# Show that the equation 3x^2 - x^3 + 3 = 0 can be rearranged to give: x = 3 + 3 ---- x^2 x^3 = Divide by ? = x = 3 + 3 ---- x^2 Using Xn+1 = 3

62,835 questions, page 310
1. ## chem

4Fe(s) + 3O2(g) → 2Fe2O3(s) Identify the type of chemical reaction represented by this equation. is it redox?

asked by Anonymous on April 21, 2009
2. ## Physics

What equation illustrates the relationship between the electric field strength and the potential difference? E = d / v E = v / d d = E(v) E = v(d) I'm honestly clueless on this one

3. ## Chemistry

Using de Broglie's equation, what is the wavelength (in meters) of an electron (mass = 9.109 x 10-31kg) moving at 5.39 x 107 m/s?

asked by tat on October 28, 2017
4. ## Chemistry

Write the chemical equation for the standard molar enthalpy of formation of periodic acid, H5IO6.

asked by Sam on October 21, 2012
5. ## math

Describe the steps to graph the direct variation equation y = – 3x. In the formula d = rt, what do each of the letters stand for and how do they relate?

asked by sakovia on November 8, 2010
6. ## financial accounting fundamentals

Johan"s plant nursery pays the salaries of it's two employees how will this transaction affect the accounting equation

asked by shirley johnson on January 22, 2016
7. ## electrical

in a simple de ciruit the voltage a cross a componet and were measured what equation can be used to determine the resistance of the componnet

asked by john on November 1, 2009
8. ## Chem

How many liters of hydrogen gas are neede to generate 90.0g of water of 25.0°C and 1 atm pressure? What is the equation I can use to figure this?

asked by Ginger on April 19, 2008
9. ## algebra 1

i know that the slop intercept form is y-y1=m(x-x1) i have to write an equation for a line that has a slope of 6 and contains the point (-8,-7) even with the formula i don't now how, HELP!!!!

asked by lisa on January 19, 2010
10. ## math

how do i define variable and write equation for... The perimeter of a square equals 4 time the length of a side?

asked by fred on July 31, 2009
11. ## nuclear physics

An atom of Radium-228 transmutes to radon-222. Write the nuclear equation for this decay.... How ??

asked by Garth on May 28, 2012
12. ## algebra

Can someon please explain why the point-slope formula cannot be used to find the equation of a line that is parallel to the y-axis. Thanks

asked by algebra need help on March 1, 2012
13. ## algebra

for a person 6 feet tall who weighs 200 pounds, find the value for k in the equation w = kh to the 3rd power

asked by Jeff on January 5, 2011
14. ## algebra

Suppose y varies directly with x. Write an equation relating x and y. 645-09-05-00-00_files/i0130000.jpg a. y = 6x c. y = 7x b. y = x d. y = − x

asked by jj on November 6, 2014
15. ## Math

Please help me solve this!! I'm really struggling with this topic Write an equation in slope intercept form that is parallel to the following two points: (-1,4) and(1,5)

asked by Hannah on November 24, 2013
16. ## Maths: Intergration

The curve with equation y = ax^2 + bx + c passes through the points P(2,6) abd Q(3,16), and has a gradient of 7 at the point P. Find the values of the constants a,b and c. Thanks!

asked by Anonymous on February 16, 2009
17. ## math

Zoe spent \$24 on some personalized mugs for her friends. Each mug cost \$6.... model this and write an equation.

asked by Seb on October 30, 2012
18. ## Math @Reiny

Write the standard form equation for the following Ellipse. Use the information given below. Foci: (0,0) and (4,0) Major Axis of length 8

asked by Lucy on May 13, 2015
19. ## calc

let v=i+j+k and w=-2i -k find the magnitude of the projection of w onto v I thought i use the equation proj w onto v= (v.w)/lvl so i got -3/sqrt3 but the answer is 1/sqrt 3

asked by rolloo on August 4, 2014
20. ## Math

By drawing suitable sketches, state the number of (i) positive, (ii) negative roots of the following equation x+1 = cos x .

asked by Anonymous on May 13, 2015
21. ## chemistry

1. based on the equation below, how many liters of water can be produced from 8.5 L (assume that hydrogen is in excess) 2H2(g)+O2(g) --->2H2O(g)

asked by holly on February 7, 2017
22. ## algebra 1

i know that the slop intercept form is y-y1=m(x-x1) i have to write an equation for a line that has a slope of 6 and contains the point (-8,-7) even with the formula i don't now how, HELP!!!!

