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Collins

Questions and answers by visitors named Collins

Questions (127)

Two boys A and B are at two diametrically opposite points on a circle. At oneinstant the two start running on the circle; A
1. 4 answers
2. 2,381 views
A car is moving along a straight road. The graph below shows how the speedvaries with time. "'0 W WCl. (/) time - Which of the
1. 3 answers
2. 1,514 views
In order to save one million naira for the purchase of some goods a man save #1,#2,#4 #8 on the first,second,third and fourth
1. 3 answers
2. 514 views
Question(1):A G.P has a common ratio of 2 find the value of 'n' for which the sum 2n terms is 33 times the sum of n??Question(2)
1. 5 answers
2. 1,835 views
m varies directly as the cube of n and inversely as g
1. 4 answers
2. 3,757 views
Express each ratio as a fraction in it's lowest terms. 3600s:2hours
1. 9 answers
2. 1,664 views
What is molecular mass of CuSO4(NH4)SO4.H2O
1. 2 answers
2. 599 views
A new set of car tires has a tread depth of 8 millileters. The tread depth decreases 0.12 millimeter per thousand miles driven.
1. 3 answers
2. 960 views
(1):Y=|n(3x^2+2)(2):y=e^(x^3+x)
1. 1 answer
2. 293 views
Find the limit of f(x)=1/(x-1) as approaches 1think inifnite limit
1. 1 answer
2. 382 views
I have some bananas on sunday,on monday morning i ate some of them and at night it became double,on tuesday morning i ate same
1. 3 answers
2. 472 views
I have some bananas on sunday,on monday morning i ate some of them and at night the bananas became double on, tuesday morning i
1. 1 answer
2. 458 views
The following simultaneous equations are written in base two11x+10y=10001 10x-y=10 solve and live your anser in base two?? plz
1. 7 answers
2. 3,063 views
The nth term of a sequences of v1,v2,v3 is given by Vn=6 2^n(1):show that for all value of n>1 Vn1=2(Vn-3)?? (2): obtain and
1. 1 answer
2. 410 views
Integrate sin6xcos5xdx?
1. 2 answers
2. 594 views
If the daimeter of a sphere is increased the volume will be increased by x% find x?
1. 1 answer
2. 340 views
X+y+z=2x^2+y^2+z^2=3 x^3+y^3+z^3=5 find x,y,z.....?? honestly i having being battle with that question for ova a month i need
1. 1 answer
2. 348 views
37 men each do 7hours 35min work in a day,per what total working time in a week per six days,dose their employer have to pay
1. 1 answer
2. 392 views
The average wage of a class of 21 boys is 14year 3month.if the oldest boy is not counted in,the average drop to 14years
1. 1 answer
2. 384 views
The average age of a class of 21 boys is 14year 3month.if the oldest boy is not counted in.the average drops to 14years
1. 6 answers
2. 1,151 views
X^x(root(x)=(xroot(x)^x???? Find x
1. 3 answers
2. 305 views
If the diameter of a sphere is increase by 20% the volume also increased by x% find x??
1. 9 answers
2. 429 views
In how manys ways can nine women be sitted on a round table if two paricular women must not sit next to each other??
1. 1 answer
2. 418 views
Question1:2^x+y=6,3^x-y=4 find x and y????quesstion2:a^2+b^2=7ab show that log(a+b)=log3+(loga+logb)/2????
1. 1 answer
2. 447 views
If logxbase2x=alog2xbase3x=b log3xbase4x=c show that abc+1=2bc??
1. 4 answers
2. 1,027 views
X^x=100 findx? these question is still like a black magic to me
1. 5 answers
2. 465 views
If 2^2011 is divided by 13 what is the remainder???
1. 4 answers
2. 1,129 views
Show that sin(A+B)=sinAcosB+sinBcosA...diagram can be use if necessary
1. 1 answer
2. 303 views
Show that sin(A+B)=sinAcosB+sinBcosA...diagram can be use if necessary????
1. 3 answers
2. 306 views
Integrate (6x^2-cos(2x))dx??
