Monday
July 25, 2016

Posts by Bosnian

Total # Posts: 2,149

maths
first number = 7 n second number = 7 n + 7 third number = 7 n + 14 7 n + 7 n + 7 + 7 n + 14 = 777 21 n + 21 = 777 Subtact 21 to both sides 21 n + 21 - 21 = 777 - 21 21 n = 756 Divide both sides by 21 n = 756 / 21 = 36 first number = 7 n = 7 * 36 = 252 second number = 7 n + 7...
October 15, 2015

math
3,600 miles / 40 miles per gallon = 90 gallons 90 * 2.4 $ = 216 $
October 15, 2015

Math
1 yd = 3 ft 1 yd ^ 2 = ( 3 ft ) ^ 2 = 9 ft ^ 2 1 yd ^ 2 / 2 min = 9 / 2 = 4.5 ft ^ 2 / min 3 ft * 30 ft = 90 ft ^ 2 90 ft ^ 2 / ( 4.5 ft ^ 2 / min ) = 20 min
October 14, 2015

Math
1 h = 60 min 40 min = 40 / 60 = 2 * 20 / ( 3 * 20 ) = 2 / 3 h 8 h 40 min = 8 h + 2 / 3 h = 8 * 3 / 3 + 2 / 3 = 24 / 3 - 2 / 3 = 26 / 3 h 3 h = 3 * 3 / 3 = 9 / 3 h Car travel 8 h 40 min. For this time the bus travel = 8 h 40 min + 3 h = 11 h 40 min = 8 h 40 min + 3 h = 26 / 3 h...
October 14, 2015

applications in algebra
A bedroom is 7 feet longer than its width. This mean L = 7 + W A = L * W = 228 ( 7 + W ) * W = 228 7 W + W ^ 2 = 228 W ^ 2 + 7 W = 228 Subtract 228 to both sides W ^ 2 + 7 W - 228 = 228 - 228 W ^ 2 + 7 W - 228 = 0 The solutions are : W = 12 and W = - 19 Width can't be ...
October 11, 2015

Math,english,agric,b/sci,PHE,computer,etc
The sum of two consecutive integers can't be an even number, because the one number is even and the other odd. in this case: a = first number b = second number b = a + 1 a + b = 122 a + a + 1 = 122 2 a + 1 = 122 Subtract 1 to both sides 2 a + 1 - 1 = 122 - 1 2 a = 121 ...
October 11, 2015

Math
No. 5 ^ 2 + 10 ^ 2 - 2 * 5 * 10 cos 50° = 25 + 100 - 100 * cos 50° = 25 + 100 ( 1 - cos 50 ° ) = 25 + 100 * ( 1 - 0.64278761 ) = 25 + 100 * 0.35721239 = 25 + 35.721239 = 60.721239 5 ^ 2 + 10 ^ 2 - 2 * 5 * 10 cos 130° = 25 + 100 - 100 * cos 130° = 25 + 100...
October 11, 2015

Math
166 2/3 % = 166 / 100 + ( 2 / 3 ) / 100= [ 166 + ( 2 / 3 ) ] / 100 = ( 166 * 3 / 3 + 2 / 3 ) / 100 = ( 498 / 3 + 2 / 3 ) / 100 = ( 500 / 3 ) / 100 = 5 / 3 60 / ( 5 / 3 ) = 60 * 3 / 5 = 180 / 5 = 36 Proof : 166 2/3% = 166 / 100 + ( 2 / 3 ) / 100 = 1....
October 9, 2015

Math- HELP
1. 7 / 8 = 0.875 2. 1 1/2 = 1 + 1 / 2 = 1.5 3. 4 3/8 = 4 + 3 / 8 = 4.375 4. 0.4 = 4 / 10 = 2 * 2 / ( 2 * 5 ) = 2 / 5 5. 7.1 = 7 + 0.1 = 7 + 1 / 10 = 7 1/10
October 9, 2015

Math
4 / 5 = 4 * 3 / ( 5 * 3 ) = 12 / 15 - 7 / 15 + ( - 4 / 5 ) = - 7 / 15 - 4 / 5 = - 7 / 15 - 12 / 15 = - 19 / 15
October 8, 2015

