Mathematics - 16 August 2007

2007-08-16 14:09:51 · 5 answers · asked by Alexis A 1

Solve for y. x + 5y = 15

2007-08-16 14:09:19 · 10 answers · asked by too_b2000 1

2^5x*16^1-x=4^x-3

2007-08-16 13:58:32 · 3 answers · asked by patrice cadet5 1

2x-2a=0
2y-a=0
-2x-y+z+9=0

I know that x=2y and y=a/2 and x=a. Z is the variable that is causing me trouble.

2007-08-16 13:53:21 · 6 answers · asked by Anonymous

1/6, what are the two numbers? I do not understand this question, help...

2007-08-16 13:47:26 · 8 answers · asked by Anonymous

These are the equations that I need to solve.

1. b x 3^a = 400
3a - 2b =12

2.At Hungry macs, 3 hamburgers and 2 thickshakes cost $11.65. If 2 hamburgers and 5 thickshakes cost $ 12.90, what is the price of a hamburger?

Any help is much appreciated thanks.

2007-08-16 13:42:52 · 2 answers · asked by Anonymous

if not, then please help me

2007-08-16 13:40:46 · 3 answers · asked by CAN777 1

What is the mass of an object that occupies a volume of 4.5 cm^3, and has a desnity of 19.3 g/cm^3?

2007-08-16 13:36:52 · 2 answers · asked by Anonymous

2007-08-16 13:32:33 · 5 answers · asked by CAN777 1

I am having trouble with the pattern for 1, 1/2, 1/3, 1/4...

What do I have to do with the number to get the next term?

I thought it would be +1 to the denominator, but the problem has to be adding, subtracting, dividing, or multiplying a number to get the next term and I can't figure it out.

Can anyone help me out?

2007-08-16 13:32:12 · 4 answers · asked by disneygirl 2

16^n=8^n+1

2^2n=1/16

What is the first step to solving any exponential equation?

2007-08-16 13:28:38 · 2 answers · asked by patrice cadet5 1

If x(2) + x =20, what are the values for x that will make the equation true? My book states that answer 1 is correct, I think my book is wrong and I have the right answer the GED book gives these possible choices
(1.) -5 and 4 (book claims this is the right answer)
(2.) -5 and -4
(3.) 5 and 4
(4.) 5 and -4
(5.) Not enough information is given

I think the answer would be 25 and -5 in order = 20
Am I correct and is the book wrong? Please help me. This is driving me nuts.

2007-08-16 13:26:25 · 4 answers · asked by Anonymous

(kg)(x) = ?

Given: k(x) = x^2 +5
Given: g(x) = sqrt (x-3)

Also, if f(x) is {(3,5)(2,4)(1,7)}, what is 1/(f(x))?

2007-08-16 13:21:44 · 3 answers · asked by Dilbert 2

I've read the whole chapter on this, and I can't figure out how to figure out the equation show by this graph.

Here's a picture of the graph: http://img136.imageshack.us/img136/7967/picture1td7.png

It's multiple choice, but I'm not going to post all the choices on here because I don't want people to just pick a random one.

If you answer, please EXPLAIN your answer.

I will say that in all the answers, it's something "=4"

Meaning, to the right side of the "=" sign it just says "4", so hopefully that will give you an idea of what my teacher is looking for.

THANKS!

2007-08-16 13:20:31 · 2 answers · asked by jamie68117 3

List the following measurements from largest to smallest:

a) .50 m
b) 5000 mm
c) .05 cm
d) 500 km
e) 10 cm

2007-08-16 13:14:37 · 9 answers · asked by Caramel 2

2007-08-16 13:13:46 · 2 answers · asked by Anonymous

An octagon has area 80 cm2 and shortest side with length 5 cm. A similar octagon has shortest side of length 4 cm. What is the area of this similar octagon? Include all work and any formulas used in your answer.

ps its not a test for those of you who think i need to do my own work..it a just for fun paper

2007-08-16 12:58:36 · 3 answers · asked by Alexa N 1

Please Show How U Did It

2007-08-16 12:57:02 · 2 answers · asked by Anonymous

the direcctions say use the domain of rational numbers....help please!!! and if anyone knows any real helpful algebra math websites i'd greatly apprecitae it =)........i got -1.5 but i dunno if thatt right?

2007-08-16 12:41:08 · 13 answers · asked by duuuude 2

Please Show How U Got The Answer

2007-08-16 12:36:45 · 5 answers · asked by Anonymous

4x^2-21x-18

2007-08-16 12:35:17 · 4 answers · asked by NEpatriots12 2

P varies joinly as h and v^2. When h=7 and v=2, P=140. Find P when h is 12 and v is 5.

2007-08-16 12:17:58 · 2 answers · asked by Tiff 1

2007-08-16 11:54:27 · 8 answers · asked by aero_lover001 1

) 2/(4x^2+1)=?
(

2007-08-16 11:20:49 · 3 answers · asked by ali k 1

I NEED HELP?????
directions>>Rewrite each expression using the inverse operation.

72+18=90

12*9=108

100-34=66

56/8=7

2007-08-16 11:20:34 · 6 answers · asked by Anonymous

a boat can travel 5 miles uptream and 5 miles downstream in a total of 6 hour. If the speed of the current is 2mph, what is the speed of the boat in still water?

2007-08-16 11:06:40 · 4 answers · asked by kim s 1

Please show work

2007-08-16 11:05:53 · 9 answers · asked by coolkid 1

How can i check this qwestion quicly

y=-2x^2 +8 -6 i got x=-0,5 and x=1,5

Iwanna see if got a good answer need to make a quick check

2007-08-16 11:02:01 · 2 answers · asked by Anonymous

(5x)(8x^3)(x^4)
(x^7)^3
(4a)^2
{2p^3v^4}^3 / s^3
35m^16n^8 / 7m^15n^4
3x^6 / x^3

2007-08-16 10:53:52 · 3 answers · asked by Thomas N 2

6/5 x + 4/10 x =32/10 I need a step by step answer please.

2007-08-16 10:47:32 · 6 answers · asked by hojoann 1