Tuesday

September 23, 2014

September 23, 2014

Total # Posts: 1,715

**math**

Pythagorean Theorem : c ^ 2 = a ^ 2 + b ^ 2 c = sqrt ( a ^ 2 + b ^ 2 ) c = sqrt ( 13 ^ 2 + 35 ^ 2 ) c = sqrt ( 169 + 1225 ) c = sqrt ( 1394 ) c = 37.336 km
*April 5, 2012*

**alg2/trig**

Quadratic equation has two real equals roots, if Discrininant Ä = 0 Ä = greek letter Delta
*April 5, 2012*

**alg2/trig**

4 x ^ 2 + 9 = kx 4 x ^ 2 - k x + 9 = 0 Quadratic equation has two real roots, if Discrininant Ä = 0 Ä = b ^ 2 - 4 * a * c In this case : a = 4 b = - k c = 9 Ä = b ^ 2 - 4 * a * c Ä = ( - k ) ^ 2 - 4 * ( 4 ) * 9 Ä = k ^ 2 - 144 = 0 k ^ 2 - 144 = 0 k ^ 2...
*April 5, 2012*

**Trig.**

è is greek letter theta
*April 5, 2012*

**Trig.**

Go on: wolframalpha dot com When page be open in rectangle type: solve 2tan^2è-2tanè=3 and click option = After few seconds when you see result click option: Show steps Solutions are : è = -58.71608 ° è = - 59 ° to the nearest degree and &...
*April 5, 2012*

**Alebra**

Divided by zero is undefined When: x - 2 = 0 x = 2 your expression is undefined.
*April 5, 2012*

**algebra**

t = 14 min M = −0.001 * t ^ 3 + 0.1 * t ^ 2 M = −0.001 * 14 ^ 3 + 0.1 * 14 ^ 2 M = −0.001 * 2744 + 0.1 * 196 M = - 2.744 + 19.6 M = 16.856 words
*April 5, 2012*

**Math-alg-calc**

x ^ ( - 1 / 7 ) = ( 1 / 2 ) mean 1 / seventh root of ( x ) = 1 / 2 reciprocal value: seventh root of ( x ) = 2 Raise both sides to the power of 7 [ seventh root of ( x ) ] ^ 7 = 2 ^ 7 x = 2 ^ 7 = 128
*April 5, 2012*

**Math**

a 1 = first number a 2 = a 1 + 1 = second number a 3 = a 1 + 2 = third number a 4 = a 1 + 3 = fourth number a 5 = a 1 + 4 = fifth number a 6 = a 1 + 5 = sixth number a 7 = a 1 + 6 = seventh number a 8 = a 1 + 7 = eighth numer a 9 = a 1 + 8 = ninth number a 10 = a 1 + 9 = tenth...
*April 4, 2012*

**Intermediate Algebra**

9 x ^ 2 + 5 x - 4 + ( - 8 x ^ 2 + 9 x - 9 ) = 9 x ^ 2 + 5 x - 4 - 8 x ^ 2 + 9 x - 9 = 9 x ^ 2 - 8 x ^ 2 + 5 x + 9 x - 4 - 9 = x ^ 2 + 14 x - 13
*April 3, 2012*

**MathLog#4**

1 / a - 1 / b = c 1 / a = c - 1 / b 1 / a = c b / b - 1 / b 1 / a = ( c b - 1 ) / b Reciprocal : a = b / ( c b - 1 )
*April 2, 2012*

**MATH HELP!**

n * ln ( a ) = ln ( a ^ n ) 2 ln ( x ) = ln ( x ^ 2 ) 3 ln ( y ) = ln ( y ^ 3 ) ( 1 / 2 ) ln ( z ) = ln [ z ^ ( 1 / 2 ) ] = ln [ sqrt ( z) ] ln ( a ) + ln ( b ) = ln ( a * b ) ln ( a ) - ln ( b ) = ln ( a / b ) In this case: 2 ln ( x ) - 3 ln ( y ) + ( 1 / 2 ) ln ( z ) = 2 ln...
*April 1, 2012*

