Monday
January 23, 2017

# Posts by Bosnian

Total # Posts: 2,320

Algebra 1
d = r t 48 = r * 16 Divide both sides by 16 48 / 16 = r * 16 / 16 3 = r r = 3
August 5, 2012

Algebra
- 2 ( t - 7 ) - ( t + 8 ) = 8 - 2 * t - 2 * ( - 7 ) - t - 8 = 8 - 2 t + 14 - t - 8 = 8 - 3 t + 6 = 8 Subtrac 6 to both sides - 3 t + 6 - 6 = 8 - 6 - 3 t = 2 divide both sides by - 3 t = - 2 / 3
August 5, 2012

algebra
a + 7b = 17 - a + 2b = 2 __________ ( a - a ) + ( 7b - 2b ) = 17 - 2 5b = 15 Divide both sides by 5 b = 15 / 5 = 3 a + 7b = 17 a + 7 * 3 = 17 a + 21 = 17 Subtract 21 to both sides a + 21 - 21 = 17 - 21 a = - 4
August 5, 2012

mathematics
In point where firs derivative = 0 function have loca minimum or maximum. If second derivative < 0 that is local maxsimum. If second derivative > 0 that is local minimum. If expression 3cos2x mean : 3 cos (2 x ) then first derivative = - 6 sin ( 2 x ) - 6 sin( 2 x ) = 0 ...
August 4, 2012

math
x + 3 y = 7 Subtract 3 y to both sides x + 3 y - 3 y = 7 - 3 y x = 7 - 3 y Put x = 7 - 3 y into equation x + 4 y = 12 7 - 3 y + 4 y = 12 7 + y = 12 Subtract 7 to both sides 7 + y - 7 = 12 - 7 y = 5 Replacing y = 5 into x = 7 - 3 y gives x = 7 - 3 * 5 x = 7 - 15 x = - 8
August 4, 2012

math
Set of known values: x = 1 , y = 280 x = 2 , y = 480 x = 3 , y = 684 x = 4 , y = 913 x = 5 , y = 1205 x = 6 , y = 1615 The interpolating polynomial is : y = ( 17 x ^ 4 - 86 x ^ 3 + 139 x ^ 2 + 4730 x + 1920 ) / 24 For x = 7 , y = 2215 Next term : 2215
August 3, 2012

Algebra
After half hour studen have 9 - 1 = 8 \$ x = 8 / 1.25 = 6.4 h A partial hour is charge the same as a full hour so x = 6 h 0.5 + x = 0.5 + 6 = 6.5 h
August 1, 2012

Mathematics
1 h = 60 min 9 h 07 mim = 8 h + 1 h + 7 min = 8 h + 60 min + 7 min = 8 h 67 min 9 h 7 min - 8 h 55 min = 8 h 67 min - 8 h 55 min = 12 min Distance : 1083 km - 957 km = 126 km The average speed : 1 h = 60 min 12 min = 1 / 5 h 126 / ( 1 / 5 ) = 5 * 126 = 630 km / h
July 31, 2012

maths
tan theta = H / L tan theta = 4 / 1.8 = 2.222222 theta = 65 ° 46 ´ 20 "
July 31, 2012

math
4 x + 3 y = 0 16 x + 3 = 8y ______________ Multiply the first equation by 4 16 x + 12 y = 0 16 x + 3 = 8y ______________ Subtract 8 y by second equation 16 x + 12 y = 0 16 x + 3 - 8 y = 8y - 8y = 0 ______________ 16 x + 12 y = 0 16 x + 3 - 8 y = 0 ______________ Subtract 3 by ...
July 31, 2012

calculus
Go on : wolframalpha dot com Whe page be open in rectangle type : derivative tan^4(2x) then click option = After few seconds when you see result click option : Show steps
July 28, 2012

Algebra
Remark: ¡Ý mean greater or equal
July 28, 2012

Algebra
5 ( x + 6 ) = 5 x + 30 12 x - 25 ¡Ý 3 x - 5 ( x + 6 ) 12 x - 25 ¡Ý 3 x - ( 5 / x - 6 ) ) 12 x - 25 3 x - ( 5 x + 30 ) 12 x - 25 ¡Ý 3 x - 5 x - 30 12 x - 25 ¡Ý - 2 x - 30 Add 2 x to both dides 12 x - 25 + 2 x ¡Ý...
July 28, 2012

math
12 % = 12 / 100 = 0.12 250 / 0.12 = 250 * 100 / ( 0.12 * 100 ) 25,000 / 12 = 2 * 2 * 2 * 5 * 5 * 5 * 5 * 5 / ( 2 * 2 * 3 ) = 2 * 5 * 5 * 5 * 5 * 5 / 3 = 6250/ 3 = 2083.3333...
July 28, 2012