Math
Prime numbers 1 - 10 are : 1 , 2 , 3 , 5 and 7 tottal 4 numbers the odds of you getting a prime number = 4 / 10 = 0.4 = 40 %
October 8, 2015

algebra
0.15151515... = 15 / 99 = 3 * 5 / ( 3 * 33 ) = 5 / 33
October 8, 2015

algebra
0.15151515... = 15 / 100 + 15 / 10000 + 15 / 1000000 + 15 / 100000000 + ... = 15 / 100 + 15 / 100 ^ 2 + 15 / 100 ^ 3 + 15 / 100 ^ 4 + ... This is the geometric series : a + a r + a r ^ 2 + a r ^ 3 + a r ^ 4 + ... with a = 15 / 100 and r = 1 / 100 As n goes to infinity the sum ...
October 8, 2015

Integration need help also
In google type : integration calculator online emathhelp when you see list of results click on : Integral Calculator with Steps - eMathHelp When page be open In rectangle type : sinx^2.xdx then clic button CALCULATE You will se solution step - by -step
October 3, 2015

Prove that sin(A+B) need help
In google type : Prove that sin(A+B) When you see list of results click on : Proof of the sum and difference formulas. - The Math Page You will see proof.
October 3, 2015

stats
x1 = 77 x2 = 79 x3 = 95 x4 = 93 averagge of five exam: ( x1 + x2 + x3 + x4 + x5 ) / 5 = 80 ( 77 + 79 + 95 + 93 + x5 ) / 5 = 80 ( 344 + x5 ) / 5 = 80 Multiply both sides by 5 344 + x5 = 80 * 5 344 + x5 = 400 Subtract 344 to both sides x5 = 400 - 344 = 56 Answer: Greater or ...
October 3, 2015

Math
OR if you write : x = number of pencils y = number of pens then x + 1.5 y = 21 x + y = 18
September 30, 2015

Math
x = number of pens y = number of pencils She bought a total of 18 items. x + y = 18 Stella spent 21 $ 1.5$ * x + 1 $ * y = 21 & 1.5 x + 1 * y = 21 1.5 x + y = 21 You must solve system : x + y = 18 1.5 x + y = 21 The solutions aree . x = 6 y = 12 Proof : 6 * 1.5 $ + 12 * 1 $ = ...
September 30, 2015

math
68.9 ft rounded to one decimal place
September 30, 2015

math
1 ft = 12 in 6 ft 4 in = 6 * 12 + 4 = 72 + 4 = 76 in 1 in = 2.54 cm = 2.54 / 100 = 0.0254 m Tall of the basketball player in meters : 76 * 0.0254 = 1.9304 m Tall of the volleyball player in feet : 1.75 / 0.0254 = 68.89763778 ft = 68.9 in rounded to one decimal place
September 30, 2015

Algebra
Tonys age = x Maris age = y Maria is 5 years younger. y = x - 5
September 25, 2015

Algebra 2
( x - y ) ^ 2 = x ^ 2 - 2 x y + y ^ 2 ( b - 8 ) ^ 2 = b ^ 2 - 2 b * 8 + 8 ^ 2 = b ^ 2 - 16 b + 64
September 25, 2015

Algebra 2
Multiply each term in one polynomial by each term in the other polynomial. ( 4 x + 2 y ) ( x - 3 y ) = x * 4 x + x * 2 y - 3 y * 4 x - 3 y * 2 y = 4 x ^ 2 + 2 x y - 12 x y - 6 y ^ 2 = 4 x ^ 2 - 10 x y - 6 y ^ 2
September 25, 2015

Math
7 pizza’s cut into 8 slices. Total 7 * 8 = 56 slices 56 slices / 14 = 4 slices 4 slices of 8 slices in one pizza = 4 / 8 = 1 / 2 OR 7 pizza per 14 students = 7 / 14 = 1 / 2
September 25, 2015

math
P = Pramod age S = Sister age Difference of their age now = 15 yr So : P = S - 15 After 5 years Pramod will be 5 years older, and sister will be 5 years older. Ratio of their age will be : ( P + 5 ) / ( S + 5 ) = 1 / 2 P = S - 15 so : ( S - 15 + 5) / ( S + 5 ) = 1 / 2 ( S - 10...
September 25, 2015

math
35 h * 1 / 5 = 7 h 35 h * 1 / 2 = 17.5 h 35 h * 1 / 7 = 5 h 7 h + 17.5 h + 5 h = 29.5 h The rest of his time = 35 - 29.5 = 5.5 h 5.5 / 35 = 0.15714 = 15 .714 % Approx. 15 %
September 25, 2015

