# 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 416
1. ## precalulas

solve each equation over the given interval 2x=cosx for all values of x

asked by sylvia on November 27, 2011
2. ## math

55+7*79+9=100 plz solve diffrrent types

asked by Narendra on January 13, 2016
3. ## trig

solve sin x-1=0 for 0degress

asked by ana on October 15, 2009
4. ## Math

I can't figure out how to solve this math problem, please help. 1.4 divided by 36.96

asked by Anonymous on January 26, 2015
5. ## 6th grade

how do you solve a problem when you have one whole # with a whole # and fraction. this is subtracting ex: 16 -10 2/7 ________________

asked by Sophie on October 29, 2010
6. ## Algebra

we need help and the steps to solve 5x-y=18 and 5x+6y=-38. we need the ordered pairs if any. So far we came up with (6,-9). Thanks Team A

asked by Team A on September 13, 2010
7. ## math

Q=3x^2+4y^2 if x+y=7 what is minimum value for Q. I have absolutely no idea how to solve this problem.

asked by summer on February 12, 2012
8. ## math

-5x-2.34=5.9 i got x=-1.648 is that correct what is -13=10-x/2 i don't understand how do you solve this?

asked by Anonymous on March 4, 2013
9. ## Geometry

If the angles of a triangle have the ratio 3:4:5 and you want to know what they are would you go 3x + 4x + 5x = 180 and solve for x?

asked by Debbie on November 30, 2010
10. ## geometry

how would you solve for x in a 45-45-90 triangle if the hypotenuse is 9 square root 2

asked by bethy on August 1, 2011
11. ## Math

How do you solve this equation: 3x-5*√x=2. (√= Is a square root sign)

asked by Anonymous on August 29, 2011
12. ## calculus

Four out of five days were used to create a problem, how many day will it take to solve it?

asked by Crown on February 1, 2014
13. ## Algebra 1

What are two symbolic techniques used to solve linear equations?

asked by Theresa on August 30, 2012
14. ## trig

how do i solve this completing the square problem: 3x^2+12x+10=0

asked by Anonymous on April 26, 2011
15. ## Math

Solve for all possible values of x where O°≤x≤360°. tan x = -1/√3 cos x = 1/2

asked by Kate on July 17, 2011
16. ## Chemistry

Can you please help me solve r1/r2 = sqrt(M2/M1)for M1. My answer: M1=M2r2^2/r1^2 Is this correct?

asked by Maddy on January 28, 2015
17. ## College Algebra

Solve 1/3logP-2logt +2/3logr by condensing it to one

asked by Anonymous on November 27, 2010
18. ## algebra

solve by square root property (8x-3)squared=5

asked by david on July 10, 2010
19. ## math

-5x-2.34=5.9 i got x=-1.648 is that correct what is -13=10-x/2 i don't understand how do you solve this?

asked by Anonymous on March 4, 2013
20. ## maths

solve the equation x³ − 7x² + 36 = 0 , given that one root is double the other

asked by tabassum on January 22, 2016
21. ## math

Can't remember the way to solve for the variable. 5x + 6 = 7x. Answer is 3, but how to do other problems?

asked by Hannah on November 11, 2012
22. ## Math

log2(-3sinx)=2log2(cosx)+1 solve for x

asked by Sarah on January 12, 2016
23. ## 4th grade

What property of multiplication helped solve 1X47=47?

asked by Anonymous on October 28, 2010
24. ## ^th grade math,

using mental math and distributive property solve: 25(12)

asked by Ann on November 15, 2012
25. ## algebra

Solve each equation. Watch for extraneous solutions 5/y-3 = y+7/2y-6 +1

asked by Joe on July 13, 2009
26. ## Math - Algebra

[ (x-3)(x+1) / (3x+11) ] = 0 How would I solve this equation? I don't know how to isolate for x. Answer: 7

asked by Anonymous on December 12, 2007
27. ## math

solve for v round your answer to the nearest tenth 13/7= v/8

asked by mace on March 4, 2013
28. ## Adding and Subtracting Rational Expressions

