Thursday
April 24, 2014

Posts by Bosnian


Total # Posts: 1,610

Math
You also multiply that on this way: 3.0*.25 60 150 ---- .750 3.0 have 1 decimal place .25 have 2 decimal places Total numbers of decimal places is 1+2=3 Thats why you must deduct 3 decimal places in this case. 3.0*.25 =0.750 =0.75

Math
3*0.25 6 15 ---- .75 You must deducut 2 decimal places becouse 0.25 have 2 decimales. 3*0.25=0.75

Math
326^2=106276 106276=2*a*0.83 Divided with 0.83 (106276/.83)=2*a 2*a=128043,3735 Divided with 2 a=64021,68675

math
(2h-6)=2*(h-3)

Math
3!=6 3!+(6*5)-(5+0)= 31 6+30-5=36-5=31

Math
3*n-24=12+2*n 3*n-2*n=12+24 n=36

math
30° One example of circle divided into 12 equal parts is watch. Watch have 360°divided into 12 equal parts.

MATH
(24*7)/8= 168/8= 21

Math
A=(1/2)*b*h A=(b*h)/2 Multiple with 2 2*A=b*h Divided with h (2*A)/h= b b=2A/h

math
Also in google type "wikipedia quadratic equation" In this case when Discriminant is negative equation have two distinct complex roots.

math
Discriminant is: Ä=b^2-4*a*c In this case: a=-3 b=-4 c=-3 Ä=(-4)^2-4*(-3)*(-3) =16-4*9 =16-36 =-20 Go to en wikipedia and type "Discriminant" Heare you have all about Discriminant

Math
For more information in google type "wikipedia arithmetic progression"

sports math
20=3+3+3+11 20=3+3+5+9 20=3+3+5+7 20=3+3+7+7

Math
a=leght of side of original square b=leght of side of new square b=a+7 a=b-7 Area of new square is: A=b^2=121 b=sqroot(121)=11 a=b-7=11-7=4 Length of a side of the original square is 4

math
One of angle in right angle triangle is 90° Other two angles is x+17 Sum of angles in triangle is 180°. Thats mean: 90°+2*(x+17)=180° 2*(x+17)=180°-90°=90° 2*(x+17)=90° Divided with 2 x+17=(90°/2)=45° , x+17=45° x=45-17=28° x=28&...

ALgebra
a-b=7 , a=7+b a+b=25 (7+b)+b=25 (Becouse a=7+b) 7+2b=25 2b=25-7 2b=18 Divided with b=(18/2)=9 a=7+b=7+9=16 a=16 , b=9 a-b=16-9=7 a+b=16+9=25

basic math
27%=(27/100) 27%*500=(27/100)*500 =(27*500)/100 =27*5=135 Correct answer

algebra
48=6*8 56=7*8 (48/56)=(6*8)/(7*8)=6/7

Math
y=a*x^2+b*x+c 3*x^2+2*x+6=10 3*x^2+2*x+6=10 3*x^2+2*x+6-10=0 3*x^2+2*x-4=0 a=3 , b=2 , c=-4 x1=(-b-sqroot(b^2-4*a*c))/(2*a) x1=(-2-sqroot(2^2-4*3*(-4)/(2*3) =(-2-sqroot(4+48)/6 =(-2-sqroot(52))/6= =(-2-sqroot(4*13))/6 =(-2-2*sqroot(13))/6 =(-2/6)*((1+sqroot(13)) =(-1/3)*(1+3.6...

math
(4/3)=(b/21) Multiply with 21 21*(4/3)=b b=(21*4)/3 b=(84/3) b=28 28=4*7 21=3*7 (28/21)=(4*7)/(3*7)=(4/3)

math
3x^2-5*x+1=a*(x^2+2*b*x+b^2)+c Becouse): (x+b)^2=x^2+2*b*x+b^2 3x^2-5*x+1=a*x^2+2*a*b*x+a*b^2+c 3x^2-5*x+1= =a*x^2+(2*a*b)*x+(a*b^2+c) a*x^2=3*x^2 Divide with x^2 a=3 (2*a*b)*x=-5x Divide with x 2*a*b=-5 2*3*b=-5 6b=-5 Divide with 6 b=(-5/6) a*b^2+c=1 3*(-5/6)^2+c=1 (3*25/36)+...