Math
1 kg = 1000 g 2 kg 300 g = 1 kg + 1 kg + 300 g = 1 kg + 1000 g + 300 g = 1 kg 1300 g 2 kg 300 g - 1 kg 700 g = 1 kg 1300 g - 1 kg 700 g = 600 g The mass of the empty basket = 600 g
July 28, 2012

Math
L = 2 + 2 W = 2 ( 1 + W ) A = L * W 24 = 2 * ( 1 + W ) * W 24 = 2 * ( W + W ^ 2 ) Divide both sides by 2 12 = W + W ^ 2 Subtract 12 to both sides 0 = W + W ^ 2 - 12 Now you must solwe equation : W ^ 2 + W - 12 = 0 The exact solutions are 3 and - 4 Width cannot be negative so W...
July 27, 2012

math
The vertex of a parabola: y = a x ^ 2 + b x + c is the point where the parabola crosses its axis. If the coefficient of the x ^ 2 term is positive, the vertex will be the lowest point on the graph, the point at the bottom of the “U”-shape. If the coefficient of the x...
July 26, 2012

calculus
Go on: wolframalpha dot com When page be open in rectangle type: limit x^3-2/x^2+x as x-> - infinity and click option = After few seconds when you see result click option: Show steps On wolfram alpha dot com you can practice any kind of calculus. That is good just for ...
July 25, 2012

calculus
Go on: wolframalpha dot com When page be open in rectangle type: derivative sin(x^3-5x^2+4x-7) and click option = After few seconds when you see result click option: Show steps On wolfram alpha dot com you can practice any kind of calculus. That is good just for practice. You ...
July 23, 2012

math help
P.S. When you type : derivative (x^2+lnx)(2+e^x) you must click option = in rectangle
July 20, 2012

math help
Go on : wolframalpha dot com When page be open in rectangle type : derivative (x^2+lnx)(2+e^x) After few seconds when you see results click option : Show steps
July 20, 2012

math help
July 20, 2012

math
July 19, 2012

Geometry
tan ( theta ) = 4 / 3 theta = inverse tangent ( 4 / 3 ) theta = 53 ° 7 ´ 48 " theta = 53 ° to the nearest degree
July 19, 2012

Math
¡Ý mean greater or equal
July 18, 2012

Math
- 5 ( 4 x - 14 ) ¡Ý - 25 x + 35 - 20 x + 70 ¡Ý - 25 x + 35 - 20 x + 25 x ¡Ý 35 - 70 5 x ¡Ý - 35 Divide both sides by 5 x ¡Ý - 7 Ansver D
July 18, 2012

Algebra
The graph of any function in the form y = a x ^ 2 + b x + c is a parabola. A quadratic equationhas two solutions. In this case : x 1 = [ - 3 -s qrt ( 29 ) ] / 10 and x 2 = [ - 3 + sqrt ( 29 ) ] / 10 If coefficient a is positive then the graph of parabola is concave up. If ...
July 16, 2012

ALGEBRA
x = - 6 y = ( 4 / 3 ) * ( - 6 ) + 1 = - 24 / 3 + 1 = - 8 + 1 = - 7 x = - 3 y = ( 4 / 3 ) * ( - 3 ) + 1 = - 12 / 3 + 1 = - 4 + 1 = - 3 x = 6 y = ( 4 / 3 ) * 6 + 1 = 24 / 3 + 1 = 8 + 1 = 9 For plot : In google type : point plotter When you see list of result click on: Graph ...
July 15, 2012

ALGEBRA
The x-intercept of a line is the point at which the line crosses the x axis. ( i.e. where the y value equals 0 ) In this case : - 4 x + 9 * 0 = - 36 - 4 x = - 36 Divide both sides by -4 x = - 36 / - 4 = 9 x - intercept point (9,0) The z-intercept of a line is the point at ...
July 15, 2012

algebra
L = Length W = Width The perimeter of a rectangle P = 2 L + 2 W In this case W = 2 m P = 34 m 34 = 2 L + 2 * 2 34 = 2 L + 4 Subtract 4 for both sides 34 - 4 = 2 L + 4 - 4 30 = 2 L Divide both sides by 2 15 = L L = 15 m
July 14, 2012

