Mathematics - 17 October 2007

A rising number is a number in which each digit is greater than the digit to it's immediate left. These include 123 and 278... how many 3- digit rising numbers are there?

2007-10-17 13:15:30 · 3 answers · asked by Lala 3

8x-y=22
x+4y=11

what is the solution of the system?

( ? , ? )

2007-10-17 13:13:49 · 7 answers · asked by SOSme 1

2007-10-17 13:10:09 · 3 answers · asked by leer 2

Describe the locus of points that are 12 cm from point B.

a segment 24 cm long

a circle with a radius of 12 cm

a sphere with a radius of 12 cm

a sphere with a radius of 24 cm

2007-10-17 12:58:03 · 3 answers · asked by Ryan S 1

we need to draw one for a class?

2007-10-17 12:54:26 · 1 answers · asked by Anonymous

2007-10-17 12:52:04 · 2 answers · asked by Anonymous

using the data in the table below and assuming the growth is exponential, when would the populations of Austin and Columbus be equal?

Austin: population: 1990=465,622 2000=656,562
Columbus: population: 1990= 632,910 2000=711,265

2007-10-17 12:46:59 · 1 answers · asked by nathan 2

i already did this -b+5-5=-16-5
-b =-21
but when i check it i get 21+5=26 because a negative plus anegative equals a positive

2007-10-17 12:44:07 · 8 answers · asked by coolgeorgerod 2

Several Symols sat silently and snacked on sugary sweets.
Well, and tea, too. But that would have ruined the alliteration.

Anyway, after tea, they decided to burrow out a larger burrow. In the first hour, they burrowed out 427 cubic inches of dirt. In the next hour, they burrowed out 256 cubic inches of dirt. In the third hour, they burrowed out 312 cubic inches of dirt. In the fourth hour, they burrowed out 546 cubic inches of dirt. In the fifth hour, they burrowed out 656 cubic inches of dirt. And in the sixth hour, they burrowed out 823 cubic inches of dirt. They continued for one more hour after that.

How many cubic inches, total, did they burrow in those seven hours?

2007-10-17 12:43:58 · 4 answers · asked by pegtalay 1

1) 4 goals in 10 attemps

2) 15 dimes out of 24 coins

3) 10 inches to 3 feet

4) 5 feet to 5 yards

2007-10-17 12:41:46 · 1 answers · asked by haaaaahaaaa! 1

Okay, here are the choices:

1) y= 2x + 4
2) y= x^2 - 4x + 3
3) x = 3y - 2
4) x= y^2 +2y - 3

Which is NOT a function?

Okay, so
it's not number one b/c no. 1 is a function. I put the equation in my calc. and on the graph, i got a line. so i did the vertical line test and it only passes it once- so it IS a function.

not no. 2 b/c tht is a function as well. same thing- put in calc. got a parabola- vert. line test- only pass once- IT IS A FUNCT.

not no. 3 because after i solved for Y. put in calc--same thing- vert line test- passed once- so it is a function...

no 4....i do not get how to solve for Y.....i did: ADD 3 on both sides...got x +3 = y^2 + 2y...then divided by 2, got x + 3 = y^2...square root that??????? can someone help me with tht IF i did it so far....

help....again, i am supposed to tell which is not a FUNCTION and WHY?

thanks !!!!!!!!! :)
xoxo
xoxo

2007-10-17 12:37:54 · 5 answers · asked by Anonymous

A block of ice has a volume of 8 cubic metres. After 3 quarter of ice has melted, what amount in mm (milimetres) remains?

2007-10-17 12:33:11 · 7 answers · asked by Anonymous

A Super Lemon currently weighs 100 kg and is increasing by 4 kg per day. The price for Super Lemons is currently 8.90 per kilogram but is decreasing at $0.30 per kg per day. The cost to grow the lemon is $0.80 per day. Determine how many days from now the lemon should be sold to maximize profit and what the maximum profit will be.

Help me solve this please? I am so lost.

2007-10-17 12:30:37 · 1 answers · asked by tangerine_crunge 2

using a right triangle

b=4 opposite
c=6 hypo

find a = adj.
alpha and beta

please help

2007-10-17 12:23:08 · 7 answers · asked by Anonymous

I'm trying to figure out the pattern to find out what the next number would be. They are in cubic inches (if that helps; I'm not sure if that's needed or not to figure the pattern out).

