Mathematics - 22 December 2007

The dimensions of a rectangle are 2x + 1 and x - 1. if each dimension is increased by 2 units, write and simplify an expression that represents the increase in area.

2007-12-22 23:43:25 · 5 answers · asked by Anonymous

5^y-1 = 25^2y-1

4^2t + 1 = 8^2t - 1

6^3x + 5 = 36^3x + 6

2007-12-22 23:40:00 · 3 answers · asked by Anonymous

Hey, this isn't homework I'm studying for my A-level exam in January and don't understand this type of question and can't ask my teacher because we're off school. I would use simultaneous equations but there's 3 unknown variables.

The curve with equation y=ax^2 + bx + c passes through the point (1,2). The gradient of the curve is zero (0) at the point (2,1). Find the values of a,b,c.

I'd appreciate it if you even told me HOW to go about it without necessarily providing an answer.

2007-12-22 23:07:09 · 4 answers · asked by Anonymous

The cost of an adult ticket to a football game is $1.75. The cost of a student ticket is $ 1.25. Total receipts last week from ticket sales were $ 1700. If the number of students tickets sold was twice the number of adult tickets, how many of each type were sold?

Thank you for your help

2007-12-22 22:33:36 · 6 answers · asked by Anonymous

5a) 4/x+3 plus 5/4x + 12

B) 1/3y-15 minus 2/y-5


Merry Christmas

2007-12-22 22:11:43 · 3 answers · asked by Anonymous

Is this right? Or is there a better way to find co-ordinates? It was the only way I could think of to do it, since it has to form a square, ABCD.

http://s221.photobucket.com/albums/dd223/azuradragonfly/?action=view¤t=maths1.jpg

2007-12-22 21:13:45 · 3 answers · asked by azuradragonfly 1

if u r given 'n' rods of length{1,2,3,4.....n} respectively.
what is the maximum no. of triangles that can be formed using these rods at a time?
one rod can be used only once.........
for example if n=5 , the max. no. of triangles formed will be 1..........using the combination(3,4,5)

2007-12-22 18:53:50 · 6 answers · asked by azhariitk 1

Do you consider maths as a science subject?

2007-12-22 18:32:09 · 12 answers · asked by swapnil_kmaps 2

find teh distance between (7,2) (-5,3)

2007-12-22 18:31:36 · 6 answers · asked by God Bless America!~ 4

if there is a large room, and there was 15 tables in that room, and 4 chairs at each table, how many chairs is there all together?

2007-12-22 17:29:59 · 15 answers · asked by Anonymous

2007-12-22 17:27:25 · 8 answers · asked by Hayabusa 3

2007-12-22 17:21:40 · 15 answers · asked by Hayabusa 3

3A =............and........ 1/2B =
(3 -6),................ ( 1.5 3)
(9 0).................. ( 0.5 -2)

a) Find the matrices A and B, then compute the matrix, 0.5A-3B

2007-12-22 16:40:55 · 3 answers · asked by tony2007 2

A home-based company produces both hand-knitted scarves and sweaters. The scarves take 2 hours of labor to produce, and the sweaters take 14 hours. The labor available is limited to 40 hours per week, and the total production capacity is 5 items per week. Write a system of inequalities representing this situation, where x is the number of scarves and y is the number of sweaters.

2007-12-22 15:48:26 · 5 answers · asked by kingtekrin 2

If you have a rate that is constant would dr/dt equal 1 or 0?

2007-12-22 14:09:45 · 8 answers · asked by belizeable 4

2007-12-22 14:03:08 · 8 answers · asked by ☆♥ C&ice♥☆ 2

ok iv bin haveing alot of trouble with math since i moved to a new school...everything seams harder so can someone please explain this math problem to me??

-(-(-4.7))

what dose the -(-(- mean
and the )) after the problem
and how do i solve it?? please dont give the answer to the problem i dont want people to think im just trying to get an answer i just want to know what the problem means and how to solve it.

im so confused please help...

2007-12-22 13:47:18 · 14 answers · asked by Anissa B 2

2007-12-22 13:46:14 · 3 answers · asked by LOUANN E 1

do we know with certainty that it is right? does our mathematics fail in some instances?

2007-12-22 13:31:17 · 10 answers · asked by Anonymous

..volume, total surface area , total length of the edges and the number of vertexes of a solid cube of side x unit is always a perfect cube.....? please help..

2007-12-22 13:27:18 · 5 answers · asked by jje92 1

Hi i have two equations and want to work out how to get from one to the other, but im abit stuck.

ANy help appreciated

zevB = mv2/r
(the two is a squared sign)

z, e, v, B, m, v, r are all variables (im doing mass spec equations)

i need to turn that equation into

m/z = r2B2e/2V

(here the r and B are squared, but the V is two V)

Thanks

2007-12-22 13:14:20 · 5 answers · asked by Anonymous

Does anyone hear know how to prove that 0.99999999999999999999999... = 1 with sequences and series? I used to remember but I cannot seem to find the answer anywhere. This isn't for a class or anything so please give a direct answer if possible. Thank you.

2007-12-22 12:31:09 · 9 answers · asked by Anonymous

Use the power rule and the power of a product or quotient rule to simplify the expression.
(4a)2

A 8a
B 16a2
C 8a2
D 16a


Simplify the following.
-5y0

A 0
B -4
C 1
D -5

Simplify the following.
(-6z2)(2z3)

A 12z6
B 8z5
C -12z5
D -12z6

2007-12-22 12:30:48 · 7 answers · asked by Anonymous

Use the power rule and the power of a product or quotient rule to simplify the expression.
(4a)2

A 8a
B 16a2
C 8a2
D 16a


Simplify the following.
-5y0

A 0
B -4
C 1
D -5

Simplify the following.
(-6z2)(2z3)

A 12z6
B 8z5
C -12z5
D -12z6

2007-12-22 12:30:15 · 6 answers · asked by Anonymous

if the world were square. what corner would you live in

2007-12-22 12:09:59 · 13 answers · asked by Anonymous

2007-12-22 12:06:01 · 17 answers · asked by Rachel T 1

2007-12-22 11:55:03 · 10 answers · asked by gimp g 1

I need a real world problem that uses the Pythagorean Theorem (c squared=a squared + b squared) for my math project.

2007-12-22 11:54:22 · 7 answers · asked by emilyemy45 2

Divide: 24m^4n^2-8m^2n^3+4m^3n ÷ 4m^2n.

2007-12-22 11:47:43 · 4 answers · asked by Anonymous

Okaii, i know this sounds silly, but me and my friend are having a serious problem with like a grade 2 question.
So heres the thing:
Altogether we both had 22 chocolates.
I had the odd numbers(including 1) and she had the even.
But when she was suppose to eat the 22d, she gave it to me.
How many did we each have?
Now, logically you would think the ratio is 10:12 but wouldn't that mean that i had TWO more then her? Because the difference between 12 and 10 is 2. But i only had one extra. If i hadn't ate one more, we'd have had the exact same amount. So that would mean i had one more.
But what every one is telling us is that i had 12. LIKE I SAID! THAT WOULD MEAN I HAD TWO MORE!
Wtf! This is a serious question as silly as it sounds, so please answer seriously.
Thanks!

2007-12-22 11:33:53 · 8 answers · asked by Kathy 1