Mathematics - 20 December 2007

What does this tell you about teh real roots fo the equation?

2007-12-20 02:48:48 · 7 answers · asked by Anonymous

2007-12-20 02:34:14 · 6 answers · asked by Anonymous

I did decent on my other portion but im not 100% sure on the last one.

1) 6x^6 - 12x^4 i got 6x^4 ?

2) 27x^3 - 9x^2 + 15x i got 3x ?

3) 3(x+7) - x(x+7) im not sure on this one

2007-12-20 02:31:06 · 2 answers · asked by don 2

2007-12-20 02:30:29 · 8 answers · asked by codrock 6

What is the converse, inverse, and contrapositive of: The sum of the angle of a triangle is 180 degrees.

2007-12-20 02:25:54 · 3 answers · asked by Anonymous

Suppose f:(0, oo) --> satisfies the functional equation f(x + y) = f(xy) for every positive x and y. Show f is constant.

Thank you

2007-12-20 02:22:45 · 2 answers · asked by Liza 1

come after Saturday?

2007-12-20 02:19:51 · 3 answers · asked by clavdivs 4

2007-12-20 02:18:03 · 5 answers · asked by Little Red Riding Hood 1

Solve by completing the square.
1) x²-x-1=0

Use the quadratic formula to solve the following. Leave irrational roots in the simplest radical form.
3x²-4x-5=0

2007-12-20 02:17:11 · 3 answers · asked by Anonymous

2007-12-20 02:16:58 · 2 answers · asked by joseph m 1

A student answered three questions on a 40-question test incorrectly. What percent did the student answer correctly?

2007-12-20 02:16:57 · 3 answers · asked by yummyummy 1

2007-12-20 02:16:39 · 3 answers · asked by Little Red Riding Hood 1

2007-12-20 02:04:31 · 7 answers · asked by Anonymous

can you explain in the easiest way how to find a percent of change. i am learning about it and i dont get it. for example: Find the percent of increase from 22 to 63. step by step how do you do this???
please help

2007-12-20 01:59:58 · 8 answers · asked by Totallyme 2

Lavina wants to buy a rocking chair for $160. She will pay 10% down and pay the rest in six monthly installments. What will be the amount of each monthly payment?

2007-12-20 01:56:57 · 7 answers · asked by yummyummy 1

1. Find the product (x^2+2)X^2+3)

2. Simplify the expression (x^2y^3divided by2^z)^4

3. Divide the expression (12x^2y^2+6x^2y-15xy^2) divided by 3xy

2007-12-20 01:55:53 · 4 answers · asked by Anonymous

http://i16.tinypic.com/7278npv.gif

2007-12-20 01:55:35 · 11 answers · asked by Dr D 7

2007-12-20 01:52:21 · 9 answers · asked by i_am_nasty_nate 1

What is the solution of the following liner system?

2y + 6x = -24
y - 13x = -12

a) (0, -12)

b) 0

c) (0, 3)

d) infinite number of solutions

2007-12-20 01:44:16 · 6 answers · asked by Anonymous

1) x²-6x+___. Complete the sq.

2) x²-6x=16 Solve by completing the square

3) 2x²-3x+1=0

2007-12-20 01:42:11 · 7 answers · asked by Anonymous

$14.36 + $35.72 + $32.05 = ?

2007-12-20 01:37:50 · 7 answers · asked by yummyummy 1

A numismatist (coin collector) decides to divide his coin collection between his children.
The oldest gets 1/2 of the collection,
the next gets 1/4, the next gets 1/5,
and the youngest gets the remaining 49 coins.
How many coins are in the collection?

2007-12-20 01:36:28 · 15 answers · asked by Rod Mac 5

Which of the following cars is accelerating?
a fast moving car
a slow moving car
a car that is slowing down
a car that is not moving


Nancy is training for a marathon. She jogs 10 miles straight south of her home each morning. It takes her 80 minutes. Assuming she runs at constant speed, what is Nancy’s velocity?
0.125 miles/minute
1.25 miles/minute
12.5 miles/minute
8 miles/minute


Who can rollerblade faster—Jenny, who can go 50 m in 30 s, or Jack, who can go 60 m in 40 s?
Jenny
Jack
They travel at the same speed.
It is impossible to tell with the information provided.

2007-12-20 01:32:58 · 4 answers · asked by haleser3 3

simplfy
3(a+2)-5

2007-12-20 01:23:47 · 8 answers · asked by venom 3

5-5
Solve each equation by using square roots property
2)x squared -12x + 36 =25
4)9x2squared-24x+16=2
Find the value of c that makes each trinomial a perfect square. Then write the trinomial as a perfect square.
8) x squared-12x+c
Solve each equation by completing the square

10) xsquared + 3x -18=0
12) 2x squared- 3x-3=0
14) x squared+2x+6=0
Solve each equation by competing the square
16) x squared +4x+4=25
18) x squared-9x+81/4=1/4
20)x squared +8x+16=7
22) x squared +12x +36 =5
Find the value of c that makes each trinomial a perfect square then write it as a perfect trinomial square
24) x squared + 16x+c
26) x squared -5x +c
Solve each equation by completing the square
28) x squared -8x+15=0.
30) x2 +2x-6=0
32) 2xsquared +3x-5=0
34) 2x squared +7x +6=0
36) x squared-4x +5=0
38) x squared-10x+28=0

2007-12-20 01:10:33 · 8 answers · asked by Anonymous

please help

2007-12-20 01:07:06 · 4 answers · asked by Purple_babi 1

what does it mean when your learning about domain and range when it says next to a graph

"The domain of F(x) is x -6"

or if it says

"The range of F9x) is x -6"?

i do not understand on a graph what it means....o.o

oh, its algebra 2 if that helps anyone

2007-12-20 00:38:47 · 4 answers · asked by sand_illusions 4

An example of a continuous injection from a rectangle in R^2 to R (a point, of course, is not considered a rectangle, or it'd be trivial).

And continuous bijections, are they posible?

Thank you

2007-12-20 00:04:30 · 2 answers · asked by Marcos 1