**Trigonometry**

cos ^ 2 ( x ) = 1 - sin ^ 2 ( x ) sin ^ 2 ( x ) - cos ^ 2 ( x ) = 0 sin ^ 2 ( x ) - [ 1 - sin ^ 2 ( x ) ] = 0 sin ^ 2 ( x ) - 1 + sin ^ 2 ( x ) = 0 2 sin ^ 2 ( x ) - 1 = 0 2 sin ^ 2 ( x ) = 1 Divide both sides by 2 sin ^ 2 ( x ) = 1 / 2 sin ( x ) = ± 1 / sqrt ( 2 ) ...
*April 1, 2012*

**Intermediate Algebra**

A. x = 5 f ( 5 ) = 2 * 5 + 3.50 = 10 + 3.50 = 13.50 $ B. x = 3 / 4 f ( 3 / 4 ) = 2 * 3 / 4 + 3.50 = 6 / 4 + 3.50 = 6 / 4 + 7 / 2 = 6 / 4 + 14 / 4 = 20 / 4 = 5 $ C. f ( x ) = 50 50 = 2 x + 3.5 50 - 3. 5 = 2 x 46 . 5 = 2 x Divide both sides by 2 46.5 / 2 = x 23.25 = x x = 23.25 ...
*April 1, 2012*

**Math situations**

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: 2 x ^ 2 - 3 x = - 6 and click option: solve it! You wil see solution step-by-step
*March 31, 2012*

**Math**

When the leading coefficient a is positive, the parabola opens up ( concave up ) For function: x ^ 2 - 2 x - 8 the leading coefficient is a = 1 function is concave up When the parabola ia concawe up all walues between roots are negative. No negative number can have a real ...
*March 31, 2012*

**algebra**

V = r ^ 2 * pi * h V = 8 ^ 2 * pi * 12 V = 64 * pi * 12 V = 2412.743 ft ^ 3
*March 31, 2012*

**maths**

252 = 2 * 2 * 3 * 3 * 7
*March 31, 2012*

**Algebra**

C = Circumference A = Area r = Radius C = 2 r pi Divide both sides with 2 pi C / 2 pi = r r = C / 2 pi A = r ^ 2 pi A = ( C / 2 pi ) ^ 2 * pi A = ( C ^ 2 / 4 pi ^ 2 ) * pi A = C ^ 2 / 4 pi A = 25 ^ 2 / 4 pi A = 625 / ( 4 * 3. 14 ) A = 625 / 12.56 A = 49.761 m ^ 2 A = approx. ...
*March 30, 2012*

**algebra**

a + 6 b = 14 - a - 2 b = - 2 --------------- 6 b - 2 b = 14 - 2 4 b = 12 Divide both sides by 4 b = 12 / 4 b = 3 a + 6 b = 14 a + 6 * 3 = 14 a + 18 = 14 a = 14 - 18 a = - 4
*March 30, 2012*

**math**

A = Area W = Width L = Length P = Perimeter A = W * L 54 = W * 9 Divide both sides by 9 54 / 9 = W 6 = W W = 6 ft P = 2 ( W + L ) P = 2 ( 9 + 6 ) P = 2 * 15 P = 30 ft
*March 30, 2012*

**Math situation**

( a - 4 ) ^ 2 = a ^ 2 - 2 * a * 4 + 4 ^ 2 = a ^ 2 - 8 a + 16 2 a ^ 2 -1 6 a + 32 = 2 * [ ( a - 4 ) ]^ 2 ( 64 a ^ 2 ) / ( 2 a ^ 2 - 16 a + 32 ) * ( 2 a - 8 ) / 8 a = ( 64 a ^ 2 / 8 a ) * ( 2a - 8 ) / 2 * [ ( a - 4 ) ] ^ 2 = 8 a * ( 2 a - 8 ) / [ 2 * [ ( a - 4 ) ]^ 2 = [ 8 a * 2...
*March 30, 2012*

