Tuesday

December 1, 2015
Total # Posts: 1,998

**Algebra: Help Please**

x = - 1 8 ^ - 1 = 1 / 8 x = - 2 8 ^ - 2 = 1 / 8 ^ 2 = 1 / 64 x = - 3 8 ^ - 3 = 1 / 8 ^ 3 = 1 / 512
*February 23, 2012*

**Algebra: Help Please**

f ( x ) = 8 ^ x x = 0 8 ^ 0 = 1 x = 1 8 ^ 1 = 8 x = 2 8 ^ 2 = 64 x = 3 8 ^ 3 = 512
*February 23, 2012*

**Math**

( - 2 q ^ 2 + q + 3 ) - 5 ( q ^ 2 + 2 q - 1 ) = - 7 q ^ 2 - 9 q + 8
*February 22, 2012*

**Math**

a ) ( 4 d - 6 )( - 3 d ) = 4 d * ( - 3 d ) - 6 * ( - 3 d ) = - 12 d ^ 2 + 18 d b ) 5 g ( g ^ 2 - 2 g + 1 ) = 5 g * g ^ 2 - 5 g * 2 g + 5 g * 1 = 5 g ^ 3 - 10 g ^ 2 + 5 g c ) ( - 2 q ^ 2 + q + 3 ) - 5 ( q ^ 2 + 2 q - 1 ) = - 2 q ^ 2 + q + 3 - 5 q ^ 2 - 10 q + 5 = - 2 q ^ 2 - 5 ...
*February 22, 2012*

**pre-cal**

log ( a ^ n ) = n * log ( a ) ( 2 x - 1 ) * log ( 4 ) = log ( 6 ) Divide both sides by log ( 4 ) 2 x - 1 = log ( 6 ) / log ( 4 ) 2 x = log ( 6 ) / log ( 4 ) + 1 2 x = log ( 6 ) / log ( 4 ) + log ( 4 ) / log ( 4 ) 2 x = [ log ( 6 ) + log ( 4 ) ] / log 4 2 x = log ( 24 ) / log...
*February 19, 2012*

**arithmetic**

6 ( x - 6 ) + 2 = 8 ( x + 2 ) - 8 6 * x + 6 * ( - 6 ) + 2 = 8 * x + 8 * 2 - 8 6 x - 36 + 2 = 8 x + 16 - 8 6 x - 34 = 8 x + 8 6 x - 8 x = 8 + 34 - 2 x = 42 Divide both sides by - 2 x = 42 / ( - 2 ) x = - 21
*February 19, 2012*

**math**

In google type : csc20° − cot 40° When you see list of result click on : What is csc(20) - cot(40)? or csc(pi/9) - cot(2pi/9) You will see solution step by step.
*February 16, 2012*

**math**

8 / 12 = 4 * 2 / (4 * 3 ) = 2 / 3 hours / lawnmower 30 * 2 / 3 = 60 / 3 = 20 hours OR 8 / 12 = x / 30 8 * 30 = 12 * x 240 = 12 x Divide both sides by 12 240 / 12 = x 20 = x x = 20 hours OR 30 / 12 = 2.5 2.5 * 8 = 20 hours
*February 15, 2012*

**Math**

3 k / 4 - 28 - 2 k / 3 = 37 Multiply both sides by 4 ( 3 k / 4 ) * 4 - 28 * 4 - 2 k * 4 / 3 = 37 * 4 3 k - 112 - 8 k / 3 = 148 Multiply both sides by 3 3 k * 3 - 112 * 3 - ( 8 k / 3 ) * 3 = 148 * 3 9 k - 336 - 8 k = 444 9 k - 8 k = 444 + 336 k = 780
*February 15, 2012*

**quadratic equation**

If your expressions mean : x ^ 2 - 9 x = 0 x ^ 2 +8 x = 0 x ^ 2 = 6 x x ^ 2 = - 3 x Then in google type: quadratic equation online When you see list of results click on: Free Online Quadratic Equation Solver:Solve by Quadratic Formula When page be open in rectangle type your ...
*February 15, 2012*

