Mathematics - 28 November 2007

{x - 5y = 3
{9x - 6y = 51

a. (6, 3)
b. (-7, 3)
c. (7, 2)
d. no solution

2007-11-28 23:57:43 · 6 answers · asked by . 1

True OR false?
Lim k-->∞ [1/(k(k+2))] < lim k-->∞[5/(k^2)]?

This can be rewritten as:
Lim k-->∞ [1/(k^2+2k))] < lim k-->∞[5/(k^2)]?

2007-11-28 23:30:03 · 12 answers · asked by RogerDodger 1

I mapped it out to be 8/16 but this must be wrong. Is it?

2007-11-28 22:43:12 · 11 answers · asked by conda 6

2007-11-28 22:39:42 · 3 answers · asked by Anonymous

A. Between what two consecutive integers do each of the following numbers like?

1. square root of 21
2. square root of 50
3. square root of 70
4. square root of 98
5. square root of 145
6. square root of 250
7. square root of 310
8. square root of 450
9. square root of 555
10. square root of 650
11. cube root of 16
12. cube root of 60
13. cube root of 200
14. fifth root of 150
15. fourth root of 175



B. Find a one-decimal place approximation for each of the following expressions:

1. square root of 10
2. square root of 18
3. square root of 30
4. square root of 37
5. square root of 50
6. cube root of 8
7. fifth root of 26
8. fourth root of 45
9. square root of 65
10. cube root of 99
11. negative square root of 20
12. negative cube of 35
13. negative fourth root of 200
14. cube root of 15
15. cube root of 30




Pls. help me pls. i need it now pls. pls. i'm begging you pls. pls. pls. very pls.

2007-11-28 21:13:50 · 4 answers · asked by Anonymous

OK, so a person jumps off from a 10-meter springboard...h in meters and t in seconds, after the diver leaves the board her height above the water is given by
-4.9t^2+8t+10

F(x)=-4.9(t+.8)^2+13.1....vertex form

BUT

How long does it take the diver to reach the water

At what time is the diver EXACTLY 11m above the water

For how long is the diver 11m above the water

PLEASE try to use a graphing calculator and show the strokes because I don't know how to do these...and include ur answers so I can double check...

THANKS!!!

2007-11-28 20:30:15 · 1 answers · asked by A A 1

Establish the Bernoulli inequality:

If l+a>0, then (l+a)^n is greater or equal than 1+na for all positive integers n.

2007-11-28 20:21:40 · 2 answers · asked by garlin104300 1

What is the probability that all the heads occur at the start of the sequence?

2007-11-28 20:16:38 · 4 answers · asked by David 2

The 120 seats on an Alaska Airlines flight were completely booked, with each of the 120 passengers having different assigned seats. The passengers entered the plane one-by-one. Unfortunately, the first passenger, Joe Isclumsy, couldn't read his boarding pass because he spilled coffee on it and sat in a (uniformly) random seat. Each subsequent passenger sat in their assigned seat if it was available when they entered and sat in a (uniformly) random empty seat otherwise. What is the probability that the last passenger sat in their assigned seat?

2007-11-28 20:14:48 · 1 answers · asked by David 2

Why does r = 1/ [sin(theta) - cos(theta)] become y - x = 1

2007-11-28 19:56:10 · 2 answers · asked by jeff h 1

I don't know how to find the zeroes of complex polynomials like this:

x^4 - 2x^3 - 2x^2 - 2x - 3

Could you help show me how? Thanks.

2007-11-28 19:45:43 · 6 answers · asked by Anonymous

4- l x-4 l Closed Interval [1,6]

Find the min and max

2007-11-28 19:37:34 · 4 answers · asked by Adam d 1

2007-11-28 19:29:50 · 5 answers · asked by Answer Seeker 1

What is the remainder when A is divided by 9?

2007-11-28 19:26:31 · 6 answers · asked by Answer Seeker 1

Still working on this darn paper....

I was given these numbers and ask to find the nth term.

6 8 12 18 26 36 48 62

Somehow I came up with this function:

x^2 - x + 6

She marked it as correct but now that I am trying to put the entire paper together I just can't seem to get it to workout.
Is this correct or have I totally screwed up?

Thanks!

2007-11-28 19:04:47 · 6 answers · asked by Confused 1 1

Can anyone help me solve this problem? I am new at this and I am a little confused.

2007-11-28 19:01:41 · 8 answers · asked by Syl 2

Consider x = h(y,z) as a parametrized surface Φ(y,z) in the natural way. Write the equation of the tangent plane to the surface at the point (2, 2, 0) [with the coefficient of x being 1] given that
∂h/∂y(2,0) = -5 and ∂h/∂z (2,0) = 0.


_____________ = 0

Any help would be great! Answer and explanation of the steps to the answer. Thanks

2007-11-28 18:54:33 · 1 answers · asked by dizayfashizay 2

Find an equation of the tangent plane to the parametric surface
x = 4rcosθ, y = -5rsinθ, z = r, at the point (4sqrt(2), -5sqrt(2), 2 when r = 2, θ = pi/2.

z = __________

Note: Your answer should be an expression of x and y; e.g. "3x - 4y"

Stuck... hope you can show me the answer and the steps how you got there.

Thanks

2007-11-28 18:39:32 · 1 answers · asked by dizayfashizay 2

Its a project for my class but i am having a tough time...

Please help!!!


What I am asking is to reword this phrase by using other words that would convey the same meaning...

The phrase is this>>>> "The Real Thing"

HELPHELPHELPHELP

2007-11-28 18:39:31 · 4 answers · asked by a100 1

5x+3y=12
3y=-5x+3

2007-11-28 18:18:58 · 6 answers · asked by joe78521 2

x^3+x^2+2x+6...

I am tired and yet I am still lost with this problem... I have tried to work it 3 different ways and still can not figure it out??? can someone help me please ......

2007-11-28 17:45:29 · 5 answers · asked by Anonymous

1 final question... and I am going to sleep.... factoring issues ... I am locked after this one section.... of the problem...

x^4+2x^3-3x-6 - problem

This is what I have so far and then I for some reason get stuck...

x(x^3+2x^3-3-6) (step 1)
x(X^3+2x^2-9) (step 2) - now I am stuck.... blaaaah!!!!

what am I missing because I surely can't figure it out...

2007-11-28 17:26:16 · 4 answers · asked by aunt24 1

2007-11-28 17:22:17 · 10 answers · asked by Anonymous

Given the following information:

Selling price per unit = $10
Variable Cost per unit = $7
Plant capacity = 125,000 units
Sales demand = 80,000 units
Profit = $90,000

TOTAL FIXED COSTS is equal to:
_______?

It is multiple choice, but I'd like to leave out the answers , to make sure the provided answers are arrived at, without simply choosing an random provided answer, and trying to "make it fit".
Please show your rational for your answer.

THANK YOU!

2007-11-28 17:10:26 · 3 answers · asked by mikeburman11 1

Let a=log(base 12)2 Show that log(base 6)16=4a/(1-a)

Anyone???

2007-11-28 17:07:26 · 5 answers · asked by fanofdegrassi 2

2007-11-28 17:03:27 · 8 answers · asked by Anonymous

if i worked 23 hrs and make 7 50 and hr,how much would my check be.?? sorry im horrable at math. i keep coming up with 150 or somewher around that range,

2007-11-28 16:58:46 · 9 answers · asked by Meggan m 1

x = ????

2007-11-28 16:56:56 · 2 answers · asked by J S 1

2007-11-28 16:51:43 · 16 answers · asked by Mango Muncher 6

2007-11-28 16:49:29 · 9 answers · asked by Anonymous