# 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 39
1. ## Math

Solve the equation and show the check of the potential answer(s). If any answers are excluded values, state this on your answer sheet. a2 + 4a - 5/a2 + 2a - a + 3/a + 2 =1/a2 + 2a Can someone please show me how to do this problem with checks? I have

asked by Neil on May 6, 2018
2. ## Science

Why do scientists use models? a: Scientists use models to learn about things that are too small, too large, or too complex to observe directly. < b:Scientists use models because doing so is always part of the scientific method. c:Scientists use models

asked by not+really on September 28, 2017
3. ## chemistry

2. 50.0 mL of 1 M NaOH(aq) and 50.0 mL of 1 M HNO3(aq), both initially at 18.6°C, were mixed in a Styrofoam cup calorimeter. The temperature of the solution rose to 25.4°C. How much heat was released? Assume that the heat capacity and density of the

asked by owen on January 24, 2017
4. ## chemistry

2. 50.0 mL of 1 M NaOH(aq) and 50.0 mL of 1 M HNO3(aq), both initially at 18.6°C, were mixed in a Styrofoam cup calorimeter. The temperature of the solution rose to 25.4°C. How much heat was released? Assume that the heat capacity and density of the

asked by punch on January 24, 2017
5. ## Math

Use a system of equations to find the quadratic function f(x) = ax^2 + bx + c that satisfies the equations. Solve the system using matrices. f(−2) = 4, f(1) = −2, f(2) = −12 The answer i got is f(x)=-2x^2-4x+8 this is the steps of how i got

asked by anonymous on April 9, 2019
6. ## Algebra

the sum of two numbers is 18. The difference between three times the lesser number and the greater number is 10. A)define variables and formulate a system of equations from this situation B)solve your system of equations algebraically and find the greater

asked by Serafina on April 2, 2016

A crate is dragged 5.0 along a rough floor with a constant velocity by a worker applying a force of 125N to a rope at an angle of 30degrees to the horizontal. Calculate the work done by the tension in the rope, the force of friction, and the net force. I

asked by K on December 5, 2013
8. ## Beginning Chemistry

My granddaughter needs help with a worksheet. Use the factor-label method and include all work. Calculate the mass of 500.0cmx3 of the element gold.

asked by Donna on March 11, 2008
9. ## physicalcs

A block having a mass of m=15 is suspended via two cables. The angles are as follows: a=19-degree, and b=26-degrees. a) write an expression for the sum of the forces in the x direction in terms of T1, T2, m, g, angle a and b. Use the specified coordinate

asked by dalia on February 13, 2017
10. ## algebra II

Thank you for your prompt response. I have my homework I have to turn in in about 2 hours, but i am struggling to solve this question. Is there any way you can just give me the answer while I find a website that can show me step by step how to solve these

asked by esther on February 26, 2011
11. ## Science

which of the following body systems detects a stimulus and creates a response? A.Response system** B.Skeletal system C. Nervous system D.Muscular system

asked by Dangel help😁 on December 13, 2018
12. ## maths-probability

A fair tetrahedral die (with face 1,2,3 and 4)and a fair coin are tosses together Construct a table of sample space of a random experiment Use your sample space to.find the probability that (1):a tail and an odd number show up (2):a head and a square show

asked by Stephen- on April 29, 2019
13. ## MATH

Assume that the population of heights of male college students is approximately normally distributed with mean of 72.15 inches and standard deviation of 6.39 inches. A random sample of 96 heights is obtained. Show all work. (A) Find P (x > 73.25) (B) Find

asked by Jennifer on November 11, 2011
14. ## math

solve each system of equations by substitution. y=3x-9 please help explain how to solve this using substitution.

asked by eliza on May 12, 2009
15. ## Psychology

Your brain has instructed your muscles to move so an oncoming vehicle. What division of your nervous system carried the information to your muscles? Answer A. sympathetic nervous system B. somatic nervous system C. autonomic nervous system D.