**algebra**

r ^ 3 + 216 / r + 6 = r ^ 3 * r / r + 216 / r + 6 r / r = ( r ^ 4 + 216 + 6 r )/ r= ( r ^ 4 + 6 r + 216 ) / r
*March 30, 2012*

**math problem**

All parts of the uneqiations must be large of 0 Less part is ( x - 12 ) Solution x > 12
*March 30, 2012*

**Calculus**

Go on: wolframalpha dot com When page be open in rectangle type: partial fractions (x - x^3) / (x^4 +1) and click option = After few seconds when you see result click option: Show steps Then type: integrate (x - x^3) / (x^4 +1) After few seconds when you see result click ...
*March 30, 2012*

**algebra**

m = 0 b = - 4 y = mx + b y = 0 * x + ( - 4 ) y = 0 - 4 y = - 4
*March 30, 2012*

**Math Problem**

c ^ 16 = c ^ 7 * c ^ 9 c ^ 7 / ( c ^ 7 * c ^ 9 ) = 1 / c ^ 9 = c ^ - 9
*March 30, 2012*

**math**

( 1 / 2 ) x + 360 = ( 4 / 5 ) x 360 = ( 4 / 5 ) x - ( 1 / 2 ) x 360 = ( 8 / 10 ) x - ( 5 / 10 ) x 360 = ( 3 / 10 ) x ( 3 / 10 ) x = 360 Multiply both sides by 10 3 x = 360 * 10 3 x = 3600 Divide both sides by 3 x = 3600 / 3 x = 1200 pennies
*March 30, 2012*

**math problem**

- 12 a ^ 2 + 3 a + 3 - ( 6 a ^ 2 + 3 ) = - 12 a ^ 2 + 3 a + 3 - 6 a ^ 2 - 3 = - 12 a ^ 2 - 6 a ^ 2 + 3 a + 3 - 3 = - 18 a ^ 2 + 3 a = 3 a ( - 6 a + 1 ) = 3 a ( 1 - 6 a ) = -3 a ( 6 a - 1 )
*March 30, 2012*

**Math11**

A) 1 / 128 B ) 30 * 128 = 3840 cm = 38.4 m Remark: 1 m = 100 cm 3840 cm / 100 cm = 38.4 m
*March 30, 2012*

**Intermediate Algebra**

2.43 * 10 ^ - 4
*March 30, 2012*

**Tech math**

y = sin ( 2 x + 75 ° ) x = 295 ° y = sin ( 2 * 295 ° + 75 ° ) y = sin ( 590 ° + 75 ° ) y = sin ( 665 ° ) y = sin ( 360 ° + 305 ° ) ------------------------------------ Remark: sin ( 360 ° + theta ) = sin ( theta...
*March 30, 2012*

**Math**

1 revolution = 2 pi radians 450 pi / 2 pi = 225 revolutions
*March 30, 2012*

**Math**

1 2 5 10 17 26 37 50 65 82 If you subtract 1 from every number is should be obvious. 0 1 4 9 16 25 36 64 81 These are the perfect squares. So the answer is: n ^ 2 + 1 Next nunbers : 10 ^ 2 + 1 = 100 + 1 =101 11 ^ 2 + 1 = 121 + 1 = 122 13 ^ 2 + 1 = 169 + 1 = 170 14 ^ 2 + 1 = ...
*March 30, 2012*

**math**

1 - ( 1 / 2 + 1 / 3 ) = 1 - ( 3 / 6 + 2 / 6 ) = 1 - 5 / 6 = 6 / 6 - 5 / 6 = 1 / 6
*March 29, 2012*

**trig**

2 sin ^ 2 ( x ) - 1 = 0 2 sin ^ 2 ( x ) = 1 Divide both sides by 2 sin ^ 2 ( x ) = 1 / 2 sin ( x ) = ± 1 / sqrt ( 2 ) sin ( x ) = 1 / sqrt ( 2 ) for x = pi / 4 and x = 3 pi / 4 sin ( x ) = - 1 / sqrt ( 2 ) for x = 5 pi / 4 and x = 7 pi / 4
*March 29, 2012*

