Thursday

November 27, 2014

November 27, 2014

Total # Posts: 1,763

**math**

In google type: functions graphs online When you see list of results click on: rechneronline.de/function-graphs/ When page be open in blue recatacangle type: 1+sqr(x) in gray rectacangle type: (3+x)/3 and click option Draw
*March 30, 2011*

**Math**

90=2*45
*March 29, 2011*

**Math**

In google type: calc101 When you see list of results click on: Calc101com Automatic Calculus,Linear Algebra and Polynomials When page be open clik option: derivatives When this page be open in rectacangle type: -460+100Q-Q^2 In rectacangle with respect to: type Q in ...
*March 25, 2011*

**math**

In google type: "quadratic equation online" When you see list of results click on: Free Online Quadratic Equation Solver.Solve by Quadratic Formula When page be open in rectacangle type: 3b^2+b-10=0 and click option solve it You will see solution step-by-step
*March 23, 2011*

**Math **

In google type: Solver Solving a System of Linear Equations by Elimination When you see list of results click on: Solver Solving a System of Linear Equations by Elimination/Addition When page be open in rectacangles type your coefficients 1 row 2 10 58 2 row -14 8 140 and ...
*March 23, 2011*

**math**

Area=(1/2)*base*hight A=(b*h)/2 A=Area=132.54cm^2 b=base=9.4cm h=hight A=(b*h)/2 132.54=(9.4*h)/2 Multiply with 2 265.08=9.4*h Divide with 9.4 h=265.08/9.4 h=28.2 cm
*March 22, 2011*

**6th grade math**

A=5^2=5*5=25 m^2
*March 21, 2011*

**math**

Your function have y-intercept y= -17 For x=0 y= -x^2-8x-17= -0^2-8*0-17=0-0-17= -17 If you want to see graph with y-intercept in Display properties set: Range x-axis from -8 to 2 Range y-axis from -18 to 2
*March 21, 2011*

**math**

In google type: functions graphs online When you see list of results click on: rechneronline.de/function-graphs/ When page be open in blue recatacangle type: -x^2-8x-17 In Display properties set: Range x-axis from -8 to 2 Range y-axis from -8 to 2 Then click option Draw You ...
*March 21, 2011*

**math**

One of solutions is obviously: x=0
*March 20, 2011*

**math**

The slope of the tangent line is equal to the first derivative. You must find where is first derivative=0 In this case the tangent line is horizontal. In google type: calc101 When you see list of results click on: Calc101com Automatic Calculus,Linear Algebra and Polynomials ...
*March 20, 2011*

**Math**

In google type: "quadratic equation online" When you see list of results click on: Free Online Quadratic Equation Solver.Solve by Quadratic Formula When page be open in rectacangle type: 6x=x^2-6 and click option solve it You will see solution step-by-step
*March 19, 2011*

**math/ geomery**

That is the wrong answer. p=first diagonal=4 q=second diagonal=12 a=sqroot[(p/2)^2+(q/2)^2] a=sqroot[(4/2)^2+(12/2)^2] a=sqroot(2^2+6^2) a=sqroot(4+36) a=sqroot(40) a=sqroot(4*10) a=2*sqroot(10) OR: p^2+q^2=4a^2 Divide with 4 a^2=(p^2+q^2)/4 a=sqroot[(p^2+q^2)/4] a=sqroot(p^2+...
*March 19, 2011*

**math**

In google type: calc101 When you see list of results click on: Calc101com Automatic Calculus,Linear Algebra and Polynomials When page be open clik option: derivatives When this page be open in rectacangle type your equation and click options DO IT You will see solution step-by...
*March 17, 2011*

**math**

In google type: calc101 When you see list of results click on: Calc101com Automatic Calculus,Linear Algebra and Polynomials When page be open clik option: derivatives When this page be open in rectacangle type: x^2*e^x and click options DO IT You will see solution step-by-step...
*March 14, 2011*

**math**

You can check that. In google type: Circumference When you see list of results click on : Circumference-Wikipedia,the free encyclopedia
*March 14, 2011*