asked by Anonymous on March 28, 2012
16. ## science and medicine

I don't have any idea how to solve this. Could someone show me the steps in solving this word problem? I am at a loss! Abus leaves a station at 1 pm., traveling west at a rate of 44 mi/h. One hour later a second bus leaves the same station, traveling east

asked by andy on March 21, 2007
17. ## math/algebra

Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation x^3+x^2+16x+16>0 What is the solution set? (Type your answer in interval notation.) shannon

asked by shannon on February 5, 2016
18. ## Algebra

Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation x^3+x^2+16x+16>0 What is the solution set? (Type your answer in interval notation.) qaz

asked by edward on February 4, 2016
19. ## algebra

Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation x^3+x^2+16x+16>0 What is the solution set? (Type your answer in interval notation.) Mike

asked by MIKE on February 5, 2016
20. ## algebra 2

if a system of equations has no solution then it is what?

asked by betty on December 19, 2013
21. ## Algebra2

Please me with this thanks What is the solution of the system of equations? 3x + 2y + z =7 5x + 5y + 4z =3 3x + 2y + 3z =1

asked by bowershe on December 10, 2013
22. ## Elementary Algebra

How do I figure out whether or not (-1,-2) is a solution for the system. y=3x-1 2x+y=4

asked by Wanda on August 7, 2012
23. ## Algebra2

what is the solution to the above system of equation 2x + 5y =-4 4x -5y =22

asked by bowershe on December 10, 2013
24. ## Algebra 1

what is the solution of the following system of equations? 1.) 5x + 7y =3 2x = -3y +1

asked by Lindsey on February 26, 2015
25. ## math

x+5y=3 (1) x=9-5y (2) What is the solution of the system? (-3,6/5) is this correct?

asked by jason on June 29, 2009
26. ## algebra

what is the solution of the system of equations. 2x+2y+3z=-6 3x+5y+4z=3 2x+3y+4z=-10

asked by anonymous on January 4, 2013

For the following system of equations, what is the x-value of the solution? –x + 2y = 6 6y = x + 18 A.-18 B.0 C.-6 D.3 I think its B??

asked by Deborah on November 24, 2012
28. ## Algebra 2 help!

What is the solution set to the following system? x+y=3 x^2+y^2=9 a.(0,-3)(3,0) b.(0,3)(-3,0) c.(0,3)(3,0) d.(0,-3)(-3,0)

asked by Angela on January 9, 2014
29. ## Stuck on this Algebra 2 question!

what is the solution of the system of equations? 2x+2y+3z=-6 3x+5y+4z=3 2x+3y+4z=-10

asked by Heather on January 11, 2014
30. ## Algebra 1

What is the solution of the system? use substitution . 4x+2y=10, y=-3x+6

asked by Sierra Elizabeth on January 4, 2016
31. ## algebra

what is the solution of the following system of equations? y = -2/3x y = 1 a)(1,-2/3) b)(-3/2,1) c)(-2,3) d)(1,-3)

asked by poo on April 29, 2010
32. ## Algebra 1

What is the solution of the system? use substitution . 4x+2y=10, y=-3x+6

asked by Sierra Elizabeth on January 5, 2016
33. ## Algebra

Which point is a solution of the system? Y=x-9 X+2y=3

asked by William on January 14, 2008
34. ## algebra

what is the solution of the system of equations? y=4x+1 y=5x-9

asked by chelsi on May 14, 2010
35. ## algebra

What is the solution of the system of equations? y = 3x + 7 y = x – 9

asked by Sophie on December 21, 2012
36. ## Math

For the following system of equations, what is the x-value of the solution? -x+2y=6 6y=x+18 a. -18 b. 0 c. -6*** d. 3

asked by Kaai97 on January 11, 2016
37. ## Algebra

What is the x-coordinate of the solution of the system y=1/3+8 and 2x-y=2?

asked by Sylvie on January 16, 2013
38. ## ALGEBRA 2

For what value of k does the system below not have a unique solution? -1x + 7y + 2z = 6 2x + 1y + kz = -11 3x - 6y - 2z = -25 A.5 B.0 C.-2 D.-8

asked by True on July 22, 2012
39. ## algebra

what is the solution of the following system of equations? 2y + 3x = 8 y = 1/2x a) (2,3) b) (2,1) c) (1,2) d) (3,2) thanks

asked by kid on April 29, 2010
40. ## algebra

what is the solution of the following system of equations? y = 0 x = y + 2 a) (0,2) b) (2,0) c) (1,2) d) (2,1) thank you

asked by kid on April 29, 2010
41. ## math

what is the solution of the following system of equations? y = -2/3x y = 1 a) (-2,3) b) (1,-2/3) c) (-3/2,1) d) (1,-3)

