# 1. x/5=-2 A. -45 B. 35 C. -10 D. 21 2. 13x - 7= 136 A. 11 B. 15 C. 8 D. 9 Solve the following equation 3. 3x - 3=15 A. 4 B. 5 C. 6 D. 7 4

719 results
1. ## math/algebra

subtract. express in simplest form 13x/30 - 4x/ 15 = factor the first denominator. Get a common denominator. Combine terms. I will be happy to critique your work. ok 13x/30 - 4x/ 15 = This is where I get lost, I know that I have to fins the LCD but when I

asked by Diana on July 15, 2007
2. ## math

3x=13x=96 -6x-11x=-136 6.4x-2.3x=-65.6

asked by susan on March 26, 2011
3. ## math

can someone help me like ASAP 1. 13x - 7 = 136 A. 11 B. 15******* C. 8 D. 9 Am I correct?

asked by Melanie on November 29, 2018
4. ## algebra

Find an equation for a line that has a slope of -13 and contains (-7, 2) Answer choices 1. y = -13x - 89 2. y = 13x + 93 3. y = -13x + 19 4. y = 13x - 33

asked by Joe on March 10, 2018
5. ## Algebra

Can you pleas Solve the quadric equation step by step 4x square =13x+2 4x^2 = 13x + 2 subtract 13x and 2 from both sides 4x^2 - 13x - 2 = 0 Now use the quadratic formula, since it does not factor.

asked by Tony on April 11, 2007
6. ## intermidate algebra

Solve each equadratic equation by factoring. 6^2-13x-28 36-13x-28 -13x=-36+28 x=64/13 check this, correct if wrong

asked by Angelia on May 17, 2010
7. ## algebra2

Solve each of the following quadratic equations. can some explain how to do these kinds of problems 4x^2=13x+12 i believe if i am understanding this i am supose to add to where i get =0 4x^2-13x+12=0 now what do i need to do I am thinking factoring but I

asked by Tina on May 9, 2007
8. ## algebra

6^2-13x-28 36-13x-28 -13x=-36-28 x=8/13 could you check this problem it had to be done and turn in tonight.

asked by Johnnie J on May 17, 2010
9. ## Algebra

Hello all - I would like to check my work on 2 problems. Solve by factoring : x^2-13x= -12 x^2-13x+12= -12 + 12 x^2-13x+12= 0 (x-1)(x-12)= 0 x = 1 , 12 Solve using the square root property: 2x^2-35=15 2x^2-35-15=0 2x^2-50=0 2(x-5)(x+5)=0 x = 5 , -5 Not

asked by John on November 12, 2007
10. ## Chemistry

The element X has an atomic mass of 12.80 amu. It is known to have two isotopes 12X and 13X. Which of the following is true about the relative abundancies of 12X and 13X? a) both isotopes occur with the same frequency. b)12X occurs more frequently than 13X

asked by Kayla on December 1, 2010
11. ## chem

The element X has an atomic mass of 12.80 amu. It is known to have two isotopes 12X and 13X. Which of the following is true about the relative abundancies of 12X and 13X? a) both isotopes occur with the same frequency. b)12X occurs more frequently than 13X

asked by nicki on December 1, 2010
12. ## chemistry

The element X has an atomic mass of 12.80 amu. It is known to have two isotopes 12X and 13X. Which of the following is true about the relative abundancies of 12X and 13X? a) both isotopes occur with the same frequency. b)12X occurs more frequently than 13X

asked by Dawn on December 2, 2010
13. ## intermidate algebra

6^2-13x=-5 6^2-13x=-5 6^2=13x-5 I have tried this problem so much what am doing wrong.

asked by Keaton on May 17, 2010
14. ## math

Simplify (5x+3)+(8x+1) (5x)+(8x)= 13x^2 (5x)+(1)=5x (3)+(8x)=11x (3)+(1)=4 =13x^2+5x+11x+4 =13x^2+16x+4 Is this right or wrong?

