# if x =3 and y = -4, find the value of 8x -10y I will be happy to critique your work/ or thinking on this

87,272 questions
1. ## Math

Combine the following rational expressions 1/2y-5-30/8y^3-125 Lcm:(2y-5)(4y^2+10y+125) =1*4y^2+10y+25/(2y-5)(4y^2+10y+25)-30/(2y-5)(4y^2+10y+25) =4y^2-10y+25-30/(2y-5)(4y^2+10y+25) =(4y^2+10y-5)/(2y-5)(4y^2+10y+25) Please correct my answer and I know it is

asked by Keonn'a on November 6, 2018
2. ## math help

5x+10y +15z-15x+10y-5z+5x-10y-5z / (5x+10y+15z)-(15x+10y-5z)+(5x-10y-5z) a. 1/3 b. 1 c. x+2y+z / x-2y+3z d. x-2y-z / x+2y-3z e. x-2y-z / x+2y+z my answer is none of above, is - 1/3, I didn't know I done it wrong or the question is not correct

asked by Tomas on September 29, 2013
3. ## algebra

What is the equation of the given line in standard form? Use integer coefficients. y = -6.9x + 5.1 A. -69x + 10y = -51 B. 69x + 10y = 51 C. 69x + 10y = -51 D. -69x + 10y = 51 how would I solve it steph by step? I think the answer is C.

asked by Alexa on January 29, 2016
4. ## Algebra 2

"My husband's age," remarked a lady the other day, "is represented by the figures of my own age reversed. He is my senior, and the difference between our ages is one-eleventh of their sum." 10x + y = husband's age 10y + x = wife's age (10x+y) - (10y+x) =

asked by Anonymous on October 25, 2011
5. ## Algebra

1.Mary is selling her craft to earn money she sells her bracelets for \$6 and her necklaces for \$10 her goal is to make at least \$120 in sales which of the following represents three possible solutions to the problem A.6x+10y=120 (5,9),(10,6),and(15,3)are

asked by GummyBears on December 10, 2015
6. ## Algebra

1.Mary is selling her craft to earn money she sells her bracelets for \$6 and her necklaces for \$10 her goal is to make at least \$120 in sales which of the following represents three possible solutions to the problem A.6x+10y=120 (5,9),(10,6),and(15,3)are

asked by GummyBears on December 10, 2015
7. ## algebra

How do I solve this with the elimination method? 5x-10y=4 5x-10y=5 I need x=, and y= to get an ordered pair, but every time I mult. by a neg, everything goes away instead of just one variable! please help!

asked by bob on March 21, 2010
8. ## Math

Mary is selling her craft to earn money she sells her bracelets for \$6 and her necklaces for \$10 her goal is to make at least \$120 in sales which of the following represents three possible solutions to the problem a. 6x+10y=120 (5,9),(10,6),and(15,3)are

asked by Kaai97 on January 19, 2016
9. ## Algebra

Use the properties of logarithms to expand the expression. ln y(y+1)^5, I keep coming up with the same answer which is wrong. y^5ln(y)+5y^4ln(y)+10y^3ln(y)+10y^2ln(y)+ln(y)

asked by Lins on July 9, 2016
10. ## math (last question #5) @Damon

5. (2y – 1)(4y – 3) (1 point) –2y + 3 8y^2 – 10y – 3 8y^2 – 10y + 3 8y^2 – 2y + 3 i did the rest (#1 and #3) but im stuck on #5, can u help Damon? thanx

asked by zumai on May 21, 2014
11. ## math

Find: Two numbers whose sum -10 and whose product is 5. ;;; x+y = -10 x= -10-y xy=5 (-10-y)y=5 -10y-y^2 = 5 -y^2-10y-5=0 y= -9.47213595499958 and y= -0.52786404500042 Two numbers whose sum is 1 and whose product is 1. ;;; y= (-1+ sqrt(-3))/-2 y= (-1 -

asked by John on February 1, 2016
12. ## algebra

Did I do this problem right? (2y+5w+6)(5y+5w-4) 2y(5y)+ 2y(5w) + 2y(-4) + 5w(5y) + 5w(5w)+ 5w(-4) + 6(5y) + 6(5w) + 6(-4) then I multiplied: 10y^2 + 10wy - 8y + 25wy + 25w^2 - 20w + 30y + 30w - 24 then I combined like terms: 10y^2 + 15wy + 25w^2 + 22y +

asked by kevin on February 16, 2009
13. ## math

7 – 4(x + y) + 2(x – 3y) A 7 – 2x – 7y B.7 – 2x – 10y(*) C.7 + 2x – 7y d.7 + 2x – 10y i think its be im not aure can some one check my ansswer

asked by sam on October 17, 2012
14. ## Algebra

Select the set of equations that represents the following situation: Mike invested \$434 for one year.He invested part of it at 9% and the rest at 10%.At the end of the tear he earned \$40.16 in interest.How much did Mike invest at each rate of interest.?

