# 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 69
1. ## Algebra 2

what is the positive solution of the equation x^2 = 2x + 35? solve by factoring.

asked by Zach on December 8, 2014
2. ## math

Solve the equation for x. Write the solution set -4x + x2 – 9x + 6x = 0

asked by aj on May 17, 2011
3. ## algebra

Q: solve using the addition principle 2x + 6 > x + 16 the solution set is {x|x > ?} A: {x|x > 10}

asked by Carmen on October 4, 2008
4. ## Algebra 2

Solve this equation: √4x+8=6 If there is more then one solution enter with a comma

asked by Nancy on April 18, 2012
5. ## MATH

EVALUATW (-8B)^2 AND -8B^2 WHEN B=10. (-8B^2)= -8B^2= SOLVE USING THE ADDITION PRINCIPLE. 3.8=S=0.1. THE SOLUTION IS S= THANK YOU

asked by Jamie on September 27, 2009
6. ## Algebra

Solve the exponential equation using an algebraic solution: 2^x = 32

asked by Stacy on August 4, 2009
7. ## algebra

Solve the equations by finding the exact solution. (a) (1)/(2) x - 3 = 3

asked by Anonymous on November 4, 2011
8. ## Chemistry

What is the pH of a 0.50 M solution of NaNO2 if the Ka of H20x = 4.5 x 10^-4. I know that you use the Ka to find Kb and solve from there, but why?

asked by Valerie on September 26, 2012
9. ## math

Solve the following equation for the variable. 7/x-4+4/x+4=2x/x^2-16. The solution is x= ?.Thank you in advance.

asked by Kay on July 2, 2009
10. ## Algebra II

Solve the equation and write the solution set. |4x – 8| – 3x = 6x + 2 I need help!!

asked by Mary on September 19, 2013
11. ## intergrated math

Solve the equation for x. Write the solution set. 1. x(x – 2) = 0

asked by aj on May 17, 2011
12. ## math

4 In e= In (ã(3))/(x)-4 In e Solve the equations by finding the exact solution.

asked by Andrew on March 15, 2013
13. ## Pre-Calc/Trig...

Help me please. Solve the equation: (x-3)(x+2)=0 Enter the solution with the lowest value.

asked by Anonymous on October 16, 2014
14. ## math

Solve: 4 + 5x < 29 5x < 4 +29 5x < -4 +29 5x=-25 Solution set is x|x < -5 4x+5y=7 5x-4y=5 The lines are parallel am I right

asked by Mary on April 8, 2009
15. ## Math

Solve the equation from smallest to largest. 2x^2 = 7x + 4. If the no solution.

asked by Linda on June 13, 2012
16. ## math

solve the equations by finding the exact solution 3=x-3

asked by Andrzej on February 10, 2013
17. ## algebra 2

Solve the equation. Give an exact solution. ln(3x - 2) = ln 2 - ln(x - 1)

asked by sky on July 13, 2011
18. ## algebra

Solve the inequality. Graph the solution set. 2r-9>-6

asked by allexelle on April 10, 2015
19. ## math

Solve for x to the nearest hundreth for an algebraic solution. 2^(x-2)=54

asked by Anonymous on January 17, 2011
20. ## algebra

solve using the multiplication principle -6x < -18 the solution set is {x|x ? ?} A: {x|x < 3}

asked by Carmen on October 4, 2008
21. ## ALGEBRA

Solve the equations by finding the exact solution. ln\(x\) - ln\(9\) = 3

asked by Randy on April 16, 2012
22. ## ALGEBRA

Solve the equations by finding the exact solution. (a) 1 = x - 1 (B)

asked by Randy on April 16, 2012
23. ## ALGEBRA

Solve the equations by finding the exact solution. ln\(x\) - ln\(9\) = 3

asked by Randy on April 16, 2012
24. ## Math 116 algebra please check

Solve using the multiplication principle. -4x > 1/11 The solution is x > -1/44 Is this correct

