Mathematics

Can anyone please help me with this algebra problem

Solve, exspess the solution in interval notation. a) x^3+5 b) (x^2-9)/(x-2)>3-you just have to use FOIL method

Can some one help me with this algebra problem

For the data below: year, x ----------------number of ecectically filed tax returns, z (in millions) 1995, 0 ----------------11.807( There are no negative I just used --to space) 1997, 2 ------------

Math 9 help??? Can;t solve these problems!!!

1.)2x(5x/2-2x/5) 2.)Solve for x: 2x+3y=81 3x-6y=-57 3.)Find the length of the diagonal, to the nearest tenth of an inch, of a rectangle piece of paper that measures 8 1/2 by 11 inches. 4.)Given t

Simplify this expression (quite easy)

1/x+2/y Im stuck... Thanks in advance :).-1/x + 2/y y/xy + 2x/xy =(2x+y)/xy-(y+2x)/(xy)

Help with partial fractions.

I need to re-express the term, (z - r)^(-2) so one over (z - r) squared, where r is a positive real number and z is a complex variable. into multiple fractions of the form: A(z - a)^(-1) + B(z - b

Can someone help me with this algebra word problem

Angelo kayaks 20 km upstream in 3 hr and returns in 1.5 hr. How fast is the stream flowing and how fast does Angelo paddle in still water?-x – speed of Angelo y – speed of the stream Equations: 20

Substitution problems

im in desperate need of your help! Solving linear Equations by Substitution. 1. x - 3y = 114 3x + 7y = -154 (a) (21, -31) (b) (-31, 21) (c) (4, 12) 2. 19x - 10y = -269 19x - 12y = -243 (a) (2, -27)

Use implicit differentiation and logaritmic differentiation.

Find y if x^y=y^x The answer is:(lny-(y/x))/(lnx-(x/y)) How does this happen?-Take log on both sides y lnx = x lny y lnx + y/x = lny +xy/y y (lnx - x/y ) = lny - y/x Thus y = (lny-(y/x))/(lnx-(x/

Solve each of the following equations for 0° ≤ θ < 360°

I dont know to do this, I only have a few days pleas help. Solve each of the following equations for 0° ≤ θ 1.) 2 cos θ = 1 2.) (tan θ + 1) (sec θ – 1/2) = 0 3.)sin2 θ + 3 sin θ + 2 = 0 4.) sin

MATHS HELP PLEASE! :)

A farmer uses 60m of fencing to make three sides of a rectangle sheep pen.The fourth side of the pen is a wall.Work out the length of the shorter sides of the pen if the area enclosed is 448m squared.

I'm thinking of a number between one and ten

wow peachy perfect way to take my answer !! Go recharge your batteries!-Ok, now double it, add 8, half it, and take away the number you first started with.......... Your answer is ............. 4 !!!

Geometry HELP!! KITES!!!

please help me with these problems. i have no idea how to solve these. thanks 1) http://www.flickr.com/photos/41386616@N06/5834091246/in/photostream Solve for AB 2) http://www.flickr.com/photos/413

What is the minimum perimeter possible for a rectangle with an area of 500 cm^2

The minimum is when the rectangle is square, A = s^2. Since you have the area, you know what the side length is, and therefore what the perimeter is.-Short answer: the minimum perimeter of a rectangle

What would the result of integrating the equation twice be? d^2T/dx^2 + (constant)=0

Thanks =)-Note that the differential in the numerator names the function, and the differential in the denominator names the variable, thus this is equivalent to the second derivative of T(x). T(x) +

Find the inverse function.

g(x)=(e^x)/(1+2e^x) The answer is: ln(x/(1-2x)) How?-You essentially have y = (e^x)/(1+2e^x). To find the inverse, you switch the x and y and solve for y. Switching x and y gives you x = (e^y)/