Saturday
February 6, 2016

Posts by collins

Total # Posts: 181

Confused bat!!! English
Thanks so much ms sue and sir reed
January 18, 2016

Confused bat!!! English
My english teacher told me that there is a difference between NO and IDON'T NO he said that we should exaplain with refrences am confuse but they are the same
January 18, 2016

Help!!! Maths number base
If 321 base 4 is divided by 23 base 4 and leaves a remainder 'R' what is the value of 'R' ?
January 15, 2016

mechanics
please help solve these questions (1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of the earth (r>Re...
January 9, 2016

mechanics
please help solve these questions (1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of the earth (r>Re...
January 9, 2016

mechanics
please help solve these questions (1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of the earth (r>Re...
January 8, 2016

physics
(1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of the earth (r>Re), where Re is the radius of the ...
January 8, 2016

physics
(2). Determine the velocity which a body released at a distance r from the center of the earth when it strikes the earth surface.
January 8, 2016

Word problem
Sorry it 3900 not 390lb
January 6, 2016

Word problem
earth and cement block filling a box weighs 390mlb.the block weigh 2.4times as much as water and earth weighs 1.5times as much as water.water filling the box weighs 2000lb.find the weigh of the cement block.bl? plz help help help!!!! Show work
January 6, 2016

Minimum and maximum value
Let f(x) be a decreasing the function defined for x>or=0 and f(2a^2+a+1)<or= f(3a^2-4a+1) then find the minimum and maximum value of a plz help help help!!!show ur work
January 6, 2016

Trigonomentery Maths to difficult help me
Given that cosZ=L where z is an acute angle.find and expression of (cotz-cosecz)/(secz+tanz)? plz help help help!!!! Show work
January 6, 2016

Gratitude for my helper
Sir steve mrs reiny sir bobpursely sir damon ms sue..... Thank you very much you guyz have really help me alot today my result came out and i score 98 out of 100 in my maths exams aldo i am still shaking in my english but with the help of ms sue i always read english question ...
January 6, 2016

Chemistry:normal notation plz help
Using the normal notation of quantum number find the element which has the following value of quantum number n=3 l=2 m=2 s=+1/2 (a):potassuim (b):nitrogen (c):sodium (d):scandium
January 6, 2016

Word problem help plz
How many pound of cream containing 12% butterfat must be added to 1800lb.of milk containing 2% butterfat to obtain milk having 3% butterfat? Plz help me
January 5, 2016

Another Calculus help plz
Integrate:( dx/root(x^2-4x)^3 help me show it solution
January 5, 2016

Calculus help plz
Integrate:(K+1/k^2+4k+8)dx
January 5, 2016

Log maths help me plz
Logb(base a)=3/2 log d(base c)=5/7 and a-c=9 then b-d=? Plz help me
January 5, 2016

Equation help plz
If x and y satisfy the equation (x+5)^2+(y-12)^2=14 then find the minimum value (x^2+y^2) plz help show working
January 5, 2016

Trigonomentry help plz thanks
find the number of root the equation given below in interval (-pi.pi) (cosx)^7+(sinx)^4=1
January 4, 2016

Bionomial expansion help agn #thanks
find the third term of the binomial expansion (root(x)+1/root(y)^6 plz help i do not no it at all show working!!
January 4, 2016

Calculus help plz i do not no it at all
Yes thats what i mean sir
January 4, 2016

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

Word problem help plz
Aldo d beat me but anything i guess inverted means inverse such that let father=f and son=s let the age of father be=10f+s inverted age now will be=10s+f 99-(10f+s)=age of son inverted age now will be=90-10s)+(9-s)...because there sre still d same i jus do dat to help we my ...
January 4, 2016

Word problem help plz
Aldo ur english beat me but anything i guess inverted means inverse such that let father=f and son=s let the age of father be=10f+s inverted age now will be=10s+f 99-(10f+s)=age of son inverted age now will be=90-10s)+(9-s)...because there sre still d same i jus do dat to help...
January 4, 2016

Word problem help plz
The sum of the age of father and son is 99.if the age of the son is added to the inverted age of the father,the sum is 72.if the inverted age of the son is subtracted from the age of the father.the difference is 28...what are there age? plz help i do not no it at all show ...
January 4, 2016

Another Calculus help plz
Show that if y=tanx/2 dy/dx=1/sinx
January 4, 2016

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

Calculus pz help urgently
Integrate:sinxcos(x-1/4.pi)dx
January 3, 2016

Calculus help plz
Evaluate in (cuberootof(x+1)/(x-1)).1/(x+1)dx help plz
January 2, 2016

Maths sum of digit help!!!
What is the sum of the digit in 4444^4444
January 2, 2016

Maths help equation
Evaluate x in 1/x<x
January 2, 2016

mechanics
please help solve these questions (1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of the earth (r>Re...
January 1, 2016

Reposting calculus help plz
Dy/dx=(X+x^3)/y help show working
January 1, 2016

Calculus need help
Yes sir...sorry for the typo
January 1, 2016

Calculus need help
Dy/dx=x+x^3/y plz show your work
January 1, 2016

Maths/physics need help agn
A hand bag containing some loads weighing 162n is carried by two student, each holding the handle of the bag next to him..if each handle is pulled 60degree to the vertical find the force of each student? Help plz
January 1, 2016

