# 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 635
1. ## math

one farm is 82 acres larger than another. together the farms contain 276 acres how larg is each farm? solve using two variables and two equations

asked by Taylor on February 3, 2013
2. ## math

one farm is 82 acres larger than another. together the farms contain 276 acres how larg is each farm? solve using two variables and two equations

asked by Taylor on February 3, 2013
3. ## pre-calculus

solve for z writing the answer in polar form: #1 z=(3,115 degrees)*(4,290 degrees) #2 (8,50 degrees)* z=(6,172 degrees)

asked by erin on February 20, 2008
4. ## Chemistry

How to set up to solve the equation 2 KCLO^3 ---> 2KCL + 3O^2 HOW MANY MOLES OF O^2 CAN BE PRODUCED BY LETTING 12.00 MOLES OF KCLO^3 REACT?

asked by Crystal on March 6, 2012
5. ## physics

solve the magnitude of two force such that if any act at right angle resultant is 5kn while the act at angle60 their resultant is square 37

asked by SEGUN on January 6, 2015
6. ## 6th grade math (student)

Throughout the season, drew scored 18 touchdowns. He scored 10 in the first 6 games. How many did he score in the last 4 games? Write the equation and solve.

asked by John on March 27, 2017
7. ## Math

Don't understand how to solve this problem: 12. A, B, C, and D are points on a line, and the lengths of the line segments are: AB = 12, BC = 4, CD = 7, and DA = 15. Which of the following is a possible order for the points? A.A,B,C,D B. A,C,D,B C. A,D,C,B

asked by Vivian on January 13, 2018
8. ## math

Solve. Check for extraneous solutions. 1) (/3x+7) = x-1 2) (3/2x)-3=9 Note: (/3x+7) is the square root of 3x plus 7 and (3/2x)-3=9 is 3 times the square root of 2x - 3 equals 9.

asked by cheyanne on March 6, 2012
9. ## math

Okay so i here is the problem......find the unit rate. I don't remember how to solve for the unit rate. Help me please i have a quiz tomorrow.

asked by kayla on January 9, 2012
10. ## Math

Define a variable and write a equation to find each number. Then solve. A number equals six less than four times a number. What is the number?

asked by Anonymous on November 5, 2018
11. ## statistics

I have no idea how to solve this. In a sample of 16 students, 15 were right-handed. Can we construct a 95% confidence interval for the proportion of all students who are right-handed?

asked by jessica on November 12, 2014
12. ## Trigenometry

VERY URGENT! PLEASE HELP SOLVE! tan(x)+1=sqrt(3)+sqrt(3)cot(x)as well as sin(2x)= 2 cos^(x) 4cos2(x) = 8sin(x)cos(X)

asked by Rachel on August 1, 2011
13. ## algebra

What is the cost, C for manufacturing x units of a certain product is given by C=x/2+30 find the number of units manufactured at a cost f 9230 solve.

asked by Slomon on June 27, 2017
14. ## math

Solve Equation by Adding or Subtract fraction using Addition property of Equality or Subtraction property of equality. x-5/6 = 1/10

asked by me on January 13, 2011
15. ## Algebra

I need help doing this problem, should I not get the same answer with each technique? Please help. What three techniques can be used to solve a quadratic equation? Demonstrate these techniques on the equation: 2x² + 3x + 1 = 0

asked by Vilma on June 17, 2012
16. ## ap calc

find the maximum value of f(x)= 3cos(x)-2sin(x) I know you have to take the derivative but after the derivative I don't know how to solve it. f'(x)=-3sin(x)-2cos(x)=0 I don't know what to do after this please help.

asked by Anonymous on November 9, 2014
17. ## Algebra 2

How do you solve x + x + x√2=10? I did x^2 + x^2 + 2x^2 = 100 4x^2 = 100 How do I continue?

asked by timmy123 on October 31, 2010
18. ## Trigonometry

Solve sin θ = 0.95 for -90º ≤ θ ≤ 90º.

asked by Molly on September 30, 2014
19. ## dma 040

Problem 1: Solve 3x-8y=19 for y y= Problem 2: A=P=PRT for R R=

asked by Anonymous on September 16, 2013
20. ## Algebra

Solve for x and check answer: Nx=4j-5x X=(4j)/(5+n) How do I do the check?

asked by Anon on October 22, 2015
21. ## college algebra

solve for x (2x-7)*(x+4)=0 i have an answer of (7/2 -4) is this correct or is the answer 5,4

asked by Jake on April 23, 2010
22. ## Algebra

Solve for n á = (n-2) * 180 / n = 180 – 360/n

asked by Rene on December 11, 2009
23. ## math

How do u solve 1/2 times 9.8 times 4 exponent 2

asked by suzzi on February 10, 2012
24. ## Algebra 2..