asked by sherry on March 22, 2012
15. ## Math

Use the initial condition y(0)=4 and step size h=.25, calculate the backward Euler on [0,1] for the ODE y'=10y-10y^2. Solve the ODE exactly and compute the errors at t=1.

asked by Ashley on March 25, 2015
16. ## maths

decide whether the graphs of the two equations are parallel lines: 1. 2x+3y=5 9y+6x-1=0 answer: yes 2. 15+3x-10y=0 30x+24=10y answer: yes please check if this is right. thanks

asked by emma green on October 8, 2009

1. (3x + 4)(x – 2) A)3x^2 – 2x – 8 B)x – 8 C)3x – 2x – 8 *** D)3x^2 + 2x + 8 2. (2y – 1)(4y – 3) (1 point) A)–2y + 3 B)8y^2 – 10y – 3 *** C)8y^2 – 10y + 3 D)8y^2 – 2y + 3 Am I correct?

asked by Rock on! on April 6, 2016
18. ## Math

1. Write an equation in point-slope form for the line through the given point with the given slope. (-10,-6);m=-5/8 A. y-6=-5/8(x-10) B. y-6=-5/8(x+10) C. y+6=-5/8(x+10) D. y+10=-5/8(x+6) 2. The table below shows the height of a plant as it grows. Which

asked by Cami on January 12, 2016
19. ## Algebra

1. Write an equation in point-slope form for the line through the given point with the given slope. (-10,-6);m=-5/8 A. y-6=-5/8(x-10) B. y-6=-5/8(x+10) C. y+6=-5/8(x+10) D. y+10=-5/8(x+6) 2. The table below shows the height of a plant as it grows. Which

asked by Cami on January 12, 2016
20. ## Math inequalitites

Hi, I need some help with some inequalitites. Thanks!! Use graphs to find the set. 1.(-9,0) intersection [-4,] I got [-4,0) 2. (-9,0) U [-4,10] I got (-9,10] Solve the linear inequality. Other than (empty set, use interval notation to express the solution

asked by Christie on August 18, 2007

A lawn care company charges a \$10 trip fee plus \$0.15 per square foot of x square feet of lawn for fertilization. Which equation represents the relationship? a. x= 0.10y+15 b. y= 0.15x+10 c. y= 10x+0.15 c. x= 10y+0.15 *

asked by karly on October 29, 2014
22. ## Linear algebra

How can you by using a matrix, find the optimal strategies for each player in the prisoner dilemma, and calculate the odds of them choosing that option? ╔══════╦═══════╦══════╗ ║ ║ Confess ║ Deny ║

asked by Nils on May 18, 2019
23. ## MATH!!!!ASAP!!!

I'm confused with transitive property, substitution postulate, addition postulate, and subtraction postulate. What are they? and What are the differences between them? go to goole i mean google http://library.thinkquest.org/2647/algebra/post.htm fcpaljbk

asked by Katrina on February 12, 2007
24. ## college algebra

10x+10y+20=1850 20x+20y+10z=2200 20x+10y+10z=1500

asked by Anonymous on November 28, 2017
25. ## Algebra

Solve the system 9x-5y=119 18x-10y=238 Double both sides of the first equation and you have 18x-10y =238 which is the same as the second equation. Since the two equations are not independent, there are no unique solutions. Thee are an infinite number of

asked by Tabby on December 14, 2006
26. ## math

Find the product 1. (2x)(10x) (1 point) 20x 12x 20x^2 5x 2. –3m(m + 8) (1 point) –3m2 + 24 –3m2 – 24m –24m^2 –4m + 5 3. 4d(2d – 9) (1 point) 8d – 36d –d –28d^2 8d^2 – 36d 4. (3x + 4)(x – 2) (1 point) 3x^2 – 2x – 8 x – 8 3x –

asked by zumai on May 21, 2014
27. ## math

(5 + x2)y'' − xy' + 10y = 0, x0 = 0 Find the first four terms in each of two solutions y1 and y2