asked by molly on April 28, 2010
42. ## algebra

what is the solution of the following system of equations? 2y + 3x = 8 y = 1/2x a)(2,3) b)(1,2) c)(3,2) d)(2,1) what is the solution if the following system of equations? y = 2x + 10 3y = -4x a)(-3,4) b)(4,-3) c)(5,1) d)(1,5) Thanks you

asked by molly on April 28, 2010
43. ## Calc

What is the solution of this system? 2x + 3y = 32 11y − 2x = 52 A. x = 3/2 , y = 5 B. x = 4, y = 8 C. x = 7, y = 6 D. x = 10, y = 4 E. x = 8, y = 16/3

asked by Chris on April 18, 2013

For what value of k does the system below not have a unique solution? -1x + 7y + 2z = 6 2x + 1y + kz = -11 3x - 6y - 2z = -25 A.5 B.0 C.-2 D.-8

asked by True on July 22, 2012
45. ## Math 114

what is the solution of the system of equations of x-y=-3 and x+y=5? x-y=-3 x+y=5 y=x+3 0+y=5 x=3 0=0+y=5+0 y=x+3 y=5 y=3+3 y=6

asked by Rosa on January 20, 2017
46. ## Algebra I

For the following system of equations, what is the x value of the solution? -x + 2y =6 6y = x + 18

asked by SAM on November 23, 2017
47. ## Algebra

what is the solution to the system containing the equation ? x + y = -8 and -3x + 2y = 9

asked by anonymous on April 4, 2011
48. ## algebra

the solution to the system of equations y= 2x and y = -x + 3 is a)2,1 b)(-1,2) c)2,-1) d)(1,2)

asked by david on December 15, 2010
49. ## algebra

what is the solution if the following system of equations? y = 2x + 10 3y = -4x a)(5,1) b)(4,-3) c)(1,5) d)(-3,4)

asked by babe on April 29, 2010
50. ## algebra

What is the solution of the system? y = -3x 3x + 2y =6 I don't get this, please help.

asked by james on December 16, 2015
51. ## Algebra 2

What is the solution set to the following system? x + y = 5 and x^2 + y^2 = 25 A) (0,-5) (-5,0) B) (0,5) (-5,0) C) (0,-5) (5,0) D) (0,5) (5,0)

asked by Rebecca on June 5, 2016
52. ## Algebra

Essay: Show all work. A school designer wants to create a white board with the ptimal dimensions to enhance if one side of the white board x^-5xy+8y inches. Write an algebra expression for the area of the area of the area of such a white board, simplify

asked by Anna&Karen on July 27, 2012
53. ## mat 117/algebra

Find the GCF of each product. Please show the steps so I can work the problem by myself. it is 6y squared - 3y (6y^2-3y)(y+7) 3y(2y-1)(y+7) 3y will be the greatest common factor, as each term when you multiply it out will have a 3y. In case you want to

asked by Diana on June 24, 2007
54. ## math

okay i know i have not been showing my work and ya tellin me to use steve post as an example but i don't even kno what im doin to show ya any work and i don't understand this stuff this is my first time learnin it so can yahelp me wit one. to whomever this

asked by Tameka on August 19, 2015
55. ## Calc I

I need to find the equations of the tangent and normal line for x^2-y^2=16, at the point (-5,3). I have to show every detail for my work...then use graphing software to enter my equations, so can anyone help me showing all the details of the work so that I

asked by Kejo, Help!!!! on June 28, 2011
56. ## Mathematical Methods

Following completion of your readings, complete exercises 35 and 37 in the “Real World Applications” section on page 230 of Mathematics in Our World. For each exercise, specify whether it involves an arithmetic sequence or a geometric sequence and use

asked by John on March 22, 2011
57. ## Java programming

can you show me where is the wrong for this program..because it contains error..i don't know where is it wrong..help..tq.:) import java.util.Scanner; public class BMR { public static void main(String[] args, int x) { Scanner keyboard = new

asked by yaya on March 13, 2013
58. ## Math

1.How many solutions does the system of equations have? y=6x+2 y=6x+4 a. one b. two c. infinite d. none 2. How many solutions does the system of equations have? y=1/2x-3 x-2y=6 a. one b. two c. infinitely many d. none 3. How many solutions does the system

asked by Weirdo on May 2, 2017
59. ## Physics

Prove that if an object is at a distance of twice the focal length from a lens the image is the same size as the object. Show this using an algabraic method.