1. 3 answers
2. 338 views
What must be added to x/y to make it y/x??
1. 1 answer
2. 295 views
A fighter plane is flying horizontally at a constant speed of 600km/hr and the pilot observes an oil drolling platform in the
1. 2 answers
2. 747 views
X+y+z=1......(1)x^2+y^2+z^2=35........(2) x^3+y^3+z^3=97.........(3) solution but from 3 (x^3+y^3)=(x+y)^3-3xy(x+y)......(4)
1. 6 answers
2. 876 views
In a football match A vs B in which 7 goals were scored and A won the match what is the probability that the score is 7-0 ??????
1. 1 answer
2. 397 views
X^2-1=2^x?????
1. 1 answer
2. 271 views
1997^913 when it is divided by 10 what is the remainder???
1. 1 answer
2. 332 views
|x-3|=|3-x| find x???
1. 3 answers
2. 342 views
How many 4 digit codes can we make provided that-the codes contain of numbers only -codes may not equal to 4000 -codes may not
1. 1 answer
2. 501 views
Prove that (1-sinb)/(1+sin2b)=tan^2(45-b) plz the b means beta???
1. 3 answers
2. 535 views
X/y=zprove that 13/12=2???
1. 5 answers
2. 347 views
In a form 1A class there are 25 boys and 20 girls.in a form 1B there are 20boys and 15girls.A learner is choosen at random from
1. 3 answers
2. 545 views
Find dy/dx if x^2.y+sin(xy)+y^4.x^2+3xy=5???
1. 1 answer
2. 346 views
(a):how many digit number can be formed with the digit 2,2,2,3,3,4,5(b):how many of these are greater than 3400000 (c):how many
1. 3 answers
2. 586 views
A rubber band is use to tie 9 oranges of diameter 8mm.if the band just touches 8 oranges .find the lenght of the band??
1. 5 answers
2. 372 views
The cost C of running a ship on a certain voyage is said to be given by c=av+b/v where v is the average speed in km/h and a,b
1. 2 answers
2. 547 views
If (x+1/x)^2=3then x^72+x^66+x^54+x^36+x^6+1=?? Plz help so confuse
1. 1 answer
2. 307 views
You ar given that root(59.3) = 7.70and root(5.93) = 2.44. Find root(59300)???
1. 1 answer
2. 333 views
If 3% of electric bulb produced by a company are defective find the probability that in a sample of 100bulbs(a) 0 (b) 1 (c)2
1. 1 answer
2. 487 views
A spring makes 60 revolution in 15mins calculate the period and the frequency of the revolution??
1. 3 answers
2. 446 views
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
1. 5 answers
2. 1,644 views
(1):Given the cost function c(x)=10+2xand the revenue functio r(x)=3x,find break even quantity and the price (2):if the marginal
1. 2 answers
2. 586 views
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
1. 1 answer
2. 382 views
To what value does the sum of 20+12+36/5+.............tends to infinity??
1. 4 answers
2. 570 views
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=Ksh
1. 2 answers
2. 684 views
A car travelling at 60km/hr started a journey travelling in an oppsite direction to his destination.After travelling for 35min
1. 3 answers
2. 849 views
Integrate x^xdx??help so the solution it to difficult for me
1. 1 answer
2. 417 views
Integrate x^xdxit is to difficult if wolfram can help any link or something
1. 1 answer
2. 337 views
If y=ws^3/d^4find the percent increase in y when w increase by 2% s decrease by 3% and s decrease by 1% plz show the full
1. 1 answer
2. 459 views
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
1. 3 answers
2. 392 views
If € , ß are the roots of the equation2x^2 + 4x - 3 = 0 and €^2 , ß^2 are the roots of the equation x^2 + px + q = 0, find
1. 1 answer
2. 464 views
If y=ws^3/d^4find the % increase in 'y' when 'w' increases by 2% and 's' decreases by 3% and 'd' increasee by 1%...... There a
1. 4 answers
2. 1,022 views
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
1. 5 answers
2. 454 views
|BM|,|CN| are altitude of a triangle ABC if AB=3.5 AC=3.2 BN=2.1calculate the area of the triangle and hence find
1. 3 answers
2. 727 views
Show thatSin(A/2)=root(1/2(1-cosA)??