asked by hi on September 3, 2015
28. ## math

Find x-intercept for the line 9x+10y+16=0

asked by Jenn on August 31, 2009
29. ## Math check

1.(2x)(10x) A)20x* B)12x C)20x^2 D)5x 2.-3m(m + 8) A)-3m^2 + 24 B)-3m^2 - 24m C)-24m D)-4m + 5* 3. 4d(2d-9) A)8d - 36d* B)-d C)-28d^2 D)8d^2 - 36d 4. (3x + 4)(x-2) A)3x^2 - 2x - 8 B)x - 8 C)3x - 2x - 8* D)3x^2 + 2x + 8 5. (2y - 1)(4y - 3) A)-2y + 3* B)8y^2

asked by Oscar on March 21, 2015
30. ## Algebra2

Find the center and radius of the given circle. 1. x^2 + y^2 + 10y + 21 = 0

asked by Ana on November 28, 2012
31. ## Algebra

0.50x+ 10y+5z equals to hundred find x,y,z

asked by Mallikarjuna y k on April 26, 2019
32. ## math

if x =3 and y = -4, find the value of 8x -10y I will be happy to critique your work/ or thinking on this.

asked by larry on June 18, 2007
33. ## Algebra2

Check? Find the center and radius of the given circle 1. x^2+y^2+10y+21=0 = 5

asked by Nessa on November 29, 2012
34. ## beginning algebra

find 3 ordered pairs the satisfy the equation 2x + 10y = 25

asked by margie on October 19, 2016
35. ## algebra

Find an equivalent expression without parenthesis -(26x-10y+75)

asked by Anonymous on October 17, 2013
36. ## math

Find the ordered pair using the elimination method. 4x+5y=3 8x+10y=6

asked by Scott on March 21, 2010
37. ## Algebra2

Find the center and radius of the given circle and graph it. 1. x^2+y^2+10y+21=0

asked by Victoria on October 11, 2012
38. ## Calculus II

find the distance between the given parallel planes 5x-5y+z=10 and 10x-10y+2z=2. I got 9sqrt51/51

asked by Mitch on September 11, 2014
39. ## physics

if V = (10x-10y)i + 30k find pressure change between points (0,0,0) and (3,1,0)

asked by Anonymous on April 16, 2011
40. ## MATH

find the coordinate of the center and identify the conic: 5y^2 - 2x^2 - 10y - 12x = 23

asked by Katie on September 26, 2011
41. ## math

if V = (10x-10y)i + 30k find pressure change between points (0,0,0) and (3,1,0)

asked by Anonymous on April 16, 2011
42. ## Implicit Functions

Find the slope of the tangent to the curve at the point specified. x^3+5x^2y+2y^2=4y+11 at (1,2) So far I simplified it to -(3x^2-10y/5x^2+4y-4) which I think then simplifies to -(8/3). What do I do from here....?

asked by George on November 7, 2008
43. ## math

The following simultaneous equations are given in base two 11x + 10y = 1100 101x - y =111 Find the value of x and y

asked by wesley on April 16, 2018
44. ## math

Find the general solution using the method of undetermined coefficients. y''' - 10y'' + 25y' = e^(-x) cos x + e^(5x) + x.

asked by Shane on May 8, 2011
45. ## Math

Find the standard equation of the circle concentric with x^2+y^2-12x-10y = -12 and has a diameter of 10. I have been trying to solve this all day, can you please help me :(

asked by Joshua on June 27, 2016

1 )3x + 8y = 1 7x + 4y = 17 Answer: (3,1) 2) -3x + 5y = -7 9x + 2y = 38 Answer: (4,1) 3) 7r + 3s = 13 14r - 15s = -16 Answer: (1,2) 4) 2x - 7y = 42 4x - 14y = 64 Answer: No Solution ?? 5) 9x + 12y = 15 3x + 4y = 5 Answer: Identity ?? 6) 2 = 4s - 3t 2 = 12s

asked by Veronica on February 25, 2009
47. ## math help, correction

Anna has 12 bills in her wallet, some \$5 and some \$10. The total value of the bills is \$100. HOw many of each bill odes Anna have? How do i solve these type of problems my quess was this but i don't know if i'm correct. 5(x) + 10(y) = 100 5(0) + 10y = 100

asked by jasmine20 on January 11, 2007

1.-3f^2+4f-3+8f^2+7f+1 a.5f^2-11f+2 b.11f^2+11f+2*** c.5f^2+11f-2 d.-5f+3f-2 2.3x^2+5X-5X^2-4X-2 a.-8x^2-9x+3 b.2x^2+x+3 c.-2x^2-9x+3 d.-2x^2+x+3*** 3.(8x-2y)+(3x-4y) a.11x+8y*** b.4x-y c.11x-6y d.5x+2y 4.(y+3d)-(-9y+7d) a.-10y+4d b.-8y+10d c.8y-6d***

asked by Connexus on May 10, 2016

1.-3f^2+4f-3+8f^2+7f+1 a.5f^2-11f+2 b.11f^2+11f+2*** c.5f^2+11f-2 d.-5f+3f-2 2.3x^2+5X-5X^2-4X-2 a.-8x^2-9x+3 b.2x^2+x+3 c.-2x^2-9x+3 d.-2x^2+x+3*** 3.(8x-2y)+(3x-4y) a.11x+8y*** b.4x-y c.11x-6y d.5x+2y 4.(y+3d)-(-9y+7d) a.-10y+4d b.-8y+10d c.8y-6d***

asked by Connexus on May 6, 2016
50. ## algebra PLZ HELP!!!

