Mathematics - 20 December 2007

1. 3x - 4y = 7
2x + 4y = 8
(1,2)
(1,-1)
(2,4)
(3, 0.5)

2. 5m + 3n=22
5m+ 6n=34
(1,2)
(1,-1
(2,4)
(3, 0.5)

2007-12-20 11:16:23 · 4 answers · asked by Anonymous

the equation of two sides of a triangle PQR are y-3x+6=0 and 3y-4x-2=0. D is the foot of the perpendicular from P to QR and the coordinates of D are (0, 4). find the equation of QR.

please explain .. thanx alot

the answer is 2x+y-4=0.. but please show me how u get it.. thanx

2007-12-20 11:15:32 · 2 answers · asked by Anonymous

a median in an isosceles triangle is also a perpendicular bisector correct? only the one that is from the vertex, that connects the two congruent sides, to the opposite side

2007-12-20 11:11:44 · 12 answers · asked by roger 1

i have an 80 in algebra and i need it to stay at a B. Our final counts as 15% what do i atleast need to make to keep my grade the same?

2007-12-20 11:09:17 · 13 answers · asked by kellyissohot346 1

2007-12-20 11:01:33 · 4 answers · asked by Kimberly M 1

Alona told her son Frank to paint the fence. Frank whined and complained. So she said " OK, you dont have to do it today. Instead paint 1/2 of one board today. Tomorrow paint 1/3 of a board and 2/3 of a board. I dont care which board you paint. The next day paint 1/4 of a board, 2/4 of a board, and 3/4 of a board. That will cover 3 days; continue like that for another 22 days. I'll do the rest." If you add up all the boards Frank completed and the parts he painted, Frank paint the eqivalent of how many boards?



Be sure to answer with steps/ exlpanation

2007-12-20 10:48:33 · 4 answers · asked by frost breezy 2

2007-12-20 10:37:53 · 3 answers · asked by shy one 2

x^2=7x-9

2007-12-20 10:36:10 · 5 answers · asked by shy one 2

2007-12-20 10:35:15 · 7 answers · asked by Kimberly M 1

what is the answer to this problem?

x to the 1/2 times y to the 1/3

is it x to the 3/6 and y to the 2/6
or do you combine the exponents and then its (xy) to the 5/6

i know if it were x to 3/6 times x to the 2/6 you add the exponents but idk what to do when there are two different variables

this is the only thing im confused on. thanks for the help

2007-12-20 10:31:07 · 3 answers · asked by damon1570 1

2007-12-20 10:19:59 · 5 answers · asked by Jasmine 1

2007-12-20 10:14:33 · 2 answers · asked by arjay c 1

2007-12-20 10:14:14 · 3 answers · asked by Kimberly M 1

2007-12-20 10:01:20 · 4 answers · asked by mattttt 1

My Calc Assg. over break is to come back to school in January and be able to speak intelligently on "Fermat's Little Theorem," and there could be a quiz that's going to make us prove it. No one in my class has ever heard of this before, and it's not in the book.
I found a ton of stuff on it online, but it makes no sense and its really weird. How should I learn this??

2007-12-20 10:00:34 · 5 answers · asked by Anonymous

2007-12-20 09:54:31 · 5 answers · asked by Anonymous

http://i3.tinypic.com/72ae8mv.gif
A. 55
B. 70
C. 110
D. 125

http://i9.tinypic.com/73dg4yb.gif
A. 50
B. 65
C. 80
D. 130

2007-12-20 09:47:48 · 3 answers · asked by Anonymous

What's 3.8333333..
in fraction form?

2007-12-20 09:46:56 · 4 answers · asked by Anonymous

Okay, so a box dimensions that are 50 by 50 by 50.
I have to calculate a volume of a box that is 25% larger than this box and the new dimensions??
I think the volume is 156 250 cm squared for the new one but i dont know about the dimensions???

2007-12-20 09:33:08 · 10 answers · asked by Anonymous

2007-12-20 09:29:38 · 7 answers · asked by Anonymous

2y(2nd power)-11y+12

2007-12-20 09:27:52 · 5 answers · asked by ILIKETOPARTYY~! 3

2007-12-20 09:23:35 · 8 answers · asked by peaceful79 1

if f(x)= (5x^2+3x-1)^(1/2)

2007-12-20 09:13:35 · 4 answers · asked by PRob 2

8 - 2/3x = 17 + 1/3x
i need it in 0=ax+b form (aka standard form)
thanks

2007-12-20 09:07:07 · 13 answers · asked by Kristen V 1

2007-12-20 09:00:32 · 7 answers · asked by Samantha T 1

non-right angled isocles triangles

2007-12-20 08:59:50 · 4 answers · asked by Anonymous

http://tinypic.com/view.php?pic=87iysxt&s=1


a. AAS only
b. ASA only
c. either ASA or AAS
d. neither

2007-12-20 08:51:36 · 5 answers · asked by Anonymous

2007-12-20 08:45:28 · 7 answers · asked by Latoya G 1

The equation which describes the logarithmic phase of bacterial growth in batch culture is: Log10Nt = 0.301kt + log10N0.

a. derive the equation

2007-12-20 08:37:19 · 3 answers · asked by Anonymous

2007-12-20 08:36:12 · 5 answers · asked by Anonymous