Pre Algrebra
SORRY MY MISTAKE!!!!!! 1 / 5 ^ - 4 = 1 / ( 1 / 5 ) ^ 4 = 5 ^ 4 = 5 * 5 * 5 * 1 / m * 1 / m * 1 / m * 1 / m + 5 * 5 * 5 * 5 ANSWER A
September 22, 2015

Pre Algrebra
m ^ - 4 = 1 / m * 1 / m * 1 / m * 1 / m 1 / 5 ^ - 4 = 1 / 5 * 1 / 5 * 1 / 5 * 1 5 m ^ - 4 + 1 / 5 ^ - 4 = 1 / m * 1 / m * 1 / m * 1 / m + 1 / 5 * 1 / 5 * 1 / 5 * 1 5 Answer d
September 22, 2015

Algebra
a = number of adult tickets b = number of children tickets There were 170 tickets sold in 1 day. This mean : a + c = 170 Subtract c to both sides a + c - c = 170 - c a = 170 - c Money made = 1475 $ 1475 $ = a * 10 $ + c * 7 $ 1475 = 10 a + 7 c 10 a + 7 c = 1475 10 ( 170 - c...
September 22, 2015

Math
1. Ancwer d Correct becouse 3 / 5 = 18 / 30 and 1 / 6 = 5 / 30 2. 2 / 5 = 2 * 9 / ( 5 * 9 ) = 18 / 45 1 / 9 = 1 * 5 / ( 9 * 5 ) = 5 / 45 2 / 5 + 1 / 9 = 18 / 45 + 5 / 45 = 23 / 45 Answer b 3. 4 / 5 = 4 * 8 / ( 5 * 8 ) = 32 / 40 3 / 8 = 3 * 5 / ( 8 * 5 ) = 15 / 40 4 / 5 - 3 / 8...
September 21, 2015

Algebra
z = ( x - 8 ) / ( 2 x ) Multiply both sides by 2 x z * 2 x = x - 8 Subtract x to both sides z * 2 x - x = - 8 x * ( 2 z - 1 = - 8 Divide both sides b 2 z - 1 x = - 8 / ( 2 z - 1 ) By the way : - 8 / ( 2 z - 1 ) = 8 / ( 1 - 2 z ) So : x = - 8 / ( 2 z - 1 ) = 8 / ( 1 - 2 z )
September 21, 2015

Math
Paste your question in google. You will find couple explanations.
September 21, 2015

Intermediate Algebra (math)
( 8 x ^ 2 y ^ 2 + 4 x y ^ 2 - 12 y ^ 2 ) / ( 4 x y ^ 2 ) = 4 y ^ 2 ( 2 x ^ 2 + x - 3 ) / ( 4 x y ^ 2 ) = ( 2 x ^ 2 + x - 3 ) / x
September 17, 2015

algebra
( 5 t - 6 c + 4 )+(- 8 t + 9 c ) = 5 t - 6 c + 4 - 8 t + 9 c = 5 t - 8 t - 6 c + 9 c + 4 = - 3 t + 3 c + 4 = 3 c - 3 t + 4 = 3 ( c - t ) + 4
September 17, 2015

Maths
R = Roberts age C = Catherine age The ratio of their age now : R / C = 3 Multiply both sides by C R * C / C = 3 C R = 3 C The ratio of their age after 8 years : ( R + 8 ) / ( C + 8 ) = 2 / 1 = 2 ( 3 C + 8 ) / ( C + 8 ) = 2 Multiply both sides by C + 8 ( 3 C + 8 ) * ( C + 8...
September 17, 2015

algebra
r1 = radius of a larger sphere r2 = radius of a smaller sphere Volume of a sphere is given by the formula : V = ( 4 / 3 ) pi * r ^ 3 Vollume of a larger sphere : V1 = ( 4 / 3 ) pi * r1 ^ 3 = ( 4 / 3 ) pi * ( 3 / 4 ) ^ 3 = Vollume of a smaller sphere : V2 = ( 4 / 3 ) pi * r2 ^ ...
September 17, 2015

