# 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 578
1. ## Math

Write a word problem using 7 groups. Solve the problem

asked by Anonymous on December 8, 2015
2. ## math

How can I solve this problem by subtract (1) -2.3-(-8.8) How can I sove this problem by multiply (2) (1.3)(10)(-4)

asked by PJ on September 18, 2008
3. ## math

Use quadratic formula to solve each equation 3k^2+6=6 I get 3/2 but I can't seem to get the other half of the equation such as x=3.7 or .26 etc...

asked by beli on May 21, 2011
4. ## Math

Write a story problem that is associated with this proportion, then solve your problem. 5/\$21 = 12/n

asked by Kathy on March 8, 2018
5. ## math

Solve the equation. Check the equation. c= square root of(3c-8) Please Help!!!! Thanks.

asked by Sarah on January 12, 2010
6. ## Math

can someone help me solve for x for this equation (0.5)(((cos(180-x))^(2))(cos(90-x))^(2))=0.0500

asked by Po on December 2, 2016
7. ## Pre calculus

For the most part, will a law of cosines always be one triangle? As in one triangle to solve?

asked by Luis on March 26, 2014
8. ## Math

Solve each equation. Write each equation in simplest form. -6q + 5.8 = 23.8 A q = 3 B q = -3** C q = 1.83 D q = 4.93

asked by Louis on September 18, 2016
9. ## Pre-Calculus

How do I solve: sin theta = -1 for all real values of theta?

asked by Mary on October 25, 2008
10. ## algebra

solve for h: v=lwh V=lwh 1. divide lw on each side 2. VLW= H Am I right?

asked by emma on September 17, 2012
11. ## algebra

Solve the equation -2v-7=-23 can you help me step by step on how to get the answer because theirs more of these and I wanna be able to do them on my own.

asked by Charity on December 22, 2014
12. ## Math

Solve each equation for 0≤x

asked by Leslie on March 6, 2012
13. ## Math(Please help)

.50 - x / x = 3.20e-1 I need to solve for x. I was going to do .50 X 3.20e-1 and then take the square root but this is not correct. I am not sure what to do. Thank you for your help.

asked by Hannah on April 17, 2012
14. ## Two numbers with exponents??

3^3*3^33 a. 3^24 b. 3^30 c. 3^36 d. 3^99 I don't get it every time I try to solve it my answers don't match

asked by Helpmeplease on June 2, 2014
15. ## math

solve tan2(x+41 degrees) in real number fo degrees

asked by Anonymous on August 13, 2010
16. ## math

Let A = (−7,−4) and B = (7,4), and consider the equation PA•PB = 0. Describe the configuration of all points P = (x, y) that solve this equation.

asked by lucy on December 6, 2018
17. ## math help

This problem is a little different Simplify: ^5 sqrt symbol(x^7 y^4) How would I solve this problem?

asked by Shawn on October 26, 2008
18. ## Algebra

Write a story problem that is associated with this proportion, then solve your problem. 5/\$21 =12/n

asked by Kathy on March 8, 2018
19. ## PreCalc

Find the values of a and b if f(x)=ax^3+bx^2+4 is exactly divisible by both (2x+1) and (x–1). With these values of a and b, solve the equation f(x)=0.

asked by Anthony on December 1, 2017
20. ## algebra

1/2x-3/4y=-3-1/2; find value of x 2x-3=x-3y-1; find valud of y 1. graph 2. solve by substitution

asked by Linda on March 11, 2008
21. ## Algebra

1/2x-3/4y=-3-1/2; find value of x 2x-3=x-3y-1; find valud of y 1. graph 2. solve by substitution

asked by Linda on March 11, 2008
22. ## Geometry

Solve the quadratic equation. 13) x2 - x = 72 A) -8, 9 B) -8, -9 C) 1, 72 D) 8, 9 Can some one please check my answer and let me know if I did it the right way. x2-x-72=0 (x-9)(x-8)=0 so the answer is D 8,9

asked by Emory on September 5, 2009
23. ## algebra 2

solve for x (x-4)(x+2)=40 you need to make it eaqual to 0 and the correct answer is 8 and -6. how do i get this answer

asked by kristin on November 28, 2007
24. ## Calculus

I need some help understanding this limit formula, could someone please explain how to solve for f(x)=x^2+1 using this formula: (f(x+Δx)-f(x))/(Δx)

asked by Christian on August 30, 2009
25. ## Math

1.Sally age is 12 years plus half her age. How old is she? 2.Given that: 4x-y+9=0 and 3y-2x=7, solve for x.

asked by Linda on August 27, 2009
26. ## Math

cent, cent, scent equals 35128; how do you solve it?

asked by Emily on November 21, 2010
27. ## Math

Can someone solve this showing the steps involved 4^log2(2^log2 5)

asked by Chuck on May 23, 2011
28. ## Math (PLEASE HELP!)

