# it is an equation 9b- 4b+ 3b= 16 please write it step by step

58,438 questions, page 252
1. ## Calculus

Using the definition of the derivative, find the equation of the tangent line to y=2x-1/2 at (1/2,-1) Thanks!!

asked by Sarah on February 5, 2016
2. ## MATH

Determine an equation of a sinusoidal function that has a maximum at (5, 4) and a minimum at (2, -10).

asked by ROBIN on July 15, 2013
3. ## Algebra

Find an equation of a parabola with a vertex at the origin and directrix y= -4

asked by Anonymous on December 5, 2016
4. ## PRECALC QUESTION

Solve for "x" and "y" given the following matrix equation: (2x, 0.5y, -2, 1) * (3, -2, 0, 1) = (-24, 19, -6, 5) (the matrices are going from left to right, they're all 2x2's.)

asked by Aly on May 25, 2014
5. ## maths

Find the equation of the tangent to circle x² + y² - 6x + 4y - 12 = 0 which is parallel to line 4x +3y +5

asked by nanuna on January 4, 2013
6. ## algebra

What is the equation of the line that is parallel to 8x - 5y = 2 and goes through the point (-5, -2) ? A. y = 8/5x + 6 B. y = 8/5x + 10 C. y = 8/5x - 6 D. y = 8/5x - 10 i'm guessing this would be D, or possibly B.

asked by ezra on November 13, 2013
7. ## math

solve the equation for x. 3^2x - 3^x+2 +8 =0 Ps. The topic is logarithmic and exponential functions

asked by Lindsay on May 25, 2014

Find the reactants of NaC2H3O2+H2SO4 and balance the equation

asked by vanitha on October 14, 2009
9. ## Algebra

Find an equation of a parabola with a vertex at the origin and directrix y =–4

asked by Anonymous on December 5, 2016
10. ## trig

Solve the equation. Express your answer in trigonometric form. x^5 - 11 = 0

asked by tony on June 28, 2013
11. ## calculus

DETERMINE THE EQUATION OF THE NORMAL LINE TO THE CURVE Y=2^(1/X) AT THE POINT WHERE X=1.

asked by Aliza on April 20, 2010
12. ## MATH

which equation can be used to find the measure of an angle that is supplementary to m EGB?

asked by Giana on May 2, 2015
13. ## Math

Solve the equation by first factoring the quadratic expression. 1. x2+4.5x=0 2. x2-9x=0 3. -x2+10x=0

asked by Enrique on February 23, 2013
14. ## Calculus 1

Find constants a and b in the equation f(x)= ax^b/(ln(x)) such that f(1/3)= 1 and the function has a local minimum at x= 1/3

asked by TJ on June 2, 2012
15. ## math

eight pairs of data yield the regression equation y^1=55.8+2.79x. What is the value of y for x=5.6?

asked by destiny on November 28, 2011

I NEED to give the equation 5+3/(5+3/(5+3/(5+3/(..... as an exact answer. i know it involves using x and exponents...

asked by Cody Libby on August 30, 2011
17. ## Calculus

Describe and sketch the surface in 3 dimensional R^3 represented by the equation x^2 +z^2 =9

asked by Anonymous on August 27, 2019
18. ## algebra

find the equation of the perpendicular line to y=1/2x+4 and passing through the point (1,-2) PLEASE HELP :)

asked by john on June 12, 2011
19. ## Algebra

which ordered pair in the form (x, y) is a solution of this equation? (x+6)y=9 Possible Answers: A. (12,2) B. (3,1) C. (2,1) D. (4,1)

asked by Niki on January 22, 2016
20. ## Math-Calc

Suppose that f(x)=6x(3−2x)3. f(x)=6x(3−2x)3. Find an equation for the tangent line to the graph of ff at x=1x=1.

asked by Phil on May 26, 2016
21. ## Astronomy

Does the = sign in the equation E=mc2 mean that energy and light are equivalent

asked by b on March 27, 2010
22. ## math

I have to insert brackets so that this equation is a true statement. I was able to solve the other 3 and could not get this one. Please help. Thanks -20 + 4 x 2 + 7 - 35 = -19

asked by Jay on October 29, 2012
23. ## Help me trig.

solve the equation in the interval [0,2pi) tan (t/2)-sint=0

asked by Jasmine on May 14, 2014
24. ## Math

Find the equation of normal to the curve 3x^2 - y^2 =8 which is parallel to the line x + 3y =4.