**math**

Answer of Ms.Sue is wrong. The circumference is the distance around a closed curve. Circumference is a special perimeter. The circumference of a circle is the length around it. The circumference of a circle can be calculated using the formulas: C=d*pi Wher d is diameter OR C=2...
*March 14, 2011*

**Math**

P=Perimeter A=Area a,b=sides of rectacangle P=2a+2b P=2(a+b) Divide with 2 P/2=a+b a+b=P/2 a+b=16/2 a+b=8 b=8-a A=a*b A=a*(8-a) A=8a-a^2 A=-a^2+8a Function have extreme value in point where first derivative=0 First derivative: dA/da=-2a+8 dA/da=0 -2a+8=0 8=2a Divide with 2 a=...
*March 10, 2011*

**Math**

In google type: calc101 When you see list of resultc click on: Calc101com Automatic Calculus,Linear Algebra and Polynomials When page be open clik option: derivatives When this page be open in rectacangle type: 3/(1+2(x^3)) and click options DO IT You will see solution step-by...
*March 10, 2011*

**Math/Algebra**

In google type: "quadratic equation online" When you see list of results click on: webgraphingcom/quadraticequation_quadraticformula.jsp In rectacangle type: y^2-4y-12=0 and click option solve it
*March 8, 2011*

**math please help**

In google type: math celebrity long division When you see list of results click on: Addition-Sbtraction-Multiplication-Long Division Calculator When page be open click option: Calculator In first rectacangle type 8 In second rectacangle type 1195 and click option: Long ...
*March 7, 2011*

**math**

(2x+3)*(5x-9)=(3x-6)*(5x+3) (2x+3)*(5x-9)=(5x+3)*(3x-6) 10x^2+15x-18x-27=15x^2+9x-30x-18 10x^2-3x-27=15x^2-21x-18 0=15x^2-10x^2+3x-21x+3x-18+27 5x^2-18x+9=0 If you want to know that solutions in google type: quadratic equation online When you see list of results click on: ...
*March 5, 2011*

** math**

In google type: calc101 When you see list of resultc click on: Calc101com Automatic Calculus,Linear Algebra and Polynomiasls When page be open clik option: derivatives When this page be open in rectacangle type: 7ln[x] and click options DO IT You will see solution step-by-step...
*March 3, 2011*

**5th grade math**

5=(5*5)/5=25/5 3=(3*5)/5=15/5 5 2/5=(25/5)+(2/5)=27/5 3 4/5=(15/5)+(4/5)=19/5 5 2/5-3 4/5=(27/5)-(19/5)=8/5= (5+3)/5=1 3/5 6=(6*10)/10=60/10 3=3*10)/10=30/10 6 1/10=(60/10)+(1/10)=61/10 3 4/10=(30/10)+(4/10)=34/10 6 1/10-3 4/10 =(61/10)-(34/10)=27/10= (20/10)+7/10= 2 7/10 10=(...
*March 3, 2011*

**math**

y-28=98 y=98+28 y=126
*March 3, 2011*

**math HELP PLS!**

(5*5)-(5/5)=25-1=24
*March 3, 2011*

**math**

c-68=78 c=78+68 c=146
*March 3, 2011*

**Math**

(1.9*10^4)*(8.4*10^5)= (1.9*8.4)*(10^4*10^5)= 15.96*10^9= 1.596*10*10^9= 1.596*10^10
*March 3, 2011*

**math**

2/5=(2*2)/(2*5)=4/10=0.4
*March 2, 2011*

**math**

(65*100%)/70=6500%/70=92.85714%
*March 2, 2011*

**Math**

Delete: V2/V1=8
*March 2, 2011*

**Math**

V1/V2=8
*March 2, 2011*

**Math**

Diameter=2*Radius Radius=Diameter/2 Radius of first sphere R1=12 Radius of second sphere R2=D2/2=12/2=6 R1/R2=12/6=2 R1/R2=2 Area of sphere=4*pi*R^2 Area of first sphere A1=4*pi*12^2= 4*pi*(2*6)^2=4*pi*4*6^2 Area of second sphere A2=4*pi*6^2 A1/A2=(4*pi*4*6^2)/(4*pi*6^2)=4 A1/...
*March 2, 2011*

