# 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 448
1. ## algebra ll

where can i find a website that helps me understand and solve equations like x^2= -900?

asked by coral on March 18, 2009
2. ## trig

Solve the equation for exact solutions over the interval [0, 2pi]. 4 cotx+2=-2

asked by me on November 29, 2011
3. ## Algebra 2

please help i seriously don't understand any of these!! solve by factoring: 1.x^3-12x = x^2 simplify 1.4c/12c^5 2. a^2x/a 3. x^3y^4/2 x^2y^6

asked by Ashley on April 3, 2011
4. ## Math

How would I solve the quadratic equation: 2x^2 + 6x = 0 I would factor out 2x to give 2(x+3)=0 2x^2 = -6x; 2x = -6; x = -3. hopefully thts the answer!

asked by Sarah on August 15, 2007
5. ## math

how do i solve for x ... with excel preferbly. 0=4x^3x2.14x10^-4x^2+2.0x10^-9x-3x10^-11 thanks!

asked by WILLIAM on October 7, 2009
6. ## Math

I need help with these please: 4. Simplify sqrt27/75. The answer should be in simplest form 5. Solve for w. (3w-15) (w^2 + 11w +30) = 0 Thanks -MC

asked by mysterychicken on November 20, 2013
7. ## algebra

It is possible for a quadratic equation to have no real-number solutions. Solve. t^2+10t+26=0

asked by gina on July 6, 2011
8. ## Math

How do I solve: log6 (x^2-5x) = 1 1/2log5(r-2)-log5 r) log2 (x-1/x^8) I really don't know how to do these or even start

asked by lt on March 16, 2009
9. ## MATHS2

Solve (0

asked by A GOODSTUDENT on September 13, 2016
10. ## Algebra 1

Solve for x "variable": Rectangle with length of (8x) m and width of (2x) m has a perimeter of 140 m.

asked by Belle on September 30, 2012
11. ## algebra

Could someone please just basically describe how to solve rational equations? I don't understand them. :(

asked by mark on May 17, 2010
12. ## algebra

Solve | 4 x+ 4 | = 3. Enter your solutions in a comma-separated list. x = I came up with -1/4 which is wrong

asked by kim on June 19, 2015
13. ## Algebra II

Use analytical and graphical methods to solve the inequality: x©ø+10x©÷+31x¡-30 (2x)/(x+1)¡(4)/(x-3)

asked by N/A on July 6, 2011
14. ## Algebra

I have to solve equations using the quadratic formula and I know how to do some of it. I have it down to this 4+/- 2 square root of 10 all over 6. How do I simplify that?

asked by Brittany on November 28, 2007
15. ## Philosophy

Were any of the Pre-Socratic philosophers successful in attempting to solve the problem of the One and the Many?

asked by Janice on March 1, 2010
16. ## Math

What positive value of b makes 9^2-bx+4 a perfect square trinomial? How would you solve this problem? Thanks

asked by Shadow on March 25, 2012
17. ## algebra 1

10 x-10

asked by esther on December 30, 2010
18. ## trig

how to solve for the value of sine and cosine function of 0,90,180 and 270 degrees?

asked by au on January 8, 2013
19. ## Math

Solve the proportion using cross product round to the nearest hundredth if necessary 3.9/2.6 = y/6.2 A. 12.26 B. 16.35 C. 4.13 (I think this one) D. 9.30

asked by Lola on November 29, 2017
20. ## Geometry

The m

asked by Anna on December 14, 2010
21. ## Algebra

Suppose f(x)=2x-5 and g(x)= |-3x-1|. Find each value. f(1)+g(2) How would I solve this problems? If anyone could give me the step, thanks a lot.

asked by Shadow on October 18, 2011
22. ## Math

how to solve the following equations giving your answer correct to 2 decimal places where necessary (a) (x+1)2=9

asked by Hamza Qamar Mirza on August 24, 2016
23. ## algebra

solve graphically,giving real roots to the nearest tenth. x2-4x+3=0

asked by heaven on May 6, 2012
24. ## albebra

solve arithmetically and algebraically. The perimeter of a rectangle is 54 cm. Its length is 6 cm. What is its width?

asked by Robin on April 14, 2014
25. ## 1 math question help

Write the inequality and solve for the following problem: The result of 6 subtracted from a number n is at least 2.

asked by Jman on December 6, 2012
26. ## Math

Solve the following proportion for x: (Decimal answer rounded to nearest tenth) 4.5: x = 13.5 : 20

asked by Mike on May 18, 2008
27. ## Algebra:quadratic equations

How do you solve this by factoring? 4p^2 + 121 = 44p I seriously don't understand and it's frustrating for me. Please help. (:

asked by Landon on December 4, 2008
28. ## math

Antonio said, "To solve 506-288, I can think of 5 hundreds as 50 tens." How might this help him subtract?