asked by Sarah on February 25, 2017
15. ## Math

Solve the following equation. 4.7 = 1.13x^2 Do i square root the 1.13x^2 first? or divide both sides by 1.13?

asked by Jack on August 28, 2010
16. ## math practice help

add or subtract (2x^2+6x+1)+(-7x^2+2x-3) 5x^2-4x-2 -5x^2+8x-2 5x^2-8x+2 -9x^2-8x+2 (3x^2-7x-4)-(6x^2-6x+1) -3x^2-x-5 -3x^2-13x+5 9x^2-x+5 3x^2-13x-5 These are just practice problems. could someone help me figure out how to solve them and explain how they

asked by Umacblackbelt on June 4, 2015
17. ## Calculus

Let 5x^2 - 3xy + 58 = 2y^3 Use implicit differentiation to find y' for the above equation. The first thing I did was move 2y^3 over to that everything is equal to 0. With the -3xy I used the product rule and expanded that. After solving I got.... 10x(3 * y

asked by Nira on March 5, 2017
18. ## algebra 2

2X^4-9X^3+13X^2-X-5=0 Given that one root is 2+i, solve the equation. So far I have it set up like this: 2X^4-9X^3+13X^2-X-5/X^2-4X+5 I don't know how to get the answer, I know that I have to use long division but when I started to try it I kept getting

asked by Jessica on January 27, 2011
19. ## Math

Express the product x^2+4x/2x^2+13x+15 x x+5/x^2-16 in simplest form. a)- 1/2x+3 b)x/(2x-16)(x+4) c)(x^2+4x)(x+5)/(2x^2+13x+15)(x^2-16) d)x/(2x-3)(x-4)

asked by Alex on December 4, 2014
20. ## Math help please ASAP

2. Simplify the polynomial. –3f^2 + 4f – 3 + 8f^2 + 7f + 1 5f^2 – 11f + 2 11f^2 + 11f + 2 5f^2 + 11f – 2 –5f^2 + 11f – 2 3. (2x2 + 6x + 1) + (–7x2 + 2x – 3) 5x2 – 4x – 2 –5x2 + 8x – 2 5x2 – 8x + 2 –9x2 – 8x + 2 4. (3x2 – 7x

asked by Delilah on May 6, 2013
21. ## math

can someone show me the steps for this problem because i got it incorrect in my exam. Solve each of the following quadratic equations. 4x^2=13x+12 what i had put was that x is 3/4 and x is -4 but i just got my result back and it was wrong... 4x^2 -13x _12

asked by jas20 on March 1, 2007
22. ## math

Find the surface area of the right rectangular prism. The height is 2 in, the length is 10 in, and the width is 4 in. I think the answer is 136. I made a formula, 2(8 + 20 + 40) and I got 136. Is this right?

asked by keisha on November 12, 2007
23. ## math

Simplify  (5x+3)+(8x+1)  (5x)+(8x)= 13x^2  (5x)+(1)=5x  (3)+(8x)=11x  (3)+(1)=4  =13x^2+5x+11x+4  =13x^2+16x+4  Is this right or wrong? Simplify (2t^2-3t)-(7t^2-5t)  = (2t^2)-(7t^2)=-5t  = (2t^2)-(-5t)= 7t  =(-3t)-(7t^2)=-10t  =(-3t)-(-5t)=2t

asked by Sarah on February 25, 2017
24. ## Algebra

(i just need help filling in the ? with the reason name) Given: Ray AC is the angle bisector of

asked by Anonymous on August 8, 2017
25. ## Statistics

The following are the weekly amounts of welfare payments made by the federal government to a sample of six families: \$143, \$138, \$132, \$136, \$145 and \$136. What is the range? \$24 \$9 \$13 \$0

asked by Shawn on March 27, 2014
26. ## connections math

solve each equation and put it in simplest form. x/5=-2 A)-45 B)35 C)-10 D)21 ???? 13x-7=136 A)11 ******* B)15 C)8 D)9 solve the following equation. 3x-3=15 A)4 B)5 C)6 ****** D)7 ernesto lost 14.5 pounds what equation can we used to find how much we was

