Friday
May 6, 2016

Posts by Edward

Total # Posts: 364

Chemistry
addition of conc H2SO4 to Ph-CH(CH3)OH gives product?????
May 4, 2016

math
anyone able to solve my problem
May 4, 2016

math
no circumference=3.14(diameter)
May 4, 2016

math
u got the answer????
May 4, 2016

life orientation
poor service delivery
April 23, 2016

ENGLISH
TRADITIONAL AFRICAN MARRIAGE IS AN ADVANTAGE OF MAN ONLY NOT WOMEN
April 11, 2016

Vectors
a, b, c are 3 vectors such that |a|=2|b|=4|c| (|a|=modulus of a vector) and 2a-3b+6c=0 (a is a vector) then find cos(x) between a and b.
March 30, 2016

Biology Honors
Hardy-Weinberg: Within a population of birds, 21 percent of them display the recessive phenotype for a particular trait. What are the allele frequencies for this trait assuming the population is in genetic equilibrium? I'm absolutely confused on this ;l
March 27, 2016

Maths
Lt (((1+×)^(1÷×))÷e)^1÷× x->0
March 2, 2016

Algebra
Find the intercepts if any x^2+y^2+8x-8y-49=0 EW1
February 9, 2016

Probability
The no. Of 5 digit no.s Such that sum of their digits is even is=
February 8, 2016

Probability
If no.s are srlected randomly then what is probablity to above question
February 8, 2016

Probability
From set of 20 natural no.s 2 are selected. find probability that their sum is 1.odd 2.even 3.selected pair is twin prime
February 8, 2016

algebra
Find the distance d (P1, P2) between the points P1 and P2 P1 = (−4, 4) ; P2 = (1, 6) d(p1,P2)= ____ (Simplify your answer. Type an exact answer, using radicals as needed.) qaz
February 4, 2016

algebra
Find the midpoint of the line segment joining the points P1 and P2 P1= (5,2) P2= (-4,3) The midpoint is _______ (Type an ordered pair. Use integers or simplified fractions for any numbers in the expression.) qaz
February 4, 2016

algebra
Find the equation of a line that is parallel to the line y = −3x and contains the points (9,−4). Y=______ (Type your answer in slope-intercept form.) qaz
February 4, 2016

algebra
Find the equation of a line that is perpendicular to the line y = 1/4x + 5 and contains the point (-6, 0) Y=________ (Type your answer in slope-intercept form.) qaz
February 4, 2016

algebra
Find the intercepts and use them to graph the equation. Y = x-7 qaz
February 4, 2016

algebra
A circle has the equation x squared plus y squared plus 8 x minus 8 y minus 49 equals 0 Graph the circle using the center (h,k) and radius r. Find the intercepts, if any, of the graph. qaz
February 4, 2016

Algebra
Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation x^3+x^2+16x+16>0 What is the solution set? (Type your answer in interval notation.) qaz
February 4, 2016

Binomial
sorry power 6 on bracket
February 4, 2016

Binomial
sooey there is power 6 on full bracket
February 4, 2016

Binomial
coefficient of x^4 in (3(x^2)-x+2)
February 4, 2016

algebra
Write the expression as a sum​ and/or difference of logarithms. Express powers as factors. log3(27x)
February 3, 2016

algebra
Solve the exponential equation. Express the solution in terms of natural logarithms. Then, use a calculator to obtain a decimal approximation for the solution. e^x = 20.9 What is the solution in terms of natural logarithms? The solution set is { }.
February 3, 2016

Algebra
Solve the logarithmic equation. Be sure to reject any value of x that is not in the domain of the original logarithmic expression. ln ã(x+4)=1 What is the exact solution? Select the correct choice below and, if necessary, fill in the answer box to complete your ...
February 3, 2016

Algebra
Find the domain of the composite function f◦g. Find the domain of the composite function f◦g. F(x)= 3/(x-3); g(x)= 2/x
February 3, 2016

Algebra
The population of viruses in an influenza culture after t hours is given by the function x(t) = 4et/2.5 The cost y in dollars for a new automated microscope to count x viruses in a sample is y(x) = ln 2x Create the composite function that calculates the cost y in dollars of ...
February 3, 2016

Permutation and combination
How many natural numbers are there with the property that they can be expressed as sum of cubes of two natural numbers in two different ways.
February 3, 2016

Michael
How many natural numbers are there with the property that they can be expressed as sum of cubes of two natural numbers in two different ways.
February 3, 2016

