Mathematics - 19 December 2007

please help!!

2007-12-19 12:07:13 · 43 answers · asked by Anonymous

When solving algebraic equations, why is it necessary to follow the rule "What you do to one side of the equation, you must do to the other side"?

2007-12-19 11:56:56 · 7 answers · asked by Stephiiex3 1

2007-12-19 11:52:51 · 4 answers · asked by TaylorMade85 2

1/6, 5/21
4/9, 15/36

how do i solve those..please please please help i need this done by tomorrow and i have 5 other worksheets in math to finish...so please help..and be detailed...

2007-12-19 11:50:39 · 7 answers · asked by Anonymous

alright, so i have this story problem. i hate these.

water freezes at 32 degrees fahrenheit (or 0 degrees celsius) and boils at 212 degrees fahrenheit (or 100 degrees celsius). write a linear equation that models the temperature in degrees fahrenheit (F) in terms of the temperature in celsius (C).

i can't find the relation between them :(
thanks!

2007-12-19 11:49:39 · 3 answers · asked by k4y14hhh 2

x-2y OVER 8 = 1/2
and
3x+2y=4

My teacher didn't even go over this, so can someone explain it to me?

2007-12-19 11:41:13 · 8 answers · asked by Anonymous

-3x + y = 7

6x -2y = -14

--------------

-3x + y = 7

y = 7 + 3x

6x -2(7 + 3x) = -14

6x - 14 + -6x = -14

0 = 0
Or is that many solutions?

2007-12-19 11:34:51 · 9 answers · asked by Anonymous

Factor completely. Then choose the correct answer
(^=to the power of)

v^2 – 25

the answer can be

(v – 5)^2
or
(v^2 – 5)^2
or
(v + 5)(v – 5)
or
(v – 5)(v – 5)


i appreciate it tons!!

2007-12-19 11:19:36 · 8 answers · asked by Anonymous

x+2(x+4)=1+3(x+2) i think i understand it, but when i complete i end up with 7=8, is it possible not to be able to solve this kind of equation? don' t be mean, im not that stupid, i swera

2007-12-19 11:07:03 · 6 answers · asked by Anonymous

sqrt(1-2x)+sqrt(x+5)=2

2007-12-19 11:02:33 · 5 answers · asked by fmontes92 2

I saw on the internet that some people use Pi as their X values an others use numbers, but in my math class, my teacher uses degrees. I'm not sure what to do, or which one is right, or which is actually easier. Can anyone help me? Thanks.

2007-12-19 11:02:08 · 4 answers · asked by Anonymous

( ^ = to the power of )

8x^3-4x^2y^3-12xy/4x^2y^2

the answer can be

2xy-y- 3x/y ; y doesnt = 0
or
2x/y -y -3xy ; y doesnt = 0
or
2x-y- 3/xy ; x&y dont = 0
or
2x/y -y- 3/xy ; x&y dont = 0



thank you im sorry if this is confusing but im confused to lol :)

2007-12-19 10:48:13 · 2 answers · asked by Anonymous

Prove that the ratio AB:AC:BD is constant, and what is it?

2007-12-19 10:44:40 · 3 answers · asked by ? 3

Please Help me solve this equation. Im thinking double angles are used.

2007-12-19 10:33:52 · 4 answers · asked by Abel T 2

Ok Question:
Clue 1) When divided by 4 you get a remainder of 4.
Clue 2) My number has 2 digits and both numbers are even.
Clue 3) The sum of the digits is 10

What number am I?

2007-12-19 10:20:00 · 13 answers · asked by angeldaimon15 1

There are several problems here if you can help me with any of them it is greatly appreciated!!
1) in 1980 the average price of a home in buckeye county was 90 000$. By 1986 the average price of a home was 114 000$. Which of the following represents the price of a home,P, in buckeye country in terms of the year,t? let t=0 correspond to 1980.
The answer is P=4000t +90,000 <-How do i get that answer

2)The intensity ,I, of light received from a source varies inversely as the square of the distance, d, from the source. If the light intensity is 2 foot candles at 11 feet, find the light intensity at 19 feet (round answer to nearest 100th)
The Answer is .67<-How do i get that?

3)find the dimensions of a rectangle whose perimeter is 30 feet and whose area is 56 square feet.
The answer is: 8ft. by 7ft <-how do i get this?

2007-12-19 10:19:02 · 3 answers · asked by cutie123 3

Factor. Then check by multiplying the factors. If the polynomial is not factorable, then choose "prime" as your answer.
( ^ = to the power of )

w^2 + 20wm + 96m^2

it can be

(w + 8m)(w + 12m)
or
(w + 4m)(w + 24m)
or
(w + 6m)(w + 16m)
or
prime

2007-12-19 10:13:52 · 7 answers · asked by Jen C 1

im supposed to make a frequency table and i dont know how to make one so that people will look at it and know what i spend my hours doing. pleez help!

2007-12-19 10:04:33 · 1 answers · asked by spidergurl 4

x^3 - 6X^ 2

2007-12-19 10:00:10 · 2 answers · asked by sana_ahmad75 1

log4a+log4b
log3m-log3n
3log5 2x
log3r+log3s+log3t
3log2r-2log2s
1/2(log10x-log10y)

2007-12-19 09:57:55 · 2 answers · asked by Anonymous

2007-12-19 09:44:55 · 3 answers · asked by bmosby2 2

what's the domain and the range of the function?

2007-12-19 09:42:34 · 4 answers · asked by hmm 3

I use to know this, but haven't done it in a long time and now forgot.

The problem:
Find the number of sides of a convex polygon if the measure of its interior angles have a sum of 32,040 degrees.

If you could explain it too, that would be great.

--THX!

2007-12-19 09:35:19 · 3 answers · asked by æ 1

2007-12-19 09:26:13 · 6 answers · asked by Matt 1

how do you write this in slope intercept form

2007-12-19 09:19:59 · 17 answers · asked by answertron 1

I need to make sure I have the right answers for the values of these trig functions. Help?

I'm supposed to find the values of the trig functions for the negative angles, and rationalize the denominators.

Can you help please?

Thanks!


1. cos ( - 150 degrees)

2. cot ( - 330 degrees)

3. sin ( - 135 degrees)

Make sure to remember that they're negative. Thanks so much!

2007-12-19 09:19:51 · 3 answers · asked by zenmaster4 2

with the inverse variation forula, solve for k using the point (5,4). then, write the equation of the direct variation.

2007-12-19 09:10:29 · 1 answers · asked by #1 padres fan 3

I have to divide x + 2 into f(x) = x^3 + 9x^2 + 7x + 3 and then write my answer in the form given by the Division Algorithm; x^3 + 9x^2 + 7x + 3 = q(x)(x+2) + r(x) for some polynomials q(x) and r(x).
How do I do this?
Thanks very much!

2007-12-19 09:09:39 · 2 answers · asked by Anonymous

I had to do write these triangle inequalities and now i have to add them up, but I'm not sure how.

PY+PY>XY
PY+PZ>ZY
PX+PZ>XZ

What does that add up to be?

Thank you for your time.

2007-12-19 09:09:36 · 1 answers · asked by asdasdasdasdasdasdasdasdadasdads 2

with the direct variation forula, solve for k using the point (-4,8). then, write the equation of the direct variation.

2007-12-19 09:08:53 · 1 answers · asked by #1 padres fan 3