Calculus
y = sqrt ( 3 x ) = sqrt ( 3 ) * sqrt ( x ) d y / d x =sqrt ( 3 ) * 1 / 2 sqrt ( x ) d y / d x = ( 1 / 2 ) * sqrt ( 3 / x )
July 12, 2012

Integrated Math 1
If you want to see graph go on: rechneronline.de In blue rectangle type : - x ^ 2 + 25 Set : Range x-axis from - 10 to 10 Range x-axis from - 10 to 40 and click option Draw
July 11, 2012

Integrated Math 1
July 11, 2012

Integrated Math 1
The standard equation of a parabola is : y = a x ^ 2 + bx + c The vertex of a parabola is the point where the parabola crosses its axis. If the coefficient of the x ^ 2 term is positive, the vertex will be the lowest point on the graph, the point at the bottom of the “U&#...
July 11, 2012

math
Rate Sam works : ( 1 job ) / x hrs Rate Denise works : ( 1 job ) / ( x + 2) hrs Rate together : 1 / x + 1 / ( x + 2 ) =
July 11, 2012

TRIG
cos theta = + OR - 1 / sqrt ( 1 + tan ^ 2 theta ) In Quadrant II, cosine are negative so : cos theta = - 1 / sqrt ( 1 + tan ^ 2 theta ) cos theta = - 1 / sqrt [ 1 + ( 3 / 4 ) ^ 2 theta ] cos theta = - 1 / sqrt ( 1 + 9 / 16 ) cos theta = - 1 / sqrt ( 16 / 16 + 9 / 16 ) cos ...
July 11, 2012

algebra
How can a square table have different length and height?
July 11, 2012

Integrated Math 1
- 1 - 6 x ^ 2 - x ^ 3 - ( - 2 - 4 x ^ 2 ) = - 1 - 6 x ^ 2 - x ^ 3 + 2 + 4 x ^ 2 = - x ^ 3 - 2 x ^ 2 + 1 OR 1 - 2 x ^ 2 - x ^ 3 Answer A.
July 11, 2012

Integrated Math 1
- 16 x ^ 2 - x ^ 3 - ( - 2 - 4 x ^ 2 ) = - 16 x ^ 2 - x ^ 3 + 2 + 4 x ^ 2 = - x ^ 3 - 12 x ^ 2 + 2
July 11, 2012

trigonometry
If a central angle theta = 3 pi / 2 then : Circumference of a circle = 2 * r * pi Ful circle have 360 ° = 2 pi radians. Lenght of arc : L = ( theta / 2 pi ) * 2 * r * pi L = theta * r = 60 ( 3 pi / 2 ) * r = 60 Multiply both sides by 2 3 pi * r = 120 Divide both sides by 3...
July 11, 2012

Math
f = frame = 2.5 cm p = dimension of frame p + f = dimension of one side of square Area of a square painting : A = ( p + f ) ^ 2 = 3600 p + f = sqrt ( 3600 ) p + f = 60 p + 2.5 = 60 p = 60 - 2.5 = 57.5 cm
July 11, 2012

Integrated math
Definite integral 1 to 3 ( 3 x ^ 2 - 2 x + 1 ) dx = ( x ^ 3 - x ^ 2 + x ) from 1 to 3 = ( 3 ^ 3 - 3 ^ 2 + 3 ) - ( 1 ^ 3 - 1 ^ 2 + 1 ) = 27 - 9 + 3 - ( 1 - 1 + 1 ) = 21 - 1 = 20
July 11, 2012

math
Domain: The domain of a function is the set of all possible input values which allows the function formula to work.
July 11, 2012

math
Range: The range is the set of all possible output values , which result from using the function formula. In this case when x = 0 2 / x ^ 2 -> infinity. So domain : ( -infinity , 0 ] U [ 0 , infinity ) Or all value of x different of 0
July 11, 2012

math
1 h = 60 min 15 min = 1 / 4 h 17 / ( 1 / 4 ) = 4 * 17 = 68 km / h
July 11, 2012

Trig
sqrt ( 3 ) * csc ( 2 theta ) = - 2 Divide both sides by sqrt ( 3 ) csc ( 2 theta ) = - 2 / sqrt ( 3 ) Take the inverse cosecant of both sides. 2 theta = - pi / 3 and 2 theta = 4 pi / 3 [ Becouse csc ( pi / 3 ) = 2 / sqrt ( 3 ) , and csc ( 4 pi / 3 = 2 / sqrt ( 3 ) ] Divide ...
July 10, 2012

