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Mathematics - 1 December 2007

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Perform each of the indicated operations.

1.) 3rs(5r^2s-4rs+6rs^2)

2.) 7xy^3-2 1 x^2y^2+14 x^3y/-7x y

Factor each of the following polynomials completely.

3.) 4p^3-144pq^2

4.) a^2-7a+12=0

2007-12-01 12:33:50 · 2 answers · asked by Anonymous

what is 15degrees and 30min. in degrees?

2007-12-01 12:33:12 · 1 answers · asked by Anonymous

A triangle with the following vertices: (-5, 7), (5, 4), (7, -8). I know this is extremely easy, but I simply forgot the procedure. Help?

2007-12-01 12:32:07 · 5 answers · asked by wrongnumber 1

algebra

2007-12-01 12:25:12 · 5 answers · asked by Amritpal M 1

{-5,2,(-4/5),(8/25),(-16/125),(32/625).....}

2007-12-01 12:25:01 · 4 answers · asked by theStudent 1

Given the point (5.7, -1.2) in rectangular coordinates, find its polar coordinates.

please help & explain step by step so I can follow, thanks

2007-12-01 12:00:24 · 5 answers · asked by Anonymous

Given:

z= 2((cos 3pi/4) + i sin (3pi/4))

w = 3((cos pi/2) + i sin (pi/2))

I have to calculate the following & leave in polar form:

a) z *w

which I got: 6((cos 3pi/4 + pi/2) + i sin (3pi/4 + pi/2))

b) z/w

which I got: 2/3 ((cos 3pi/4 - pi/2) + i sin (3pi/4 - pi/2))

c) z^4

I need help with these one

please help and explain step by step so i can follow, thanks

ALSO ARE THE OTHER TWO RIGHT???

2007-12-01 11:58:23 · 1 answers · asked by Anonymous

The circular blade on a saw has a diameter of 7.5 inches and rotates at 2400 revolutions per minute.

A.) Find the angular speed in radians per second.
B.) Find the linear speed in of the saw teeth (in feet per second) as they contact the wood being cut.

2007-12-01 11:58:15 · 3 answers · asked by Anonymous

what is the horizontal asymptote of 1/[[x]]
and what is the horizontal asymptote of y=c
where c is a constant ?

2007-12-01 11:54:15 · 2 answers · asked by Scooter 2

For example:
P1 (-2,4)
P2 (9,-6)
P3 (x,y), note that there are 2 P3's bcoz they can be found on both sides of the given segment

2007-12-01 11:47:44 · 6 answers · asked by Anonymous

if you let x=0 and let y=0
4x - y = 10

2007-12-01 11:38:07 · 22 answers · asked by Anonymous

the radical expression is negative 50

2007-12-01 11:38:01 · 3 answers · asked by Rhonda H 1

Given triangle ABC with corresponding sides of length a, b, and c. In triangle ABC, Show that c² = (b² - a²)²/(a² + b²).

2007-12-01 11:34:48 · 2 answers · asked by Northstar 7

If log(base8)3 = x and log(base4)7 = y, find an expression in terms of x and y for:

1) log(base2)21 and 2) log(base2)63

2007-12-01 11:28:42 · 2 answers · asked by Anonymous

In triangle ABC, the measure of
Please Do Not Tell Me the Answer. I just want to know HOW to do it. My brain hurts from trying to think of how to do it.

Thanks in Advance!!! ^_^

2007-12-01 11:24:45 · 6 answers · asked by *Blackfoot_Princess* 2

x^3 + 7x^2 + 17x + 15

thanks for the help!

2007-12-01 11:19:10 · 5 answers · asked by E=MC^2 1

x + y = 5
2x - y= 4
x + 4y = 8

2007-12-01 11:18:35 · 2 answers · asked by Anonymous

How to find the inverse of f(x) = 3^(x-1) - 2

2007-12-01 11:17:13 · 1 answers · asked by Black_Hornet 3

1) 3a - 5a = 8a + 4

= -2a = 8a + 4

= +2a (cancel both 2a = 0) = 2a ( subtract 2a to 8a = 6)

= 0 = 6 + 4

= o = 10

= empty set

*********************************************
2.) 2/3 x – 5 / 6 x – 3 = ½ x – 5

Lcm is 6

(6) 2/3 x – 5 / 6 x (6) – 3 (6) = ½ x (6)– 5(6)

12/3 x – 30/6 x -18/3 = 6/2x – 30/5

4x – 5x -6 = 3x-6

i don't know what the next step is.

2007-12-01 11:17:10 · 4 answers · asked by Anonymous

The bearing form B to C is S41W. From point A, 200 yards from B, the bearings to B and C are S74E and S28E respectively.
Find the distance from B to C.
What's confusing is that how can B and C have two bearings that is SE?

2007-12-01 11:14:23 · 1 answers · asked by hiddengirl 1

A set of batteries is used in a research satellite. The satellite can only run on one battery, but runs best if more than one is used. Engineers have determined that a variance of 2 = 18 months is most desired. A random sample of 30 batteries gave a sample variance of s2 = 17.2 months
Find a 95% confidence interval for the population variance of the batteries

This is all the info I have. Can anyone help me figure out where to start?

2007-12-01 11:13:43 · 3 answers · asked by Anonymous

how did you get your answer...?

2007-12-01 11:11:18 · 3 answers · asked by queen_lodge 1

cube,then radical sign,then under radical sign put24x^5y^7

2007-12-01 11:03:09 · 4 answers · asked by Rhonda H 1

x^2/5 divide by x^7/5

2007-12-01 10:57:46 · 10 answers · asked by Rhonda H 1

What is the area of 5cm, 6cm,10cm, and 3cm. And How do you find it????
this is the shape:
5cm
____
l l _____
l__________l3cm
10 cm

The 6cm goes on the left side!( the one that is below the 5 cm and above the 10 cm)
The one that has ll_____ is supposed to be shifted over a bit so it lines up with the 5cm line and the 3 cm line!!
Thanks for your help!!!!

Alaskan_Alli

2007-12-01 10:55:03 · 4 answers · asked by Alli L 1

how would you write this as a fraction a / b , where a and b are intergers but b "=/=" 0


a) .75

b) .39 ( there is a line over 9)

2007-12-01 10:54:35 · 6 answers · asked by Anonymous

??????? help

2007-12-01 10:45:12 · 7 answers · asked by MCRmy soldier 2

2007-12-01 10:39:10 · 11 answers · asked by Anonymous

Solve for x

sinxtan3x=0 [-π,0]


The answer is supposed to be x = 0, -π, 3π/4, -3π/4 but I have no clue how to simplify the above equation. Please show steps.

2007-12-01 10:34:45 · 6 answers · asked by Dave H 2

In the following exercise, test for symmetry and then graph the polar equation.

r = sin0(theta) + cos 0(theta)

2007-12-01 10:33:36 · 1 answers · asked by ambriz_jesus16 1

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