Maths/physics
A catapult used to hold a stone of mass 500g is extended by 20cm with applied force .f if the stone leaves with a velocity of 40m/s,what is the value of f? Help plz
January 1, 2016

Maths need help trigonomentery
Two circular flower beds have a combined area of (29¥)/2m^2. The sum of the circumferences of the flower beds is 10¥m. Determine the radius of each bed........ Happy new year to all mrs sue steve,reiny,damon...and to all my jishka helper i need help plz i need it ...
December 31, 2015

Calculus i need help
(Cosx)^y=x^siny find dy/dx at point pi/(4,0)
December 20, 2015

Maths tangent help me damon or steve help
The line y=3x+k is a tagent to curve x^2+xy+16=0 find the possible value of k? plz help me i don't no it
December 20, 2015

Trigonomentry plz help
tanA=ntanB sinA=msinB find cos^2A in terms of 'm' and 'n' plz help
December 19, 2015

Maths trigonomentry
3cosx+4sinx=5 what is x is too difficulat form me to solve? Shw working please
December 18, 2015

Thanks so much damon!
God bless your damon and may your knowledge be increased in jesus name
December 18, 2015

Maths deduce!damon or steve plz help any one
Sir am too confuse at what am doing do u have any ideal at all that might help?
December 18, 2015

Maths deduce!damon or steve plz help any one
From (p-q)^2+(q-r)^2+(r-p)^2>(pq+qr+rp) hence deduce that for any number p,q,r,(p+q+r)>3(pq+qr+rp)
December 18, 2015

Sir damon i think u maid a typo!
If 64-16m=144 -16m=80 m=-5? Can it be negative
December 18, 2015

Maths plz help!
Yes the root
December 18, 2015

Maths plz help!
4x^2+8x-m=0,differs by 3 find the value of the constant m plz help me??
December 18, 2015

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

Chemistry help
The earth moves round the sun in one year.the average earth-sun distance is 1.5*10^11m given that the mass of the earth is 5.98*10^24kg (a):the angular momentum of the earth??? (b):kinetic energy of the earth motion?? (c):kinetic energu of the earth motion half way along it ...
December 18, 2015

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

AP Physics
A fire engine must lift 30 kg of water a vertical distance of 20 m each second. What is the amount of power needed for the water pump for this fire hose? Is the answer 5880W? If yes, why so?
December 4, 2015

Maths:simultaneous equation
Plz help me solve for x and y x^3+y^3=1 x^4+y^4=1 help???
November 30, 2015

Parametric derivatie help plz
Find the eqation of the line tangent to the parametric curve define by x=cos2t and y=sin3t and t=pi/12 plz i don't no where to start from show working
October 28, 2015

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

Calculus help
Solve using implicit derivative cuberoot(x)+cuberoot(xy)=4y^2
October 26, 2015

Simultaneous equation i nee help find x,y
X^-y=158 y^2-x=108 find x and y?? Show work
October 22, 2015

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

Trigonometery help plz
Show that cos^2(theta)+tan(theta)cosec(theta)=cos??? Show work
October 21, 2015

Calculus...need help
Prove that the integral 1/root(ax^2+bx+c)dx=1/root(a)|n(2ax+b+2root(a(ax^2+bx+c)]+k....please i don,t no it
October 20, 2015

Steve look i have corrrected it help plz it urgent anyone plz
Last year kemi who happens to be my sister was 2wice as old as my lovely brillant primary school friend femi,last three years when i was two less than femi age now.the sum of kemi age next 9years and femi age now and my age three year will be equal to 60....what is our present...
October 19, 2015

Algebra word problem.....so difficult
Last three year kemi who happens to be my sister was 2wice as old as my lovely brillant primary school friend femi,last three years when i was two less than femi age now.the sum of kemi age in the next 9years and femi age noe and my age in the next three year will be equal to ...
October 19, 2015

Proving trigonometery
Show that Sin(A/2)=root(1/2(1-cosA)??
October 19, 2015

Area of a triangle plz help
|BM|,|CN| are altitude of a triangle ABC if AB=3.5 AC=3.2 BN=2.1 calculate the area of the triangle and hence find |CN|.......show working plz i don't no it
October 19, 2015

Geometry i need hlp 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

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

Algebra help plz
If € , ß are the roots of the equation 2x^2 + 4x - 3 = 0 and €^2 , ß^2 are the roots of the equation x^2 + px + q = 0, find the value of p.
October 18, 2015

math
Tan45.5=63.0/L L=63.0/tan45:5=??
October 17, 2015

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

Calculus badly need help so difficult
If y=ws^3/d^4 find the percent increase in y when w increase by 2% s decrease by 3% and s decrease by 1% plz show the full solution the question is byond my power
October 17, 2015

Hey reiny how am i going to go with these
Integrate x^xdx it is to difficult if wolfram can help any link or something
October 16, 2015

Algebra 2
Confusing but screw down a little steve have already given a hint to that question
October 16, 2015