MATHS - please help
- 3 / 5 ( x - 1 ) + y + 4 = 0 Multiply both sides by 5 - 3 x + 5 y + 20 = 0
September 14, 2015

MATHS - please help
Sorry c = 4
September 14, 2015

MATHS - please help
y + 4 = 3 / 5 ( x - 1 ) Subtract 3 / 5 ( x - 1 ) y + 4 - 3 / 5 ( x - 1 ) = 3 / 5 ( x - 1 ) - 3 / 5 ( x - 1 ) y + 4 - 3 / 5 ( x - 1 ) = 0 - 3 / 5 ( x - 1 ) + y + 4 = 0 a = - 3 / 5 b = 1 c = 47
September 14, 2015

Algebra
a ^ 2 + b ^ 2 = a ^ 2 + 2 a * b + b ^ 2 2 a * b = a ^ 2 + b ^ 2 2 a * b = a ^ 2 + 2 a * b + b ^ 2 Subtract 2 a * b to both sides 2 a * b - 2 a * b = a ^ 2 + 2 a * b + b ^ 2 - 2 a * b 0 = a ^ 2 + b ^ 2 Subtract a ^ 2 to both sides 0 - a ^ 2 = a ^ 2 + b ^ 2 -a ^ 2 - a ^ 2 = b ^ ...
August 30, 2015

Math
Your answer is correct.
August 29, 2015

Math
1 . a = first number b = second number The large one is 9 times the other. This mean : b = 9 a a * b = 15876 a * 9 a = 15876 9 a ^ 2 = 15876 Divide both sides by 9 a ^ 2 = 15876 / 9 a ^ 2 = 1764 a = sqroot ( 1764 ) a = 42 b = 9 a = 9 * 42 = 3789 2. a = first number b = second ...
August 29, 2015

Math
0.57 = 0.57 * 100 / 100 = 57 / 100
August 25, 2015

Math
Divide the numerator by the denominator.
August 25, 2015

math
After taking three tests average = 84 This mean a student in three test scored 3 * 84 = 252 pt average = 252 / 3 = 84 After four test a student average = ( 252 + 96 ) / 4 = 348 / 4 = 87 Answer C
August 5, 2015

Algebra
5 ( a - 7 ) + 7 = 2 ( a - 5 ) 5 * a - 5 * 7 + 7 = 2 * a - 2 * 5 5 a - 35 + 7 = 2 a - 10 5 a - 28 = 2 a - 10 Subtract 2 a to both sides 5 a - 28 - 2 a = 2 a - 10 - 2 a 3 a - 28 = - 10 Add 28 to both sides 3 a - 28 + 28 = - 10 + 28 3 a = 18 Divide both sides by 3 3 a / 3 = 18 / ...
August 3, 2015

MATH
If the sum of the n term = 225 your question does not make sense. It can not be solved. But if the sum of the n term = 255 then : In geometric sequence : The nth term is : an = a1 * r ^ ( n - 1 ) Where a1 is the first term of the sequence. r is the common ratio. n is the ...
August 1, 2015

Math
A) 7 2 / 9 = 7 + 2 / 9 = 7 * 9 / 9 + 2 / 9 = 63 / 9 + 2 / 9 = 65 / 9 ( 6 / 5 ) * ( 65 / 9 ) = 6 * 65 / ( 5 * 9 ) = 2 * 3 * 5 * 13 / ( 5 * 3 * 3 ) = 2 * 13 / 3 = 26 / 3 B) 6 2 / 7 = 6 + 2 / 7 = 6 * 7 / 7 + 2 / 7 = 42 / 7 + 2 / 7 = 44 / 7 2 * 44 / 7 = 88 / 7
August 1, 2015

mathematics
Volume of a sphere : V = ( 4 \ 3 ) * pi * r ^ 3 Radius increased by 5% New radius : rN = r + ( 5 / 100 ) * r = r + 0.05 * r = 1.05 * r rN = 1.05 * r New volume of a sphere : VN = { 4 \ 3 ) * pi * rN ^ 3 = { 4 \ 3 ) * pi * ( 1.05 r ) ^ 3 = { 4 \ 3 ) * pi * ( 1.05 ) ^ 3 * r ^ 3...
July 31, 2015

