Friday

January 20, 2017
Number of results: 19,582

**calculus help me plz too hard show step**

charge Q coulombs at time t seconds is given by the differential equation RdQ/dt+Q/C=0, where c is the capacitance in farafd and R the resistance in ohms.solve the equation for Q given that Q=Qo where t=0 plz show step plz plz plz

*December 27, 2016 by ...*

**Calculus i need help plz plz**

Integrate:Sinxcosx/a^2cos^2(x)+b^2sin^2(x))dx??? plz i need the full working too hard for me

*October 21, 2015 by Collins*

**Calculus i need help plz plz**

If y=ws^3/d^4 find the % increase in 'y' when 'w' increases by 2% and 's' decreases by 3% and 'd' increasee by 1%...... There a little error in the first question i post here it is plz i need the working and explanation

*October 18, 2015 by Collins*

**calculus too hard**

the velocity of a chemical reaction is given by dx/dx=k(a-x) where x is the amount transfered in time t,k is a constant and a is the condition at time t=0 when c=0 solve the equation and determine x in terms of t? Plz show work plz plz

*December 26, 2016 by ...*

**LIVING ENVIRONMENT**

the ability to grow in size is a characteristic of living organism .Although an icicle may grow in size over time,it is considered nonliving because there is 1)an incerase in matter ,but no increase in the number of icicle. 2)an interaction between the icicle and the ...

*February 12, 2013 by tania sharmin*

**calculus plz help me**

integrate:dx/((x-1)sqrt(x^2-2) plz show solution i plead

*May 5, 2016 by samuel*

**maths calculus need help plz**

solve d^2y/dx^2+y=tanx show working plz i don't no it at all

*September 20, 2016 by dams*

**math**

identify the value of x that makes each pair of the ratios equivalent x:4 and 45:20 A.8 B.9 C.10 plz plz plz plz help me!!!!!!!! PLZ!!!!!

*November 2, 2015 by pankakes*

**calculus help me plz**

integrate:dx/((x-1)sqrt(x^2-2) a tutor here direct me to a page but i do not know how to use it i tried but it did not show me any step...i need help plz

*May 5, 2016 by samuel!!!!*

**Calculus help plz**

Evaluate in (cuberootof(x+1)/(x-1)).1/(x+1)dx help plz

*January 2, 2016 by Collins*

**I NEED HELP!!:(!!!! HELP ME PLZ!!**

I GOT A FEW QUESTIONS SO what is a cell part that has the funcion of a gel-like material inside cells... and what releases energy into the cell.?? plz plz plz plz HELP!!!

*October 20, 2009 by i really need help!!*

**math plz plz plz plz help plz .....thank you**

mark bought a notebook for $1.45 and some pencils that cost $0.42 each if the total cost was 6.91,how many pencils did he buy A.12 B.13 C.14 D.15 is 14 the answer plz help thank you

*November 23, 2015 by random rainbow*

**Calculus also need help plz plz plz**

If z=1/(x^2+y^2-1) is x(dz/dx)+y(dz/dy)=-2z(1+z) or -z^2(1+z) note:dz/dx=partial derivative of x and dz/dy=partial derivative of y??

*October 17, 2015 by Collins*

**calculus plz help me**

Show that the numerical value of the radius of curvature at the point (x1, y1) on the parabola y^2=4ax is [2(a+x1)^3/2)]/a^1/2. If c is the centre of the curvature at the origin O and S is the point (a, 0), show that OC=2(OS) plz show me working plz

*September 16, 2016 by marvin*

**social studies? i think idk**

what new ideas came from the automobile? plz help plz plz plz ASAP

*December 5, 2015 by Geena*

**Math ....urgent help**

i just don't get this elimination method ..... plz help me plz.....teach me how to keep the x and y in a parallel line. and which number to multiply.....plz help -5x-4y=-11 10x=-6-y help me plz......

*January 7, 2009 by vero*

**SS plz help me plzzzzzzz**

What are the two major forces that reshape earth? Describe how itworks. plz plz plz help me there are no answer choices hope u can still help

*November 18, 2015 by #AriannaGirl :)*

**Calculus help plz i do not no it at all**

Integrate: xrootof(2+3.fourth rootof(x^3)/x^6.root(x) plz help i do not no it at all show working!!