Anyway, the numbers are:

427, 256, 312, 546, 656, 823, (next number here)

Thanks in advance to anyone that can help me out!! :D

2007-10-17 12:22:17 · 2 answers · asked by Punky Brewster 4

The logistics map is the function f:[0,1] -> R, defined by f(x)=ax(1-x). Thus, x of n+1 = f(x of n) {Note, I say x of n+1 to represent x with the subscript n+1} and (x of n) = (x of 1, f(x of 1), f(f(x of 1)), ...). We write f^2(x) for f(f(x)), and so on.

Check that f has a global maximum of a/4 at x=1/2. Deduce that f maps [0,1] back into [0,1] if 0 <= x <= 4

From the above, we restrict ourselves to seeds, x of 1, from (0,1) and a epsilon (0,4). In fact the zone of a values in (0,1) is also not so interesting - the population is doomed to extinction.

Im having trouble with the deuce part. Thanks

2007-10-17 12:19:15 · 1 answers · asked by Jeff K 2

What quadrilateral do they make and how can you find out?

2007-10-17 12:16:47 · 3 answers · asked by greg.cramer33 1

for algebra we have to remember 1- 25's second power such as

1/\2, 18/\2, 15,/\ ect...

but it cant be somthing in order because durning the test my teacher does it randomly

2007-10-17 12:15:25 · 8 answers · asked by Tina 2

If a graph has a vertical asymptote and the limit of the function is infinity or negative infinity on BOTH SIDES of the asymptote is there a way to know this just by the actual function. I know there's a way to differentiate this kind of graph from a graph that has one side going to infinity and another to negative infinity, I just don't know how. Thank you.

2007-10-17 12:11:38 · 1 answers · asked by dumbleeedore 1

my teacher gave us about 6 problems N i dont know how to work them. can you show me step-by-step how ya do them? you dont have to do all of the problems because i want to do the rest so that i can learn from it...


1.) (-8x)2 (-x3) ..-->> the 2 and 3 are exponents

2.) -3/7(-w2)(7w2)...-->> the 2's are exponents

3.) 4w2 -w(2w-3)..-->> the 2 in (4w"2") is an exponent

thanks for the help!

2007-10-17 12:09:43 · 1 answers · asked by Anonymous

simplify
a+4 over 16a + 3a+4 over 4a squared

2007-10-17 12:08:04 · 5 answers · asked by ry ry 3

2007-10-17 12:03:11 · 5 answers · asked by Anonymous

Well, and tea, too. But that would have ruined the alliteration.

Anyway, after tea, they decided to burrow out a larger burrow. In the first hour, they burrowed out 427 cubic inches of dirt. In the next hour, they burrowed out 256 cubic inches of dirt. In the third hour, they burrowed out 312 cubic inches of dirt. In the fourth hour, they burrowed out 546 cubic inches of dirt. In the fifth hour, they burrowed out 656 cubic inches of dirt. And in the sixth hour, they burrowed out 823 cubic inches of dirt. They continued for one more hour after that.

How many cubic inches, total, did they burrow in those seven hours?

2007-10-17 12:01:44 · 6 answers · asked by Carol S 1

Using the correct area of the football field in square inches and using 15 square inches as the area of a $100 bill, how many $100 bills would it take to cover a football field to the nearest whole bill?

2007-10-17 11:55:44 · 2 answers · asked by Anonymous

A $100 bill has an area of about 15 square inches. A football field is 100 yards by 53 1/3 yards. What is the area of the football field in square inches?

2007-10-17 11:55:07 · 9 answers · asked by Anonymous

please explain like which number you subtract or add both sides from and why??? please im confused.also in 3x-10=2x+2

i understand how to do it and all but i just need to now which number to use when i subtract/add both sides from....

2007-10-17 11:53:45 · 7 answers · asked by Soprano 2

Can someone show me the steps to solving this? Thank you!

8 cos^2 (theta) - 3 = 1

2007-10-17 11:42:15 · 11 answers · asked by Anonymous

Some rabbits decided to burrow out a larger burrow. In the first hour, they burrowed out 427 cubic inches of dirt. In the next hour, they burrowed out 256 cubic inches of dirt. In the third hour, they burrowed out 312 cubic inches of dirt. In the fourth hour, they burrowed out 546 cubic inches of dirt. In the fifth hour, they burrowed out 656 cubic inches of dirt. And in the sixth hour, they burrowed out 823 cubic inches of dirt.

How many cubic inches, total, did they burrow in those seven hours? how do I find the answer

2007-10-17 11:41:21 · 4 answers · asked by clawedstar 1

2007-10-17 11:36:37 · 1 answers · asked by bristo75 1

Two or more circles with congruent radii are called

concentric circles

similar circles

circumscribed circles

congruent circles

2007-10-17 11:31:44 · 1 answers · asked by Cakes L 1