Sunday
April 20, 2014

Posts by Bosnian


Total # Posts: 1,610

math
Fist number= a Second number= a+1 Third number= a+2 a^2+(a+1)^2+(a+2)^2=194 (a+1)^2=a^2+2*a*1+1^2=a^2+2a+1 (a+2)^2=a^2*2a*2+2^2=a^2+4a+4 a^2+a^2+2a+1+a^2+4a+4=194 3a^2+6a+1+4=194 3a^2+6a+5-194=0 3a^2+6a-189=0 The exactsolutions of this equation are: a=7 and a=-9 Solution: Firs...

math
0<x<15cm x= larger of 0 and lesser of 15cm

Math/Trig
L=r*aplha alpha in radians L=7.7 alpha=pi/7 7.7=r*(pi/7) divide with (pi/7) r=7.7/(pi/7) r=(7.7*7)/pi r=53.9/3.1415926535 r=17,1569cm r=17.2cm

math
7/7=1

math help please!!
log(x-2)= 1-log(x+1) log(x-2)+log(x+1)=1 log(a)+log(b)=log(a*b) log(x-2)+log(x+1)=log((x-2)*(x-1)) 1=log(10) log((x-2)*(x-1))=log(10) So: (x-2)*(x+1)=10 x^2-2x+x-2=10 x^2-x-2=10 x^2-x-2-10=0 x^2-x-12=0 Exact solutions of this equation is: -3 and 4 Negative numbers have not log...

math log
Third row have typefeler Correct formula is: log(a+b)=log(a)+log(b)

math log
7.2=36/5 36=6*6 log(a+b=log(a)+log(b) log(36)=log(6)+log(6)=2*log(6) log(a/b)=log(a)-log(b) log(36/5)=2*log(6)-log(5) log(6)=m log(5)=n log(36/5)=log(7.2)=2m-n

college math 209
In google type "quadratic equation online" when you see list of results click on: webgraphingcom/quadraticequation_quadraticformula.jsp Whenn this page be open in rectacangle type your equation,and click option solve it and you will see solution Step-by-step

college math 209
In google type "quadratic equation online" when you see list of results click on: webgraphingcom/quadraticequation_quadraticformula.jsp When this page be open in rectacangle type your equation,and click option solve it You will see solution Step-by-step

Math/Trigonometry
1 revolution=2*pi radians 1.6*2*3.1415926535=10,0530964912 radians nearest tenth=10 radians

Math/Trig
Area of circle: A=r^2*pi Area of your sector=r^2*pi*(125/360)=3^2*pi*125/360=9*pi*125/360 =9*3.1415926535*125/360 =3534,2917351875/360 =9,8174770421875 m^2

math
In google type "functions graphs online" When you see list of results click on: rechneronline.de/function-graphs/ When page be open type your fuction and click option Draw

11th grade math
Go to: en wikipedia org And type:Absolute value You will see everything about Asolute Value including graph.

math
In google type "composite numbers " When you see list of results click on en.wikipedia and you can find everything about composite numbers

math
1+4+s= 5+s

math
-3(3x+15)-(10+x)=35 -9x-3*15-10-x=35 -9x-45-10-x=35 -10x-55=35 -10x=35+55 -10x=90 x=90/(-10) x=-9

math
Standard notation is just the number like 248 or 822 or.... and so on, or it is a number completely written out without any shortcuts.

integrated math
y=210-6b

math
In mathematics, an irrational number is any real number which cannot be expressed as a fraction a/b 30=2*3*5 sqroot(30)=sqroot(2)*sqroot(3)*sqroot(5) sqroot(2), sqroot(3) and sqroot(5) is irrational numbers. sqroot(30) is irrational too. The real numbers are the numbers that c...