**geometry**

350 * 24 * 30 / ( 8 * 10 ) = 350 * 720 / 80 = 350 * 9 = 3150 $
*March 29, 2012*

**Geometry**

2 / 5 = 7 / x Multiply both sides by x 2 x / 5 = 7 Multiply both sides by 5 2 x = 7 * 5 2 x = 35 Divide both sides by 2 x = 35 / 2 x = 17.5 ft
*March 29, 2012*

**math**

1 h = 60 min 60 / 4 = 15 15 * 52 = 780 miles / hour OR 52 / 4 = 13 miles / min
*March 28, 2012*

**Math**

- 3 y + 5 > 23 - 3 y > 23 - 5 - 3 y > 18 FDivide both sides by - 3 --------------------------------------- Remark : Whenever you multiply or divide an inequality by a negative number, you must reverse the inequality sign. --------------------------------------- y <...
*March 28, 2012*

**trig**

sin ( x ) * tan ( x ) = sin ( x ) * sin ( x ) / cos ( x ) = sin ^ 2 ( x ) / cos ( x )
*March 26, 2012*

**trig**

tan ( x ) = sin ( x ) / cos ( x ) sin ( x ) * tan ( x ) ) sin ( x ) * sin ( x ) / cos ( x ) = sin ^ 2 ( x ) / cos ( x ) cos( x )/ [ sin ( x ) * tan ( x ) ]= cos ( x ) / [ sin ^ 2 ( x ) / cos ( x ) ] = [ cos ( x ) / 1 ] / [ sin ^ 2 ( x ) / cos ( x ) ]= cos ( x ) * cos ( x ) / ...
*March 26, 2012*

**math problem**

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 + 14 x - 4 = 0 and click option: solve it! You wil see solution step-by-step
*March 26, 2012*

**algebra**

x + y = 38 x - y = 26 - x x + x - y = 26 2 x - y = 26 x - y = 26 - x is equivalet to : 2 x - y = 26 Your system is : x + y = 38 2 x - y = 26 Using Substitution Method. Expressing y as a function of x (from the first equation) x + y = 38 y = 38 - x Substituting this expression ...
*March 25, 2012*

**6th Grade Math**

All your answer is correct.
*March 22, 2012*

**trig**

x = 60 ° cos 60 ° = 1 / 2
*March 22, 2012*

**Calculus**

x1 = 2 x2 = -6 y1 = 3 y2 = 4 Length of first side : a = x1 - x2 a = 2 - ( - 6 ) a = 2 + 6 = 8 Length of second side : b = | ( y1 - y2 ) | b = | 3 - 4 | b = | - 1 | b = 1 P = 2 ( a + b ) P = 2 ( 8 + 1 ) P = 2 * 9 = 18 Remark : | | mean absolute value
*March 22, 2012*

**Match Check**

1 /0.125 = 80
*March 22, 2012*

**ALGEBRA**

Also you can in google type: half-life equation and click : en.wikipedia
*March 21, 2012*

**ALGEBRA**

Equation : N( t ) = N( 0 ) * ( 1 / 2 ) ^ [ t / t( 1 / 2) ] In this case : N ( 30 ) = 480 * ( 1 / 2 ) ^ ( 30 / 10 ) N ( 30 ) = 480 * ( 1 / 2 ) ^ 3 N ( 30 ) = 480 * 1 / 8 = 60 grams
*March 21, 2012*

**ALGEBRA**

After 10 days you have half left After 20 days that's half of the half again = a quarter After 30 days that's half of a quarter = an eighth 480 / 8 = 60 grams
*March 21, 2012*

**Math**

In google type : factor 81a^2 + 36a + 4 When you see lis of results: SOLUTION: Please help, factor the expression 81a^2-36ab+4b^2 ... algebra dotcom/.../Polynomials-and-rational-expressions.faq.questi
*March 21, 2012*