Integrated Math 1
- 3 x ^ 2 + 10 x - 6 = - 3 x ^ 2 - 17 x + 2 Add 3 x ^ 2 + 17 x - 2 to both sides. - 3 x ^ 2 + 3 x ^ 2 + 10 x + 17 x - 6 - 2 = - 3 x ^ 2 + 3 x ^ 2 - 17 x + 17 x + 2 - 2 27 x - 8 = 0 Add 8 to both sides. 27 x - 8 + 8 = 0 + 8 27 x = 8 Divide both sides by 27 x = 8 / 27 when x = 8...
July 8, 2012

MAth
A = 4 pi r ^ 2 A = 28.26 28.26 = 4 pi r ^ 2 28.26 / ( 4 pi ) = r ^ 2 r ^ 2 = 28.26 / ( 4 * 3.14 ) r ^ 2 = 28.26 / 12.56 = 2.25 r = sqrt ( 2.25 ) = 1.5 in Question 2 A = 4 pi r ^ 2 A = 4 * pi * 3.5 ^ 2 A = 4 * 3.14 * 12.25 A = 153.86 in ^ 2 Question 3 V = 4 * pi * r ^ 3 / 3 V...
July 8, 2012

algebra
If your expression mean: 5 * 5 - 35 + 21 - ( - 3 ) * ( - 3 ) * ( - 3 ) then: ( - 3 ) * ( - 3 ) = 9 ( - 3 ) * ( - 3 ) * ( - 3 ) = ( - 3 ) * 9 = - 27 - ( - 3 ) * ( - 3 ) * ( - 3 ) = - ( - 27 ) = 27 5 * 5 - 35 + 21 - ( - 3 ) * ( - 3 ) * ( - 3 ) = 25 - 35 + 21 + 27 = 38
July 7, 2012

math
1 hour = 60 min 1 day = 24 hours = 24 * 60 = 1440 min 1 hour 18 min = 78 min D = Day N = Night D = N + 78 D + N = 1440 min N + 78 + N = 1440 2 N + 78 = 1440 2 N = 1440 - 78 = 1362 N = 1362 / 2 = 681 min D = N + 78 = 681 + 78 = 759 min 12 * 60 = 720 759 - 720 = 39 759 min = 12 ...
July 5, 2012

Math
2 1/2 =2.5 W = 30 ft L = 2.5 * W = 2.5 * 30 = 75 ft
July 4, 2012

Math
10 / ( 1 / 5 ) = 50 50 ft / s 50 * 20 = 1,000 ft
June 28, 2012

Maths - Ant Colony
Interpolation polynomial for first set : ( x ^ 5 - 100 x ^ 4 + 4375 x ^ 3 - 65000 x ^ 2 + 827500 x + 2250000 ) / 37500 Interpolation polynomial for second set : 8 x + 400 ( x ^ 5 - 100 x ^ 4 + 4375 x ^ 3 - 65000 x ^ 2 + 827500 x + 2250000 ) / 37500 = 8 x + 400 Real solution : ...
June 25, 2012

Math
To find relative maxima and minima, first find the critical points (where f´ ( x ) is 0 or doesn´t exist). Then examine each critical point. It is a relative maximum if f´ changes from positive to negative or f" is negative. It is a relative minimum if f...
June 24, 2012

Math
To find relative maxima and minima, first find the critical points (where fŒ is 0 or doesnft exist). Then examine each critical point. It is a relative maximum if fŒ changes from positive to negative or f is negative. It is a relative ...
June 24, 2012

arithmetic
No an = 41 ( n ^ 2 + 157 n + 9442 ) / ( 39680 - 320 n )
June 24, 2012

math
2 x - 3 y = 5 2 * 3 - 3 y = 5 6 - 3 y = 5 Add - 6 to both sides 6 - 6 - 3 y = 5 - 6 - 3 y = - 1 Divide both sides by - 3 y = - 1 / - 3 y = 1 / 3
June 18, 2012

math
3 y = 9 - 2 x Divide both sides by 3 y = 9 / 3 - 2 x / 3 y = 3 - 2 x / 3 y = - ( 2 / 3 ) x + 3
June 18, 2012

math
0.68 * 8 = 5.44 0.68 in = 5 / 8 in to the nearest eight of an inch
June 18, 2012

geometry
Volume of the first cube V1 = h ^ 3 Volume of the second cube V2 = ( 5 h ) ^ 3 = 125 h ^ 3 V1 / V2 = h ^ 3 / ( 125 h ^ 3 ) = 1 / 125
June 18, 2012