asked by dude on December 19, 2016
27. ## Algebra

A student keeps track of his target heart rate when he is exercising. The range for the number of heart beats per minute R for someone his age is /R-136/ less than or equal to 20. Determine the solution to the inequality. I believe the answer is:

asked by Blake on October 24, 2015
28. ## Math

I know that I posted this already but my question has not been answered.. Solve in the exact form. Original problem: (sqrt of 4x+1)+(sqrt of x+1)=2 4x+1 + 2√(4x^2+13x+3) + x+3 = 4 Where does the 2 come from according to the equation above?? This 2:----->

asked by Anonymous on July 12, 2014
29. ## calculus(equating coefficients)

Can somebody explain to me why equating coefficients work? Example: 8x^3+13x = Ax^3 + 2Ax + Bx^2 + 2B + Cx + D expanded into: 8x^3 + 13x = Ax^3 + Bx^2 + (2A+C)x + 2(B+D) where A,B,C,D are constants. Why does 8 = A; 0 = B; 13 = 2A + C; etc. I know they have

asked by Jay on June 6, 2011
30. ## Math last question.

(3x^2 - 7x -4) - (6x^2 -6x +1) It's a polynomial I think the answer is D or C, but I'm not sure which one. Help please A. 3x^2 - 13x - 5 B. 9x^2 - x + 5 C. -3x^2 -13x + 5 D. -3x^2 -x -5

asked by anonymous on May 11, 2015
31. ## Algebra

Solve the equation using the Quadratic Formula 5xsquared+13x-6=0 i think it is -2/5,3 5x^2 + 13x -6 (5x -2)(x +3)=0 You are correct. From Bob Pursley's work you can see that his solution gives +2/5 and not -2/5. The +2/5 is correct. drbob is right on that.

asked by Libby on December 14, 2006
32. ## math ~dont know all but check some~ pls help!!!

1. Draw a model to represent the polynomial x2 + 2x + 4. (1 point) 1 big square, 1 tall rectangle, 4 little sqaures 1 big square, 2 tall rectangles, 4 little sqaures in the shape of an "L" 2 big sqaures, 4 little squares none of these 2. Simplify the

asked by TTR+S&lt;3 on May 21, 2014
33. ## polynomials naman

If remainder on division x^3-kx^2+13x-21 by 2x-1 is -21 ,find quotient and k.Hence find zeroes of cubic polynomial x^3 -kx^2+13x-21.

asked by pankaj khanna on July 2, 2015
34. ## algebra i

two rubber balls are dropped from two different heights 136 ft and 287 ft. Find the function that describes them. I believe it is H(t) = -16t^2 + 136 and H(t) = -16 ^2 + 287. There are no answers in the book . I assumed velocity is 0. Am I correct? Thanks,

asked by Sandy on August 8, 2015
35. ## Math

Express the product, x^2 + 4x divided by 2x^2+13x+15 multiplied by x+5 divided by x^2 - 16 ? a)-1/2x+3 b)x/(2x-16)(x+4) c)(x^2+4x)(x+5) / (2x^2+13x+15)(x^2-16) d)x / (2x+3)(x-4)

asked by Alex on December 9, 2014
36. ## Math

A rectangles length and width are in a ratio of 17:2. The area is 136 square yards. What are the length and width. Have no idea how to even start to work this problem other than 17L X 2w= 136

asked by Mak on December 14, 2016
37. ## Math

1. (6.0 x 10^5) x (3.0 x 10^4) = a. 18 x 10^20 b. 18 x 10^9 c. 1.8 x 10^20 d. 1.8 x 10^9 2. (5 x 10^-2) ÷ (2 x 10^3) = a. 2.5 x 10^-5 b. 2.5 x 10^-1 c. 25 x 10^1 d. 25 x 10^2 3. (2.56 x 10^6) x (3.56 x 10^2) = a. 9.1136 x 10^12 b. 91.136 x 10^8 c. 9.1136