asked by lisa on January 19, 2010
23. ## Math

Write the exponential equation in its equivalent logarithmic form. 5^4 = 625 I know I have to change it to log or ln and something is equal to I think either 4 or 5.

asked by Ms. Tracy on July 29, 2011
24. ## electrical

in a simple de ciruit the voltage a cross a componet and were measured what equation can be used to determine the resistance of the componnet

asked by john on November 1, 2009
25. ## General Chem II

When the equation Cl2 ---> Cl- + ClO3- (basic solution) is balanced using the smallest whole-number coefficients, the coefficient of OH- is??

asked by DarcY H on March 9, 2011
26. ## Math

given that the energy E,varies directly as the resistance R,as the square of the distance D, obtain an equation connecting E,R and D.E=32/25 when R=8 and D=5 calculate the value of R when E=16 and D=5

asked by Ayomide on February 21, 2019
27. ## Analytic Geometry

Find the equation of the circle incribed in a triangle, if the angle has its sides on the lines: 2x + y - 9 = 0, -2x + y - 1 = 0, and -x + 2y +7 = 0. Draw the figure.

asked by Jnr John on August 11, 2014
28. ## calculus

Find the domain for the particular solution to the differential equation dy dx equals the quotient of 3 times y and x, with initial condition y(1) = 1.

asked by Bree on May 20, 2016
29. ## college Trig

Solve this equation on the interval 0 θ < 2π. Round your answer(s) to two decimal places. 2 sin θ + 3 = 2 (smaller value) (larger value)

asked by Anonymous on February 13, 2011
30. ## Math-Logarithmic function

Find the equation of a logarithmic function whose graph has x-intercept 8, a vertical asymptote at x=0, and which passes through the point (1/2,4)

asked by Sara on February 13, 2011
31. ## Math-Logarithmic function

Find the equation of a logarithmic function whose graph has x-intercept 8, a vertical asymptote at x=0, and which passes through the point (1/2,4)

asked by Sara on February 13, 2011
32. ## Chemistry

if you have 9.50x10^25 molecules of KClO3 how many grams of KCl and O2 will you get? The balanced equation is 2KClO3 = 2KCl + 3O2

asked by Emma on April 6, 2014
33. ## college algebra

find the equation for the line with the given properties. Express in slope intercept form. Containing points P=(-3,-4) anda Q=(-1,-1)

34. ## algebra 1

i know that the slop intercept form is y-y1=m(x-x1) i have to write an equation for a line that has a slope of 6 and contains the point (-8,-7) even with the formula i don't now how, HELP!!!!

asked by lisa on January 19, 2010
35. ## algebra 1

i know that the slop intercept form is y-y1=m(x-x1) i have to write an equation for a line that has a slope of 6 and contains the point (-8,-7) even with the formula i don't now how, HELP!!!!

asked by lisa on January 19, 2010
36. ## TRIG

Solve this equation on the interval 0 θ < 2π. Round your answer(s) to two decimal places. 2 sin θ + 3 = 2 (smaller value) (larger value)

asked by Anonymous on February 13, 2011
37. ## ap chemistry

i am having trouble writing the half reactions and the balanced equation for the galvanic cell Ag(s) |AgI(s) | I−(aq) || Cl−(aq) |AgCl(s) |Ag(s)

asked by brian on October 15, 2010
38. ## algebra

B. The variables x and y vary directly. Use the values to find the constant of proportionality and write and equation that relates x and y. 1. y - 4; x = 6 2. y = 2; x = 10

asked by saralee on May 19, 2015
39. ## Math

Th equation x^3 - x^2 - 6 = 0 has one real root, denoted by a. Find by calculation the pair of consecutive integers between a lies.

asked by Zee on September 29, 2016
40. ## chem 101

using the unit conversion method derive an equation to calculate heat produced from the HCl-Na OH reaction

asked by andrew on October 26, 2010

solve algebriaclly the equation y=2sin2x+1 for 0

asked by MATHS QUESTION!!!!!!!!!!!!!!!!!!!!!!!!!! on December 6, 2009
42. ## algebra 1