**Algebra 2**

The term b ^ 2 - 4 a c is called the discriminant and gives important information about the number and nature of the solutions to the quadratic equation to be solved. Three cases are possible: If D > 0, the equation has 2 real solutions. If D = 0, the equation has 1 real ...
*February 15, 2012*

**algebra**

w = the number of WHITE ribbions
*February 14, 2012*

**algebra**

b = the number of blue ribbions w = the number of blue ribbions r = the number of red ribbions b = w - 2 r = w + 3 w + b + r = 43 w + w - 2 + w + 3 = 43 3 w - 2 + 3 = 43 3 w + 1 = 43 3 w = 43 - 1 3 w = 42 Divide both sides by 3 w = 42 / 3 w = 14 b = w - 2 = 14 - 2 = 12 r = w...
*February 14, 2012*

**Algebra**

a = age of the twins b = age of the third child b = a - 3 a + a + b = 42 2 a + b = 42 2 a + a - 3 = 42 3 a - 3 = 42 3 a = 42 + 3 3 a = 45 Divide both sides by 3 a = 45 / 3 a = 15 b = 15 - 3 b = 12
*February 14, 2012*

**math**

x = The number of sweets in container x y = The number of sweets in Container y x = 24 + y OR y = x - 24 When you removed 42 sweets from container x then numers of sweets in container x became: x - 42 Numbers of sweets in container y became: y + 42 = thrice of ( x - 42 ) = 3...
*February 13, 2012*

**Math**

4 / 5 - 2 p / 5 = 6 / 5 Multiply both sides by 5 4 - 2 p = 6 - 2 p = 6 - 4 - 2 p = 2 Divide both sides by -2 p = 2 / ( - 2 ) p = - 1
*February 11, 2012*

**Math**

a x ^ 2 + b x + c = 0
*February 11, 2012*

**Math**

My answer is also numbers of girls g = 25
*February 11, 2012*

**Math**

b = numbers of boys g = numbers of girls Ratio of boys to girls: b / g = 3 / 5 Multiply both sides by 5 5 b / g = 3 Multiply both sides by g 5 b = 3 g Divide both sides by 5 b = 3 g / 5 After adding ratio is : ( b + 5 ) / ( g + 3 ) = 5 / 7 [ ( 3 g / 5 ) + 5 ] / ( g + 3 ) = 5...
*February 11, 2012*

**trig**

In google type: functions graphs online When you see list of results click on: rechneronline.de/function-graphs/ When page be open in blue rectangle type: 1/2cos(x) And click option: Draw then type : 2cos(x)+1 OR 2cos (x+1) And click option: Draw etc. You must write correct ...
*February 10, 2012*

**math for elementry school teacher**

x =original number Mathematical operations: Add 10 : x + 10 Multiply the result by 4 : ( x + 10 ) * 4 Add 200 : ( x + 10 ) * 4 + 200 Divide by 4 : [ ( x + 10 ) * 4 + 200 ] / 4 Subtract your original number : [ ( ( x + 10 ) * 4 + 200 ) / 4] - x Equation is: [ ( ( x + 10 ) * 4...
*February 9, 2012*

**Trig**

pi < x < 3 pi / 2 180 ° < x < 270 ° That is Quadran III In Quadran III cosine are negative. cos ( x ) = + OR - 1 /sqrt [ 1 + tan( x ) ^ 2 ] In this case : cos ( x ) = - 1 / sqrt [ 1 + tan( x ) ^ 2 ] cos ( x ) = - 1 / sqrt [ 1 + ( 9 / 4 ) ^ 2 ] cos ( x...
*February 8, 2012*

**Math**

A perfect square is any rational number that is the square of another rational number. 1 ^ 2 = 1 2 ^ 2 = 4 5 ^ 2 = 25 6 ^ 2 = 36 7 ^ 2 = 49 etc. Your series is a perfect square with negative odd numbers. The next 3 numbers are : - 25 , 36 , - 49
*February 7, 2012*