1. 2 answers
2. 617 views
Last three year kemi who happens to be my sister was 2wice as old as my lovely brillant primary school friend femi,last three
1. 2 answers
2. 675 views
Last year kemi who happens to be my sister was 2wice as old as my lovely brillant primary school friend femi,last three years
1. 3 answers
2. 753 views
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
1. 1 answer
2. 436 views
Show that cos^2(theta)+tan(theta)cosec(theta)=cos???Show work
1. 3 answers
2. 561 views
Integrate:Sinxcosx/a^2cos^2(x)+b^2sin^2(x))dx???plz i need the full working too hard for me
1. 2 answers
2. 817 views
X^-y=158y^2-x=108 find x and y?? Show work
1. 1 answer
2. 345 views
Solve using implicit derivativecuberoot(x)+cuberoot(xy)=4y^2
1. 1 answer
2. 396 views
Find the integral of §x^1/2.e^xdxat upper limit of 1/2 and lower limit of zero..show work plz
1. 1 answer
2. 459 views
Find the equation of the line tangent to the parametric curve define byx=cos2t and y=sin3t and t=pi/12 plz i don't no where to
1. 2 answers
2. 543 views
Plz help me solve for x and yx^3+y^3=1 x^4+y^4=1 help???
1. 1 answer
2. 335 views
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
1. 2 answers
2. 619 views
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
1. 2 answers
2. 1,266 views
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
1. 2 answers
2. 626 views
X^x+y^y=31x+y=5 plz help i was told to use newton litrate method plz help
1. 1 answer
2. 330 views
4x^2+8x-m=0,differs by 3 find the value of the constant mplz help me??
1. 5 answers
2. 413 views
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)
1. 5 answers
2. 351 views
3cosx+4sinx=5what is x is too difficulat form me to solve? Shw working please
1. 7 answers
2. 2,507 views
tanA=ntanBsinA=msinB find cos^2A in terms of 'm' and 'n' plz help
1. 3 answers
2. 591 views
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
1. 4 answers
2. 3,096 views
(Cosx)^y=x^siny find dy/dx at point pi/(4,0)
1. 3 answers
2. 393 views
Two circular flower beds have a combined area of (29¥)/2m^2. The sum of the circumferences of the flower beds is 10¥m.
1. 2 answers
2. 829 views
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
1. 4 answers
2. 1,049 views
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
1. 5 answers
2. 3,337 views
Dy/dx=x+x^3/yplz show your work
1. 3 answers
2. 342 views
Dy/dx=(X+x^3)/yhelp show working
1. 5 answers
2. 307 views
Evaluate x in1/x<x
1. 1 answer
2. 294 views
What is the sum of the digit in4444^4444
1. 4 answers
2. 763 views
Evaluate in(cuberootof(x+1)/(x-1)).1/(x+1)dx help plz
1. 4 answers
2. 304 views
Integrate:sinxcos(x-1/4.pi)dx
1. 6 answers
2. 329 views
Integrate:cosmxcosnx.dx if m=ni can not solve it i have tried my best but to no avail
1. 1 answer
2. 276 views
Show that if y=tanx/2dy/dx=1/sinx
1. 1 answer
2. 306 views
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
1. 7 answers
2. 3,213 views
Integrate: xrootof(2+3.fourth rootof(x^3)/x^6.root(x)plz help i do not no it at all show working!!
1. 4 answers
2. 383 views
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!!
1. 1 answer
2. 409 views
find the number of root the equation given below in interval (-pi.pi)(cosx)^7+(sinx)^4=1
1. 3 answers
2. 346 views
If x and y satisfy the equation (x+5)^2+(y-12)^2=14then find the minimum value (x^2+y^2) plz help show working
1. 1 answer
2. 376 views

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