Mathematics - 27 September 2007

without using calculator? I don't need a precise answer. Options of answer are given. The answer I'm supposed to get is 3.5 x 10^17

2007-09-27 14:39:02 · 2 answers · asked by bilbo 3

1--- 2x/3-4/x=5/3
2--- 1-5/x+6/x2/1-3/x
3----(5x+1)=x+9
4-----2xsquare-x-3 as the product of 2 binomials
5---Factor- 49-xsquare
6----(x/2-1)
OK THANKS Alot people

2007-09-27 14:36:19 · 1 answers · asked by Anonymous

0.33333333.......so what's that in fraction form?

2/12=0.1666...7...what's that in fraction form?

8/10=0.8 in fraction?

3/12=0.25...fraction?

12/5=..fraction?

2007-09-27 14:24:21 · 12 answers · asked by ALESANA 7

In a math problem, I had to simplify by combining terms. My questions was (3y+1)(-2)+y
In the end I got the wrong answer. I want to know:
(why) can I multiply the coefficient, 3, with -2 to get -6, even though -2 isn't followed by a y?
Please explain, I'm so confused.

2007-09-27 14:17:32 · 3 answers · asked by Karina 1

i am terible at geometry especially proofs does anyone kno a website where i could get extra help? Plz help me

2007-09-27 14:16:04 · 4 answers · asked by beauty beyond description 2

its a algrebra math question

2007-09-27 14:13:46 · 5 answers · asked by Anonymous

if you guys can help me with a step by step i may beable to finish the rest, please help and thanks! Please tell me about your process because i dont get L'Hopital's rule...

l i m (sin^2 x) / (x)
x --> 0

2007-09-27 14:10:44 · 2 answers · asked by iSmile 2

Related to Geometry

2007-09-27 14:07:29 · 3 answers · asked by Prasoon 1

if 1/2AB=1/2EF, then AB=EF. what property is that?

2007-09-27 14:04:03 · 2 answers · asked by Sarah S 3

2007-09-27 14:01:17 · 6 answers · asked by LuvNatalie 3

Factor Completely:

(a+b)^6 - (a-b)^6

Help me!!!
P.s. ^6 means raised to the 6th power

2007-09-27 14:00:26 · 4 answers · asked by Susan 4

2007-09-27 13:53:03 · 12 answers · asked by Jasmeen I 2

Determine y' when
y= x ^ (1/x)
y' = (y/ x^2) (lnx-1)
???
plz show me how

2007-09-27 13:47:55 · 2 answers · asked by Anonymous

When using a stair climber; Eric burns 9.6 calories per minute. When he walks on the treadmill, he burns 5.3 calories per minute. If Eric has 50 minutes to exercise and wants to burn 350 calories, how many minutes should he spend on each machine?

2007-09-27 13:42:28 · 2 answers · asked by dannielle 1

Solve each system of equations using matrices. If the system has no solution, say it is inconsistent.

{2x + 3y = 7
{3x - y = 5

Can you explain how you solve this so I understand? it is in the system of linear Equations: Matrix Method! I need it in row echelon form then give solution for y and x?

The solution of the system is x = 2 and y = 1

I just want to know how you solve this so you get the solution?

2007-09-27 13:33:06 · 3 answers · asked by w s 3

My best friend claims that the area of his hand does not exist because it cannot be found by any formula.

2007-09-27 13:31:31 · 3 answers · asked by Jeff 1

Albert spent all his money in 5 stores. In each store, he spent $1 more than half of what he had when he entered that store. How much money did Albert have when he entered the first store?

I have weekly Problem of the Weeks in algebra 1 class. My teacher lets us use ANY source at all. So technically, I am not cheating or anything by putting the question an yahoo! answers. I have tried to get the answer but I am really puzzled.

2007-09-27 13:27:21 · 3 answers · asked by Anonymous

an equation that has no solution is called?

2007-09-27 13:19:59 · 6 answers · asked by SH@WTY 1

find the solutions of the equation in the interval [0,2pi)

sinx/2-cosx=0

2007-09-27 13:17:47 · 2 answers · asked by devincr 1

when is the greatest common factor of two #'s one of the two #'s?Explain your resoning.

2007-09-27 13:14:58 · 5 answers · asked by Anonymous

2007-09-27 13:13:50 · 7 answers · asked by shawntae6513 1

The wave heights, h, in the open sea depend on the speed, v, of the wind and the length of time, t, that the wind has been blowing at that speed.
h=f(v,t)
What is the meaning of the partial derivatives (dh/dv) and (dh/dt)?

2007-09-27 13:10:00 · 3 answers · asked by Amelia 6

jen cleans the kitchen in 20 minutes, her brother ken does it in 12 minutes, but ben, her 2 year old brother, can mess up the kitchen in 10 minutes, how many minutes does it take three of them to clean the kitchen

2007-09-27 13:04:40 · 5 answers · asked by jennifer 2

the total amount of a certain drug diminishes in the blood exponentially. if a patient receives 20 mg at noon and it is known that only 12 mg remain at 8 pm,

A) write an equation for the amount of the drug remaining after t hours.

B) find the amount of drug remaining in the patient's blood at noon the next day

i really just need an explanation or guidance with A. i'm bad at math okay?! i've been absent so i'm doing the classwork (meant to be done with help of teacher/classmates) at home and so i'm just checking ha.

2007-09-27 12:57:35 · 2 answers · asked by helloosunshine 3

I can't find out how to get 4 with using 7 and 5. Thanks for any help

2007-09-27 12:56:38 · 4 answers · asked by norcalgrl87 1

its math homework!

2007-09-27 12:52:22 · 3 answers · asked by Valerie5_0 2

For our algebra unit in math, our teacher wants us to do the following....
Create a math equation based on REAL LIFE. it cant be made up, even if what you make up is something that can be real. you must go online or wherever and find it and turn it into an equation...it has to be real...my teachers examples are all mostly about sports, and for example, batting averages. i get how she gets the batting averages or average scores or whatever, but how do u turn it into an equation.....know what i mean? its kinda hard to explain but i rly hope sumone can help.

2007-09-27 12:50:22 · 5 answers · asked by Anonymous

2007-09-27 12:47:10 · 1 answers · asked by deannahndrsn 2

ok so i kno that standard form is ax + by = c

how woul di find the standard form of the equation of the line that passes through the oints (-5, 4) and (-8, -6)

2007-09-27 12:43:18 · 1 answers · asked by toriw94 1

A two-digit number is 7 times the sum of its digits. If the digits are reversed, then the new two-digit number is n times the sum of its digits, Find n.

Most thorough explanation gets the 10 =)

2007-09-27 12:33:49 · 3 answers · asked by Sunrayye 5