Mathematics - 1 September 2007

ok so i need help with math problems because i have no idea what the problems are asking me to do

its says write an equivalent experession
4+m
9y
3a+5

how to i write the equivalent problem? use different numbers move them around?
give direction and answers

also how to write using an exponential notation?

n times n times 2 times n times n

and 5 times c times c times ctimes c

thanx in advance

2007-09-01 23:00:03 · 5 answers · asked by heart 2

how do you simplify these problems im really confused

12/21

54/9

a/3ac

plz tell me how to? and plz if you could include the answer as well

2007-09-01 22:26:05 · 11 answers · asked by heart 2

Show that the triangle is either isosceles or right angled triangle.

2007-09-01 21:38:06 · 3 answers · asked by Anonymous

I have been asking for help in my math problems yet some people just answer that they won't answer or do my HOMEWORK even though it's not homework at all...They are too narrow minded I just wanna compare my answers to theirs...it's even tiring to type the questions in math especially exponents.

So, why is this site called answers.yaoo.com whenin fact people don't answer well...they even insult others instead of helping them. I just want to voice out my opinion. Thank you for listening.

2007-09-01 21:36:09 · 6 answers · asked by Anonymous

how do i solve limits that involve more than 1 variable eg limit of (x,y) ->(0,0) of (2x^2 * y) / (x^3 +4y^3)

2007-09-01 21:33:08 · 3 answers · asked by jon 1

X+Y=78
Y-X=20

x*ysquared

2007-09-01 21:32:23 · 4 answers · asked by ♥Come Break Me Down♥ 2

2007-09-01 21:02:12 · 10 answers · asked by Preethikrish 1

Please tell me the answer and how to do it!

I'm desperate!

"On a ferry crossing, three cars and two caravans pay £405, and seven cars and three caravans pay £795. How much would five cars and four caravans pay?"

2007-09-01 21:01:23 · 9 answers · asked by Hermione Granger 4

The manager of a large apartment complex knows from experience that 100 units will be occupied if the rent is 320 dollars per month. A market survey suggests that, on the average, one additional unit will remain vacant for each 5 dollar increase in rent. Similarly, one additional unit will be occupied for each 5 dollar decrease in rent. What rent should the manager charge to maximize revenue?

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The answer I got was 460 but that doesn't seem right at all.
Any help? Suggestions?
Thanks!

2007-09-01 20:55:15 · 4 answers · asked by Anonymous

2007-09-01 20:47:52 · 6 answers · asked by avenger 2

a) c^ + 2/c - 3

b)6/x + 2y

c)3/4x - 2y


I've read somewhere that a variable under the division bar, which is in the denominator, can not be a polynomial. I even don't know why. Help?

What about the letter c question, the variable "x" is located parallel to the division bar which is between the numerator and denominator. Is that still a polyomial?

2007-09-01 20:44:04 · 7 answers · asked by Anonymous

How many Milligrams are in a :
Teaspoon?
Tablespoon?

2007-09-01 20:39:58 · 4 answers · asked by Anonymous

pls show the steps

2007-09-01 20:34:34 · 3 answers · asked by Anonymous

pls show the steps

2007-09-01 20:32:24 · 4 answers · asked by Anonymous

Find the x- and y-intercepts of the graph of (x + 2y)(x - 2y) = 1 .

a. x-intercept 1, y-intercept 1/ 2 (2 is a squareroot)
b. x-intercepts ±1, y-intercepts ±1/ 2 (2 is a squareroot)
c. x-intercept -1 , no y-intercept
d. x-intercepts 1, no y-intercept
e. x-intercepts ±1, no y-intercept

2007-09-01 20:29:40 · 5 answers · asked by Anonymous

Find the equation of the circle with center (-1,7) and radius 2 .

a. x ^2 + 2x + y ^2 - 28y + 50 = 0
b. x ^2 - 2x - y ^2 - 14y - 48 = 0
c. x ^2 + 14x + 48 + y ^2 - 2y = 0
d. x ^2 - 14x + 48 + y ^2 - 2y = 0
e. x ^2 + 2x + y ^2 - 14y + 48 = 0

2007-09-01 20:26:06 · 2 answers · asked by Anonymous

What is the definition of proof? I would like to prove that square root 2 is rational,reaching to the conclusion that it's actually irrational instead, just to go through the process of proof because I don't understand what the book is telling me. We skipped the page but I believe I should go over it because it is important to go through the problem solving process.
book just gives unorganized steps and its not even details, i would like to put it in 2 colums like geometry. how can i do that?
assume that square root 2 is rational.
then square root 2 can be expressed as p/q where p and q are integers.

assume that p/q is in its lowest terms.

let p/q = square root 2

squaring p^2/q^2 = 2 (canceling out the root)
so p^2=2q^2

this is where i got lost... it said p^2 is even, then p must also be even so one can write
p=2m where m is an integer
4m^2 = 2q^2 (substituting p^2 = 2q^2)
2m^2=q^2
so q^2 s even and therefore q is even. but if both p and q are even then p/q is not low term

2007-09-01 20:25:57 · 4 answers · asked by Tanja 2

Determine which of the points (1,-1), (2,-2), and (-3,1) are on
the graph of the equation y (1 + xy) = 6 .

a. (1,-1)
b. (1,-1), (2,-2)
c. (2,-2)
d. (2,-2), (-3,1)
e. (1,-1), (-3,1)

2007-09-01 20:24:06 · 4 answers · asked by Anonymous

2007-09-01 20:16:02 · 2 answers · asked by Nap 1

2007-09-01 20:12:31 · 2 answers · asked by zyntax24 1

What is the sum of the measures of the vertex angles of a 27-sided polygon? My answer came out as 166.67 degrees. Did I use the right formula?

2007-09-01 19:12:34 · 3 answers · asked by Jen 4

how do u write in scientific notationn (150,000,000 km)?

2007-09-01 19:06:11 · 2 answers · asked by Anonymous

so i took calc 1 when i was a senior in high school and im a junior in college now...so i've forgotton some of the differentiation rules... my question is, when you differentiate e^x the answer is e^x, but what if you are differentiating e^(1/x)? do you follow the rule where you have d a^x/dx =ln(a)*a^x? Thanks!

2007-09-01 18:56:02 · 3 answers · asked by Anonymous

Simplify


(1/Square root of 50) Explain please!!

2007-09-01 18:30:40 · 4 answers · asked by x3ldonx 1

lim ( x/(x-1) - 1/ln(x) )
x->1

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secondly, can you take the limits separately?

2007-09-01 18:30:16 · 4 answers · asked by Eienstien's Ghost 1

P=2l+2w for w

2007-09-01 18:28:23 · 11 answers · asked by timer05 1

2007-09-01 18:27:50 · 9 answers · asked by mztana820 1

It say find 12 rays in this figure. But I obly found 10! Where's the other 2 rays? Help please.

Here's the figure:
http://www.fileden.com/files/2006/7/5/109983/help.jpg

2007-09-01 18:26:46 · 8 answers · asked by Anonymous

How do you solve this problem with the Quadratic Formula?

x^2 - 3x - 21 = 0

Anyone that can help is highly appreciated! Thanks!

2007-09-01 18:26:39 · 6 answers · asked by Kelly 3

2007-09-01 18:25:50 · 2 answers · asked by spirtworld41 1