Solve for x. 2 times ( sqrt. of 21-x ) - ( the sqrt of 3x-6) =5

asked by Anonymous on April 13, 2013
25. ## math

Solve this 5+6 whole number 1 over 2+2whole number 7 over 10

asked by Goodness on October 18, 2011
26. ## Math

1.7 x 10^-3 = (0.0015 - x)^2 / (0.025 +1/2x) (0.025 + 1/2x) solve for x

asked by kat on October 2, 2015
27. ## math please help

solve (sq.rt 2) (tanx)(cosx) = tanx

asked by - on January 26, 2010
28. ## Math

solve log(b4)x-log(b4)2=2 (b4)=base 4

asked by ash on January 10, 2011
29. ## Math

Solve each equation for x e^(4x+1)=p log (kx)/ log (5) = c

asked by Anonymous on September 20, 2012
30. ## algebra

2-(a-1)/(a+2)=(a^a-1)/(a+2)Can you help me solve this problem step by step please?

asked by lesa on February 21, 2012
31. ## math

what is the value of x in the equation? 2(b-3)+5=3(b-1) (may you solve it step by step.

asked by Kim on October 12, 2010
32. ## math

solve log(2+x)-log(x-3)=log2

asked by sarah on May 4, 2016
33. ## algebra 1

seven less than a number t equals another number t solve for t

asked by kamryn on October 15, 2015
34. ## srinvas

solve ;2 xsquare y-3 xsquare+4 y=2010

asked by emani on November 19, 2012
35. ## Math

How do i solve the following by factorization: 1) 7.7^2-2.3^2 2) 43*56+43*44 I know how to do these manually but not by factorization.

asked by MJ on March 7, 2010
36. ## math

what percent is 23 students out of 51 students and how do you solve it

asked by George on October 30, 2008
37. ## Math check

The problem is solve x= sqrt10x-4-2 So it would be x=sqrt10x-6 right I have as x=4 is that right? or is it 2,4

asked by Shawn on October 27, 2008
38. ## calculus

Solve the equations i) log2(x + 2) + log2 x = 3. ii) 25^x + 5^x+1 + 6 = 0.

asked by MSM on July 26, 2011
39. ## math help!

(2-√2)/(3+√2) can you plz tell me how to solve it? plz hurry up

asked by Riana on January 25, 2013
40. ## Math

Solve. x-6/x-9=3/x-9. I came up with a answer of -2/3 but I don't think that is the right answer. Could someone please help? Thanks.

asked by B.B. on May 16, 2010
41. ## Algebra w/Trigonometry

How would you solve: 3.5r squared minus 5.5 + 1.5r squared plus 4?

asked by Cupcake on August 25, 2008
42. ## math

solve for x ((sqrt(lnx))/(ln(sqrt(x))))=6

asked by Rachel on February 27, 2013
43. ## Alg. II

Solve y=Arcsin 1/2 A.) -5pi/6 B.) 5pi/6 C.) -pi/6 D.) pi/6

asked by Kim on September 28, 2010
44. ## math

HOW TO SOLVE THIS? sqrt(8)( sqrt(10) - 1 ) PLEASE IT IS URGENT !!!!

asked by lana on June 17, 2010
45. ## math

HOW TO SOLVE THIS? sql 8( sql 10 - 1 ) PLEASE IT IS URGENT !!!!

