# 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 21
1. ## chemistry

if change in E= -1500J what does that mean? the system gained heat the surroundings lost heat the system did work the surroundings did work more information is needed please help.

asked by Jessie on August 27, 2012
2. ## Chemsitry

Check my work? What is the approximate pH of a 0.05 M solution of HSCN that has a Ka of 10-4? HSCN -> H+ + SCN- --------------------------- The equation for calculating pH is pH = -log [H+] Now we need to find H+ and solve. [HSCN] = 0.05 M the molarity Ka

asked by Aurora on May 13, 2016
3. ## English/Science

I really need your help to determine if the following techniques are possible when analyzing scientific data (biodiversity in water) with pupils. I think an English science teacher can help me determine the techniques. Approach 1) Task organization and

asked by Henry2 on February 2, 2012
4. ## Math

Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 Please get me on the correct track for 3x -4y =8 x=4, y=1 for 6x - 2y =10 x= 2, y= 1 Solve one equation for x. 3x = 4y + 8 x = (4y + 8)/3 Insert that value for x in the other

asked by Amanda on May 20, 2007
5. ## physics

1.A round wooden log of diameter 73cm floats with half of its radius above water. Determine the log’s density 2.An ideal gas doubles its volume in one of three different ways: at constant pressure, at constant temperature, and adiabatically. For each

asked by sandhya on June 29, 2010
6. ## Differential Equations

Consider the differential equation: dy/dt=y/t^2 a) Show that the constant function y1(t)=0 is a solution. b)Show that there are infinitely many other functions that satisfy the differential equation, that agree with this solution when t0 [Hint: you need to

asked by Erica on January 31, 2013
7. ## Differential Equations

Consider the differential equation: dy/dt=y/t^2 a) Show that the constant function y1(t)=0 is a solution. b)Show that there are infinitely many other functions that satisfy the differential equation, that agree with this solution when t0 [Hint: you need to

asked by Erica on January 31, 2013
8. ## 8th grade Science

How do I show work for Si + Cl ?? The answer is SiCl with a little 4 down below the Cl. but I don't know how to show the work.

asked by Susan on January 19, 2011
9. ## Chemistry

What is the pH, pOH, [H+] and [OH-] for a solution that contains 5.25 x 10^-3 moles of HCl dissolved in 3.25 L of water? I was gone the day my teacher explained this and I'm completely lost on what to do. An outline of steps needed to solve the problem

asked by Joey on May 8, 2015
10. ## Chemistry

Balance these reactions using the half-reaction method Sn2+ + IO3- -> Sn4= + I- (acidic solution) CrO2 + ClO- -> CrO42- + Cl- (basic solution)

asked by Mary on May 26, 2010
11. ## college math

I do not understand a problem from a text book or how to solve the problem for the answer. Could shomeone show me the steps (show work) on how to solve this question. The sum of the intergers from 1 through n is n(n+1)/2. the sum of the squares of the

asked by dave on August 13, 2010
12. ## physics

The human eye is sensitive to electromagenetic waves that have wavelengths in the range from 400nm to 700nm (1nm=10^-9m). What range of the frequencies of electromagentic radiation can the eye detect? Can you please show me the steps and work because i

asked by sammy on May 24, 2007
13. ## PHYSICS 1

The vector signs are above each letter (I just don't know how to show it that way) A= 145 units @ 190 deg. B= 75 units @ 288 deg. C= 210 units @ 85 deg. D= 105 units @ 355 deg. How do I use the component Method with these given magnitude and degree???

asked by ANON on January 12, 2016
14. ## Grade 11th Maths

(Second Time posting this problem)This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. For any sets A and B. Prove that A∩B⊂A and A∩B⊂B.