**Math**

Sum of angle in triangle=180° 180°=60°+60°+third angle 180°=120°+third angle third angle=180°-120°=60° Equilateral triangle has three angles equal 60° You triangle is equilateral triangle.
*March 2, 2011*

**math**

12d=60 Divide with 12 d=60/12=5
*March 2, 2011*

**math**

(1.9*104)*(8.4*105)= 1.09*1.04*10^2*8.4*1.05*10^2= 1.09*1.04*8.4*1.05*10^4= 17.42832*10^4= 1.742832*10*10^4= 1.742832*10^5
*March 2, 2011*

**Math Man I am lost**

In google type: calc101 When you see list of resultc click on: Calc101com Automatic Calculus,Linear Algebra and Polynomiasls When page be open clik option: derivatives When this page be open in rectacangle type: 1/sqrt[(2x^3)-9] and click options DO IT You will see solution ...
*March 2, 2011*

**Math**

Qadratic equation; y=ax^2+bx+c In your case: a=3 b=-1 c=-4 Discriminant: D=b^2-4ac D=(-1)^-4*3*(-4) D=1+48 D=49 When D>0 equation hawe two real solutions. x1=[-b-sqroot(b^2-4ac)]/2a x1=[-(-1)-sqroot(49)]/(2*3) x1=(1-7)/6 x1= -6/6 x1= -1 x2=[-b+sqroot(b^2-4ac)]/2a x2=[-(-1)+...
*March 2, 2011*

**math**

5/8=0.625 0.625*100%=62.5% 5/8=62.5% 5/8 is greater than 58%
*March 2, 2011*

**math**

x/2-4= -5 x/2= -5+4 x/2= -1 Multiply with 2 x= -2
*March 1, 2011*

**math**

L=Lenght W=With D=Diagonal P=Perimeter L=2W D=sqroot(L^2+W^2) D=sqroot[(2W)^2+W^2=5*sqroot(5) sqroot(4W^2+W^2)=5*sqroot(5) sqroot(5W^2)=5*sqroot(5) sqroot(5)*W=5*sqroot(5) Diwide booth sides with sqroot(5) W=5 W=5m L=2W L=10 L=10m P=2L+2W=2(L+W)=2*(5+10)=2*15=30 P=30m
*March 1, 2011*

**Math - Arithmetic**

an=a1+(n-1)*d In your case: a1=3 n=4 a4=18 a4=a1+(4-1)*d 18=3+3*d 18-3=3d 3d=15 Diwide booth sides with 3 d=5 an=a1+(n-1)*d a1=3+0*5=3 a2=3+5*1=3+5=8 a3=3+2*5=3+10=13 a4=3+3*5=3+15=18 Progresion: 3,8,13,15 In google type: arithmetic progression When you see list of results ...
*March 1, 2011*

**math**

54=m+9 54-9=m m=45
*February 28, 2011*

**Discrete Math **

In google type: Euclidean algorithm online When you see list of result click on: Euclid's Algorithm Calculator-Calculator Soup-Online Calculators When page be open type your numbers and click otion Calculate
*February 28, 2011*

**Math**

Slope=tan(alpha) Slope=(y1-y0)/(x1-xo) In google type: Linear equation You can find many sites about that.
*February 28, 2011*

**math**

2,9,16,23,30,37,44,51,58,65
*February 28, 2011*

**math**

315=3*3*5*7=9*5*7=63*5 315/5=63*5/5=63
*February 28, 2011*

**math**

315=3*3*5*7=9*5*7=63*5 5/315=5/(63*5)=1/63
*February 28, 2011*

**math-calc**

In google type: calc101 When you see list of resultc click on: Calc101com Automatic Calculus and Algebra Help When page be open clik option: derivatives When this page be open in rectacangle type: x/(x+1) and click options DO IT You will see solution step-by-step By the way on...
*February 27, 2011*

**Math**

In google type: calc101 When you see list of resultc click on: Calc101com Automatic Calculus and Algebra Help When page be open clik option: derivatives When this page be open in rectacangle type: (x^3+1)(3x^2-1) and click options DO IT You will see solution step-by-step By ...
*February 26, 2011*

