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August 20, 2014

August 20, 2014

Total # Posts: 1,692

**integrated math**

y=210-6b
*January 10, 2011*

**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 ...
*January 10, 2011*

**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]
*January 10, 2011*

**math**

|60| = 60 |-60| = 60 60-60=0
*January 10, 2011*

**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
*January 8, 2011*

**math**

copper/nickel=3.9/1.2=3.25 500*3.25=1625 kg of copper
*January 8, 2011*

**Math**

7/20=(7*5)/(20*5)=35/100=0.35
*January 7, 2011*

**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
*January 6, 2011*

**math**

1meter=100cm=10^2cm 1m^3=(10^2)^3=10^6 cm^3=1000000 cm^3
*January 6, 2011*

**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.
*January 6, 2011*

**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)]
*January 6, 2011*

**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
*January 6, 2011*

**math**

8.7
*January 2, 2011*

**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
*December 21, 2010*

**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
*December 21, 2010*

**art**

Go to images.google com and type scgraffito any you can see some examples.
*December 21, 2010*

**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)
*December 21, 2010*

**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
*December 21, 2010*

**math**

x+9-6=7 x+3=7 x=7-3 x=4
*December 21, 2010*

**MAth**

If your solution x=315 you solve it correctly.
*December 18, 2010*

**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.
*December 18, 2010*

**math**

liter is unit of volume not of force
*December 18, 2010*

**math**

1cm=(1/100)m 1m=100cm 100m=100*100=10000cm
*December 17, 2010*

**MATH**

-7+2=-5 |-5|=5 |-4|=4 5-4=1
*December 15, 2010*

**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.
*December 15, 2010*

**Aims math [help please very appreciated]**

15x-2x=21-4 13x=17 Divide wit 13 x=17/13
*December 15, 2010*

**5th math**

(1/4)*(2/2)=2/8 (1/4)=(2/8) (1/4)+(1/8)= (2/8)+(1/8) =3/8
*December 15, 2010*

**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-...
*December 10, 2010*

**math**

sqroot(5*1215)=sqroot(6075)=77.9423
*December 9, 2010*

**Math**

2/3=0.66666666 7/11=0.6363636 Larger is 0.67
*December 6, 2010*

**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
*December 6, 2010*

**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
*December 5, 2010*

**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
*December 4, 2010*

**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(...
*December 4, 2010*

**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.
*December 1, 2010*

**Math**

71%=71/100=0.71 510*0.71=362.1 million square kilometers
*November 30, 2010*

**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....
*November 29, 2010*

**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...
*November 25, 2010*

**math**

33=3*11 65=5*13 33/65=(3*11)/(5*13)
*November 23, 2010*

**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
*November 21, 2010*

**math**

C=d*pi= 200*pi= 200*3.14= 628 meters
*November 21, 2010*

**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...
*November 21, 2010*

**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...
*November 21, 2010*

**6th grade Math**

11-7=4 4/11 not red
*November 20, 2010*

**Math**

s=v^1/3=third root(v) s=third root(729)=9
*November 20, 2010*

**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
*November 19, 2010*

**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...
*November 19, 2010*

**Algebra**

z-5-7(z-3)+3(5z+1)=z-5-7z+21+15z+3 =9z+19
*November 19, 2010*

**math**

50/20=2.5lb
*November 19, 2010*

**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$
*November 19, 2010*

**algebra**

5a+7a^2+3a= 8a+7a^2= a(8+7a)
*November 18, 2010*

**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
*November 18, 2010*

**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
*November 17, 2010*

**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)
*November 17, 2010*

**Math**

24=2^3*3
*November 17, 2010*

**Math**

3*4*2*(x^2*x*x^3)=24x^6
*November 17, 2010*

**math**

1000/10=100 tens in 1000 6000/100=60 hundreds in 6000 2000000/1000=2000 thousands in 2000000
*November 11, 2010*

**8th grade math**

100%-93.2% = 6.8%
*November 10, 2010*

**math**

1.035^20.148791684000665883041124279516 =2 2*1000=2000
*November 9, 2010*

**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....
*November 9, 2010*

**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)
*November 9, 2010*

**math**

34/123.08 3400:12308=0.276243 34000 -24616 ------- 93840 -86156 ------- 76840 -73848 -------- 29920 -24616 --------- 53040 -49232 ---------- 38080 -36924 ----------- 1156
*November 8, 2010*

**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
*November 8, 2010*

**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
*November 7, 2010*

**math **

Correct OR 3*20=60
*November 6, 2010*

**math**

0.5*100%= 50%
*November 6, 2010*

**Math**

s=10 5s=5*s=5*10= 50
*November 5, 2010*

**math**

sqtr(1575^4)=1575^2=2480625 Becouse sqrt of fourth power is two
*November 5, 2010*

**calculus**

Go to calc101 com Click derivates and type x e^(-2x) with space betven x and e^(-2x) and click DO IT
*November 5, 2010*

**calculus**

In google type "library wolfram step by step derivate" then click for first term in list.
*November 5, 2010*

**Math**

5%=5/100=0.05 1000*(1+0.05)^19=1000*1.05^19= =1000*2.5269501953756382228051721572876 =2526.9501953756382228051721572876
*November 5, 2010*

**math**

2.59*100%=259%
*November 4, 2010*

**math**

(68*13)/100=8.84
*November 4, 2010*

**Math**

n ÷ d is n divide with d
*November 4, 2010*

**math**

0.7*100%=70%
*November 4, 2010*

**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.
*November 4, 2010*

**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.
*November 4, 2010*

**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*...
*November 3, 2010*

**math**

1 yard= 3 feet 29029/3=9676.333yard
*November 3, 2010*

**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
*November 3, 2010*

**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
*November 3, 2010*

**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
*November 3, 2010*

**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
*November 3, 2010*

**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
*November 3, 2010*

**Math**

3*0.25 6 15 ---- .75 You must deducut 2 decimal places becouse 0.25 have 2 decimales. 3*0.25=0.75
*November 3, 2010*

**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
*November 2, 2010*

**math**

(2h-6)=2*(h-3)
*November 2, 2010*

**Math **

3!=6 3!+(6*5)-(5+0)= 31 6+30-5=36-5=31
*November 2, 2010*

**Math**

3*n-24=12+2*n 3*n-2*n=12+24 n=36
*November 1, 2010*

**math**

30° One example of circle divided into 12 equal parts is watch. Watch have 360°divided into 12 equal parts.
*November 1, 2010*

**MATH**

(24*7)/8= 168/8= 21
*November 1, 2010*

**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
*November 1, 2010*

**math**

Also in google type "wikipedia quadratic equation" In this case when Discriminant is negative equation have two distinct complex roots.
*November 1, 2010*

**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
*November 1, 2010*

**Math**

For more information in google type "wikipedia arithmetic progression"
*November 1, 2010*

**sports math**

20=3+3+3+11 20=3+3+5+9 20=3+3+5+7 20=3+3+7+7
*November 1, 2010*

**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
*October 31, 2010*

**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&...
*October 31, 2010*

**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
*October 31, 2010*

**basic math**

27%=(27/100) 27%*500=(27/100)*500 =(27*500)/100 =27*5=135 Correct answer
*October 31, 2010*

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