# 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 467
1. ## math

if my example is a y=kx one and y=-5 and x=10 which are directly proportional why can't I just isolate the "k" (constant) and solve as a regular algebraic equation?

asked by Nicole on January 28, 2012
2. ## MATH PLEASE HELP

x = 2 , 4 , 6 , 8 y = 18, 34, 50, 66 This is supposed to be a table where the x lines up with the y in order How would I find the equation to solve this when x = 20? x goes up by +2 y goes up by +16 but starts with 18

asked by Amy on October 11, 2010
3. ## calculus

Having a really hard time with this! e^8x^2-5 = 14 solve the exponential equation express in exact form. Someone please help!

asked by amy on October 2, 2011
4. ## Percent algebra help?

1.44 Tax on an item priced at 24.00? How would I solve this? I need to find the percent? Would I just divide 1.44/24.00? Thanks Allyson

asked by Allyson on October 25, 2010
5. ## Chemistry

Zinc - .5 grams HCl- .2 moles Find the Mass of ZnCl2 [How would you solve this?]

asked by Derrick on November 19, 2015
6. ## Chemistry

Solve for the missing compound in the balanced equation: 3PbO + X ----> 3Pb + N2 + 3H2O please help .

asked by Jazmine on February 17, 2011
7. ## algebra

Solve the equation or formula for the indicated variable s=3r4t+or t answers are. t=s/3-r. t=r4-3s t=s/3r4. T=811/s

asked by Molly on February 21, 2014
8. ## algebra

TRASLATE THE FOLLOWING SENTENCE INTO AN EQUATION. dO NOT SOLVE TEN MORE THAN THREE TIMES A NUMBER IS 130.

asked by Angela on November 7, 2011
9. ## advanced math

abd+ntv/783bkm=x+B+C/DFG2*gh/32bkm solve for B could someone explane to he how to do this? i am so very confused.

asked by Taylor on December 3, 2010
10. ## precalculus

Solve the logarithmic equation. Express your solutions in exact form only. 18e^-x -e^x=7

asked by tina on November 11, 2011
11. ## math

How to solve in my head without using paper for uil number sense How about an addition problem for example 33 + 23.

asked by Mattie on September 27, 2008
12. ## math

how can I solve in my head which digit represents the hundreds place in 3250.136

asked by Mattie on September 27, 2008
13. ## Algebra

last one of my problems :-) solve: square root of x-1=x-3 This is an impossibility. there must remain any mistake within the problem

asked by Daniela on October 29, 2006
14. ## algebra

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

asked by Rose on December 14, 2006
15. ## Please Help!!!!!!

Solve the Trigonometric equation for all solutions between [0,360)degrees. Sinx + 1 = 2.6635 Please, Please, Please Help Me!!!!!!!!!!

asked by Misty on November 7, 2011
16. ## Algebra 2

How do you solve this exponential equation using logarithms? 2*5^x=85 Do you start like this? xlog2*5=log85 I don't know what to do after that.

asked by Jane on December 18, 2013
17. ## math

Use the Law of Sines to solve the triangle. (Round your answers to two decimal places.) A = 76°, a = 38, b = 29 B = C = c =

asked by Stacy on June 10, 2018
18. ## Geometry

/Users/szeringue/Desktop/SCAN0001.JPG Can you help me solve this problem, Please AB=27 BC=x CD=4/3x AD=x AC=? How do I get what AC equals?

asked by Jake on December 2, 2010
19. ## ALGEBRA 2 PLEASE HELP

How do I solve this quadratic function by finding square roots 2x²=200 ?

asked by Kesha on February 11, 2008
20. ## Algebra 2

How do I solve this quadratic function by finding square roots 2x²=200 ?

asked by Kesha on February 11, 2008
21. ## Geometry

/Users/szeringue/Desktop/SCAN0001.JPG Can you help me solve this problem, Please AB=27 BC=x CD=4/3x AD=x AC=? How do I get what AC equals?