How do you solve sin2θ−cosθ=0 between -pi/2 less than or equal to θ less than or equal to 3pi/2?

asked by Anonymous on July 13, 2016
29. ## Math Linear Algebra

Find the inverses of the matrices. Let A = 1 2 5 12 b1 = -1 3 b2 = 1 -5 b3 = 2 6 b4 = 3 5 Find A^-1, and use it to solve the four equations. Ax = b1, Ax = b2, Ax = b3, Ax = b4

asked by Allan on October 5, 2011
30. ## Math

Please help I have the answer to the problem but can figure the steps to solve it. 1/4 = 3 - 2x-1/n+2 I know the answer is -26/3

asked by Alicia on November 27, 2007
31. ## algebra

Given the following endpoints (A & B) and midpoint (M), solve for x and find all possibilities for the endpoints. M = 45, A = X, and B = X2

asked by Anonymous on June 15, 2010
32. ## Precalc

Solve for x log[1/3](x^(2) + x) - log[1/3] (x^(2) - x) = -1 Steps too please. so far I tried this and I got 3 = (x+1) / (x-1) I asked this question before, but what would x= ?

asked by Amy on January 27, 2011
33. ## algebra 1b

i need to know how to solve certain problems like this 4x=2y-10 x+2y=5 i need examples of this and shown to me step by step

asked by erica on March 21, 2009
34. ## Math

16. r over 4 – 1 = 4 (1 point) 1.3 0.8 12 20 Solve the inequality. 17. 12p < 96 (1 point) p < 8 p < 108 p < 84 p < –8

asked by Anonymous on January 18, 2013
35. ## math

How do I solve this problem- how many 2/3 x 3 inch slices can I get out of eight 12 x 6 inch cakes?

asked by Debbie on October 5, 2011
36. ## Algebrq

How do i solve sqr4z+3=4sqr3. thé 4z+3 is under thé radical

asked by Michelle on May 31, 2010
37. ## Math

For f(x) = 3x + 4 and g(x) = x - 1. Calculate (f o g)(x). For f(x) = 3x + 2 and g(x) = x². Calculate (f o g)(-2). Consider the function. f(x)= -2x+1. Find the inverse of f(x). Please help! How do I solve this?

asked by KC on November 9, 2016
38. ## Algebra 1

How do I solve this quadratic equation using the quadratic formula "8a(squared)-a+2=0"

asked by Blessing on June 15, 2017
39. ## math

a right 90 degrees triangle/ label L,J and K. JK is 7 and angle L is 31.6.solve the given right triangle

asked by bell on December 8, 2010
40. ## Math

solve the ivp dy/dx = 1/(sqrt(1-x^2)) with initial condition y(sqrt(3)/2)=0

asked by Mark on September 19, 2012
41. ## Math (Trig)

Solve the equation for exact values of x. sin(x) = 1-2(sin(x))^2

asked by Anonymous on December 16, 2007
42. ## Algebra 222

Please help me solve these using interval notations? C equals {w|w > 1} D equals {w|w greater than less than 5}

asked by Tika on April 27, 2015
43. ## Calc Help :(((((

Solve it step by step so I can't do the rest. lim x->-infinity (ax^2+b)/(cx+d) Thank you!

asked by Kris on February 23, 2014
44. ## Precalc

How to solve this inequality and graph? (2x+5)/(x+1) > (x+1)/(x-1) would I first get rid of x-1 and divide x+1 over to get (2x+5)(x-1)/(x+1)(x+1) > 0 if so, then who would I graph this?

asked by Amy~ on September 24, 2010
45. ## algebra

solve for variable h s equals 2 pie rh +2 pie r squared

asked by mary on August 14, 2010
46. ## Algebra

Solve. ã9x+81=x+5 this is my answer:x=35+3ã61/2,35-3ã61/2 is this correct.

asked by Jack on July 2, 2008
47. ## 8th grade Algebra I (junior level math)

