# Posts by Bosnian

Total # Posts: 2,471

maths
504347 / 317 = 1591

maths
a = first number b = second number b = a + 9 a + b = 25 a + a + 9 = 25 2 a + 9 = 25 Subtract 9 to both sides 2 a + 9 - 9 = 25 - 9 2 a = 16 Divide both sides by 2 a = 16 / 2 = 8 b = a + 9 = 8 + 9 = 17 First number = 8 Second number 17

math
My big typo!!! xn - yn = zn Now: n = 8 xn - yn = zn x8 - y8 = z8 ( 1 / 9 ) [ ( 100 ^ n ) - 1 ] - ( 2 / 9 ) (10 ^ n - 1) = 33,333,333 ^ 2 ( 1 / 9 ) [ ( 100 ^ 8 ) - 1 ] - ( 2 / 9 ) (10 ^ 8 - 1) = 33,333,333 ^ 2 ( 1 / 9 ) ( 10,000,000,000,000,000 - 1 ] - ( 2 / 9 ) ( 100,000,000...

math
Write your problem as: xn + yn = zn 11 , 1111 , 111111 x1 = 11 x1 = 99 / 9 x1 = ( 100 - 1 ) / 9 x1 = ( 100 ^ 1 - 1 ) / 9 x2 = 1111 x2 = 9999 / 9 x2 = ( 10000 - 1 ) / 9 x2 = ( 100 ^ 2 - 1 ) / 9 x3 = 111111 x2 = 999999 / 9 x2 = ( 1000000 - 1 ) / 9 x2 = ( 100 ^ 3 - 1 ) / 9 etc. ...

Maths
If your question mean: lim (3n²-5n+4) / (4n²+7n-1) n?? Then: Divide numerator and denominator by n² lim n?? (3 n²/n²- 5n/n²+4/n²)/(4n²/n²+7n/n²-1/n²)= lim n?? (3-5/n+4/n²) / (4+7/n-1/n²) = (Now Quotient Rule) lim...

Math
Your answer is correct. b = boys g = girls b + g = 12 + 18 = 30 Boys: b = 12 / 30 = 2 * 2 * 3 / 2 * 3 * 5 = 2 / 5

Math
1 / 2 divided by 6 = 1 / 12 1 / 12 is less than 1

algebra
x² - 8x + 15 = x² - 5x - 3 x + 15 = x ? x - 5 ? x - 3 ? x + 15 = x ? x - 5 ? x - 3 ? x - 3 ? ( - 5 ) = x ( x - 5 ) - 3 ( x - 5 ) = ( x - 5 ) ( x - 3 )

logs
Your answer is correct, but you also can write: log ( x ^ n ) = n ? log ( x ) 0.5 = 1 / 2 = 1 / 2 ^ 1 = 2 ^ ( - 1 ) log ( 0.5 ) = log [ 2 ^ ( - 1 ) ] = ( - 1 ) * log ( 2 ) = - log ( 2 ) log ( 0.91 ^ t ) = t ? log ( 0.91 ) 0.5 = 0.91 ^ t log ( 0.5 ) = log ( 0.91 ^ t ) - log ( 2...

Math, factoring
For x = 3 x ^ 4 + a x ^ 3 + a x ^ 2 + 11 x + b = 0 Put x = 3 in this equation: 3 ^ 4 + a * 3 ^ 3 + a * 3 ^ 2 + 11 * 3 + b = 0 81 + 27 a + 9 a + 33 + b = 0 36 a + b + 114 = 0 For x = - 2 x ^ 4 + a x ^ 3 + a x ^ 2 + 11 x + b = 0 Put x = - 2 in this equation: ( - 2 ) ^ 4 + a...

math
3 x² – 2 = 5 x 3 x² – 2 - 5 x = 0 3 x² - 5 x - 2 = 0 a x² + b x + c = 0 in this case: a = 3 , b = - 5 , c = - 2 D = b² - 4 ? a ? c D = ( - 5 )² - 4 ? 3 ? ( - 2 ) D = 25 + 4 ? 3 ? 2 D = 25 + 24 D = 49 If D > 0, the equation has 2 real ...