Solve for the variable in the equation 3(-2-3x)=-9x-4. I'm having a hard time with this one. Whenever I check my work the numbers are close, but not correct.

asked by Toni on May 18, 2010

Write the standard form of the equation of the circle that is tangent to the line x=3 and has center at (-2,-7). Answer: (x+2)^2+(y+7)^2=49 Is this correct?

asked by Lucy on October 13, 2008
44. ## Sequences

find the nth term and write an equation to express 4,36,100,196,324 so far I've got 32(n-1) + 4 but it only works for the first two . . .

asked by Lauren on April 18, 2015
45. ## precalculus

Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. tan θ = − sqrt 3/3

asked by amaa on November 30, 2012
46. ## Maths

find the nth term and write an equation to express 4,36,100,196,324 so far I've got 32(n-1) + 4 but it only works for the first two . . .

asked by Chris on April 18, 2015
47. ## Mathematics

For the graphed function f(x) = (4)^(x - 1)+ 2, calculate the average rate of change from x = 2 to x = 4 -68 -30 68 30 Which logarithmic graph can be used to approximate the value of y in the equation 4y = 8?

asked by Stokedtobehere on May 13, 2014
48. ## Heat

Consider the following equation: CO + 2 H2 → CH3OH ΔH rxn = -128 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 8.08 g H2. How would u set that up?

asked by Chemistry on April 18, 2015
49. ## Maths

Just need a bit of help understanding what exactly i have to do here to work this out. Rearrage the following equation and hence state the gradient and the y-intercept. 2y = 8x + 10 Do i just go: y = mx + c 2y = 8x + 10 y = (8x + 10) /2 y = 4x + 5 or do i

asked by Nat on January 27, 2009
50. ## Chemistry

Please help me answer the question: What does it mean Write a net ionic equation for the reaction 2HCl + Ca(OH)2 -> CaCl2 + 2H20

asked by Brittany on November 18, 2009
51. ## chemistry

write an equation that describes the equilibrium present in a saturated solution of Cu3(PO4)2 someone please explain to me, thanks!

asked by Anonymous on December 11, 2014
52. ## Chemistry

Balance the following equation for a half reaction that occurs in acidic solution. Use e– as the symbol for an electron. Mo^3+ -> MoO2^2+

asked by Anon on December 2, 2012
53. ## Chem H

How do you write a balanced net ionic equation for the reaction Cr2(SO4)3(aq)+(NH4)2(CO3)(aq)?

asked by Sonia on December 12, 2010
54. ## Chemistry

Write the net ionic equation for the precipitation reaction between ammonium sulfide and cadmium nitrate.

asked by Kelly on June 7, 2010
55. ## Oxford, maths

Draw the graph of the linear equation whose solutions are represented by the points having the sum of the coordinates as 10 units.

asked by Dhruvraj on December 2, 2015
56. ## maths

approximate the solutions (to three decimal places) of the given equation in the interval square bracket 0, 2π) sin 2x + 1.5 cos x = 0

asked by megan on July 11, 2016
57. ## math

Seek power series solution of the given differential equation about the given point x0; find the recurrence relation. (1-x)y'' + y = 0; x0 = 0

asked by Jen on April 21, 2012
58. ## How do you

Write the standard equation for the circle center (–6, –8), that passes through (0, 0). How would someone do this? I have been looking through all my notes from class and I don't understand how to do it.

asked by Samuel on May 3, 2012
59. ## college algebra

solve the following exponential equation. 7^x=8 a. x= Write in exact solution b. then with that answer move the decimal 3 points over

asked by confused on November 27, 2012
60. ## gen chem

use the rydberg equation to calculate the wavelength in A of the photon absorbed when a hydrogen atom undergoes a transition from n=7 to n=9

asked by noel on November 26, 2014
61. ## calculus

solve the logarithmic equation. Be sure to reject any value of x that is not in the domain. In square root x+7=1 x= ? What is the decimal approximation to the solution? x= ?

asked by NayNay on January 1, 2013
62. ## calculus

solve the following exponential equation. exact answers only 1-8x 3x ¨i =e *I know that I did not post this correctly but I do not know how to put the 1-8x above the pie symbol and 3x above the e.