asked by Akashdeep Singh on July 4, 2010
15. ## Chemistry- Drbob-help#3

I still need help with #3 I'm not sure how I got 1.14M. I have tried to do the problem over, but I not coming up with my original answer of 1.14M. Somehow I am missing a step. Please show work for the 1.14M Thanks Question#9 reads exactly as written. A

asked by Paul on February 10, 2011
16. ## Univ of Phoenix

Solve the system of equations by graphing. Then classify the system. x+y=9 x-y=3 Use graphing tool to graph the system

asked by Yvette on December 20, 2011
17. ## mathsP5

There are 2 packets of flour, Y & Z.The ratio of the mass of Y to Z is 4:1. If 26g is added to Z,the ratio of the mass of Y to Z is 7:5. Find the mass of the 2 packets at first. Pls show how to solve by model method as i have not learnt algebra. tks

asked by joel on August 20, 2011
18. ## Personal Finance

Nancy Tai has recently opened a revolving charge account with MasterCard. Her credit limit is \$1000, but she has not charged that much since opening the account. Nancy hasn't had the time to review her monthly statements as promptly as she should, but over

asked by Sue on October 11, 2008
19. ## Algebra

Write a direct variation equation that relates x to y. Then solve. Show both the equation and the solution. If y = 8 when x = 4, find y when x = 5.

asked by joshua on January 5, 2011
20. ## chem

What is the pH ( 3 significant digits) of a 0.01 M solution of sulfuric acid? Hint is that the first ionization constant is "large", and the second is finite, and the [H+] donated by the second equilibrium depends upon the amount of [H+] already donated by

asked by lyne on March 26, 2008
21. ## Science/English

I really need a science teacher to check point 1 and tell me if the rest is possible. Thank you very much! 1) Task organization and information distribution The various tasks will be divided among participating students according to the logical breakdown

asked by Henry2 on February 3, 2012
22. ## Math help please!

Mrs. Miller sells a house for \$179,000. If she earns a commission of 6%, how much money does she earn? Write a porportion and show your work. Can someone help Me understand how I would solve this? Thanks!

asked by ABC on December 1, 2017
23. ## bio

how many grams of sucrose would you need to prepare 10 mK of ,o1M solution of sucrose(FW+342g/mole)? show your work

asked by milly on September 1, 2011
24. ## BIO/CHIM

How many grams of sucrose would you need to prepare 10 mL of .01M solution of sucrose(FW+342g/mole)? show your work

asked by milly on September 1, 2011
25. ## Chemistry

How many milliliters of a stock solution of 2.00 M KNO3 would you need to prepare 250 mL of 0.150 M KNO3? Please show work.

asked by MEGAN!!!! on April 30, 2010
26. ## trig

Find all solutions in the interval [0,2π) for cos(x - π/6) = 1 + cos(x + π/6). Show work, please and state in solution set.

asked by Jane on March 8, 2016
27. ## CHEMISTRY..please help..thanks

If you add 23.5g of NaCl to 1.2 kg of water, what will be the boiling point and the freezing point of the new solution? (Kf=1.86, Kb=0.52) (Please show work, I appreciate everything)

asked by Jasmin on November 10, 2010
28. ## Differential Equations

Consider the differential equation: dy/dt=y/t^2 a) Show that the constant function y1(t)=0 is a solution. b)Show that there are infinitely many other functions that satisfy the differential equation, that agree with this solution when t0 [Hint: you need to

asked by Erica on January 31, 2013
29. ## Alg 2

Today we learned how to solve systems of equations with 3 variables, however my teacher didn't go over how to do a problem where not every single equation in the system has the 3 variables. Can someone point me to a place that explains this? the kind of

asked by john on October 5, 2012
30. ## PLEASE CHECK

1.)Solve for y in the following system of equations. x + 4y = -38 -x - 6y = 58 My answer 1.) -10 2.) 6 3.) 12 4.) 10 2.)Solve for y in the following system of equations. x - 10y = -50 -4x + 6y = -4 1.) -6 2.)3 3.)-3 My answer4.)6

asked by Mackenzie on April 17, 2012
31. ## Algebra 1 (Reiny or Kuai)

1. The school band sells carnations on Valentine's Day for \$2 each. They buy the carnations from a florist for \$0.50 each, plus a \$16 delivery charge. a. Write a system of equations to describe the situation. A: y = 2x; y = 0.50x + 16. b. Graph the system.

asked by Please, help me! on December 9, 2013
32. ## algebra

Determine the length of the missing side of each right triangle. Show your work. 1)a=15; b=?; c=20 Answer is b= 5√7 2)a=9; b=12; c=? Answer is c= 15 **How do I show my work to come up with each of these two answers? THANK YOU!!