**Trig**

In Quadrant III sin ( theta ) , cos ( theta ) , sec ( theta ) and csc( theta ) are negative. tan ( theta ) = sin ( theta ) / cos ( theta ) are positive. tan ( theta ) = + OR -1 / sqrt [ csc ( theta ) ^ 2 - 1 ] tan ( theta ) = + OR -1 / sqrt [ ( -2 ) ^ 2 - 1 ] tan ( theta...
*February 7, 2012*

**math**

In google type: calculatorsoup calculators fractionsorder When you see list of results click on: Ordering Fraction Calculator-Calculator Soup When page be open in rectangle type you are fractions separated wit comma and click option: Calculate You will see answers with ...
*February 7, 2012*

**I NEED HELP (ALGEBRA)**

( 8 x ) ^ 3 * 8 ^ ( -4 ) = 8 ^ 3 * x ^ 3 / 8 ^ 4 = 8 ^ 3 * x ^ 3 / ( 8 ^ 3 * 8 ) = [ ( 8 ^ 3 ) / ( 8 ^ 3 ) ] * ( x ^ 3 / 8 ) = x ^ 3 / 8 2 x ^ ( - 5 ) * y ^ ( - 3 ) = 2 / ( x ^ 5 * y ^ 3 ) [ (4 x ^ 4 y ^ ( - 3) ] ^ ( - 2 ) = [ ( 4 x ^ 4 / y ^ 3 ) ] ^ ( - 2 ) = 1 / ( 4 x ^ 4 / ...
*February 2, 2012*

**Trig**

tan ( x ) = sin ( x ) / cos ( x ) tan ( x ) + sin ( x ) = sin ( x ) / cos ( x ) + sin ( x ) = sin ( x ) * [ 1 / cos ( x ) + 1 ] = sin ( x ) * [ sec ( x ) + 1 ] = sin ( x ) * [ 1 + sec ( x )] [ 1 + sec ( x ) ] / [ tan ( x ) + sin ( x ) ] = [ 1 + sec ( x ) ] / [ sin ( x ) * [ 1...
*January 31, 2012*

**calculus**

Go on: wolframalpha dot com When page be open in rectangle type: limit sin(8 theta) / theta as theta->0 OR limit sin(8 theta) / theta as theta->infinity OR limit sin(8 theta) / theta as theta->-infinity and click option = After few seconds when you see result click ...
*January 31, 2012*

**college algebra**

log = natural logarithm log ( a ^ n ) = n * log ( a ) If your expression mean : e ^ ( 0.05 t ) = 1600 then : 0.05 t * log ( e ) = log ( 1600 ) Remark : The natural logarithm of e = 1 0.05 t = log ( 1600 ) Divide both sides by 0.05 t = log ( 1600 ) / 0.05 Remark : 1 / 0.05 = 20...
*January 31, 2012*

**Precalculus**

No it isn't. The correct answer is x = 0 6 ^ ( x + 3 ) = 6 ^ ( 0 + 3 ) = 6 ^ 3 = 216 6 ^ x = 6 ^ 0 = 1 216 - 1 = 215
*January 29, 2012*

**Integral Calculus**

Go on: wolframalpha dot com When page be open in rectangle type: integrate (5y+4) dy/ã5y-1 and click option = After few seconds when you see result click option: Show steps
*January 28, 2012*

**math-calculus**

| x ^ 2 - 2 x - 6 |= 4 Eliminate the absolute value : x ^ 2 - 2 x - 6 = 4 OR x ^ 2 - 2 x - 6 = - 4 Your must solve both equations. In google type: quadratic equation online When you see list of results click on: Free Online Quadratic Equation Solver:Solve by Quadratic Formula ...
*January 18, 2012*

**math**

100% = 100 / 100 = 1 10 % = 10 / 100 = 0.1 100% + 10 % = 1 + 0.1 = 1.1 A = Original Area A1 = New Area Original Area: A = W * L = 450 m ^ 2 New Area: A1 = 1.1 * W * 1.1 * L A1 = 1.1 * 1.1 * W * L ( Remark: W * L = A ) A1 = 1.21 * A A1 = 1.21 * 450 = 544.5 m ^ 2
*January 8, 2012*