math
c / 5 + 1 = 9 Subtract 1 to both sides c / 5 + 1 - 1 = 9 - 1 c / 5 = 8 Multiply both sides by 5 c = 8 * 5 c = 40

MAths
My typo. 180° - x = 360° - 4 x Add 4 x to both sides 180° - x + 4 x = 360° - 4 x + 4 x

MAths
x = the angle Complement: 90° - x Supplement: 180° - x 180° - x = 4 ? ( 90° - x ) 180° - x = 4 ? 90° - 4 ? x 180° - x = 360° - 4 x Add 4 x to both sides 180° - x + 4 x = 360° - 4 x - 4 x 180° + 3 x = 360° Subtract 180° to ...

maths --plse help me..
a = the greater number b = the smaller number When the greater of the two numbers increased by 1 divides the sum of the numbers the result is 3 / 2 mean : ( a + 1 ) / ( a + b ) = 3 / 2 When the difference of these numbers is divide by the smaller ,the result is 1 / 2 mean: ( a...

Math
30 / 5 = 6 20 / 5 = 4 6 ? 4 = 24 24 squares can be cut from this paper.

math
23467 + 765446 + 98656 = 887569 887600 Rounded to the nearest hundred.

math
489967234 + 500101234 + 657999812 = 1648068280 To round numbers to the nearest ten thousand, make the numbers whose last four digits are 0001 through 4999 into the next lower number that ends in 0000. For example 54424 rounded to the nearest ten thousand would be 50000. ...

Math
The n-th term of a geometric sequence with initial value a1 and common ratio r is given by: an = a1 ? r ^ ( n - 1 ) a5 = a1 ? r ^ ( 5 - 1 ) a5 = a1 ? r ^ 4 a5 = 8 ? ( - 5 ) ^ 4 a5 = 8 ? 625 a5 = 5000

algebra plz help!!
t ^ 4 - 5 q t ^ 2 - 24 q ^ 2 = t ^ 4 - 8 q t ^ 2 + 3 q t ^ 2 - 24 q ^ 2 = t ^ 4 - 8 q t ^ 2 + 3 q t ^ 2 - 24 q ^ 2 = ( - 24 q ^ 2 + 3 q t ^ 2 ) + ( - 8 q t ^ 2 + t ^ 2 * t ^ 2 ) = 3 q ? ( - 8 q + t ^ 2 ) + t ^ 2 ? ( - 8 q + t ^ 2 ) = ( - 8 q + t ^ 2 ) ? 3 q + ( - 8 q + t ^ 2...

math
1 week = 7 days 1 week = 7 days ? 24 h = 168 h 1 m³ = 1000 ? 1 ? = 1 / 1000 m³ = 0.001 m³ 10 ? = 10 / 1000 m³ = 0.01 m³ 168 ? 10 ? = 1680 ? The amount of water lost in one week = 1680 ? 1680 ? = 1680 / 1000 =1.68 m³ V = volume of water lost = 1.68...

algebra expression (math)
x = original number x + 5 = 6 * x x + 5 = 6 x Subtract x to both sides x + 5 - x = 6 x - x 5 = 5 x Divide both sides by 5 1 = x x = 1

Math
OR 3 / 4 = 0.75 18 / 0.75 = 24

Math
x = mumbers of games ( 3 / 4 ) x = 18 3 x / 4 = 18 3 x = 4 * 18 = 72 x = 72 / 3 = 24

maths
tan x = sin x / cos x sec x - tan x / sin x = 1 / cos x - ( sin x / cos x ) / sin x = 1 / cos x - sin x / cos x * sin x = 1 / cos x - 1 / cos x = 0 sec x - tan x / sin x is always zero, regardless value of cos x

Math
cos² x = 1 - sin² x cos x = ± ? ( 1 - sin² x ) sec x = 1 / cos x sec x = 1 / ± ? ( 1 - sin² x ) 4 / 3 = 1 / ± ? ( 1 - sin² x ) Take reciprocal value of both sides 3 / 4 = ± ? ( 1 - sin² x ) Raise both sides to on the ...