math
When: y=a*x^2+b*x+c Then Discriminant is: Ä=b^2-4*a*c Go to en.wikipedia organd type "Dioscriminant"

Calculus
ln(1/x)= ln(1)-ln(x) ln(1))=0 ln(1)-ln(x)=0-ln(x)= -ln(x) ln(1/x)=-ln(x)

calculus
V-Volume V=20 V=L^2*h L^2*h=20 Divide with (L^2) h=20/(L^2) Area of square is L^2 Areao of rectacangle L*h Total price=2*Area of square*(2$)+4*Area of rectacangle*(3$) P-Price P=2*(L^2)*2+4*L*h*3 =4*L^2+12*L*20/(L^2) =4*L^2+240*L/(L^2) =4*L^2+240/L (dP/dL)=4*2*L+240*(-1)/(L^2)...

math
7-side polygon is heptagon or septagon. Go to wikipedia and type "heptagon" On en.wikipedia you have all about heptagon. Area is: A=3.633912444*a^2 a is side lenght Area of smaller heptagon is: A1=3.633912444*(a1)^2 a1 lenght side of smaller polygon Larger side lengh...

math
Sometimes you easy find formulas for homeworks probles.Just in wikipedia type what you need. In this case type sphare and you will have all about spare. Sometime use wikipedija.

math
x^2-3x-4-x^2-11x=24+4 -14x=28 Divided with -14 x=28/(-14)=-2

Calculus
Proof that is minimum. Function have minimum if (dy/dx)=0 and (d^2y/dx^2)>0 If second derivate greater than zero. Second derivate is derivate of first derivate. In this case: (d^2y/dx^2)=d(2x)/dx=2>0 That is minimum

Calculus
(dy/dx)=2x+a Funcktion have extreme value where is (dy/dx)=0 2x+a=0 ,2x=-a, Divided with 2, x=-(a/2) For x=7 , 7=(-a/2) , Multipled with 2 7*2=-a , 14=-a , Multilpled with (-1) a=-14 y=x^2+ax+b x=7 y=6 a=-14 6=(-a/2)^2+a*(-a/2)+b 6=(14/2)^2-14*(-14/2)+b 6=7^12-14*7+b 6=49-98+b...

MATH
B=3A , C=6A-1 Sum of angles in triangle is 180° A+B+C=180° A+3A+6A-1=180 10A-1=180, 10A=180+1=181 Divided with 10 A=18.1° B=3A= 3*18.1=54.3° C=6A-1= 6*18.1-1=108.6-1=107.6° A=18.1°=18+(0.1*60)= 18° 6´ Besouse 1°= 60´ B=54.3°=54+(...

College algebra
y=ax^3+bx^2+cx+d=a*(x-x1)*(x-x2)*(x-x3) where is x1,x2,x3 coordinates of x-intercepts In this case x1=4, x2=-3 and x4=2 y=a*(x-4)*(x+3)*(x-2) =a*(x^2-4x+3x-12)(x-2) =a*(x^2-x-12)*(x-2) For x=0 y=a*(-12)*(-2)=24*a= 12 Divide dwith 24 a=12/24=1/2 y=(1/2)*(x-4)(x+3)(x-2) =(1/2)*(...

geometry
Distance between 2 points is: L=sqroot((x2-x1)^2+(y2-y1)^2) Heare: x1=-4 y1=6 x2=3 y2=-5 L=sqroot((3-(-4))^2+(-5-6)^2) =sqroot((3+4)^2+(-11)^2) =sqroot(7^2+(-11)^2) =sqrot(49+121) =sqroot(170)

Geometry
Sum of ratios is: 4+5+6=15 A=(4/15)*180°=(4*180°/15)=(720°/15)=48° B=(5/15)*180°=(180°/3)=60° Becouse (5/15)=(1/3) C=(6/15)*180°=(6*180°/15)=(1080°/15)=72° A= 48° , B= 60° , C=72° A+B+C=48°+60°+72°=180°

Geometry
Sum of ratios is: 4+5+6=15 A=(4/15)*180°=(4*180°/15)=(720°/15)=48° B=(5/15)*180°=(180°/3)=60° Becouse (5/15)=(1/3) C=(6/15)*180°=(6*180°/15)=(1080°/15)=72° A= 48° , B= 60° , C=72° A+B+C=48°+60°+72°=180°