asked by Jake on December 2, 2010
22. ## Math 222

Please help me solve these two problems. My addition sign is not working on my keyboard. a^4b plus a^2b^3 18z plus 45plus z^2

asked by Monica on October 21, 2014
23. ## Analytic Geometry

What are the equations of the circles tangent to the x-axis, of radius 4 and whose center is at (-2,y) Please help, how do I solve this problem?

asked by Lance on January 21, 2013
24. ## algebra

Write each equation in standard form (set equal to zero). Then solve by factoring. Example: x²-2x=8

asked by Autumn on May 15, 2008
25. ## science

do you agree with the find and develop more domestic supplies of oil to solve the U.S. problems?

asked by mayday 1 on May 25, 2008
26. ## Math

And which situation what do you need a percent less someone to solve a problem? 7th Grade Pre Algebra

asked by Cheyenne on September 27, 2016
27. ## Math

8. Solve each of the following trigonometric equations and find all solutions in the interval: 0

asked by !! on February 23, 2019
28. ## Socials Studies (Help please)

in what ways did politicians expect confederation to solve economic problems in the colonies?

asked by Samantha on July 13, 2016
29. ## arithmetic

A special set of rules, called the ------------blank, can be used to solve expressions with more than one operation.

asked by jasmine on October 30, 2008
30. ## Trigonometry

Solve the equation sin^2x-cos^2x=0 over the interval [0, 2pi). Having trouble getting started.

asked by Mark on April 1, 2012
31. ## Math

Need help on these questions! Find the slope of each line. 1. Y=x+1 Solve the equations. 2. -6+x/2=2 Simplify each expression. 3. -4(5n-5)+6(1-7n)

asked by Anonymous on December 17, 2013
32. ## Economics

Solve the equation algebraically and estimate the market equilibrium price and quantity. 2y+3x=10 X-4y=-6

asked by Skp on September 26, 2018
33. ## algebra

Solve by factoring: x^2 + 5x = −6 Please help! I have a test next week and this is one of the practice problems and I do not understand this. I will not graduate unless I get a C. Please, Please!! Thank you

asked by slomo on January 30, 2015
34. ## Algebra 2

What are the solutions of the quadratic equation? 2x^2 – 16x + 32 = 0 How do I solve this, I'm kinda new to quadratics and there confusing >.>

asked by Bailee Morris on November 22, 2013
35. ## math calculus

Hi could someone please explain to me how i would use the chain rule dy/dx = dy/du(du/dx) to solve for y= sin(x+y) - im looking for dy/dx i don't understand the steps thanks

asked by sarah on March 21, 2009
36. ## math

solve this equation a divided into 7=20 the actual problem has the divide sign. I got a=20*7 so a=140

asked by Sara on October 15, 2014
37. ## 6th grade Math

Solve. 12 ÷ 4( 9 ÷ 3) x 9 =12/ 4(3) x 9 = 12/12 (9) = 1 The answer sheet had 81. Is this correct? 12 ÷ 4( 9 ÷ 3) x 9 = 12/ 4(3) x 9 = 3(3) x 9 = 81? 2. 8 + 8 (18 ÷ 3) = 8 + 8(6) = 8 + 48 = 56 Isn't this similar to the 1st problem?

asked by Jared on October 22, 2018
38. ## Algebra (urgent!)

Find an equivalent inequality with absolute value #1: -5 < y < 5 #2: x < -4 or 4 < x I'm not sure at all how to solve this problem. Please walk me through the process. Thanks!

asked by Katie on February 3, 2009
39. ## math

Write equation and solve. Hell eleven less than five times a number is19

asked by Micaela on October 16, 2012
40. ## math

solve and express the answer as an improper fraction in lowest terms 5/6-2/3(6-1/2)+3/4 I did 5/6-4+1/3+3/4 -31/6+1/3+3/4 -19/6+1/3+3/4 -38/12+4/12+9/12 -34/12+9/12 -25/12 is this correct? thanks