Algebra
The first 40 hours are paid at \$18/hour. For any amount of time over that, the rate is 18 * 1.5 = \$27 So: P(t) = 18 * 40 + 27 * ( t - 40 ) = 720 + 27 t - 27 * 40 = 720 + 27 t - 1080 = 27 t - 360

Math
You're welcome.

Math
The geometric mean is the nth root of the product of n numbers. a7 = ? ( 75 * 48 ) a7 = ?3600 = 60

Math
72, 12 , 2.. geometric sequence. first term a = 72 common ratio r = 1 / 6 ? 0 to infinity = a / ( 1 - r ) = 72 / ( 1 - 1 / 6 ) = 72 / ( 6 / 6 - 1 / 6 ) = 72 / ( 5 / 6 ) = 72 * 6 / 5 = 432 / 5 = 86.4

Math
21, 15, 9, 3, . . . 15 - 21 = - 6 9 - 15 = - 6 3 - 9 = - 6 This is an arithmetic sequences. First term a1 = 21 Common difference: d = - 6 nth term of the arithmetic sequence: an = a1 + ( n - 1 ) ? d In this case n = 29 a29 = 21 + ( 29 - 1 ) ? ( - 6 ) a29 = 21 + 28 ? ( - 6 ) ...

Geometry
The standard form equation of a circle: ( x - a ) ^ 2 + ( y - b ) ^ 2 = r ^ 2 a and b are the x and y coordinates of the center of the circle. r = the radius of the circle. In this case: a = - 4 , b = - 3 [ x - ( - 4 ) ] ^ 2 + [ y - ( - 3 ) ] ^ 2 = r ^ 2 ( x + 4 ) ^ 2 + ( y + ...

Math
g = grandfathers age d = granddaughter age You have two conditions for a grandfather: g = 10 d g = d + 54 Now: g = g 10 d = d + 54 Subtract d to both sides 10 d - d = d + 54 - d 9 d = 54 Divide both sides by 9 d = 54 / 9 = 6 yrs g = 10 d = 10 * 6 = 60 yrs OR g = d + 54 g = 6...

Maths
1 / x

math
If delta SIN=12/13 mean: sin ? = 12 / 13 Then: cos ? = ± ? ( 1 - sin² ? ) cos ? = ± ? [ 1 - ( 12 / 13 )² ] cos ? = ± ? [ 1 - ( 144 / 169 ) ] cos ? = ± ? ( 169 / 169 - 144 / 169 ) cos ? = ± ? ( 25 / 169 ) cos ? = ± 5 / 13 tan...

Pre-calculus
If your expressiom mean: y = 2 * 10 ^ ( - 44 ) * e ^ ( 0.055 x ) = 50000 then: 2 * 10 ^ ( - 44 ) * e ^ ( 0.055 x ) = 5 * 10 ^ 4 Divide both sides by 2 * 10 ^ ( - 44 ) e ^ ( 0.055 x ) = 5 * 10 ^ 4 / 2 * 10 ^ ( - 44 ) e ^ ( 0.055 x ) = ( 5 / 2 ) * 10 ^ 4 / 10 ^ ( - 44 ) e ^ ( 0....

Math
An irrational number is a real number that cannot be written as a simple fraction. ?150 = ? ( 25 * 6 ) = ?25 * ?6 = 5 ?6 ?6 cannot be written as a simple fraction so ?150 = 5 ?6 is an irrational number ?441 = ? (21^2 ) = 21 ?200 = ? (100 * 2 ) = ?100 ?2 = 10 ?2 ?2 cannot be ...

math
m + 2 n = 3 Subtract 2 n to both sides m + 2 n - 2 n = 3 - 2 n m = 3 - 2 n Put this value in equation 2 m + n = 0 2 ( 3 - 2 n ) + n = 0 2 * 3 - 2 * 2 n + n = 0 6 - 4 n + n = 0 6 - 3 n = 0 Add 3 n to both sides 6 - 3 n + 3 n = 0 + 3 n 6 = 3 n Divide both sides by 3 6 / 3 = 3 n...

