# 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 395
1. ## Precalc

how to solve for x: 500e^(0.3x) = 600 Steps please.

asked by Amy on January 26, 2011

3 points on a line Q,P,R (In order) if QP =2x and QR =2x+1 and PR =21 Solve for x

asked by Sammy on September 20, 2010
3. ## Algebra II

Solve the triangle for angle B. 𝐴=102˚, 𝑎=15, 𝑏=9

asked by Anonymous on May 9, 2016
4. ## math problem

asked by Avery on November 20, 2011
5. ## College Algebra

Solve for x: 3^(2x)=14 We've gotten: 2x=log(subscript 3)14=2.4 Is this two answers, or what?

asked by Angela on August 5, 2009
6. ## 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
7. ## Algebra

Solve (log base{3} +(log_{3} x)) = -1. x =

asked by mike on July 1, 2015
8. ## Math

3{radical symbol48/3 - 2} how would i solve this problem

asked by Anonymous on January 29, 2015
9. ## algebra 2

2y-5 over 6 - y-5 over 4 equals 3/4. Solve this rational expression.

asked by Sabrina on May 8, 2008
10. ## Math

Use the quadratic formula to solve the equation. -x^2 + 5x = 3

asked by DionRimmings on January 29, 2016

asked by cori on December 16, 2012
12. ## College Algebra

Solve the equation. e^5x = 2 a. 2/5 e b. in2/5 c. 5 in 2 d. in5/2

asked by coried on August 26, 2009
13. ## Math rates

1,680 kilobytes in 4 minutes how do i solve this

asked by Chyanne on May 9, 2012
14. ## algebra

105/(-20+15) ------------------- 45/(-9)+12 Plz help me to solve this question. Thanks!

asked by Pam on September 22, 2014
15. ## Trig

Solve:cos^2x=1 for 0 < x is less than or equal to 2pi

asked by Tabitha on January 20, 2011
16. ## Math

I am sorry But how can I find this answer? solve the equation 2k= 26

asked by Mary on November 6, 2018
17. ## algebra

solve by factoring a^2 -121 = 0 (a-11)(a-11) is this correct?

asked by Maria on July 26, 2009
18. ## maths

solve the equation using cramer's rule. 3x+2y=12 and 2x+3y=7

asked by Joseph on May 27, 2018
19. ## calculus

solve the following differential equation: y' + (y)tanh(x) - 2e^x = 0

asked by Christine on May 7, 2008
20. ## Trigonometry

How do you solve this systems of equations algebraically? y=x^2+4x+4 y=4x+6

asked by Jamas on November 26, 2011
21. ## math

solve and express in lowest form : 5/12+3/12+1/12/16

asked by rai on January 30, 2016
22. ## pre algebra

How do tou check and solve the equation -5w+2w+6w=-4+9?

asked by Amber shall on January 22, 2011
23. ## 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
24. ## calculus

how do I solve for this V=πintegral from1 to 2 (10-e^x)^2dx

asked by Anonymous on December 1, 2018
25. ## Math

Not sure how to solve this problem??? X + y = 150 .30x +.60=75

asked by Keenan white on February 1, 2011

solve by expressing each power by the same base. 2^(1+2x)=32

asked by tashs on February 18, 2009
27. ## Algebra

Solve -16t^2-8t=10 by completing the square

asked by Marie on September 22, 2014
28. ## Algebra

Solve for a if the line through the two given points has the given slope. (4,a) and (-2,-2a), m=-1

asked by Keonn'a on September 16, 2018
29. ## math

-18 > x/6-10 let "x" be the unknown number solve the inequality.

asked by kendall on February 4, 2010
30. ## Pre-Calc

How do I solve this via partial fraction decomposition? (x^2+9)/(x^4-2x^2-8)

asked by Micki on April 12, 2013
31. ## calculus

solve for dy/dx=(x^2+y^2)/xy by substitution. Plz help step

asked by ... on December 28, 2016

how do you solve and graph variable inequalities?

asked by ryan on February 12, 2009
33. ## Math

Solve the equation. 1. y-5/3 =1 A -2 *** B 8 C 18 D 6 2. 6x + 29 =5 A -4 B -18 ** C 204 D -144

asked by Louis on September 18, 2016

solve and check each of the following quadratic equation (1)x^-9x=0 (2)x^+8x=0 (3)x^=6x (4)x^=-3x

asked by tanya on February 15, 2012
35. ## Physics

solve for h in the equation for density P= M/V and V= pi r squared h

asked by tom on August 28, 2018
36. ## simple math

is there any trick I can use to solve the question below without expanding: 2^3 + 2^4

asked by Lena on February 14, 2009

1/2.165 = sqrt x/131.29. I am not sure how to solve for x.

