# 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 388
1. ## Chemistry

What is the concentration of H+ in a solution containing 73.0 g of HCl in 0.5 L of water?

asked by Sarah on May 10, 2012
2. ## Chemistry

Prepare 250 cc n/10 KMno4 solution

3. ## chemistry

0.450mol of Na2S in 1.50L of solution

asked by cara on October 3, 2012
4. ## Math

If the quadratic equation x^2 + bx +c=0 has exactly one solution r, then find b/c.

asked by Henry on October 2, 2012
5. ## Calculus

asked by Kim on September 6, 2008
6. ## Chemistry

Prepare 250 cc n/10 KMno4 solution

7. ## Integral so difficult i need help

Integrate x^xdx?? help so the solution it to difficult for me

asked by Collins on October 15, 2015
8. ## Math

Identify the extraneous solution when solving √x+2= x

asked by I DONT UNDERSTAND on April 5, 2014
9. ## Chemistry

Prepare 250 cc n/10 KMno4 solution

10. ## chemistry help

calculate the PH of a buffered solution of HF and F (Pka of HF is 3.2)

asked by Anonymous on May 16, 2015
11. ## Inorganic Chemistry

1) 5.0 mL of 6.0 x 10^-4 potassium 5.0 mL of the solution prepared above are then mixed with

asked by Katheryn on July 30, 2012
12. ## math problem

haveing problem solving 8x -(6x+7)= -3 The solution is x =

asked by DJ on January 21, 2012
13. ## biology

If the pH of a sample was 3 how many times more acidic is it than a solution with a pH of 6?

asked by Astrid on November 2, 2008
14. ## biology

How can i get air in a bag, into a beaker of solution?

asked by rose on November 5, 2015
15. ## Algebra

Is (1,-4) a solution to the equation y=-2x? I need help finding the answer.

asked by learner on October 16, 2015
16. ## math

Which of the following values is in the solution set of the inequality -8-7x>-6 a) 2 b) -2 c) -3 d) -1

asked by bob on January 8, 2013
17. ## Chemistry

What is the pH of a solution of 0.1 M silver hydroxide, which is only 10% ionized?

asked by Sarah on May 10, 2012
18. ## Math

What is the solution to (4 x 10^3) x (6 x 10^6) written in scientific notation? 24 x 10^9 2.4 x 10^9 24 x 10^18 2.4 x 10^10

asked by Cody on November 12, 2016
19. ## Chemistry

How many grams of drug X are in 10 mL of a 1:200 solution of X?

asked by James on October 23, 2015
20. ## Science

How many moles of cacl2 would be used in making 0.5L of a 2M solution?

asked by Cece on September 10, 2016
21. ## Chemistry

If you had 6 moles in a 600ml of solution, what would be the molarity?

asked by Jessi on April 21, 2009
22. ## math

How many 1oz bottles will this solution fill.

asked by Kelly on June 15, 2016
23. ## Order Pairs Math

Which ordered pair is a solution of the equation y = x – 3? (–2, 5) (–5, 2) (2, 5) (5, 2) Which ordered pair is a solution of the equation y = 5x? (–2, 10) (–5, 25) (–3, 15) (–2, –10) Which ordered pair is a solution of the equation y =

asked by Jman on September 13, 2013
24. ## math

please help simplify (3y/x^4)^-3 1/(1+square root of a) what would be the best solution: (1)/(x-2) +8= (x)/(x-2)

asked by haley on April 7, 2012
25. ## Algebra

use substitution to determine if (5,1) is a solution to the inequality 2x+6y

asked by Melesa Engram on December 2, 2016

Determine which ordered pair is a solution of y = 2x - 3 A. (-2, 7) B. (0, 3) C. (-4, -11) D. (5, -7)*** Please help!

asked by MINION on June 6, 2017
27. ## eng1511

the sure solution to unemployment is a better quality of education?

asked by ntosh on March 31, 2013
28. ## math

Find the solution set for the equation. |3m + 4| + 6 = 12

asked by Sally123 on September 6, 2018
29. ## Chemistry

A solution contains I-, Br- and OH- ions. If Ag+ is added, what will the precipitate(s) be?

asked by Mo on July 26, 2017
30. ## Math

tell whether each ordered pair is a solution of the eguation 3x + y = -11, (-4,1) 2x -y = 4, (3, -2)

asked by Anonymous on April 28, 2019
31. ## Algebra

Which value of x is the solution of the equation 1/7 + 2x/3 = (15x-3)/(21) ? (Those are fractions) (1) 6 (2) 0 (3) 4/13 (4) 6/29

asked by Tibby on January 30, 2013
32. ## math

8x-5y=-35 5y-8x=35 Is the above a point, have no solution, or infinatley many solutions?

asked by Frank on May 4, 2012
33. ## calc

Find m and b so that y=mx+b is a solution to the differential equation dy/dx=1/2x+y-1

asked by Mischa on January 24, 2008
34. ## Chemistry

i need help. Calculate the pH of a 0.24 M CoCl3 solution. The Ka value for Co(H2O)63+ is 1.0 10-5. how do u do these with like the Cl there?