Algebra
( 2 x ^ 2 - 5 x + 13 ) - 27 go on: calc101 dot com When page be open in first rectangle tape : 2x^3 - x^2 + 3x -1 In second rectangle type : x + 2 and click option : DO IT
June 17, 2012

math
a n = n ^ 3 1 ^ 3 = 1 2 ^ 3 = 8 3 ^ 3 = 27 4 ^ 3 = 64 5 ^ 3 = 125 6 ^ 3 = 216
June 17, 2012

Algebra
Go on : wolframalpha dot com If your exspression mean : (4/x)-2-(7/x^2)-4 then in rectangle type : solve (4/x)-2-(7/x^2)-4 and click option = If your exspression mean : 4/(x-2)-7/(x^2-4)=1 then in rectangle type : solve 4/(x-2)-7/(x^2-4)=1 and click option = After few secounds...
June 14, 2012

Algebra II (Exponents)
x ^ - 6 = 1 / x^ 6 third root of ( - 8 ) = - 2 ( -8 x ^ - 6 y ^ 15 ) ^ ( 1 /3 ) = third root of ( - 8 y ^ 15 / x ^ 6 ) = third root of ( - 8 ) * third root of ( x ^ 15 ) / third root of ( x ^ 6 ) = - 2 y ^ 5 / x ^ 2
June 11, 2012

Algebra II (Exponents)
( -1728 ) ^ ( 1 / 3 ) = third root of ( - 1728 ) = third root of ( - 1 ) * third root of ( 1728 ) = - 1 * 12 = - 12
June 11, 2012

precalculus/trigonometry
For x = - 2 y = ( - 2 ) ^ 2 = 4 ( x1 = - 2 , y1 = 4 ) For x = 4 y = 4 ^ 2 = 16 ( x2 = 4 , y2 = 16 ) The line through two distinct points (x1, y1) and (x2, y2) is given by y = y1 + [ ( y2 - y1 ) / ( x2 - x1 ) ] * ( x - x1 ) In your case : x1 = - 2 y1 = 4 x2 = 4 y2 = 16 y = y1...
June 10, 2012

Intermediate Algebra
A = Area L = Length W = Width A = 4 x ^ 2 + 19 x + 12 L = 4 x + 3 A = L * W W = A / L W = ( 4 x ^ 2 + 19 x + 12 ) / ( 4 x + 3 ) W = x + 4 P.S If you don't know how to divide that two exspression go on: calc101 dot com When page be open in first rectangle tape : 4 x ^ 2 + ...
June 8, 2012

June 7, 2012

In google type: wolfram alpha When you see lis of results click on: Wolfram Alpha:Computational Knowledge Engine When page be open in rectangle type: integrate sec^3(x)tan^3(x) dx and click option = After few secons you will see result. Then click option Show steps
June 7, 2012

Math
7 / ( x - 4 ) = 2 Multiply both sides by ( x - 4 ) 7 = 2 * ( x - 4 ) 7 = 2 x - 8 Add 8 to both sides 7 + 8 = 2 x - 8 + 8 15 = 2 x Divide both sides by 2 15 / 2 = x x = 15 / 2 = 7.5
June 6, 2012

math
4 * 1,500 + 2 * 120 * 12 = 6,000 + 2,880 = 8,880 \$
June 5, 2012

math
39 * 71 - 30 * 50 = 2769 - 1500 = 1269 yd ^ 2
June 4, 2012

math
A. Product : 1 * 1 = 1 Sum : 1 + 1 = 2 B. Product : 0 * 2 = 0 Sum : 0 + 2 = 2 C. Product : 1 * 0 = 0 Sum : 1 + 0 = 1 D. Product : 2 * 2 = 4 Sum : 2 + 2 = 4 ANSWER D.
June 2, 2012

GEOMETRY
June 2, 2012

math
x1 + x2 + x3 = 86 + 92 + 94 = 272 ( x1 + x2 + x3 + x4 ) / 4 = 90 ( 272 + x4 ) / 4 = 90 Multiply both sides by 4 272 + x4 = 90 * 4 272 + x4 = 360 x4 = 360 - 272 = 88
June 2, 2012

