# 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 433
1. ## math

solve for x x^2+18x+4=0 is the answer -18 + or -square root symbol 90

asked by Allison A on November 22, 2011
2. ## Algebra

Solve the quadratic equation by the square root property (2x - 1)2 = 25

asked by Vilma on May 26, 2012
3. ## Algebra 2

Solve each equation by graphing. Where necessary, round to the nearest hundredth -x^3+3x+4=0

asked by Christina on January 25, 2012
4. ## Calculus [Implicit Differentiation]

If √x+√y=10 and y(16)=36, find y'(16) by implicit differentiation. If somebody could please help me by explaining how to solve this problem ! Thank you (:

asked by Ali on November 17, 2012
5. ## math 1A

hey im having trouble with these math problem . if a=2 and d=7 6d-3a =? how do you solve and get the answer ?

asked by stephanee on July 10, 2011
6. ## Algebra 2

Solve each equation by graphing. Where necessary, round to the nearest hundredth -x^3+2x^2+1=0

asked by Christina on January 25, 2012
7. ## math/trigonometry

solve secx/2=cosx/2 over the interval[0,2pi) without using a calculator

asked by jake on April 14, 2008
8. ## Trigonometry

Solve the equation for all values of x. -2cos²x-sin x+1=0, on the interval [0,2π).

asked by AwesomeGuy on February 28, 2013
9. ## Math Help

Solve the proportion. Where necessary, round to the nearest hundreth. x/3=10/11 A. 9 B. 30 C. 2.73 D. 0.30 Is the answer C? Thank you

asked by callie on November 20, 2014
10. ## Math - solving for a variable

solve 2x+3y=12 for x i don't get this one and i am having a hard time solving equations like these. Help? Thank you!

asked by Nathaly on September 5, 2018
11. ## math

The volume of a cylinder of radius r and height h is V=πr^2h.Solve for r. Please helppppp!!!!

asked by Andrea on April 13, 2018
12. ## pre cal

how do you solve f(x)= G(X) and find the points of intersection of the graphs of the 2 functions f(x)= x^2 + 5x+ 13 g(x)= 19

asked by xyz on October 26, 2011
13. ## pre cal

how do you solve f(x)= G(X) and find the points of intersection of the graphs of the 2 functions f(x)= x^2 + 5x+ 13 g(x)= 19

asked by xyz on October 26, 2011
14. ## math

Solve the equation z^2 + 2j = 0 Then convert solutions to Cartesian form.

asked by Alice on April 12, 2014
15. ## math

I have to insert brackets so that this equation is a true statement. I was able to solve the other 3 and could not get this one. Please help. Thanks -20 + 4 x 2 + 7 - 35 = -19

asked by Jay on October 29, 2012
16. ## jake

2. Solve this equation: 80 = 3y + 2y + 4 + 1. A. y = –15 B. y = 1/5 C. y = 75 [D. y = 15] i don't realy know if that is correct because i think it could be negative like in a please let me know

asked by math on February 14, 2012
17. ## Calc

[9:52:53 PM] Pardeep Narang: y''+2ty'−4y=8 y(0)=4 y'(0)=0 i need to solve this using laplace transforms

asked by Mark on April 11, 2011
18. ## algebra

Solving inequalities and graphing: y

asked by Cathleen on February 2, 2011
19. ## math

How do you solve? what is the area if it is 32. times smaller that 3003.014cm?

asked by Sammy on March 18, 2015
20. ## algebra

ms.sue, how would you solve the square-root of two manually, without a calculator?

asked by Alisa on July 6, 2010
21. ## chemistry

how do you solve to find the molar mass for calcuim nitrate

asked by hunter on January 27, 2010
22. ## Algebra

How would you solve this problem: Slove y=1/4-1 if the domain is(-4,-2,0,2,4) Could someone please explain to me how to do this? Thank You in advance for your help!

asked by brooke on January 27, 2010
23. ## math 100

Solve, express your answer in interval notation absolute value of 3x-10 is > 2

asked by sonja on March 6, 2014
24. ## Algebra 1

Can someone help me solve this problems please? Thank you very much 7x+9>1x+3= Can someone help me undertand the steps to solving this problem, please.

asked by Erudita on January 3, 2011
25. ## math-precalculus

help me please.. and please provide steps so I can follow. sec(2ϴ)=3... solve for all solutions on [0,2π]

asked by Anonymous on May 22, 2017
26. ## PRE - CALCULUS

Solve the quadratic equation by the square root property. (2x + 5)2 = 49 A. {-6, 1} B. {0, 1} C. {-27, 27} D. {1, 6} d?