asked by Tim on February 16, 2017
33. ## Algebra

Can you please help me with these Algebra word problems? Complete the following word problems. 1. Tell whether the table represents inverse variation. If so, write the inverse variation equation and solve for y when x = 4. Show work that supports your

asked by Student on March 28, 2014
34. ## Algebra 2

Please help me solve and find the excluded values for this problem. Also please show me the work for this problem I want to learn!F(h) = x^2-9/x^2-4x+3

asked by Omar on April 3, 2014
35. ## Algebra 2

Please help me solve and find the excluded values for this problem. Also please show me the work for this problem I want to learn! h(x)=x^2-9/x^2-4x+3

asked by Omar on March 28, 2014
36. ## Algebra 2

solve each equation. check for extraneous solutions. sqrt(2x+1)+sqrt(2x+6)=5 please show work!!!!!

asked by maria on February 9, 2015
37. ## prealgebra

Find the new amount. #6) Decrease 8 by 75%. #7) Decrease 135 by 22%. I don't know how to solve and show work

asked by vick on February 27, 2012
38. ## trig 30

Please help I need to solve the following question for x, where 0

asked by Rae on April 29, 2010
39. ## Organic Chemistry

Which of the following products of the acid-catalyzed elimination of 2-pentanol is the Hoffmann elimination product? A. trans-2-butene B. cis-2-butene C. 1-butene

asked by nilee on March 6, 2009
40. ## math help pleaseee

One of the zeros of the function f(x)=x^3-28x-48 is x=-4. Factor the function. Show your work. How do I solve this?? Please help??

asked by meme on May 2, 2017
41. ## college algebra

solve the logarithmic equation. Please show all work. log5x+log5(x-3)=log5(x+5)

asked by Tammy on March 4, 2012
42. ## ALGEBRA 2 help please would appreciate

x x _____ - _____ = x^2+9 ________ x+3 x-3 X^2-9 solve for x. and check answer thank you show work please

asked by lisa on October 1, 2013
43. ## mATH, ALGEBRA

i need help solving the system by addition. 5x-7y=5 x+3y=1 this is what i think but i am not sure 3y=-x+1 y= -(1/3)x+(1/3) 5x - 7 (-1/3x + 1/3) = 5 5x+2.3333331x-2.3333331=5 7.3333331x-2.3333331=5 7.3333331x=7.3333331 x=1 x+3y=1 1+3y=1 3y=1-1 3y=0 y=0 so

asked by jasort120 on April 13, 2007
44. ## Chemistry

Calculate the end point pH, when 25 mL of 0.01 mol/L HCl solution reacts exactly with 25 mL of 0.1 mol/L NH4OH solution. NH3 Kb = 1.8 x 10^-5 This will be the pH of NH4Cl solution. NH4+ + HOH ==> NH3 + H3O^+ Ka = Kw/Kb = (NH3)(H3O^+)/(NH4^+). Solve for

asked by Raj on May 31, 2007
45. ## Math

The equation V=1/3 Bh gives the volume V of a pyramid, where B is the area of the base and h is the height. Solve this equation for B. Please help me and show your work thanks

asked by Ann on February 16, 2012
46. ## precalculus

use the information to solve the triangle. If two solutions exist, find both solutions can you show how to work this out? A=150°,b=4.8,a=9.4

asked by Anonymous on November 27, 2016
47. ## math,correction please

Problem #1 Solve by completing the square 2x^2-4x-11=0 My answer: x = (2+/-sqrt 26)/(2) Problem #2 Solve by using the quadratic formula x^2-4x-60=0 My answer: x = (2+/-sqrt 16)/(2) You did not do it completeing the square. Please show work. ON the second

asked by jasmine20 on April 15, 2007
48. ## Chemistry

Hello. My teacher gave us a worksheet today she tried to explain it but I still don't understand it can someone help me please? 1) A jar is filled with mercury and has a volume of 500.mL. What is the mass of mercury in the jar? Show your work for credit.

asked by Treasan on September 21, 2010
49. ## Please Math

8. p + 4 < –24 p < –20 p < 28 p < –28 p < 20 9.p/8 ≥ –5 p ≥ 40 p ≥ 3 p ≥ –13 p ≥ –40 10. –5p > –30 p > 6 p < 6 p > –35 p < 35 11. Which inequality matches the graph? 3x + 1 > 4 3x + 1 ≥ 4 3x + 1 < 4 3x + 1 ≤ 4 12. Which

asked by Hotline Bling on December 17, 2015
50. ## Physics please help me (:

