Friday
July 25, 2014

Posts by Bosnian


Total # Posts: 1,681

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

math
1 h = 60 min 60 / 4 = 15 15 * 52 = 780 miles / hour OR 52 / 4 = 13 miles / min

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 <...

trig
sin ( x ) * tan ( x ) = sin ( x ) * sin ( x ) / cos ( x ) = sin ^ 2 ( x ) / cos ( x )

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 ) / s...

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

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 ...

6th Grade Math
All your answer is correct.

trig
x = 60 ° cos 60 ° = 1 / 2

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

Match Check
1 /0.125 = 80

ALGEBRA
Also you can in google type: half-life equation and click : en.wikipedia

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

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

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

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.

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

maths
x / 20 = 0.6 Multiply both sides by 20 20 x / 20 = 0.6 * 20 x = 12

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 ...

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

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

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 n...

Math
CORRECTION: ( 2 x ^ 3 ) ^ ( - 3 ) = 2 ^ ( - 3 ) * x ^ [ 3 * ( - 3 ) ] = 2 ^ ( - 3 ) * x ^ ( - 9 ) 1 / ( 2 ^ 3 * x ^ 9 ) = 1 / 8 x ^ 9

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 ...

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

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"

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 )

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 / 1...

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

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

precalc!!!!!
Go on calc 101 dot com When page be open click option : long division

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.

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 =...

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

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 ?

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 =...

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

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...

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

MAT/116
- 1 + ( - 6) = - 1 - 6 = -7

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

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 f...

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 6...

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

GEOMETRY
start -> Programs -> Accessories -> Calculator -> View -> Sceintific 4 ° 35 ' 19 "

GEOMETRY
81 ° 47 ' 12 "

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

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

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

Math
2 ( 4 y + 5 z ) - 10 z = 2 * 4 y + 2 * 5 z - 10 z = 8 y + 10 z - 10 z = 8 y

math lit
2 and half hours =120+30=150 min 2/150 = 1 exam/75 min

Help! Math
15 / 20 = 3 * 5 / ( 4 * 5 ) = 3 / 4 = 0.75 3 / 4 6 / 8 9 / 12 12 / 16 18 / 24

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 ( 1...

Math - HELP !
31 students are in the drama club.

Math - HELP !
62 % = 62 / 100 62 * 50 / 100 = 3100 / 100 = 31 Proof: ( 31 / 50 ) * 100 % = 3100 % / 50 = 62 %

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 %

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

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

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 : Dividi...

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

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 % = ...

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

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

math
5 ^ 2 = 5 * 5 = 25 15 * ( 80 + 170 ) / 5 ^ 2 = 15 * ( 80 + 170 ) / 25 = 15 * 250 / 25 = 15 * 10 = 150 2 ^ 4 = 2 * 2 * 2 * 2 = 16 2 ^ 7 = 2 * 2 * 2 * 2 * 2 * 2 * 2 = 128 160 / 2 ^ 4 + 2 ^ 7 - 75 = 160 / 16 + 128 - 75 = 10 + 128 - 75 = 63

trig and geometry
A ) tan ( 42 ° ) = H / 75 H = 75 tan 42 ° H = 75 * 0.9004 H = 67.53 m B ) tan ( theta ) = H / ( 75 + 30 ) tan ( theta ) = H / 105 tan ( theta ) = 67.53 / 105 tan ( theta ) = 0.643143 theta = 32 ° 44 ' 49 "

ap
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...

math
The center placed in the point (0,0) radius = sqrt ( 36 ) = 6

math
a n = - 2 ( n - 3 ) n = 19 a 19 = - 2 ( 19 - 3 ) a 19 = - 2 * 16 a 19 = - 32

math please
If g ( c ) = 19 - c 2 mean g ( c ) = 19 - c ^ 2 then g ( c ) = 19 - 4 ^ 2 g ( c ) = 19 - 16 g ( c ) = 3

math
32 77 - 64 = 13 64 - 53 = 11 53 - 44 = 9 44 - 37 = 7 37 - 32 = 5

Calculus Help!
Go on : calc101 dot com When page be open click option : derivatives When page be open in rectangle type: 8 sin [ cos [ x ^ 6 ] ] and click option : DO IT You will see solution step by step Then in rectangle type : cos [ sin [ x ^ 2 ] ] and click option : DO IT

calculus
log ( a ^ n ) = n log ( a ) x log ( 5 ) = log ( 100 ) Divide both sides by log ( 5 ) x = log ( 100 ) / log ( 5 ) x = 2.8613531 5 ^ 2.8613531 = 100

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 ) si...

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...

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 )

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

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 -...

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

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 Formul...

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

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

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

Math
( - 2 q ^ 2 + q + 3 ) - 5 ( q ^ 2 + 2 q - 1 ) = - 7 q ^ 2 - 9 q + 8

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 ...

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 (...

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

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.

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

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

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 e...

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 so...

algebra
w = the number of WHITE ribbions

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 +...

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

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 (...

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

Math
a x ^ 2 + b x + c = 0

Math
My answer is also numbers of girls g = 25

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 /...

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 ex...

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