asked by Chockalingam on June 22, 2013
25. ## Algebra

Find the values of a, b, and c such that the equation y=ax^2+bx+c has ordered pair solutions (-3,-22), (-1,2) and (3,2) a = 2; b = 8; d = 4 a = -2; b = 4; c = 8 a = 2; b = 4; c = 8 a = -2; b = 8; c = 4

asked by leslie on November 23, 2014
26. ## math

find an equation of the tangent line to the graph of y=e^(2x-3) at point (3/2,1) thanks!

asked by matthias on October 31, 2012
27. ## maths

if A=(3,5) and B=(4,1).find the equation of locus of point p which are equidistant from points A and B

asked by reshma on February 16, 2013
28. ## arithmetic

Please can you tell me if the sum of this equation is correct? 19+2x5-11=18. Am I right to use BODMAS to solve it? Thanks for your help.

asked by Sam on February 5, 2010
29. ## analytic geometry

general equation of hyperbola give the easymptotes of y=2x+11 and y=2x-9 with vertex @ (-5,9)

asked by tim on May 23, 2016
30. ## Algebra

How do you find the coordinates of a vertex of a parabola using the quadratic equation?

asked by Grace on March 11, 2008
31. ## Algebra

Explain how to find ordered pairs for the line of the equation 3x-y = 9.

asked by Gregg on January 24, 2016
32. ## Maths

Find the equation of a circle which diameter has the end point A (5, 4), B (7,4 ).

asked by shredder on January 24, 2016
33. ## jake

2. Solve this equation: 80 = 3y + 2y + 4 + 1. A. y = –15 B. y = 1/5 C. y = 75 [D. y = 15] i don't realy know if that is correct because i think it could be negative like in a please let me know

asked by math on February 14, 2012
34. ## algebra

can someone plz show the steps to solving equation. i believe the answer is 36. (6^5)/(6^3)

asked by Randy on June 13, 2012
35. ## Algebra

How do I solve this multi variable equation for all the values of x and the value of r-s? 4x^2+20x+r=(2x+s)^2

asked by Rachel on August 18, 2009
36. ## Algebra

Find an equation for the line satisfying the given conditions.Through (3, 3) and parallel to 4x - 3y = 6. y=?

asked by Emily on September 18, 2012
37. ## maths

Would y=2 be the equation for the line that has the co-ordinates (0, 2) and is parallel to the x-axis? im not exactly sure, please help and explain?

asked by Michelle on August 19, 2008
38. ## Math

Find the equation of a line with slope m = -3 that passes through the point(5, -7) A.y = -3x + 22 B.y = -3x - 22 C.y = -3x + 8 D.y = -3x -8

asked by Alexis on July 7, 2010
39. ## Trig

Solev the equation for t if 0 is less than or eual to t which is less than 2 pi 7sin + radical3 = 5 sin t

asked by Selma on March 13, 2008
40. ## math

translate 112 is the product of Diane's height and 8 to an equation

asked by Anonymous on November 11, 2013

Solve for x and y where needed A.4(/x + 2)=2(/x - 3) B.[3x -6]/[2y]=4........equation one [2y+3]/=2x Keys- [numerator]/[denominator]

asked by eden on February 10, 2015
42. ## calculus

find,if any, an equation for a common tangent line to these 2 curves:5x^2;and 5x^2-x+6

asked by lam on October 12, 2010
43. ## Calculus

I am having a mental block. I have the answer to the question. It is (-‡,‡). I just need help figuring it out. The equation is: x^2+1>0

asked by Gertrude on August 31, 2011
44. ## Pre-cal

find all solutions of equation in [0, 2pi) 2 (sec x)^2 + (tan x)^2 -3 = 0

asked by Help on July 2, 2013
45. ## math

four times a number increased by 5 is 37 translate this into algebraic equation

asked by kent yrell on November 24, 2016
46. ## Math

Solve the equation. 1. 5h - 9 = -16 + 6h (1 point) A. 4 B. -7 C. 7 D. 10 I'm having trouble getting the answer, so I need help understanding.

asked by Anonymous on January 12, 2016
47. ## precalculus

(y+1)(y+3)(5y-2)=0 That is an equation. What is the question? Are you supposed to multiply it out or say what the solution values of y are?