asked by jay jay on July 16, 2008
25. ## Basic Algebra

solve the equation m, and check the solution: 5/6x-1/5x+4=7/10x

asked by Catherine on July 16, 2011
26. ## Pre-Calculus

Solve the inequality -2

asked by you on October 22, 2007
27. ## Math

y - 6 ==> 12 Solve the inequality and describe the solution set

asked by HELP!! URGENT HELP! on June 11, 2014
28. ## math

solve the inequality |2y-5|>8 what will be the solution in interval notation

asked by Anonymous on October 2, 2010
29. ## math

solve the equation. check the solution 5 x g -5 = 100

asked by ann on October 31, 2011
30. ## Math

I do not understand please explain for me solve for the indicate letter x=13+x, for x the solution is x =

asked by Johnson on November 19, 2011
31. ## chemistry

Calculate the pH of a 0.87 M NaCN solution. Solve it exactly (no assume x=0.1)

asked by Justin on March 20, 2012
32. ## algebra URGENT HELP

x+14/x-8 ≥ 1 solve and write solution in interval notation

asked by zachary on March 16, 2013
33. ## algebra

Solve. then graph ×+8>2 The solution set {×|×>blank}

asked by Bee on May 20, 2011
34. ## math

Solve the equation for x. Write the solution set -x(x + 8) = 0

asked by aj on May 17, 2011
35. ## Algebra 2

Solve the inequality 12+4x>16 and graph the solution set.

asked by Danielle on May 24, 2010
36. ## math help

solve the inequality |2y-5|>8 what will be the solution in interval notation

asked by Anonymous on October 2, 2010
37. ## Math 116 algebra

Please check this problem Solve 5/2x + 1/4 x = 9/4 + x The solution is x = 9/10 Is this correct.

asked by jay jay on July 16, 2008
38. ## algebra

Solve the equation. Check your solution. 164=x-59

asked by jenny on January 15, 2013
39. ## math

f"(x)=2, f'(2)=5, f(2)=10. solve this differential equation by finding the particular solution. How do you do this?

asked by Ed on December 1, 2009
40. ## calculus

Solve the equation. Give the exact solution. 2*10^(5x-3)+5=17

asked by Michael J on April 7, 2015
41. ## math

Solve the linear inequality x/7 +3x/14 ≤ 4/7 The solution set is?

asked by Austin on August 10, 2012
42. ## math

Solve the inequality and describe the solution set. y – 6 ≥ 12

asked by Anonymous on April 13, 2018
43. ## Algebra1

-3(x+3)=-3(x+1)-5 how to solve for x please help / the answer has to be 6,,,-6,,,all real numbers,,, or no solution .???????????????????????????????????????

asked by Robbie on September 15, 2014
44. ## health help me

1. Starches and sugars that provide energy (1 point)kidneys enzymes carbohydrates vitamins 2. The system that removes waste from the body and controls the body's water levels (1 point)excretory digestive system liver kidneys 3. Organs that remove waste

asked by poppy on November 17, 2012
45. ## math

Sales clerk at an appliance store have a chance of 2 payment: Plan A: \$580 every 2 weeks plus 4.2 % commission on all sales Plan B: \$880 every 2 weeks plus 1.2 % commission on all sales a) Write a linear system to model this situation b) Graph the linear

asked by trixie on June 11, 2013
46. ## Math

Please tell me if the answers I posted are correct with the questions given. I am terrible at math. A certain Metropolitan area is building a new Performing Arts Center with two auditoriums to be used as concert venues. Budget: \$89,200,000 for construction

asked by newcomb on November 5, 2009
47. ## math

Solve by elimination 5x+y=2 3x+y=1 This is what I got : 3(5x+y=2) -5(3x+y=1) 15x+3y=6 -15x-5y=-5 -2y=1 2 2 Y=1/2 15x+3(1/2)=6 15x+3/2 =6 15x/15= 9/2 /15 X=3/10

asked by Please help on March 23, 2014
48. ## Maths

If z=(x^n) f(x/y), where f is an arbitrary function, show that: x(partial z/partial x) + y (partial z / partial y) = nz Can someone please show me how to work it out? Thanks!

asked by Claire on February 3, 2010
49. ## Chemistry

1. How would you take 1L of an existing solution with a concentration of 1M and use it to make a new solution of 0.1 M? Be specific. Tell me the process..... What would you do....ex: I would pour this into that ....... 2. Would it be possible to easily

asked by Anonymous on January 17, 2013
50. ## Chemistry

You prepare a solution by dissolving 58.5g of LiCL in 250ml of solution. If the solution is further diluted by having a total volume of 750ml, what is the concentration of the final solution?