asked by Anonymous on November 6, 2008
29. ## Pre-Calc/Trig

Go over this with me please, I forgot how to do it. Solve the polynomial equation. 15x^3-119x^2-10x+16=0

asked by Anonymous on November 17, 2014
30. ## Math

How would you do the inverse of this function: -1/7sqrt(16-x^2)? -I know you switch the x and y and solve for y. I keep on getting a weird answer. Help!

asked by Sandy on August 10, 2011
31. ## Algebra

How to solve this problem by rationalizing the denominator? Steps please. 4sqrt6/sqrt30

asked by Kaai97 on May 12, 2016

If y varies directly as x and y is 3 when x is 8, what is the constant of the variation? I don't understand what they are asking and how to solve this. Please help if you can! Thank you so much! :)

asked by Faith on May 29, 2009
33. ## math

6 ⅚ – 17/18 Solve the following problem and convert to lowest terms (mixed number)

asked by natasha on October 26, 2013
34. ## algebra

translate the verbal phrase “ 3 less than the product of 4 and a number is 17” into an equation, then solve

asked by kiarra on August 10, 2013
35. ## Physics wavelength question, help please .

The energy of an X-RAY quantum of wavelength 1.0 X 10^-10 m is. its answer is 1.99 X 10^ -15, but i don't know how to solve it , thanks help please

asked by Shahab Mirza on October 2, 2014
36. ## Math

So, there's a quadrilateral ABCD How would I find how long AD are? The point for A is (4,4) for D s (2,1) Is there some way to solve this without using a formula?

asked by Amy on October 10, 2010
37. ## algebra

Solve for n: 5to the second power n + 1= 1/25 express answer as a common fraction.

asked by sal on January 30, 2011
38. ## algeb collage

solve the inequality,express using interval notation x3-5x2-14x>0

asked by vince on September 26, 2007
39. ## math/computers

Problem: Solve X mod Y for all positive integers. Do so without using multiplication or division.

asked by sally on April 16, 2010
40. ## Math

Solve the inequality. [( 2x^2+5x-3 ) / (x^2 -8x+ 16) ] >= 0 I factored out the bottom to (X-4)(X-4). The top should be 2(x+ ? )(x- ?). What would I do next to finish the problem?

asked by Ken on May 9, 2016
41. ## Vectors problem help?

If A = 3i + 6j -2k, then unit vector parallel to A will be answer is 3/7i + 6/7j - 2/7k solve it please, because i don't know how he got that answe thanks

asked by Shahab Mirza on October 2, 2014
42. ## HELP! Geometry

How would you solve this? Graph each fi gure in the c oordinate plane. Find each perimeter. 14. X (0, 2), Y (4, 2 1), Z ( 2 2, 2 1)

asked by Unknown on September 5, 2013
43. ## math

What is original value if the total is 40 and the sale tax is 8.75%? y * 8.75 = 40 is this the setup to solve the problem?

asked by Kenny on January 22, 2010
44. ## math

solve: perimenter of triangle perimeter is 12 meters determine values x, x+1, and x+2 x(x+1)+(x+2)=12

asked by Maddy on November 5, 2008
45. ## Math

3^2x - 11(3^x) + 30 = 0 ; solve for x. I know that you can substitute 3^x with another variable like y to make it easier, so it looks like this: y^2 - 11y + 30 = 0 ...unless I did something wrong there. Help please? Thanks!

asked by Momo on March 21, 2009
46. ## precalculus

solve equation for solutionn over interval [0,360): cot(è)+4csc(è)=5

asked by mike on May 13, 2013
47. ## math

Solve the equation (if possible). (If an answer does not exist, enter DNE.) (15 +y) / (y) + (36+y) / (y) =155

asked by Anonymous on January 27, 2019
48. ## chemistry

Fill in the missing value for V. P=1.2 atm, n-5.00 and T= 300.15 K....how do I set up the PV=nRT or do I solve in a different way?

asked by michele on March 19, 2012
49. ## Physics (vectors)

Could you please help me with this exercise? Thanks. Adding and substracting vectors Solve for the unknown variables: (a) (a, b) + (3, 0) = (6, 7) (b) (11, c) + (d, 5) = (-12, −3) (c) (5, 5) + (e, 4) = (2, f) (d) (-1, −3) − (5, g) = (h, 2)

asked by Kathy on February 13, 2013
50. ## math

Solve the following inequality. Write the answer in interval notation abs value of x+4

asked by Jenn on October 2, 2009
51. ## Chemistry

I don't get this problem... 6.0 N H2SO4 = ________ M How can you solve for Molarity without mL? Thanks, much appreciated!