y= 9/11x-17 9x-10y=179 You need to use parentheses to tell us what the problem is. Is equation 1, y = 9/(11x-17) or is it y = (9/11)x - 17? y= 9/11x-17 9x-10y=179 Rewrite them as 11 y - 9 x = -187 and -10 y + 9x = 179 Add the last two and you get y = -8

asked by andrea on February 23, 2007
51. ## Pre-Calculus

Sorry to be a pest but I never got an answer and I'm really stuck Can you please check this equation. Find polar equation of x^2 + y^2 = 10y x^2 + y^2 = r^2 r^2 = 10sin(theta)

asked by Tonya on October 7, 2011
52. ## math

Find an equation of the line (in slope-intercept form) that passes through the point (7,5) and is perpendicular to the line 7x + 10y - 17 = 0 y=?

asked by joy on February 8, 2013
53. ## math

Find an equation of the line (in slope-intercept form) that passes through the point (7,5) and is perpendicular to the line 7x + 10y - 17 = 0 y=?

asked by ashley on February 8, 2013
54. ## algerbra

find the constant of variation for each direct variation. 10y=13x and f(x)=4.5x and x+y=0

asked by dan on November 26, 2007
55. ## algabra

find the constant of variation for each direct variation. 10y=13x and f(x)=4.5x and x+y=0

asked by michael on November 27, 2007
56. ## Math

Find the intersection point. 3x+2y = 3 2x+10y = -5 I put them into y=mx+b form and got y=-3/2 + 3/2 y=1/5x - 1/2 I can't seem to find the intersection point by graphing it either, since it won't be accurate.

asked by Vanessa on September 8, 2012

Solve each system of equations, give the solution and state whether there are no solutions or many solutions. 1 )3x + 8y = 1 7x + 4y = 17 Answer: (3,1) 2) -3x + 5y = -7 9x + 2y = 38 Answer: (4,1) 3) 7r + 3s = 13 14r - 15s = -16 Answer: (1,2) 4) 2x - 7y =

asked by Lily on February 25, 2009
58. ## Math

HELP Find the solution for x,y. In the problem... 5x-3y=-11 x-2y=2 Multiply the second equaton by five. 5x-3y=-11 5x-10y=10 subtract the second equation from the first. 7y=-21 solve for y, then put y into either of the beginning equations to solve for x.

59. ## Calculus

Find the point on the plane z = 8x + 10y + 1 closest to the point P=(1, 0, 0).

asked by EKM on November 5, 2018
60. ## maths

A CIRCLE HAS EQUATION X^2 +4X + 10Y -8 =0,FIND THE EQUATION OF THE TANGENT AT (3,1)

asked by victor.m on February 14, 2012

2. –3m(m + 8) –3m^2 + 24 –3m^2 – 24m –24m^2 –4m + 5 4. (3x + 4)(x – 2) 3x^2 – 2x – 8 x – 8 3x – 2x – 8 3x^2 + 2x + 8 5. (2y – 1)(4y – 3) –2y + 3 8y^2 – 10y – 3 8y^2 – 10y + 3 8y^2 – 2y + 3 My answers: 2. –3m^2 –

asked by Delilah on May 7, 2013
62. ## Math

-3(×-5y)+1÷2 (4×-10y)

asked by Norazizah on December 12, 2016
63. ## algebra

3x + 4y = -14 3x − 10y = 14

asked by josh on June 12, 2019
64. ## algebra

10y-6=12

asked by Mrs. Cash on May 27, 2013
65. ## math

(y^-5)^-10y^10

asked by bob on March 3, 2019
66. ## algebra

4x+10y=28 6x+7y=6

asked by rainee on June 4, 2012
67. ## algebra

2x+10y=92, -6x-2y=-24

asked by Anonymous on August 30, 2011
68. ## algebra

1.) (3x + 4)(x - 2) a.) 3x^2 - 2x - 8 b.) x - 8 c.) 3x^2 + 2x +8 d.) 3x^2 + 2x +8 2.) (2y - 1)(4y - 3) a.) -2y + 3 b.) 8y^2 -10y - 3 c.) 8y^2 -10y + 3 d.) 8y^2 - 2y + 3