asked by lana on June 17, 2010
46. ## Math

Please check Simplify 7t+3+t+9=8t+12 Simplify m-2-4m-5=-3m+7 Solve 90=5t+t 90=6t t=15

asked by Tanya on May 8, 2016
47. ## math

how do you solve these 1. 7d-2+5=20 2. 4x-10x=28 3. -4x-10x+28 4. 8y-3y+6= -10 5. 9+4w-6=12 6. 9w+4-6=12 7.18m-6-m=-16 8. -6r-r-13=-18

asked by Sara! on May 25, 2010
48. ## Precalculus

How do I solve this? 1 - 4sin^2(x)cos^2(x) = cos^2(2x)

asked by Christina on December 2, 2010
49. ## logs 2

How do you solve log(5) 20 + log (5) 10 - 3log(5) 2?

asked by Ali on November 1, 2010
50. ## Algebra

solve step by step 0=-2(8t^2-32t+21)

asked by Amy on April 10, 2011
51. ## Algebra

-5/4 × 1/3 How can I solve this step by step? I'm confused

asked by Julie on August 22, 2018
52. ## MATH HELP NEEDED PLEASE!

solve for x ((sqrt(lnx))/(ln(sqrt(x))))=6

asked by Rachel on February 27, 2013
53. ## Algebra

how do you solve this equation...its a polynomial...help please What is the equation

asked by Taylor on January 18, 2007
54. ## Math

How do I solve: -9x + 2x to the third power +8x -12x to the third power

asked by Tawny on October 16, 2010
55. ## math. logs

anyone know how to solve this step by step? e^(3ln2)

asked by Kay on September 28, 2008
56. ## math

how do I solve this following problem step by step. 8/x = 10

asked by Jay on August 9, 2011
57. ## trig

How do I solve for theta in tan theta = -1?

asked by Matthew on March 12, 2010
58. ## algebra 2

Add(1/12X^4+6/7X^3+3/8X^2+5)+ (-7/12X^4+5/8X^2-5). "Please help me solve this"

asked by esther on February 24, 2011
59. ## Math-Algebra

[SQRT(x + 3)] - [SQRT(x - 2)] =1 Can someone help me solve this equation.

asked by Mike on January 20, 2009
60. ## Algebra

Can someone help me solve these equatiions [SQRT(4 - x)] - [SQRT(x + 6)] = 2

asked by Mike on January 21, 2009
61. ## trig

Solve the following equation for È

asked by Anonymous on December 18, 2011
62. ## Math 12

How do you solve -6[cot(2pi/3)-cot(pi/3)]?

asked by Isabella on February 28, 2016
63. ## maths

solve 2x-3y plus 2 equals x plus 2y minus 5 equals 3x plus y?

asked by poppy on April 30, 2019
64. ## algebra

Solve the equation for y. Then graph the equation. 5x – 4y = 12 A.y=-5/4x-3 B.y=4/5x+3 C.y=5/4x-4 D.y=-4/5x+3

asked by Ally on October 16, 2012
65. ## st. marry

how to solve it [2-3(2-3)to the power 3]hole to the power 3

asked by sonu on February 19, 2010
66. ## algebra 1

solve step by step this problem: q-r=r, for r

asked by evelyn on September 23, 2011
67. ## College Algebra

solve the following: Log(50x)+log(x-1)=2

asked by bob on March 7, 2011
68. ## math30

Solve log2(x-1) = 5-log2(x+3) for x. base 2.

asked by alejandro on July 25, 2012
69. ## trig

solve for all solutions sin(x)=sin(2x)

asked by Crystal on April 19, 2010
70. ## algebra 1

solve this one step by step : 7a-b=15a, for a

asked by betty boop on September 23, 2011
71. ## 6th grd. MATH QUIZ HELP!!!!

Questions- 1) Solve the equation 3x=-3=-18 a) x=-7 b) x=-5 c) x=-3 d) x=5 THERE ARE MORE QUESTIONS!

asked by Ms. Walker on February 20, 2017
72. ## math

4 x - (3 -x) = 7 ( x - 3) +10 how do i solve this problem step by step?