asked by Jennifer on December 31, 2012
63. ## trig

write an equation expressing: cos37cos99 as a sum Review question. I know the formula. Having trouble with working it out.

asked by Gaile on November 6, 2011
64. ## Chemistry

Given the balanced equation, how many milliliters of oxygen gas at STP are released from the decomposition of 5.05 g of calcium chlorate?

asked by Kalen on December 5, 2010
65. ## Chemistry

2H2S(g)+3O2(g)2SO2(g)+2H2O SO2(g)+Cl2(g)SO2Cl2(g) I balanced so how do I find the overall equation

asked by kim on April 20, 2015
66. ## Math

Let f(x) = 4√(2x^2 - 1). Write an equation of the function obtained by reflecting f(x) in the x-axis and shifting it 56 units upward, do not simplify.

asked by Anonymous on May 12, 2014
67. ## Chemistry

Using a structural formula wrute out the equation for the hydrolysis of lactose - please help! see my posting on April 2, 2007 at 5:12am

asked by Desmond on April 3, 2007
68. ## algebra

Ok so ive gotten this far on finding the points of (2004, 3370) and (2007, 3552) can someone help me find out the equation in y=mx+b form please

asked by mikey on September 21, 2008
69. ## ALGEBRA

Using x as the variable, write the equation or inequality that would correctly solve this problem. Eight times what number is greater than 72?

asked by JD JOHNSON on June 25, 2014
70. ## mathematical physics

Separate the following partial differential equation into a set of three ODEs by the method of separation of variables: d^2u/dt^2 =c^2,[d^2u/dr^2+1/r du/dr+1/r^2 d^2u/d theeta^2]

asked by gourav on March 28, 2015
71. ## Chemistry

Write the net ionic equation for the precipitation reaction between ammonium sulfide and cadmium nitrate.

asked by Kelly on June 7, 2010
72. ## Chemistry

Write the net ionic equation for the precipitation reaction between ammonium sulfide and cadmium nitrate.

asked by Kelly on June 7, 2010
73. ## statistics

Develop the estimated regression equation to predict the city score, given the Recession Resistance rating alone

asked by Jennifer on April 18, 2011
74. ## Algebra 2

what is the positive solution of the equation 1/2x^2 -3x =5? solve by using a table or by graphing. if necessary, round your answer to the nearest hundredth.

asked by Zach on December 8, 2014
75. ## Algebra 2

what is the positive solution of the equation 3x^2 - 5x - 7 =0? solve by using a table or by graphing. if necessary, round your answer to the nearest hundredth.

asked by Zach on December 8, 2014
76. ## Chemistry

When the equation for the following reaction in basic solution is balance, what is the sum of the coefficients? MnO2 + HO2^1-.....>MnO4^1- A=11 B=31 C=14 D=9

asked by Wube on April 28, 2012
77. ## math

Graph the equation y = 1 + 2 sin x. This curve crosses the x-axis in several places. Identify all the x-intercepts with 0 < x < 360.

asked by grace on March 12, 2017
78. ## Algebra 2

what is the positive solution of the equation x^2 - 3x = 1? solve by using a table or by graphing. if necessary, round your answer to the nearest hundredth.

asked by Zach on December 8, 2014
79. ## Chemistry

Enter the net ionic equation, including phases, for the reaction of AgNO3(aq) with BaO(aq). Is it... Ag+O2--->AgO?

asked by Chelsea on October 13, 2013
80. ## algebra

Determine the equation of combined variation. Then solve for the missing value. x varies directly with y and inversely with z. x = 5 when y = 10 and z = 5. Find x when y = 20 and z = 10.

asked by Anonymous on December 10, 2012
81. ## Algebra

Write the verbal statement as an equation. Then solve. 2 more than 3 times a number is 17. My answer: 5x3.4 = 17 is this correct

asked by Mike on August 30, 2016
82. ## Maths

Suppose that y varies inversely with x and that y = 2 when x = 8. What is an equation for the inverse variation? What would the answer be? What is the factored form of the expression? s^2 – 81 (s – 9)(s – 9) (s – 9)(s + 11) (s – 9)(s + 9) (s +

asked by Woody on May 23, 2014
83. ## geometry

Find the coordinates of the center and the radius of a circle with and equation of: a. x^2 + 2root7x +7 + (Y-root 11)^2 =11 b. x^2 -12x + 84 =-y^2 + 16y

asked by lindsay on April 29, 2012
84. ## Math

Identify th equation of the parabola whose focus is at (5,-1) and whose directrix is x=3 I don't see any examples of this kind of problem. is this right? (x-5)^2+(y+1)^2=(x-3)^2 so -10x+25+y^2+2y+1=-6x+9 4x=y^2+2y+17

asked by Anonymous on September 30, 2008
85. ## Algebra

How do you solve an equation with a fraction like x^(2/3) +13=17. I don't think the quadratic formula would work for this method, and neither would completing the square. What should I do?