asked by b6 on January 20, 2013
41. ## Calculus

Solve the integral: ∫ x^2+6x-3/(x+3)(x^2+2x+9) I'm stuck. IDK if my setup is correct either. ∫A/(x+3) + ∫Bx+C/(x^2+2x+9) F(x) = A ln(x+3) + ∫Bx+C/(x^2+2x+9) X^2+6x-3=A(x^2+2x+9) + Bx+C(x+3) X^2+6x-3=Ax^2+2Ax+9A+Bx^2+3Bx+Cx+3C

asked by Mike on October 11, 2018
42. ## Algebra

The quotient of a number and four increased by two is twenty-four. Need to create and solve the following two-step equations

asked by Jarrod on September 27, 2016
43. ## Pre-Calc

Solve the multiple angle equation in the interval (0, 2ð) tan2x=-1 Do i have to divide the 2 to the other side?

asked by Janique on January 17, 2012
44. ## Calculus

Solve the following initial valued problems: a) g′(x) = sin(x), g(π) = 2. b) g′′(x) = 18x, g′(0) = 1 and g(0) = 5. b) g′′(x)=12x2 +2,g′(1)=7andg(1)=3.

asked by cool on April 5, 2017
45. ## THIS IS AN EASY QUESTION!!!

(too bad I don't know how to solve it!) How many different ways can the letters in the word “square” be arranged?

asked by Vince on June 7, 2011
46. ## Calc

How do you solve ∫sin(3x+4)dx? I got the -cos(3x+4) part, but do you have to integrate the 3x+4 too? Does chain rule apply?

asked by Erica on January 2, 2011
47. ## Geometry Please Help

/Users/szeringue/Desktop/SCAN0001.JPG Can you help me solve this problem, Please AB=27 BC=x CD=4/3x AD=x AC=? How do I get what AC equals?

asked by Jake on December 2, 2010
48. ## math

P: Solve each to four decimal places (x real and 0 in degrees) 5 cos x - 2 = 0, 0

asked by john on November 20, 2012
49. ## 4th grade

a special set of rules, called the...blank..., can be used to solve expressions with more than one operation

asked by jasmine on October 30, 2008
50. ## Math 222

Please help me solve these two problems. My addition sign is not working on my keyboard. a^4b plus a^2b^3 18z plus 45plus z^2

asked by Monica on October 21, 2014
51. ## Pre Calculus

sec x = -2 , π ≤ x ≤ 3π Use a calculator to solve for x in the given interval 9)sinθ=0.1473, 0°≤θ≤90° A) -8.47° B) 8.38° C) 98.47° D) 8.47° 10) cosθ=0.7563,0°≤θ≤90° A) 37.10° B) 49.14° C) -49.14° D) 40.86°

asked by Able on March 24, 2011
52. ## College Math II

a^4 - ab^3 = I have asked this question on many web sites and still cannot find the steps on how to solve this problem. Can you please help.

asked by Lori on November 21, 2009
53. ## maths (2nd time)

Solve the equation. Round to the nearest hundredth: 1. 1.59x+4.23=3.56x+2.12 2. -3(1.25-2.48x)=8.15+5.86

asked by grace on September 20, 2009
54. ## Calculus

Even after looking up how to do this and reading about it I still don't know how to find the slope of curve or the deritives . Please help solve these problems. 1. Y =x^3 p(-1, -1) 2. Y = x^4 /2 p(-1 , 1/2) 3. Y= 8x^4 -7x^2 +5x + 6 p(-1,2)

asked by Stephanie on September 23, 2016
55. ## Math

How are addition and multiplication used to solve a linear equation? Demonstrate by solving " 15x+7=31+3x

asked by Johnny on June 19, 2014
56. ## Calculus (Sequences)

Hello, here is a picture of the question I am trying to solve, I believe the answer to be C, but I would just like some confirmation/correction. goo. gl/gWfhVn

asked by Tim on January 17, 2017
57. ## science

do disagree with the increase dependence on nuclear power to solve U.S. energy problems?

asked by mayday 1 on May 25, 2008
58. ## algebra

Please Help me solve this problem... Give exact and approximate solutions to three decimals places. x^2 + 3x - 7 = 0 Thanks!!!