Calculate the change in internal energy of a system if 25000 J of heat is added to the system while the system does 40000 J of work on its surroundings. Does this represent an increase or decrease of internal energy?

asked by Sammie on October 20, 2015
51. ## algebra II

I'm quite clueless as to how to solve this. I know the quadratic equation but am not sure how to get this equation into the format to plug in to the quadratic... Solve the quadratic equation using the formula [1/(1+x)]-[1/(3-x)]=(6/35) Show your work

asked by maddie on May 24, 2009
52. ## American History

I was given a cartoon but I cannot find it online to show you. Its a picture of the white house with a tape recorder on top. Its related to the Watergate Scandal. It asks how has the White House been modified in the picture, and what does that modification

asked by Cherrybombx0 on September 3, 2014
53. ## Chemistry

In a chemical analysis, 3.40g of silver nitrate in solution reacted with excess sodium chloride to produce 2.81g of precipitate. What is the percent yield? Please show work. Thanks

asked by gambit on March 31, 2012
54. ## Chemistry

In a chemical analysis, 3.40g of silver nitrate in solution reacted with excess sodium chloride to produce 2.81g of precipitate. What is the percent yield? Please show work. Thanks

asked by gambit on March 31, 2012
55. ## calculus

Iamhaving a really hard time trying to understand this question. Can someone please show me how to work this question. Give the following polynomial, find a. the zeros and the multiplicity of each b. where the graph crosses or touches the x-axis c. number

asked by Sammy-Please,please help!!!! on December 18, 2012
56. ## college chemistry - molarity question

My textbook doesn't show me how to do problems like the following, and I'm having a hard time finding similar problems online. Most of the molarity problems I'm finding involve mixing a substance with water, but these involve mixing moles of substances

asked by lholmq on April 29, 2009
57. ## Math

Robin cross- stitches bookmarks and wall hangings . A bookmark takes her 1 1/2 days, and a wall hanging takes her 4 days. Robin recently spent 18 days cross- stitching 7 items. Solve the system of equations to find the number of bookmarks b and the number

asked by Carly on February 25, 2012
58. ## Social Studies (Check, Please!)

What methods did Hitler use to try to exterminate Europe's Jewish population? A: Hitler used multiple methods to try to exterminate Europe's Jewish population. One method consisted of rounding up Jews, Gypsies, and Slavs from conquered areas, shooting

asked by Victoria on December 31, 2015
59. ## prealgebra

Find the New amount. #4.) Increase 35 by 40% #5) Increase 125 by 8% I don't know how to solve this and show work. Please help me kind person

asked by vick on February 27, 2012
60. ## Algebra 2

Please help me solve and find the excluded values for this problem. Also please show me the work for this problem I want to learn!@!@!. 49X^6+7X^7/28X^8

asked by Omar on March 28, 2014
61. ## Chemistry

The vapor pressure of pure acetone (propanone) is 266 torr. When a non-volatile solute is added, the vapor pressure of acetone above the solution falls to 232 torr. What is the mole fraction of acetone in the solution? Show work. A) 0.69 B) 0.32 C) 0.13 D)

asked by Dee on February 27, 2013
62. ## Chemistry

Hi, can you help with how to solve this equation? 50.0 gram sample of NaCl is added to water to create a 0.50 L solution. What volume of this solution is needed to create a 1.30 L solution that is 0.100 M NaCl? The choices provided: a) 152 mL b) 255 mL c)

asked by Cassandra on April 3, 2015
63. ## math

solve the following question algebraically, show your work 13 + w/17 = -18 Please help, this is my last question and i'm so confused ):

asked by hush my child on September 20, 2018
64. ## college alg

solve the following logarithm equation log (4x+7)=1+log(x-6) x=? please show work

asked by MYA on September 5, 2012
65. ## Algebra

I need help solving an equation Solve the following equation for a. Please show all of your work. C = 1/6 (10b-7a)

asked by Rebecca on December 18, 2010
66. ## Math - logarithmic equation

Solve the logarithmic equation. Please show all of your work. Loga(x+3) + loga(x-3) = 3

asked by CheezyReezy on June 6, 2011
67. ## college algebra

solve the following logarithm equation log (4x+7)=1+log(x-6) x=? please show work

asked by ALLI on September 5, 2012
68. ## Math

Solve the logarithmic equation. Please show all of your work. Loga(x+4) + loga(x-4) = 4

asked by Bethany on June 8, 2011
69. ## precalculus

solve the logarithm equation show work. log_7(x-8)- log_7(x-2)=1

asked by Sara on January 11, 2012
70. ## University Math

If f (x) = (x^2+5x+2)^2, find f'(x). Find f'(5). Please show your work and explain it so I can understand how to solve this. Thanks

asked by Mary on September 17, 2011
71. ## Chemistry(Please respond)