asked by Leyla on November 23, 2009
86. ## Math

Identify th equation of the parabola whose focus is at (5,-1) and whose directrix is x=3 I don't see any examples of this kind of problem. is this right? (x-5)^2+(y+1)^2=(x-3)^2 so -10x+25+y^2+2y+1=-6x+9 4x=y^2+2y+17

asked by Anonymous on September 30, 2008
87. ## math

Write the equation which describes the average price of a 19 inch TV if the cost in 2000 was \$224 and has gone down \$7 per year following.

asked by m on July 28, 2016
88. ## Math

let OA,OB,OC be 3 mutually perpendicular lines through the origin whose direction cosines are,,.if OA=OB=OC=a find equation of plane ABC

asked by Manmohan Kaur on April 30, 2018
89. ## algebra

For the equation 9x + 15y = 4(2x - 7), the y-intercept is at the coordinate (0,y). What is the value of y? Type in your answer as a decimal rounded to the nearest hundredth.

asked by Kelsay on August 29, 2011
90. ## Algebra 2

Whar number must be added to both sides of the equation to solve it by completeing the square? 3x^2+15x=9 (1)225 (2)25 (3)6.25 (4)5

asked by Callie on May 30, 2011
91. ## algebra

48 equals a number increased by 6, and the sum, all multiplied by 5. need help converting this word problem to an equation and solving.

asked by Rose on October 8, 2008
92. ## calc 1

fine the slope intercept equation of the tangent line to the curve by the relation 5x^3+10y^2=8x^5+2y at points (1,1)

asked by Sam on June 11, 2014
93. ## Algebra 2

Make predictions about how many times the graph of each equation below will touch the x axis. You may first want to rewrite some of the equations in a more useful form.=(x-2)(x-3). A. y=(x+1)^2 B. y=x^2+6x+9 C. y=x^2+7x+10 D. y=x^2+6x+8 E. y=-x^2-4x-4

asked by Jj on November 24, 2015
94. ## Algebra 2

Find the vertex of each of the following parabolas by averaging the x intercepts. Then write each equation in graphing form. Y=x^2-14x+40

asked by Sam on November 24, 2015
95. ## calculus

Find an equation for the surface consisting of all points P(x, y, z) equidistant from the point P(0, 1, 0) and the plane x = 3. Answer Choices: 1. y2 + z2 − 6x + 2y − 8 = 0 2. x2 + z2 + 6y − 2z − 8 = 0 3. y2 + z2 + 6x − 2y − 8 = 0 4. x2 + z2

asked by Bob on October 27, 2010
96. ## Physics

What is the repulsive electrical force between two protons in a nucleus that are 5 x 10^ -15 m apart from each other? Could you help me with this problem? I can't figure out how to do this. Use Coulomb's equation F= kQQ/r^2

asked by Nat on February 22, 2007
97. ## chem

What mass of lithium (in g) is required to react completely with 59.1 mL of gas at STP? given the equation 6Li+N2=2Li3

asked by Anonymous on June 12, 2009
98. ## algebra

can you help me find the roots of the polynominal of 5x^2 -x.... I also need help in finding the factorization of x^2 - 15x + 56 help in solving the the equation x^2 + 30x = 1000....thank you

asked by fishboy on May 26, 2009
99. ## newton's method #2

i want to verify that when newton's method is used to compute sqrt(R) (by solving the equation x^2=R), the sequence o iterates is defined by x_(n+1)=.5(x_(n) + (R/x_(n))

asked by Julie on September 28, 2008
100. ## math

What is the equation for terms 1 2 3 4 5 6 499 498 497 496 495 494 and what is the 40th term?

asked by Noah on October 7, 2008