Mathematics - 22 November 2007

What is f(3) if f(x) = -5x3 + 6x2 - x - 4?
a. -74
b. -88
c. 74
d. 182

2007-11-22 05:51:20 · 3 answers · asked by surf22n30skate 1

What is the sum of all of the digits of all the whole numbers from 1 to 1,000,000 (inclusive?
Thanks for any answers in advance. :)

2007-11-22 05:47:14 · 11 answers · asked by cf_al_bs 2

i think its called a proper fraction ro something, how would you solve that...thanks

2007-11-22 05:46:58 · 7 answers · asked by Anonymous

2007-11-22 05:19:38 · 2 answers · asked by USK 1

CAN PI EQUAL 2?

2007-11-22 04:53:19 · 21 answers · asked by Anonymous

convert 9 1/2 into a decimal number

2007-11-22 04:29:22 · 13 answers · asked by Anonymous

How did archimedes discover pi? we know that pi is:3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510 58209 74944 59230 78164 06286 20899 86280 34825 34211 70679 82148 08651 32823 06647 09384 46095 50582 23172 53594 08128 48111 74502 84102 70193 85211 05559 64462 29489 54930 38196 44288 10975 66593 34461 28475 64823 37867 83165 27120 19091 45648 56692 34603 48610 45432 66482 13393 60726 02491 41273 72458 70066 06315 58817 48815 20920 96282 92540 91715 36436 78925 90360 01133 05305 48820 46652 13841 46951 94151 16094 33057 27036 57595 91953........but how did he find it!!!!!??????

2007-11-22 04:23:15 · 11 answers · asked by Anonymous

Caulculate the number of sides for a polygon whose interior angles add up to 1980

2007-11-22 04:13:05 · 5 answers · asked by Anonymous

Statement: The function f(x) = x*x (x squared) is uniformly continuous on two of the following three sets: (0,1), Z, R. Z is the set of all integers and R is the set of all real numbers.

My answer: True

2007-11-22 04:12:56 · 4 answers · asked by Gabe 3

By using transposition, make V the subject of this formula:

X = R ( E-V ) / V

The whole formula on the right hand side R(E-V) is over the V, thankyou.

2007-11-22 04:09:36 · 4 answers · asked by riocia 1

I could use some help using the subitution method to solve this problem.
4x+5y+-1=-12+2x
x-3y+2=-3-x

2007-11-22 03:45:26 · 8 answers · asked by Adventurebound75 1

Tom Hanks, the navigator of a ship at sea, spots two lighthouses that he knows to be 2 miles apart along a straight shoreline. He determines that the angles formed between two line-of-sight observations of the lighthouse and the line from the ship directly to shore are 12º and 30º.
(a) How far is the ship from lighthouse A?
(b) How far is the ship from lighthouse B?
(c) How far is the ship from shore?

I'll try to draw a little illustration... \ is 12º, | is ship from shore straight away, and / is 30º
A -------2miles--------B
\| /
\| /
\| /
\| /
\ | /
\ | /
\12º | 30º/
\ BOAT /

This answer was correct, but it doesn't logically make sense to me.
sin 42º = sin 60º
2 miles x
x = 2.588 miles (a)

then I found b = 2.923 miles
and c = 2.534 miles
The #'s that I'm using don't logically match up with the picture though...

2007-11-22 03:45:26 · 1 answers · asked by Ti-Mon 2

Prove that 3|n(2n²+1)

Prove that 3 is divider of n(2n²+1)

2007-11-22 03:34:36 · 4 answers · asked by Anonymous

Let f: (a,b) --> R (the set of real numbers) be a differentiable function at x belongs to (a,b). Prove that the limit as h goes to zero of [f(x+h)-f(x-h)]/h exists and is equal to f ' (x). Is the converse statement true?

2007-11-22 03:10:28 · 3 answers · asked by Gabe 3

please show me how it would be done in an exam. thanks alot

2007-11-22 03:01:33 · 4 answers · asked by mhthekidd 2

I know that the determinant of ((lambda)(I)-(A) has to be zero, but what about det (A)? Does it have to be zero as well?

2007-11-22 03:00:39 · 3 answers · asked by invincibleian 1

bonus question how many ml are in 5cm3

2007-11-22 03:00:28 · 3 answers · asked by aj mc cake 1

2007-11-22 02:28:35 · 6 answers · asked by RogerDodger 1

1+1=?

2007-11-22 02:09:27 · 41 answers · asked by Andrew S 2

A mountain rescue team has to send a rescue line across to a climber stranded on a rock face. They cannot reach the base of the face because of obstacles but observe that the angle of elevation of the stranded climber is 26.6degrees and if they move 10metres nearer, the angle of elevation becomes 30.3degrees. How high up the rock face is the climber and how long must the rescue line be in order to reach her?

How do I work this out? I've tried sketching it but I just can't figure out what it should look like. Please help me out.

2007-11-22 01:56:16 · 2 answers · asked by ffxiaddict 1

2007-11-22 01:16:46 · 11 answers · asked by Anonymous

Maybe you could explain me that. Step by step:)

2007-11-22 00:56:14 · 8 answers · asked by Anonymous

solve the equation:
sin(cosx)=cos(sinx)

2007-11-22 00:38:55 · 6 answers · asked by murzilka 1

please convert the following (with solution)

5 ft to cm.
365.76 cm to ft
6 gallons to L

.feel free to use a calculator..
.as long as you show how/show the formula..

2007-11-22 00:36:32 · 8 answers · asked by Anon 1

The problem is the number four is outside of the sqrt symbol I dont know what do call it but the four is in the same place a 3 would be if I was trying to figure out the cubed root. Then 81x^4 is on the inside of the sqrt symbol. I hope that made it a little easier to understand

2007-11-22 00:20:18 · 5 answers · asked by Nicole D 1

2007-11-22 00:02:41 · 12 answers · asked by Nicole D 1