asked by Lindsey on February 15, 2009
35. ## bluehills high school

general solution 1-cos2x/4cos(90)

asked by lebo on November 6, 2015
36. ## chemistry

What is the concentration of hydroxide ions in a solution with a pH of 9.00?

asked by missy on November 13, 2010
37. ## math mtap

what is the solution of 60cm by 48cm.the answer is 20

asked by conan on October 17, 2015
38. ## chemistry

what is the molarity of 275mL of a solution containing 23.83 mg of Mg Cl(2)

asked by melissa on December 3, 2010
39. ## Math

Identify the extraneous solution when solving √x+2= x

What is the solution of the interval notion? x less than 6 and x greater than -3

asked by BOB on March 21, 2010
41. ## Algebra 4

Determine whether the ordered pair is a solution (-8,3);8x+y,-2

asked by Anonymous on May 12, 2010
42. ## Algebra

I am completely lost...please anyone can anyone help? x = 2+y x and 2 are in inches then it says solution y=x(in) - a(in)

asked by George on September 1, 2013
43. ## college chem

PLEASE..Determine [OH-]of a solution that is 0.270 M in HCO3-...thanks

asked by susy on April 9, 2010
44. ## Math

find the solution of the expontetial equation 1+7^(5x)=19

asked by Andrew on April 30, 2010
45. ## MATH

Perform the operation for each equation, if there is a solution [4k -8y ] [5k+6y 2k+1] [6z - 3x] - [2z+5x z+4] [2k + 5a] [4k+6a 3a+2]

asked by Jessica on November 25, 2010

What is the solution of 3 times the absolute value of x + 5

asked by Tanya on October 6, 2010
47. ## Mat 116 Final

x+3y=6 I did it like x + 3y = 6 ____________ x*(-1) +3*(2) ?6 -1 6 -6 Also, (-1,2) intercepts (3,6) Am I correct. If so. then solution for x = -1

asked by Loren on April 11, 2010
48. ## Math

Determine which ordered pair is a solution of y = 2x - 3 (–2, 7) (0, 3) (–4, –11) (5, –7)

asked by fishy on November 1, 2018
49. ## Math 120

Graph the solution set to the inequality. 2x+3y>12

asked by Kim on July 15, 2012
50. ## chemistry

asked by Mari on November 10, 2014
51. ## Math

What is the solution of the interval notion? x less than 6 and x greater than -3

asked by Bob on March 21, 2010
52. ## chemistry

What is the pH of a 0.250 M NH4Cl solution? Kb for NH3 = 1.8 × 10−5. Thank you.

asked by fenerbahce on August 21, 2012
53. ## Chemistry

What is the pH of a 0.0250 M solution of HCN? Ka = 4.0x10^-10

asked by Samantha on May 2, 2011
54. ## math

Given that x = 2log t is a solution of the equation10^(2x+1) -7(10^x) -26 =0. Find t

asked by lindsay on July 10, 2014
55. ## math

px+qy=r 2px-qy=2r find the solution. There are five unknowns here: p, q, r, x, y

asked by Ashley on January 18, 2007
56. ## chemistry

What is the pH of a 0.5 M solution of NaHCO3? Kb = 2.4x10-8 (base)

asked by Randy on November 11, 2015
57. ## math

Find p(p^-1(x)) when p(x)=x^2-4 I tried solving this and I got x^4-x+20 but that has no solution so I'm a little confused.

asked by maath on September 15, 2018
58. ## chemistry

calculate the pH of a 0.100M NH4Cl solution.

asked by amy on March 10, 2016
59. ## Algebra

4. Compare the quantity in Column A with the quantity in Column B. Column A The solution of 2(x-3) = 6x Column B The solution of 3x + 2 + 5x + 6

asked by lizzie on August 7, 2011
60. ## Chemistry

When a solution is made from 1.0 g of KI and 90 mL of water, what is its molarity?

asked by HElp on October 20, 2011
61. ## math

Which number line shows the solution to x

asked by you know it on November 7, 2018
62. ## Algebra

find the solution set for -x^2=-64x

asked by Anonymous on March 6, 2013
63. ## chemistry

What volume (mL) of a 3.23 %w/v saline solution contains 69.1 mg of NaCl?

asked by alex on March 3, 2013
64. ## math

Find the solution(s) of the logarithmic equation ln(x+4)+ln(x−4)=0

asked by avia on February 21, 2016
65. ## Chemistry

What is the hydrogen ion concentration of a solution with pH of 3.4?

asked by Mmeso on September 13, 2018
66. ## Math 116

9/10th (3+8x)+3greater or equal to 15 what is the solution to this?

asked by Allison on September 22, 2011
67. ## Government

Looking for an issue and a solution where the people and the government can help

asked by Em on September 5, 2013
68. ## math

9x^2+4y^2 factoring strategy solution if there is a prime say so - ty:)

asked by maryk on October 10, 2010
69. ## Algebra

What are two points for the solution 12x+14y=70 ?