I did an experiment to study the effects of changes in conditions on an equilibrium system. The first system was the dissociation of acetic acid. HC2H3O2 -> H^+^ + C2H3O2^-^

asked by Hannah on March 14, 2012
72. ## Physics

A new roller coaster is a conservative system. If the coaster leaves the starting point with a speed of 5 m/s and a height of 25 m, what is its velocity when it reaches a height of 2.5 m? A. 9.81 m/s^2 B. 21.6 m/s C. 15.4 m/s D. 12.6 m/s Pls show work

asked by Ciara on December 3, 2012
73. ## Math

Determine if f could be a linear function x 0 1 2 3 4 f(x) 3 5 7 11 15 is this a linear function and then... 2x - 6y = 12 3x-9y = -27 What is the solution of the system of equations? A) no solution B) a point C) infinitely many solutions Is the system

asked by Mike on September 26, 2008
74. ## Math

As a restaurant owner there are many decisions that you need to make on a daily basis, such as where to keep inventory levels. You wish to replenish your stock of dishes by purchasing 250 sets for your restaurant. You have two dish design from which to

asked by Mary Troy on November 6, 2010
75. ## Algebra

What is the side length of a square with an area of 144x²? A.12 B.12x C.±12x D.no solution I think it is C...? If I am right can you show your work please...I am just starting to understand these..thank you

asked by Cassie on February 24, 2013
76. ## chemistry

Determine the concentration of a solution of Mg(NO3)2 given the precipitate formed is 2.97 g and there are 50mL of Mg(NO3)2 and 50 mL of NaOH. Please show all work for each step clearly

asked by LARA on September 18, 2012
77. ## Math

1. Tell whether the system has one solution infinitely many solutions or no solution. 9x+8y=15 9x+8y=30 a. one solution b. infinitely many solutions*** c. no solution 2. Tell whether the system has one solution infinitely many solutions or no solution.

asked by Kaai97 on January 11, 2016
78. ## Geometry 6th grade

flat roof that is 22Œ by 36Œ cylindrical cistern 12Œ high and 5Œ in diameter Rain falls on a flat roof that is 22Œ by 36Œ. The rain drains into a cylindrical cistern 12Œ high and 5Œ in diameter. Assume that all of the rain drains

asked by Towanda on December 9, 2009
79. ## Algebra HELP!

Solve by substitute: 1) y=2x-1 2x+2y=22 Solove by emlimination: 1) 5x+4y=-83 3x-3y=-12 Solve using a method of your choice: 1) x+2y=23 5x+10y=55 2) y=x+1 2x-2y=-2 Please help me I don't understand any of this, it's my second day of school and I already

asked by Kitty on September 7, 2016
80. ## Physics: Work

1st question: I was solving a question and I was asked the work done by friction. It is natural that work done by friction (a retarding force)should be negative and in my answer it was. However, just to be sure, work can be negative? 2nd question: A block

asked by Matt on March 12, 2007
81. ## algebra 2

Identify the point of intersection listed below each system of linear equations that is the solution of that system. 2x+5y=10 x-3y=-6 (5,0);(0,2); (3,1)

asked by Misty on January 4, 2011
82. ## 5s method

how do you solve this problem... solve 6x3 using the 5s method

asked by marie thompson on August 29, 2011
83. ## 5s method

how do you solve this problem... solve 6x3 using the 5s method

asked by marie thompson on August 29, 2011
84. ## precalculus

Can you check my answer? If it is wrong can you please explain why and give the correct answer? Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6 answer:2x+4y+z=-4 8y-5z=-17 z=1

asked by Anonymous on November 30, 2016
85. ## algebra

2) A high school drama club is putting on their annual theater production. There is a maximum of 800 tickets for the show. The costs of the tickets are \$6 before the day of the show and \$9 on the day of the show. To meet the expenses of the show, the club

asked by nyjah on December 26, 2013
86. ## trigonometry

this is exactly how the question is written and i tried to solve it but i just couldn't. Can u please show me how the work was done I don't want just the answer. using the exact values,find the value of: 12 sin 30degrees - 6 tan of 45 degress + sec 45

asked by alex on January 9, 2011
87. ## Math

Consider the following 2x2 system of linear equations, x + y = 3 x + (a^2 - 8)y = a If the system have a unique solution, then a takes any value except a=-3 and what?