**Calculus**

Go on: wolframalpha dot com When page be open in rectangle type: limit (x-sin(x))/(x-tan(x)) as x->0 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.
*March 21, 2012*

**math**

A = Area L = Lenght W = Width New lenght L = 125 + x New width W = 75 + x A = W * L A = ( 125 + x ) * ( 75 + x ) A = 75 * 125 + 75 * x + x * 125 + x * x A = 9375 + 75 x + 125 x + x ^ 2 A = x ^ 2 + 200 x + 9375
*March 21, 2012*

**maths**

x / 20 = 0.6 Multiply both sides by 20 20 x / 20 = 0.6 * 20 x = 12
*March 21, 2012*

**geometry**

trapezoid In google type : Only one pair of opposite sides is parallel When you see lis of resuts click on : Quadrilaterals - Square, Rectangle, Rhombus, Trapezoid ...
*March 19, 2012*

**precalc!!!!!**

( a - b ) * ( a ^ 2 + a * b + b ^ 2 ) = a * a ^ 2 + a * a * b + a * b ^ 2 - b * a ^ 2 - b * a * b - b * b ^ 2 = a ^ 3 + a ^ 2 * b + a * b ^ 2 - a ^ 2 * b - a * b ^ 2 - b ^ 3 = a ^ 3 - b ^ 3
*March 19, 2012*

**algebra**

x = - 1 y = - 3 A x – 4 y = 9 A * ( - 1 ) - 4 * ( - 3 ) = 9 - A + 12 = 9 - A = 9 - 12 - A = -3 Multiply both sides by - 1 A = 3 4 x + B y = –1 4 * ( - 1 ) + B * ( - 3 ) = - 1 - 4 - 3 B = - 1 - 3 B = - 1 + 4 - 3 B = 3 Divide both sides by - 3 B = 3 / - 3 B = - 1
*March 18, 2012*

**algebra**

2 x – 3 y = 10 Multiply both sides by 2 4 x - 6 y = 20 5 x + 2 y = 6 Multiply both sides by 3 15 x + 6 y = 18 4 x - 6 y = 20 + 15 x + 6 y = 18 ---------------- 4 x + 15 x - 6 y + 6 y = 20 + 18 19 x = 38 Divide both sides by 19 x = 38 / 19 x = 2 To get the value of y you ...
*March 18, 2012*

**Math**

CORRECTION: ( 2 x ^ 3 ) ^ ( - 3 ) = 2 ^ ( - 3 ) * x ^ [ 3 * ( - 3 ) ] = 2 ^ ( - 3 ) * x ^ ( - 9 ) 1 / ( 2 ^ 3 * x ^ 9 ) = 1 / 8 x ^ 9
*March 18, 2012*

**Math**

( x ^ 2 ) ^ 3 = x ^ 6 ( 2 x ^ 3 ) ^ ( - 3 ) = 2 ^ ( - 3 ) * x ^ [ ( - 3 ) * ( - 3 ) ] = 2 ^ ( - 3 ) * x ^ ( - 9 ) 1 / ( 2 ^ 3 * x ^ 9 ) = 1 / 8 x ^ 9 3 /( 4 x )^ 2 = 3 / ( 4 ^ 2 x ^ 2 ) = 1 / 16 x ^ 2 ( x ^ 2 )^ 3 ( 2 x ^ 3 )^ -3 / ( 4 x ) ^ 2 = x ^ 6 * 1 / 8 x ^ 9 * 1 / 16 x...
*March 18, 2012*

**algebra**

1. 1 h = 60 min 1 h 24 min = 84 min ( 7 / 2 ) * 84 min = 7 * 84 / 2 = 588 / 2 = 294 min 4 h = 4 * 60 = 240 min 294 min = 240 min + 54 min 294 min = 2 h 54 min 2. P = 2 l + 2 w P - 2 l = 2 w 2 w = P - 2 l Divide both sides by 2 w = ( P - 2 l ) / 2 OR w = ( P / 2 ) - l
*March 18, 2012*