How do i solve proportions? step by step answers plz!!!! EXAMPLE! g/5 = 6/10

asked by Nick on December 1, 2009
48. ## Math

can someone help me solve for x for this equation (0.5)(((cos(180-x))^(2))(cos(90-x))^(2))=0.0500

asked by Po on December 1, 2016
49. ## maths

Can any one help with the following please: Solve the initial-value problem: problem: dy/dx: 4(3cos(6x)-1)/1+2x-sin(6x) y=12 when x=0

asked by Claire on February 8, 2011
50. ## MA110/ help pleaae

How do u solve 1000 base 10 compare to 200 base 10

asked by Enis on February 13, 2013
51. ## Algebra 1

if i solve this problem vertically; (1+ sqrt3)*(1+ sqrt3) do i get 5+ 2sqrt3?

asked by Jahnay on January 11, 2012
52. ## Algebra

How do I solve this equation? Please explain and do step by step. 6m squared -5m-14=0

asked by Ann on February 13, 2013
53. ## geometry

since segment KL and segment LM are congruent, set up an equation to solve for x. What is the value of x? K (5x-4) L (3x+12) M

asked by morgan on August 17, 2011
54. ## Algebra

Explain how to solve a quadratic equation using the quadratic formula.

asked by Tammy on August 9, 2010
55. ## Math-Fractions

How would I solve these two problems. (We have to simplify our answer) 5/7 divided by 8/21 12/7 divided by 9/21

asked by Joe on January 19, 2010
56. ## Algebra

Can you help me solve this please? 31%=1-600/Q Answer: 869.6 But in don't know how to get to the answer

asked by Tina on July 7, 2011
57. ## algebra

Considering the following equation: 4y + 7x = -23 I have to solve the equation for y, but I can't use mixed numbers in my answer.

asked by Anonymous on October 15, 2011
58. ## trig

HOW DO YOU SOLVE THIS PROBLEM, sin theta>0,cos theta>0

asked by THOMAS on September 21, 2010
59. ## math graphing the y-intercept

2 y=- +1 3 dont know how 2 solve it 2 get the y-intercept dont know how 2 graph it please help and explain it please help

asked by angel on January 12, 2011
60. ## Math!Please Help Me!

Solve the following quadratic by either factoring or using the quadratic formula: 6x2 - 5x = 6 6x^2 -5x -6 = 0 (3x+2)*(2x-3) = 0 Take it from there

asked by Margie on June 29, 2007
61. ## algebra 1

Solve by substitution. y=.8x+72 20x+32y=48 How do you get y? i got the x part but i can't seem to get the y part.

asked by rachel on December 6, 2011
62. ## Math

how do you simplify this expression? -12/3*(-8+(-4)^2-6+2 Can someone help me solve this step by step plzzz!!!

asked by Lety on September 29, 2016
63. ## math

solve this problem using the power rule (10x^8) x (10x^10) =

asked by jj on March 8, 2011
64. ## Math

Solve (16x^2)^-3/4 Please help using step by step. I don't understand how to do this. Thank you

asked by Cherie on November 16, 2014
65. ## Mathematics

Solve this surd Root 147/4 divided by Root 27/2.

asked by Linda on November 27, 2018
66. ## math graphing the y-intercept

y=2/3=1 dont know how 2 solve it 2 get the y-intercept dont know how 2 graph it please help and explain it please

asked by angel on January 12, 2011
67. ## Math

find W solve c=w squared X cubed/24t squared

asked by Tom on October 14, 2009
68. ## Trig

Solve for 0

asked by mickey on October 19, 2010
69. ## Math

I just need help to solve these steps. 8 to the 2 power +9(12/ 3*2)-7 I know the answer is 129 but I'm not sure of the steps to get to it.

asked by FluttershyK22 on August 9, 2016
70. ## math

How would I solve this equation for x? 0=3.9657(0.9982^x)ln0.9982

asked by Sara on March 14, 2015
71. ## Trigonometry

Solve: 2cos^2 theta - 3cos theta+ 1= 0 interval [0, 2ð)

asked by Abigail on May 30, 2011
72. ## Math

How do i translate ? One of my questions is asking me to translate , i know the formula for translating, x+a,y+b. But a=x and b=y. How do i solve this?