asked by Chase on September 13, 2012
38. ## chem

sodium chloride (relative molecular mass = 58.5) had a solubility of 36.0 g per 100g of water. the density of the solution is 1.13 g/ml. which of the following calculations would give te solubility in moles per liter? A) 36.0 x 10/58.5 b) 36.0 x 10 x

asked by Ollie on April 7, 2014

1. x/5=-2 A. -45 B. 35 C. -10 D. 21 2. 13x - 7= 136 A. 11 B. 15 C. 8 D. 9 Solve the following equation 3. 3x - 3=15 A. 4 B. 5 C. 6 D. 7 4. Ernesto loses 14.5 pounds in 7 months. Now he weighs 156.5 pounds. Which equation can be used to find how much he

asked by Gurl nerd on December 5, 2017
40. ## Math

3. (2.56 x 10^6) x (3.56 x 10^2) = a. 9.1136 x 10^12 b. 91.136 x 10^8 c. 9.1136 x 10^8 d. 91.136 x 10^12 4. In a recent year, the population of California was about 2.52 x 10^7 people. Its land area is about 4.05 x 10^5 km2. What was the average number of

asked by Nick on October 21, 2016
41. ## bookkeeping

what is the total interest for \$2596.40 with a interest rate of %9 percent.with a tiime of 7months 97.37 136.26 136.31 233.68 my answer is 233.68

asked by susue on April 6, 2012
42. ## Math

My work on simplifying this function: g(x)=(-3x^2-13x-13) g(x)=-3x^2-13x-13 (13x-13=x) g(x)=-3x^2-x Can someone help with the simplifying the function if I have got it wrong and also can someone tell me of it's equivalent to this

asked by Alex on January 10, 2015
43. ## pre cal

let f(x)=13x^3-13x find all x such that f(x)=0

asked by Raven on August 29, 2018
44. ## This needs tobe turned in in 10min AT MOST URGENT!

1. x over 5= –2 (1 point) –45 35 –10 21 2. 13x – 7 = 136 (1 point) 11 15 8 9 3. Solve the following equation: 3x – 3 = 15 (1 point) 4 5 6 7 4. Ernesto loses 14.5 pounds in 7 months. Now he weighs 156.5 pounds. Which equation can be used to find

asked by Gabby on December 21, 2012
45. ## math

The area of a square plot of land is 1156m2. The plot is to be fenced with three strands of wire. What is the length of the wire that is needed? Area = S2 √1156 = S S=34 P = 4s = 136 = 136(3) = 408

asked by kudu on March 17, 2015
46. ## Calculus check and help

Let f and g be the functions given by f(x)=1+sin(2x) and g(x)=e^(x/2). Let R be the shaded region in the first quadrant enclosed by the graphs of f and g. A. Find the the area of R. B. Find the value of z so that x=z cuts the solid R into two parts with

asked by Anonymous on April 19, 2015
47. ## algebra

Megan factored the expression 12x^2+13x-14 as (3x+2)(4x-7). But when Jacob applied the foil principle and multiplied out(3x+2)(4x-7), he got 12x^2-13x-14; thus, Megan's solution does not appear to check. Why is that? Please help Megan to understand this

asked by sheba on July 26, 2011
48. ## math

Josh has 42 more baseball cards than hockey cards. Josh has 136 hockey cards. Which number sentence can be used to find how many baseball cards Josh has? A. 136-42=____ B. 136+42=____

asked by Amy on April 23, 2012
49. ## math

Josh has 42 more baseball cards than hockey cards. Josh has 136 hockey cards. Which number sentence can be used to find how many baseball cards Josh has? A. 136-42=____ B. 136+42=____

asked by Amy on April 23, 2012
50. ## Algebra 2

1.) The cost in C dollars of manufacturing x bicycles at Holliday's Production Plant is given by the function C(x) = 2x2 - 800x + 92,000. Find the minimum cost. 2.) The vertex of y = -3x2- 6x - 9 lies in which quadrant? 3.) Given f(x) = 1/3*(x - 4 )2 + 7.