Algebra 1
x^2-6x(3-6x)=x^2-18*x+36*x^2=37x^2-18x =x*(37x-18) Solutions y=0 if x=0 and 37x-18=0 37x=18 Divided wit 37 x=(18/37)

Math
(3/4)*1.17=(3*1.17)/4= 3.51/4 = 0.8775h 0.8775*60=52.65 min 52+(0.65*60)= =52 min 39 sec

geometry b
90°=(360°/4) OR 360°=4*90° Area of circle is: 4*36=144

:( math
Sorry my first ansver is wrong. I think that he come back with 24$. Wrong. Sorry. He have 24$ He pax stereo: 24*(3/5)=(72/5)= 14.4$ After that he have: 24-14.4= 9.6$ 1/6 of hat he spent for lunch. Price of lunch is 9.6/6=1.6$ Rest of money is 9.6-1.6=8$

:( math
M=Roberts money , R=Rest of money After he by stereo he have M-(3/5)M =(5/5)M-(3/5)M=(2/5)M , Becouse 1=(5/5) (1/6) of that he spent for lunch. (1/6)*(2/5)M=(2/30)M=(1/15)M Becouse (2/30)=(1/15) He totaly spent (3/5)M+(1/15)M =(9/15)M+(1/15)M=(10/15)M=(2/3)M Becouse (10/15)=(2...

math
When x=8 (x-8)=0 (x-8)*(x+6)=0*(x+6=0 When x=-6 (x+6)=0 (x-8)*(x+6)=(x-8)*0=0 Solutions is 8 and -6

Algebra ( Check +Help please)
33w=11w+(24*11) 33w=11w+264 33w-11w=264 22w=264 w=(264/22)= 12

algebra
In triangle you must have 3 elements. 3 sides OR 2 sides and 1 angle OR 1 side and 2 angles You can not solve triangle with 2 elements.

algebra II
10^7=10.000.000 8.8*10.000.000= 88.000.000

math
(ab)^2= a^2*b^2

Math
In google type "quadratic equation" Then click on en.wikipedia link which will appered. On this en.wikipedia page you have all about quadratic equation.

Math
Ä is Greek letter Delta(letter like triangle). y=ax^2+bx+c In your case a=k+1 , b=2k , c=k-1 Ä=b^2-4*a*c Ä=(2k)^2-4*(k+1)*(k-1) =4k^2-4*(k^2+k-k-1)=4k^2-4*(k^2-1) =4k^2-4k^2-(-4)=0+4=4 You equatin have 2 real roots

Math
You must calculate Discriminant Ä For quadratic equation: ax^2+bx+c , Ä=b^2-4*a*c If the discriminant is positive, then there are two distinct roots. If the discriminant is zero, then there is exactly one distinct real root, sometimes called a double root. If the dis...

math
3(-p)*(-2q)=(-3p)*(-2q)= 6pq Becouse product of two negative numbers is positive number.

Math
final amount=31.000*(1+interes/100)^29 Becouse 5% = 5/100= 0.05 Final amount=31,000*(1+0.05)^29 =31,000*1.05^29 =31,000*4.116136=127600.216

algebra
(w+p)(w^2-wp+p^2) =w^3-w^2*p+w*p^2+p*w^2-w*p^2+p^3 =w^3+p^3

5th math
3.67 is less of 3.7 3.67=367/100 3.7=370/100 367 is less of 370 3.67 is less of 3.7

math
(1/3)+(1/3)=2*(1/3)=(2/3)

Math
15-(-4)=15+4=19

math
One correction. My answer is correct, but I make one typefeler. 24^2=576 not 676 D=sqroot(24^2 + 8^2)=sqroot(576+ 64) =sqroot(640)=sqroot(64*10) sqroot(64)=8 D=8*sqroot(10)

math
L=Lenght W=Width A=Area D=Diagonal L=3*W , A=L*W= 3*W*W= 3*W^2=192=3*W^2 3*W^2= 192 W^2=(192/3)=64 W=sqroot(64)= 8 W=8 L=3*W=3*8= 24 L=24 D=sqroot(L^2 + W^2) D=sqroot(24^2 + 8^2)=sqroot(676+ 64) =sqroot(640)=sqroot(64*10) sqroot(64)=8 D=8*sqroot(10)

math
5 3/4=5+(3/4)=5+(9/12)=(60/12)+(9/12)=69/12 2 5/6=2+5/6=2+(10/12)=(24/12)+(10/12)=34/12 (69/12)-(34/12)= 35/12=(24/12)+(11/12) =2+(11/12)= 2 11/12