Math
L = length of board piece a = length of first piece b = length of second ( shorter ) piece a = 2 b - 3 L = 18 = a + b = 2 b - 3 + b = 3 b - 3 3 b - 3 = 18 Add 3 to both sides 3 b - 3 + 3 = 18 + 3 3 b = 21 Divide both sides by 3 3 b / 3 = 21 / 3 b = 7 ft a = 2 b - 3 a = 2 * 7...
June 1, 2012

Math
The standard equation of a circle with center C ( h , k ) and radius r is as follows: ( x - h )^ 2 + ( y - k )^ 2 = r ^ 2 In your case r = sqrt( 25 ) = + OR - 5 Length can't be negative so r = 5
May 31, 2012

math
3 pi / 2 = 270 ° sin ( 3 pi / 2 ) = sin 270 ° = - 1 cos ( 3 pi / 2 ) = cos 270 ° = 0 cos ( A - B ) = cos A cos B + sin A sin B In this case : cos ( x - 3 pi / 2 ) = cos ( x ) * cos ( 3 pi / 2 ) + sin ( x ) * sin ( 3 pi / 2 ) = cos ( x ) * 0 + sin ( x ) * ( - 1 ) = ...
May 29, 2012

math
( x 1 + x 2 + x 3 + x 4 + x 5 ) / 5 = 89 Multiply both sides by 5 x 1 + x 2 + x 3 + x 4 + x 5 = 89 * 5 = 445 ( x 1 + x 2 + x 3 + x 4 + x 5 + x 6 ) / 6 = 90 ( 445 + x 6 ) / 6 = 90 Multiply both sides by 6 445 + x 6 = 6 * 90 = 540 x 6 = 540 - 445 = 95
May 29, 2012

pre algebra check
( 156 / 130 ) * 100 % = 1.2 * 100 % = 120 %
May 29, 2012

pre algebra
10.5 % = 10.5 / 100 = 0.105 0.105 * 250 = 26.25
May 29, 2012

pre algebra
100 % - 20 % = 80 % 80 % = 80 / 100 = 0.8 14 \$ / 0.8 = 17.5 \$
May 29, 2012

calculus
If (x+7)dx/x^2+14x+55 mean ( x + 7 ) dx / ( x ^ 2 + 14 x + 55 ) then substitute : u = x ^ 2 + 14 x + 5 d u = ( 2 x + 14 ) dx = 2 ( x + 7 ) d x Divide both sides by 2 du / 2 = ( x + 7 ) d x ( x + 7 ) d x = d u / 2 integral of [ ( x + 7 ) dx / ( x ^ 2 + 14 x + 55 ) ] = integral ...
May 29, 2012

V = Volume A = Area of trangle V = A * h A = s ^ 2 * sqrt ( 3 ) / 4 where s = length of equilateral triangle sides A = 6 ^ 2 * sqrt ( 3 ) / 4 A = 36 * sqrt ( 3 ) / 4 A = 4 * 9 * sqrt ( 3 ) / 4 A = 9 * sqrt ( 3 ) A = 9 * 1.73025 A = 15.58845 mm ^ 2 V = A * h V = 15.58845 * 8 .4...
May 28, 2012

Algebra
Another way : x + 8 / x = - 9 Multiply both sides by x x ^ 2 + 8 = - 9 x Add 9 x to both sides x ^ 2 + 8 + 9 x = - 9 x + 9 x x ^ 2 + 9 x + 8 = 0 In google type: quadratic equation online When you see list of results click on: Free Online Quadratic Equation Solver:Solve by ...
May 28, 2012

Math
x ^ 2 + y ^ 2 - 6 x - 8 y + 25 = 36 Equation of a circle in standard form : ( x - h ) ^ 2 + ( y - k ) ^ 2 = r ^ 2 x ^ 2 + y ^ 2 - 6 x - 8 y + 25 = 36 x ^ 2 - 6 x + y ^ 2 - 8 y + 25 = 36 ( x ^ 2 - 6 x ) + ( y ^ 2 - 8 y ) + 25 = 36 The process involves completing the square ...
May 27, 2012