asked by Hannah on February 5, 2012
38. ## math

Please solve these using the quadratic formula: 1. 3x^2-4(x-2)=0 2.a^2+2(a++5)=0 3.x^2-3(2x+3)=0 Thank you ^____^

asked by ghenny on September 11, 2014
39. ## Chemistry

1/2.165 = sqrt x/131.29. I am not sure how to solve for x.

asked by Hannah on February 5, 2012
40. ## Geometry

Cross multiplication 20+x = 6 ----- - x 5 Idk how to solve this with 2 x's

asked by Andrea on May 13, 2015
41. ## math

Can somebody help me solve this problem for x using the distributive property? 1/2(4x+10)=16 I got x=9

asked by brandy on February 5, 2015
42. ## MATH

Solve the equation for ex, where 0

asked by Anonymous on August 16, 2009
43. ## math

solve d/3> or= 6 i mult. both sides by 3/1 d> or=18 Is this correct? Thanks

asked by b6 on January 6, 2013

solve and check each of the following quadratic equation (1)x^+x-6=0 (2)x^+8x+15=0 (3)x^+2x+1=0 (4)x^-3x-4=0 (5)x^-4x-32=0

asked by tanya on February 15, 2012
45. ## math

what fact family would help solve 15 divided by 5?

asked by Pam on February 1, 2010
46. ## precal 2

use the law of cosines to solve the triangle a=55, c=72, b=25

asked by raven on July 31, 2011
47. ## math

let s be a positive number. Solve the following equation for x. √a^3√a^4√a^3=a^x

asked by joe on September 22, 2010
48. ## math

use inverse operation to solve h/5 = 500

asked by Mia on April 21, 2014
49. ## algebra

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

asked by zachary stanich on February 15, 2012
50. ## Precalulus

Kindly help with this question. Thanks. Solve the following equation for x. -2/-3x - 7 - 3/2x - 1 = 3/2

asked by excel on January 23, 2017
51. ## maths geometry

solve for x acute angle scalene

asked by Anonymous on May 18, 2016
52. ## algebra 1

solve by substitution. 0.5x+0.25y=36 y+18=16x

asked by rachel on November 21, 2011
53. ## Math

Solve the equations below. Check your solutions. 3x-5/2=4x+1/4

asked by Anonymous on January 31, 2016
54. ## Algebra

I have done this problem alot and still don get it can some one help me?? Thank you Solve 3/x-9 + 6/(x-9)^2

asked by Danny on May 3, 2008
55. ## Intermediate Algebra Solve

Solve: -1/3 - 5/4t = 3/4 - 1/6t would I cross multiply? (-1)(4t) - (3)(5) = (3)(6t) - 4 I am stuck here, please help.

asked by Jennifer on February 12, 2009
56. ## math

asked by devon on January 5, 2013
57. ## algebra

solve the equations 21E-7=0 I came up with 0.33 am I right or wrong

asked by Mary on May 2, 2014
58. ## Math

How would you solve this problem? cos x/1+sinx

asked by Kelly on February 7, 2015
59. ## algebra

Solve the equations symbolically. 3x+7/4 + 3x-7/5 =-8/5 6(7x-1)+5=24+3x How do I go about solving them?

asked by Anonymous on January 31, 2013
60. ## algebra 2 honors

how do you solve problems like : log3x-log5=1

asked by vanessa on February 11, 2009
61. ## Math

solve 3(4)^x for x=2.3 Do I do the 3x4 part first, or do I raise 4 to the 2.3?

62. ## Math

solve for h A= 1/2(a +b)h I've tired over and over but still can't find the answer

63. ## algebra 1

Use the Quadratic Formula to solve the equation: 5x^2 + 9x - 2=0 -2,1/5?

asked by Lily on September 23, 2010
64. ## math

use an array to explain how you can solve 15 x 6 using facts that you already know

asked by jeff on February 7, 2015
65. ## Math Help!!!

