Mathematics - 23 September 2007

2007-09-23 12:11:53 · 9 answers · asked by Anonymous

if it is please tell me

2007-09-23 11:54:52 · 4 answers · asked by Anonymous

write the augmented matrix of each system of equations

{4x1 - x2 + 2x3 - x4 = 4
{ x1 + x2 + 6 = 0
{ 2x2 - x3 -4x4 = 5

can explain this numbers behind x's are small i couldn't figure out how you make them small?

2007-09-23 11:50:15 · 6 answers · asked by w s 3

2007-09-23 11:50:04 · 9 answers · asked by babby_bear30_99 1

solve the system for a,b,and c and write an qeuation for the parabola.

please help me on how to figure out a problem like this!!

2007-09-23 11:49:20 · 1 answers · asked by Joe 1

1. the square root of -42 times the square root of -6
2. the square root of -16/25
3. the square root of -8/3

2007-09-23 11:45:09 · 5 answers · asked by roth 1

to mow the lawn with the help of two people

2007-09-23 11:42:15 · 10 answers · asked by Anonymous

write the augmented matrix of each system of equations.

{2x - y - z = 0
{x - y + z = 1
{ 3x - y = 2

can you explain in detail how you solve this?

2007-09-23 11:39:58 · 4 answers · asked by w s 3

You know when u type in alt and some numbers you get a symbol usually on the keyboard. for example, alt: 2024 is this Φ. What would the symbol for exponent be? alt: ?

2007-09-23 11:20:39 · 3 answers · asked by Grid 7

I'm totally lost on these problems- please help if you can!!

1. Show that there is some number "c" with 0
2. For what real value(s) of b will the piecewise function g(x)= x, if x<0 and bx^2, if x is greater than or equal to 0
be continuous at every x in R?

2007-09-23 10:59:30 · 1 answers · asked by carbonatedcolor 2

i need a good interactive website that will show me step by step instructions on how to do problems

2007-09-23 10:56:17 · 2 answers · asked by dw 1

Needing some more help with Algebra, I'm almost finished.

-^3√64

Note this is a cubed root.

2007-09-23 10:52:54 · 4 answers · asked by Ozzie 3

find f o g and g o f and find the domain of each function and each composite function in interval notation

f(x)= absolute value of x, g(x) = 2x^3

f(x) = 1/x, g(x) = x + 3

f(x) = 3/x^2-1 ,g(x) = x + 1

2007-09-23 10:48:39 · 1 answers · asked by mike p 2

I am given an angle of a triangle. The angle is 32º 42'. What does the 42' mean?

2007-09-23 10:41:17 · 14 answers · asked by <('_')> 4

Can I get some help with this Algebra problem. I would greatly appreciate it.
Simplify. √20/5 - 1/√5

2007-09-23 10:20:12 · 9 answers · asked by Ozzie 3

limit x^2 (x+1)^3 / (x-2)^2 (x-4)^4
x=>2


How do i solve this??

2007-09-23 10:20:07 · 2 answers · asked by goodygoody 1

2007-09-23 10:14:15 · 2 answers · asked by Anonymous

Okay R+14 equals 39, I figured that much out. But whats the value of R in the equation?

Yes I suck at math, yes my brain rejects it. Please help. Thanks in advance!

2007-09-23 10:13:15 · 10 answers · asked by Anonymous

Find two equations of the tangent lines to the curve below that are parallel to the line x - 2y = 2.

y = (x-1)/(x+1)

2007-09-23 10:10:55 · 6 answers · asked by Anonymous

0.2x^2+1.2=3.4

-3.31662

but i only have 4 blocks of answers i could put there.
am i wrong.

(x+3)(x-3)=16-2x^2
my answers is
5
---
√3
how am i wrong

2007-09-23 10:10:38 · 6 answers · asked by hola_kity2008 1

first off, is finding the one to one the same as finding the inverse, and if so, how do I find if this is a one to one.

f(x)=(sqrt x-2)/(x-3)

some detail explanation would be great, because I am a little lost.

2007-09-23 10:08:38 · 3 answers · asked by D 2

I dont get what i a binary system i have to reasearch it but i can't find helpful sites. I'm talking bout the binary system dealing with space not the one with math. so please help Thankz
----J<3B

2007-09-23 10:00:06 · 2 answers · asked by RiiCaN MaMii 1

homework. answer asap thanks

2007-09-23 09:48:03 · 4 answers · asked by Anonymous

Find the largest interval on which the function f is increasing and the largest interval on which f is decreasing.

f(x)=-(x+10)^2

2007-09-23 09:45:37 · 1 answers · asked by Anonymous

In our study, we are measuring the effect of exercise on muscle fibre size and neural control. The STUDY group (sample size 20) will have certain parameters measured before the exercise and then, the same parameters will be measured after the exercise. Thus the data will consist of pre-exercise values and post exercise values. If the participants are within the normal distribution curve of the population (healthy, adults), is it required to have a CONTROL group?

2007-09-23 09:45:23 · 1 answers · asked by Anonymous

Function: f(x)= (x^2)-2x-7

1) Find all intercepts of the graph of f (Please include all steps especially when finding x)
2) Express the function f in standard form
3)Find the vertex and axis of symmetry

2007-09-23 09:42:55 · 3 answers · asked by Anonymous

1. Let f be a function defined by f(x){ |x-1| + 2, for x < 1, ax^2 + bx, for x (greater than or equal to) 1 where a and b are constants.
a. If a = 2 and b = 3, is f continuous for all x?
b. Describe all values of a and b for which f is a continuous function.

2. Let f be a function defined by f(x) = (2x-2)/(x^2 + x - 2).
a. For what values of x is f discontinuous?
b. At each point of discontinuity found in part(a), determine whether f(x) has a limit, and, if so, give the value of the limit.

2007-09-23 09:40:12 · 1 answers · asked by CG 1

Ya heres the sad part im in high school and in my algebra book it always said something like, "Closure property: For all "REAL NUMBERS" a & b!" It uses the term real numbers constantly but i dont know what it is. Please help! Thanks!

2007-09-23 09:35:10 · 10 answers · asked by Anonymous

Hello,

I am still trying to understand the concept of derivatives conjoined with limits. I believe the answer is true (I'm more than likely wrong), but does anyone have an explanation for it on the basis whether it's true or false.

Thanks.

2007-09-23 09:33:01 · 3 answers · asked by Anonymous

C= 5 (F+32) solve for F
*** 9

*** 5 equals five ninths
*** 9

2007-09-23 09:27:53 · 6 answers · asked by Halle 2