Mathematics

((7x-3)/(14x^2-69x+27))/((6x^2)/(18x-81)) Simplify This Expression.

I have this problem on my homework and i cannot seem to figure it out. The answer i got is: 9/6x^2-7x - 3.............................6x^2 ______________ ÷ _____________; factor the denominators 14x^

How to prove a intersection b = the empty set

a and b are sets, prove a intersection b = empty set if and only if power set of a intersection with the power set of b = empty set.-I will use * for intersection, 0 for the empty set. let P(s) be the

Maths HELP please!! Can someone solve this

A bath toy bought for $x is sold for $24, makingx% profit. What was the cost of the toy? thankyou very much-% means per 100 so x% = x / 100 (24 - x) / x = percent profit = x% = x / 100 (24 - x) / x

NEED MATH ANSWERS WILL GIVE 10 POINTS!

Im nearly done this Absurd 357 questions but i need to go to work in 2 hours and need some sleep please help . 1.Simplify:(x - 2)(x + 3)----------------(x - 3)(x - 2) 2. What are the restrictions on t

Binomial/Combinatorics Help!

Show that: (5 C 3) + (5 C 3) = (6 C 3) Thanks!-(5 C 3) + (5 C 3) =2*(5!/(2!*3!)) =5!/3! =(5!/3!)*(6/6) =6!(3!*3!) = (6 C 3)-(5 C 3) + (5 C 3) = (6 C 3) L.H.S. = (5 C 3) + (5 C 3) = 5*4*3 / 3*2*1 + 5

Laurent series question!

f(z) = (z^2-2)/(z(z+1)(z-2)) = 1/z - 1/(z+1) + 1/(z-2) a) Compute the Laurent Series of f(z) on 0 b) Compute the Laurent Series of f(z) on 1 Im very confused as to what the question wants.Please h

What is 'fixed volume'

It is the volume of a geometrical shape that will not vary.

Select the set of equations that represents the following situation: The sum of two numbers is 77, and thei

Select the set of equations that represents the following situation: The sum of two numbers is 77, and their difference is nineteen less than the smaller number. What are the two numbers? 2y = 77; 77

Must the leading entry in a Reduced Echelon Form be a 1

In a Reduced Echelon Form matrix, must the leading entry be a 1? Can a leading entry be not a 1, say 5, and still considered as a Reduced Echelon Form? Thanks.-Yes, the leading entry of each non-zero

Can someone help me with Logarithms please

Show your work too ! Thanks , Solve for X 1) Log3 (2x + 9) = 5 2) X = ln225.9 3) 2^x + 3 = 9.2 4) log2 (2x - 3)^3 = 12-1) Log3 (2x + 9) = 52x+9=3^52x+9=2432x=234x=117 2) X = ln225.9x=5.42 3) 2^

Calculus help! Need help with 2 derivative problems!

find the derivative of each function. a) f(x) = 20^8x b) g(x)= log(sub 5) 25x-a) f (x) = 8*ln(20)*20^(8x) b) To do this one without the equation for deriving logs you would do: y = log5_(25x) Rew

Help me solve this math equation thanks ;)

Bus can hold 50 people Adults charged $8 each, child $2.50 Bus is full and $196.50 is collected Find number of children, equation needed.-8A + 2.5 C=196.50because you charge that much per adult or ki

*MATH HELP* how exactly do you do the work for finding the missing terms in a arithetic sequence

question is: 5,____,____,____,-7 and another thing i need help with is ___,8____,____,44 so I just need to know like what forumla or how you would work out to find the missing numbers... weather you

What is the solution of y'=(y+9x)^2, v=y+9x...Please

y=(y+9x)^2, v=y+9x. v=y+9x. Hence dv/dx=dy/dx+9 i.e dy/dx=dv/dx−9 hence dv/dx−9=(v)² →dv/dx=(v)² +9 or dv/(9+v²)=dx (1/3)(tan‾¹(v/3) =x+C or(1/3)(tan‾¹{(y+9x)/3} =x+C or tan(3x+3C) =(y+9x)/3 or y= 3t

How many folds of rational symmetry would a square with a plus sign in it have

and how many lines of symmetry would it have?-Lines of symmetry = 2 diagonal + vertical + horz = 4 Rotational symmetry: 4-fold (since you can rotate it through 90deg etc 4 times)