asked by Adry on May 3, 2011
52. ## geometry

The perimeter pf an equilateral triangle is 18 cm make an equation for x.Solve this ,and find x

asked by vyom on November 24, 2011
53. ## math

Solve the proportion using cross products. 8/20 = k/110 (A)99*^* (B)122 (C)3.3 (D)2.9 Am I correct?

asked by haylee on November 16, 2016
54. ## MATH

solve traingle ABC if A=63 degrees 10minutes, b=18 and a=17. Mark all solutions clearly.

asked by Tareena on May 25, 2008
55. ## college algebra

how do I solve this: (17x^3-5x^2+4x-3)-(5x^3-9x^2-8x+11) and putting the resulting polynomial in standard form?

asked by Joe on September 29, 2012
56. ## Physics (vectors)

Could you please help me with this exercise? Thanks. Adding and substracting vectors Solve for the unknown variables: (a) (a, b) + (3, 0) = (6, 7) (b) (11, c) + (d, 5) = (-12, −3) (c) (5, 5) + (e, 4) = (2, f) (d) (-1, −3) − (5, g) = (h, 2)

asked by Kathy on February 13, 2013
57. ## math

A: Solve the following equation: k2 + 4k = 0 A: By factoring B: By using the quadratic formula D: Do the results in A, B, differ from each other? Why or Why not?

asked by jillian on February 28, 2010
58. ## accounting

how can I solve this problem stockholders invest \$25,000 cash in the corporation

asked by Jo on February 1, 2011
59. ## precalculus

solve equation for solutionn over interval [0,360): cot(è)+4csc(è)=5

asked by mike on May 13, 2013
60. ## math

How do you solve a division problem using subtraction? (3rd grade math)

asked by joy on October 14, 2008
61. ## math

)SIMPLIFY i^2 square root of -80 2)SOLVE 49x^2+100=0 3)14-i^6 divided by i

asked by kaleb on November 29, 2010
62. ## adv. algebra

1)SIMPLIFY i^2 square root of -80 2)SOLVE 49x^2+100=0 3)14-i^6 divided by i

asked by kaleb on November 29, 2010
63. ## Analytic Geometry

Find the equation of a circle passing through (3,7) and tangent to the line x-3y+8=0. Please, How do I solve this? Help me

asked by Lea on January 26, 2013
64. ## Geometry

OMG! I HAVE A BUNCH OF PATTERNS AND I DON'T KNOW HOW TO SOLVE THEM! THINGS LIKE 61, 52, 63, 94... what the poop? help!

asked by Sarah on August 17, 2011
65. ## Plane and solid geometry

Change to standard form 2x^2+4y^2-12x-64y-16=0 i don't know how to solve it.

asked by Loraine on October 12, 2016
66. ## math

You purchase a shirt for \$8.50. There is a 6% sales tax. Your total cost will be A. \$8.55 B. \$8.98 C. \$9.01 D. \$13.60 how can i solve this?

asked by k on May 28, 2009
67. ## Math - Trig

Explain why we cannot solve an oblique triangle with the Law of Sines given SAS.

asked by McKenna Louise on February 6, 2014
68. ## Math

How many ways can 6 people line up for a race. This is is a combination, but I do not know how to solve it. Help is appreciated.

asked by Gaby on March 22, 2009
69. ## Logic

Can someone please help me solve these problems? I have to use the 17 rules of inference to prove the arguments valid: 1) 1. T = R 2. (~R > ~T) > (P . ~S) / ~S v T 2) 1. C > F 2. A > B 3. ~F . A 4. ~C > (B > D) / B . D 3) 1. (S v Q) / ~P > ~S 4) 1. D > P

asked by Brayden on August 16, 2011
70. ## Analytic Geometry

Find the equation of a circle passing through (3,7) and tangent to the line x-3y+8=0. Please, How do I solve this? Help me

asked by Lea on January 26, 2013
71. ## marketing

identify three problems that a marketing communicator must solve when creating an advertisement.

asked by denise on February 24, 2010
72. ## pre calculus

how do i solve this problem: Draw the angle in quadrant I whose terminal side is on y+4x

asked by Emily on August 24, 2011
73. ## Algebra 1

How would you solve the problem (w - 2)^2 ???? So far I've gotten w^2-2w*2-4 Where do I go from here? Have I even gotten what I have right? I understand when I'm with my teacher, but as soon as I got home, I was a little lost. So any help would be great!!