*January 4, 2016 by Collins*

**SS PLZ HELP ME ASAP**

What are the two major forces that shape and reshape earth? Describe how each one works. plz plz plz help me there are no answer choices hope u can still help

*November 18, 2015 by #AriannaGirl :)*

**calculus-help me sir~steve**

show that 2f''(t)-f'(t)-f(t)=sin(t)-cos(t) where f(0)=f'(0) has the solution (-2/5)e^(-t/2)-(1/5)sin(t)+(2/5)cos(t) using laplace tranformation plz plz plz show step by step

*May 26, 2016 by dam*

**biology**

a boy inherits genes for tallness,but his growth is limited as a result of poor nitrition. this is an example of 1)an inherited disorder. 2)environmental influence on gene expression . 3)expression of a hidden trait 4)a characterstic controlled by more than one pair of genes. ...

*February 8, 2013 by tania sharmin*

**Calculus 12**

Simple query. plz tell me in brief. How will u slove this -3 log 3 + log 2 + 2 log 4 Plz explain

*January 21, 2012 by Akash*

**plz plz help me belive me have tried**

cosx+cosy=a and sinx+siny=b show that sin2x+sin2y=2ab(1-(2/(a^2+b^2)) plz plz show step

*November 2, 2016 by maths*

**Calculus.......plz help! =)**

Use any calculus method to determine extrema, intervals where the function is increasing or decreasing, asymptotes, and points of inflection for y = -x(x+1)^3

*October 20, 2012 by Amy*

**Calculus plz help integral**

Find the integral of §x^1/2.e^xdx at upper limit of 1/2 and lower limit of zero..show work plz

*October 26, 2015 by Collins*

**Geometry i need help urgently plz plz plz**

The lenght of a line segement is of 10units and the co-ordinate of one end point are (2,-3) if the abscissa of the other end is 10 find the ordinate of the other end?? Working plz plz

*October 18, 2015 by Collins*

**need help calculus plz plz-sir steve**

if y=3e^(2x)cos(2x-3) verify that d^2y/dx^2-4dy/dx+8y=0 plz help me i tried all i could but it become too complicated for me here set u=3e^(2x) v=cos(2x-3) du/dx=6e^(2x) i used chain rule dv/dx=-2sin(2x-3) dy/dx=-3e^(2x)sin(2x-3)+cos(2x-3)6e^(2x) d^2y/dx^2 now i did lndy/dx=-...

*November 13, 2016 by practising and need help*

**math**

the volume of a rectangular solid is given by expressions given below.in each case find the dimentions of the solid. a)15x^2-51x+18. b)x^3+13x^2+32x+20. c)x^2-5x/2-3/2. d)x^4+x^3-x-1 plz everyone help me out.till 2 o'clock...plz plz plz

*May 30, 2012 by parul*

**math**

the volume of a rectangular solid is given by expressions given below.in each case find the dimentions of the solid. a)15x^2-51x+18. b)x^3+13x^2+32x+20. c)x^2-5x/2-3/2. d)x^4+x^3-x-1 plz everyone help me out.till 2 o'clock...plz plz plz

*May 30, 2012 by PLZ HELP ME NOW...*

**maths plz**

∫√(x²+1)/(x+1)dx plz show step i know it messy plz i really need it

*October 6, 2016 by Anonymous*

**pscychology**

Could someone pretty plz plz plz help me...What are the 2 biggest parts of the human brain??

*March 11, 2009 by Logan:)*

**SCIENCE!!--ANONYMOUS PLEASE ANSWER MY QUESTION!**

plz answer the question we were talking about plz plz. Go back to the problem. I got 184 but the worksheet answer says 136 which is correct?? plz help!! thx

*September 13, 2010 by Happy Face*

**Maths plz help**

X^x+y^y=31 x+y=5 plz help i was told to use newton litrate method plz help

*December 18, 2015 by Collins*

**social studies idk**

how did the automobile negatively impact society???!!!?!?! PLZ help me I have been on it since morning plz pretty plz cherry on top help me

*December 4, 2015 by suzzie*

**physics!! plz answer me!**

A 0.15 kg baseball moving at +26 m/s is slowed to a stop by a catcher who exerts a constant force of -390 N. How long does it take this force to stop the ball? How far does the ball travel before stopping? plz plz plz help!!