asked by Roxanne on March 7, 2007
48. ## devry

find the point slope of an equation using the ordere pairs. (6,26) and (17,85)

asked by latifa on February 19, 2013
49. ## algebra

GRAPH EACH EQUATION AND IDENIFY THE Y-INTERCEPT 6X-3Y=9 PLEASE SHOW STEPS IF POSSIBLE.

asked by Daniel on October 13, 2010
50. ## geometry

The circle in the figure below has radius r. What is its equation in standard form?

asked by Carolyn on January 20, 2016
51. ## chemistry

What is the equation of the preparation of K3[Al(C2O4)3].3H2O using Al2(SO4)3?

asked by peter on March 24, 2010
52. ## math

solve the equation. log2(x+4)-log4x=2 please show work

asked by anonymous on January 8, 2013
53. ## Chemistry

how do i calculate the number of moles of .066g of silver? what's the equation?

asked by Cassidy on January 8, 2010
54. ## Chemistry

What is the molecular ratio in the following equation:H2O + SO3 = H2SO4

asked by Beth on November 11, 2010
55. ## Algebra HELP

how to solve this equation in the real number system: 2x^(3) + 3x^(2) + 2x + 3 = 0 steps please

asked by Amy on November 14, 2010
56. ## trig

find all soultions of the equation sec^s x-1=0 in the interval{0,2pi}

asked by Michelle on November 23, 2009
57. ## Chem(net eq'n)

What is the net equation for this formula? Fe(NO3)3 (aq) + 3KOH (aq) = Fe(OH)3 (s) + 3KNO3 (aq)

asked by Soph on September 19, 2017
58. ## Math

How do I writ a equation that involves multiplication,contains a variable and has a solution of 5. Can you please help me

59. ## AP Chemistry

What is the equation for the standard enthalpy of formation for magnesium nitrate?

asked by Andrew on November 14, 2010
60. ## algebra

solve each exponential equation. Given the value for x 8^x=1/64 3^x=6 Can someone show me how to preform these. I would greatly appreciate it Thank You

asked by Mary on May 7, 2014
61. ## math,correction,algebra

is this correct: rewrite the equation 4x-10y = 11 as a function of x. My answer: f(x) = 0.4x-1.1 ok

asked by jasmine20 on April 14, 2007
62. ## algebra ll

To solve the system of equations, which expression could be substituted for x into the first equation? 3x-5y=14 x+4y=10 a)10-4y b)4y+10 c)(1/4)x+(5/2) d)(-1/4)x+(5/2)

asked by kara on August 11, 2008
63. ## Math

Using the linear equation y = 5, answer each of the following. Choose all points that would be on this line. (0,5), (5,5), (2,5), (5,2), (-3,5), or (5,-3)

asked by Alan on November 18, 2013

In the coordinate plane below the equation of the line that passes through the points O (0,0) and A (1,n) is :

65. ## chemistry

HI(aq)+KOH(aq)→H2O(l)+KI(aq) express this as a complete ionic equation

asked by Anonymous on November 7, 2013
66. ## algebra

What is major axis for the equation 9x^2 + 16y^2 - 36x + 96y + 36 = 0

asked by hopple on March 29, 2010
67. ## calculus

An equation of the line tangent to the graph of f(x) = (4x2 - 8x + 3)4 at the point where x = 1 is:

asked by Anonymous on February 16, 2012
68. ## Math/Conics

Find the center, vertices, and foci of the ellipse with the following equation: x^2/9+y^2/16=1

asked by tori on February 23, 2012
69. ## Math

find the slope of a line that is parallel to the graph of the equation y=x+3?

asked by Anonymous on February 24, 2013
70. ## Algebra 1b

Determine the equation of g(x) that results from translating the function from f(x)=(x+2)^2 to the right 6 units

asked by Lisa on May 4, 2014
71. ## science

Name the type of reaction that the equation represents? 2Cu + O2 -------> 2CuO

asked by Natalie on February 11, 2012
72. ## math

find the genearal solution of the following equation 4csc^2x-7=cotx

asked by beracah on May 20, 2016
73. ## Calc

Consider the line passing through the points (2, 1) and (-2, 3). Find the parametric equation for y if x = t + 1.

