Mathematics - 4 September 2007

2007-09-04 13:13:06 · 5 answers · asked by Anonymous

1.001001001...

Is it rational or irrational and why?

2007-09-04 13:11:51 · 8 answers · asked by Anonymous

2007-09-04 13:04:10 · 2 answers · asked by charlie_armstrong6 1

Sums and differences of cubes??

Factor Completly:

1) 3z^5 - 3z^2

2) a^9 + b^12 c^15

2007-09-04 12:58:49 · 1 answers · asked by Aimee R 1

The units digit of a two digit number is 2 more than 3 times the tens digit. When the digits are reversed, the new tens digit is 4 times the new units digit. Find the number and it's reversal.

2007-09-04 12:54:24 · 2 answers · asked by ALEX 1

One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching the first one, you throw a second one at a low angle and timed to arrive at your opponent before or at the same time as the first one. Assume both snowballs are thrown with a speed of 30.0 m/s. The first one is thrown at an angle of 75.0° with respect to the horizontal.

(b) How many seconds later should the second snowball be thrown if it is to land at the same time as the first?
s

2007-09-04 12:36:44 · 2 answers · asked by justin l 1

Factor completly



1) 2y^3 -128

2) 2y^3 - 54z^3

2007-09-04 12:35:51 · 1 answers · asked by Aimee R 1

and please if you can help me find a website that can teach you! thanz!

2007-09-04 12:34:00 · 5 answers · asked by Anonymous

write an equation of the line passing through (1, 3) and parallel to 2x + 3y = -5

2007-09-04 12:23:40 · 2 answers · asked by smiley 1

2007-09-04 12:17:23 · 1 answers · asked by CPUcate 6

are these two things the same?

2007-09-04 12:13:56 · 12 answers · asked by computer whiz 5

Use the methods of cyndrical shells to find the volume of the solid obtained by rotating the region bounded by the given curves about the x-axis.

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

2007-09-04 12:08:44 · 1 answers · asked by bdgurl5388 1

Please help me to solve this question using substitution method. Thank you.

x/2+y/3=7
x/4-y/9=1

2007-09-04 11:59:35 · 4 answers · asked by AnswerGirl 2

2007-09-04 11:58:40 · 1 answers · asked by allison g 3

it would also help if you used those same numbers to make problems to equal numberSSS between 1 -100

2007-09-04 11:53:53 · 1 answers · asked by k.b. 2

It takes a radio wave 1.3 seconds to travel from the Earth to the moon. How far is the moon from Earth?(radio waves travel at the speed of light)

2007-09-04 11:53:52 · 1 answers · asked by Claire P 1

its a polar form and complex numbers prolbem
it says Find but they dont specify what so Im confused
1) |-0.2i|
2) |cos(theta) + isin(theta)|

2007-09-04 11:52:10 · 1 answers · asked by Teenage Dirtbag 1

use each digit 0,1,2,3,4,5 exactly once to write a decimal subtraction problem.the difference must be the same as one of the decimals in the problem.PLEASE look carefully,if you cant help me thats ok cause i couldnt figure it out either.

2007-09-04 11:51:29 · 2 answers · asked by ladybug101 1

heres the problem

a set of numbers is said to be closed under a certain operation if, when you perfrom the operation any 2 #s in a set, the result is also in a set.

the set of real #s is closed under addition. This means that when you add any two real numbers, the sum is also a real #

is the set of real numbers closed under subtraction?

2007-09-04 11:48:43 · 3 answers · asked by Cutie-pa-tootie 1

2 + 5 1/4?
It's a fraction but I can't remember how to solve it.
two plus 5 and one fourths??

2007-09-04 11:45:56 · 13 answers · asked by Anonymous

Simplify m^2-1
-------------
2-m-m^2

Part of a summer assignment. Explanation would be great.
Any response will be greatly appreciated.

2007-09-04 11:42:18 · 5 answers · asked by Luke D 2

2007-09-04 11:20:46 · 7 answers · asked by Jeffrey M 1

...do not intersect.

The discriminants are 16 for the former and -23 for the latter (discriminant is b^2 - 4ac).

My friend said that since the parabola only had an imaginary solution, that it did not cross the x axis, but that doesn't mean they don't intersect.

2007-09-04 11:13:52 · 1 answers · asked by John B 2

2007-09-04 11:13:13 · 8 answers · asked by spinnyvine 1

I was thinking it would be all numbers so it would just be the plane of the graph because no matter what you put in you get 0 = 0 which is true. Is this right?

2007-09-04 11:07:14 · 4 answers · asked by John B 2

can u solve Solve 2x^2-3y-5=0 by compleating the square. and can you please show me the steps thanks

2007-09-04 10:58:12 · 2 answers · asked by ajnsdsjafnsafu 1

I heard it in maths class today and there was:

Write 10,000 to the power of 10 or something like that...

Maths is so confussing!

2007-09-04 10:57:44 · 12 answers · asked by Anonymous

Last fall, a gardener planted 65 iris bulbs. She found that only 56 of the bulbs bloomed in the spring?
a) Find the empirical probability that an iris bulb of this type will bloom
b) How many of the bulbs should she plant next fall if she would like at least 92 to bloom?

2007-09-04 10:56:55 · 5 answers · asked by Tim M 1

Its alegbra I

2007-09-04 10:53:26 · 3 answers · asked by nrpatel9556@sbcglobal.net 1

You can go to http://www.mindchallenger.com for brain teasers like this along with answers to some.

George is driving 100 ft/sec toward an intersection. He looks to his right, and sees Bill, driving 30 ft/sec toward the same intersection (they are approaching at right angle towards each other and not head on). George foolishly slams on his brakes. If he had kept going 100 ft/sec, he would have been through the intersection long before Bill got there. At the instant that he slams on his brakes, the center of George's car is 125 ft from the intersection, and the center of Bill's car is 150 ft from the intersection. George's brakes give his car an acceleration of -30 ft/sec/sec. Bill never changes his speed. Each car is 13 ft long and 7 ft wide. Is there a collision?

2007-09-04 10:46:45 · 4 answers · asked by Anonymous