**algebra**

1. All parts must be great of 0 less numbe is 11 solution x > 11 2. In google type: quadratic equation online When you see list of results click on: Free Online Quadratic Equation Solver:Solve by Quadratic Formula When page be open in rectangle type: 2x^2-x=-7 and click ...
*December 31, 2011*

**calculus**

Go on: wolframalpha dot com When page be open in rectangle type: integrate cos^3(2x-5)dx and click option = After few seconds when you see result click option: Show steps On wolframalpha dot com you can practice any kind of calculus.
*December 25, 2011*

**calculus**

Go on: wolframalpha dot com When page be open in rectangle type: derivative (5 sec^2 x-7 ) ^3 (x^5-5 cosec x - 1)^7 and click option = After few seconds when you see result click option: Show steps
*December 25, 2011*

**Trig**

sec ( theta ) = 1 / cos ( theta ) sec ( theta ) - cos( theta ) = [ 1 / cos ( theta ) ] - cos ( theta ) = [ 1 - cos ^ 2 ( theta )] / cos ( theta ) = sin ^ 2 ( theta) / cos ( theta ) = sin ( theta ) * sin ( theta ) / cos ( theta ) = [ sin ( theta ) / cos ( theta ) ] * sin ( ...
*December 17, 2011*

**geometry**

In google type: Use the figure below to answer questions 8-10. Point B is the midpoint of Segment A C.. You will find answer
*December 17, 2011*

**Calculus**

Go on: wolframalpha dot com When page be open in rectangle type: second derivative 3/(x^2+12) and click option = After few seconds when you see result click option: Show steps On wolframalpha dot com you can practice any kind of calculus.
*December 15, 2011*

**Trigonometry**

Remark: cos ^ 2 ( x ) = 1 - sin ^ 2 ( x ) 12 cos ^ 2 ( x )= 12 [ 1 - sin ^ 2 ( x ) ] = 12 - 12 sin ^ 2 ( x ) 29 sin ( x ) - 12 cos ^ 2 ( x ) + 4 = 29 sin ( x ) - [ 12 - 12 sin ^ 2 ( x ) ] + 4 = 29 sin ( x ) - 12 + 12 sin ^ 2 ( x ) + 4 = 29 sin ( x ) - 8 + 12 sin ^ 2 ( x ) = 12...
*December 11, 2011*

**Trigonometry**

If your expression mean: 4+29sin(x)=12cos^2(x) then go on: wolframalpha dot com When page be open in rectangle type: solve 4+29sin(x)=12cos^2(x) and click option = After few seconds when you see result click option: Show steps
*December 11, 2011*

**calc 1**

Go on: wolframalpha dot com When page be open in rectangle type: integrate e^(8x)sin(e^(8x)) and click option = After few seconds when you see result click option: Show steps On wolframalpha dot com you can practice any kind of calculus.
*December 9, 2011*

**calculus**

Go on: wolframalpha dot com When page be open in rectangle type: integrate (sin(2x))^2cos(2x)dx and click option = After few seconds when you see result click option: Show steps Then in rectangle type: derivative (1/6)sin(2x)^3 click option = and Show steps On wolframalpha dot...
*December 8, 2011*

**Math**

In google type: functions graphs online When you see list of results click on: rechneronline.de/function-graphs/ When page be open in blue rectangle type: x^2+3x-10 Set: Range x-axis from -6 to 4 Range y-axis from -13 to 7 and click option: Draw The graph of a quadratic ...
*December 7, 2011*

**calculus**

Go on: wolframalpha dot com When page be open in rectangle type: integrate (6x+7)/(x^2-8x+25) and click option = After few seconds when you see result click option: Show steps On wolframalpha dot com you can practice any kind of calculus.
*November 29, 2011*

**Math**

In google type: quadratic equation online When you see list of results click on: Free Online Quadratic Equation Solver:Solve by Quadratic Formula When page be open in rectangle type: 2x^2+8x=-5 and click option: solve it! You wil see solution step-by-step
*November 27, 2011*

**MATH**

Go on: wolframalpha dot com When page be open in rectangle type: integrate (x^2+1)^2 and click option = After few seconds when you see result click option: Show steps On wolframalpha dot com you can practice any kind of calculus.
*November 26, 2011*