Math
2*log(x)-log(4)-log(3)+log(x)=2logx+logx-log4-log3 =3*log(x)-[log(4)+log(3)] log(x^n)=n*log(x) 3*log(x)=log(x^3) log(a)+log(b)=log(a*b) log(4)+log(3)=log(4*3)=log(12) log(a)-log(b)=log(a/b) 3*log(x)-[log(4)+log(3)]=log[(x^3)/12]

math
|60| = 60 |-60| = 60 60-60=0

math
You also can write fraction: 3.9/1.2=x/500 1.2*x=3.9*500 1.2*x=1950 Divide with 1.2 x=1950/1.2 x=1625

math
copper/nickel=3.9/1.2=3.25 500*3.25=1625 kg of copper

Math
7/20=(7*5)/(20*5)=35/100=0.35

math
1meter=100 centimeters=10^2 centimeters 1m=10^2cm 1m^3=(10^2)^3=10^6 cm^3=1000000 cm^3 1kilometer=1000meters=10^3 meters 1km^2=(10^3)^2=10^6 cm^2=1000000 cm^2

math
1meter=100cm=10^2cm 1m^3=(10^2)^3=10^6 cm^3=1000000 cm^3

math
1 liter= 1cubic decimeter 1dm= 10cm 1dm=10^2cm 1L=1dm^3=(10^2)^3=10^6 cm^3=1000000 cm^3 2L=2*10^6 cm^3=2000000 cm^3 One litre of water has a mass of one kilogram. Two litre of water has a mass of 2 kilograms.

Math (algebra)
(y-1)/2u+x=m (y-1)/2u=m-x y-1=2u*(m-x) Divide with (m-x) 2u=(y-1)/(m-x) Divide with 2 u=(y-1)/[2*(m-x)]

Math 3
11*13=143 6/11=(6*13)/143=78/143 2/13=(2*11)/143=22/143 6/11+2/13=(78/143)+(22/143)=100/143

math
8.7

8th grade math
3x+3y=-6 3y=-6-3x Divide with 3 y=-2-x 7x+4y=1 7x+4*(-2-x)=1 7x-8-4x=1 3x-8=1 3x=1+8 3x=9 Divide with 3 x=9/3 x=3 y=-2-x y=-2-3 y=-5 x=3 y=-5 Cheking of results: 3x+3y=3*3+3*(-5)=9-15=-6 7x+4y=7*3+4*(-5)=21-20=1

math
x+5y=-4 y=3x-4 x+5*(3x-4)=-4 x+15x-20=-4 16x=-4+20 16x=16 Divide wth 16 x=1 y=3x-4 y=3*1-4 y=3-4=-1 x=1 y=-1 Cheking of result: y=3x-4 -1=3*1-4 -1=3-4 -1=-1 x+5y=-4 1+5*(-1)=-4 1-5=-4 -4=-4

art
Go to images.google com and type scgraffito any you can see some examples.

Math Problem Solving
6n+(8n-2n)+3/2=6n+8n-2n+3/2 6n+8n-2n=14n-2n=12n 6n+8n-2n+3/2=12n+(3/2)

math
A=(1/2)*a*h A=255 - Area h=15 - hight a - lenght of base 255=(1/2)*a*15 Multiply with 2 510=15*a Divide with 15 a=510/15=34 a=34ft Checking of results: A=(1/2)*a*h A=(1/2)*34*15 A=(1/2)*510 A=255ft squared

math
x+9-6=7 x+3=7 x=7-3 x=4

MAth
If your solution x=315 you solve it correctly.

Math
A secant line of a curve is a line that (locally) intersects two points on the curve. You must know equation of curve f(x) if you want to find secant line.

math
liter is unit of volume not of force

math
1cm=(1/100)m 1m=100cm 100m=100*100=10000cm

MATH
-7+2=-5 |-5|=5 |-4|=4 5-4=1

Math
In google type: "quadratic equation online " When you see results clik on webgraphingcom/quadraticequation_quadraticformula.jsp type you equation and click solve it and you will see solution step by step.