asked by Becka on February 27, 2014
51. ## calculus

"superman is in level flight 6 miles above ground. his flight plan takes him directly over whs high school. how fast is he flying when the distance between him and the whs high school is exactly 10 miles and the rate is increasing 40mph?" i keep getting: r

asked by eric on January 25, 2014
52. ## Maths

is this correct... (3x^2+4x-3)^2-(3x^2-x+2)^2 then is it this (9x^4+24x^3-2x^2-24x+9)-(9x^4-6x^3+13x^2-4x+4) or this 9x^4+24x^3-2x^2-24x+9-9x^4-6x^3+13x^2-4x+4 should it have brakets or not that's my only problem thanks

asked by Kane on October 4, 2010
53. ## Math

I don't think I am understanding this question. Question: A zoo started with 16 cranes and panned to hatch 20 chicks. A few birds were kept for breeding and the rest realeased into the wild. At the end of last year, a total of 136 cranes had spent some

asked by Lena on June 7, 2009
54. ## Algebra 1b!

1. Find the excluded value of x for the polynomomial expression 4x/6 a. 6 b. -6 c. 1/6 d. -1/6 2. Simplifly 3-2x/7 + 4x+5/7 a. 2x+8/14 b. 2x+8/7

asked by Selena on December 9, 2013
55. ## math

A piece of wire of length 240 cm is bent into the shape of trapezium where the eqtn is = 13x+13x+y+y+24x. Find the value of x and y for which A is maximum, hence find the maximum area. a. express y in term of x b. show that the area A cm^2 enclosed by the

asked by Yuni on July 29, 2011
56. ## Algebra

Please check my answers. Thanks! Solve the polynomial equation. In order to obtain the first root, use synthetic division to test the possible rational roots. 5.2x^3-13x^2+22x-8=0 -My answer:{1/2,2,4} 6.x^3-8x^2-x+8=0 -My answer: {1,-1,8} Find the rational

asked by Jes on October 9, 2007
57. ## Algebra

(x)/(x-3)-4-(2x-5)/(x+2) I posted something before this, so now this is how far I got. The answer I know is -(5x^2-17x-9)/(x-3)(x+2) first I get (x)(x+2)/(x-3)(x+2)- (4)(x-3)(x+2)/(x-3)(x+2)-(2x-5)(x-3)/(x-3)(x+2) Then I get x^2+2x-4x^2-4x-24-2x^2-11x+15

asked by Sara on July 20, 2007
58. ## Algebra

(x)/(x-3)-4-(2x-5)/(x+2) I posted something before this, so now this is how far I got. The answer I know is -(5x^2-17x-9)/(x-3)(x+2) first I get (x)(x+2)/(x-3)(x+2)- (4)(x-3)(x+2)/(x-3)(x+2)-(2x-5)(x-3)/(x-3)(x+2) Then I get x^2+2x-4x^2-4x-24-2x^2-11x+15

asked by Sara on July 20, 2007
59. ## Algebra

Can someone verify if my answers are correct? Solve. 1/x+6-1/x-6 My answer is: -12/x^2-36 Solve. 1/x+5+2=5/x+5 My answer is: -3 Subtract. Express your answer in simplest form. 13x/30-4x/15 My answer is: x/6 Can someone verify if my answers are correct?

asked by Need Help on July 12, 2007
60. ## Algebra

What percent of 25 is 10? A)10=x•25;40% ** B)10=x•25;250% C)25=x•10;4% D)25=x•10;250% The sales tax is 6.9% A.Find the tax paid for a pair of boots with a list price of \$128. B.What is the total cost of the pair of boots. 1)\$8.83; \$128.88 2)\$8.83;

asked by ALGEBRA HELP on November 12, 2015
61. ## *** Discrete Math ***

I would like to know if my answers are correct. I also need help solving some exercises the right way. (a) Explain why [13] is invertible in Z50. Ans: it's invertible because there's some [t]E Z50 such that [13][t]=1 (b) Use the usual algorithm to find