**math**

Yes it is.
*February 26, 2011*

**math**

9(x-5)=4x-5 9x - 45 = 4x - 5 9x-4x= -5+45 5x=40 Divide with 5 x=8
*February 26, 2011*

**math**

In google type: calc101 When you see list of resultc click on: Calc101com Automatic Calculus and Algebra Help When page be opec clik option: derivatives When this page be open in rectacangle type: 12x/sin[x]+cos[x] and click options DO IT You will see solution step-by-step
*February 24, 2011*

**math**

4=2*2 4x8=2*2x8
*February 24, 2011*

**Math (Help This Will Be on My Test Tomorrow!)**

I make one mistake in typig. -2b= -1 Divide with -2 is mistake -2b= -10 Divide with -2 is correct
*February 24, 2011*

**Math (Help This Will Be on My Test Tomorrow!)**

You must write equation for any pair of points. y=ax^2+bx-4 x=0 y= -4 -4=a*0^2+b*0+c 0+0+c= -4 c= -4 x=1 y=0 0=a*1^2+b*1-4 a*1+b*1-4=0 a+b-4=0 a=4-b x=2 y=2 y=ax^2+bx-4 2=(4-b)*2^2+b*2-4 (4-b)*4+2b-4=2 16-4b+2b=2+4 -2b=6-16 -2b= -1 Divide with -2 b=5 a=4-b a=4-5 a= -1 So: a= -...
*February 24, 2011*

**3rd grade math hw help!**

1) 2/4,2/3,2/7,2/5 2/4 = 0.5 2/3 = 0.66666 2/7 = 0.28571 2/5 = 0.4 Order is: 2/7=0.28571 2/5=0.4 2/4=0-5 2/3=0.66666
*February 24, 2011*

**3rd grade math hw help!**

1) 2/4,2/3,2/7,2/5 2/4 = 0.5 2/3 = 0.66666 2/7 = 0.28571 2/5 = 0.4 2) 1/2,6/7,5/7,1/10 1/10=0.1 1/2=0.5 5/7=0.71429 6/7=0.85714 3) 1/2,6/7,1/12,2/3,11/12,1/6,1/3, 1/4, 4/5 1/12=0.08333 1/6=0.16666 1/4=0.25 1/3=0.33333 1/2=0.5 2/3=0.66666 4/5=0.8 6/7=0.85714 11/12=0.91666
*February 24, 2011*

**math**

-1-(-10)=-1+10=10-1=9 7 is less of -1-(-10)
*February 24, 2011*

**math**

-3/8= -0.375 That is greater than -1
*February 24, 2011*

**math**

-3+(-3)= -3-3= -6
*February 24, 2011*

**math**

(3x-5)(2x -8)= 2x*(3x-5)-8*(3x-5)= 6x^2-10x-24x+40= 6x^2-34x+40
*February 24, 2011*

**math**

Sorry mistake: (2x-3)*(2x+3)=2x*(2x-3)+3*(2x-3) =4x^2-6x+6x-9 =4x^2-9 B is correct answer
*February 24, 2011*

**math**

(2x-3)*(2x+3)=2x*(2x-3)+3*(2x-3) =4x^2-6x+6x+9 =4x^2+9
*February 24, 2011*

**math**

Final answer is: -3x^3+4x^2-8x+5
*February 24, 2011*

**math**

In google type: polynomials divided solver When you see list of results click on: calc101com/webMathematica/longdivide.jsp When page be open in rectacangle Divide type: 9x^4+0x^3+8x^2+17x-20 In rectacangle by type: -3x-4 Then click option DO IT You will see solution.
*February 24, 2011*

**math**

3/4=(3*5)/(4*5)=15/20 1/10=(1*2)/(10*2)=2/20 (3/4)+(1/10)=(15/20)+(2/20)=17/20= 0.85$
*February 23, 2011*