asked by Cecilia on April 20, 2010
74. ## word problems in algebra

the hours or min in 345 seconds how do I construct the equation and solve

asked by Ron on March 19, 2012
75. ## differential

solve dT/t=k(T-Tm(t)) using laplace transformation, where Tm=50+20U(t-h) and where U = unit step function.

asked by armut on September 27, 2012
76. ## College Algebra

1 - 1 = 1 ______________________________________ 4x-12 2x-6 x^2-3x Solve the equation (its subtracting the first two fractions and equalling the last fraction)

asked by Tim on September 29, 2015
77. ## math

SOLVE THE EQUATION BY FACTORING PLEAZE EXPLAIN.THANKS. 19. 6X TO SECOND POWER-10X-4=0

asked by SYNESTER on March 31, 2008
78. ## math 117

How to do you Put in scientific notation (400)*(3000) Solve a^m*a^g please help I do not understand!!!:(

asked by Julissa on December 8, 2008
79. ## Trigonometric Functions

Given that 0 < or = x < 2pi, solve each of the following equations in radians. sin2x=square root of 3 over 2

asked by KumonUnhappyFace on July 15, 2010
80. ## Math last question i promise

I have another problem: Solve this equation: \$19.95 + \$.99m + \$65.32 = \$144.67 I swear this is the last question! I'm sorry I am asking so much, I just need a little help.

asked by Charlotte on September 27, 2013
81. ## Math

how would you graph x>-2 and how would you solve the sum of two numbers is 3. their difference is 1. find the number.

asked by Lulu on April 10, 2011
82. ## Geometry

While on a tour in Greece, Tatyanna saw that temperature was 5∘ celsius. Solve for F∘ in the formula. C= 5/9 (F-32)

asked by Keonn'a on September 2, 2017
83. ## Algebra 1

solve using the multiplication principle. Then graph -12x>-60. God Bless you all for your help.

asked by Esther on January 6, 2011
84. ## Maths

This is math question plz tell how to solve it What percent is 95paise of rs10

asked by Simran on January 9, 2013
85. ## math

What is the value of t in the equation below? (7^-64)x(7^-150)/(7^-7)x(7^2)=7^t Help please i get lost when its a huge problem like this but if it's short i can solve it.

asked by IDontKnow on October 13, 2016
86. ## math

If rstv=1 and stuv= 0 which of the following must be true? A. r

asked by Adrienne on October 15, 2008
87. ## Trig

2sin^2(x) = 2 + cos(x) interval [0,2pi) How do I solve this? Help would be greatly appreciated!

asked by Wendy on September 16, 2011
88. ## Algebra 1

Solve then graph a+3 ¡Ü -17. Sorry, I think i forgot to include the less or greater sign in the first post. Thank you very much.

asked by Esther on January 6, 2011
89. ## algebra

solve the inequality (x-3)/10 >_ (greater or equal to) (x-2)/3 how would you do this? I don't understand how to do the fractions

asked by Chad on November 8, 2009
90. ## Math

Explain how factoring is used to solve quadratic equations. Demonstrate the process with an example.

asked by Opera on April 24, 2011
91. ## Algebra

Solve this quadratic eqution: 6a^2 + 13a + 6=0 (^2 means squared...sorry for confusion...)

asked by Angel on February 2, 2012
92. ## math

Solve the equation. (Find only the real solutions.) x2 - x - 2 = 0 they also said there is a smaller value and a larger value ??

asked by Cassy on January 19, 2014
93. ## Algebra 2

Solve the following algebraically X+2y=17 X-y=2 can you pls leave the steps of how to complete this problem

asked by Tam on October 14, 2015
94. ## Math

Find the number that completes the equation. blank = 2 ----- --- 4 20 1/10. 2/5. 2. 4. Please explain how I could solve this. :)

asked by LOVE on February 4, 2016
95. ## MATHS

a) SOLVE FOR W:W+6TW=11-W b)Make j the subject of the formula: r=9-7jk+4jt^2

asked by HEJUMACLA on October 15, 2015
96. ## equation help

Solve this equation giving the ansswer to one decimal place? x2 = 108

asked by JIMJO on June 16, 2010
97. ## trig

use the discriminant to solve for the smallest value of b that would make the roots of the equation x^2+bx+5=o imaginary

asked by jessica on February 2, 2012
98. ## geometry

Set up a proportion to solve for RT using the scale factor 3:1, and use it to find the length of RT.

asked by Anonymous on June 30, 2009
99. ## math

how long would it take for the investment to triple using this equation: A=3200e^(0.062t) and would i solve this

asked by j.davis on November 1, 2010
100. ## MATH

Use your calculator to compute the actual roots. Use the Quadratic Formula to solve x2 – 4x – 8 = 0.

asked by winston on March 12, 2014