I would highly appreciate it if someone could solve these forme.I think I typed them out correctly. (n-2/n+4)+(8/[n+4]) (5m+8/[m-1]) - (m-3/[m-1]) (x^2/[x-1]) - (1/[x-1]) (4x+y/[2x+3y])-(2x -2y/[2x+3y]) (x^2+3x+2/[x^2-16] + (3x++6/[x^2-16]) 7/(x-5) -

asked by mike on May 21, 2007
29. ## Trigonometry

solve 2tanx cos2x+1=tan3x+2cos2x

asked by Season on January 12, 2016
30. ## Chemistry

Solve for A and B 0.433= (45.6*A) + (3.152*B) 0.3363= (11.92*A) + (37.675*B)

asked by Jess on May 2, 2013
31. ## precal 2

use law of sines to solve the triangle A=58 degree, a=4.5, b=12.8

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

factoring to solve quadratic equation 5x^2=16x+45

asked by lori on April 26, 2011
33. ## Pre-Calculus

How do you solve the equation(800+x)tan33=xtan35?

asked by Angie on December 29, 2014
34. ## Math

I have to solve this equation by extracting square roots. (x-7)^2=(x+3)^2

asked by Brittany on December 3, 2007
35. ## Math, Algebra

81^3(x+1)=9^2(x-1) Solve this equation by expressing both sides as powers of 3.

asked by Anonymous on May 12, 2016
36. ## trig

solve 2cos^2x-sinx=1, 0 < or equal to x < 2pie

asked by Calvin on May 17, 2012
37. ## mathematics

how to solve exponatins equations by trial and error

asked by nolusindiso on March 3, 2013
38. ## Math

express 53 as the sum of 4 or less perfect squares please help me solve, thanks!

asked by Packy on April 20, 2010
39. ## Math

Anyone help me?? :) How to solve: 5x2 = -(19/2x-1) and 2x2 + 45/2x - 18 = 0 With full solutions? Thank you :)

asked by Karen on July 25, 2011
40. ## Math

Hello, need help to solve this problem 9ex89=? hurry please thankyou!

asked by Street fighter on April 12, 2019
41. ## Math

Assume that y varies directly with x, then solve. If y=-18 when x=6,find x when y=6

asked by Chey on May 12, 2016
42. ## Math

How do I solve 2sin4x cosx = 0 in the interval [0, 2pi)?

asked by Anonymous on October 30, 2015
43. ## math

Solve the equation for x 30x+10x-40=16x+8

asked by diego on September 4, 2012
44. ## algebra

Solve equation using quadratic formula x^2+4x+3=0 is answer 3,1 ?

asked by Melissa on July 20, 2009
45. ## Algebra

how can you solve average rate of change in f(x)=4x^2+9 in following points? A) (c,g) (r,u) B) 2x+h

asked by Sam S. on January 15, 2016
46. ## math

5/(w-3) Solve for w. w= I don't understand. Please help. Did I copy this incorrectly or something?

asked by Nik on September 26, 2013
47. ## CALC

Solve the Equation: 1. 2^x + 2^-x = 5 2. Log2x + log2(4 – x) = 0 thanks. i'm not sure how to approach this at all.

asked by Jess on July 22, 2009
48. ## Math, Algebra

81^3(x+1)=9^2(x-1) Solve this equation by expressing both sides as powers of 3.

asked by Anonymous on May 12, 2016
49. ## Math, Algebra

81^3(x+1) = 9^2(x-1) Solve this equation by expressing both sides as powers of 9.

asked by Anonymous on May 12, 2016
50. ## trig

How would i solve this equation in Radians: cosx + sinx = 0

asked by Kylie on December 19, 2010
51. ## Algebra2

How do I solve this rational exponent equation? (2x)^1/2 = x - 4 Thanks in advance ^^

asked by Lily on March 13, 2012
52. ## Math

Write the inequality and solve: The product of a number and 7 is less than 28

asked by Ann on April 27, 2014
53. ## Math

How you solve this in inequality form? Six less than or equal to the sum of 4 and -2x.