geometry
r = d / 2 r = 4.6 / 2 r = 2.3 m r ^ 2 = 2.3 ^ 2 r ^ 2 = 5.29 A(210°) = 7 * r ^ 2 ? ? / 12 A(210°) = 7 * 5.29 ? ? / 12 A(210°) = 37.03 ? ? / 12

geometry
If your quesions refers to circle then: Area of a circle: A = r ^ 2 * ? 210 ° / 360 ° = 2 * 3 * 5 * 7 / 2 ^ 3 * 3 ^ 2 * 5 = 7 / 2 ^ 2 * 3 = 7 / 4 * 3 = 7 / 12 A(210°) = r ^ 2 ? ? * 7 / 12 A(210°) = 7 * r ^ 2 ? ? / 12

Algebra2
Your answer is correct. cos ? - tan ? * cos ? = 0 cos ? - sin ?/cos ? * cos ? = 0 cos ? - sin ? = 0 cos ? = sin ? sin ? = cos ? In interval: 0 < ? < 2 ? sin ? = cos ? for ? = ? / 4 and ? = 5 ? / 4 By the way this is trigonometry, not algebra.

Maths
If he saved 1 / 4 of money, he has: 1 - 1 / 4 = 4 / 4 - 1 / 4 = 3 / 4 of a sum of money. a) 4 / 9 of 3 / 4 = ( 4 / 9 ) * ( 3 / 4 ) = 4 * 3 / 9 * 4 = 12 / 36 = 12 / 12 * 3 = 1 / 3 He spend 1 / 3 money on suitcase. b) 3 / 4 - 1 / 3 = 3 * 3 / 4 * 3 - 4 * 1 / 4 * 3 = 9 / 12 - 4 / ...

Algebra
L = W + 5 H = W + 2 V = L * W * H V = ( W + 5 ) * W * ( W + 2 ) V = ( W + 5 ) * ( W + 2 ) * W V = ( W * W + 5 * W + 2 * W + 2 * 5 ) V = ( W ^ 2 + 5 W + 2 W + 10 ) * W V = ( W ^ 2 + 7 W + 10 ) * W V = W ^ 2 * W + 7 W * W + 10 * W V = W ^ 3 + 7 W ^ 2 + 10 W

Math
2 2/4 = 2 1/2 = 2.5 1/4 =0.25 2.5 / 0.25 = 10

Math
Correction. Sorry my mistake. 2 l + 10 l = 12 l 2 l / 12 l = 2 / 2 * 6 = 1 / 6

Math
1 l + 10 l = 11 l 1 l / 11 l = 1 / 11

math
LCM = 468 Becouse: The prime factorisation of 9 is: 3 * 3 = 3 ^ 2 The prime factorisation of 18 is: 2 * 9 = 2 * 3 ^ 2 The prime factorisation of 52 is: 4 * 13 = 2 ^ 2 * 13 2 : two occurrences 3 : two occurrences 13 : one occurrence LCM = 2 * 2 * 3 * 3 * 13 = 468 GCF = 1 ...

Algebra
ln [ nth root ( x ) ] = ln ( x ) / n ln ?4 = ln ( 4 ) / 2 OR ln [ x ^ n )= n * ln ( x ) ?4 = 4 ^ ( 1 / 2 ) ln [ 4 ^ ( 1 / 2 ) ] = ( 1 / 2 ) * ln ( 4 ) = ln ( 4 ) / 2

Math
In google type: inverse matrix calculator When you see results click on: Inverse Matrix Calculator - Matrix Reshish Set your matrix and click option Calculate then click option: Show solution You will see solution step-by step

math
L = W + 4 P = 2 W + 2 L = 2 ( W + L ) = 48 2 ( W + W + 4 ) = 48 2 ( 2 W + 4 ) = 48 Divide both sides by 2 2 W + 4 = 24 Subtract 4 to both sides 2 W + 4 - 4 = 24 - 4 2 W = 20 Divide both sides by 2 W = 10 in L = W + 4 = 10 + 4 = 14 in A = L * W = 10 * 14 = 140 in ^ 2

Math
- 21.2 - ( - 7.4 ) = - 21.2 + 7.4 = - 13.8 - 35 - ( - 21.2 ) = - 35 + 21.2 = - 13.8 - 48.8 - ( - 35 ) = - 48.8 + 35 = - 13.8 - 62.6 - ( - 48.8 ) = - 62.6 + 48 = - 13.8 an = a(n-1)- 13.8