*December 10, 2007 by julia*

**maths**

plz i cerious need help i posted dis qustion bt due 2 my wrong typing it was nt anser plz here it is:x^4+3x-2/(x^2+1)=Ax+B/(x^2+1)+Cx+D/(x^2+1)^2+(Ex+F)/(x^2+1)^3+G/(x-4)+(Hx+1)/(x-4)^2.find ABCDEFGH? plz it a partial fraction thank yo u and Godbless u

*July 29, 2015 by anthony*

**chem**

stilll didn't get it .. .. can u plz explain in detail ... how did u get the answer.. plz plz plz plz plzp l zp thnks Bond enthalpy is the energy required to break a mole of a certain type of bond. O=O = 495 kj/mol S-F = 327 kj/mol S=O = 523 kj/mol Use average bond enthalpies ...

*November 12, 2008 by DR BOOBB Plz HELP*

**Calculus help plz**

Integrate:(K+1/k^2+4k+8)dx

*January 5, 2016 by Collins*

**maths**

sir steve plz am a little confuse (x-y)³=A(x+y) prove that (2x+y)dy/dx=x+2y if y is a function of x and x=e^t/(e^t+1) show that dy/dt=x(1-x)dy/dx plz explain to me very well sir damon answered that but i still dont get it If u want me to show my work i will do it sir plz plz ...

*November 12, 2016 by practising and need help*

**calculus...plz ans urgent**

Find the dimensions of the right circular cylinder of greatest volume which can be inscribe in a right circular cone with radius of 5 inches and a hieght of 12 inches(hint:use similar triangle property).also draw a label diagram....plz answer its too urgent

*November 7, 2010 by daan*

**calculus**

plz help me with this,when f(x)=1/(x^2+2), find lim[f(x)-f(a)]/x-a x ---->a

*February 8, 2012 by Bash*

**Calculus Plz Help**

If f(x)=x^4, compute f(-2) and f'(-2) f(-2)=___ <--- ?

*January 31, 2016 by Dominick*

**calculus**

if y is a function of x and x=e^t/(e^t+1) show that dy/dt=x(1-x)dy/dx help me plz

*November 11, 2016 by fui*

**Ms.Sue (ONLY)**

can you plz help me in science? PLZ HELP ME! YOU HELP ALL THE TIME! *begs* plz help! i am my knees!!!!! (really i am!) its called "science 8th grade"

*March 7, 2012 by sammie doodles :-)*

**grade 10 history**

I have a SUPER HUGE project due called National History day and need lots of help with it, plz plz plz help!!!!!

*January 20, 2013 by Macy*

**Plz,plz help!**

Can you help me write: real-world scenario in which you would write an inequality rather than an equation? Plz, I really need help! :D

*January 21, 2014 by Princess Anna*

**maths sir steve plz reiny plz sir damon plz help**

express 1.1 in surd form pllllllz step

*November 12, 2016 by Anonymous*

**math plz help ;-;**

What is the y-coordinate of the y-intercept of the linear equation 2x - 3y = 12? Plz help I don't understand how to do this can you show me step by step plz, sorry ;-;

*May 31, 2016 by leo*

**maths sir steve plz reiny plz sir damon plz help**

express 1.1 in surd form pllllllz

*November 12, 2016 by Anonymous*

**Calculus**

Let f(x)=x^2-8x+16 and g(x) x^2-16. For what values of x is f(x)/g(x) increasing? Explain plz~

*February 28, 2012 by Jake*

**Calculus...plz help!!**

find dy/dx of xsiny-ycosx=1

*October 7, 2012 by Liz*

**Calculus need help**

Dy/dx=x+x^3/y plz show your work

*January 1, 2016 by Collins*

**Reposting calculus help plz**

Dy/dx=(X+x^3)/y help show working

*January 1, 2016 by Collins*

**Another Calculus help plz**

Show that if y=tanx/2 dy/dx=1/sinx

*January 4, 2016 by Collins*

**Calculus help!!!**

X^2y+sinxy=e^xy i need solution plz

*January 12, 2016 by Daniel*

**calculus help**

integrate:dx/(3x^3-5)^3 help plz show step

*May 6, 2016 by samuel*

**calculus help me**

help find dy/dx if y=cot(x+y) working plz

*September 28, 2016 by remirez*

**calculus**

solve for dy/dx=(x^2+y^2)/xy by substitution. Plz help step

*December 28, 2016 by ...*

**calculus**

(2y-1)dy/dx=(3x^2+1) given that x=1 when y=2 plz show step thanks

*January 1, 2017 by ...*

**calculus**

integrate ((x^3/6)+(1/(2x)))*squareroot of 1+(x^4/4)+(1/4x^2)-1/2..plz help me...tnx in advance!