asked by Jake on September 25, 2013
54. ## MATH

how do i solve this into a proportion, 3oz for \$1.65; 5oz for x dollors

asked by jordan on December 18, 2010
55. ## Math

S= L(1-r), solve for r I tried both distributing L and dividing by it, but I am not sure which way is correct. Any help would be much appreciated.

asked by Ryan on September 14, 2015
56. ## Finite Math

Solve the matrix equation AX =B for X using: A= [ 2 -3] B= [4 ] [ 1 5] [2 ] (theres a blank space between the 4 and the 2)

asked by Mike on July 23, 2009
57. ## Algebra II

Solve for x. Give your answer using interval notation. a. |2x-3|¡Ý 12 b. 9-2|x+1|

asked by Sue on September 12, 2010
58. ## Math

I need help with this problem. I tried to solve but I failed each time Question: bx+3/5=-6

asked by oof on May 3, 2018
59. ## physics

how do i simplify the equation: v^2=Vo^2+2ax to solve for a? a=acceleration

asked by ashley on February 4, 2010
60. ## Math

Solve the equation for x. 30x+10x=40=16x+8

asked by Stephanie on September 4, 2012
61. ## Algebra

Use the sqaure root property to solve the equation. 7x^2-4=0

asked by Jaya on October 23, 2011
62. ## Math asap

Explain a strategy you could use to mentally solve this problem? 33 1/3 of 48

asked by Soamy on May 15, 2012
63. ## math

Solve the following and express the answer in scientific notation: 10^3 x 10^4. A. 10-^1 B. 10^1 c. 10^6 D. 10^7 I say D

asked by shana on November 7, 2012
64. ## algebra

plz solve factor trinomial a^2+10a+16

asked by rr on May 18, 2012
65. ## math

Solve the equation cos3x=cos2x for 0¡Üx¡Ü360

asked by Sarah on June 12, 2014
66. ## calculus 2

How to solve the definite integral of(3x+pi)cos3xdx from [pi over6,pi over 3]

asked by bern on December 3, 2017
67. ## Literal Equations

y + 2x = 5; x = -1 How do I solve for y? What I did was move y to the other side and divide all the values by 2. So, I first got x = 2.5 - y/2.

asked by Anonymous on September 27, 2013
68. ## Data Analysis

I have a mathematical problem that I don't know how to solve in Excel, where might I go for help?

asked by Bryan on July 18, 2009
69. ## Algebra 1

Solve 11x-7

asked by Esther on December 17, 2010
70. ## functions 12

solve (x^3)+(12x^2)+(21x)-(4)=(x^4)-(2x^3)-(13x^2)-(4) the answers are x=-1,-3,7,0 but i need to know how to do it

asked by kerry on October 22, 2011
71. ## Math

How would I use Distributive property to rewrite each expression then solve 35 x 21

asked by Rebekah on November 18, 2008
72. ## math

v = h(6 - (1/3)(2 - (2 h/5))^3 ) i try to solve this equation and i got (350+4h^2)/75 im not sure if this is correct please check it for me!

asked by kk on February 19, 2009
73. ## Math

solve for x:3x2+2x+6=10(correct to two decimal digits)

asked by Tabisa on October 30, 2010
74. ## math helpppp !