Math
What is dg?

math
a = first number b = second number You have conditions: a + b = 31 and a - b = 7 Add the two equations together to eliminate b from the system. a + b = 31 + a - b = 7 ________ a + a + b + ( - b ) = 31 + 7 2 a + b - b = 38 2 a + 0 = 38 2 a = 38 Divide both sides by 2 a = 38 / 2...

math trignometry
You also can write this in simplified form: sin ( x / 2 ) = ? [ ( 4 + ?15 ) / 4 * 2 ] sin ( x / 2 ) = ? ( 4 + ?15 ) / ? ( 4 * 2 ) sin ( x / 2 ) = ? ( 4 + ?15 ) / ( ?4 * ?2 ) sin ( x / 2 ) = ? ( 4 + ?15 ) / ( 2 * ?2 ) sin ( x / 2 ) = ? ( 4 + ?15 ) / 2 ?2 cos ( x / 2 ) = ? [ ( 4...

math trignometry
sin x = 1 / 4 cos x = ± ? ( 1 - sin ^ 2 x ) In II quadrant cosine is negative so: cos x = - ? ( 1 - sin ^ 2 x ) cos x = - ? [ 1 - (1 / 4 ) ^ 2 ] cos x = - ? [ 1 - (1 / 16 ) ] cos x = - ? [ 16 / 16 - (1 / 16 ) ] cos x = - ? [ ( 16 - 1 ) / 16 ) ] cos x = - ? ( 15 / 16 ) ...

college algebra
If The middle number is 2 3 the largest. mean: The middle number is 2 / 3 the largest. then: a = smalest number b = middle number c = largest number a = c / 2 b = ( 2 / 3 ) c a + b + c = 104 c / 2 + ( 2 / 3 ) c + c = 104 3 c / 6 + 4 c / 6 + 6 c / 6 = 104 13 c / 6 = 104 ...

math
a1 is the initial term of an arithmetic progression. The common difference of successive members is d. The nth term of an arithmetic progression. an = a1 + ( n - 1 ) d In this case: n = 6 a6 = a1 + ( 6 - 1 ) d = 37 a1 + 5 d = 37 The sum of the n terms of an arithmetic is: Sn...

Calculus
If your expression mean: x - 12 * ?( x + 1 ) - 12 then: x - 12 * ?( x + 1 ) - 12 = x - 12 * ( x + 1 ) ^ ( 1 / 3 ) - 12 If h' (x) = 0 h (x) has a local extrema ( maximum or minimum ) In this case: h' (x) = 1 - 12 * ( 1 / 3 ) ( x + 1 ) ^ ( 1 / 3 - 1 ) = 1 - 12 / 3 ( x + ...

algebra
If your expression mean: [ ( v ^ 2 + 6 v + 8 ) / ( v ^ 2 + v -12 ) ] / [ ( v + 2 ) / ( 2 v - 6 ) ] then: [ ( v ^ 2 + 6 v + 8 ) / ( v ^ 2 + v -12 ) ] / [ ( v + 2 ) / ( 2 v - 6 ) ] = ( v ^ 2 + 6 v + 8 ) * ( 2 v - 6 ) / [ ( v ^ 2 + v -12 ) * ( v + 2 ) ] = ( 2 v * v ^ 2 + 2 v * 6 ...

algebra
( 8 b ^ 3 - 6 ) / ( 2 b - 1 ) = 4 b ^ 2 + 2 b + 1 - 5 / ( 2 b - 1 )

