Science & Mathematics - 6 September 2007

Of all the numbers below, which of these should I eliminate to get a sum of $2,478,617.60. Is there an easy way to do this?

401,508.00
400,836.00
160,142.40
238,634.64
159,089.76
371,209.44
203,281.36
242,263.20
301,672.80
720,933.18
311,550.78
53,029.92

2007-09-06 07:31:39 · 4 answers · asked by Anonymous in Mathematics

truly your help means a lot to me...im very eager to learn everything,to know every single things about civil engineering....i wanna know everything in building a structure. Good day always my helpful friends!!!!!

2007-09-06 07:30:26 · 2 answers · asked by sagitty10 1 in Engineering

Please find all real roots of these set of equations:

http://m1.freeshare.us/173fs730110.gif

2007-09-06 07:30:14 · 3 answers · asked by Amir 1 in Mathematics

2007-09-06 07:28:10 · 2 answers · asked by John D 2 in Chemistry

Ok i have to do a sheet for trig and dont know what to do wit this problem:

The height (Y) of maria's rocket can be represented by Y= -16x^2+70x+37 where x represents the time in sesconds since the rocket was launched, and the height is expressed in feet. What was teh maximum height of maria's rocket to the nearest tenth of a foot

2007-09-06 07:26:21 · 2 answers · asked by Allie B. 2 in Mathematics

i think its the dna but i dont kno for sure

2007-09-06 07:26:17 · 6 answers · asked by Andrew 2 in Biology

partscoretotalsubmissions1--11/3An observer, whose eyes are 1.80 m above the ground, is standing 33.0 m away from a tree. The ground is level, and the tree is growing perpendicular to it. The observer's line of sight with the treetop makes an angle of 17.0° above the horizontal. How tall is the tree?

2007-09-06 07:24:30 · 1 answers · asked by Marianna E 1 in Physics

2007-09-06 07:22:44 · 2 answers · asked by Bring back Democracy 3 in Engineering

lets say i had a problem like ...

(3x+6)/(12x+1) = 5(2x+3)/ (x^2+6x+5)

how would i solve this, cross multiply ?

2007-09-06 07:22:37 · 4 answers · asked by dreamz 4 in Mathematics

What force held it together until the explosion?

2007-09-06 07:21:40 · 22 answers · asked by Anonymous in Astronomy & Space

2007-09-06 07:20:22 · 6 answers · asked by Robnyc27 1 in Engineering

2007-09-06 07:20:02 · 5 answers · asked by rayg 1 in Chemistry

If a $300 typewrite loses 10% of its value each year, what is its value after 3 years?

2007-09-06 07:17:16 · 8 answers · asked by Anonymous in Mathematics

i know what it is but how do i explain it?

2007-09-06 07:15:25 · 7 answers · asked by Anonymous in Physics

space,, is there carbon dioxcide in space?
if we could plant a tree, a potted tree., with an irrigation system to to water it, and a grow light that runs on a battery pack or something. to sustain the tree, while we are not there .making oxigen. would it make that planet hospitable for humans?
I am just wondering?. please no long drawn out answers.

2007-09-06 07:13:56 · 3 answers · asked by Anonymous in Earth Sciences & Geology

2007-09-06 07:13:48 · 9 answers · asked by phoenixxgrey 3 in Zoology

lets say u have a problem like...

(3x+6)/2 = 5(2x+3)/6

what is the first thing i would do to solve this?

i think i would distribute the 5 to the (2x+3) so 10x+15 it will be.
then i must multiply both sides by the denomenators?
do i need to find a common denominator or just multiply each side by the other denominator? then would multiplying by the denominators cancel the bottom then i need to multipy it by the numerators?im confused.

2007-09-06 07:10:53 · 9 answers · asked by dreamz 4 in Mathematics

It would be a great help if you could help me!! Thanks.

2007-09-06 07:10:50 · 8 answers · asked by Anonymous in Physics

Decathlon Champion. For 1989 and 1990 Dave Johnson had the highest decathlon score in the world. When Johnson reached a speed of 32 ft/sec on the pole vault runway, his height above the ground t seconds after leaving the ground was given by h = -16t^2 + 32t. (The elasticity of the pole converts the horizontal speed into vertical speed.) Find the value of t for which his height was 12 ft.

2007-09-06 07:09:00 · 4 answers · asked by baby166_99 2 in Mathematics

A jet is diving vertically downward at 1390 km/h. If the pilot can stand a maximum acceleration of 5g (i.e., five times the acceleration of gravity on Earth's surface) before losing consciousness, at what height must the plane start a quarter turn to pull out of the dive? Assume the speed remains constant.

2007-09-06 07:07:30 · 2 answers · asked by dsgdh 2 in Physics

the distance between A and B is 100 km .
B is east of A.
2 vehicles start travelling at the same time,one from A and the other from B.
Both go east.
they meet after 10 hours.
the vehicle that started from B goes 4 km in (t+2 minutes) time when the vehicle started at A goes 4 km in t time.
what are the speeds of the 2 vehicles?


I got this:

4=(x+10)*(4/x+2/60)
the answer should be
4=(x+10)*(4/x-2/60)

this is the equation for B so why do I subtruct 2 minutes and not add them?

2007-09-06 07:06:56 · 3 answers · asked by Anonymous in Mathematics

How do you use it throughout the day? How does it come to you, clairvoyance? clairsentience? etc.

2007-09-06 07:05:25 · 13 answers · asked by Anonymous in Paranormal Phenomena

2X^3-4X^2-30X




2X^4-6X^2-8

2007-09-06 07:05:13 · 7 answers · asked by gladdo19 1 in Mathematics

2007-09-06 07:04:57 · 3 answers · asked by whisper2ya 2 in Medicine

to the patient during this time?

2007-09-06 07:03:16 · 7 answers · asked by whisper2ya 2 in Medicine

If m1, m2 are slopes of two perpendicular lines, We know from cartesian geometry that their product m1.m2 = -1.
Even X and Y axes are perpendicular to each other.
why is it that the product of their slopes not equal to -1 ?

2007-09-06 07:02:41 · 7 answers · asked by sai kumar 1 in Mathematics

2007-09-06 07:01:58 · 8 answers · asked by Anonymous in Mathematics

My son is 14 months and didn't have his 12 months shots because of a problem with medicaid. He is now off of medicaid because my husband's pay went up so we are just waiting to add him to the insurance in Nov. Well I know good and well he can not wait until Nov. to get his 12 month shots.

My problem is, are the shots at the health department the same as at the doctor's office? From what my pedi's office told me when he had his first set is that they are different. Even medicaid patients get different shots (same type but different brand) compared to the ones with private insurance at the doctor's office.

If I have them done at the pedi's office then I will be billed around $800 for the visit so paying a payment of $50 a month on top of my copay when he needs to go in wouldn't be possible with our budget. I'm lost as to what to do. I want my son to get the best shots possible and with the thought of autism caused by shots, that worries me. I also want him to have a check up.

2007-09-06 06:59:45 · 6 answers · asked by mommy2carston 2 in Medicine

2007-09-06 06:58:49 · 6 answers · asked by rideinfree 1 in Mathematics

For what value of the constant c is the function f continuous on (-infinant , infinant )?
f(x)={cx^2-3x if x < 1
___{x^3-cx if x >=1

I dont really understand how to do this can someone please explain it to me.

2007-09-06 06:57:29 · 2 answers · asked by Smokey. 6 in Mathematics