asked by Jane on November 23, 2007
62. ## Math help please check

Add or Subtract for #3-4 3. (2x2 + 6x + 1) + (–7x2 + 2x – 3) 5x2 – 4x – 2 –5x2 + 8x – 2 5x2 – 8x + 2 –9x2 – 8x + 2 4. (3x2 – 7x – 4) – (6x2 – 6x + 1) –3x2 – x –5 –3x2 –13x + 5 9x2 – x + 5 3x2 – 13x – 5 My answers:

asked by Delilah on May 6, 2013
63. ## Trigonometry

Stuck :( 1. Simplify (5-√-36)(2+√-1) A. 16 − 7i B. 16 + 7i C. 4 + 7i 2. Choose the point that lies on the curve r = 2 – 3 sin θ. A. (-5, 3π/3) B. (-2, π) C. (1, π/2) 3. Which of the following is not an approximate solution of x5 – 1 = 0? A.

asked by Rodrick on December 9, 2012

Find the percent of markup. Round to the nearest whole percent. 6. Store's Cost: \$136.50 Selling Price: \$184.70 (1 point) 48% 26% 14% 35%6. Store's Cost: \$136.50 Selling Price: \$184.70 (1 point) 48% 26% 14% 35% So you previously said 48% wasn't

asked by Destiny on November 28, 2012
65. ## statistics

Question: In 2001 the stock market took some big swings up and down. One thousand investors were asked how often they tracked their investments. The table below shows their responses. What is the probability that an investor tracks the portfolio monthly?

asked by Looking for someone to check my answer on March 16, 2010
66. ## Physics Energy & Acceleration

A light spring with force constant 3.45 N/m is compressed by 7.92 cm as it is held between a 0.241 kg block on the left and a 0.482 kg block on the right, both resting on a horizontal surface. The spring exerts a force on each block, tending to push them

asked by mR. Ba3BOOS on November 1, 2011
67. ## math

3x=10+13x

asked by Sophia on August 21, 2012
68. ## math

-13x = -65

asked by PPPLLLEEAASSEE HHEELLPP!!!!!! on December 4, 2018
69. ## geometry 3

x^2-13x-30=0 A. -3,-10 B. 3,10 C. -15,2 D. 15,-2 x^+7x-18=0 A. -9,2 B. -6,3 C. -3,6 D. -2,9

asked by monique n on April 14, 2010
70. ## simultaneous equation

13x+6y=41

asked by Precious on August 23, 2011
71. ## mathmetics

x2-13x+30

asked by roj on May 23, 2008
72. ## Algebra 2

2x^2-13x-7=0

asked by Jessica on June 1, 2008
73. ## college

(2x^(2)+7x-15)/(2x^(2)+13x+15)

asked by Math on August 31, 2010
74. ## statistics

y=8+13x

asked by william on July 25, 2016
75. ## algebra

13x+2>3((2x+1)-x+8

asked by lynn on August 1, 2014
76. ## algebra

13x-24

asked by Anonymous on August 25, 2011
77. ## math

Minutes 126.53 127.27 130 130.35 130.4 130.58 130.87 131.18 131.98 132.55 133.28 133.42 133.43 133.55 133.65 134 134.37 134.62 134.73 135 135.95 136.12 136.17 136.23 136.28 137.7 137.83 137.93 138.18 138.25 138.43 138.67 139.13 139.72 140.25 140.38 140.4

asked by Anonymous on February 19, 2016
78. ## statistics

Minutes 126.53 127.27 130 130.35 130.4 130.58 130.87 131.18 131.98 132.55 133.28 133.42 133.43 133.55 133.65 134 134.37 134.62 134.73 135 135.95 136.12 136.17 136.23 136.28 137.7 137.83 137.93 138.18 138.25 138.43 138.67 139.13 139.72 140.25 140.38 140.4

asked by Anonymous on February 20, 2016
79. ## statistics

Minutes 126.53 127.27 130 130.35 130.4 130.58 130.87 131.18 131.98 132.55 133.28 133.42 133.43 133.55 133.65 134 134.37 134.62 134.73 135 135.95 136.12 136.17 136.23 136.28 137.7 137.83 137.93 138.18 138.25 138.43 138.67 139.13 139.72 140.25 140.38 140.4