asked by Junny on July 3, 2013
51. ## English- Borders by Thomas King- One question

Which best describes why the author has the mother and son in borders sleep in the car for two days? a. to show their poverty b. to show the bureaucracy of the border control c. to show tension among the characters in the rising action of the story d. to

asked by basketball&batman on December 2, 2015
52. ## Algebra Help

You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales. Begins “Once upon a time … ” Animals can act like humans. Involves magical items or helpers. Ends “ … happily ever after.” Your story

asked by Dina on January 15, 2015
53. ## Chemistry

I have discovered a new chemical compound with the formula A2B. If a saturated solution of A2B has a concentration of 4.35x10-4M. a) What is the concentration of B2- ions? b. What is the concentration of A1+ ions? c. What is the solubility product constant

asked by Serena on March 16, 2014
54. ## Ti-83 - Motion equation

Hi I have spent ages trying to work out the way to program my TI-83 calculator to solve the following... I would appreciate guidance or direction to a site that can show me how to solve the following;- motion of two stage rocket is stated by it height y in

asked by Leo on November 26, 2007
55. ## TI 83 Graphing help !!!

Hi I have spent ages trying to work out the way to program my TI-83 calculator to solve the following... I would appreciate guidance or direction to a site that can show me how to solve the following;- motion of two stage rocket is stated by it height y in

asked by Leo on November 26, 2007
56. ## Chemistry

I am about to do an extraction experiment, and needed help with a question to improve my understanding. Any help appreciated. 1. You have 150 ml of a solution of benzoic acid in water estimated to contain about 5g of the acid. The distribution coeffcient

asked by Natasha on March 12, 2010
57. ## Business Math

(DEPRECIATION SCHEDULE A) A. A \$1200 postage printing system depreciated using the straight-line method over 4-years. In your depreciation schedule, give the following information for each year: 1.The year's depreciation 2.The accumulated depreciation

asked by NelsonJ on October 6, 2007
58. ## science

please help me in science i don`t now what is the answer of my assignment.dis is a question. 1.what are the main division of nervous system? 2.what are the organs of the central on nervous system? 3.what are the parts of the peripheral nervous system?

asked by leane hart garcia on July 4, 2012
59. ## business

are all banks part of the federal reserve system? As Fedaral reserve system is considered as the leader of the banking system in U.S.A, all banks are resposible to to the Federal reserve system. But they not treated as the branch of the federal sytem

asked by jamie on March 12, 2007
60. ## Math (Calculus II) (Volume Revolution Setup)

Take the area enclosed by the curves y = sqrt(x), y = 1, and x = 4. Rotate it around the line x = 5. Find the volume. While I understand the general problem would call for the shell method ∫[a,b] 2*pi*r*h dx With r = 5 - x and h = sqrt(x) - 1 But, what

asked by Ray on May 23, 2017
61. ## chemistry

this is my work, would you please check my work, thank you! part A a liter of a solution saturated at 225 degree C with calcium oxalate, CaC2O4, is evaporated to dryness, giving a 0.0061 gm residue of CaC2O4. calculate the concentrations of the ions, and

asked by wendy on April 8, 2007
62. ## Physics

A mass m1 = 5.0 kg rests on a frictionless table and connected by a massless string to another mass m2 = 5.9 kg. A force of magnitude F = 40.0 N pulls m1 to the left a distance d = 0.77 m. 1)How much work is done by the force F on the two block system?

asked by J.C. on October 1, 2012
63. ## maths

A train travels 360 km at uniform speed . if the speed had been 5 km / hr more it would have taken 1 hour less for the same journey. find the speed of the train. pl give me a short cut method to solve.

asked by kumar on March 5, 2018
64. ## sixth grade math

Multiply. Write each product in simplest form. 1. 2 3/8 * 1 3/5 = 3 4/5 2. 1 1/5 * 3/5 = 18/25 3. 1 5/6 * 2/3 = 11/10 Do I have the correct answers? If not can someone show me how to solve them?

asked by kris on September 17, 2014
65. ## sixth grade math

Multiply. Write each product in simplest form. 1. 2 3/8 * 1 3/5 = 3 4/5 2. 1 5/6 * 2/3 = 11/10 3. 7/8 * 3 1/3 = 35/27 Do I have the correct answers? If not can someone show how to solve them?