asked by Anonymous on June 20, 2015
69. ## Algebra II

2y^11/3+8y^8/3-10y^5/3=0

asked by Jeannie on February 24, 2013
70. ## Pre-Algebra

Can I have some help please. 4. (3x+4)(x - 2) A. 3x^2-2x-8 B. x-8 C. 3x-2x-8 D. 3x^2+2x+8 5. (2y-1)(4y-3) A. -2y+3 B. 8y^2-10y-3 C. 8y^2-10y+3 D. 8y^2-2y+3

asked by Cammie on May 14, 2018
71. ## Algebra II

2y^11/3+8y^8/3-10y^5/3=0

asked by Jeannie on February 25, 2013
72. ## math

4x+5y=5 8x+10y=10

asked by Anonymous on February 21, 2010
73. ## algebra

9/10Y = 36 What is Y

asked by tom on October 6, 2011
74. ## Math

0.05x +0.10y=1.30 x+y=19

asked by Andrea B on June 18, 2012
75. ## Algebra

y^4-10y^3+21y^2

asked by LaShawn on February 4, 2013
76. ## algebra

10y^3+y^2-21y

asked by Kong on October 7, 2012
77. ## Algebra

[2y^2+11y+5]/[4y^2+4y+1] / [2y^3+10y^2]/[4y^3] =2y over (2y+1), right?

asked by Anonymous on September 24, 2009
78. ## math

If x = 8 and y = 6 then what is 11x + 10y

asked by jamie on March 28, 2019
79. ## Algebra

16x-10y=10 -8x-6y=6

asked by Nastahcia on January 6, 2016
80. ## Math

0.05x+0.10y=1.30 x+y=19

asked by Jullian B. on June 15, 2012
81. ## algebra

10y^3+y^2-21y

asked by Kong on October 7, 2012
82. ## Math

asked by RoTianna on January 12, 2016
83. ## Math

asked by Cherie on November 24, 2014
84. ## math

1/3y-9=1/10y solve for y.

asked by kelly on February 21, 2013
85. ## Substituion MATH

1) -x+10y=60 -4x+16y=32 2) -1/2x - 1/4y=3 1/3x+1/6y=2

asked by andra on October 31, 2013
86. ## math 116 week 7

-7x+4y>+=-28 and 2x+10y> 20 intersect

asked by Darlene on August 24, 2014
87. ## algebra

Solve: 7y-10y>-10

88. ## Algebra 1

Substitution x - 5y=10 2x - 10y=20

asked by Kalleigh on June 26, 2011
89. ## math

subtract. 5y^2+2y-9 from 10y^2+3y+5

asked by shawn on August 24, 2008
90. ## Math

5x + 10 =10y solve for y does y= 5x/10 + 1

asked by Plz Help on February 10, 2011
91. ## ecuaciones diferenciales

Y'''+10y''+25y'=e^x

asked by juan on August 18, 2016
92. ## algebra - Am i doing this right?

5y^3(y^5)2 _______________ 10y^5(y^2)^6 5y^3 * y^10 _______________ 10y^5* y^12 5y^30 _______________ 10y^19

asked by Shawn H. on September 17, 2007
93. ## math

Find the maximum and minimum of f(x; y) = 7x - 10y subject to the constraint x2 + 4y2 = 136. can someone tell me the final answer because my final answer has a lot of decimal point. Is it relevant?

asked by ifi on May 13, 2013
94. ## Algebra

Find all solutions to the following system of equations: x + 3y + 2z = 6 -3x + y + 5z = 29 -2x - 3y + z = 14 This just did not work out for me. Here is my work: I first solved Equation #1 for x. x = -3y - 2z + 6 Then, I did substitution, and replaced x for

asked by Anneliese on February 25, 2009
95. ## math

write a matrix for x-y=8,-2x-5y-6z=-27, 9x+10y-z=54

asked by megan on November 2, 2011
96. ## algebra

-5+10y=neg30 what is the anser?

asked by t.j on September 20, 2010

Factor y2 + 10z - 10y - yz.

asked by mina on March 18, 2010
98. ## algebra 1

completely factor: 10y^2 -90

asked by tyyyyyy on June 5, 2011
99. ## math

how do u solve this problem -2x+7y=6 2x+10y=-6

asked by israel on May 27, 2009
100. ## Mathematics

expand 5(x+3) Factor 6x-10y

asked by Rose on October 5, 2017