asked by Ciara on April 8, 2015
27. ## math

How do I solve: write 45.6 as a percent and a fraction in simplest form.

asked by Kyle on January 27, 2010
28. ## math

Im a little confused can someone please help? Solve: -7x-24=-26 1/3 This is what i did, not sure if I did it right. -7x-24=-26 and 1/3, -24 from both sides -7x= 2 and 1/3, then divide by -7 and got x= -2 and 1/3 over -7 I have no idea how to right that so

asked by =) on August 10, 2011
29. ## Algebra

Can someone please tell me how to solve this problem? Trying to help a teen who is staying with me with their homework, but I am clueless. Thanks.

asked by Pam on May 16, 2008
30. ## Additional Mathematics

Showing your working clearly, solve the following simultaneous equations: y+5x=3 2x^2-1=3xy+y^2

asked by Victoria on December 18, 2012
31. ## math

how do you make a ratio table to solve a word problem ?

asked by alex on March 2, 2009
32. ## dividing with polynomials

solve by using polynomial division(16ab^3c-10ab^2c^2+12a^2b^2c/(4a^2b) i always get 4b^2-2b+3b+-2c^3/4a^b

asked by Anonymous on October 19, 2011
33. ## Algebra- is my answer right

Solve the following inequality. (x-4)/(-x+2)>0 Write your answer using interval notation. x4 Thanks

asked by Rachal on February 2, 2011
34. ## Algebra 2 ..

Solve by completing the square. 5x^2+10x-7=0 My answer: x= -1+ or - 2sqrt.of 10 all over 5

asked by Anonymous on December 26, 2012
35. ## Math

My teacher says to create a St. Ives poem and solve it, but I don't know what to do. Help?

asked by Sora on September 15, 2014
36. ## calculus

Find an equation(s) of the circle(s) described. Tangent to x + y = 0 and x - y - 6 = 0; center on 3x - y + 3 = 0. How do you solve this?

asked by hfdsgds on March 18, 2012
37. ## Math

Find approximations of the given value f(x)={4; 4>x {x^2 2

asked by Ann on February 5, 2012
38. ## Algebra

Systems of equation 1. +2y=5 8 -6y=3x-15 2).p-2q=4 2q=p+2 Solve the equations? I am stuck on how to do these last to problems thanks for the help

asked by Jessica on January 26, 2014
39. ## math

x^2=8x-9 solve by completing the square to obtain exact solutions

asked by amber on September 12, 2012
40. ## Algebra 1B

solve #27 page 669 (4a^2-6+3a)/(7+4a) my answer is 4a^2+3a*6 over 4a+7 but I need to use long division please help

asked by Bunny on June 12, 2017
41. ## Math

Hello, I need help solving two systems of equations. I'm not sure how to solve them. They are: 7w+e=8 e+5=9 And the second one is: 7e=107-6d 7e+8d=117 Thanks!

asked by Julie on September 8, 2016
42. ## alg

solve log 3x + log9=0 round to nearest hyndredth if necessary

asked by jerson on June 8, 2008
43. ## science

solve this puzzle...... LLL (relating to energy resources)

asked by Yosimitee on November 19, 2007
44. ## Math

Solve the equation. Round to the nearest tenth if necessary. x2 = 169

asked by Derwin on March 22, 2012
45. ## Math (Please help ASAP)

How do I solve this equation (q+p^2-33p=9) for the point of elasticity in terms of p? Thank you!

asked by Tom on April 8, 2015
46. ## Math

how will i solve if there is 2 variables? (Subtraction of RationalAlgebraic Expressions) 5 - xy 14 + 8xy ------- - -------- = ? 9z 9z

asked by Myrvyne on September 11, 2013
47. ## alg

solve equation g+4/g-2=g-5/g-8 last one still don't get answer my teacher got was 14, however i got 22.. what was my mistake?

