whether or not they

asked by Patiance on November 7, 2011
69. Chem

a) An ethylene glycol solution contains 21.1 g of ethylene glycol in 86.0 ml of water. compute the freezing point of the solution. b) Compute the boiling point of the solution.

asked by Emilene on March 13, 2011
70. Edited questionSCIENCE

Speeds up or slows down? By stirring a gas in a liquid, its solubility ____________ the dissolving process. High or low? A gas's solubility is is faster in a liqud when under __________ pressure. How do the methods of speeding the rate of solution for

asked by Twilight lover on March 10, 2009
71. chemistry

2H2O2 --> 2H2O +O2 If a 250mL bottle of hydrogen peroxide solution containing 3% H2O (by mass) completely decomposed how many liters of gas would it generate. Assume that one mole of gas occupies a volume of 22.4 L and that the density of the solution is 1

asked by Anonymous on October 6, 2009
72. chemistry

A 125.0 mg sample of an unknown, monoprotic acid was dissolved in 100.0 mL of distilled water and titrated with a 0.050 M solution of NaOH. The pH of the solution was monitored throughout the titration, and the following data were collected. Determine the

73. chemistry

the much used drug cocoaine is an alkaloid. Alkaloids are noted for their bitter taste, and indication of their basic properties. Cocaine, C17H21NO4 is soluble in water tot he extent of 0.17 g/100 ml solution, and a saturated solution has a pH of 10.08.

asked by Symone on December 5, 2010
74. chemistry step by step thank a lot

Al2(s04)3 solution of a molal concentration is present in 1 litre solution of 2.684g/cc. How many moles of bas04 would be precipitated on adding bacl2 in excess? the answer 6M Who helps me step by step for me clearly I am thankful to all tutors

asked by ken on July 11, 2014
75. o chem

Impure acetanilide was dissolved in the required amount of hot water. The clear solution in a beaker was immediately placed in an ice-water bath, instead of being allowed to cool down slowly. What would be the result of cooling the solution in this manner?

asked by happy on October 18, 2013
76. Chem

Depending upon the tip of a dropper pipet, there are approximately 20 drops per milliliter of water. The experimental procedure indicates the addition of 5-10 drops of each solution to the test tubes. Calculate the volume range in milliliters for the

asked by Robert on October 10, 2015
77. Chemistry

A 1.00% by mass MgSO4(aq) solution has a freezing point of -0.192°C. (a) Estimate the van't Hoff i factor from the data. (b) Determine the total molality of all solute species. (c) Calculate the percentage dissociation of MgSO4 in this solution. Can

asked by Daiyo on December 10, 2010
78. Qualitative analysis

A solution reacts with calcium carbonate to produce a gas. It does not produce a precipitate with either aqueous barium chloride or acidified silver nitrate. Which of the following does the solution contain? A HI B H2S04 C HNO3 D HCl Could someone explain

asked by Cheezel on November 17, 2016
79. Chemistry

Suppose you tired to carry out a double-replacement reaction by mixing together equal volumes if a solution that contained dissolved NaF and a solution NaCl. Would you expect a reaction, if Si write the balanced chemical equation

asked by Lou on April 25, 2011
80. chemistry

Indicate the concentration of each ion present in the solution formed by mixing the following. (Assume that the volumes are additive.) (a) 50 mL of 0.100 M HCl and 10.0 mL of 0.510 M HCl (b) 15.0 mL of 0.309 M Na2SO4 and 38.6 mL of 0.200 M KCl (c) 3.50 g

asked by Anonymous on September 21, 2011
81. Math

How much of 20% alcohol solution and 50% alcohol solution must be mixted to get 9 liters of 30% alcohol solution?

asked by BoB on July 27, 2011
82. math

when we mix a 10% acid solution with a 14% acid solution, we can obtain a solution that is 24% acid

asked by Sheena on June 13, 2012
83. math

How much of 20% alcohol solution and 50% alcohol solution must be mixted to get 9 liters of 30% alcohol solution?