Math
taxexs = 4,550 / 35,000 = 0.13 = 13 % 35,000 + 4,000 = 39,000 39,000 * 0.13 = 5,070 5,070 - 4,550 = 520 $ OR 4,550 / 35,000 = x / ( 35,000 + 4000 ) 4,550 / 35,000 = x / 39,000 4,550 * 39,000 = x * 35,000 x = 4,550 * 39,000 / 35,000 x = 177,450,000 / 35,000 x = 5,070 $ 5,070 - ...
July 24, 2015

algebra
( - a - 6 b + 4 ) 3 a b = ( - a ) * 3 a b - 6 b * 3 a b + 4 * 3 a b = - 3 a ^ 2 * b - 18 a * b ^ 2 + 12 ab
July 24, 2015

Math
In google type : Multiplying and dividing decimals, multiply two or more decimals. When you see list of results click on : w w w . m o n t e r e y i n s t i t u t e . o r g
July 16, 2015

math
b = numer of boys g = number of girls There are 5 more girls than boys. g = b + 5 b + g = 49 b + b + 5 = 49 2 b + 5 = 49 Suptract 5 to both sides 2 b + 5 - 5 = 49 - 5 2 b = 44 Divide both sides by 2 2 b / 2 = 44 / 2 b = 22
July 16, 2015

math
b = numer of boys g = number of girls There are 15 more girls than boys. g = b + 15 b + g = 323 b + b + 15 = 323 2 b + 15 = 323 Subtract 15 to both sides 2 b + 15 - 15 = 323 - 15 2 b = 308 Divide both sides by 2 2 b / 2 = 308 / 2 b = 154
July 16, 2015

Algebra
Both answers is correct but you can simplify answer 1. sqrt ( 280 x ^ 6 ) / sqrt ( 7 x ) = sqrt ( 280 x ^ 6 / 7 x ) = sqrt [ ( 280 / 7 ) * x ^ 6 / x ] = sqrt ( 40 * x ^ 5 ) = sqrt ( 40 ) * sqrt ( x ^ 5 ) = sqrt ( 4 * 10 ) * sqrt ( x ^ 5 ) = sqrt ( 4 ) * sqrt ( 10 ) * sqrt ( x...
July 9, 2015

math
She is used: 350 ft - 110 ft = 240 ft of fence Perimeter of a square : P = 4 a 4 a = 240 ft Divide both sides by 4 a = 60 ft
July 9, 2015

maths
sqrt ( 2 ) isnt root of a cubic polynomial 6 x ^ 3 + 2 x ^ 2 - 10 x - 4 sqrt ( 2 )
July 5, 2015

math
In google type: integral calculator with steps When you see list of results click on: Integral Calculator with Steps - eMathHelp When page be open in rectangle: Enter a function type: x^3/(x^2+1)^(1/2) Remark: You must type function exactly in this form with brackets at (1/2) ...
July 5, 2015

math arithmetic sequence and series
If the initial term of an arithmetic progression is a1 and the common difference of successive members is d, then the nth term of the sequence (an is given by: an = a1 + ( n - 1 ) * d This sum : S = n * [ 2 a1 + ( n - 1 ) * d ] / 2 In this case : a1 = 30 d = 3 n = 15 S = n...
June 30, 2015