asked by israel on September 22, 2011
73. ## Algebra

Please help me solve: [SQRT(x)]=-2 1. [SQRT(2x2 - 1)]=x

asked by George on January 4, 2009
74. ## Math

How to solve, 1300cm2=m2 1 m = 100 cm 1 m2 = 1002 cm2

asked by Joy on December 20, 2006
75. ## math

logx4 = 1/3 Solve. Is this the right answer? x^logx4 = x^1/3 4 = x^1/3 x = 4^3 = 64

asked by Nemo on September 29, 2011
76. ## Maths

Solve for x: log5(x-2)+ log5 (x-4) = log6(x-1)

asked by Jeconiah on March 25, 2013
77. ## algebrall

How do you solve 600x^2+600x+600=0

asked by kim on May 22, 2012
78. ## Algebra 2

Add(1/12X^4+6/7X^3+3/8X^2+5)+ (-7/12X^4+5/8X^2-5). "Please help me solve this"

asked by esther on February 24, 2011
79. ## Trigonometry

solve for all possible x in [0,2pi): (cscx+2)(cscx-√(2))=0

asked by Amanda on June 26, 2013
80. ## math Help

Solve 3.7x10^6 is this 37,000,000.

asked by Katie A on October 6, 2011
81. ## math

How does knowing 24 divided by 3 =8 help you solve 24 divided y 6?

asked by missy on December 1, 2009
82. ## algebra 2

Add(1/12X^4+6/7X^3+3/8X^2+5)+ (-7/12X^4+5/8X^2-5). "Please help me solve this"

asked by esther on February 24, 2011
83. ## Algebra

I understand how you solve 8+3^x=10, but I don't understand what becomes of the +8. Thanks for your help

asked by Louise on January 12, 2009
84. ## math (pre-calc)

Solve for x: 1. 3^2x+3^x+1-4=0 2. log3(x=12)+log3(x+4)=2 3. lnx+ln(x+2)=4 4. 3*4^x+4*2^x+8=0

asked by Rony on April 18, 2010
85. ## math

how would you solve for x? can you explain step by step? 40 = [(x+2.8)/2]*8.5

asked by Andrea on January 12, 2008
86. ## Algebra

Solve for y intercepts 7x+y=-2 Answer: Y = -2 7x + 2y = 4 Answer: Y = 2

asked by need help on January 5, 2016
87. ## Algebra

Use the quadratic equation to solve the equation: 4k(k+13)=13

asked by Jay on April 26, 2012
88. ## math ln

how do i solve for t: -.50=1-e^-(t/125)^5 i got this far: ln(.5)=5ln(-t/125) t=?

asked by Anonymous on January 19, 2009
89. ## Algebra 2

(1/16x^4 +3/8x^3 +1/8x^2-1)+ (-9/16x^4 +7/8x^2 -1) Can you please help me solve this problem? Thank you.

asked by Esther on February 23, 2011
90. ## Math

solve for x: log4 X - log4 2 = 2 log(2x) = 2 Now what do I do?

asked by Hannah on March 19, 2010
91. ## Math(Please check)

solve for x: log4 X - log4 2 = 2 log(2x) = 2 Now what do I do?

asked by Hannah on March 19, 2010
92. ## math/algebra

solve the equation log2(3x-2) - log2 (x-5)=4

asked by student on June 23, 2013
93. ## log[1/6](x^2+x)-log[1/6](x^2-x)=-2

Solve the equation log[1/6](x^2+x)-log[1/6](x^2-x)=-2

asked by Audrey on May 9, 2013
94. ## maths

Solve for all x such that: (1+(1/x))^(x+1)=(2000/1999)^1999

asked by un on June 12, 2017
95. ## Algebra

Hello, I need help solving a equation. I'm not sure how to solve it. The equation is: 14+(d/4)=17

asked by Josh on September 7, 2016
96. ## Math

Sin(30)=5/c I don't get how to solve.... do you do 5= Sin(30)c? Then what?

asked by Anonymous on April 3, 2008
97. ## algebra

Help me solve this problem please, I have tried so many time.I can not seem to get the problem right. x +12 2 x+ 12 < -8 =x +12 > 2 x =4 > -10 is this right

asked by Elaine on April 5, 2009
98. ## Urgent Math Help

Solve for x: 1.) ln√x-8=5 2.) log2x+log2(x+2)=log2(x+6)

asked by Porsha on November 11, 2014
99. ## math

please help me solve: (1-cos^3ө)/(1-cosө) - cos^2ө-1

asked by kayla on February 22, 2009
100. ## algebra

solve for v: p = mv explain how to get the answer and what the answer is please

asked by j on September 25, 2010