asked by terry on November 9, 2015
84. math

A nurse has a 30% alcohol solution and an 80% alcohol solution. He needs 10L of a 40% alcohol solution.

asked by Caitlyn on November 3, 2017
85. Algebra

For the first phase of the project, imagine you want to cover the backyard with decorative rock and plant some trees. You need 30 tons of rock to cover the area. If each ton costs $60 and each tree is$84, what is the maximum number of trees you can buy

asked by Kimmie on December 23, 2010
86. Math (combination/permutation)

Question 1: There are 12 students in a class. Find the number of ways that 12 studenets can take 3 different tests if 4 students are to take each test. Question 2 Find the number of ways 12 students can be partitioned into 3 teams A, B, C, so that each

asked by Cynthia on December 30, 2010
87. motion analysis

5. (a) Using the information below estimate the time required to analyse the data collected using the two motion analysis systems when there are 10 markers on the subject and the data is collected for 100 frames. Cinematography system 2 seconds per marker

asked by arzam on December 30, 2013
88. motion analysis

5. (a) Using the information below estimate the time required to analyse the data collected using the two motion analysis systems when there are 10 markers on the subject and the data is collected for 100 frames. Cinematography system 2 seconds per marker

asked by arzam on December 29, 2013
89. Algebra II

Solve each equation. Check for extraneous solutions. Solve:|x+5|=3x-7 My answers were: x=6 and x=.5 I don't think they are right though, but I should get 2 answers right???....Help!

asked by Attalah on February 8, 2011
90. Geometry

Hello! I'm not really sure how to solve this question, and I was wondering if I could have some assistance on how to solve it? Any help it appreciated! Thanks! Question: What is the exact value of cos 30°?

asked by Savannah on April 27, 2018
91. math

Solve it... [ ] [ ] [ ] = 30 fill the brackets using below numbers ( 1, 3, 5, 7, 9, 11, 13,15 ) you can repeat the numbers... Please help me! Many more people unsucceed to solve it

92. calculus

can you pleaaaaase help me find the area between y=cos(4x) and y=1-cos(4x) 0

asked by aymal on May 1, 2010
93. maths

how would i solve the differential equation dx/dt=-kx^2 i.e. solve for x as a function of t. I've been told to rearrange the equation to yield dx/x^2=-k dt but what can and should I do now?

asked by xX_Supaman_Xx on December 14, 2007
94. Algebra 1

Solve the following equation by graphing the related function. 1. 4x^2 + 8x = 32 A: ? Use the Zero Product Property to solve the following equation. 2. x(x + 3) = 32 A: ?

asked by Victoria on May 12, 2014
95. Algebra

Solve the compound inequality. -9 (less than or equal to) -3x - 9 (less than or equal to) 15 I totally forget how to solve inequalities, please help! Thanks!

asked by Hope on June 3, 2009
96. Math

Can someone please explain how to solve 3x^2+7x-15=0 by using the quadratic equation? I know that the equation is: ax^2+bx+c=0 but I get confused about how to set the problem up and solve. Thanks.

asked by B.B. on September 26, 2009
97. Algebra

Please help! I need to factorise and solve this equation, x^2 +x -30 =0 I then need to explain how I would use the answer drom this to solve the equation 4x^2 +4x-120=0

asked by Mac on May 5, 2010
98. Chemistry

I am dealing with the integrated rate laws. Can somebody please help me with my algebra? First order ln(A)=-kt+ln(B) solve for t,and k and B Second order 1/(A) = kt+1/(B) solve for k and t and B

asked by Agnes on May 13, 2013
99. general maths

Solve it... [ ] + [ ] + [ ] = 30 fill the brackets using below numbers ( 1, 3, 5, 7, 9, 11, 13,15 ) you can repeat the numbers... Please help me! Many more people unsucceed to solve it