Algebra
10*(-2c)*3=( -20c)*3= -60c

Algebra
4r(3r-7)= 4r*3r-4*7 =12r^2-28

math
y=ax+b=0 ax+b=0 ax= -b Divided with a x=(-b)/a

math
5r-5=2r-8-6 5r-2r= -8-6+5 3r=-14+5 3r=-9 Divided with 3 r=(-9)/3 r=-3

math
-(x-10)=7 -x+10=7 -x= 7-10=-3 -x=-3 Multiply -x with -1 and -3 with -1 x=3

algebra
THAT IS NOT CORRECT EQUATION!!! r/1=r 1-r/1+r=1-r+r=2/3 1=2/3 THAT IS NOT CORRECT

8th grade math
a+24=9a 24=9a-a 24=8a 8a=24 Divided with 8 a=3 Cheking: 3/(3+24)=3/(27)= 3/(3*9)= 1/9

algebra
-7x+5x=10-23+21 -2x=8 Divided with (-2) x=-4

geometry
Perimetre of pentagon=5*t where t=side lenght t=perimeter/5=(35/5)=7 t=7 Go to en.wikipedia org Type pentagon and you will have all about pentagon,including formula for Area.

math
1 5/9=1+5/9 1 2/9=1+2/9 1+5/9-(1+2/9)= 1+5/9-1-2/9 = 5/9-2/9 = 3/9= 1/3

math
2*x+c+1-31=0 2*x=31-1-c =30-c Divided with 2 x=(30-c)/2

arithmetic
(136,800,000/250,148,571 )*100% = 0.546875*100% = 54.6875%

math am I right?
-3/10= -30/100 (-30/100)-(5/100= (-35)/100 =(-5*7)/(5*20)= (-7)/20

math
9/12-8/12= 1/12

math
22=2*11 33=3*11 22/33=(2*11)/(3*11)= 2/3

Calculus 1
ã2 is square root Area=(1/2)*(1/2)*72=18

Calculus 1
h=6*sin(45‹)=6*(1/ã2)=6/ã2 a=12*12*cos(45)=12*(1/ã2)=12/ã2 A=(1/2)a*h=(1/2)6/ã2*12/ã2 =(1/2)*(1/ã2)/*1/ã2)*72=(1/2)*(1/)*72 =(1/4)*72= 18 Largest posible area= 18

Calculus 1
h-hight , a-thirth side of triangle al-angle ALPHA , A-area sin(al)=(h/6) , h=6*sin(al) cos(al)=(a/2)/6 =( a/12) , a=12*cos(al) A=(1/2)a*h=(1/2)*6*sin(al)*12*cos(al) =(1/2)*72*sin(al)*cos(al) =36*sin(al)*cos(al) =18*(2*sin(al)*cos(al))=18*sin(2al) =dA/dal)=18*2*cos(2al=0 , cos...

math
(4.000/0.5)=8.000

algebra
L=2W+6 Perimeeter=2W+2L=2*(W+L)=2*(W+2W+6) =2*(3W+6)=6W+12 Perimeter is 36 inches 6W+12=36 , 6w=36-12=24 Divided with 6 W=(24/6)=4 W=4 L=2W+6=2*4+6=8+6=14 L=14 Perimeter 2*(L+W)=2*(4+14)= 2*18= 36in

precalc
x*ln(x)-2x<0 x*ln(x)<2x Divided with x ln(x)<2 e^2=7.389 x<7.389 x*ln(x)-2x>0 x*ln(x)>2x Divided with x ln(x)>2 e^2=7.389 x>7.389

pre calc
(4^x2)^2=16x^4 (16x^4/1)*(1/4^5x)=16x^4*4^5x=64x^4*5^x

math
0.32=32*0.01 8.64=32*0.027 (0.32/8.64)=(32*0.01)/(32*.027)=(0,01/0.027)*(1000/1000)=(10/27)

math
t=30% of u t=0.3*u Remark 30%=(30/100)=0.3 u=60% of v u=0.6*v Remark 60%=(60/100)=0.6 t=0.3*u= 0.3*0.6*v= 0.18*v t=0.18*v t=18% of v Remark 0.18=(18/100)=18%