asked by Anonymous on August 10, 2012
88. ## ALGEBRA

A chemist is asked to make 10 liters of a a35% solution. She has only a 10% solution and a 50% solution to work with. how much of each solution must she mix to ge 10 liters of the 35% solution?

asked by jackie on January 28, 2012
89. ## art

1.what is one characteristic on this student work a. creation of 3-D art b. creation of cubist art c. exact representation of human proportion**** 2. to create a portfolio of work this artist would do all the following except? a .include more drawings of

asked by Melanie on December 3, 2018
90. ## Algebra

Consider the equation: 4x^2 – 16x + 25 = 0 (a) Show how to compute the discriminant, b^2 – 4ac, and then state whether there is one real-number solution, two different real-number solutions, or two different imaginary-number solutions. (b) Use the

asked by Tammie on July 8, 2009
91. ## Algebra

Consider the equation 4x^2 – 16x + 25 = 0. (a) Show how to compute the discriminant, b^2 – 4ac, and then state whether there is one real-number solution, two different real-number solutions, or two different imaginary-number solutions. (b) Use the

asked by Pamela on July 7, 2009
92. ## Physics

Just as no mechanical device can be 100% efficient, no heat engine can transfer 100% of its heat to a single object. Some of the heat energy must be wasted (released into the environment). We have a heat engine that produces 150 J of heat, does 40 J of

asked by Jessica on December 7, 2016
93. ## Algebra

Please help me solve this problem the kinetic energy (k) energy of a moving object with varies jointy with it mass (m) and the squareo of its velocity (v). If an object has an mass of 22.5 kilograms and moving with a velocity of 20 meters per secomd has a

asked by rosa on May 23, 2010
94. ## physics to be conceptualize

Which of the following statements are FALSE? Select all that apply. In an isolated system where only conservative forces cause energy changes, the kinetic energy and potential energy of the system can change, but the mechanical energy of the system cannot

asked by member of physics on October 23, 2012
95. ## ALgebra

JUST A MOM TRYING TO HELP MY CHILD WITH UNDERSTANDING. DON'T KNOW HOW TO SOLVE THE SECOND PROBLEM Write equation for each segment. show your work. (-4,-3) (-3,-3) Y = mx + b 3 = 0(-4) +b 3 = 0 + b Y = x - 3 (1,-5) (6,-2) Y = mx + b -5 = 3/5 (1) + b -5 =

asked by DON'T UNDERSTAND on October 30, 2014
96. ## Physics

Hello can someone please help me with this physics question and show the work so I can understand? A box at the top of a rough incline possesses 981 joules more gravitational potential energy than it does at the bottom. As the box slides to the bottom of

asked by Becky on February 9, 2016
97. ## personal finances

If creditors add finance charges after subtracting payments made during the billing period, this is called the: A. APR method. B. average daily balance method. C. previous balance method. D. adjusted balance method. its not A or D someone help me

asked by tony on April 17, 2014
98. ## math

Solve the system 6x+4y = 12 9x+6y = 18 If the system has infinitely many solutions, express your answer in the form x=x and y as a function of x x=? y=?

asked by Jillian on September 3, 2009
99. ## algebra1

Find to consecutive integers that the sum of 3 times the first integer and 6 times the second integer is 24. Define the variabls you use. If somebody can show me how to work this out, I will be very greatful for the help? consecutive integers, n, n+1 3n +

asked by Malik on March 23, 2007
100. ## biology

if a solution has a pH of 4 mix to a solution that has a pH of 9 what will be the pH of the mixed solution? will it be acidic or base? please show me how to calculate it.please i need the answer before tomorrow morning. thank you so much. I had been to

asked by heather on October 20, 2009