**Math 2**

x = - 3 , y = 8 QUADRANT II arc tan ( sqrt 73 ) = 83.324408° tan ( theta ) = - sqrt ( 73 ) theta = 180 ° - 83.324408° theta = 96.675592° theta = 96° 40' 32"
*March 18, 2012*

**Math(Please check)**

If you must simplify your answer: x ^ 2 = 106.4 / 2.5 * ( 10 / 10 ) x ^ 2 = 1064 / 25 x ^ 2 = 4 * 266 / 25 x = sqrt ( 4 * 266 / 25 ) x = ± (2 / 5 ) * sqrt ( 266 )
*March 18, 2012*

**Math(Please check)**

2.5 * 10 ^ ( - 3) = ( 0.28 ) * ( 0.38 ) / x ^ 2 Multiply both sides by x ^ 2 2.5 * 10 ^ ( - 3) * x ^ 2 = ( 0.28 ) * ( 0.38 ) 2.5 * 10 ^ ( - 3) * x ^ 2 = 0.1064 Divide both sides by 2.5 * 10 ^ ( - 3) x ^ 2 = 0.1064 / 2.5 * 10 ^ ( - 3) x ^ 2 = 0.1064 * 10 ^ 3 / 2.5 Remark: 1 / ...
*March 18, 2012*

**Math help**

Not necessary. x intercept - 4 x - 3 = 0 - 4 x = 3 Divide both sides by - 4 x = - 3 / 4 A line passing through points : x = - 3 / 4 , y = 0 and x = 0 , y = - 3
*March 18, 2012*

**Math help**

In this case : slope = - 4 y intercept = - 3 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: -4x-3 And click option: Draw
*March 18, 2012*

**precalc!!!!!**

Go on calc 101 dot com When page be open click option : long division
*March 18, 2012*

**pre-calculus**

In google type : r=3cos2theta When you see list of results click on : Advanced Math: precal, trig identities, conversion You will see answer.
*March 18, 2012*

**Algebra**

Line x = 1 are parallel with y-axis and passing through point x = 1 The angle theta a line makes with the positive x axis is closely related to the slope m via the tangent function: m = tan ( theta ) In this case theta = 90 ° tan 90 ° = infinity Slope of line x = 1 m...
*March 18, 2012*

**Algebra**

y = m x + b m = slope b = y-intercept In this case : slope m = 5 / 3 y-intercept = - 3 y = ( 5 / 3 ) x + ( - 3 ) y = ( 5 / 3 ) x - 3
*March 18, 2012*

**algebra 2**

A = Area of the printed matter w = width a = 10 - 2 w b = 18 - 2 w ( 10 - 2 w ) * ( 18 - 2 w ) = A 18 * 10 - 18 * 2 w - 2 w * 10 - 2 w * ( - 2 w ) = A 180 - 36 w - 20 w + 4 w ^ 2 = A 4 w ^ 2 - 56 w + 180 - A = 0 Are you sre that the printed matter of a book must cover 0 cm ^ 2 ?
*March 18, 2012*

**algebra 2**

A = Area b = base h = height h = b + 3 A = b * h / 2 = 189 ft ^ 2 b * h / 2 = b * ( b + 3 ) / 2 = 189 Multiply both sides by 2 b * ( b + 3 ) = 378 b ^ 2 + 3 b - 378 = 0 The solutions are : b = 18 ft and b = - 21 ft The base can't be negative,so solution are : b = 18 ft h...
*March 18, 2012*

**Algebra1**

1 ft = 12 in 1 ft ^ 2 = ( 12 ^ 2 ) in ^ 2 1 ft ^ 2 = 144 in ^ 2 15 * 144 = 2160 15 ft ^ 2 = 2160 in ^ 2 2160 / 180 = 12 12 hours
*March 18, 2012*