**Algebra**

Go on: wolframalpha dot com When page be open in rectangle type: -4^2+44x-160=0 and click option = After few seconds you will see graph,and solution .
*November 22, 2011*

**math**

In google type: quadratic equation online When you see list of results click on: Free Online Quadratic Equation Solver:Solve by Quadratic Formula When page be open in rectangle type: x^2+18x+4=0 and click option: solve it! You wil see solution step-by-step.
*November 22, 2011*

**calculus**

Go on: wolframalpha dot com When page be open in rectangle type: x^3 - 12x^2 + 36x and click option = After few seconds you will see everything about that function.
*November 21, 2011*

**algerbra**

2 x + 7 < x + 6 2 x - x < 6 - 7 x < -1
*November 21, 2011*

**math**

On your computer you have calculator: start -> Programs -> Accessories -> Calculator When you open Calculator click: View then Sceintific
*November 19, 2011*

**Calculus**

Go on: wolframalpha dot com When page be open in rectangle type: integrate dx/sqrt(9-8x-x^2) and click option = After few seconds when you see result click option: Show steps
*November 19, 2011*

**Calculus**

Go on: wolframalpha dot com When page be open in rectangle type: integrate sin(4x) cos^2(4x) dx and click option = After few seconds when you see result click option: Show steps On wolframalpha dot com you can practice any kind of calculus.
*November 19, 2011*

**Math**

5 / 8 = 3 5 / 3 8 = 15 / 24 5 / 6 = 4 5 / 4 6 = 20 / 24 5 / 8 + 5 / 6 = 15 / 24 + 20 / 24 = 35 / 24 = ( 24 + 11 ) / 24 = 1 + 11 / 24 = 1 11 / 24 Correct. 13 1 / 2 = 13 6 / 6 + 3 / 6 = 78 / 6 + 3 / 6 = 81 / 6 7 2 / 3 = 7 6 / 6 + 4 / 6 = 42 / 6 + 4 / 6 = 46 / 6 13 1 / 2 + 7 2 / ...
*November 18, 2011*

**Alg. II**

1. 4 x - 8 = 4 ( x - 2 ) x ^ 2 - 2 x = x ( x - 2 ) (4 x - 8 ) / ( x ^ 2 - 2 x ) = 4 ( x - 2 ) / [ x ( x - 2 ) ] = 4 / x 2. ( 8 x - 4 ) = 4 ( 2 x - 1 ) 2 x ^ 2 + 9 x - 5 = 2 x ^ 2 + 9 x - 5 + x - x = ( 2 x ^ 2 - x ) + ( 10 x - 5 ) = x ( 2 x - 1 ) + 5 ( 2 x - 1 ) = ( 2 x - 1...
*November 17, 2011*

**Geometry**

A x-intercept is a point on the graph where y is zero. 4 x - 6 y = 12 for y = 0 4 x - 0 = 12 4 x = 12 Divide both sides with 4 x = 3 x-intercept = 3
*November 15, 2011*

**geometry**

W = Width L = Length A = Area W = L - 6 A = W * L 135 =( L - 6 ) * L 135 = L ^ 2 - 6 L The exact solution are : L = - 9 cm and L = 15 cm The length can't be negative so: L = 15 cm W = L - 6 W = 15 - 6 = 9 cm A = W * L = 15 * 9 = 135 cm ^ 2 P. S. If you don't know how ...
*November 15, 2011*

**MATH**

1. 5 / 8 = ( 3 * 5 ) / ( 3 * 8 ) = 15 / 24 5 / 6 = ( 4 * 5 ) / ( 4 * 6 ) = 20 / 24 5 / 8 + 5 / 6 = 15 / 24 + 20 / 24 = 35 / 24 = ( 24 + 11 ) / 24 = 1 11 / 24 2. 2 3 / 5 + 4 4 / 5 = 2 + 4 + 3 / 5 + 4 / 5 = 6 + 7 / 5 = 6 + ( 5 + 2 ) / 5 = 6 + 1 + 2 / 5 = 7 2 / 5 3. 1 / 2 = 3 / 6...
*November 15, 2011*

