Mathematics - 12 August 2007

4x^2 - 6x + 2 = 0
show your work
so i can understand please

2007-08-12 08:54:20 · 7 answers · asked by Anonymous

My math book shows an example of vector cross products:
[1, 3, 4] x [2, -5, 8] = [4, -16, 10]

When I looked at it the answer didn't really make sense to me so I worked it out on paper and I got:
[44, 0, -11]

I thought, hmm....I wonder what I'm doing wrong so I punched it into my calculator and it gave the same answer as what I got.

What did I do wrong?

Here is how my book is working it out:
[1, 3, 4] x [2, -5, 8] = [(3)(8)-(-4)(-5), (-4)(2)-(1)(8), (1)(-5)-(3)(2)] = [4, -16, 10]

I'm completely lost here
Please help!

Thanks in advance

2007-08-12 08:52:16 · 4 answers · asked by Ryan N 2

2007-08-12 08:46:28 · 2 answers · asked by turtle chick 1

I need someone to check my answer of

Point 1: (0, -1)
Point 2: (0,-1)

If this is incorrect, please explain with detail how to solve for this. Thank you.

2007-08-12 08:44:02 · 4 answers · asked by ? 1

2007-08-12 08:42:32 · 3 answers · asked by nbonagas 2

Factor the polynomial completely. If the polynomial cannot be factored, write prime.
x^2 + 30x + 225

(x + 15)^2
(x + 15)(x - 15)
(x - 15)^2
prime



Problem 2

Factor the polynomial completely. If the polynomial cannot be factored, write prime.
18y^2 + 81y - 45

(18y - 9)(y + 5)
9(2y - 1)(y + 5)
9(2y + 1)(y - 5)
prime

2007-08-12 08:40:44 · 2 answers · asked by Anonymous

2007-08-12 08:28:18 · 20 answers · asked by Anonymous

I need to round to the nearest hundredth.

2007-08-12 08:11:58 · 7 answers · asked by casper5 3

Simplify the following algebraic expression:
3(k + 7) + 4

Simplify the following algebraic expression:
3(2a - b + 2z) + 3

2007-08-12 08:02:33 · 6 answers · asked by Anonymous

A decimal with an endless series of 3's added by itself should be a decimal with an endless series of 9's. That is, 0.333... times 3 should equal 0.999..., but it equals 1.

Why?

2007-08-12 07:54:26 · 4 answers · asked by HandsOnCelibacy 4

In / /ABCD, the measure of show work plz

Thank you so much!

2007-08-12 07:49:45 · 2 answers · asked by Anonymous

(-6,2), (2,0), (-10,-3), (-18,5) are solutions for the equation x+4y=2?

I have tried to solve this problem and I cannot figure it out. I have never had an Algegbra class before now and I am really lost. If you could show the work so I can take notes, would be greatly appreciated. Thank you.

2007-08-12 07:48:44 · 4 answers · asked by ? 1

2007-08-12 07:43:30 · 5 answers · asked by Cricket 1

2007-08-12 07:42:34 · 9 answers · asked by Anonymous

x2 - 8x + 12

Factor this quadratic and show all work so i can understand please.

2007-08-12 07:29:47 · 5 answers · asked by Anonymous

^=powers

2007-08-12 07:14:55 · 3 answers · asked by Anonymous

solve the equation

2007-08-12 06:58:10 · 3 answers · asked by Anonymous

write the expression in the form a +bi, where a and b are real numbers.

2007-08-12 06:56:28 · 8 answers · asked by Anonymous

simplify

2007-08-12 06:46:51 · 5 answers · asked by Anonymous

2007-08-12 06:44:39 · 48 answers · asked by krt c 1

simplify the expression

2007-08-12 06:40:21 · 4 answers · asked by Anonymous

simplify the expression. Assume (a) and (b) are positive real numbers and (m) and (n) are rationalal numbers.

2007-08-12 06:37:01 · 2 answers · asked by Anonymous

use the product and quotient rules to simplify. the variables represent positive real numbers.

2007-08-12 06:31:31 · 6 answers · asked by Anonymous

simplify the radical

2007-08-12 06:29:30 · 8 answers · asked by Anonymous

Find the integers

2007-08-12 06:25:07 · 7 answers · asked by noidea 1

1. Find the measures of the other three angles of a parallelogram of one angle measures:
b. 68

thank you! can you show me the work plz

2007-08-12 06:24:28 · 4 answers · asked by Anonymous

This is a test for the genius.

2007-08-12 06:12:36 · 8 answers · asked by Rokkky 2

I have a summer Algebra packet for Algebra II
and I need help with the polynomials.
Please help??

1. (3x^2 - 4x + 6) + (2x^2 - x + 9)
2. (7m^2 + 5m - 9) - (3m^2 - 6)
3. 4a(3a^2 + b)
4. (3x + 5)(2x-4)
5. (b-5)(b+5)
6. (1/2x^2 + 1/4- 2/3) + (3/4x^2 - 1/2x + 3)
7. (2x + 3)(x^2 - 3x + 4)
8. (3x - 2y)^2

If you can answer just one or two of those I would GREATLY appreciate it.
I have 5 chapters of math due tomorrow for my Algebra II honors class!
This is my pain issue with the packet.
Plleeeaassse Help!
If you could just walk me through one of the problems I would be so grateful!

2007-08-12 06:09:06 · 6 answers · asked by upsetness 2

2007-08-12 05:57:40 · 8 answers · asked by ali k 1

2007-08-12 05:55:52 · 9 answers · asked by Chloe 3