Maths
59 * 59 - 41 * 41 = 3481 - 1681 = 1800 = 2 * 900 = 2 * 2 * 450 = 2 * 2 * 2 * 225 = 2 * 2 * 2 * 3 * 75 = 2 * 2 * 2 * 3 * 3 * 25 = 2 * 2 * 2 * 3 * 3 * 5 * 5 = 2 ^ 3 * 3 ^ 2 * 5 ^ 2
June 30, 2015

algebra
In google type : mathportal roots calculator When you see list of result click on : Online Polynomial Roots Calculator with explanation When page be open in rectangle type : x^4 + 2 x^3 - 13 x^2 + 4 x - 30 and cick option : Find Roots You will see solution step by step
June 23, 2015

quadratic functions
How can you predict the number of x-intercepts without drawing the graph. Discriminant = b ^ 2 - 4 a c If the discriminant is positive, then there are two distinct roots ( x - intercepts ). If the discriminant is zero, then there is exactly one real root x - intercept ). If ...
June 6, 2015

quadratic functions
- a x ^ 2 - b x - c = - ( a x ^ 2 + b x + c ) Quadratic function can be concave up or concave down. If a x ^ 2 + b x + c concave up or concave down graph of - a x ^ 2 - b x - c will be concave down or concave up. The graph is rotated 180 ° around the x - axis, but x-...
June 6, 2015

Calculus
Copy your question in google. When you see list of results click on : e n . a l l e x p e r t s . c o m You will see answer.
June 6, 2015

Math
( m ^ 2 - m + 3 ) + ( m - 1 ) = m ^ 2 - m + 3 + m - 1 = m ^ 2 - m + m + 3 - 1 = m ^ 2 + 2 ( m ^ 2 - m + 3 ) - ( m - 1 ) = m ^ 2 - m + 3 - m - ( - 1 ) = m ^ 2 - m - m + 3 + 1 = m ^ 2 - 2 m + 4
June 2, 2015

mat/116
x = score of second test average = ( 74 + x ) / 2 78 = ( 74 + x ) / 2 Multiply both sides by 2 156 = 74 + x Subtract 74 to both sides 156 - 74 = 74 + x - 74 82 = x x = 82 average = ( 74 + x ) / 2 = ( 74 + 82 ) / 2 = 156 / 2 = 78
May 25, 2015

math
Answer B
May 19, 2015

math
8 * 10 ^ 3 * 7 * 10 ^ 5 = 8 * 7 * 10 ^ 3 * 10 ^ 5 = 56 * 10 ^ 8 = 5.6 * 10 * 10 ^ 8 = 5.6 * 10 ^ 9 ________________________________ Remark: a ^ n * a ^ m = a ^ ( m + n ) 10 ^ 3 * 10 ^ 5 = 10 ^ ( 3 + 5 ) = 10 ^ 8 10 = 10 ^ 1 10 * 10 ^ 8 = 10 ^ 1 * 10 ^ 8 = 10 ^ ( 1 + 8 ) = 10...
May 19, 2015

prealgebra
5 / 45 = 5 / ( 5 * 9 ) = 1 / 9
May 14, 2015

Math
an = a1 + ( n - 1 ) * d an = 4.6 + ( n - 1 ) * 3.2
May 13, 2015

Math
In arithmetic sequence : an = a1 + ( n - 1 ) * d d is the common difference n is the number of the term to find a6 = a1 + ( 6 - 1 ) * d = 20.6 a1 + 5 d = 20.6 a9 = a1 + ( 9 - 1 ) * d = 30.2 a1 + 8 d = 30.2 Now you must solve system of two equations with two unknown : a1 + 5 d...
May 13, 2015

Math
- 16 t ^ 2 + 200 = 0 Subtract 200 to toth sides - 16 t ^ 2 + 200 - 200 = 0 - 200 - 16 t ^ 2 = - 200 Divide both sides by - 16 - 16 t ^ 2 / - 16 = - 200 / - 16 t ^ 2 = - 200 / -16 t ^ 2 = 200 / 16 t ^ 2 = 4 * 50 / ( 4 * 4 ) t ^ 2 = 50 / 4 t ^ 2 = 2 * 25 / ( 2 * 2 ) t ^ 2 = 25...
May 13, 2015

Math
4 sin ( theta ) + 1 = 2 sin ( theta ) Subtract 2 sin ( theta to both sides ) 4 sin ( theta ) + 1 - 2 sin ( theta ) = 2 sin ( theta ) - 2 sin ( theta ) 2 sin ( theta ) + 1 = 0 Subtract 1 to both sides 2 sin ( theta ) + 1 - 1 = 0 - 1 2 sin ( theta ) = - 1 Divide both sides by 2 ...
May 13, 2015