**algebra the slope- intercept form**

If the equation of the line is given in the form : y = m x + b then m is the slope. In this case slope = 1 A y-intercept is a point on the graph where x is zero. y = x - 7 for x = 0 y = 0 - 7 y = - 7 y-intercept = - 7 For graph : Go on: wolframalpha dot com When page be open ...
*November 15, 2011*

**polynomial function**

p( - 4 )= 4 * ( - 4 ) ^ 3 - 3 * ( - 4 ) - 4 = 4 * ( - 64 ) + 3 * 4 - 4 = -256 + 12 - 4 = - 248 p( 1 / 4 )= 4 * ( 1 / 4 ) ^ 3 - 3 * ( 1 / 4 ) - 4 = 4 * 1 / 64 - 3 / 4 - 4 = 4 / ( 4 * 16 ) - 3 / 4 - 4 = 1 / 16 - ( 3 * 4 ) / ( 4 * 4 ) - ( 4 * 16 / 16 ) = 1 / 16 - 12 / 16 - 64 / ...
*November 14, 2011*

**Math**

Take the input , divide it by 2 and then add 4. ( 12 / 2 ) + 4 = 6 + 4 = 10 ( ? / 2 ) + 4 = 16 Mulitiply both sides with 2 ? + 8 = 32 ? = 32 - 8 = 24 ( 32 / 2 ) + 4 = 16 + 4 = 20 ( 62 / 2 ) + 4 = 31 + 4 = 35 ( 70 / 2 ) + 4 = 35 + 4 = 39 ( 86 / 2 ) + 4 = 43 + 4 = 47 So, the ...
*November 14, 2011*

**algebra**

1.9 s + 6 = 3.1 - s 1.9 s + s = 3.1 - 6 2.9 s = - 2.9 Divide both sides with 2.9 s = - 1
*November 14, 2011*

**Math**

In google type: quadratic equation online When you see list of results click on: Free Online Quadratic Equation Solver:Solve by Quadratic Formula When page be open in rectangle type: -9v^2+35v-30=1-v and click option: solve it! You wil see solution step-by-step.
*November 14, 2011*

**Math**

3 ( x + 4 ) ^ 2 = - 27 Divide both sides with 3 ( x + 4 ) ^ 2 = - 9 The left hand side is a perfect square,so you can apply the square root method : x + 4 = + OR - sqrt ( - 9 ) x = + OR - sqrt ( - 9 )- 4 ( Remark: sqrt ( - 9 ) = sqrt ( - 1 * 3 ^ 2 ) = + OR - 3i where i = ...
*November 14, 2011*

**Calculus**

Go on: wolframalpha dot com When page be open in rectangle type: derivative ln(x^2/2x-3) and click option = After few seconds when you see result click option: Show steps On wolframalpha dot com you can practice any kind of calculus.
*November 7, 2011*

**algebra**

The equation of any straight line, called a linear equation, can be written as: y = m x + b where : m is the slope of the line and b is the y-intercept In this case: m = - 8 / 11 y-intercept = - 5
*November 7, 2011*

**algebra**

-7 ( 11 - 4w ) - 15 w = -27- ( 50 - 13 w ) = - 7 * 11 + 28 w - 15 w = - 27 - 50 + 13 w ( Remark : -7 * - 4 w = 28 w - ( -13 w ) = 13 w ) -77 + 28 w - 15 w = - 27 - 50 + 13 w 28 w - 15 w - 13 w = - 27 - 50 + 77 0 = - 77 + 77 0 = 0 All values of w are solutions.
*November 7, 2011*

**Algebra 2**

P = Perimeter L = Length W = Width P = 2 L + 2 W P = 2 ( L + W ) P = 122 m L = 5 W - 11 122 = 2 ( 5 W - 11 + W ) 122 = 2 ( 6 W - 11 ) 122 = 12 W - 22 122 + 22 = 12 W 12 W = 144 Diwidw both sides with 12 W = 144 / 12 W = 12 m L = 5 W - 11 L = 5 * 12 - 11 L = 60 - 11 L = 49 m P...
*November 5, 2011*