asked by Kris on September 17, 2014
66. ## Math

My teacher forgot to tell me how to exactly solve any problem like this, she ran out of time probably. ã5/16 It says simplify the expression, could someone please show me how to do that?

asked by Geno on October 24, 2007
67. ## Calculus

Can someone show how to solve this problem Find the equation of the tangent line to the curve given by, x=3e^t y=5e^-t at the point where t=0 Thanks!

asked by Henry on August 5, 2015
68. ## math

you have \$5 for lunch. You bought a turkey sandwich for \$2.25.Write and solve an inequality to show much more can spend.

asked by I NEED HELP FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! on May 21, 2014
69. ## math

Solve the following equations algebraically for n. Show your working using factorial notation. a) n!/3!(n-2)! = 12 b) 8Pn = 6720

asked by corey on May 23, 2011
70. ## Algebra 2

Hi I need help. Can you show me how to solve this problem? Radical Inequalities. -2 + square root 9-5x greater than or equal to 6

asked by Drew on April 3, 2012
71. ## number base help plz

plz solve for me too hard show step payuto 123_(base4) = N_(base8 )

asked by naomi on February 12, 2017
72. ## Math

You have \$5 for lunch. You bought a turkey sandwich for \$2.25. Write an solve an inequality to show how much you can spend.

asked by Amethyst on May 21, 2015
73. ## Pre-Calc

I'm so stuck-this stuff is so far above me right now-Please help (3x^3-5^2+6x-9)/(x+5) or can someone direct me to a site that can solve this and show the steps-I don't even know where to start Thank you

asked by Jonah on September 9, 2011
74. ## geometry

write the equations of the horizontal and vertical lines through the given points. (5,6) Can someone please show me and explain to me how to solve this? Thank you

asked by Sacha on October 12, 2014
75. ## algebra

Can someone show me how to use fractional exponents to solve 5^(1/4)*5^(2/3) and then convert to radicals and simplify to the lowest terms?

asked by Katy on October 20, 2011
76. ## algebra

A bicyclist rode into the country for 5hr. In returning her speed was 5 mi/h faster and the trip took 4 hr. what was her speed each way? What equation would I use to solve this problem i have no idea Let V be her speed going out, so V+5 will be her speed

asked by rob on March 23, 2007
77. ## Math

I need someone to show me how to work these two problems out. 30. find the hypotenuse of a right triangle whose sides measure 9 and 12: i came up with the answer 15 but i honestly forgot how i got this answer please let me know what i did wrong and work

asked by Gertrude Sanders on November 11, 2008
78. ## math

List the ages of two people in your life, one older than you and one younger than you. It would be best if the younger person was 15 years of age or younger. Find the prime factorizations of your age and the other two persons’ ages. Show your work listed

asked by trenda on July 20, 2011
79. ## math

List the ages of two people in your life, one older than you and one younger than you. It would be best if the younger person was 15 years of age or younger. Find the prime factorizations of your age and the other two persons’ ages. Show your work listed

asked by leslie on August 16, 2011
80. ## Math

Please explain how to solve this equation with substitution: The owner of a hair salon charges \$20 more per haircut than the assistant. Yesterday the assistant gave 12 haircuts. The owner gave 6 haircuts. The total earnings from haircuts were \$750. How

asked by Jane on December 28, 2011
81. ## Calculus - Taylor

could you please help me with solving this problem? #1) Find the Taylor polynomial Tn(x) for the function 'f' at the number 'a'. f(x) = sqrt(3+x^2) ; a=1; n=2; my work so far: f (x) = sqrt(3+x^2) = (3+x^2)^(1/2) f ' (x) = (1/2)(3+x^2)^(-1/2) f '' (x) =

asked by COFFEE on July 28, 2007
82. ## Chemistry HW!!!

