Mathematics - 7 November 2007

5 sinx^2 - 2sinx=cosx^2

I need to see the steps please

2007-11-07 15:52:53 · 3 answers · asked by Nicky 2

This question is in a practice test for a nursing program. The answer they cite is 5000. There are different answers to this problem depending on how you round off, but I haven't been able to get an even 5000...I'd be interested in seeing what everyone else gets as the solution.

2007-11-07 15:37:24 · 7 answers · asked by Mandy D 2

Find a polynomial with the given degree n, lead coefficient 1, the given roots, and no other roots.
n = 3
roots 3, 4, -4

2007-11-07 15:31:41 · 2 answers · asked by Anonymous

is there any way i can solve for x in
log (x-1) = 1/2
w/o calc ?
thanks : )

2007-11-07 15:31:22 · 7 answers · asked by Henry Chan 1

what's inverse of f(x)= x^(5) + 2x^(3) + x -1?

2007-11-07 15:24:05 · 2 answers · asked by remote control 1

and how many points are needed to determine a line? (graph)

2007-11-07 15:23:15 · 6 answers · asked by Anonymous

log base 4 of (4x) - log base 4 of (x/4) = 3



Sorry, it's kind of hard to type without html.

Thank you

2007-11-07 15:20:11 · 4 answers · asked by Shane 2

1)the sum of two numbers is twice their difference. the larger number is 6 more than twice the smaller. Find the 2 numbers.

2007-11-07 15:11:58 · 2 answers · asked by Anonymous

I ask the question, what is the value q of the exponential function q^x such that its derivative with respect to x is equal to itself?

Okay... dont just spout out the mindless answer "oh, q equals Euler's constant, 'e'"... not good enough.

'e' was originally defined as the base of an exponential function ( e^x ) such that it had a slope of 1 at x=0. Thats is what e is based on... its only coincidence that its derivative equals itself throughout its domain. That was proven as a consequence of its definition.

My proposition is, what if ∂/∂x e^x did not equal e^x... regardless of the fact that it has a slope of 1 at x=0.

How would mathematicians have determined (or proven to exist) that one special number, the base to an exponential function, whose derivative was equal to itself?

2007-11-07 15:06:12 · 4 answers · asked by Anonymous

1.6A09E..., 1.BB67A..., 2.3C6EF..., ?

I'm only looking for 5 decimals places.

Good luck.

2007-11-07 15:02:07 · 4 answers · asked by whitesox09 7

Okay well I'll just be honest.. I wasn't paying attention in class. And this book is confusing, as always.

So can someone explain how you get angles measurements from polygons? Like in this picture:http://i18.tinypic.com/814dx8o.gif
And what if it has say.. 17 sides?

How would you find out the measurement of the angles inside, and the angle of X?

And how do you use "180(n - 2)" to get this?
(There was some other equations like this but I forget them).

Please make it simple, thanks.

2007-11-07 14:30:08 · 4 answers · asked by Anonymous

...Thanks...

2007-11-07 14:29:18 · 3 answers · asked by WHAT THE HELL 4

can you simplify this trig problem, and just tell me what you got... i already did it, and i got the Square root of 3, but i think the answer should be neg... any ways, help please...

the identiy used is tan2x = (2tanx) / (1-tan^2 x )

here is the prob..

verify the identity for..
tan 2x when x = Pi/3

so any hep please.. .thanx

2007-11-07 14:27:41 · 5 answers · asked by john doe 2

1.) 3p^2+p-10
2.) 16y^2-6y-1
3.) 6x^2-x-12
4.) 10n^2-n-2

2007-11-07 14:24:35 · 5 answers · asked by Megan 2

find dy/dx

x^2 + xy + y^2 = 7

2007-11-07 14:24:22 · 5 answers · asked by NEEDs MATH HELP!! 1

2007-11-07 14:20:43 · 11 answers · asked by Junior 1

2007-11-07 14:17:48 · 9 answers · asked by Junior 1

2007-11-07 14:16:37 · 3 answers · asked by Junior 1

Please explain.

2007-11-07 14:15:14 · 18 answers · asked by Bobby S 3

prove the identity.

2csc2x = tanx + cotx

2007-11-07 14:13:19 · 2 answers · asked by Anonymous

help what is the solution set?

2007-11-07 14:08:03 · 4 answers · asked by creamy goodness 2

Literal equations? I just learned this today, and it was taught very briefly so I'm getting unsure here and there.

Write the equation in fuction form:
8x + y - 4 = 0

4x + 2y = 14

4y - 4x +4 = 0

I just need help and some explaining. I really appreciate it.

2007-11-07 14:07:45 · 4 answers · asked by Anonymous 1

I know the B stands for base, but there is a reason why its capital,

Does it mean the area of the base?

2007-11-07 14:05:32 · 3 answers · asked by Anonymous

The dome of a new building provides a panoramic view of New York. A tourists stands in the center of the dome and has a 12 degree view through one window. What is the approximate diameter of the dome if the window is 18 inches wide?

2007-11-07 14:03:09 · 4 answers · asked by Sellie 2

During 2001, 61.3% of US households purchased ground coffee and spent an average of $36.16 on ground coffee during the year (annual product preference study) ground coffee expenditures for households purchasing approximately distributed as a normal random variable with a mean of $36.16 and a standard deviation of $10.00. used the standard normal cumulative probability table

a. Find the probability that a household spent less than $25.00.
b. Find the probability that a household spent more than $50.00?
c. What the proportion of the households spent between 30.00 and $40.00?
d. 99% of the households spent less than what amount?

2007-11-07 13:59:29 · 2 answers · asked by anamin_1978_01 1

Find the points on the curve:

x^2 + xy + y^2 = 7

A) where the tangent is parallel to the x axis

B) where the tangent is parallel to the y axis

2007-11-07 13:58:21 · 2 answers · asked by Anonymous

2 Problems, please help!

1) Saratogo and New York are 180 miles apart. A truck traveled from new york toward saratogaat a rate of 65mph.Another truck traveled for saragota to new york at the rate of 55mph. How many miles did each travel before they met?

2) Two planes started at the same time from the same airport and flew in opposite drections. One flew 60 mph faster than the other. In 5 hours, they were 5,300miles apart. Find the rate of each plane.

I need the equation 2.
Thanks so much!

2007-11-07 13:56:09 · 5 answers · asked by Anonymous

Mark works for a caterer in Berrygood on the weekends. He uses a 12 inch round platter of different chesses he assembled. What is the surface area of the section of the platter if it is less than half of the whole platter and it is 144 degrees? Answer if you dare

would it be 15.07 or 90.43, or 45.22, or 180.86, or none of the above?
limited amount of time to answer! So hurry!

2007-11-07 13:54:36 · 3 answers · asked by Sellie 2

a^n is negative when blank because blank
a^n is positive when blank becasue blank

thanks for help

2007-11-07 13:54:14 · 8 answers · asked by redbone001 1

You drive 90m along a hwy and then take a 5 mile run. Your driving rate is 9 times that of your running rate. (there is a graph with points aprox.(1.7, 8) (3,5) (5,3) (7,2) (11,1.5)

The function supplied is:
f(x)= 90/9x + 5/x = 15/x

the question askes
Descrive your running rate if you have no more than a total of 5hrs of running and driving. Use a rational inequality to solve the problem.

If I could get a setup I believe I could solve this.

2007-11-07 13:47:41 · 2 answers · asked by Happy Killa Pants 2