Math - Geometry
Numebers is previous number multiplied with 3 6th term 81*3=243 nth term an=a*r^(n-1) Remark: a=1 , r=3 an=1*3^(n-1) an=3^(n-1)

Math 7th grade
6 11/12=6+(11/12) 6*12=72 , 6=(72/12) 6+(11/12)=(72+11)/12= (83/12) 4 5/12=4+5/12 4*12=48 , 4=(48/12) 4+5/12=(48+5)/12= (53/12) 6 11/12-4 5/12=(83/12)-(53/12)=(30/12)= (5*6)/(2*6)=5/2

math grade 11
4ã7(2ã3+3ã6- ã7) =4*2*ã7*ã3 +4*3*ã7*ã6 -4*ã7*ã7 =8*ã21 +12*ã42 -4*ã49 =8*ã21+ 12*ã...

Math
Correct answer.

math
Perimeter is 2*L+2*W= 2*(L+W) L=5*W-15 Perimeter=2*(5*W-15+W)=2*(6*W-15) =12W-30=147 m ,147=12*W-30 147+30=12W , 12W=177 , W=177/12 L=5*(177/12)-15=(885/12)-(180/12) =(705/12) L=705/12 Remark 15=(180/12) Perimeter=2*(L+W)=2*((177/12)+(705/12)) =2*(882/12)=1764/12=147 m

math
(1/8)+x=(1/5) x=(1/5)-(1/8) (1/5)=(1/5)*(8/8)=(8/40) (1/8)=(1/8)*(5/5)=(5/40) x=(1/5)-(1/8)=(8/40)-(5/40)=(8-5)/40 =3/40

math
In My answer á mean Greek letter Alpha

math
Draw right triangle and high marked wid h, lenght of shadow marked wit s. Angle off 66° betwen horizontal line and sloping line mark with á. Then: tan(á)=h/s h=s*tan(á) h=20*tan(66°)=20*2.246037=44.92074ft

math
You can also in google type prime numbers chart and click on some of that links.

math
A prime number can be divided, without a remainder, only by itself and by 1. (It must be a positive whole number greater than 1) Prime nuber betwen 2 and 100 is: 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97

Algebra/Math
Question 8 y-7=0 y=7 For all values of x y=7 That is line parallel with x-axis 3x=5 (divided with 3) x=5/3 For all values of y x=5/3 That is line p0arallel with y-axis

Algebra/Math
Best way to check that is that you drive this lines in grid.Is enough 2 points for any lines. For question 5 draw lines (-2/3)x+4/3 and y=(-3/2)x+3 For question 6 draw lines (-1/4)x+1/2 and y=4x-3 For question 7 draw lines (2/3)x-4/9 and (2/3)x-11

Algebra/Math
Question 7 6x-9y=4 , -9y=-6x*4 (Divided with -9) y=(-6/-9)x-4/9 y=(2/3)x-4/9 Slope (2/3) (2/3)x-y=11 , y=(2/3)x-11 Slope (2/3) Parallel

Algebra/Math
Question 6 (1/2)x+2y=1 , 2y=(-1/2)x+1 (Divided with 2) y=(-1/4)x+1/2 Slope(-1/4) 4x-y=3 , y=4x-3 (Slope 4) Perpendicular

Algebra/Math
Sorry. Answer for question 5 is not correct. 2x+3y=4 , 3y=-2x+4 (Divided with 3) y=(-2/3)x+4/3 Slope (-2/3) 3x+2y=6 , 2y=-3x+6 (Divided with 2) y=(-3/2)x+3 Slope(-3/2)

Algebra/Math
Question 1-5: slope is tangens of angle betwen x-axis and line. Equation is: tan(alpha)=(y2-y1)/(x2-x1) Firs 5 question is O.K

math
27 1/3=27+(1/3) 27*3=81 27=(81/3) 27+(1/3)=(81/3)+(1/3)=82/3

computer science
You will see representation of this nuber in some other numbers system.

computer science
On your PC you have good calculator. Start¨Programs¨Accessories¨Calculator When you open Calculator clik on View, then click Scientific.In up left angle you have numbers systems Hex Dec Oct and Bin. Click Hex.Use numbers and letters in down right ...

math
If dimeter is 2m perimeter is diameter*pi 2*pi=2*3,14159=6,28318 m (3000/6,28318)=477.465 times

Pages: <<Prev | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | Next>>

Search
Members