**Math 111**

a x ^ 4 + b x ^ 3 + c x ^ 2 + d x + e = a ( x - x1 ) * ( x - x2 ) * ( x - x3 ) * ( x - x4 ) In your case: a = 1 So: x ^ 4 + b x ^ 3 + c x ^ 2 + d x + e = ( x - ( - 6 ) ) * ( x - ( - 3 ) ) * ( x - 2 ) * ( x - 6 ) = ( x + 6 ) * ( x + 3 ) * ( x - 2 ) * ( x - 6 ) = x ^ 4 + x ^ 3...
*November 5, 2011*

**maths**

y = x - 2 y ^ 2 + x ^ 2 =10 ( x - 2 ) ^ 2 + x ^ 2 = 10 x ^ 2 - 2 * 2 x + 2 ^ 2 + x ^ 2 = 10 2 x ^ 2 - 4 x + 4 = 10 2 x ^ 2 - 4 x + 4 - 10 = 0 2 x ^ 2 - 4 x - 6 = 0 If you don't know how to solve this equation in google type: quadratic equation online When you see list of ...
*November 3, 2011*

**Math C30**

Go on: wolframalpha dot com When page be open in rectangle type: solve 2cos^2x=1 and click option = After few seconds when you see result click option: Show steps
*November 2, 2011*

**math**

7 - 4w <= 19 -4w <= 19 - 7 -4w <= 12 Divide both sides with -4 ( Remark: When you multiply or divide an inequality by a negative number, you must reverse the inequality symbol. ) w >= -3
*November 2, 2011*

**alegbra 1**

The equation of a straight line is : y = mx + b m = Slope b = the Y Intercept y = - 1 / 3 x - 3 Slope = - 1 / 3 Y Intercept = - 3
*October 27, 2011*

**algebra**

L = Lenght W = Width P = Perimeter P = 64 m W = 4 + L / 3 P = 2 * ( W + L ) = 64 m 64 = 2 * ( 4 + L / 3 + L ) Divide both sides with 2 32 = 4 + L / 3 + L 32 - 4 = L / 3 + L 28 = 4 L / 3 Multiply both sides with 3 28 * 3 = 4 L 84 = 4 L Divide both sides with 4 84 / 4 = L L = 21...
*October 27, 2011*

**Calculus**

Go on: wolframalpha dot com When page be open in rectangle type: derivative -3x((x+1)^1/2) and click option = After few seconds when you see result click option: Show steps On wolframalpha dot com you can practice any kind of calculus.
*October 26, 2011*

**Math**

6 + ( 4 x 3 ) x 2 = 30 6 + 12 x 2 = 30 6 + 24 = 30
*October 25, 2011*

**Pre Calculus**

1 - ln ( 3 x + 2 ) = 0 1 = ln ( 3 x + 2 ) Cancel logarithms by taking exp of both sides: e = 3 x + 2 3 x + 2 = e 3 x = e - 2 Divide both sides with 3 x = ( e - 2 ) / 3
*October 21, 2011*

**math**

a = first side b = second side A = Area b = a + 7 A = a * b A = a * ( a + 7 ) A = a ^ 2 + 7 a a ^ 2 + 7 a = 330 a ^ 2 + 7 a - 330 = 0 The exact solutions are: a = -22 and a = 15 The length can't be negative, so a = 15 m b = a + 7 b = 15 + 7 b = 22 m A = a * b A = 15 * 22 A...
*October 20, 2011*

**Algebra 2**

Go on: wolframalpha dot com When page be open in rectangle type: solve 2x^2 - 5bx + 4cx - 10bc = 0 and click option = After few seconds ,when you see results click option: Show steps
*October 18, 2011*

**algebra**

The answer of Ms,Sue is wrong. 9 / 10 Y = 36 Multiply both sides with 10 Y 9 = 36 * 10 Y 9 = 360 Y Divide both sides with 9 1 = 40 Y Divide both sides with 40 1 / 40 = Y Y = 1 / 40 Y = 0.025
*October 6, 2011*