**algebra**

Two point form of linear equation : y - y 1 = ( y 2 - y 1 ) * ( x - x 1 ) / ( x 2 - x 1 ) Te slope is explicitly given as m = ( y 2 - y 1) / ( x 2 - x 1 ) In this case : x 1 = - 2 x 2 = 3 y 1 = 8 y 2 = 5 m = ( y 2 - y 1 ) / ( x 2 - x 1 ) m = ( 5 - 8 ) / [ 3 - ( - 2 ) ] m = - 3...
*March 18, 2012*

**Math**

Factorisation : 4356 = 2 * 2 * 3 * 3 * 11 * 11 60 = 2 * 2 * 3 * 5 4356 / 60 = 2 * 2 * 3 * 3 * 11 * 11 / ( 2 * 2 * 3 * 5 ) = 3 * 11 * 11 / 5 = 363 / 5 = 72.6
*March 18, 2012*

**MAT/116**

- 1 + ( - 6) = - 1 - 6 = -7
*March 17, 2012*

**Algebra**

CORRECTION : When page be open in blue rectangle type: x ^ 2 - 55 x + 650 Set: Range x-axis from - 20 to 80 Range y-axis from - 200 to 800 And click option: Draw
*March 16, 2012*

**Algebra**

If you must draw function : L ^ 2 - 55 L + 650 = 0 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 - 55 x + 650 = 0 Set: Range x-axis from - 20 to 80 Range y-axis ...
*March 16, 2012*

**Algebra**

A = Area F = Fencing W = Width L = Length A = W * L = 650 m ^ 2 W * L = 650 Divide both sides by L W = 650 / L F = 2 W + 2 L = 2 ( W + L ) = 110 m 2 ( W + L ) = 110 Divide both sides by 2 W + L = 110 / 2 W + L = 55 650 / L + L = 55 Multiply both sides by L 650 + L * L = 55 L ...
*March 16, 2012*

**5th grade maths**

36 / 3 = 12 12 - 2 = 10 33 / 3 = 11 11 - 2 = 9 30 / 3 = 10 10 - 2 = 8 27 / 3 = 9 9 - 2 = 7 24 / 3 = 8 8 - 2 = 6 Your function : y = ( x / 3 ) - 2 When x decrease for 3 y decrease for 1
*March 14, 2012*

**GEOMETRY**

start -> Programs -> Accessories -> Calculator -> View -> Sceintific 4 ° 35 ' 19 "
*March 14, 2012*

**GEOMETRY**

81 ° 47 ' 12 "
*March 14, 2012*

**Algebra 1**

y = 6 x + 58 OR y + 14 = 6 x + 58 + 14 y + 14 = 6 x + 72 y + 14 = 6 ( x + 12 ) Ansver B is correct Proof: y + 14 = 6 ( x + 12 ) - 14 + 14 = 6 ( - 12 + 12 ) 0 = 6 * 0 0 = 0
*March 13, 2012*

**Algebra 1**

y = m x + b m = slope in tis case: m = 6 x = - 12 y = - 14 y = 6 x + b - 14 = 6 * ( - 12 ) + b - 14 = - 72 + b - 14 + 72 = b 58 = b b = 58 y = m x + b y = 6 x + 58
*March 13, 2012*

**Mathematics**

3 y = 84 - 6 x Divide both sides by 3 y = 28 - 2 x 3 x - 21 = 2 y 3 x - 21 = 2 ( 28 - 2 x ) 3 x - 21 = 56 - 4 x 3 x + 4 x = 56 + 21 7 x = 77 Divide both sides by 7 x = 77 / 7 x = 11 y = 28 - 2 x y = 28 - 2 * 11 y = 28 - 22 y = 6 D.6
*March 13, 2012*

**Math**

2 ( 4 y + 5 z ) - 10 z = 2 * 4 y + 2 * 5 z - 10 z = 8 y + 10 z - 10 z = 8 y
*March 13, 2012*

**math lit**

2 and half hours =120+30=150 min 2/150 = 1 exam/75 min
*March 13, 2012*

**Help! Math**

15 / 20 = 3 * 5 / ( 4 * 5 ) = 3 / 4 = 0.75 3 / 4 6 / 8 9 / 12 12 / 16 18 / 24
*March 13, 2012*

