Mathematics - 17 October 2006

equation:
log x + log (x + 15) = 2

I know since the equation doesn't give a "base" it is assumed as 10. So the next step would be to change this log equation into an exponential equation but how do I solve for "x" when the equation is x^2 + 15x=100 ? maybe my exponential equation is wrong. Thanks for your help.

2006-10-17 10:31:48 · 5 answers · asked by shih rips 6

use the distrubitive property to rewrite the expression without parentheses.

2006-10-17 10:27:08 · 16 answers · asked by Cookie Gurl 1

2006-10-17 10:26:28 · 3 answers · asked by Sara D 2

i heard that every bar code number on every product all over the world by way of secret coding amount to 666 is it true

2006-10-17 10:25:35 · 14 answers · asked by trucker 5

I am in eighth grade and am in an advanced algebra class but if I don't learn the distributive property I'm going to get ANOTHER F on the next quiz.

2006-10-17 10:17:18 · 12 answers · asked by chompizikstan 2

2006-10-17 10:09:54 · 29 answers · asked by Anonymous

Please show the work so I can learn instead of just getting the answer.

Thanks.

2006-10-17 09:56:31 · 7 answers · asked by crazylifer 3

lim x^2 - 4
x->-2

would that just be 0? or I have to clear it in a such way that it doesnt gives me 0 as answer?

2006-10-17 09:51:18 · 8 answers · asked by Anonymous

Consider a cube composed of (n^2) unit cubes. If we paint the surface of the composed cube, some of the unit cubes may have no sides colored and some may have more than one side colored. Using (n), classify the cube breaking down how many of each type of unit cubes there are.


NOTE: You have two jobs. The first is to consider different sized cubes, such as for n=1,2, etc. Next for each of these sizes give the categories determined by the unit cubes and determine the number of unit cubes in each category.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Show the solution...

2006-10-17 09:48:04 · 2 answers · asked by Anonymous

Please tell specifically WHAT you do and HOW...
because i have to do many more questions just like this one!
THANK YOU!

2006-10-17 09:44:34 · 2 answers · asked by rachel123go 3

"Define variables and write a function that describes each situation.

a. You drive on an interstate highway with your cruise control set at 65 MPH and do not need to stop or alter your speed.

b. You rent a small moving van to move your belongings to your new apartment. The rental company charges $45 a day plus $0.22 a mile to rent the van."

Please explain too.. thanks!

2006-10-17 09:41:29 · 5 answers · asked by Brad 2

trying to help grandaughter with math homework.

2006-10-17 09:35:06 · 12 answers · asked by hun_eluv 1

A link to a good website is sufficient. =)

2006-10-17 09:31:22 · 3 answers · asked by Existentialism 2

How do you integrate sin^3xcos^3x. I keep during it but getting a weird answer. I wnat to check if I have the right answer or the book does. What substitutions would you use, like sinxcosx= 1/2sin2x ? Please help, midterm is tomorrow.

2006-10-17 09:28:20 · 5 answers · asked by frostxd 1

ok, so I wondered if anyone knows an easier way to find derivatives for Polynomial functions without using the instantaneous speed formula. I know, the formyla is no big deal... but this would save time...
Thanks,

2006-10-17 09:17:59 · 2 answers · asked by That cute little thing 1

any square matrix into echelon form with all 1's along its main diagonal?

2006-10-17 08:58:30 · 2 answers · asked by Choad McChump 1

i really need this for my maths homework. plz help!!

2006-10-17 08:51:00 · 10 answers · asked by Anonymous

2006-10-17 08:50:59 · 5 answers · asked by ftoumeh79 1

2006-10-17 08:48:51 · 12 answers · asked by Anonymous

A car travels 120km at a certain speed. If the speed had been 10kmh faster, the trip could have been made in 2h less time. Find the speed.

2006-10-17 08:44:28 · 7 answers · asked by Anonymous

do u know there is a grid and i need to work out the 20th rectangle
it starts on the (1,1) and the coner of the firs number is (4,1) the coner of the second rectangle is (7,3) and the coner of the third is (10,5) so i need to work out the coner of the 20th rectangle plz help im really stuck on it HELP HELP HELP!!!!!!!!!!!!!!!!!!!!!

2006-10-17 08:06:20 · 4 answers · asked by kittypretty 1

5/8 - 75/120

2006-10-17 07:58:33 · 8 answers · asked by momoftwins1986 1

Three salesmen goes to Las Vegas. They arrive at the hotel and each of them has to pay $10 each for the night. Later the manager comes by and says they have a special going on this weekend. He told the receptionist to take $5 and devide it between the three salesmen, they paid too much. The receptionist then goes to give them the $5 and thought "It's too difficult to devide $5 between three, I'm gonna keep $2 and give them each $1 back". If he gives back each salesman $1, hom much did each pay for the night? What is the total of the three all together? Now plus the $2 the receptionist kept? What happened to the other dollar?

2006-10-17 06:54:30 · 2 answers · asked by Moonfairy 2

2006-10-17 06:40:38 · 10 answers · asked by Cute B 1

Suppose that X is an uncountable set and d is any metric on X
which produces the discrete topology.
(such a metric d does not have to be a constant multiple of the discrete unit metric!)
Show that for some e>0 there is an uncountable subset A of X
such that d(x,y)>=e for all x,y in A.

2006-10-17 06:38:07 · 1 answers · asked by KYP 1

i need tough question on maths
as i m preparing for iit
is there any good and useful site on net related to this.

2006-10-17 06:36:10 · 8 answers · asked by NITISH K 2

2006-10-17 06:34:32 · 8 answers · asked by Anonymous

"In the cytoplasm the typical (ATP)/(ADP)(P) ratio is 5.53 x 10 squared. Calculate the delta G (free energy change) required to synthesise ATP in the cytoplasm". My problem is that I dont see how 5.53x 10squared is a ratio. Once I understand that I may e able to finish my assignment. I asked my tutor but he didnt explain it any clearer. HELP!!!

2006-10-17 06:30:07 · 22 answers · asked by sparkyy2k2001 2

2006-10-17 06:26:43 · 5 answers · asked by mustang.pass 2

A ramp leading to a building has an incline of 4.5°. The length of the ramp is 50 m. How high is the ramp and what is the horizontal length?


and if you can also help with this one as well
b)Solve the following triangle, given ÐX = 90°, y = 2.5 cm and z = 8.3 cm

2006-10-17 06:23:44 · 5 answers · asked by Anonymous