asked by jerson on June 9, 2008
48. ## Math

Use log table to solve these; 2.647*0.00921 / 0.05738

asked by Anonymous on October 28, 2017
49. ## Pre-Calculus

Solve the equation by finding the square root. 4u2 + 4u + 1 = 75

asked by Pablo on November 1, 2010
50. ## Math

Use the Properties of Equality to solve each equation. 1. e + 7= 15 a. 22 b. 8*** c. -8 d. -22 2. r + 18 = 26 a. 8*** b. 6 c. 44 d. 54 3. a - 6= 19 a. 25 b. 13*** c. -13 d. -25 4. b - 3= -4 a. 7 b. 1 c. -1 d. -7*** I am having most trouble with the last

asked by Anonymous on October 27, 2016
51. ## Algebra/Distributive Properties

Solve these fraction equations: 2/3 - 8/9 = c/6 z/3 + 1 = z/2 - 3 Use the distributive property to simplify. 1. -5(a + 2)

asked by Alex L. on December 8, 2011
52. ## algebra

Using factoring and zero-product property solve: 4a^2 -10a +6=0 Thank's a lot.

asked by Jack on December 26, 2016
53. ## math

I need help with this problem. Solve the equation using the addition property of equality p-1=4

asked by cora evans on January 20, 2014
54. ## Math

For the arithmetic sequence (2 - x), (-6 + 2x), (x + 2), solve for x and find t10. Would I have to start off like this below::: an = a1 + (n - 1) d d = (-6 + 2x)-(2 - x) = (x + 2)-(-6 + 2x)

asked by Anonymous on December 27, 2010
55. ## Calculus

(1,1)(2,1)(2,3) mirror around y-axis & revolve solve with Shell and washer please and thank you

asked by Anonymous on June 13, 2017
56. ## Math question

Solve: x^-2 - x^-1= 5/4 I multiplied all terms of your equation by 4x^2 to get 5x^2 + 4x - 4 = 0 I get (-2+/-2sqrt6)/5 is this correct?

asked by Shawn on November 9, 2008
57. ## math

Let 2^a = 5 and 2^b = 7. Using exponent rules, solve the equation in terms of a and b. 0.4^x = 343

asked by emily on April 14, 2013
58. ## algebra

how would you solve: Find the sum of the first 12 terms to the earest hundreth 6 + 2 + 2/3 +...

asked by Nacy on September 3, 2011
59. ## Math

How do you solve this equation? The answer is suppose to be -0.7 Thanx for you help. Greatly appreciated -5x\9=7/18

asked by Madison on January 29, 2010
60. ## math

how do you Use the Distributive Property to write an equivalent problem. then solve

asked by kassie on December 24, 2010
61. ## math

The lines a and b intersect at point D. What is the value of z? z = Can you please help em solve im really stuck and confused?

asked by Marc on January 26, 2016
62. ## Redland ES

6 children share 5 small pizzas equally? How do I solve this?

asked by Annabelle on January 22, 2014
63. ## Math Help!!!

Solve the proportion. Round to the nearest hundreth, where necassary. 9/4=?/12 A. 54 B. 36 C. 45 D. 27 D?

asked by Callie on November 11, 2014
64. ## algebra

solve the equations justify each step with and algebraic property 13=x/4

asked by Kim on September 1, 2016
65. ## algebra

How do I solve this equation? a/5 - 1/5 = -2 multiply both sides by 5. then add one to each side.

asked by jacque on March 3, 2007
66. ## math

Solve for the base, rounding answer to hundredths if necessary: 76 is .2% of ______.

asked by Anonymous on March 14, 2014
67. ## trigonomentry

Solve for θ from 0 to 360 degrees [sin(2θ)]²- (cosθ+sinθ)=

asked by pooo on January 2, 2017
68. ## Algebra

Solve the following inequality. (x-4/-x+2)>0 Write your answer using interval notation.

asked by Jena on February 1, 2011
69. ## maths

Solve the quadratic equation ax2+bx+c=0 using the completing the squares

asked by salz on March 22, 2016
70. ## algebra

Solve by completing the square;round to the nearest hundredth if necessary. x^2-3x=4 Thanks so much.

asked by Anneliese on January 7, 2017
71. ## Algebra

I have a question I have this systems to solve 2x-y = 1 3x-3=y How do I go about solving this? Please give me some direction

asked by Jessie on March 8, 2011
72. ## Math Help!!!