Algebra II
The General Equation for a Conic Sections: A x ^ 2 + B x y + C y ^ 2 + D x + E y + F = 0 In this case: x ^ 2 - 4 y ^ 2 - 4 x - 8 y = 36 Subtract 36 to both sides x ^ 2 - 4 y ^ 2 - 4 x - 8 y - 36 = 0 1 * x ^ 2 + 0 * B x y - 4 * y ^ 2 - 4 * x - 8 * y - 36 = 0 A = 1 B = 0 C = - 4...
May 27, 2012

Algebra
w = width l = length A = Area l = w + 8 A = l * w A = ( w + 8 ) * w = 48 w ^ 2 + 8 w = 48 Subtract 48 to both sides w ^ 2 + 8 w - 48 = 48 - 48 w ^ 2 + 8 w - 48 = 0 The exact solutions are : w = 4 and w = - 12 Width can't be negative so : w = 4 cm l = w + 8 l = 4 + 8 = 12 ...
May 26, 2012

Algebra
( 2 x - 1 ) ^ 2 = 25 Take the square root of both sidea 2 x - 1 = + OR - 5 Add 1 to both sides 2 x - 1 + 1 = + OR - 5 + 1 2 x = + OR - 5 + 1 Divide both sides by 2 x = ( + OR - 5 + 1 ) / 2 x 1 = ( 5 + 1 ) / 2 = 6 / 2 = 3 x 2 = ( - 5 + 1 ) / 2 = - 4 / 2 = - 2
May 26, 2012

Algebra II
7 - 2 = 5 ( 7 − 2 ) ÷ 5 = 5 / 5 = 1
May 25, 2012

Math
Equations of a straight line : y = m x + b Where : m = slope b = the y intercept ( where the line crosses the y axis ) Parallel lines have the same slope. In this case m = 1 / 3 y = ( 1 / 3 ) x + b x = - 9 y = 5 5 = ( 1 / 3 ) ( - 9 ) + b 5 = - 3 + b Add 3 to both sides 5 + 3...
May 25, 2012

math
3 * 10 1 / 2 = 3 * 21 / 2 = 63 / 2 = 62 / 2 + 1 / 2 = 31 1 / 2
May 24, 2012

Algebra; Help immediately.
Sorry my tipfeler. Answer is A h = 160 t - 16 t ^ 2 400 = 160 t - 16 t ^ 2 160 t - 16 t ^ 2 = 400
May 24, 2012

Algebra; Help immediately.
h = height t = time h = 160 t - 16 t ^ 2 400 = 160 t - 16 t ^ 23 160 t - 16 t ^ 23 = 400
May 24, 2012

Integral Calculus
In google type: wolfram alpha When you see list of results click on: Wolfram Alpha:Computational Knowledge Engine When page be open in rectangle type: integrate x*arctan(x)dx and click option = After few secons you will see result. Then click option : Show steps
May 24, 2012

Calculus
a = first number b = second number a * b = 48 Divide both sides by a b = 48 / a S = the sum of one of the numbers and the cube of the other number S = a + b ^ 3 S = a + ( 48 / a ) ^ 3 S = a + 110,592 / a ^ 3 S = a + 110,592 * a ^ - 3 First derivaton : d S / d a = 1 - 3 * 110,...
May 24, 2012

Alg 2
Hyperbola Equation of hyperbola : ( x - h ) ^ 2 / a ^ 2 - ( y - k ) ^ 2 / b ^ 2 = 1 In this case : ( x + 3 ) ^ 2 / 16 - ( y - 5 ) ^ 2/ 64 = 1 [ x - ( - 3 ) ] ^ 2 / 4 ^ 2 - ( y - 5 ) ^ 2 / 8 ^ 2 = 1 h = - 3 k = 5 a = 4 b = 8
May 24, 2012

algebra
- 3 ( 5 x + 6 ) = 57 - 3 * 5 x - 3 * 6 = 57 - 15 x - 18 = 57 Add 18 to both sides - 15 x - 18 + 18 = 57 + 18 - 15 x = 75 Sivide both sides by - 15 x = 75 / - 15 x = 5 * 15 / - 15 x = - 5
May 21, 2012

arithmetic
Sorry correction. 100 * 100 * 100 = 1,000,000 1 m = 100 cm 1 m ^ 3 = 100 * 100 * 100 = 1,000,000 cm ^ 3 1.5 m ^ 3 = 1,500,000 cm ^ 3 1,500,000 candies
May 21, 2012

arithmetic
1 m = 100 cm 1 m ^ 3 = 100,000 cm ^ 3 1.5 m ^ 3 = 150,000 cm ^ 3 150,000 candies
May 21, 2012