# 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 399
1. ## inequalities

I am absolutely stuck on this inequality. It is: 2(3x-5)>2x+6. I'm not quite sure how to solve it.

asked by Janelle on February 14, 2008
2. ## math

asked by indira on September 6, 2018
3. ## algebra

Solve 2x^2 = 9x. Round to the nearset tenth. a) x = 0 or x = -4.5 b) x = 1.5 or x = 3 c) x = 4.5 d) x = 0 or x = 4.5

asked by Ami on June 5, 2010
4. ## maths

solve the following pair of simultaneous equations. 2x-3y=13 3x+y=3

asked by tia on October 19, 2010
5. ## Calc

Solve the equation for x. arcsin(sq. rt.(2x)) = arccos(sq. rt(x))

asked by Erica on December 9, 2010
6. ## calculas

Solve following equations ¡¼tan¡½^(2 ) x-5tanx=-6

asked by preet on March 5, 2013
7. ## Pre-Calculus

Solve the equation over the interval [0,2π) 4csc^2+1 = 0

asked by Taylor on March 9, 2009
8. ## Algebra 2

s=prt solve for t Don't know where to start help!

asked by Becky-G on September 23, 2016
9. ## Algebra

Solve the following equation: 9z^2+34=36z The solutions are:

asked by Tony on October 26, 2016
10. ## Algebra 2 (Diophantine Equations)

Solve 5x + 12y = 47 using Diophantine equations.

asked by Peter on October 7, 2011
11. ## math

asked by devon on May 16, 2012
12. ## Math

Use inverse operations to solve each equation. 1. 1.6+y=-7.3 2. -2/3n=12

asked by Come save me on October 5, 2017
13. ## Algebra

Solve for x in terms of a and b (b-a)x=3x-(5/a) I can't figure out how to get the x alone with out getting (3x)/(b-a). Can anyone help explain?

asked by Connor on January 12, 2010
14. ## Math 221

Solve the inequality for v. 6v+6 > -30 - >Greater than or less than symbol -

asked by Karen on July 20, 2014
15. ## Algebra

asked by Lucille on February 17, 2017
16. ## math

easy way to solve linear equations

asked by jen on October 20, 2010
17. ## algebra I

how do I solve for 16x^2+56x-120

asked by Julia on March 6, 2013
18. ## algebra

Find the root (solve) of each equation. a)1/3 (2w-6)=-10 b)3a-7/4=4a+5/3 c)3k/2-k+3/3=8-k+2/4

asked by bev on October 27, 2009
19. ## math

x^3=4x solve for x I think i have to divid both sides by x giving x^3=4 but am not sure what I need to do next.

asked by Debbie on March 10, 2009
20. ## Algebra

In the graphing problem 3y=2x-9 m=? b=? What do m and b stand for? How do I solve?

asked by Susan on February 24, 2011

how do i solve this equation? square root of x^2-25=x-1

asked by anonymous on April 27, 2009
22. ## math 115

2/7 over = 1.6 20 over r solve for r not looking for just an answer, would appreciate the formula for solving, thanks

asked by Bob on November 4, 2009
23. ## math

solve for y' in the function y=sec^3(2x)-3sec2x

asked by mica vega on July 14, 2015

how do you solve this??? 2(x-3)=-x+3+5x i don't get distributing stuff

asked by alicia on December 15, 2009

What does it mean to solve a quadratic function by graphing?

asked by Anonymous on September 29, 2014
26. ## Math

I need to know how to answer this. 7-8b where b=-3 Please help. I have two different answers Substitute b and solve: 7-8(-3) 7+24 (-8 x -3 = + 24) 31

asked by Jim on March 22, 2007
27. ## Geometry

1. Let S be between R and T. Use the Segment Addition Postulate to solve for m. RS = 2m + 2 ST = 3m + 3 RT = 15 A. m = 3 B. m = 2 C. m = 9 D. m = 4

asked by Lauren on February 2, 2018
28. ## Math

Solve for unknown quantity in each proportion K/3 = 3/9 A 1 B 3 C 9 D 27

asked by Kyra on May 11, 2018
29. ## algebra

-6q^2 -40q - 50 how do you solve this i am factoring and having problems

asked by joyce on July 23, 2010
30. ## Math

solve: y(squared)-144=0 please help, for like the other one, i have this on my final too. Thank You!

asked by EAW on January 13, 2008
31. ## Algebra

how would I solve this on a equation to graph and what would my slope be? -3x-2y=18 and 3x-y=0

asked by Alea on November 12, 2015
32. ## intermidate algebra

solve equation(rational expression) 3/10=5/x 3x=50 x=50/3 x=16 2/3 is this right.

asked by Keaton on May 18, 2010
33. ## math

i need to solve 2 step inequalities i have a quix on it!!