Business
How do you calculate classical probability average
January 20, 2016

functions
sources said that differentiation of GIF is 0 but x in GIF is variable .and diff.of simple x is 1.?
October 1, 2015

Functions
Is {e^x} periodic function?
September 26, 2015

physics
the gravitational force on an object on the surface of the earth is F , what's the gravitational force on the satelite when at height R/20, where R is the radius of the Earth ?
September 24, 2015

Maths
What are conditions for taking |x*y|=|x|*|y|
September 20, 2015

Relations and Function
p (x)=x^6 a*x^5 b*x^4 c*x^3 d*x^2 e*x f
September 19, 2015

Differentitate:calculus
Differentitate:X^2.sinx/(x+1)(x^2-1)......???
September 18, 2015

Division:jus confuse
Find the remainder? when 2^2011 is divisible by 13
September 18, 2015

Rectangle
The length and width of a rectangle are integer.if the area is larger than its perimeter by 9 find the perimeter???
September 18, 2015

Trigonometry damon plz help
If the angle of a h meters long tower is in a straight line between two observers A and B angle of elevation of the top of the tower from A and B are alpha and beta respectively and AB=D meters find h/d
September 18, 2015

science
how many years will have to pass before only 3% of radioactive isotope is left if there is a half ye
September 9, 2015

Calculus using the first derivative
Y=e^x differentiate using the first principle
September 6, 2015

Algebraic word problem damon or steve plz interven it urgent
precious father is 5times older than his daughter precious and precious is twice as old as his brother mathew.in two year time the sum of there age wil 58 how old is precious nw
September 2, 2015

factorisation i need cerious itz too difficult
wil it work
September 2, 2015

factorisation i need cerious itz too difficult
x^4+2x^2.y^2+y^4.......plz help
September 2, 2015

simultaneous equation very dificult need help itz urgent
A-C=B/2 A-B=C/6 B+C=32 find A,B,C
September 1, 2015

resolve the partail fraction and then integrate
resolve the partail fraction and then integrate.3x^2-34x+97/(x-5)^3
August 30, 2015

equation
yes reiny daz the question i jus decided to include bracket in it,reiny u got me confuse how come 3^x become 3^-x,but what if i use logarithm can it work?
August 30, 2015

equation
steve can logarithm work 4 dat
August 30, 2015

equation
9^x(-2)+3^3(x)=81 i need help
August 30, 2015

equation
i did not see dat jus it was a typo steve
August 30, 2015

equation
9^x(-2)+3^3x=81.... here is wat i did bt i go confuse (3^x)(-4)+(3^x)3=81 let 3^x=b b/4+b^3=81 multiply tru 4 b+b^3=81
August 30, 2015

word problem
12 is divided into two parts such that the product of the square of one part and fourth power of the other give a maximum,find the two numba
August 29, 2015

integral calculus
integrate. (1):sin2xcos3x (2):5(cos3x)^2
August 29, 2015

Equation
X^2-b(x-1)-1=0 find. (x)
August 27, 2015

equation on tangent of a curve need help
find the equation of a tangent of a curve at point(1,3) x^2.y^3+y^2.x^4+4x^2-14=0,i tried differentiate it n also applying this formula y=mx+b.bt i gt confuse
August 27, 2015

difficult physics i need help
calculate the relative permeability of an iron ring when the exiting current taken by the 600-turns of coils is 1.2A and the total flux produce is 1mwb.the mean circumference of the rings is 50m and the area of the cross section is 10cm^2?...
August 24, 2015

calculus
bt damon daz not the first priniciple
August 23, 2015

calculus
y=2^nx differentiate with respect to x using the first principle
August 23, 2015

critical maths problem need help!!!
show that any fuction y(t)=acosx+bsinx ,satisfied the differential equation y^"+wy=0 and also find the value of (a) and (b)
August 23, 2015

unda geometry cerious need help urgently
find the centroid of the area of the finite region enclosed by the curve y=x^(2)+1 when x-axis and the line x=0 and x=3
August 23, 2015

unda geometry
ok thanks steve,i will do just dat
August 23, 2015

unda geometry
but steve i don,t know it dat is why i posted it so that i can gt help from you guys to help me study further
August 23, 2015

unda geometry
find the centroid of the area of the finite region enclosed by the curve y=x^(2)+1, when x-axis and the line, x=0 and x=3
August 23, 2015

calculus: don't even no where to start from need help plz
i can do that 2x+4x=6x 6x=6x add -6x to both side 6x-6x=6x-6x 0=0 which automatically mean that all real no are the solution
August 23, 2015

calculus: don't even no where to start from need help plz
(1)find dy/dx of y if y=tan^(-1)1/x^2 (2) if y=3z^2.z^2 find dy/dz (3) if y=x^x show that dy/dx=x|n(x+1).. thanks
August 23, 2015

graphical geometry need help
the graph of the relation y=x^2+2x+k, passes through 2 and 0 find the value of k. plz explain
August 22, 2015

