Thursday

November 26, 2015
Total # Posts: 127

**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*

**Steve need your help probability**

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 d(3) bulbs will be defective???
*October 13, 2015*

**Surd help plz**

You ar given that root(59.3) = 7.70 and root(5.93) = 2.44. Find root(59300)???
*October 13, 2015*

**algebra**

27/1000000/9/1000000 27/10^6/9*10^6 27*10^6/9*10^6 27/9=3
*October 13, 2015*

**Geometry**

Area=1/2bh area*2=bh b=area*2/h area=30cm^2 h=6cm b=? B=30cm^2*2/6m b=60cm^2/6cm b=10cm
*October 13, 2015*

**trignometry**

I guess that is the heighr of the cliff 350 but what borders me is the angle 300301 can an angle inside a triangle be as bigger as that??
*October 13, 2015*

**math**

Let the shoe be=p and the sock=q 2p+4q=109...first statement 3p+5q=160....second statement .......... (2p+4q=109)3 (3p+5q=160)2 6p+12q=327 6p+10q=320 ................... -2q=-7 q=3.5
*October 12, 2015*

**Algebra badly need help**

If (x+1/x)^2=3 then x^72+x^66+x^54+x^36+x^6+1=?? Plz help so confuse
*October 11, 2015*

**physics **

In the figure, a radar station detects an airplane approaching directly from the east. At first observation, the airplane is at distance d1 = 350 m from the station and at angle θ1 = 31° above the horizon. The airplane is tracked through an angular change Δθ...
*October 11, 2015*

**Physics i need hlp i have exams next weeks that is why i post the question that which i cannot do**

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 are constant.find the value of v in terms of a and b to give the maximum cost,and also find the cost???
*October 10, 2015*

**Geometery i need help**

Thanks steve
*October 10, 2015*

**Geometery i need help**

What formula do i use steve the question look difficult for me that is why i asked help me plz
*October 10, 2015*

**Geometery i need help**

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??
*October 10, 2015*

**How many of these number maths??**

Thanks steve
*October 10, 2015*

**How many of these number maths??**

(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 are greater than 3400000 and are divisible by 5 (d):how many are greater than 3400000 and are even ????
*October 10, 2015*

**Calculus i need help**

Find dy/dx if x^2.y+sin(xy)+y^4.x^2+3xy=5???
*October 10, 2015*

**Probability i need help**

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 each class.find the probability that (a):both learners are boys (b):the choosen learners are of different sexes????
*October 10, 2015*

**Ohh steve **

My friend ask me to do it so i jus asked if it were possible but what about 13/11 can it be equal to 2???
*October 10, 2015*

**Prove also need help**

X/y=z prove that 13/12=2???
*October 10, 2015*

**Trigonometry prove need help**

Prove that (1-sinb)/(1+sin2b)=tan^2(45-b) plz the b means beta???
*October 10, 2015*

**Permutation need help plz**

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 be less than 4000 -numbers may be repeated -codes have to be even numbers??????
*October 10, 2015*

**Algebra i need serious help**

|x-3|=|3-x| find x???
*October 8, 2015*

**Division need help urgently plz**

1997^913 when it is divided by 10 what is the remainder???
*October 8, 2015*

**Find x algebra help**

X^2-1=2^x?????
*October 8, 2015*

**Probability help**

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 ??????
*October 7, 2015*

**Simultaneous equation**

Yez i got that steve thanks so much wish to be like you someday
*October 7, 2015*

**Simultaneous equation**

Steve can u please just interpret what you are saying for me please..so that i can continue
*October 7, 2015*

**It is**

Plz it is 3z not 4z
*October 7, 2015*

**Simultaneous equation**

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) puting 4 into 3 bck (x+y)^3-3xy(x+y)+z^3=97.......(5) now from 1 x+y=1-z......(6) putin 6 into 7 we have (1-z)^3-3xy(1-z)+z^3=97 [1-2z+z^2](1-z)-3xy(1-...
*October 7, 2015*

**Algebra wait for mathematician steve to confirm**

K(x)=x^2-2x+1 where a=1 b=-2 c=1 but he graph of kx=ax^2+bx+c the co-ordinate x of th vertex is -b/2a then the y co-ordinate is h(-b/2a) xco-ordinate=-b/2a=-2/2(1)=-1 y cordinate=-b/2a=h(-1)=(-1)^2-2( -1)+5=0=6 y-intercept now but y-intercept now is given by y=c from your ...
*October 7, 2015*

**Angle of depression need help also**

A fighter plane is flying horizontally at a constant speed of 600km/hr and the pilot observes an oil drolling platform in the sea at an angle of depression 60degree,after flying in 30sec.in the same direction the pilot notices that the depression angle has become 45degree....
*October 7, 2015*

**What must be added maths need help**

What must be added to x/y to make it y/x??
*October 7, 2015*

**algebra**

sory h=2a/b it was a typo
*October 3, 2015*

**algebra**

A=1/2bh 2a=bh b=2a/b easy
*October 3, 2015*

**calculus i need help also**

I got 7/2 it is dy^2/dx^2 not dx^2/dy^2 here is the oda that got me confused find the value of the constant integration if (x^1/2+x^1/3)dx=0 at x=1
*October 3, 2015*

**calculus i need help also**

If y=2x^2-21x^2+60x+6 what is the value of x? dx^2/dy^2=0
*October 3, 2015*

**shalee**

how do i get into dat site u recommended
*October 3, 2015*

**calculus need help**

use the first principle to obtain the differencial coefficient y=1/(2x-1)
*October 3, 2015*

**Integration need help**

Integrate (6x^2-cos(2x))dx??
*October 3, 2015*

**Prove that sin(A+B) need help**

Show that sin(A+B)=sinAcosB+sinBcosA... diagram can be use if necessary????
*October 3, 2015*

**Prove that sin(A+B)**

Show that sin(A+B)=sinAcosB+sinBcosA... diagram can be use if necessary
*October 3, 2015*

**Maths division jus xo confused need help plz**

If 2^2011 is divided by 13 what is the remainder???
*October 3, 2015*

**HELP PLZ WITH MATH**

The answer is clearly 1/64......since 1/8^2*1=1/64..........
*October 2, 2015*

**Math**

I don,t tink any option there has the anser because 1/8^2*40 40/8^2 8*5/8^2 (2^3)*5/2^6 2^3-6*5 2^-3*5 5/8........or u can jus inverse it and take to the lowest term
*October 2, 2015*

**Tanx reiny**

Your a genius tanks reiny
*October 2, 2015*

**But steve**

But steve my math teacher told me to apply somekind newtons law in it don't no how any ideal??
*October 2, 2015*

**I need help maths jus so confused**

X^x=100 findx? these question is still like a black magic to me
*October 2, 2015*

**Logarithm prove abc **

If logxbase2x=a log2xbase3x=b log3xbase4x=c show that abc+1=2bc??
*October 2, 2015*

**Find x and y and also log **

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????
*October 2, 2015*

** Help!! Geometric progression**

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):in A G.P the product of the 2nd and the 4thterm is double ,the 5th term and the sum of the first 4 term is 80.find the G.P??
*October 1, 2015*

**Perumutation**

In how manys ways can nine women be sitted on a round table if two paricular women must not sit next to each other??
*October 1, 2015*

**Sphere find x**

What happen steve why??
*October 1, 2015*

**Sphere find x**

Tnx reiny........bess yah
*October 1, 2015*

**Sphere find x**

How did u got 72.8% but i get what your are saying tnx
*October 1, 2015*

**Sphere find x**

If the diameter of a sphere is increase by 20% the volume also increased by x% find x??
*October 1, 2015*