asked by hannah on November 23, 2018
34. ## math

asked by jessica on March 3, 2010
35. ## Check my precalc

what is the f inverse of f(x)= ln(x-3) I got y= e^x - 4 Solve 8 times 10^(2x-7)=3 I do not know how to do this. Do i get 8 and 10 with the same base? How? Thanks!

asked by Rebekah on November 18, 2012
36. ## trig

Solve the right triangle with the given sides and angles. a = 3.0, B = 31.0°

asked by tony on June 21, 2013
37. ## math

I am solving a problem and have -cos(a)=-1/2. How do I solve for a?

asked by Lyndsay on February 28, 2015
38. ## URGENT MATH help

(x^2y^6-3)^2 .....PLEASE HELP ME I HAVE NO IDEA HOW TO SOLVE THIS IVE BEEN DOING IT FOR HOURS

asked by jake on February 18, 2009
39. ## pure maths, accounting,business studies, economics

Im in grade 10 and i want to write my homework.how to solve for x?

asked by siyanga on March 7, 2016
40. ## Math

how do i solve: 200 = 1.862t^2 - 50t - 2

asked by Jackie on March 26, 2015
41. ## Algebra 2

Solve each equation below for x. (Use logarithms.) 10^(2x^(2)-5x+11) = 10000 9^(2(x-1)) = √(27)

asked by Peter on February 19, 2012
42. ## Dooley

how do i solve the inequality of 26s is less than or equal to 3s + 69

asked by N'Dai on March 10, 2011

44. ## trig

Solve R=3(1-sin theta) and graph

asked by Anonymous on December 8, 2014
45. ## math

how would you solve [(*square root*125)^4]^1/6

asked by Cynthia on February 28, 2008
46. ## Math

Solve the equaton by completing the square. 4x^2-8x-3=0

asked by Ashley on August 3, 2011
47. ## math

solve the quadratic equation xsquared - 2x - 3 = 0

asked by josh on November 4, 2009
48. ## AP Physics

mgh=1/2mv^2, solve for the variable v

asked by Lisa on August 1, 2010
49. ## Math

solve sin(2θ)+1=0 on the interval 0≤θ≤2pi

asked by Julie on May 24, 2010
50. ## Pre-Calculus

How do you solve this quadratic function? f(x) = −x2 + 10x

asked by Amie on October 4, 2011
51. ## trigonometry

solve sin(2θ)+1=0 on the interval 0≤θ≤2pi

asked by Anonymous on May 24, 2010
52. ## Algebra2

Solve the equation 3^5sqrt(x+2)^3+3=27 My answer is 30

asked by Steve on February 3, 2017
53. ## Math

Solve for X: 9.2x + 5.514= 158.234

asked by Amy on August 22, 2016
54. ## Math

Solve for x 9.2x + 5.514= 158.234

asked by Amy on August 22, 2016
55. ## Math - Trig

Solve for exact or to 1d.p of x E [0 ,2pi] 4cos^2x-3

asked by Anonymous on July 18, 2016
56. ## Trigonometry

Solve the triangle using the law of cosine: a= 5 b= 6 y= 35

asked by Hannah on July 8, 2013
57. ## Math

P(n,3)=5! Solve for n?? Help, please! I did n!/(n-3)!=5! n(n-1)(n-2)(n-3)!/(n-3)!=5! cancelled out (n-3)! was left with n(n-1)(n-2)=5! n^2-n(n-2)=5! n^3-n^2=5! n^3-n^2-120 What do i do???

asked by susy on October 20, 2015
58. ## Trig

Solve for [0,2pi) 2cos4x + sqrt3 = 0

asked by Anonymous on March 4, 2016
59. ## Math

Solve using Augmented Matrix Methods -4(x1) + 6(x2) = -8 6(x1) - 9(x2) = 12

asked by Christopher on October 22, 2012
60. ## Math problem

having problems working this problem out please solve 49 5/2

asked by Lavern on March 11, 2012
61. ## Calculus help plz

Using the first rule of derivative find 8(x-y)12?? And how can i solve these y^x+x^y=17,x+y=5

asked by Franklin: on October 24, 2015
62. ## Math

Solve each problem. Blank x 10=2 tens

asked by Amari on October 2, 2014
63. ## math 2

how do you solve the fowllowing question 6+(2x-7) fraction 2 over 3 =31

asked by aliyah on June 12, 2012

Solve 2x+1=2^x to find the other (not 0,1) intersection. Truly vexing. Thanks.

asked by H Masri on November 5, 2008
65. ## polynomial

can someone solve this one aswell? ax + 2ay + bx + 2by a(x + 2y) + b(x+2y) = (x+2y)(a+b)

asked by mike on May 15, 2007
66. ## math

Solve the quadratic equation. 3x^2 - 15x + 18 = 0

asked by jessica on November 5, 2009
67. ## math

using the product rule: 5.4*10^6/2.7*10^4=5.4/2.7*10^6/10^4=2*10^2 solve plz.