Aims math [help please very appreciated]
15x-2x=21-4 13x=17 Divide wit 13 x=17/13

5th math
(1/4)*(2/2)=2/8 (1/4)=(2/8) (1/4)+(1/8)= (2/8)+(1/8) =3/8

math
2x^2 -12x +23=2*(x^2-6x+23/2) (x-a)^2= x^2-2ax+a^2 (x-3)^2= x^2-2*3*x+3^2= x^2-6x+3^2 2*(x^2-6x+23/2)= =2*(x^2-2*3*x +3^2+ 23/2 -3^2) =2(x^2-6x+3^2)+2*(23/2)-2*(3^2) =2*(x-3)^2+23-2*9 =2*(x-3)^2+23-18 =2*(x-3)^2 +5 Proof: 2*(x-3)^2+5=2*(x^2-2*3*x+3^2)+5 =2*(x^2-6x+9)+5 =2x^2-1...

math
sqroot(5*1215)=sqroot(6075)=77.9423

Math
2/3=0.66666666 7/11=0.6363636 Larger is 0.67

Math
a=first number b=second number a+b=44 b=5+2a a+b=a+5+2a =3a+5= 44 3a+5=44 3a=44-5 3a=39 Divided with 3 3a/3=39/3 a=13 b=5+2a b=5+2*13 b=5+26 b=31 a+b=13+31=44

math
(ã2y*ã8y*ã3=ã(2*8*y^2)*ã3=ã(16*y^2)*ã3 =-4y*ã3 OR =4y*ã3 Becouse ã16= -4 OR 4 and ãy^2=y

Math
x^2+5x-3x-15=9 x^2+2x=9+15 x^2+2x=24 x^2+2x+1=24+1 (x+1)^2=25 Becouse: (x+1)^2=x^2+2x+1 x+1=sqroot(25) x+1=5 and x+1=-5 x+1=5 x=5-1=4 x+1=-5 x=-5-1=-6 Solutions is: x=4 and x=-6

Math
a=shorter leg b=longer leg c=hypotenuse a=b-14 c^2=a^2+b^2 26^2=(b-14)^2+b^2 676=b^2-2*b*14+14^2+b^2 676=2b^2-28b+196 676-196=2(b^2-14b) 480=2(b^2-14b) Divide with 2 240=b^2-14b b^2-14b=240 b^2-14b+7^2=240+7^2 Becouse: (b-7)^2=b^2-14b+7^2 (b-7)^2=240+49 (b-7)^2=289 b-7=sqroot(...

math
3x^2+11x+5=15 3x^2+11x+5-15=0 3x^2+11x-10=0 ax^2+bx+c=0 a=3 , b=11 , c=-10 In google type "square equation online" and select some site.

Math
71%=71/100=0.71 510*0.71=362.1 million square kilometers

math
Area=a*b A=a*b=12 Area=12 12=a*b Divide with b 12/b=a a=12/b Perimeter=2*a+2*b P=25 25=2*(12/b)+2*b 25=(24/b)+2*b Mulitiple with b 25b=24+2*b^2 Solutions of this equation is: b=[sqroot(433)]/4+(25/4) =5.202163 +6.25=11.452163 a=12/b=(12/11.452163)=1.047837 a=1.047837 b=11.4521...

math
The angles of a parallelogram satisfy the identities: A=C B=D A+B=180° A+B+C+D=360°. C=A=(2x+25) D=B=(3x-5) A+B=180° 2x+25+3x-5=180° 5x+20°=180° 5x=180°-20° 5x=160° x=160°/5 x=32° A=C=(2x+25°)=2*32°+25°=64°+25°=89...

math
33=3*11 65=5*13 33/65=(3*11)/(5*13)