**Math(alg2)**

If 5(2)^2x - 4 = 13 mean 5 * [ 2 ^ ( 2 x ) ] - 4 = 13 then 5 * 2 ^ 2 x - 4 = 13 5 * 2 ^ 2 x = 13 + 4 5 * 2 ^ 2 x = 17 Divide both sides by 5 2 ^ 2 x = 17 / 5 2 x * log ( 2 ) = log ( 17 / 5 ) 2 x * log ( 2 ) = log ( 17 ) - log ( 5 ) Divide both sides by 2 log ( 2) x = [ log ( ...
*March 13, 2012*

**Math - HELP !**

31 students are in the drama club.
*March 10, 2012*

**Math - HELP !**

62 % = 62 / 100 62 * 50 / 100 = 3100 / 100 = 31 Proof: ( 31 / 50 ) * 100 % = 3100 % / 50 = 62 %
*March 10, 2012*

**math**

True. 40 = 2 * 2 * 2 * 5 100 = 2 * 2 * 5 * 5 40 % = 40 / 100 = ( 2 * 2 * 2 * 5 ) / ( 2 * 2 * 5 * 5 ) = 2 / 5 OR ( 2 / 5 ) * 100 % = 0.4 * 100 % = 40 %
*March 10, 2012*

**Math: Limits**

Go on : wolframalpha dot com When page be open in rectangle type : limit 6e^(x − 5) as x->5 and click option = When you see result click option: Show steps
*March 10, 2012*

**Algebra **

W = Width = 7 cm L = Length A = Area A = W * L A < 161 cm ^ 2 W * L < 161 7 * L < 161 Divide both sides by 7 L < 161 / 7 L < 23 cm
*March 10, 2012*

**math**

40 + ( x - 600 ) * 0.35 = 50 + ( x - 600 ) * 0.1 40 + 0.35 x - 600 * 0.35 = 50 + 0.1 x - 600 * 0.1 40 + 0.35 x - 210 = 50 + 0.1 x - 60 0.35 x - 170 = 0.1 x - 10 0.35 x - 0. 1 x = - 10 + 170 0.25 x = 160 Divide both sides by 0.25 x = 160 / 0.25 = 160 * 4 x = 640 Remark : ...
*March 10, 2012*

**algebra**

( 75 + 82 + 90 + 84 + 71 + n ) / 6 > OR = 80 Multiplly both sides by 6 75 + 82 + 90 + 84 + 71 + n > OR = 6 * 80 402 + n > OR = 480 n > OR = 480 - 402 n > OR = 78
*March 7, 2012*

**math**

1.) 19 / n = 0.76 Multiply both sides by n 19 = n * 0.76 Divide both sides by 0.76 19 / 0.76 = n 25 = n n = 25 2.) n : 20 = 0.55 Multiply both sides by 20 n = 0.55 * 20 n = 11 3.) n = 1 : 10 n = 0.1 4.) n % = 1 : 100 1 % = 1 : 100 5.) n % = 33 : 100 33 % = 33 : 100 6.) 99 % = ...
*March 7, 2012*

**Calculus-verify**

Your ansver is correct. Go on : calc101 dot com When page be open click option : derivatives When page be open in rectangle type: 5/3x^3-x^(3/2)+6 and click option : DO IT You will see solution step by step
*March 7, 2012*

**Math problem solvimg**

( 67 + x ) / ( 19 + x ) = 3 Multiply blth sides by ( 19 + x ) 67 + x = 3 ( 19 + x ) 67 + x = 3 * 19 + 3 * x 67 + x = 57 + 3 x 67 - 57 = 3 x - x 10 = 2x 2 x = 10 Divide both sides by 2 x = 10 / 2 x = 5 Salys age will be 19 + 5 = 24 Granfathes age will be 37 + 5 = 72 72 / 24 = 3
*March 6, 2012*

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