asked by vicke on February 21, 2016
80. ## john

Minutes 126.53 127.27 130 130.35 130.4 130.58 130.87 131.18 131.98 132.55 133.28 133.42 133.43 133.55 133.65 134 134.37 134.62 134.73 135 135.95 136.12 136.17 136.23 136.28 137.7 137.83 137.93 138.18 138.25 138.43 138.67 139.13 139.72 140.25 140.38 140.4

asked by Anonymous on February 21, 2016
81. ## statistics

Minutes 126.53 127.27 130 130.35 130.4 130.58 130.87 131.18 131.98 132.55 133.28 133.42 133.43 133.55 133.65 134 134.37 134.62 134.73 135 135.95 136.12 136.17 136.23 136.28 137.7 137.83 137.93 138.18 138.25 138.43 138.67 139.13 139.72 140.25 140.38 140.4

asked by hana on February 21, 2016
82. ## statistics

Minutes 126.53 127.27 130 130.35 130.4 130.58 130.87 131.18 131.98 132.55 133.28 133.42 133.43 133.55 133.65 134 134.37 134.62 134.73 135 135.95 136.12 136.17 136.23 136.28 137.7 137.83 137.93 138.18 138.25 138.43 138.67 139.13 139.72 140.25 140.38 140.4

asked by Anonymous on February 19, 2016
83. ## Algebra Systems with Substitution

I have a similar problem to

asked by Victim of Stupidity on January 25, 2009
84. ## algebra 2

1) 2a+c=-10 b-c=15 a-2b+c=-5 2) x+y+z=3 13x+2x=2 -x-5z=-5 3)x-y+3z=3 -2x+2y-6z=6 y-5z=-3 4)3x-2y+z=1 -x+y-z=2 5x+2y+10z=-39 5)3x-2y+z=1 -x-y-z=-3 3x-2y+3z=-12

asked by Ludjmy on November 21, 2011
85. ## math's

Solve for this 5x^3-13x^2+4x-9 ---------------- 7x^2+2x- 11

asked by rima on May 12, 2010
86. ## algebra

18x-6=13x+9

asked by Anonymous on November 27, 2013
87. ## algebra

asked by jessica on March 21, 2012
88. ## Quantitative Aptitude

6y=3=3 2y=2=2 9x=2=2 7x=2=2 5x= 12y= 13x= 6y=

asked by Riliwan on November 14, 2017
89. ## algebra

3bx+13x=9

asked by what are steps with the answer on March 24, 2011
90. ## Math

x^4 + 10x + 18 - x^4 - 3x + 2 Is this 13x + 16?

asked by Anonymous on March 5, 2014
91. ## algebra

factor: 6x^2-13x+6

asked by tam on February 11, 2011
92. ## Pre-Calculus 12

2x^3 - 13x^2 + 32x - 13 = 0

asked by Eayan on March 7, 2017
93. ## math

13x + 15= 11x - 25

asked by Sam on August 24, 2011
94. ## math

what are the roots for x^3-13x-12?

asked by Tameka on August 19, 2015
95. ## math

7x+13x=140

asked by Sumayyah on December 18, 2008
96. ## calculus

Find f'(a) for f(x)=13x/3x+1

asked by kayla on February 19, 2010
97. ## Math

Differentiate y=13x^2-5x+8

asked by Carl on July 25, 2018
98. ## Math

Find the discriminant for the quadratic equation f(x) = 5x^2 - 2x + 7 and describe the nature of the roots. discriminant is 144, one real root discriminant is -136, two complex roots

asked by Jass on February 27, 2017
99. ## linear function

solve 13x+2y=-6 in the form of f(x)=mx+b

asked by stella marie on June 29, 2011
100. ## Algebra 1

1.18x^2 + 6 + 4x - 15x^2 - 4 + 13x 2. 2x^2 + 8 - 4x + 3x - 6x^2 + 7

asked by Mr.SisterFister on May 4, 2018