1. If I dilute 75 mL of 0.50 M CaF2 solution to a final volume of 375 mL, what will be the molarity of the resulting solution? 2. What will be the final volume of the solution be if I start with a 250 mL of 1.38 M MgCl2 solution to make a solution with a

asked by Theresa on March 11, 2015
83. ## Math

Linda works at a pharmacy for \$15 an hour. She also babysits for \$10 an hour. Linda needs to earn at least \$90 per week, but she does not want to work more than 20 hours per week. Show and describe the number of hours Linda could work at each job to meet

asked by Kayla on May 6, 2013
84. ## statistics

a computer system requires all users to log on using a 6 character password. if each character can be either a digit from 0 to 9 or a letter of the alphabet, what is the number of possible passwords. please show formula used

asked by luckybee on January 4, 2012
85. ## math word problem

can someone help me solve this? not just an answer but a method of solving cause im having a hard time grasping this. Three times the larger of two numbers is equal to four times the smaller. The sum of the numbers is 21. Find the numbers.

asked by koori on January 27, 2009
86. ## help please i need the code

processExpression - this method should take a String in the format: "integer [[+-*/] integer]*]" Your method should then process this expression and return the result as an integer

asked by reima on February 23, 2011
87. ## CHEMISTRY

1. How would you take 1L of an existing solution with a concentration of 1M and use it to make a new solution of 0.1 M? Be specific. 2. Would it be possible to easily create a 2 M solution from 100 mL of 1 M solution? Explain why or why not?

asked by Anonymous on January 16, 2013
88. ## Chemistry

1. How would you take 1L of an existing solution with a concentration of 1M and use it to make a new solution of 0.1 M? Be specific. 2. Would it be possible to easily create a 2 M solution from 100 mL of 1 M solution? Explain why or why not?

asked by Anonymous on January 16, 2013
89. ## college algebra (maths 112)

To conduct a new experiment, a scientist needs a 23% salt water solution. How much of a 13% solution must be mixed with 45 quarts of a 32% solution to get the proper solution?

asked by Anonymous on February 24, 2011
90. ## chemistry

how many moles of solute are contained in each solution? 250 mL of a 0.55 M NaNO3 solution? 145 mL of a 4.0 M HNO3 solution? 6.5 L of a 2.5 M HCl solution?

asked by cathy on April 11, 2010
91. ## Math

A biologist has a 36% solution and a 14% solution of the same plant nutrient. How many cubic centimeters (cc) of each solution should be mixed to obtain a 25 cc of a 25% solution? I been looking at this for 2 hours please help

asked by Please end my suffering PLEASE HELP on October 18, 2014
92. ## nutrition and wellness

hi, i'm learning about the 3 pathways of energy: The ATP-CP system, The anaerobic glycolysis system, (also called the lactic acid system because lactic acid is a byproduct of this metabolic energy pathway, and the aerobic system. i need to provide three

asked by y912f on July 22, 2009
93. ## Physics ~please help me!

1.) A car (m=1200 kg) moves form 2.0 m/s to 15.0 m/s in 100 m. a) What is the initial kinetic energy of the car? b) What is the final kinetic energy of the car? c) what is the net work applied to the car? d) what force is applied to the car? 2.) A simple

asked by Isis on February 3, 2013
94. ## college algebra

analyze the graph of the following function. r(x)= x^2+x-6 -------- x^2-x-2 there are 8 steps but they don't make sense to me... please show work!! thanks

asked by alli on August 21, 2012
95. ## math

Calculate the following, leaving your answer as a fraction (lowest) or in decimal form. Show work. b) 3(12+2+1) ---------- = 3(4 + 1)

asked by kasey on September 17, 2013
96. ## Math

Find the distance between A and B, where A and B have the following coordinates: A(–3, 5); B(5, –8). Show your work by using the notation sqrt( ) for square root.

asked by Elizabeth on April 16, 2009
97. ## Math- Partial Fractions

Decompose the following into partial fractions after factoring the denominator as much as possible. Please show some work so I can understand how you did it. 1)x^2/((x-1)(x^2+5x+4)) 2)(3x^3-5x^2+12x+4)/(x^4-16) 3)1/(x^2 (x+1)^2 ) 4)(x+1)/((x^2+1)

asked by Chris on April 4, 2013
98. ## Algebra

I've been stuck on this for a while. State whether the equation is true false or an open sentence. Show your work. 3(4+-5)=3(-6-2)

asked by Peach on May 23, 2015
99. ## math

Calculate the following, leaving your answer as a fraction (lowest) or in decimal form. Show work. a) 2(5+3+2) -------- 2(2+3)

asked by kasey on September 17, 2013
100. ## Chemistry

Write the cell notation for the reaction below. Show your work. Cu+2(aq) + 2Ag(s) + 2Cl-(aq) --> Cu(s) + 2AgCl(s)

asked by Tomas on December 1, 2010