Mathematics

How to answer 12- ( -5x^2 +x - 7),polynomials

12 - ( -5x^2 +x - 7 how do i answer this? thank you! algebra 1-The only thing we can do is to put out the parenthesis: As it is multiplied by -1... we must change the signals of the terms inside the p

Decide whether y is a function of x? y=-2x-4

Decide whether y is a function of x. y=-2x-4 Yes or no and why?-Yes For each value of x, there is at most only one value for y.-Yes

MATH HELP! PLEASE I need your help!!

Which ordered pair represents F(3) = -5 a) (-3,5) b) (-5,3) c) (5,-3) d) (3,-5)-D, because since in a function, you have F(x) equaling something, whatevers in the parentheses is the x value, and the n

Math question...... helpp

x+y=2 x-y=6 ...... y= ???? What does y equal?-x + y = 2 x - y = 6 Get x alone x + y = 2 __-y = -y x = 2 - y x - y = 6 _+y = +y x = 6 + y Make the xs equal each other 2 - y = 6 + y __-y = __-y2 -

Is it possible for the chain rule to be required when finding the derivative of a fraction

Because I just solved (2x+5)/x^2 and a derivative calculator is telling me the answer is -2(x-5) / x^3. Why didnt I have to chain on the derivative of the numerator?-The derivative calculator is wrong

Math equation help? need help on math equation

How would I solve this? How many liters of 20% alcohol solution should be added to 40 liters of a 50% alcohol solution to make 30% solution?-x = liters 30% solution 40(.5) + x(.2) = (40+x)(.3) 20 + 0.

Lim_ (n → ∞) (1/3^n) Evaluate that limit or state that the limit does not exist. Thanks!

lim_ (n → ∞) (1/3^n) = 0, since 1 is divided by infinity.

If f(x)=∑(n=1 to ∞) (-1)^n*(x-π)^n/n^2 find f '''(x)

So Im trying to find the 3rd derivative of f(x), these are the steps Ive taken trying to differentiate it in the summation form: f (x)=∑(n=2 to ∞) (-1)^n*(x-π)^(n-1)/n f (x)=∑(n=3 to ∞) (-1)^n*(n-1)

How to solve using substitution

y=x-1 x=y-1-substituting y = (y-1) - 1 gives 0 = -2 There is no solution.-that answer is no solution x=x-1-x -1 so no solution

Algebra help 1st correct answers 10 points

1. The equation of a hyperbola is shown. http://www.photoshop.com/users/goofballlsillygirl/assets/fd5f43084c51476b9470e94355ec40d6 What are the lengths of the transverse and conjugate axes? (Points :

Why is 1/3pi r^2(3r)= pi r^3? My math is getting worse and worse...

1 ---π r^2(3r)= π r^3 3 π=3.14=pi r=radius Try to show me what you multiply.-1/3 * pi * r^2 *(3*r) can be expressed as 1/3 * 3 * pi * r^2 * r which can then be written as pi*r^3

Adding and Subtracting Polynomials

Can you answer these for me please? If you would, you would be a Life saver!!! :3 (There are exponents, the numbers outside of the parenthesis are them) (g-12)2 (4x+2)2 (4x-2)2 (3-5x)2 (t+8)(t-8) (c-d

Tell me why the recursive sequence formula is tn=tn-1+(2n+1)

why, from this set of numbers: tn 1, 4, 9, 16 n1, 2, 3, 4 that we use that formula? I know how to find the nth term (just plug in), I just dont understand how someone would know the right strategy (

How Do I convert Sin into Cosine

Hi!I am reviewing for my calculus placement test, and in the review book, the one question says: 1. If x is an angle between pi/2 and pi, and sin x =3/5, what is cos x? note* - x is actually pthata,

What does this math joke mean

http://www.google.ca/imgres?imgurl=http:…-Pi is an irrational number while i is an imaginary (non-real) number. :)-Pi (the one like this: TT) is an irrational number(not a whole number, decimal, fract