Mathematics - 20 September 2006

2006-09-20 10:53:45 · 8 answers · asked by Navita 3

How do I find tan theta=.6873 in quadrant III? I need to round my answer to the nearest tenth of a degree

2006-09-20 10:36:15 · 3 answers · asked by yeppperz 1

(i) Show that x^3 - (1+cos@ + sin@) x^2 + (cos@sin@ + cos@ + sin@)x - sin@cos@ = (x-1)(x^2 - (cos@ + sin@)x + cos@sin@)
and deduce that the cubic has roots 1, cos@, sin@

(ii) Give the roots when @ = pi/3

(iii) Find all values of @ in the range 0 <=@<2pi such that two of the three roots are equal

(iv) What is the greatest possible difference between two of the roots, and for what values of @ in the range 0<=@<2pi does this greatest difference occur?

2006-09-20 10:34:00 · 3 answers · asked by Math_Guru 2

how do you factor and how do you find the zeros of:
x^3 - 3x^2

would i need to fill in the missing places, i.e. x^3-3x^2+0x+0 ?
thanks for your help.

2006-09-20 10:29:43 · 7 answers · asked by shih rips 6

2006-09-20 10:18:36 · 5 answers · asked by Anonymous

2006-09-20 10:05:02 · 4 answers · asked by Anonymous

it is part of my haomework an di need help

2006-09-20 10:04:27 · 8 answers · asked by kymberlee 1

2006-09-20 10:02:08 · 7 answers · asked by Anonymous

I know that 3*3=9 but that dont work backword like 9/9=1 not 3, how do you find this.

2006-09-20 09:59:05 · 9 answers · asked by Anonymous

2006-09-20 09:58:43 · 2 answers · asked by Anonymous

2006-09-20 09:52:57 · 13 answers · asked by Anonymous

I need help solving the following diffEQ:


y'''+2y''-5y'-6y=100e^-3x+18^-x

no other information provided, ie. initial values.

I have only seen examples where the roots are all the same. In this example, its @ 2, -1, -3.

How do I work it from here?

2006-09-20 09:52:24 · 2 answers · asked by wilburrr 2

2006-09-20 09:51:30 · 2 answers · asked by Monte T 6

2006-09-20 09:35:54 · 12 answers · asked by Whitey 1

would it be (x^2-0) (x^2+0) ?
thanks for your help.

2006-09-20 09:34:10 · 9 answers · asked by shih rips 6

22=2x+8
-8 -8
2x= 14
x=7
is the format O.K.

2006-09-20 09:30:36 · 9 answers · asked by safi55 2

The margin is .40. The coffee stand gets appx about 25% of the people from the news stand and the condos combined. In the end 25% spends about $8. How would one set up that as an equation

2006-09-20 09:26:21 · 2 answers · asked by evolving_40 2

The length of a rectangle if fixed at 8 feet. For what widths will the area be less than 65.8 ft^2.

Juanita scored 75%, 82% and 78% and her first three tests. What possible scores can she get on the fourth test to have at least an 80% average?

2006-09-20 09:25:45 · 13 answers · asked by Anonymous

how do you write the "quad" program for a ti83+ calc? is it...
PROGRAM:QUAD
:DISP "QUADRATIC FORMULA"
:DISP "ENTER VARIABLES"
:PROMPT A,B,C
:(-B+SQRTB^2-4*A*C))/(2*A)->X
:(-B-SQRTB^2-4*A*C))/(2*A)->Y

i have the program but i can't figure out how to space the letters? what key do you press to put spaces between letters?
any information is appreciated. thanks for your help.

2006-09-20 09:24:51 · 1 answers · asked by shih rips 6

the problem2(x-3)-3(x+5)=3(x-2)-7

for the second 3 do I count it as a negitive when multiplying it to the 5?

2006-09-20 09:24:29 · 15 answers · asked by Ash1227 2

2006-09-20 09:18:25 · 20 answers · asked by Anonymous

what is 531,659 in pounds converted to us dollers?

2006-09-20 09:11:24 · 10 answers · asked by Anonymous

2006-09-20 08:55:02 · 3 answers · asked by Rafael a 1

Find the measure of an angle whose supplement is ten less than three times its complement.

2006-09-20 08:53:42 · 3 answers · asked by Anonymous

Is 10 fold an amount equal to 1 x 10?

is a 10 fold increase of 5 = 50?
is a 100 fold increase of 5 = 500?

2006-09-20 08:41:59 · 16 answers · asked by zeg304 1

2006-09-20 08:39:44 · 27 answers · asked by Anonymous

Hey guys... Please can you tell me what the rule is for simplifying surds that are being added?

I have this seemingly simple question:

root 8 + root 18 (answer is apparently 3 root 2... I dont know how to get that answer)

If they were multiplied it would just be, put them both under one square root and work it out.

Thanks for any help :D

2006-09-20 08:38:29 · 4 answers · asked by Jiblob 2

2006-09-20 08:38:21 · 7 answers · asked by Anonymous

All About Ratios –A famous Texas chef has a secret recipe for her chili. When people ask her for it, she hands them a card with the complete recipe except for 1 detail. For the missing detail, she gives them the following clue:

For a 3-quart pot of chili, use a combination of peppers and tomatoes totaling 12 items in one of the following ratios.

If the answer is in whole numbers, we want to know how many peppers and how many tomatoes we should use.

1. Which ratio is correct?

2.Then how many peppers & how many tomatoes will you actually use?

peppers tomatoes
3: 2
2: 3
2: 4
3: 4
1: 6

2006-09-20 08:37:02 · 3 answers · asked by SCHNITZEL 1

2006-09-20 08:32:53 · 7 answers · asked by Anonymous