*May 7, 2007 by Maria-PLZ HELP*

**calculus**

derivative of (3x+2)^6- 8(7x^2+9)^4 all cube rooted! plz help!

*March 3, 2013 by Anonymous*

**Calculus-PLZ HELP! =)**

does the sum 3/(2^(n)-1) converge or diverge? n=1--->infinity

*March 26, 2013 by Sara*

**Another Calculus help plz**

Integrate:( dx/root(x^2-4x)^3 help me show it solution

*January 5, 2016 by Collins*

**Calculus**

can someone please prove the difference rule to me? d/dx[f(x)-g(x)]=d/dx f(x)- d/dx g(x) plz help

*February 4, 2007 by Laura*

**calculus help**

integrate:dx/(3x^3-5)^3 i don,t know how to use wolframalpha plz show me step....

*May 7, 2016 by philip*

**calculus-integration**

integrate -2/xln^4(x)...plz help me..give me an idea on how to start..plz The derivative of the ln(x) function is 1/x and this is multiplying the ln^4(x). You can thus write the integral as: -2 * 1/5 ln^5(x) + constant. is that the answer? wut about the x infront of ln^(x)......

*May 7, 2007 by Maria*

**math**

A water balloon is shot into the air so that its height h, in metres, after t seconds is h = —4.9t^2 + 27t + 2.4 a)How high is the balloon after 1 s? b)For how long is the balloon more than 30 m high? c)What is the maximum height reached by the balloon? d)When will the ...

*January 23, 2009 by gagan*

**Calculus - HELP plz!**

Find all of the first partial derivatives of f(x,y,z)=arctan y/xz

*June 2, 2013 by Sara*

**Calculus-HELP PLZ !!!!**

Find the complete general solution to the second order DE: 4y'' - 9y = 0

*July 18, 2013 by Elyse*

**Calculus-HELP PLZ !!!!**

Find the complete general solution to the 2nd ODE: 9y'' + 9y' - 4y = 0

*July 22, 2013 by Elyse*

**Calculus help plz**

Using the first rule of derivative find 8(x-y)12?? And how can i solve these y^x+x^y=17,x+y=5

*October 24, 2015 by Franklin:*

**calculus too hard help**

if y=x^x^x^x... dy/dx=? plz show working thanks got no ideal at all

*May 2, 2016 by sam*

**calculus-help.. .Me**

if y=e^(-kt)[Acosh(qt)+Bsinh(qt)] where A,B,q and k are constant show that d^2y/dt^2+2kdy/dt+(k^2-q^2)y=0 step plz thanks

*May 24, 2016 by samuel*

**calculus**

plz help show me steps solution evaluate the integral §dx/[(x+1)root(1-x^2)]

*September 26, 2016 by dam*

**math**

You want to cover a trapezoidal box with paper. You have a sheet of paper that is 1m by 500cm. What is the size box that can be made with minimal wastage? plz plz plz help me with this.. i don't understand how to do this

*May 15, 2016 by Emily*

**Physics plz**

Do any teacher here have an email plz becouse I want to send some pictures for question ,,, physics plz or how can I attach picture here ????

*June 12, 2013 by Maryam*

**Function plz help!!!**

If a function u(x,y)=arctan(y/x) deduce the laplace equation of the function. plz show working i don't no where to start from...plz thanks

*December 12, 2015 by Collins*

**calculus**

finding limit using epsilon and delta of lim x->2 x^3-3x+7=9..plz anyone solve it for me....