**math**

sqroot(40)=sqroot(4*10)=2*sqroot(10)
*February 23, 2011*

**math**

d=sqroot[(x2-x1)^2+(y2-y1)^2] Distance between points(7,3)(1,5) x1=7 x2=1 y1=3 y2=5 d=sqroot[(1-7)^2+(5-3)^2] d=sqroot[(-6)^2+2^2] d=sqroot(36+4) d=sqroot(40) Distance between points(8,2)(4,1) x1=8 x2=4 y1=2 y2=1 d=sqroot[(8-4)^2+(1-2)^2] d=sqroot[(4)^2+(-1)^2] d=sqroot(16+1) ...
*February 23, 2011*

**Math (Help This Will Be on My Test Tomorrow!)**

2x(-4x+200/3)=2x*(-4x)+2x*200/3 = -8x^2+400x/3
*February 23, 2011*

**math**

10^8=10*10*10*10*10*10*10*10=100 milions
*February 23, 2011*

**College Math ll**

area= length*width x^2+50x=l*x Divide with x (x^2/x)+50x/x=l*x/x x+50=l l=x+50
*February 23, 2011*

**Math**

420/(5/8)=(420/1)/(5/8)=(420*8)/(5*1) =3360/5=672
*February 23, 2011*

**math**

1+36/99=1+(9*4)/(9*11)=1+4/11
*February 23, 2011*

**math 117 for bobpursley**

sqroot(4)=2 5*sqroot(4)+10*sqroot(4)=5*2+10*2 =10+20=30
*February 23, 2011*

**math**

1.5=(3/y ) Multiply with y 1.5y=3 Divide with 1.5 y=3/1.5 y=2
*February 23, 2011*

**math**

In google type: functions graphs online When you see list of results click on: rechneronline.de/function-graphs/ When page be open in blue recatacangle type: -x Then click option Draw
*February 22, 2011*

**Math**

60%=60/100=(2*3*10)(2*5*10)=3/5 1-(3/5)=(5/5)-(3/5)=2/5 40%= 2/5 NOT completed
*February 22, 2011*

**math**

=distance betwen 2 points d=sqroot[(x2-x1)^2+(y2-y1)^2] In this case x1=0 y1=0 x2=1 y2=1 d=sqroot[(1-0)^2+(1-0)^2] d=sqroot(1^2+1^2) d=sqroot(1+1) d=sqroot(2) d=1.41421 cm
*February 22, 2011*

**Math**

In google type: Gaussian elimination online When you see list of results click on: karlscalculusorg/cgi-bin/linear.pl When page be open in rectacangle: How many equations? (2 to 7) type 3 and click Go then type your coefficients and click GO After each step click Go You will ...
*February 21, 2011*

**Math SOmeone please please help**

Go to : calc101 com Click option derivatives In rectacangle:Take the derivative of type: ((5+u^2)^5)((3-9u^2)^8) In rectacangle:with respect to: type u In rectacangle:and again with respect to type u Then click option: DO IT You will see solution step-by-step By the way on ...
*February 21, 2011*

**math**

V=([d^2*pi)/4] *L [(80^2*pi)/4]*45=[(d^2*pi)/4]*(45+80) Multipy both sides of this equation with(4/pi) (80^2)*45=d^2*(45+80) 6400*45=d^2*125 288000=d^2*125 Divide both sides with 125 288000/125=d^2 2304=d^2 d=sqroot(2304) d=48 cm
*February 21, 2011*

**math**

In google type: Pythagorean Theorem real situations When you see list of results click on some site.
*February 21, 2011*

**math**

1day=24h 1h=60min 1min=60sec 1hour=60*60=3600sec 1day=24h 1day=24*3600 1day=86400sec 1week=7days 1week=7*86400sec (7sec/1week)=7/(7*86400) (7sec/1week)=1/86400 D is correct answer
*February 21, 2011*

**math**

x-2y= -5 x= -5+2y 2x+y= -5 2*(-5+2y)+y= -5 -10+4y+y= -5 -10+5y= -5 5y= -5+10 5y= 5 Diwide both sides with 5 y=1 x= -5+2y x= -5+2*1 x= -5+2 x= -3 Solution: x= -3 y= 1 Checking of result: x-2y= -5 -3-2*1= -5 -3-2= -5 -5= -5 OR 2x+y= -5 2*(-3)+1= -5 -6+1= -5 -5= -5
*February 20, 2011*

