Wednesday

May 4, 2016
Total # Posts: 2,106

**maths**

5 + 3 cosec ^ 2 (theta) = 8 3 cosec ^ 2 (theta) = 8 - 5 3 cosec ^ 2 (theta) = 3 Divide both sides by 3 cosec ^ 2 (theta) = 3 / 3 cosec ^ 2 (theta) = 1 cosec (theta) = sqrt ( 1 ) cosec (theta) = + OR - 1 cosec ( theta ) = 1 / sin ( theta ) sin ( theta ) = 1 / cosec ( theta ) ...
*February 27, 2012*

**arithmetic**

An arithmetic progression (A.P) or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant. If the initial term of an arithmetic progression is a1 and the common difference of successive members is d, then the nth term of...
*February 27, 2012*

**math**

2. x = 2 y = 3 translated to ( 7 , - 1 ) 7 - 2 = 5 - 1 - 3 = - 4 a) translate right 5 , down 4 3. x = - 5 y = - 8 When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is transformed into its opposite. c ) ( 5 , -8 )
*February 27, 2012*

**Algebra; MAJOR HELP**

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: s ^ 2 - 7 s + 14 = 2 and click option: solve it! You wil see solution step-by-step
*February 26, 2012*

**math**

There are b boys an g girls in the class b / g = 8 / 17 Multiply both sides by g b = 8 g / 17 b + g = 375 8 g / 17 + g = 375 8 g / 17 + 17 g / 17 = 375 25 g / 17 = 375 Multiply both sides by 17 25 g = 375 * 17 25 g = 6375 Divide both sides by 25 g = 6375 / 25 g = 255 b = 375...
*February 26, 2012*

**Math Help**

5 / 22 t = 2 * 5 / ( 2 * 22 ) t = 10 / 44 t 2 / 4 t = 2 * 11 / ( 4 * 11 ) t = 22 / 44 t 5 / 22 t + 2 / 4 t = 10 / 44 t + 22 / 44 t = 32 / 44 t = ( 4 * 8 ) / ( 4 * 11 ) t = 8 / 11 t
*February 26, 2012*

**Math**

You must solve two quadratic equations. 0.02 s ^ 2 + 1.1 s = 51 and 0.02 s ^ 2 + 1.1 s = 315.12 If you dont know how solve equations in google type: quadratic equation online When you see list of results click on: Free Online Quadratic Equation Solver:Solve by Quadratic ...
*February 25, 2012*

**Algebra; HELP**

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: 3x^2+18x+24=0 and click option: solve it! You wil see solution step-by-step
*February 23, 2012*

**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*