Maths
a = the length of the larger square b = the length of the smaller square a ^ 2 + b ^ 2 = 65 Possible combinations : a = 1 , b = 8 , a ^ 2 + b ^ 1 = 1 ^ 2 + 8 ^ 2 = 1 + 64 = 65 But the length of the smaller square is greater of the length of the larger square. You must reject ...
May 5, 2015

math
m = number of male lions f = number of female lions m / f = 21 / 20 Multiply both sides by 20 20 m / f = 21 * 20 / 20 20 m / f = 21 Multiply both sides by f 20 m * f / f = 21 * f 20 m = 21 f Divide both sides by 20 20 m / 20 = 21 f / 20 m = 21 f / 20 m + f = 123 ...
May 5, 2015

math
L = 2 W + 3 A = L * W = ( 2 W + 3 ) * W = 2 W ^ 2 + 3 W A = 2 W ^ 2 + 3 W 54 = 2 W ^ 2 + 3 W Subtract 54 to both sides 54 - 54 = 2 W ^ 2 + 3 W - 54 0 = 2 W ^ 2 + 3 W - 54 2 W ^ 2 + 3 W - 54 = 0 The solutions are : W = - 6 and W = 9 / 2 Width can't be negative so : W = 9 / ...
May 5, 2015

math
2 x ^ 2 ( 5 x ^ 2 - 1 x - 4 ) = ( 2 x ^ 2 * 5 x ^ 2 ) - ( 2 x ^ 2 * 1 x ) - ( 2 x ^ 2 * 4 ) = 10 x ^ 4 - 2 x ^ 3 - 8 x ^ 2
May 2, 2015

(Algebra) need help plz
Straight-line equations is the "slope-intercept" form: y = m * x + b x = - 1 , y = - 2 y = m * x + b - 2 = m * ( - 1 ) + b - 2 = - m + b Add 2 to both sides - 2 + 2 = - m + b + 2 0 = - m + b + 2 Add m to both sides 0 + m = - m + b + 2 + m m = b + 2 x = 0 , y = 1 y = ...
May 1, 2015

math
Watch x and y values : x = - 2 , y = - 4 , y = 2 x x = 0 , y = 0 , y = 2 x x = 2 , y = 4 , y = 2 x x = 4 , y = 8 , y = 2 x y = 2 x
April 27, 2015

math
p = $100 + $0.2 * kilometers Answer C.
April 27, 2015

Math
10 = 2 * 5 20 = 2 * 10 40 = 2 * 20 I geometric sequence : an = a1 * r ^ ( n - 1 ) where a1 is the first term of the sequence. r is the common ratio. n is the number of the term to find In this case : a1 = 5 r = 2 an = a1 * r ^ ( n - 1 ) an = 5 * 2 ^ ( n - 1 )
April 20, 2015

Calculus
In google type : Shortest Ladder over a Fence When you see list of results click on: Shortest Ladder over a Fence - Mathematics Archives You will see solution.
April 20, 2015

math
Prime factors decomposition: 4312440 = 2 * 2 * 2 * 3 * 3 * 3 * 3 * 5 * 11 * 11 * 11 Divisors are 2 , 3 , 5 , 11 4 divisors.
April 20, 2015

Algebra 1
2 x - y = z Add y to both sides 2 x - y + y = z + y 2 x = z + y Subtract z to both sides 2 x - z = z + y - z 2 x - z = y y = 2 x - z
April 20, 2015

Math
3,000 cm Becouse 1 m = 100 cm 3,000 cm = 3,000 / 100 = 30 m
April 20, 2015

math
Completely fill the 7 gallon bucket. Pour the water from 7 gallon bucket into 12 gallon bucket. Again completely fill the 7 gallon bucket. Pour the water from 7 gallon bucket into 6 gallon bucket. Now in 7 gallon bucket you have 7 - 6 = 1 gallon. Pour that 1 gallon into 12 ...
April 16, 2015

Math
1.) a1 = 16.5 a2 = 16.5 + 0.25 = 16.75 a3 = 16.75 + 0.25 = 17 a4 = 17 +0.25 = 17.25 a5 = 17.25 +0.25 = 17.5 2.) an = a1 + ( n - 1 ) * d an = - 1 + ( n - 1 ) * 5 OR an = 5 ( n - 1 ) - 1
April 16, 2015

