Mathematics - 28 August 2007

2007-08-28 09:43:11 · 4 answers · asked by dj 1

3X^2 +27X + 54

(3X+ ?) (X+?)

I cannot figure this out, what goes where the ? marks are
thanks if you can help. i am taking a college algebra clep test on friday and am studying.

2007-08-28 09:35:42 · 5 answers · asked by Boo Radley 4

2007-08-28 09:31:01 · 11 answers · asked by skippl80 1

x = 8 cos(theta) , y = 9 sin (theta)

(a) Eliminate the parameter to find a Cartesian equation of the curve.

2007-08-28 09:26:40 · 2 answers · asked by Anonymous

To expand on my earlier question about finding unknown angles, I had one more question. I have a triangle similar to my last question. One length is known, with the opposite angle unknown. Another angle is known, with an unknown opposite side. One side and its opposite angle are both unknown. I need to find the unknown angle whose opposite side is also unknown, given the known variables. How can I find this angle?

2007-08-28 09:25:28 · 1 answers · asked by Confused about life 2

We've never done any sort of problem like this, and it's the beginning of the year and I'm getting extremly confused...

1) Look up the Taylor (or Maclaurin) series for the following functions:

e^x

cos x

sin x

This "series" is an infinitely long polynomial that ("strangely") approximates a function that is not a polynomial. For now, you can just copy them down. Try graphing the first 4 or 5 terms of the polynomial if you want to see how they behave.


So now I've tried looking up a bunch of stuff, but I keep getting extremely confused!!

2007-08-28 09:20:37 · 5 answers · asked by Dougie Fresh 2

thanks!!!!

2007-08-28 09:19:45 · 2 answers · asked by JulyFire 5

TEACHER DIDN'T TEACH IT AND I HAVE NO CLUE HOW TO DO THESE PROBLEMS.....1.A BUS TRAVELED FOR 2H @ R MI/H, THEN DECREASED THE SPEED BY 10 MI/H AND TRAVELED FOR 1 MORE HOUR. HOW FAR DID THE BUST GO?

2.AN ANGLE HAS MEASURE X TO THE 0 POWER. FIND THE AVERAGE OF THE MEASURES OF A COMPLEMENT AND A SUPPLEMENT OF THE ANGLE.

US V=1/3BH
3. A PYRAMID HAS A RECTANGULAR BASE. FIND THE VOLUME IF THE LENGH AND WIDTH OF THE BASE AND THE HEIGHT ARE 3 CONSECUTIVE ODD INTEGERS AND X IS THE LARGEST INTEGER.

4. JORGE BOUGHT S 40 CENT STAMPS AND TREE TIMES AS MAY 25 CENT STAMPS. HOW MANY DOLLARS DID HE SPEND?

5. THE LENGTH OF A RECTANGULAR FIELD IS 45FT GREATER THAN ITS WIDTH, W FT. HOW MUCH FENCING IS NEEDED TO ENCLOSE THE FIELD AND DIVIDE IT INTO PARTS?

2007-08-28 09:17:06 · 2 answers · asked by beachgirl0309 2

What percentage of 306,000 equals 8,200? and how do you do the math to get that number? Thanks

2007-08-28 09:16:38 · 26 answers · asked by Anonymous

how do you solve bx - cx = -c solving for x and then finding the restrictions

2007-08-28 09:14:51 · 5 answers · asked by Anonymous

2007-08-28 09:11:48 · 27 answers · asked by Anonymous

-5 ( 6X-5) + 9X^2 +3 =3
9X^2 - 30X +25 = 0
first i set it equal to 0
then factor
here is where i get stuck
(9X + ?) (X +?) = 0
where the question marks are, I need to put numbers that i thought multiplied together and added together were supposed to equal -30 and 25.
thanks if you can help

2007-08-28 09:09:32 · 3 answers · asked by Boo Radley 4

I need help finding the y-intercepts, and the vertexs.

