Mathematics - 27 July 2007

I am going to start college and taking pre calculus, which includes: Solving Linear Equations, Solving Equations of Form ax2-b=0, Quadratic Formula and Applications, Matrix Multiplication, Inconsistent Systems and Infinite Solutions.

Which calculator should I buy: TI 89 or TI 89 Titanium? Will TI 89 be enough?

2007-07-27 16:03:10 · 4 answers · asked by Legend 3

2007-07-27 15:58:47 · 4 answers · asked by ernest b 1

Ok, I understand about like LOG5,25=2 b/c 2 is the exponent thats simple, but what I want to know is, in my textbook for Algebra, it says that LOG24=1.3802112 and this is base-10 common logarithm it says (which is based10) So, why doesnt it show me how to do it manually??? I mean, I just dont understand why it says do it by calculator by hitting the LOG button???????? Is this type of thing only doable by super-geniuses and way beyond me?????

2007-07-27 15:56:20 · 5 answers · asked by Anonymous

1. Add. Express in Simplest form:
(x^2) over (x+4) + (2x-8) over (x+4)

2. Multiply:
(4x-24) over (x^2-2x) * (8x) over (6-x)

2007-07-27 15:37:51 · 4 answers · asked by casper5 3

2007-07-27 15:36:49 · 10 answers · asked by Anonymous

1. A wall measures 3 m by 5.25 m. Allowing 1 gallon of paint for 30 m2 of surface, how many gallons of paint are needed to cover the wall w/ 2 coats of paint
2. Each year in the chinese calendar is named for 1 of the 12 animals. Every 12 years, the same animal is name. If 2002 is the year of the horse, how many years in the 20th century have been year of the horse
3. To calculate the height of a person, archeologist measure the lenghts of certain bones. 1 of the formulas use to determine the person's height in the cm given by
H = 61.421 + 2.31 F,
where F is the length of the femur of the thighbone.
The length of the femur of a 35-year-old woman measure 46.8 cm. find the height of the woman to the nearest hundredth of a m
4. a big water tank is to be filled w/ water. A full-tank requires 25 500 dm3. How many cubic m of water can fill the tank
5. the owner of a tract 10 000 ares sold 3856 ares to dike & sold 380 fewer ares than this to mike. how much land he stil have

2007-07-27 14:11:36 · 2 answers · asked by mikan2 1

if 8^(2-x)=4^(3x) then x=

2007-07-27 13:54:22 · 10 answers · asked by Anonymous

2007-07-27 13:28:28 · 6 answers · asked by Poohbear1113 1

2007-07-27 13:19:35 · 9 answers · asked by Anonymous

Determine whether the following is an expression.
v – • q

A) No B) Yes

2007-07-27 12:59:48 · 2 answers · asked by Anonymous

Write the following phrase using symbols. Use the variable x to represent the number.
Eight less than three times a number
A) 3(x – 8) B) 8 – 3x C) 3(8 – x) D) 3x – 8

2007-07-27 12:58:41 · 6 answers · asked by Anonymous

Solve. 10x – 0.62 = 9(x – 0.95)

A) –8.14 B) –7.79 C) –7.59 D) –7.93

2007-07-27 12:54:25 · 2 answers · asked by Anonymous

Find the y-intercept.
3x – y = –15

A) (0, –5) B) (15, 0) C) (–5, 0) D) (0, 15)

2007-07-27 12:53:56 · 7 answers · asked by Anonymous

and how would you go about solving it ?

2007-07-27 12:50:59 · 4 answers · asked by xbr733 2

No, it's not for homework, I have a bet with my husband. :o)

2007-07-27 12:46:18 · 46 answers · asked by Anonymous

If AC and BD intersects at E,
this is the picture of the question.
http://aycu39.webshots.com/image/24278/2000688765522279865_rs.jpg

2007-07-27 12:35:03 · 6 answers · asked by Mike Gaol 1

Please I can't figure it out and my homework is due tommorrow, everyone I've asked doesn't know how to do it? The faster the answers the better!! Thanx!

2007-07-27 12:11:56 · 9 answers · asked by Alysha D 1

in an online converter, it says 2.5, but by my measurements its more, so what is it

2007-07-27 12:00:40 · 13 answers · asked by Anonymous 1

Given f(x) = –5x – 1, find f(a – 4).
A) –5a + 19
B) –5a – 5
C) a – 10
D) a + 19

Solve the system by graphing.
x – y = 5
x + y = 3

Solve the system by addition.
x + y = 4
x – y = 6

Solve the system by addition.
–2x – 3y = –17
x + 4y = 16

Solve the system by substitution.
x + y = 12
y = 2x

Solve the system by substitution.
x – 4y = –19
–4x – 5y = 13

2007-07-27 11:58:49 · 7 answers · asked by busy me 2

GIVEN:AB and CD intersect at E, BA bisects CD, CA_I_CD, BD_I_ CD
PROVE:a. [triangle]ACE~=[triangle]BDE. b. AE~=BE

2007-07-27 11:49:58 · 1 answers · asked by Mike Gaol 1

2007-07-27 11:38:16 · 5 answers · asked by moe 1

theres a power plant in our area that consumes "230 Million gallons" of water a minute, what size body of water has that much water in it, like would that be an olympic size pool, im just trying to relate to how much water that is in something i can relate it to

2007-07-27 11:35:46 · 8 answers · asked by gopackgo51 1

216
84
700
135
18b squared c3

2007-07-27 11:24:56 · 7 answers · asked by Anonymous

please, i really need this.

2007-07-27 11:21:04 · 3 answers · asked by Anonymous

2007-07-27 11:16:48 · 4 answers · asked by poweret30002 1

Science and medicine. A passenger train can travel 325 mi in the same time a
freight train takes to travel 200 mi. If the speed of the passenger train is 25 mi/h
faster than the speed of the freight train, find the speed of each

2007-07-27 11:10:14 · 5 answers · asked by vadataborn 2

4x-6y=12
8x+2y=6

2007-07-27 11:07:25 · 5 answers · asked by Deandra 1

Perform the indicated operation. Simplify if possible.

9 / x + 6

9 + 6x / x

9x + 6 / x

9x + 6

9 + 6x

2007-07-27 10:54:51 · 1 answers · asked by Anonymous

Temperature at noon: 24 F
Temperature now 8 F

2007-07-27 10:50:01 · 5 answers · asked by yomo g 1

Perform the indicated operation. Simplify if possible.

9y^2 / y - 1 + - 9y / y - 1

9y / y - 1

9y( 9 y + 1 ) / y - 1

9y

0

2007-07-27 10:47:16 · 5 answers · asked by Anonymous