asked by Meia on September 21, 2008
59. ## Math

Write and solve a real- world problem that can be solved using the expression 3/4 divided by 1/6?

asked by Mitch N on September 22, 2016
60. ## quadratic equations

can you solve the equation using the quadratic formula x2 + 3x = 7? Explain and provide an exact answer.

asked by becca on January 17, 2012
61. ## Math Help

Hi! I need help with this question. Thanks! Directions: To solve these problems, you need to find the inverses of these 2x2 matrices. a.) D= [-3 -6 6 12] b.) C= [2 1 7 3]

asked by Katy on March 30, 2015
62. ## maths:

Solve the equation. Round to the nearest hundredth: 1. 1.59x+4.23=3.56x+2.12 2. -3(1.25-2.48x)=8.15+5.86

asked by grace on September 20, 2009
63. ## Math

L1: (-2,-1), (1,5) L2: (3,5), (5,9) These lines are parallel because they have the same slope but different y-intercepts.(Is this true and if it is how do you solve the problem and graph it)

asked by Khylisha on February 9, 2011
64. ## geometry

how would you solve this math problem: Given AC with endpoint a (16,-6) and midpoint M (3, 7). What are the coordinates of end point C?

asked by KIM on October 8, 2009
65. ## Math

Solve for x under the assumption that x>0. Enter your answer in interval notion using grouping symbols. X-48/x

asked by Daniel on May 23, 2017
66. ## calculus

use a sign chart to solve inequality. Express answers in interval notation. x^2+6

asked by joker on December 12, 2013
67. ## mechanic

Resolve a force of 100 n in to two compound of 200 n each drow sketch .solve this

asked by Anonymous on September 12, 2016
68. ## geometry

What are the equations of the lines through (-5, -3) and passing at distance 2sqrt5 from (5,7)? This problem is confusing? How do I solve this? Please I need your Help

asked by Lance on January 7, 2013
69. ## Chemistry

Solve with half equation reaction SO3 2- + MnO4 -=SO4 2- + Mn2+

asked by Kabih kush on November 5, 2015
70. ## math

4. Aristotle used deductive logic, in particular, syllogism. Solve for G to find in which century B.C. he was born. A = D B = 4 E = 3 D = E and G = A + 1

asked by Jas on March 18, 2008
71. ## 8th grade

In chemistry what is the practical applicaiton of scientific principles to solve everyday problems?

asked by Aaron on November 17, 2008
72. ## math

solve the equation by expressing each side as a power of the same base and then equating exponents 2^(7-3x)=1/4

asked by john on March 3, 2009
73. ## math

Is 2y=2y all the way simplified? This isn't a question on a test by the way. I just need to figure this out to solve an equation I created.

asked by Anonymous on January 23, 2019
74. ## algebra

solve the equation by expressing each side as a power of the same base and then equating exponents. 2^(7-3x)= 1/4

asked by john on March 3, 2009
75. ## Chemistry

How many moles of ion are in the following? A. 0.0200 g AgNO3 - Could someone give me the step to solve such problems? Thanks

asked by Shadow on January 29, 2013
76. ## College algebra

Solve equation by expressing each side as a power of the same base & then equating exponents. e^x+5=1/e^6

asked by Erica on April 23, 2013
77. ## Algebra 1

Can someone help me solve for, the square root of 100 over 49? PLZ don't give the answer.

asked by Algebra 1 on August 10, 2017
78. ## Chemistry

The density of a liquid is 3.22 g/mL. How many milliliters are there in 2.62 kg? If you answer this could you give me an explanation of how to solve it in the future

asked by Danielle on June 17, 2012
79. ## Trig

Solve the equation on the interval 0 less than or equal 0 < 2pi. 1. sec 30/2 = -2 2. cos(20 - pi/2) = -1 3. tan(0/2 + pi/3) = 1

asked by KC on September 25, 2007
80. ## Algebra

How do I solve: One leg of a right triangle is 4 m longer than the other. If the length of the hypotenuse is 18 m, how long are the other two legs?