Math
18=2*3*3 24=2*2*2*3 18/24=(2*3*3)/(2*2*2*3)=3/(2*2)=3/4 9=3*3 12=2*2*3 9/12=(3*3)/(2*2*3)=3/(2*2)=3/4 15=3*5 20=2*2*5 15/20=(3*5)/(2*2*5)=3/(2*2)=3/4 6=2*3 9=3*3 6/9=(2*3)/(3*3)=2/3

math
C=d*pi= 200*pi= 200*3.14= 628 meters

Algebra
-y=4-3x Multiply with(-1) y=3x+4 (Slope=3) Remember, any two perpendicular lines are negative reciprocals of each other. So if you're given the slope of 3, you can find the perpendicular slope by this formula: mp=(-1)/m where: m-slope of line y=3x+4 mp is the perpendicular...

Math
F-lenght of first size S-lenght of second size T-lenght of third size S=F+3 T=(4/5)*F F+S+T=F+F+3+(4/5)F=384 2F+3+(4/5)F=384 2F+(4/5)F=384-3 2F+(4/5)F=381 Multiply with 5 10F+4F=381*5 14F=1905 Divide with 14 F=1905/14 S=F+3=(1905/14)+(42/14) Becouse (42/14)=3 S=1947/14 T=(4/5)...

6th grade Math
11-7=4 4/11 not red

Math
s=v^1/3=third root(v) s=third root(729)=9

Math
a1=34-9*d Becouse nth member in arithmetic progression is: an=a1+(n-1)*d a10=a1+(10-1)*d a10=a1+9*d a10-9*d=a1 a a1=a10-9*d a1=34-9*d an=a1+(n-1)*d a25=a1+(25-1)*d a25=a1+24*d a25=7+24*3 a25=7+72=79

Math
The sum of members of a arithmetic progression is: Sn=(n/2)*[2a1+(n-1)*d] a1-first number in arithmetic progression d-common difference of successive members n-numbers of members In this case: n=20 , (n/2)=10 , n-1=19 a1=a10-9*d a1=34-9*d Sn=(n/2)*[2a1+(n-1)*d] =10*[2*(34-9*d)...

Algebra
z-5-7(z-3)+3(5z+1)=z-5-7z+21+15z+3 =9z+19

math
50/20=2.5lb

math
30%=30/100 (30*74)/100=22.2 74-22.2=51.8$ OR 30%=30/100=0.3 1-0.3=0.7 0.7*74=51.8$

algebra
5a+7a^2+3a= 8a+7a^2= a(8+7a)

Algebra 2
an=a1+(n-1)*d a8=a1+(8-1)*5 a8=a1+7*5 a8=a1+35 a8-35=a1 a1=a8-35 a1=56-35 a1=21 So this arithmetic sequence is: 21,26,31,36,41,46,51,56

arithmetic
In wikipedia type "Arithmetic progression" you wil find everythink about Arithmetic progression Sn=sum of numbers Sn=(n/2)*[2a1+(n-1)*d] In this case: n=40 a1=19 d=5 S40=(40/2)*[2*19+(40-1)*5]=20*(38+39*5)=20*(38+195)=20*233=4660

Algebra II
(ã3mn)^9=(ã3)^9*(mn)^9 =3^(9/2)*(mn)^9 =3^(9/2)*m^9*n^9 Becouse: ã3=3^(1/2) (3^(1/2))^9= 3^(9/2)

Math
24=2^3*3

Math
3*4*2*(x^2*x*x^3)=24x^6

math
1000/10=100 tens in 1000 6000/100=60 hundreds in 6000 2000000/1000=2000 thousands in 2000000

8th grade math
100%-93.2% = 6.8%

math
1.035^20.148791684000665883041124279516 =2 2*1000=2000

math
1000*1.035^n=2000 Divide with 1000 1.035^n=2 n*log(1.035)=log(2) Divide with log (1.035) n=log(2)/log(1.35) =20.148791684000665883041124279516 OR 1000*1.035^n=2000 Divide with 1000 1.035^n=2 n*ln(1.035)=ln(2) Divide with ln (1.035) n=ln(2)/ln(1.35)=20.1487916840006658830411242...

