Science & Mathematics - 28 December 2006

8. x^2 + 9x +7 =0

10. 3x^2 + 7x - 6 = 0

14. 3= 7x - 4x^2

20. 3x^2 - 4x + 2 = 0

2006-12-28 14:50:40 · 4 answers · asked by Anonymous in Mathematics

2006-12-28 14:50:21 · 4 answers · asked by boobboo77 2 in Astronomy & Space

2006-12-28 14:50:12 · 3 answers · asked by Samuel 1 in Astronomy & Space

probally lots.

2006-12-28 14:47:25 · 13 answers · asked by Anonymous in Astronomy & Space

I am needing to decide on a career and would love to rescue animals and check them out, rehabilitate them, find them good homes or release them. I thought about being a vet but I couldn't deal with surgery and putting them to sleep every day and not forming some type of bond or relationship.

2006-12-28 14:47:22 · 7 answers · asked by Anonymous in Zoology

2. x^2 + 6x -5 = 0

4. 4x^2 + 20x = 0

6. 3x^2+ 10x + 8 = -17x -2

2006-12-28 14:46:41 · 3 answers · asked by Anonymous in Mathematics

2006-12-28 14:42:07 · 31 answers · asked by Lena 3 in Other - Alternative

Given the angle and the radius, How do I determine the coordinates of the ends of the arc (i.e. the (x,y) of the ends of the arc in the circumference)

This can be thought of a pie chart where for each pie I would want to calculate the x,y of the ends of each pie on the circumference.

Thanks,

Jenni

2006-12-28 14:42:03 · 3 answers · asked by Jessica W 1 in Mathematics

aka. Are there aliens that are as smart if not smarter than us out there? When (if ever) do you think we will reach contact with them?

2006-12-28 14:41:03 · 10 answers · asked by John 2 in Astronomy & Space

2006-12-28 14:37:15 · 2 answers · asked by Anonymous in Mathematics

(3x-cubed - 2x-to the first power + 7y-to the first power)

I came up with -124 but the answer is apparently undefined? How so?

2006-12-28 14:36:44 · 8 answers · asked by feedazombie 1 in Mathematics

2006-12-28 14:34:14 · 8 answers · asked by Miami_Mike 1 in Earth Sciences & Geology

I need to no for a sicnce project.

2006-12-28 14:33:26 · 11 answers · asked by Anonymous in Earth Sciences & Geology

1.between what two consecutive intergers is the value of log(2)66


5. a line with a slope of -3 passes through the point (0;9). which of the following is another point on this line


A. (-3,9)
b. (1,8)
c. (3,1)
D. (7,-12)
e. (10,-20)


9. three circles are inscribed in a rectangle as shown. if the height of the rectangle is 30 cm. , find the area of the shaded region.


8. solve the absolute value inequality

I 2x + 7 I
------------ > 1
I 3 I



9. simplifiy and plot the result of the complex plane

(3+3i)- (-2-i)

2006-12-28 14:32:53 · 5 answers · asked by dojorno5 2 in Mathematics

2006-12-28 14:31:42 · 7 answers · asked by Anonymous in Botany

I got stuck on one problem and it's about the melting points of the Alkali Metals. I have to explain why the melting point of alkali metal decrease down the group: Li to Cs. The book said that the bigger the molecule is, the higher the London dispersion, therefore resulting in higher intermolecular forces, finally to higher melting point. But then Alkali metal is opposite of what the book said... Why is that? I don't know how to answer it, please help me! (I already posted another question regarding this but I guess I worded the question weird, so I am posting another question.) Thank you!

2006-12-28 14:31:40 · 4 answers · asked by ljh9092 1 in Chemistry

2006-12-28 14:27:02 · 10 answers · asked by Archie F 1 in Astronomy & Space

When I was younger I just had to take on apart to see what made it tick. Bad idea:) Had a nasty suprise when I pressed the button by accident. Stun like hell.

2006-12-28 14:25:30 · 5 answers · asked by Anonymous in Engineering

1 = square root of 1 = square root of -1 multiplied by -1 = square root of -1 multiplied by square root of -1 = (square root of -1)^2 = -1. Hence, 1 = -1.

2006-12-28 14:24:07 · 4 answers · asked by Teolo B 1 in Mathematics

If A & B are two fixed points and P is a variable point such that PA/PB is a constant (not equal to 1), then prove that P always lies on a circle intersecting AB in P & Q where P & Q divides AB internally and externally respectively in ration K:1

2006-12-28 14:23:47 · 1 answers · asked by Anonymous in Mathematics

regular years...not light years. Alpha Centuri..the nearest presently ?

2006-12-28 14:15:45 · 4 answers · asked by Anonymous in Astronomy & Space

The area of the base of a right prism is 100 square inches. The height of the prism is 25 inches. What is its volume?

2006-12-28 14:06:52 · 5 answers · asked by Anonymous in Mathematics

I know some like Pegasus, Canis Major and Minor, the Big and Little Dipper, but i for got the rest so if you sould tell me the rest the would really help me out extremely.Thank you very much.

2006-12-28 14:03:27 · 4 answers · asked by karatechamp2007 1 in Astronomy & Space

i dont know, so im curious what is teh answer >:O

2006-12-28 14:00:50 · 5 answers · asked by b h 1 in Mathematics

What is the expected molecular weights of non-reduced and reduced IgG and the reason
for this relating to the heavy and light chains?

The Expected Molecular weight obtained from SDS-PAGE.
using 7.5% gel for non-reduced sample and 12.5% gel for reduced sample

2006-12-28 14:00:14 · 1 answers · asked by BrInGiToN 2 in Chemistry

Draw randomly two lines A and B at an angle with each other, say between 30 and 90 degrees. How will you draw two lines starting from the intersection point of A and B that will trisect the angle between them.

2006-12-28 13:55:52 · 5 answers · asked by dannyjcris523 1 in Mathematics

2006-12-28 13:55:08 · 4 answers · asked by lil_thab08 1 in Mathematics

Indicators are used in autoclaving to ensure that sterilization is complete. One type of chemical indicator turns color when it has reached a specific temperature and the other type turns color when it has reached a specified temperature and been exposed to steam. Do you know hich type of indicator should be used and why?

2006-12-28 13:55:02 · 2 answers · asked by Steenskees 2 in Biology

If y varies inversely as x, and y = 1 when x = 4, find the y when x = 18
5

2006-12-28 13:54:33 · 8 answers · asked by shawntaelsey123 1 in Mathematics

2006-12-28 13:50:23 · 5 answers · asked by Anonymous in Mathematics