Mathematics - 9 December 2007

Opps! I just asked this question but I forgot an x! Well please show the work so I can try to get it and if you have something to say like do your own homework please keep it to yourself! Thanks =]

2007-12-09 11:05:11 · 4 answers · asked by Anonymous

8th grade Algebra 1.
Ok, here is the problem:

Write the equation of the line passing through the point and perpendicular to the given line.

(5,2) , y= -1/2x + 4

The answer in the book is y=2x-8

I don't understand how they got that answer and I don't get what to do. Help!!

2007-12-09 10:50:04 · 2 answers · asked by Anonymous

Given ln 2 = 0.693, ln 3 = 1.099, and ln 5 = 1.609, for which integers between 4 and 10 (include 4 and 10) can natural logs be found using only four function calculator? List the logs and show work.

ex. ln 4 = ln (2*2)

2007-12-09 10:19:03 · 2 answers · asked by Anonymous

f(x)= √x
g(x)= 1/(x-2)

2007-12-09 10:18:41 · 1 answers · asked by Anonymous

How would you solve these equations by factoring and applying the zero-product property?

1) x^2-256=0

2) 6x^2-x-1=0

3) 7x^2-2=5x


How would you use factoring and the zero product property to the find the zeros of these quadratic functions?

1) 2x^2+3x-5

2) 2x^2+3x-2


Thanks so much. I'm sorry I keep asking questions I'm just having a ton of trouble with math this year.

2007-12-09 10:17:00 · 1 answers · asked by Anonymous

I'm sorry about all the math questions but I just don't get math! If you leave an answer please show the work with it so I can try to understand it! Thankss =]

2007-12-09 10:05:53 · 6 answers · asked by Shawnaa =D 2

3. For f(x)=2x-11, find f(2)

2007-12-09 09:58:45 · 9 answers · asked by ashley n 1

After Mr. Stingy died, his lawyer read the will to his family. He left half of his estate to his wife and $50,000 to his son. The remaining fortune was to be split in this way: half of what remained went to his caddy, half of what remained after that was set aside for the care of his pet iguana, and the remaining $8,000 went to his favorite charity. What was the value of Mr. Stingy's estate?
______________________________________________
I kno the answer is 124,000 [i think]
but can anyone tell me the steps to solve it, or how they solved the problem.

and if its not too much, what are the variables?

2007-12-09 09:54:52 · 11 answers · asked by BahamaBabi 1

i need it before 12/10/07

2007-12-09 09:45:06 · 1 answers · asked by Intellectual 1

Benj can travel 6 mi downstream in his canoe, with the current in the same amount of time he travels 2 mi upstream against the current. If the speed of the current is 2mph, find the average rate of the canoe in still water.

Answer is 4 mph, but i dunno how to set this up)

2007-12-09 09:40:36 · 2 answers · asked by Anonymous

The domain is all real numbers but I need the range. HELP!!
f(x)= -x^2 +3x-5

2007-12-09 09:36:09 · 4 answers · asked by Sponge 3

I'm studying for a math test and can't figure out this question.

at a recent election where 5,222 votes that were cast for 4 candidates. then Victor exceeded his opponents by 25,33,and76 votes. find the number of votes received by each candidate.

2007-12-09 09:29:34 · 6 answers · asked by thinkpink020 1

a) 2.7 ft
b)8.8 ft
c)13.2 ft
d)132 ft

2007-12-09 09:27:56 · 7 answers · asked by Anonymous

Very important I find this out!

2007-12-09 09:26:27 · 3 answers · asked by Anonymous

[1/(x-1)]+[1/(x+1)]
all over
[2/(x-1)]-[1/(x+1)]
equal to 1

2007-12-09 09:20:25 · 1 answers · asked by Olivia 2

- 11/5+w=-4/5

What does w equal??? Its my last question and I cant get it... My calc sucks lol help!!!!!!!!!!!!

2007-12-09 09:20:22 · 7 answers · asked by Anonymous

what is the difference between the too

2007-12-09 09:11:53 · 1 answers · asked by Anonymous

the length of a rectangle is 4 more than twice the width. the area of the rectangle is 52.08 square feet what are the dimensions

2007-12-09 09:10:14 · 4 answers · asked by corndog 1

2007-12-09 09:05:18 · 10 answers · asked by galaal13 3

20+x/x= 6/5

please!

2007-12-09 09:03:12 · 6 answers · asked by Anonymous

2007-12-09 08:46:30 · 1 answers · asked by jack b 2

see the pic it
please help i need this
http://img527.imageshack.us/my.php?image=maxareauf7.png

2007-12-09 08:45:11 · 1 answers · asked by The Answer 3

basically, Barb pulled the plug in her bathtub and it started to drain. the amt of water in the bathtub as it drains is rep. by the equation L= -5t^2-8t+120, where L rep. the number of liters of water in the bathtub and "t" rep. the amt of time in min, since the plug was pulled.

1.How many liters of water were in the bathtub when barb pulled the plug?

2. To the nearest tenth of a min., the amt of tieme it takes for all the water in the bathtub to drain.

I used Axis of symmetry(-b/2a)
any more tips of formulas plz help
Thanks in Advance,
~*God-Bless*~

2007-12-09 08:32:14 · 3 answers · asked by modelgyal91 2

2007-12-09 08:30:48 · 5 answers · asked by Mandy P 1

If f(x)=log (base a) x, show that f(x^a)=a f(x)

2007-12-09 08:28:25 · 2 answers · asked by star baller 360 5

t^2 + 4t + 11=0

2007-12-09 08:18:26 · 5 answers · asked by *TiNK* 3

x + y = 3
x +y= -1

A)one
B)none
C)infinite

x+2y=4
x+2y=-2

A)one
B)none
C)infinite

thank you in advance for your help. i am stuck.

2007-12-09 08:14:00 · 2 answers · asked by melannie21 2

I found this problem really hard to solve, plz if u know how to do help me out by showing ur working for every single step:-

1) The line p has gradient 2/3 (two thirds) and passes through the point (6, -12). The line q has gradient -1 and passes through the point (5,5). The line p meets the x - axis at A and the line q meets the x-axis at B. Work out the gradient of the line joining the points A and B. (Remember there is only one gradient).

The right answer will get 10 points from me. Thnx a lot guys.

2007-12-09 08:04:33 · 4 answers · asked by varghese p 3

If f(x) = x^2 - 2x, then how would I graph f([x])? this is the absolute of the x on the inside of f(x).

2007-12-09 07:34:32 · 1 answers · asked by xo_girl88 1

A particle moves along a line so that at any time t, its position is given by x(t) = 2pi + cos 2pi t

1. what is the velocity?
2. what is the acceleration?
3. What are the values of t is the particle at rest?
4. what is the maximum velocity?

2007-12-09 07:29:17 · 3 answers · asked by xo_girl88 1