**Math**

x + 4 y = 4 4 y = 4 - x Divide both sides with 4 y = 1 - x / 4 12 y = 12 - 3 12 y = 9 Divide both sides with 12 y = 9 / 12 y = ( 3 * 3 ) / ( 3 * 4 = y = 3 / 4 In google type : functions graphs online When you see list of results click on : rechneronline.de/function-graphs/ ...
*October 6, 2011*

**Calculus**

Go on: wolframalpha dot com When page be open in rectangle type: derivative (6x^3+2x)/(x^2-3x+5) and click option = After few seconds you will see result. Then click option: Show steps
*October 2, 2011*

**calculus**

Go on: wolframalpha dot com When page be open in rectangle type: solve e^8x^2-5 = 14 and click option = After few seconds you will see result. Then click option: Show steps
*October 2, 2011*

**math**

TODAY
*September 30, 2011*

**College Algebra :( **

In google type: functions graphs online When you see list of results click on: rechneronline.de/function-graphs/ When page be open in first rectangle type: 3x In second rectangle type: -2x In third rectangle type: (2/3)*x and click option: Draw Again open: rechneronline.de/...
*September 26, 2011*

**Calculus**

An inflection point is a point on a curve at which the second derivative changes sign. You must find point where second derivative = 0 Go on: wolframalpha dot com When page be open in rectangle type: second derivative of -10.61t^(3)+208.808t^(2)-168.202t+9775.234 and click ...
*September 22, 2011*

**algebra**

( 55 + 80 + 70 + x ) / 4 <= 65 Multiply both sides with 4 55 + 80 + 70 + x <= 65 * 4 55 + 80 + 70 + x <= 260 x <= 260 - 55 - 80 - 70 x <= 55
*September 18, 2011*

**algebra**

4 x + y = 5 y = 5 - 4 x 3 x – 7 y = 27 - 7 y = 27 - 3 x Divide both sides with -7 y = - 27 /7 + 3 x / 7 In google type: functions graphs online When you see list of results click on: rechneronline.de/function-graphs When page be open in blue rectangle type: 5 - 4 x In ...
*September 18, 2011*

**Algebra**

First in google type: Cramer's rule 2 equations When you see list of results click on: occc dot edu/maustin/cramers_rule/cramer's%rule.html and read text Then in google type: Cramer's rule 2x2 solver When you see results click on: Solver Using Cramer's Rule to ...
*September 16, 2011*

**Calculus**

Go on: wolframalpha dot com When page be open in rectangle type: limit x^4 as 2 After few seconds when you see result click option: Show steps
*September 16, 2011*

**math**

Correction: ( -9h + 12h ) + ( - 6 + 40 ) = 22
*September 15, 2011*

**math**

-9h - 6 + 12h + 40 = 22 ( -9h + 12h ) - ( 6 + 40 ) = 22 3h + 34 = 22 3h = 22 -34 3h = - 12 Divide both sides with 3 h = -4
*September 15, 2011*

**Maths**

In google type: monthly payment definition You will find many sites with definition
*September 14, 2011*

**geometry**

The "point-slope" form of the equation of a straight line is: y - y1 = m ( x - x1 ) (x1, y1) is a known point m is the slope of the line (x, y) is any other point on the line In this case: m = 5 / 3 , x1 = 57 , y1 = 12 y - 12 = ( 5 / 3 ) (x - 57 ) y = (5 x / 3 ) - ( ...
*September 13, 2011*

**algebra**

Go on wolframalpha dot com When page be open in rectangle type: solve 5/(2x+1)^2 - 3/(2x+1)=2 After few seconds when you see results click option: Show steps
*September 12, 2011*

**math 116**

Go on wolframalpha dot com When page be open in rectangle type: solve (Correct expression of your function) After few seconds when you see results click option: Show steps
*September 11, 2011*

**math 116**

8x 4=4x 7 What this mean? 8 x + 4 = 4x + 7 8 x + 4 = 4x - 7 8 x ^ 4 = 4x ^ 7 Or what?
*September 11, 2011*

**math 116**

8 x + 4 = 4x 7
*September 11, 2011*

**calculus**

Go on wolframalpha dot com When page be open in rectangle type: limit 3x/(sin2x) as x->0 and click option: = After few seconds when you see result click option: Show steps
*September 11, 2011*