Mathematics

Simple Algebra 2 problem

Hey i have a final reveiw for my advanced algebra 2/ trig class, and i forgot how to do this problem: its square root x+12= x what are the solutions? -3 4,-3 4 no solution how do i do this??-sqrt(

Solve x^2/3 -3x^1/3-18= 0.

Please include all the steps too! Thank you!-it is v ez x^2/3 -3x^1/3-18= 0 let y = x^1/3 y^2 - 3y - 18 =0 (y -6) (y+3) = 0 y = 6 or y = -3 x^1/3 = 6 x = 6^3 = 216 ---answer x^1/3 = -3 x = (-3)^3

Help on 7 grade math!!!

here is the question... Rectangular cake pans X and Y are similar.The Ratio of the width of pan X to the width of pan Y is 3 : 4. The length of pan X is 10 inches, and its width is 5 inches. What is t

Select the set of equations that represents the following situation: The cost of six CDs and twelve DVDs is

Select the set of equations that represents the following situation: The cost of six CDs and twelve DVDs is $73.26; and the cost of thirteen DVDs and twelve CDs is $140.11. How much do a CD and a DVD

Sequencing question help

For an arithmetic sequence, let a1 = 5 and d = -2 Find: an, a10, s10 For an arithmetic sequence, let a2 = 15 and a10 = 10 Find: d, a1-Since a1=5, d= -2 an = a + (n-1)d Thus, an = 5 +(n-1) (-2) ->

How do I evaluate the integral (Calculus 2)

Integral 1 / ((sqrt(x))(1+x))dx It tells me to change x=(sqrt(x)^2) to make things easier. But, for me it just made things a little bit harder. I can do it without changing it. Can any help? Thanks-H

Need help with some math

I probably learned this in 5th grade but somehow Im stumped. Let me try to make this simple. If I have a chart with the numbers 1 through 25 and I have to select 5 numbers at random (cant pick the sam

Trig help please?! Thanks!

So i have this problem that i dont remember how to figure out: You are standing under a flagpole and are 12 ft away from the very top of it. If the flag pole is 4 ft tall, what is the angle of elevat

Which expression is equal to this? (a,b,c,d) *easy to read problem->

http://i51.tinypic.com/e0pw8l.jpg http://i51.tinypic.com/2lnjtzq.jpg person to help gets Best Answer. :) Thanks.-The expression which is equal to (xy^3)^1/2/(x^3y)^1/4 is C. y^5/4/x^1/4-This = [x

How do you determine whether the inverse is a function

Example: Im given 4 pairs and theyre [(-1,-2),(-3,-2),(-1,-4),(0,6)] I know that the inverse is [(-2,-1),(-2,-3),(-4,-1),(6,0)] but how do I determine whether the inverse is a function?-Notice that th

Trigonometric Form Question

Find the trigonometric form: z = (5/2)((sqrt 3) -i)) Ok. I did the following: z=r(cosθ + isinθ) r=12.5 tanθ = 11pi/6 (because it is in quadrant 4) To end with : z = 12.5(cos(11pi/6) + sin(11pi/6)) H

Ok, last question im asking for help on? 10th grade

the other problems ive had an idea of how to solve them but not this one, im finding x for: 3x+2 / 5x+2x-1 / 2x= 4 so does do you have to find the common denominator first like the other ones? which

Help with percentages please

1. 10% of £12.50 2. 25% of £440 3. 50% of 16 4. 20% of 270 5. 5% of £18.60 6. 90% of 200 Thanks-1. 10/100 x 12.50 = £1.25 2. 25/100 x 440 = £110 3. 50/100 x 16 = 8 4. 20/100 x 270 = 54 5. 5/

What is the equation of the normal line to the curve y = x^2 - 3x + 5

Heres the whole problem: Find a equation of the normal line to the curve y = x^2 - 3x + 5 at the point where the slope of the tangent line and the rate of change of the slope of the tangent line are

Simplify and Identify any x-values ->

I need help simpifying and identifying x-values for this 2x^2+5x^3 / x If anyone will help they will get *Best Answer :) Thank-(2x²+5x³)/x -->factor the numerator x²(2+5x)/x x(2+5x)-because all t