MATH
20,000 = 2 * 10 ^ 4 0.24 = 2.4 * 10 ^ - 2 20,000 * 0.024 = 2 * 10 ^ 4 * 2.4 * 10 ^ - 2 = 2 * 2.4 * 10 ^ 4 * 10 ^ - 2 = 4.8 * 10 ^ 4 * 10 ^ - 2 = 4.8 * 10 ^ [ 4 + ( - 2 ) ] = 4.8 * 10 ^ ( 4 - 2 ) = 4.8 * 10 ^ 2

math
1000 = 10 ^ 3 8000 = 8 * 10 ^ 3 3.25 * 10 ^ - 22 * 8 * 10 ^ 3 = 3.25 * 8 * 10 ^ - 22 * 10 ^ 3 = 26 * 10 ^ - 22 * 10 ^ 3 = 26 * 10 ^ ( - 22 + 3 ) = 26 * 10 ^ ( - 19 ) = 2.6 * 10 * 10 ^ ( - 19 ) = 2.6 * 10 ^ 1 * 10 ^ ( - 19 ) = 2.6 * 10 ^ ( - 19 + 1 ) = 2.6 * 10 ^ - 18

algebra
5 c ^ 2 - 24 c d - 5 d ^ 2 Rewrite - 24 c d as - 25 c d + c d Now: 5 c ^ 2 - 24 c d - 5 d ^ 2 = 5 c ^ 2 - 25 c d + c d - 5 d ^ 2 = 5 c ^ 2 + c d - 25 c d - 5 d ^ 2 = 5 c ^ 2 + c d - ( 25 c d + 5 d ^ 2 ) = c ( 5 c + d ) - 5 d ( 5 c + d ) = ( 5 c + d ) ( c - 5 d ) Your solution ...

trigonometry
cos x = 4 / 5 sin x = ±? ( 1 - sin^2 x ) The angles which lie between 0° and 90° are lie in the first quadrant. In the first quadrant sin x is positive so: sin x = ? ( 1 - sin^2 x ) sin x = ? ( 1 - sin^2 x ) = sin x = ? [ 1 - ( 4 / 5 ) ^ 2 ] = ? [ 1 - 16 / 25...

math
A = Present age of A B = Present age of B Five years ago person A was A - 5 yrs old. Person B was B - 5 yrs old. Five years ago, A was three times as old as B mean: A - 5 = 3 ( B - 5 ) Ten years later person A shal be: A - 5 + 10 = A + 5 yrs old Person B shal be: B - 5 + 10 = ...

Math
- sin x = cos x Divide both sides by - cos x - sin x / - cos x = cos x / - cos x tan x = - 1 Solution: x = pi * n - pi / 4 If n = 1 then: x = pi * n - pi / 4 = pi * 1 - pi / 4 = pi - pi / 4 = 4 pi / 4 - pi / 4 = 3 pi / 4 If n = 2 then: x = pi * n - pi / 4 = pi * 2 - pi / 4 = 2...

Hard Pre-Algrebra question
( 2 1 / 2 ) / ( 1 / 8 ) = 2.5 / 0.125 = 20 ( 2 1 / 8 ) / ( 1 / 8 ) = 2.125 / 0.125 = 17 1 / ( 1 / 8 ) = 1 / 0.125 = 8 20 * 17 * 8 = 2720 cubes OR Volume of a right rectangular prism: V = 2 1/2 * 2 1/8 * 1 = 2.5 * 2.125 * 1 = 5.3125 in ^ 3 Volume of a cube: V = ( 1 / 8 ) ^ 3 = ...

The two-point form of a straight line passing through the points ( x1, y1 ) and ( x2 , y2 ) is given by: y ? y1 = ( y2 ? y1 ) * ( x ? x 1 ) / ( x2 ? x1 ) Ini this case: x1 = 1994 , x2 = 1996 y1 = 6400 , y2 = 6800 So: y ? y1 = ( y2 ? y1 ) * ( x ? x 1 ) / ( x2 ? x1 ) y ? 6400...

Fundamentals Of Math
a = first piece b = second piece One piece is 10 cm longer than the other mean: b = a + 10 a + b = 60 a + a + 10 = 60 2 a + 10 = 60 Subtract 10 to both sides 2 a + 10 - 10 = 60 - 10 2 a = 50 Divide both sides by 2 a = 50 / 2 = 25 cm b = a + 10 b = 25 + 10 = 35 cm

Algebra 1
The domain of this function is the set of values you may choose for h , the independent variable. A number of horses must be a nonnegative integer The domain is the set of nonnegative integers: 0, 1, 2, 3, 4, 5, 6... The range of this function is the set of values you will ...