Solve the equation and check soultion 2(13t-15)+3(t-19)=0

asked by Anonymous on June 9, 2014
75. ## 5th grade math

can anyone solve this problem for me? 2cm 72mm + 69 mm =_________

asked by Bella on November 18, 2008
76. ## algebra

Solve equation by using the quadratic formula -3x2-2x-5=0

asked by Melissa on July 20, 2009
77. ## Albebra

c squared-4c-12=0 we have to solve each equation by completing the square.

asked by Ron on December 4, 2007
78. ## algebra

please solve 5u^8v-6uv^5+6u^8v-5uv^5 collect like terms

asked by rr on May 15, 2012
79. ## algebra (solve for y)

0=e^(2y)-e^(y) Need to solve for y here, don't understand why answer is -ln(2) in the book. Thanks.

asked by David on March 4, 2014
80. ## Functions

Solve sin^2x - 2sinx - 3 = 0 on the interval xE [0, 2pie]

asked by SHINee on November 14, 2013
81. ## Algebra 1

How do you solve multi-step inequalities with fractions?

asked by Skippy on October 19, 2009
82. ## Math

Explain a strategy you could use to mentally solve this problem? 33 1/3 of 48

asked by Anonymous on May 15, 2012
83. ## Math -

8x + 14y = 24 6x + 7y = 10 Solve for x & y I tried multiple times but I just can't seem to get the right answer.

asked by Kathy on January 27, 2017
84. ## maths

how to solve cos70/sin20+cos57cosec33-2cos60?

asked by Anonymous on July 27, 2011
85. ## Science-Chemistry

Can you please help me solve r1/r2 = sqrt(M2/M1)for M1. My answer: M1=M2r2^2/r1^2 Is this correct?

asked by Maddy on January 28, 2015
86. ## Trigonometry

Solve the equation for all values of x. 2sin(2x)-√3=0, on the interval [0,2π).

asked by AwesomeGuy on February 28, 2013
87. ## math

Solve the following and express the answer in scientific notation: (5.4 x 10^4) x (4.5 x 10^8) A. 2.4 x 10^10 B. 24 x 10^11 C. 24 x 10^12 D. 2.4 x 10^3 I say D

asked by Drew on November 7, 2012
88. ## Math

Solve for the variable: 17d-16=-43d-4 I got d= 1/3 but I'm not sure.... probably wrong

asked by Cate on May 26, 2012
89. ## math

Solve the equation using the addition property of equality. p – 1 = 4

asked by loretta on January 24, 2014
90. ## Algebra 2

Solve 5x^2 − 34x = 0 by factoring. What is the smaller answer?

asked by Anonymous on November 10, 2014
91. ## math

Solve the following and express the answer in scientific notation:(3.5 x 10^6 / (4.2 x 10^8) A . -8.3 X 10^-3 b. 8.3 X 10^3 c. 8.3 X 10^-2 d. 8.3 X 10^-3 I say A

asked by shana on November 7, 2012
92. ## algebra II

use alaytical and graphical methods to solve the inequality. (3x+6/7x^2+5) > 0

asked by help on July 10, 2011
93. ## math

the product of a number and 7 is at least 28. write and solve the inequality.

asked by tiffany on February 9, 2017
94. ## math

Solve the simultaneous equations: 3x-2y=19 2x+3y=4 Do i create a 3rd eq like this? 6x-4y=38 and where do i go from here?

asked by Destiny on June 24, 2009

y+2/y=1/y-5 *Please solve the rational equation. Done the same way as the previous post.

asked by Margie on March 4, 2007
96. ## math

Solve the following and express the answer in scientific notation: (5.4 x 10^4) - (2.5 x 10^6) A. -2.45 x 10^6 B. 2.45 x 10^6 C. -2.45 x 10^8 D. -2.44 x 10^2 I say D

asked by shana on November 7, 2012
97. ## math

Solve the following and express the answer in scientific notation: 10^3 x 10^4 x 10^-2 A. 10^5 B. 10^6 C. 10^7 d. 10^8 I say A

asked by shana on November 7, 2012
98. ## Math

Solve the logarithmic equation for x. Log3(x^2 − 5x − 9) = 3 I Have no idea

asked by Anonymous on November 22, 2011
99. ## math

The volume of a sphere of radius r is V=4/3πr^3.Solve for r.

asked by Andrea on April 12, 2018
100. ## alg 2.

solve. we can use a calculator on this part... 2e^-x+4=21. how do i do this problem. i know that you subtract 4, but what do you do after that?

asked by Miley on May 19, 2008