1) find the vertex and the y-intercept.
y=2x²+4x+2

2) find the vertex and the y-intercept.
y=-3x²+12x-9

How do you find it? Show/work explain please.
3)
For the 1) I got 2(x²+2x+1) is y=2(x+1)²+1 for the vertex. Which is (1,-1) but its wrong why?

2007-08-28 09:02:21 · 2 answers · asked by Anonymous

Really the domain and range for this function, whether it is even or odd and what the graph looks like. Also what is the limit as the function approaches infinity.

2007-08-28 09:01:09 · 1 answers · asked by Lauren S 1

If a ball is thrown into the air with a velocity of 40 ft/s. it's height in feet after t seconds is given by y=40t-16t^2.

a) find the average velocity for the time period beginning when t=2 and lasting:

i) 0.5 s
ii) 0.05 s.
iii) 0.1 s.
iv) 0.01 s.

2007-08-28 08:59:57 · 1 answers · asked by Caramel 2

what does the sign < mean

2007-08-28 08:58:17 · 5 answers · asked by Anonymous

I'm a tad stuck with the following problem

lim theta^2 / sin(theta)

as theta -> 0

any ideas?

2007-08-28 08:57:07 · 2 answers · asked by AppleCard! 2

2007-08-28 08:47:44 · 7 answers · asked by theartisttwin 5

Its a file that my professor sent to us so i cant copy and paste on here but i can send through email. Normally i would not ask for help with any school subject, but math is a very weak point for me always has been and tutoring isnt working im failing math.. Someone please help me with my homework. Theirs not very many problems and shouldnt take very long especially if you know how to do them.

2007-08-28 08:45:41 · 1 answers · asked by Anonymous

log a=0.7380

log g=0.6990

log c=3.8983

2007-08-28 08:39:56 · 2 answers · asked by Anonymous

ok so the problem is x^2-4x-5 (factor the trinomial)
this is my work:
i multiplied -5 by 1 and got -5 and then:
(x^2+1x)-(5x-5)
x(x+1)-5(x-1)
(x-5) + ?
my book says the answer is (x-5)(x+1). my question is why did they choose the x+1 over the x-1???

2007-08-28 08:37:37 · 30 answers · asked by Anonymous

I am having troubles solving this 2 question. Can anyone show me the solution step by step please?

1) Given that y=ax^(b)+10 and that y=26 when x=2 and y=64 when x=3. Find the values of a and b.
2) Solve 4^(x+1)=2-7(2^x)

2007-08-28 08:17:59 · 2 answers · asked by arcaniz 2

8x-6y=10
33x-15y=12

2007-08-28 08:13:27 · 5 answers · asked by Anonymous

Can I reply to others if I think I have the answer?

2007-08-28 08:08:31 · 8 answers · asked by Anonymous

Write the equation of a circle that is tangent to the x-axis at (4,0) and has the y-intercepts of -2 and -8.

2007-08-28 07:57:01 · 5 answers · asked by Rachael A 2

The statement is
If a ball is thrown in the air with a velocity 42 ft/s, its height in feet t seconds later is given by y = 42t - 16t2

What to find
Find the average velocity for the time period beginning when t = 2 and lasting 0.5 second

I am not sure how to set this up can someone please show me?

2007-08-28 07:53:30 · 6 answers · asked by Smokey. 6

Two planes leave chicago-one traveling due east and the other due west. The first travels 100 mph faster than the second. How long will it be untill they are 2000 miles apart? Please show the steps to get this.

2007-08-28 07:42:14 · 3 answers · asked by shawna 2

2007-08-28 07:40:17 · 8 answers · asked by Anonymous

what makes a tesseract, tesseract? can you name another hyperchoron(?) other than tesseract? can i build it with pieces of paper? charlie epps just introduced them to me...

2007-08-28 07:37:34 · 4 answers · asked by Mugen is Strong 7

2007-08-28 07:36:43 · 4 answers · asked by diana 1