**math please help**

3-8x=141 -8x=141-3 -8x=138 Divide both sides with -8 x=138/(-8) x= -17.25
*February 20, 2011*

**GED MATH**

In: rechneronline.de/function-graphs if you wat to see zoom of graph in Display properties set: Range x-axis from -1.5 to 1.5 Range y-axis from -4 to 1
*February 18, 2011*

**GED MATH**

If you wat to see graph of your function in google type: function graphs online When you see list of results click on: rechneronline.de/function-graphs When page be open in blue rectacangle type: 4x^2+2x-3 Then click option Draw You will see graph of your function Then in ...
*February 18, 2011*

**math**

y=4x-5 x=3 y=4*3-5=12-5=7 x=5 y=4*5-5=20-5=15 x=7 y=4*7-5=28-5=23 Input values 3,5,7 Output values 7,15,23
*February 18, 2011*

**8th grade math **

2x-2= -18 2x= -18+2= -16 Divide with 2 x=-8 -7x+7y=7 -7*(-8)+7y=7 56+7y=7 7y=7-56 7y= -49 Divide with 7 y= -7 One solution x= -8 y= -7
*February 17, 2011*

**math**

d=distance betwen 2 points d=sqroot[(x2-x1)^2+(y2-y1)^2] In this case x1=0 y1=0 x2=1 y2=1 d=sqroot[(1-0)^2+(1-0)^2] d=sqroot(1^2+1^2) d=sqroot(1+1) d=sqroot(2) d=1.41421 cm In google type:distance formula and you will find more sites about that
*February 17, 2011*

**math**

In google type: angle of depression angle of elevation You will find many sites about that. Sometime find informations about your homeworks on Internet.
*February 17, 2011*

**math**

1g=1000mg 0.925*1000=925 mg/l 1l=1000ml 100ml=1000/100=0.1l 0.1*925=92.5 0.925g/l=92.5mg/100ml
*February 17, 2011*

**math**

x^2=3x-6 x^2-3x+6=0 In quadratic equation y=ax^2+bx+c discriminate is D=b^2-4ac In your case a=1 b= -3 c=6 D=b^2-4ac=(-3)^2-4*1*6=9-24= -15 When discriminante is negative quadratic have two imaginare solutions. If you want to know that solutions in google type: quadratic ...
*February 17, 2011*

**math**

You must find where is : -0.8t^2-10t+330=0
*February 17, 2011*

**math**

You must find where is : -0.8t^2-10t+330= In google type: "quadratic equation online" When you see list of results click on: webgraphingcom/quadraticequation_quadraticformula.jsp When page be open in rectacangle type: -0.8t^2-10t+330=0 and click option solve it. ...
*February 17, 2011*

**math**

4x-6y=30 3x-5y=24 (4x-6y=30) Multiply with 3 12x-18y=90 (3x-5y=24) Multiply with 4 12x-20y=96 Now you have System: 12x-18y=90 12x-20y=96 Subtracting 12x-18y=90 from 12x-20y=96 gives: 12x-12x-18y-(-20y)=90-96 0-18y+20y= -6 2y= -6 Divide with 2 y= -3 4x-6y=30 4x-6*(-3)=30 4x+18=...
*February 16, 2011*

**math**

If you wat to see graph of your function in google type: "function graphs online" When you see list of results click on: rechneronline.de/function-graphs When page be open in blue rectacangle type: x^3-1.5x^2 Then click option Draw You will see graph of your function
*February 16, 2011*

**math**

Local minimum or maximum is points where first derivation=0 Derivation of x^3-(3/2)x^2 is 3x^2-(3/2)*2x=3x^2-3x =3*(x^2-x) =3*x*(x-1) Zeros of this expresion is x=0 and x=1 Second derivate of this x^3-(3/2)x^2 is 6x-3 Function have local minimum where is second derivation is ...
*February 16, 2011*

**math**

You also can in google type: derivatives online When you see listo of results click on: numberempirecom/derivatives.php and solvemymathcom/online_math_calculator/calculus/derivative_calculator/index.php On this sites you will see your derivation in two different simplify forms
*February 16, 2011*

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