Trigonometry
Root3cosx nt root3cos
August 21, 2015

Trigonometry
Sinx+root3cos=1 if 0<=x<360
August 21, 2015

Integration
Integrate.1/root(2x-1)dx
August 21, 2015

Integration help
Integrate.1/root(2x-1)dx
August 21, 2015

algebra
If 192,x,y,3 form a geometic sequence, calculate the valuest of x and y.
August 18, 2015

sensitive probability plz help
i don,t know it that is why i ask for the solution
August 14, 2015

sensitive probability plz help
what about the (ii), (iii) ,(iv), (v)
August 14, 2015

sensitive probability plz help
These are the words that i have found so far (i)sort (ii)this (iii)shot (iv)host
August 14, 2015

sensitive probability plz help
it was a typo bt it is a (word) nt a letter,none it is hard dat is y i ask 4 the solution
August 14, 2015

sensitive probability plz help
yes (history)
August 14, 2015

sensitive probability plz help
(i):find the number of four letter words that can be formed from the letter history (ii):how many of them begin and end with a consonant (iii):how many contain the letter (Y) (iv):how many beging with (T) and end with a vowel (v):how many contain both vowel
August 14, 2015

logarithms maths
yap reiny n tanks
August 10, 2015

logarithms maths
logx+logx+n-logx/n.plz solve with explanation thanks
August 10, 2015

critical probability
in how many ways can be the first four letters of your name be arranged to form a three letter word, (i)when the letter can be repeated (ii)when the letter can not be repeated
August 10, 2015

damon
i don,t have much word to say bt tank you verymuch
August 9, 2015

damon or reiny need ur help God bless you
A rectangular face of a casting 250mmx100mm is to be machined on a sharper.if the average cutting speed is to be 20m/mins and the feed is to be 2mm/stroke,calculate the time taken to machine the face of the casting.Allow 5mm overrun at each end of the stroke
August 9, 2015

physics
scrol down a bit
August 8, 2015

physics
damon,reiny,steve,ms sue.plz get a solution 2 my question please itz urgent!!!
August 8, 2015

physics
damon,reiny,steve,plz get a solution 2 my question plz it is urgent!!!
August 8, 2015

physics
qustion(1):A rectangular face of a casting 250mmx100mm is to be machined on a sharper.if the average cuting speed is to be 20m/min and the feed is to be 2mm/stroke,calculate the time taken to machine the face of casting.allow 5mm overun at each end of the stroke. question(2):...
August 8, 2015

maths
integrate. cos7xcos3xsinxdx.plz help tanks
August 7, 2015

maths
how did u got 27 and 72 i don,t understand
August 6, 2015

maths
A shop is sending out a bill for an amount less than #100.the accountant interchange the two digits and so overcharage the customer by #45,given that the sum of the two digits is 9.find how much the bill should be?.thanks
August 6, 2015

maths
integrate x^xdx.plz explain thanks
August 6, 2015

maths
tank you reiny
August 5, 2015

maths
resolve the partial fraction:x^3+6/x^2(x+3).with explanations thanks
August 5, 2015

maths
resolve the partial fraction: x^3+6/x^2x+6.plz explain thanks
August 5, 2015

chemistry
What are the uses of azomethine?
August 4, 2015

chemistry
Please tell me any website....where I can find details of the experiment Reaction of 4-aminotoluene and o-vanillin(for preparation of azomethine)
August 3, 2015

chemistry
No no....please I want you to tell me some website....from where I can find details of this experiment
August 3, 2015

chemistry
Could you please tell me the objective, theory and mechanism,result, precautions and applications of following experiment : reaction of 4-aminotoluene and o-vanillin(preparation of azomethine)
August 3, 2015

Maths
I can battle with qustion (1), but look at 2&3 i don.t even know were to start from pls help
August 2, 2015

Maths
Question(1):Show that the curve y=x^2-3x-5 passes through the point (5,5),(4,-1),(2,-7),(0,-5) and (-t,5) calculate the gradient at each pont. question(2):given a 5by5 matrices with determinant equal zero and the same determinant of its interior element equals zero question(3...
August 2, 2015

  1. Pages:
  2. 1
  3. 2
  4. 3
  5. 4
  6. Next>>