Mathematics - 4 December 2007

3x+2y=-11
-3x-2y=11

2007-12-04 14:20:49 · 12 answers · asked by Anonymous

2007-12-04 14:17:17 · 6 answers · asked by rudiball 1

0= x^2+2x+16

2007-12-04 14:05:37 · 4 answers · asked by Randi S 1

2007-12-04 14:04:57 · 6 answers · asked by Alexis H 1

1 over 3 times X = 8+7
IN steps please....
and 2nd question is
2 times X = 1/2 - 1/6
1/2 and 1/6 is in fractions.

2007-12-04 14:03:39 · 2 answers · asked by tommy_li05 1

Find the y-component of the package's weight force vector ("w") in the given rectangular coordinate system, knowing that its weight is 24 pounds and that the angle of inclination of the plane is 16 degrees. Type in your numerical answer in pounds, rounded to two decimals

2007-12-04 14:03:32 · 1 answers · asked by Anonymous

Determine and classify the points of discontinuity in each of the following:

f (x)= x-1/(x+3)(x-2)

f (x)= x3-27/x2-9

2007-12-04 14:01:48 · 1 answers · asked by Kay 3

then why doesn't -3/8 + 1/4 = -5/8?

2007-12-04 13:55:06 · 8 answers · asked by Anonymous

2007-12-04 13:46:58 · 2 answers · asked by Anonymous

I need the problem factored down to a binomial multiplied by a binomial.

2007-12-04 13:46:40 · 7 answers · asked by Anonymous

2007-12-04 13:42:16 · 8 answers · asked by tiberouscain 1

Simplify: (2a-5)(a^2-3a-9)
Simplify: 2x^2-x[3-2(x+3)] I think the second one is multiplication of a polynomial but I'm not sure

2007-12-04 13:30:39 · 2 answers · asked by tianna_85902 1

???

2007-12-04 13:27:46 · 2 answers · asked by mizz kay 3

my problem looks like this, i tried my best to recreate how it looks so bear with me

..[4 ......y] .. [12 ...-15]
x|.......... .|..=|..............|
..[7 .....2.] ...[21 .......z]

anyway, i know how to do regular ones, but the outside variable (x) is making it more difficult for me to understand...can anyone explain how to do this?

answers to the problem are:

x= 3
y= -5
z= 6

2007-12-04 13:25:35 · 2 answers · asked by Joe 2

mime are Puggy, D.L Santa, Dr. D, Puzzling, and Pi r square.

I really admire those people above, and of course i also admire others. They've been helping people for more than 1 year now, i believe. I'm sure many people are better at math thanks to their helps.

2007-12-04 13:25:30 · 5 answers · asked by Anonymous

How many different ways can you make up 1000, using exactly eight eights and no other numbers and the usual mathematical operations of arithmetic.

i found two of them.
but need more.
i got these two
888+88+8+8+8=1000
and i really can't remember the other one.
i need to find least one more.

2007-12-04 13:21:50 · 8 answers · asked by vhs1cougar 1

2007-12-04 13:13:17 · 1 answers · asked by Anonymous

2007-12-04 13:13:14 · 2 answers · asked by Riley 6

You are in charge of 65 youths. An extra staff member will be required if this population increases by 20%. What is the number of youths that would require an extra staff member?

What formula do u use to get the answer?

2007-12-04 13:11:12 · 3 answers · asked by Anonymous

how do i set and solve this problem

thanks in advance for any help

Earth rotates on an axis through its poles. The distance from the axis to a location on earth 40 degree N latitude is about 3033.5 miles. therefore a location on on Earth at 40 degrees N latitude is spinning on a radius 3033.5miles . compute the lnear speed on the surface on the earth at 40 degrees latitude.

2007-12-04 13:05:55 · 1 answers · asked by Krazyk78 1

a bank contains 100 coins, each is either a nickel, a dime, or a quarter. there are twice as many quarters as nickels. the value of the collection is $13.75. how many quarters are in the collection?

how do you solve this? thanks

2007-12-04 12:52:28 · 5 answers · asked by Anonymous

A farmer has 4 times the number of ducks as dogs with a total of 36 legs. How do you set up equations?

2007-12-04 12:49:12 · 8 answers · asked by rrogers_1 1

The ratio of the opposite to the hypotenuse is .967 and defined to be the sine of the angle c = 75.5 degrees.

How did they find angle c from .967?

Other details: hypotenuse= 8 opposite=7.745 adjacent=2

2007-12-04 12:46:25 · 3 answers · asked by One Love 3

When squaring something, such as this, wouldn't you multiply 6x6?

2007-12-04 12:40:20 · 13 answers · asked by Kay 1

2007-12-04 12:39:37 · 9 answers · asked by terri b 1

Find four solutions for the equation 3x + 5y = 15



This one definitely has me stumped. Any help would be great. Also if you could show me how you come to your answer it would be great. Thanks in advance.

2007-12-04 12:37:19 · 10 answers · asked by Superman 2

Here is the problem:
Everything around you is made up of atoms. Atoms are extremely small. An atom is about two millionth of an inch in diameter. Write this number in standard form and then in scientific notation.

I'll give 10 points (if I ever figure out how to...) and best answer to the person who helps me with this question and doesn't give me a stupid answer.

2007-12-04 12:29:45 · 6 answers · asked by mizfits06 4

how would i find an equation in polar coordinates if i am given the cartesian equation (x-1)^2-(y+5)^2=-24

i know x=rcos(theta) and y=rsin(theta) and x^2+y^2=r^2. this problem has a negative y^2 so what do i do?

2007-12-04 12:22:51 · 1 answers · asked by ! 2

i need answers soon if i am to do my math homework- i was absent and i wasn't told hom to divide these fractions for hw

PLEASE HELP

2007-12-04 12:21:56 · 8 answers · asked by Pseudonym 3

2007-12-04 12:21:01 · 1 answers · asked by Anonymous