Math
ln[e^5x/[x*(x^4+1)]] =ln(e^5x)-ln([x)*(x^4+1)] =5x-[1n(x)+ln(x^4+1] =5x-ln(x)-ln(x^4+1)

math
34/123.08 3400:12308=0.276243 34000 -24616 ------- 93840 -86156 ------- 76840 -73848 -------- 29920 -24616 --------- 53040 -49232 ---------- 38080 -36924 ----------- 1156

calculus
Go to site: calc101 com Click option derivates Then type x*cos[x] And clik option DO IT You will see solution STEP-BY-STEP

Math
a-lenght of two sides of triangle c- lenght of third side of triangle c=2a-4 Perimeter: P=a+a+c= 2a+(2a-4)= 2a+2a-4= = 4a-4 =4(a-1) P=16 4(a-1)=16 Divided with 4 a-1= 16/4 a-1= 4 a=4+1= 5 a=5 meters c=2a-4 = 2*5-4 = 10-4= 6 c=6 meters Perimeter=a+a+c=5+5+6=10+6= 16 meters

math
Correct OR 3*20=60

math
0.5*100%= 50%

Math
s=10 5s=5*s=5*10= 50

math
sqtr(1575^4)=1575^2=2480625 Becouse sqrt of fourth power is two

calculus
Go to calc101 com Click derivates and type x e^(-2x) with space betven x and e^(-2x) and click DO IT

calculus
In google type "library wolfram step by step derivate" then click for first term in list.

Math
5%=5/100=0.05 1000*(1+0.05)^19=1000*1.05^19= =1000*2.5269501953756382228051721572876 =2526.9501953756382228051721572876

math
2.59*100%=259%

math
(68*13)/100=8.84

Math
n ÷ d is n divide with d

math
0.7*100%=70%

Algebra
(x-4)^5(x^2-11)(x^2+49)=0 (x-4)^5*(x^4-11x^2+49x^2-539) =(x-4)^5*(x^4+38x^2-539) (x-4)^5* 5 degre (x^4+38x^2-539) 4 degre 5+4=9 Polynome have 9 degres and have 9 roots.

7th grade
Most important events in 1914 was Assassination in sarajevo and consequence of assassination WWI (World War I) Firs in google type assassination in sarajevo 1914 After you read some pages of that events in google type WWI and read abut that war.

math grade 11
Slope of any function is first derivate of that function. Quadratic function in your case have first dervate: 3*2*x+4=6*x+4 Linear function in your case have first dervate: m Line will be tangent of quadratic parabola when first derivates is egual. m=6*x+4 m*x-5=(6*x+4)*x-5=6*...

math
1 yard= 3 feet 29029/3=9676.333yard

Math
8/4=2 12/6=2 Area of first rectacangle: A1=4*6=24 Area of second rectacangle: A2=8*12=96 96/24=4 Scale for dimensions 2 Scale for areas 4

Math
y-intercept f(0)=9*0-0^3=0-0=0 x-intercept 9x-x^3=x*(9-x^2)=0 First solution is x=0 Next solution 9-x^2=0 x^2=9 x=+/- sqroot(9)=+/-3 You have 3 solutions x1=0 X2=-3 x3=3

math
Perimeer of recatacalgle: P=2*a+2*b P=2*(a+b) Perimeter is 16ft 16=2*(a+b) Divided with 2 8=a+b a+b=8 You mas fid numbers a and b which have sum 8. That is a=1 and b=7 a=2 and b=3 a=3 and b=5 a=4 and b=4

Math
Diagonal: d=sqroot(a^2+a^2) d=sqroot(2*a^2) d=sqroot(2)*a a=15cm d=1.41421*15 Becouse sqroot(2)=1.41421 d=21.21315 cm

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