asked by Allen on April 29, 2014
81. ## algebra

solve the equation if it an identity (all real numbers) or a contradiction please state 5x+6+6x=10x+6+y

asked by babygirl on September 6, 2011
82. ## Maths

Given the f (x) =2x^3 + ax^2 + bx - 9. (a)Find the value of a and b if f (x) has a factor x -3 but leaves a reminder of 8 when divided by x + 1. (b) Factorize f (x) completely and hence solve for x.

asked by Shane on June 17, 2013
83. ## 12th grade maths

factorise: 2x^2+6x-16, and 14x^2-3x-2. Solve: 6y^2-5y-6=0, and 8x^2-2x-1=0. Rearrange: p=5t-u/u to make u the subject, and p(q+r)=(q-p). please help i've done about 40 questions and im just stuck on these. thanks for the help

asked by adam on September 6, 2010
84. ## algebra

Is this statement true or false? It is possible to solve a variation problem without a constant of proportionality.

asked by Candice Watt on March 17, 2011
85. ## Math

You have tow ropes one 14inches the other 23 inches if you if you need three feet of rope what do you do use RDW to solve

asked by Courtney on April 10, 2016
86. ## Human & Social Biology

describe how social biologists may help to solve the problems of housing lacking sanitation

asked by Shonnie on April 19, 2011
87. ## Maths

How would you solve this in order to find t? 0.2t(t-5.1)(t-9.1)=2.4+0.75t I tried differentiating it, but I wasn't getting the answer I was supposed to

asked by alicia on October 9, 2015
88. ## math

Factorise completly 18rc-3rd-6r+rd 2.Solve the pair of simultaneous equations.? 2y=3x-13 5x-2y=23

asked by charlene on April 13, 2015
89. ## Geometry

m

asked by Sam on April 22, 2010
90. ## physics

Consider the equation -mv0 +3mv0 = 4mvf. Where m and v0 are constants, Solve for vf. Simplify answer.

asked by Joseph on June 8, 2012
91. ## Chemistry

How many grams are there in 2.3 x 10^24 atoms of silver? I need to use dimensional analysis, and I'm not sure of the conversions I'd need to solve this problem. Thank you!

asked by Johnny on October 7, 2007
92. ## Algebra

It's been a while since I've had to do this so I don't remember. I have the equation 6x + 19 = x. They want me to solve for x. I'm guessing I have to move over 19 to make it the sum, but how do I do that?

asked by Adam on September 10, 2018
93. ## Maths

what is the value of the range of the function f(x)=x^2+2 for the domain value 1/4? How do I solve? Please don't just straight up give me the answer >.< I want to know how to do this.

asked by Lyana on October 30, 2015
94. ## math

Evaluate the following expressions for x=-3 13)–2x^2 = 14)(-2x)^2 = 10)Use the discriminant to determine the number of solutions of 3x^2-4x+6=0 8)Solve sqrt[3b] = -3

asked by ALISSA on May 22, 2012
95. ## Chemistry

45.0 ml of 9.0x10 the negative 2m hno3 I am needing the steps to help solve the above chem equation

asked by Help on April 20, 2010
96. ## Geometry

m

asked by Sam on April 22, 2010
97. ## Calculus

I am trying to solve the following L'hopital's limits question below: lim x -> 0 from the positive direction of ( 5^(sin(x)) - 1 )/ (x)

asked by David on December 8, 2014
98. ## Algebra

I'm trying to solve this Pythagorean Theorom problem. x^2+(2x^2)=32^2 which becomes 5x^2=1024 I don't get how the x^2 and the 2x^2 combine to get 5x^2. I think it should be 3x^2. Can you explain? Thanks!

asked by Peter on October 5, 2009
99. ## Chemistry

I'm completely confused on how to solve this problem. Convert 125 hp-hr/long ton to kW-s/kg.

asked by Angel on September 12, 2010
100. ## Math

No clue how to solve this. If you have performed a linear regression of data that ranges from 1-10 and has a y=2x+5, what is the extrapolated value for y at 11

asked by mysterychicken on June 20, 2013