asked by Anonymous on May 3, 2015
60. ## math

Consider the area between the curve y=x^2 and the x-axis over the interval 0

asked by too on May 21, 2007
61. ## math

1. Gina wrote this system of linear equations: 2x + y = 7 4x + 5y = 11 Which of the following shows the first four steps that Gina could have used to correctly solve this system for x? a) y = 7 – 2x 4x + 5(7 – 2x) = 11 4x + 25 – 10x = 11 25 – 6x =

asked by kelsey on May 23, 2014
62. ## algebra

Gina wrote this system of linear equations: 2x + y = 7 4x + 5y = 11 Which of the following shows the first four steps that Gina could have used to correctly solve this system for x? a.) y = 7 – 2x 4x + 5(7 – 2x) = 11 4x + 25 – 10x = 11 25 – 6x = 11

asked by emily on May 20, 2014
63. ## Math

1. Is the equation true, false, or open? 4y 8 = 6y + 3 2. Which value is a solution of the equation 2 - 8x = -6? 3. Which ordered pair is a solution of the equation y - x - 4? 4. Which ordered pair is a solution of the equation y = 4x? 5. Which ordered

asked by Robin Kwan on November 29, 2016
64. ## algebra

An exam consists of two parts, Section X and Section Y. There can be a maximum of 95 questions. There must be at least 20 more questions in Section Y than in Section X. Write a system of inequalities to model the number of questions in each of the two

asked by helen on January 11, 2014
65. ## math

An exam consists of two parts, Section X and Section Y. There can be a maximum of 80 questions. There must be at least 20 more questions in Section Y than in Section X. Write a system of inequalities to model the number of questions in each of the two

asked by john on April 28, 2012
66. ## Algebra 1

An exam consists of two parts, Section X and Section Y. There can be a maximum of 80 questions. There must be at least 20 more questions in Section Y than in Section X. Write a system of inequalities to model the number of questions in each of the two

asked by Kailey on May 6, 2012
67. ## Health 😘

Which is the correct order of the organization of the human body? A.)Cell--->tissue—>organ--->organ system----->organism B.)Cell---->organ---->system organ--->tissue->organism C.)Tissue--->organ---->cell---->organ system---->organism D.)Organ--->organ

asked by Sliverstream on February 18, 2019
68. ## prob and stats

11. Assume that the population of heights of male college students is approximately normally distributed with mean m of 72.15 inches and standard deviation s of 6.39 inches. A random sample of 96 heights is obtained. Show all work. (A) Find (B) Find the

asked by Anonymous on October 24, 2012
69. ## stat

Assume that the population of heights of female college students is approximately normally distributed with mean m of 67.26 inches and standard deviation s of 5.96 inches. A random sample of 78 heights is obtained. Show all work. (A) Find (B) Find the mean

asked by tina on December 10, 2011
70. ## math

can someone show me how to figure these literal equation out? I did them before but my teacher said they were incorrect. Questions~~ Solve the following formula for the variable indicated 9. r = d/t, where r = rate, d = distance, and t = time for d ( I

asked by Abby on September 28, 2015
71. ## Maths help

Hi MY question is if a cylinder has a volume of 72cm cubed and a cross-sectional area of 18cm squared. Work out the height of the cylinder Can someone show me how we do it by the steps The cross-section of a cylinder is a circle. so pi(r)^2=18 solve for r

asked by Ali on April 23, 2007
72. ## Calculus

Use Euler's method with step size 0.2 to estimate y(1), where y(x) is the solution of the initial-value problem given below. (Round your answer to four decimal places.) y' = 1 − xy y(0) = 0 I don't even know how to start!

asked by Kaitlyn on March 15, 2016
73. ## Chemistry

Assume that it is necessary to determine the [Fe3+] in a solution that may be in the .0001 to .0005 M range. Outline a spectrophotometric method that would accurately give the required data?

asked by Kirsten on March 10, 2011
74. ## Math

Jesse played two days of golf. On the second day, he got a score of 6 below par, or -6. His total for the two days was 0 above par, or 0. Define a variable. Then write and solve an equation to find the score Jesse got on the first day. Show your work.