Algebra 2
S ? = ? ? = a * r ^ n =? a? ? ( 1 ??– ?r ) n=1 In this case a = 2 , infinite sum = 10? so: S ? = 10 = a? ? ( 1 ??– ?r ) 10 = 2? ? ( 1 ??– ?r ) Multiply both sides by 1 - r 10 * ( 1 ??– ?r ) = 2? 10 * 1 ??– ?10 * r = 2? 10 - 10 r = 2 Subtract 10 to both...

math
a triangular prism

Math
In google type: math limit calculator online When you see list of results click on: Limit Calculator - eMathHelp When page be open in rectangle type you funcktion and click option CALCULATE You will see solution step-bystep By the way square root is write sqrt not just root. ...

math
If it is an isosceles triangle the two base angles will be equal. Let the base angle be a, then the vertex angle will be: 180° - 2 a According to the condition: Top vertex is twice the of the sum of the base angle: 180° - 2 a = 2 ( a + a ) 180° - 2 a = 2 * 2a 180&...

Mathematics

Pre-cal
a = first number b = second number b = 2 a - 5 b + a ^ 2 = 115 2 a - 5 + a ^ 2 = 115 - 5 + a ^ 2 + 2 a = 115 Subtract 115 to both sides - 5 + a ^ 2 + 2 a - 115 = 115 - 115 - 5 + a ^ 2 + 2 a - 115 = 0 Try to slove this equation. The solutions are : a = - 12 and a = 10 - 12 isn...

MATH HELP! CHECK MY ANSWER ASAP!
1. V = l w h Divide both sides by l w V / l w = h 2. x = y + z Subtract y to both sides x - y = y + z - y x - y = z 3. r t = d Divide both sides by t r = d / t r = 7.5 / 1.5 = 5 mph

m240

m240

math
t = total practice time s = shooting practice time d = dribbling practice time s = ( 7 / 10 ) t = 0.7 t d = t - s = t - 0.7 t = 0.3 t d = 18 min 0.3 t = 18 Divide both sides by 0.3 t = 18 / 0.3 = 60 min s = 0.7 t = 0.7 * 60 = 42 min

math
L1 = Length of the first rectangle W1 = Width of the first rectangle A1 = Area of the first rectangle L2 = Length of the second rectangle W2 = Width of the second rectangle A1 = Area of the second rectangle L1 = 2 W1 A1 = L1 * W1 = 2 W1 * W1 = 2 W1 ^ 2 L2 = L1 + 3 = 2 W1 + 3 ...

Algebra 1
1. ( a + b ) ^ 2 = a ^ 2 + 2 a * b + b ^ 2 so ( 3 ?6 + 5 ?10 ) ^ 2 = ( 3 ?6 ) ^ 2 + 2 * 3 ?6 * 5 ?10 + ( 5 ?10 ) ^ 2 ( 3 ?6 + 5 ?10 ) ^ 2 - 286 + 60 ?15 = ( 3 ?6 ) ^ 2 + 2 * 3 ?6 * 5 ?10 + ( 5 ?10 ) ^ 2 - 286 + 60 ?15 = 3 ^ 2 * 6 + 6 * ?6 * 5 ?10 + 5 ^ 2 * 10 - 286 + 60 ?15 = ...

Math
a = numbers of adults s = number of students 120 people attended the baseball game mean: a + s = 120 Adults cost \$6 and students cost \$4 to attend the game. The game raised \$600 from the attendance mean: a * &6 + s * \$4 = \$600 OR 6 a + 4 s = 600 Now you must solwe system: a + ...

HELP MATH
Let x be the amount of money he has. Let m be price of one mango. Let o be price of one orange. Suppose he can just buy n of each fruit. Then: n * m + n * o = x You know 20 mangoes cost x so m = x / 20 likewise o = x / 30 So you have: n * m + n * o = x n * x / 20 + n * x / 30...