Math
In an Arithmetic Sequence the difference between one term and the next is a constant. 19 - 14 = 5 24 - 19 = 5 29 - 24 = 5 So difference = 5 29 + 5 = 34 34 + 5 = 39 39 + 5 = 44 Answer A
April 16, 2015

pre-calc
When you want to solve system with three unknowns you must write three equations, not two.
April 16, 2015

math
3. Answer c Becouse : For x = - 4 y = 2 x – 3 = 2 * ( - 4 ) - 3 = - 8 - 3 = - 11 4. Answer d If your expression mean y = - x + 8 6. m = ( y2 - y1 ) / ( x2 - x1 ) In this case : x1 = 6 , x2 = 4 , y1 = 2 , y2 = - 2 m = ( y2 - y1 ) / ( x2 - x1 ) = ( - 2 - 2 ) / ( 4 - 6...
April 16, 2015

math
( 10 , - 52 ) Becouse : For x = 10 y = - 5 x - 4 = - 5 * 10 - 4 = - 50 - 4 = - 54
April 16, 2015

Geometry
The interior angles of a triangle always add up to 180° x + x + 10° + 2 x - 6° = 180° 4 x + 4° = 180° Subtract 4° to both sides 4 x + 4° - 4° = 180° - 4° 4 x = 176° Divide both sides by 4 4 x / 4 = 176° / 4 x = 44° Angles...
April 8, 2015

algebra
In google type : Systems Matrix Calculator When you see list of result click on : Online calculator. Linear equations solver: Matrix solution. When page be open type your coefficients 1 , 3 , 2 , 3 2 , - 1 , - 3 , - 8 5 , 2 , 1 , 9 and click opštion : Solve the system. ...
April 7, 2015

ALGEBRA /116
-5 x / 7 - 2 > - 1 Multiply both sides by - 1 _______________________________________ Remark : When you multiply or divide each side of the inequality by a negative number, you have to reverse the inequality symbol. ______________________________________ 5 x / 7 + 2 < 1 ...
April 7, 2015

algebra/116
Put x and y values into equation : y = 6 x - 6 1. x = 0 , y = - 6 y = 6 x - 6 y = 6 * 0 - 6 = 0 - 6 = - 6 Correct x = 12 , y = 3 y = 6 x - 6 y = 6 * 12 - 6 = 72 - 6 = - 66 Not correct One correct set and one uncorrect set. So ansver 1 is not correct. 2. x = 0 , y = - 6 y = 6 x...
April 7, 2015

math
( 3 / 4 ) * ( 7 / 8 ) = ( 3 * 7 ) / ( 4 * 8 ) = 21 / 32
April 4, 2015

calculus
W = Width L = Length Draw rectangle W x L Divde rectangle into thirds with two lines parallel with width. Outside fance perimeter = 2 W + 2 L Inside fance length = 2 W Total cost : ( 2 W + 2 L ) * 10 $ + 2 W * 20 $ = 400 $ ( 2 W + 2 L ) * 10 + 2 W * 20 = 400 20 W + 20 L + 40 W...
April 3, 2015

math
39 = 3 * 13
April 2, 2015

math
a = First number b = Second number The sum of digit = 9 a + b = 9 Subtract b to both sides a + b - b = 9 - b a = 9 - b The different of digit = 5 b - a = 5 b - ( 9 - b ) = 5 b - 9 + b = 5 2 b - 9 = 5 Add 9 to both sides 2 b - 9 + 9 = 5 + 9 2 b = 14 Divide both sides by 2 2 b...
April 2, 2015

math help
x + y = 2 Subtract x to both sides x + y - x = 2 - x y = 2 - x 3 x ^ 2 + 4 x y + y ^ 2 = 6 3 x ^ 2 + 4 x ( 2 - x ) + ( 2 - x ) ^ 2 = 6 ________________________________ Remark : ( a - b ) ^ 2 = a ^ 2 - 2 a b + b ^ 2 So : ( 2 - x ) ^ 2 = 2 ^ 2 - 2 * 2 *x + x ^ 2 ...
March 31, 2015

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