asked by Isabella Meyers on December 17, 2018
73. ## Basic Algebra

I am having a hard time trying to figure out this problem, if someone could help me...I'd appreciate it: I have to solve the problem 7x-(6x+4)=4

asked by Catherine on July 9, 2011
74. ## Trigonometry

Solve triangle ABC: B= 60 degrees, C= 90 degrees a= 4 feet

asked by Adam on May 30, 2011
75. ## algebra

Solve for x 1. log5 X=3 2. Log2 16-log2 =x 3. Log9 6561=x

asked by bobby on January 15, 2009
76. ## Math

1) Given that p(-3), p(-1), and p(5)=0, which expression could be p(x)? A)x^3-x^2-17x-15 B)x^3+x^2-17x+15 C)x^3-3x^2-13x+15 D)x^3-9x^2+23x-15 How do I solve it? Please help

asked by Anonymous on February 1, 2016
77. ## math

Find the restrictions: how to solve problem 1. y = 3- sqrt(2x-8) x => 0 2. y = 9-sqrt(x -2) x =>0

asked by fagi on March 9, 2016
78. ## Math

Solve for the 101st term of the sequence whose 1st term is x-y and d=2x+y-3.

asked by Annika on June 17, 2014
79. ## Algebra

Write a number puzzle that is associated with these equations. Then solve the puzzle X+y=10 ×+2y=8 Help me

asked by Cheyenne on April 30, 2018
80. ## Math

how do I go about trying to solve this problem (6 square rootof 5 +2 square root of 7)

asked by patti on October 7, 2008
81. ## maths

solve the following equation by completing the square x(square) -13x + 21 = 0 Then x= or x=

asked by Jayden Haddy on August 3, 2013
82. ## Math

Solve for triangle ABC which have angle A =25.25, angle B =60.51 and a =3.82.Find c

asked by Nnanna on September 10, 2014
83. ## PreCal

find the discriminant of (2 + sqrt3)x^2 - (4 - sqrt3)x = 1 How do I solve something like this when it has radicands?

asked by bubble dragon on October 28, 2016
84. ## trigonometry

Solve the equation 6 cos x^2+sin x=4 if 0 is less than or equal to x is less than or equal to pi

asked by lindsay on April 23, 2012
85. ## math

Perform the given set operation. Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. please solve this: {x | x is a multiple of 2} ∪ {x is a multiple of 7}

asked by Anonymous on October 9, 2013
86. ## precal

solve the equation on the interval [0,2pi) cos(x+pi/4)-cos(x-pi/4)=1

asked by john 2020 on March 19, 2010
87. ## algebra

How to solve problem step by step 0.08x+0.09x

asked by simone on November 18, 2012
88. ## Urgent Math

Please solve it in step by step. integrate: ∫(cot2x-csc2x)^2 dx

asked by Wawen on August 28, 2016
89. ## Data Analysis

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

asked by Bryan on July 19, 2009
90. ## Math/Trig

Solve: 2 sin x - 1 = 0 for 0 degrees is less than or equal to x is less than 360 degrees.

asked by CJ on January 20, 2011
91. ## maths logarithms

Solve this equation: 5^2x+1 + 24(5^x) = 5 The answer has to be -1 but I can't understand how to get this answer. Can someone please explain? Thanks!

asked by Claire on October 17, 2007
92. ## Trig

Solve the equation in the given domain cos 4x + cos 2x = 0, 0

asked by Mark on November 14, 2011
93. ## trig

solve the equation on the interval [0, 2pi]: tan^2 x - 3 tan x + 2 = 0

asked by anonymous on May 8, 2014
94. ## MAT 116

how do I write the expression and then solve it four square dived by two square?

asked by Linn on May 14, 2012
95. ## Math

How do you do this..i have the answer i just need a step by step way to solve this.. sec(sin^-1 (2/5))

asked by Trig on November 14, 2011
96. ## Math

A triangle has verticies of (1,3) (4,5) and (6,2). Is this a right angle triangle? Solve using algebra.

asked by Homework plx on November 17, 2017
97. ## math

Solve the following equation. 16x^2 − 16x + 4 = 0 x = 1 (smaller value) x = 2 (larger value)

asked by latesha on December 17, 2011
98. ## Vectors

If Vector a = (2, 2k), Vector b = (4, -k), are perpendicular, solve for k with full solutions?

asked by Jagjot on February 22, 2015
99. ## Pre Cal

Been trying to solve this equation and I keep getting 3...any advice would be appreciated log2 (x+5)=4+log2 (x-1)

asked by Amber on May 3, 2009
100. ## Vectors Math

If Vector a = (2, 2k), Vector b = (4, -k), are perpendicular, solve for k with full solutions?

asked by Jagjot on February 22, 2015