Algebra!!huh?
Huh?? Two unknown in one equation ?? I belive you want to find y in relation to x 3x+2y=5-y 2y+y=5-3x 3y=5-3x y=5-3x/3
October 15, 2015

Integral so difficult i need help
Integrate x^xdx?? help so the solution it to difficult for me
October 15, 2015

Maths:distance covered urgently need help
A car travelling at 60km/hr started a journey travelling in an oppsite direction to his destination.After travelling for 35min the driver realised his mistake he then turn the car back around and started travelling in the correct direction.how far away is he from his starting ...
October 15, 2015

Algebra hw, coordinates!! help!!
A(1,4)=A(1,-4) B(3,-2)=b(3.2) D(4,2)=D(4,-2) jus inverse the sign daz all
October 15, 2015

maths
I just decide to help you complete it i belive you needed help
October 15, 2015

maths
X+y=9 10x+y-45=10y+x x+y=9.......(1) 10x-x+y-10y=45 9x-9y=45 9(x-y)=45 x-y=45 ----- x+y=9 x-y=5 2x=14 x=7 your turn finish it 7+y=9 y=9-7 y=2 the number is 72
October 15, 2015

maths
X+y=9 10x+y-45=10y+x solve it an algebra now
October 15, 2015

Maths
Correct good
October 15, 2015

MATHS
Let the lenght of the diagonal be x sin60=3/x
October 15, 2015

Area of a triangle
In Triangle ABC b=6cm c=8cm and angle A=60 find the area of a triangle.let AD be the bisector of A where D lies on BC and AD=K show that AD=24root3/7
October 15, 2015

MATHS
W+6tw=11-w w+6tw+w=11 w(1+6t+1)=11 w(2+6t)=11 w=11/(2+6t) ----------------- r=9-7jk+4jt^2 r-9=4jt^2-7jk r-9=j(4t^2-7k) j=r-9/(4t^2-7k).......
October 15, 2015

Math!typo
Typo i think x and y are both eliminated to variable to find substitution or not no variable can be found
October 14, 2015

Algebra
H=300t-5t^2=4500 60t-t^2-900=0 -t^2+60t-900=0 multiply by negative sign t^2-60t+900=0 (t^2-30t)-(30t+900)=0 t(t-30)-30(t-30)=0 (t-30)^2=0 divide tru by (t-30) you get t=30
October 14, 2015

Infinity series i need help also
To what value does the sum of 20+12+36/5+.............tends to infinity??
October 14, 2015

Area of a triangle i need help urgently
in triangle ABC b=6 c=8 and angle A=60degree find the area of a triangle.let AD be the bisector of A where D lies on BC and AD=K?? Show that AD=24root3/7...
October 14, 2015

MATH
(1): no option (2) option B Is accurate (3) option C is accurate (4):option A is accurate these are algebra jus use bodmas for a starting
October 14, 2015

MATH
You mean these 5/5+h-1/5/6 5-(5+h)/5(5+h)/h 5-5+h/25+5h/h h/25+5h/h h/25+5h*1/h 1/5(5+h).....
October 14, 2015

college algeb
(1):3(t+1)>2t 3t+3>2t 3>2t-3t t<-3 (2):2p+1/5>-3 2p+1>-3*5 2p+1<-15 2p<-16 p<-8 (3): x^2-3x-10>=10 x^2-3x-20>=0 solve quadraticly
October 14, 2015

Math
(1):(3-7i)+(-1-2i) -3-7i-1+2i -7i+2i-3 -3-5i....... (2):(4-5i)+(7-3i) 4-5i+7-3i 4+7-5i-3i 11-8i (3): (7-5i)+(6+9i) 7-5i+6+9i 7+6-5i+9i 13+4i (4):3+2i/3-5i nothing to simplify
October 14, 2015

glgmnhs
Use these lenght=tita/360*2(pi)(r) tita=30 pi=22/7 r=5 just plug into the formula and get your lenght
October 14, 2015

Maths;function i need help
(1):Given the cost function c(x)=10+2x and the revenue functio r(x)=3x,find break even quantity and the price (2):if the marginal cost of producing x unit is given by c'(x)=0.4x^3+2x and the fixed cost is p4000.00 find the cost function c(x) and cost produnction 40unit???
October 14, 2015

Math
Direct substitution will help you jus plug the unknown variable for x and y into your above equation
October 14, 2015

Defective probability i need help
If 3% of electric bulb produced by a company are defective find the probability that in a sample 100bulbs (a) 0 (b)1 (c)2 (d)3 bulbs are defective??
October 13, 2015

Algebra 2
3x+2/7=2 3x+2=14 3x=14-2 3x=12 x=4
October 13, 2015

Algebra 2
X+2y=17.....1 x-y=2......2 subtract 2 from 1 -3y=-15 y=5 ur turn
October 13, 2015

Algebra 2
X+2y=17.....1 x-y=2......2 subtract 2 from 1 -3y=-15 y=-5 ur turn
October 13, 2015

Revolution and frequency i need help physics
A spring makes 60 revolution in 15mins calculate the period and the frequency of the revolution??
October 13, 2015

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