*April 23, 2011 by Yashna Islam*

**Calculus-PLZ HELP STEVE!**

Find the inverse Laplace transform of the following function: F(s)=(9+s)/(4-s^2)

*July 28, 2013 by Elyse*

**Calculus help plz**

Integrate:cosmxcosnx.dx if m=n i can not solve it i have tried my best but to no avail

*January 4, 2016 by Collins*

**calculus help**

y=cosxcosy-sinxsiny/sinxcosy+cosxsiny find dy/dx plz show me working

*September 30, 2016 by philip*

**calculus PLZ HELP!!**

find the equation for the line tangent to the curve at the given point. (x^2)(y^2)-2xy+x=1 at (2, 1/2)

*October 7, 2012 by Liz*

**CALCULUS-plz help!**

For the curve r = 2 sin 3(theta): Find the arc length of one petal

*April 16, 2013 by Sara*

**CALCULUS-plz help!**

For the curve r = 2 sin 3(theta): Find the arc length of one petal

*April 16, 2013 by Sara*

**Calculus**

Integrate sqrt(x^2 + x) dx I have completed the squares and got x^2-x = (x+1/2)^2 -1/4 Now i don't know how to proceed, plz help me!

*October 5, 2014 by Jamie*

**calculus sir damon help me or steve**

integrate dx/root(coshx-1) plz show step

*May 10, 2016 by dam*

**calculus need help**

If 3ay^2=x(x-a)^2 with a>0, prove that the radius of curvature at the point (3a, 2a) is 50a/3. Help with working plz

*September 16, 2016 by marvin*

**calculus**

Find the domain of the vector-valued function. r(t) = sin ti + 4 costj + tk plz help me working

*November 23, 2016 by ....*

**Calculus: Implicit Derivatives**

Compute d/dx[f(g(x))] -where f(x)=x^4-x^2 -and g(x)=x^2-7 (Note: I tried 5 times but I still got this wrong. Plz help)

*March 7, 2016 by Dominick*

**calculus help**

integrate cos^10xdx.. .plz show working i really wanna learn these thanks anyway

*April 17, 2016 by newton*

**maths sir-reiny help calculus**

solve the differential equation (x^2-xy+y^2)dy-xydx=0 plz show me working

*October 1, 2016 by samuel*

**Chemistry chlorine plz help**

A metal x forms two different chloride.if 12.g of chloride A and 16.3g of chloride B contain 7.1g and 10.7g of chlorine respectively,show that the figure agree with the laws of multiple proportions.write there formulea plz i need the work....no hint plz

*January 12, 2016 by Daniel*

**maths-calculus help me**

differentiate Arccosh(x^2+1)*dy/dx if y=arcsinh(coth(x^2) plz showfull work i plead my brain is fried

*June 5, 2016 by am in trouble*

**calculus need help**

solve d^2y/dx^2+y=tanx plz help me aldo i was given a link to read on but i cant even acess it just help

*September 20, 2016 by dams*

**calculus-add**

(2y-1)dy/dx=(3x^2+1) given that x=1 when y=2 plz show step thanks 2) (a)find the general solution of the equation (x-2)dy/dx+3y(x-1)/(x+1)=1 b)given the boundary condition y=5 when x=-1,find the particular solution of the condition given in (a) a little help would do thanks i ...

*January 1, 2017 by ...*

**bio check plz plz plz**

in human (2n=46) mitosis result 2 cell with 23 chromoses and meosis result in (n=23) 4 cell with 46 chromoses... is this statment true ? please help me ....

*November 28, 2011 by hiba*

**calculus (steps and explanation plz)**

Find a curve y=f(x) with the following properties (i) y"=6x and (ii) its graph passes through the point (1,1) and has a horizontal tangent there.

*April 15, 2015 by Linda*

**SCIENCE HELP PLZ HELP PLZ**

Which is one advantage of sexual reproduction? A. More offspring are produced ** B. More offspring survive to maturity C. The offspring have more genetic Variation D. The offspring and the parents are identical. PLZ HELP ME IS IT A?

*January 25, 2016 by GoldenSparkleGirl*

**Urgent Chem help plz**

is answer +103 KJ.. plz chk Plz explain in detail.... i tried to search on internet but i am confused with co-efficents.. how to set up the equaiton .. plz help me ??? Bond enthalpy is the energy required to break a mole of a certain type of bond. O=O = 495 kj/mol S-F = 327 kj...

*November 12, 2008 by Sarah*

**social plz...................help me plz.........**

Name the 6 seas of the " Fertile Crescent" / Middle East?

*September 16, 2008 by Kaity*