asked by Ashley on January 21, 2012
70. ## math

Which of the following ordered pairs is a solution of the equation y= -4x^2? A. (-2, 16) B.(1, -8) C. (0, -4)***** D. (2, -16)

asked by nebula🌌 on March 18, 2019
71. ## Differential equation

find the solution of power series (2x^2-X^3)y''+(7x-6x^2)y'+(3-6x)y=0 near zero

asked by Kishan on August 13, 2011
72. ## MATH

How do you go about finding equations to a given solution set?

asked by Fiona on May 10, 2011
73. ## Calculus

Is thsi a solution of an ordered pair (4, -1) 4x = -17 - y 2x = -12 -4y I say yes ? Is this how you do it. 4(4) = -17 - -1 = 2(4) = -12 - 4(-1)

asked by Kelly on January 7, 2008
74. ## math

determine which ordered pair is a solution of y=2x-3.

asked by anna on May 5, 2016
75. ## CHM

Why it is OK to prepare the titrant solution so inaccurately?

asked by Jamika on September 19, 2014
76. ## chemistry

what is the pH of a NaOH solution whose concentraiton is 4.5 * 10^-5 M. HOW WOULD I DO THIS PROBLEM??

asked by Miley on May 15, 2008
77. ## science

heat of solution of ammonia in water

asked by k s agrawal on August 4, 2019
78. ## science

What can particles in solution NOT do because ther are so small

asked by Katherine on November 17, 2009
79. ## matn

JUSTIFIES A STEP IN THE SOLUTION OF AN EQUATION 4n+(7+n)=52 4n+(n+7)=52 (4n+n)+7=52 5n+7=52 5n+7-7=52 5n=45 5n/5=45/9 n=9

asked by JR on October 11, 2012
80. ## chemistry

What is the molarity of OH- in an aqueous solution that is 0.31 M HNO3?

asked by Priscilla on December 3, 2011
81. ## chemistry

What is the molarity of OH- in an aqueous solution that is 0.17 M HClO4?

asked by Ashley on December 4, 2011
82. ## maths

the solution set for the following 1.X3+x2-6x-10=0 2.2x2-4x-4=0 3.x4-x3-4x2+x+1=0

asked by Laila on October 8, 2013
83. ## math

JUSTIFIES A STEP IN THE SOLUTION OF AN EQUATION 4n+(7+n)=52 4n+(n+7)=52 (4n+n)+7=52 5n+7=52 5n+7-7=52 5n=45 5n/5=45/9 n=9

asked by JR on October 11, 2012
84. ## CHEM

Calculate the pH of a .7 M solution of ammonium chloride

asked by Heather on September 22, 2011
85. ## Chemistry Web Quest

How do you recover the dissolved solid in a solution?

asked by Lyne on February 13, 2009
86. ## Mathematics

Solution of middle terms expansion of (2x^2+1/x)^9

asked by Mandy on October 11, 2012
87. ## algebra

5/y-3=y+7/2y-6+1= an equation with extraneou solution. I need help with this problem

asked by angelia on May 20, 2010
88. ## MATH

Decide if the given number is a solution to the given equation. 24/X = 2; 3

asked by Matt 2000 on November 23, 2009
89. ## chemistry

why solution always prepared in HCl and not in HNO3 ?????????

asked by hira on April 14, 2011
90. ## maths

Let S(t) be a solution to the differential equation t dS dt − S = 3 with the initial value S(1) = 1. Which of the following is the value of S(2)? A. 0 B. 2 C. π D. 5 E. −5

asked by Anonymous on October 25, 2018
91. ## Math

Write a division equation that has a solution of -9/14

asked by Anonymous on January 3, 2017
92. ## math

How many grams of a drug are contained in 1L of a 30% solution?

asked by Anonymous on September 28, 2012
93. ## Science

Is toothpaste a mechanical mixture or a solution?

asked by Dana on September 25, 2010

I need to know a quadratic equation that have: 1) exactly one negative solution

asked by Joy on April 1, 2009
95. ## calculus

Given, F(n+1)-12f(n)=0. n≥1, where F(1)=-3 find the solution to the equation.

asked by ..... on January 8, 2017
96. ## chemistry

what is the pH of an .200 M aqueous solution of NaOH?

asked by Anna on November 30, 2010
97. ## Math

Which of the following equations has an infinite number of solution? A. 3x - 3 = 4 -4x B. 2y + 4 - y = 16 C. 7x + 5 = 4x + 5 +3x D. 6y - 2 = 2 (y-1)

asked by SandpitTurtle on January 17, 2014

What is the solution to (4 x 10^3) x (3 x 10^4) written in scientific notation? a)) 12 x 10^8 b)) 1.2 x 10^7 c)) 1.2 x 10^8 d)) 12 x 10^7 **

asked by Jonie on November 20, 2016
99. ## chemistry

How do I make a 6M NaOH solution? (25mL)

asked by Alex on January 19, 2008