asked by plz help on May 12, 2012
68. ## Algebra 2

solve square root 2x-5 =7 the 2x -5 is under the sqaure

asked by Zach on March 11, 2015
69. ## Algebra 2

solve square root 5-2x + 5 =12 5-2x under the sqaure

asked by Zach on March 11, 2015
70. ## Algebra 2

solve 3 square root 2x +1 =3 2x +1 under the sqaure

asked by Zach on March 11, 2015
71. ## precalculus

solve for the domain, interval notation f(x)=(x+8)/(x^2 -49)

asked by barney on January 28, 2019
72. ## math

solve for x 3x^2 + 2x - 5 = 0 you foil it and get: (x - 1)(3x + 5) but i don't know what to do from here. please please pleasee help.

asked by sarah on September 2, 2008
73. ## math

Solve the initial value problem d^2x/dt^2+2dx/dt-3x = 0, x(2π) =1, x(2π) = 13

asked by gourav on March 21, 2015
74. ## Math

solve: x-squarerootx-2=4 and write 1+4i over 1-i in the form a+bi

asked by Maria on November 3, 2013
75. ## precalculus

how to solve; Xsq + ysq-4x=0 x^2 -4x + y^2 =0 x^2 -4x +4 + y^2 =4 (x-2)^2 + (y+0)^2=4 look like a circle to me.

asked by yvonne on May 17, 2007
76. ## algebra

Solve using the addition and multiplication principles. 8-8y-5y < 47

asked by Linda on September 7, 2009
77. ## Math

Use an equation to solve the problem. What is 57% of 11? A. 11 = 0.57 • n; 19.3 B. n = 57 • 11; 627 C. n = 0.57 • 11; 6.27 D. 11 = 57 • n; 0.19

asked by Anonymous on November 27, 2018
78. ## Math

asked by Sydney on May 17, 2009
79. ## math

Solve the following polynomial inequalities. A) x^3 - 5x^2 + 2x ≥ -8 B)2(x3 - 2x2 + 3) < x(x - 1)(x + 1)

asked by rick on May 10, 2012
80. ## Fractions

solve 9/10(3+8x)+3¡Ý15 How do you multiply the fraction?

asked by Abby on September 23, 2011
81. ## Algebra

I need help with using the quadratic formula to solve this equation: 2^x2-2x = 8

asked by Alexander on September 2, 2008
82. ## Algebra

I'm having trouble with this literal equation. r^2/r^2+a^2=w/x solve for w. Thanks so much for the help

asked by Elva on September 4, 2013
83. ## algebra 21

Solve the equation. If necessary, round to thousandths. 3^(2x + 1) = 27

asked by renee on July 13, 2011
84. ## geometry

I have a quadrilateral which is a rhombus and E is at the intersection and DE =2x+4 and DB=6X. How do I solve for x and DB?

asked by shaelyn on April 5, 2011
85. ## math

Solve and graph the inequality 5 less than and equal to m/-3+18

asked by shima on November 24, 2016
86. ## metric conversion

43.3mm= ______dm how do you solve this equation?

asked by Keegan on January 6, 2008
87. ## math

Solve using the addition and multiplication principles 8x+2-7x

asked by lana on May 7, 2010
88. ## algebra 2

Solve the equation. If necessary, round to thousandths. 3^(2x + 1) = 27

asked by sky on July 13, 2011
89. ## precalc

solve the equation cos(x) + sin(x) = 1

asked by help! on April 26, 2016
90. ## Precalc

Solve the following equation for x in terms of ln and e. (2e^3)-6-(16e^-x)=0

asked by Aly on March 3, 2014
91. ## trig

How do i solve Cos (4x)(2+tan^2X0 = 8?

asked by Anonymous on July 14, 2011
92. ## Algebra

Solve the equation and inequalities f(x)=0 f(x)>0 f(x)

asked by Mackenzie on October 29, 2012
93. ## Algebra, explain how to please

Can someone explain to me how to solve -14=2/5(9-2b) It would be greatly appreciated thank you

asked by June on October 17, 2010
94. ## algebra

I have to solve this equation using substitution. 3x+5y=10 2x+ 1/2y=24 This is all one problem

asked by Erica on March 10, 2013
95. ## Math

Solve: Log5(x-2) + log8(x-4)= log6(x-1)

asked by NR on January 23, 2017
96. ## Math

Part C: How can you solve the equation 8x = 2x + 2 graphically?

asked by Kayla on December 19, 2015
97. ## algebra

this is the hardest question people said they can not solve it

asked by zachary stanich on February 15, 2012
98. ## Math

-(-(-)(-)(-10x))=-5 solve for x A. X=.5 B. X=.7 repeating C. X=-.5 D. X=1 Please help i am so confused.

asked by Anonymous on October 5, 2016
99. ## Algebra; MAJOR HELP

Solve the equation. Provide an explanation please. s^2-7s+14=2

asked by Ari on February 26, 2012
100. ## Algebra

-0.2x+12x+11 solve by using quadratic equation

asked by Lisa on June 14, 2010