D S S LIMAWA MINNA NIGER STATE
mass = m = 20 g = 20 / 1000 = 0.02 kg speed = v = 150m/s The workdone to stop bullet must be equal to its kinetic energy: W = m v ^ 2 / 2 W = 0.02 * 150 ^ 2 / 2 = 0.02 * 22500 / 2 = 450 / 2 = 225 J 225 Joules

Math
A A C

Math
1. 40% = 40 / 100 = 0.4 85 / 0.4 = 212.5 ANSWER A 2. 5% = 5 / 100 = 0.05 0.05 * 1250 = 62.5 Answer A 3. 6.25% = 6.25 / 100 = 0.0625 0.0625 * 249.99 = 15.624375 15.624375 + 249.99 = 265.614375 OR Price of a desk = 100% Tax rate = 6.25% Total price = 100% + 6.25% = 106.25% = 106...

math
1 - 1 / 3 = 3 / 3 - 1 / 3 = 2 / 3 2 / 3 * 12 = 24 / 3 = \$8

math
If you think about triangular numbers then: xn = n ( n + 1 ) / 2 n = 1 x1 = 1 * ( 1 + 1 ) / 2 = 1 * 2 / 2 = 2 / 2 = 1 1 is less than 10. n = 2 x2 = 2 * ( 2 + 1 ) / 2 = 2 * 3 / 2 = 6 / 2 = 3 3 is less than 10. n = 3 x3 = 3 * ( 3 + 1 ) / 2 = 3 * 4 / 2 = 12 / 2 = 6 6 is less than...

Algebra
a1 = 25 an = a1 + ( n- 1 ) d a20 = a1 + ( 20 - 1 ) d 500 = 25 + 19 d Subtract 25 to both sides 500 - 25 = 25 + 19 d - 25 475 = 19 d Divide both sides by 19 475 / 19 = d 25 = d d = 25

Math
If you think about this question: Winnie wrote the following riddle: I am a number between 60 and 100. My ones digit is two less than my tens digit. I am a prime number. Part A What number does Winnie’s riddle describe? Explain. Part B Winnie’s friend Marco guessed ...

MATH

Algebra 2
Multiply first equation by ? 1 The result: 2 x - 2 y - 3 z = 0 Add the result to the second equation 2 x - 2 y - 3 z = 0 + - 2 x - y + z = - 3 _______________ 0 - 3 y - 2 z = - 3 - 3 y - 2 z = - 3 Add the first equation to the third equation - 2 x + 2 y + 3 z = 0 + 2 x + 3 y...

Math
W = L - 22 A = L ( L - 22 ) L = 39 in A = L ( L - 22 ) = 39 ( 39 - 22 ) = 39 * 17 = 663 in ^ 2

LCD = 12 1 / 3 = 1 * 4 / 3 * 4 = 4 / 12 3 / 4 = 3 * 3 / 4 * 3 = 9 / 12 5 / 12 = 5 / 12 1 / 2 = 1 * 6 / 2 * 6 = 6 / 12 5 / 6 = 5 * 2 / 6 * 2 = 10 / 12

calculus
a L = ? [ sqrt 1 + ( y´ )^ 2 ] dx b In this case: y´= 3 * 5 * x ^ 2 + 9 = 15 x ^ 2 + 9 1 + ( y´ )^ 2 = 1 + ( 15 x ^ 2 + 9 ) ^ 2 a = - 3 b = 1 f(x) = sqroot [ 1 + ( 15 x ^ 2 + 9 ) ^ 2 ]

math

maths
Profit of 10% = 100% + 10% = 110% Loss of 10% = 100% - 10% = 90% Let selling price of each table be x Total selling price = 2 x Total cost price = 100 x /110 + 100 x / 90 = 9 * 100 x / ( 11 * 90 ) + 100 * 11 x / ( 90 * 11 ) = 900 x / 990 + 1100 x / 990 = 2000 x / 990 = 10 * ...

Math help plz?!!
arcsin(0.89) = 1.09734517 radians arcsin(0.89)= 62.87325° arcsin(0.89)= 62.87° to the nearest hundredth of a degree

math
t = tulips r = roses c = carnations For every 10 tulips, there are 4 roses and 6 carnation mean: r = ( 4 / 10 ) t = 0.4 t c = ( 6 / 10 ) t = 0.6 t t + r + c = 100 t + 0.4 t + 0.6 t = 100 2 t = 100 Divide both sides by 2 t = 100 / 2 = 50 tulips r = 0.4 * 50 = 20 roses c = 0.6...

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