Solve the proportion. Round to the nearest hundreth, where necessary. 27/90=3/? A. 3 B. 10 C. 9 D. 27 Is the answer B?

asked by Callie on November 11, 2014
73. ## algebra

-2/5 x=6/35 could the answer be - 15/14????? solve using the multiplication principle, so lost to even figure it out

asked by so lost on January 30, 2011
74. ## mathematics

Solve the equation: 4x squared-24=16x,4x-12(12raise to the power of x)+32=0

asked by Anonymous on January 4, 2017
75. ## Math

Solve ln 5 + ln (2x) = 5. Round your answer to the nearest hundreth. options --------- A. 14.84 B. 11.17 C. 71.71 D. 0.02

asked by RedRov3R on January 29, 2016
76. ## Trig Maths

solve the equation 5sin(θ -pi/6)=8cosθ for values of 0

asked by bon on April 20, 2014
77. ## Trig Maths

solve the equation 5sin(θ -pi/6)=8cosθ for values of 0

asked by bon on April 20, 2014
78. ## algebra

use factoring and the zero-product property to solve 4a^2-11a+6=0 9r^2-30r+21=-4

asked by yasha on December 19, 2012
79. ## Math Help!!!

Solve the proportion. Round to the nearest hundreth, where necessary. 32/?=20/25 A. 37 B. 16 C. 26 D. 40 Is the answer D?

asked by Callie on November 11, 2014
80. ## Math

I have a fraction problem that I partial know how do solve: 6/ 4/5= 6/1 divided by 5/4= 30/4= 15/2, but then the answer is 7 1/2 how did they get 7 1/2. Please help!!

asked by Iyana on January 29, 2016
81. ## algebra

solve the compound inequality 3x-5>-17 and 4x+3

asked by Rose on December 14, 2006
82. ## Algebra-problem restated

Solve the following inequality. (x-4)/(-x+2)>0 Write your answer using interval notation

asked by Jena on February 1, 2011
83. ## math

Solve the quadratic equation ax2+bx+c=0 using the completing the squares

asked by salz on March 22, 2016
84. ## physics

can you help me to re-arrange this formula. i don't get it. V2^2= V1^2+2ad^2 I want to solve for a pls help

asked by ted on October 18, 2011
85. ## Differential Equations

Solve the seperable differential equation for U. du/dt = e^(5u+7t) - Using the following initial condition U(0) = 12

asked by Kody on August 27, 2011
86. ## Math Grade 11

Solve for d in this triangle |\ 1 | \ M| \ I | \ d L | \ E |___ \ | 90| x\ ------- x Is 60 Degrees The 90 Box is a right angle. THank you!

asked by Nate on November 3, 2010
87. ## Geometry-8th gr

Can you please help me solve this question? Express the ratio x^2 + 4x -12/ x^2 - 4 in simplest form. Thanks.

asked by Mona on February 1, 2013
88. ## Algebra

Solve for g: R=(gs)/(g+s) I don't usderstand how to isolate the g from the rest of the variables

asked by Anonymous on October 22, 2015
89. ## Math

5(x+2)/(x-2)^2-2(x+2)/(x-2)-3=0 Hint: use u= x+2/x-2 and solve for x Enter the solutions separated by commas

asked by Bobb on May 1, 2012
90. ## casanayan national high school

How did you solve business-related problems during the early years?

asked by reza on July 7, 2015
91. ## Algebra

Find approximations of the given value f(x)={4; 4>x {x^2 2

asked by Anonymous on February 5, 2012
92. ## business study

why i cant understand in bussiness study delphi what really about and to solve some problem?

asked by nonhlanhla on May 12, 2015
93. ## math

Solve the equation by completing the square 16x^2+1=7x!!! Please help me ASAP!!!! :(

asked by Andrea on November 16, 2018
94. ## Algebra desperate

Solve the following inequality. (x-4)/(-x+2)>0 Write your answer using interval notation

asked by Jena on February 2, 2011
95. ## math

Solve the following ordinary differential equations. I) (2y+x^2+1)dy/dx+2xy-9x^2=0 ii) d^2/dx^2+3day/DX+2y=x^2

asked by gourav on March 20, 2015
96. ## Math Help 222

x^2/x-4 - 7/x-4=0 *Please solve the rational expression. multipy both sides by (x-4) then you have x^2-7=0 x= +- sqrt 7

asked by margie on March 4, 2007
97. ## algebra

Hey, I don't undertand how to solve this equation using substitution. 3y = -1/2x + 2 y= x + 9

asked by Laura on December 21, 2012
98. ## math

Trying to solve the number 91 how 1,3,4,6 can be used once using add,sub,mult,divide and symbols

asked by Tanya on April 22, 2011
99. ## trig

Solve the equation. Express your answer in trigonometric form. x^5 - 11 = 0

asked by tony on June 28, 2013
100. ## trig

Solve for the unknown. Assume that all of the angles are acute. 1. U = 69 A = 75 AN = 56 NU = ______ is this right NU= 92.05

asked by Nate on May 20, 2008