asked by Alex on April 30, 2011
74. ## Calculus

If 2x^3 + 2xy - y^2 = 6, then approximate the equation of the tangent line at point x = 1.44

asked by Scooby10 on February 10, 2012
75. ## Differential Equations

Solve the seperable differential equation for U. du/dt = e^(5u+7t) - Using the following initial condition U(0) = 12

asked by Kody on August 27, 2011
76. ## AP Physics B

What's the equation to find the maximum height after a spring decompresses?

asked by Flower on January 30, 2011
77. ## Alg III

Solve each absolute value equation. 3 + |x| = 5 My work: 3 + x = 5 or 3 + x = -5 x = 2 or x = -8 The book says that I am wrong. I do not know why.

asked by Chopsticks on August 20, 2009
78. ## Calc 2

Consider the line passing through the points (2, 1) and (-2, 3). Find the parametric equation for y if x = t + 1.

asked by Vance on April 30, 2011
79. ## math

The function y_p(t) =ln(4 + 2 t), t > -4/2, is a particular solution to the differential equation y''+8y=g(t). Find g(t).

asked by diego on October 13, 2014
80. ## Trig

What are the focus and directrix of the parabola represented by the equation:8(y-6)=(x+2)squared?

asked by Emily on November 21, 2016
81. ## math

give five oredered pairs that make the equation true y=20+x/3

asked by jess on January 8, 2010
82. ## algebra 1

Solve the following system of linear equation using any algebraic method. 2x+5y=3 X-3y=7

asked by Janet on October 31, 2012
83. ## Engineering Maths

help solving the ffg. differential equation: dy/dx +ytanx=y^3sec^4x

asked by Taldil on February 22, 2013
84. ## Calculus

Solve the differential equation: dy/dx = (3x^2) / (y+1) with initial conditions x = -1, y = 2 I have: ∫y + 1 dy = ∫3x^2 dx (y^2 / 2) + y = x^3 + C (2^2 / 2) + (2) = (-1^3) + C? 4 = -1 + C 5 = c (y^2 / 2) + y = x^3 + 5 Is this correct?

asked by Omar on May 27, 2016
85. ## algebra 1

Solve the following system of linear equation using any algebraic method. 2x+5y=3 X-3y=7

asked by Janet on October 31, 2012
86. ## Math

Consider the line passing through the points (2, 1) and (-2, 3). Find the parametric equation for y if x = t + 1.

asked by Missy on April 30, 2011
87. ## algebra

50-word response to the following: How do you know when an equation has an infinite number of solutions?

asked by kathy on February 8, 2011
88. ## algebra 1

Solve the following system of linear equation using any algebraic method. 2x+5y=3 X-3y=7

asked by Janet on October 31, 2012
89. ## Math

Create a word problem system of equation that has an answer x=1.25 and y= 2.75.

asked by Cole on June 6, 2018
90. ## chemistry

How do you find the total number of σ and π bonds in a molecule? Is there an equation?

91. ## Calculus

Find an equation of the tangent line to the curve at the given point y^2 = x^3 (2-x) (1,1)

asked by Jeremy on February 23, 2013
92. ## algebra

Solve the quadratic equation by completing the square. -3x^2+9x=1 Not sure how to do these, if someone could expplain.

asked by Lee on October 31, 2012
93. ## math

the derections are: Add parenteses so that each equation is correct. 2squared+6-5*4=12

asked by Sara on September 7, 2011
94. ## calc

sin2x = (radical 3)/ 2 solve each equation on the interval [0,2pi)

asked by tom on September 18, 2017
95. ## statistics

eight pairs of data yield the regression equation y^1=55.8+2.79x. What is the value of y for x=5.6?

asked by destiny on November 27, 2011
96. ## Math

Solve the equation by first factoring the quadratic expression. 1. x2+4.5x=0 2. x2-9x=0 3. -x2+10x=0

asked by Enrique on February 23, 2013
97. ## alg 1

use the method of substitution to solve the system of linear equation 2x-y=5, 9x-4y=22

asked by Shannon on June 13, 2012
98. ## trig

slove the equation exactly over the interval [0, 2pi) sinx=1-2sin^2x

asked by tony on June 21, 2013
99. ## math

Find an equation of the line that satisfies the given conditions: through (2, 4), perpendicular to x − 4y + 7 = 0.

asked by Carolyn on January 27, 2016
100. ## maths

Solve this equation by completing squares and then check the solution.. x = 21/x-4

asked by Shane on May 20, 2014