How do I solve for sin24=CD/BC if BC is 15,052.07464? Thanks!

asked by Annie on May 7, 2016
66. ## Math

I need to solve for t in the following expression. A/(1+B^t/2) = C using logarithms. how do I get started

asked by Claudia on October 10, 2010
67. ## 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
68. ## Math

Solve xy' + y + y^2 = 0 for y(1) = 2 --------- I isolated y' such that: y' = (-y^2-y)/x But I'm not sure what to substitute from here I could do v = -y^2- y and v' = -2yy' - y' but I'm not sure this would help

asked by Essan on August 18, 2018
69. ## Math

How to solve this: ((x-3)(x+2))/((x-1)) < 0 I don't understand since theres x-1 in the denominator

asked by Amy~ on September 21, 2010
70. ## math

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

asked by hannah on November 23, 2018
71. ## algebra

x^2-22x=10 solve by completing the square

asked by akaray on February 2, 2010
72. ## Math

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

asked by NR on January 23, 2017
73. ## algebra 1

|2x+9|

asked by hips on April 25, 2013
74. ## Math

The function f is defined by f(x)= x^2-2x+3 if x≤1 and f(x)=-2x+5 if x > 1 Is f continuous at x=1? How do I solve this

asked by Anonymous on September 3, 2018
75. ## 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
76. ## Algebra

asked by mary on March 1, 2014
77. ## math

how do you solve this problem: 147.5% as a decimal

asked by patricia on August 10, 2009
78. ## log

How do you solve 6log2x = 13 I got log2x^5 = 13 but I don't know what to do next. Would it be 2x^5 = 13^2 HELP. Thanks.

asked by Chopsticks on March 4, 2009
79. ## math

Solve the equation sin 5/2¦È = -1/2 for 0¡ã ¡Ü 0 ¡Ü 180¡ã

asked by kudu on February 6, 2015
80. ## trig

use pythagorean theorem to solve for the value of x and y of a 60-60-60 degrees.

asked by au on January 8, 2013
81. ## Chemistry

Please help me solve this empirical formula.Im so confused C=58.5% H=4.1% N=11.4% and O=26.0% Thank you so much

asked by Roger on May 3, 2014
82. ## Triginometry

Solve the following equations algebraically and check. y=2x^2+2x+3 y=x+3

asked by Christian Bale on January 14, 2010
83. ## algebra

(2-x)/(2x+6)+ x/(x^2-9) Can some one please help solve this one because I stuck? I don't know how to sole this, so please somebody help!!

asked by jessica on September 11, 2010
84. ## graphing

how do you solve linear systems by graphing like x-y=2 x+y=-8

asked by nicole on April 19, 2009
85. ## pre-cal

what are the steps to solve sec y sin (pi/2-y)=1

asked by Lori on January 12, 2010
86. ## algebra

solve (x+16)*(x-19)*(x+3)>0 The soltion set is{x| } I do not understand this one.

asked by Jack on May 14, 2008
87. ## Math- Algebra II

x^2-4x+12=0 Complete the square to solve for x. Okay I know how to do up to here: (-4/2)^2 -12=x^2-4x(-4/2)^2 2-12= x^2-4x+2 -10= DO I FACTOR IT?

asked by Christina on January 5, 2011
88. ## alg2

solve for 10/x^2-2x + 4/x = 5/x-2 3x/x+1 + 6/2x = 7/x 8(x-1)/x^2-4 = 4/x-2 check for any extraneous solutions! thanks!

asked by skye on May 19, 2012
89. ## 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
90. ## Algebra 2

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
91. ## MAth

how to solve this: ((x^2)/(275625)) + ((78400)/(122500)) = 1

asked by Amy on December 18, 2010
92. ## Math

Solve for X (1/2)^2-x=(32)^x+1 I'm very confused on how to begin this problem.

asked by John on January 28, 2016
93. ## Math

asked by Peter on April 20, 2008
94. ## math

solve this in 3 variables.. i don't know where to start,,:(( y/4+z/3-x/2=4 y/2-x/6+z/15=2 y/8+z/5-x/3=2

asked by rose on January 15, 2011
95. ## Quick math help

How would you solve this factoring with two variables? -14x^2-7x+21

asked by Anonymous on February 24, 2014
96. ## 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
97. ## Algebra

How do you solve x/a - 1 = y/b for y? Algebra question I'm stuck on. Thanks!

asked by This Girl on November 19, 2013
98. ## algebra

Solve using the multiplication principle. 3/4x=9/10. Would the answer be 2/5?

asked by babs on August 5, 2011
99. ## 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
100. ## math help

can you help me solve the equation 3x - 3 = -18?? PLZ HELP MEEEE