asked by Anonymous on November 12, 2015
75. ## chemistry

What will be the final pH value if you mix 50ml HCl (aqueous solution, pH=0.5) and 40ml NaOH (aqueous solution, pH=12). Hint: convert pH value to concentration of acids/base, then consider the neutralization reaction, then find out the resulting pH value.

asked by Anonymous on April 4, 2013
76. ## Chemistry

For the reaction H2(g) + I2(g) 2HI(g), Kc=54.9 at 699K. A system was charged with 2.50 moles of H2 ans 2.50 moles of I2 and 5.00 moles of HI initially in a 5.00 liter vessell. How many moles of H2 should there be present at equilibrium? (Answer my teacher

asked by Anonymous on January 6, 2018
77. ## algebra

Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer if no solution then type NS in both parts and if the the answer is infinite solutions then type I in

asked by samay on January 22, 2018
78. ## Math

Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer if no solution then type NS in both parts and if the the answer is infinite solutions then type I in

asked by Bill on January 24, 2018
79. ## math

Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer if no solution then type NS in both parts and if the the answer is infinite solutions then type I in

asked by Anonymous on January 23, 2018
80. ## Chemistry

What is the maximum mass of cobalt (II) phosphate that will precipitate from a solution prepared by adding an excess of K3PO4 solution to 100.0 mL of 5.0 M CoCI2? Sorry for all the confusion with different names we are working in a group and its easier to

asked by Marissa on November 16, 2016
81. ## Math

Consider the equation below. 1/5(x+2)+2x = 6x-10 Part A: Which property can be used to simplify the expression 1/5(x+2)? Answer _______________ Part B: Move all x-terms to one side of the equation and simplify. Show your work. Answer _______________ Part

asked by Jayson Angole on March 31, 2013
82. ## ks maths

2x - 4y = 12 3x + 2y = 10 whats the answer Do you know how to solve simultaneous equations? Multiply equation (2) by 2, then add eqution 1 to eqution 2. That process gets rid of the y term. Then solve for x. Substitute the value of x into either equation

asked by Me on July 15, 2006

solve this system of equations 2x-3y=7 3x+y=16

asked by jesusa martinez on March 5, 2009
84. ## math

4. Solve the system of equations x + y = 6 x - y = -9

asked by p on November 13, 2011
85. ## math

use substitution to solve system -2x+y= -9 =5x+4y= -30

asked by at a lost on March 8, 2013
86. ## math-algebra

15. Solve the following system of equations. x + y – z = -1 x + y + z = 3 3x – 2y – z = -4: A. (-1, 3, 3) B. (0, 1, 2) C. (1, 0, 2) D. (3, -1, 2)

asked by Anonymous on September 26, 2007
87. ## math

solve the following system of equation 8x+9y=-19 -3x+7y=-24

88. ## algebra

solve each system by graphing y=1 y=-5 over 2x+4

asked by eric on February 20, 2013
89. ## math

how can you solve a system by graphing?

asked by Angie on April 2, 2009
90. ## Precalculus

asked by Phoebe on March 5, 2013
91. ## Math

Solve each system x + 3y = 6 4x - 5y = 7 I need to know what x and y equal??

asked by Melanie on February 23, 2011
92. ## College Algebra

Solve the System 2x-8y=20 3x-12y=30

asked by Haley on November 20, 2013
93. ## Algebra

Solve the system by substitution. x + 3y = -4 2x + 2y = -8

asked by Kay on January 26, 2014
94. ## algebra

{-3x - y= -10 { 4x - 4y = 8 Solve the system by graphing

asked by Finally Finishes on September 11, 2013
95. ## math

Solve the system of equations x + 3y = 32 -3x + 2y = 3

asked by p on November 13, 2011
96. ## math

Solve this system 8x-4y=16 , y=2x-4 by substitution

asked by taliyah on January 22, 2008
97. ## math

solve the following system of equations 8x+9y= -19 -3x+7y= -24 x= y=

asked by mace on March 7, 2013
98. ## math

use the substitution to solve the system -5x+24=27 y=2x+11 x= y=

asked by hello on March 7, 2013
99. ## math

use substitution to solve the system -5x+2y=27 y=2x+11 x= y=

asked by hello repost on March 7, 2013
100. ## algebra

Solve the following system of equations x+4y=3(1) x=6-4y (2)

asked by Terri on January 28, 2010