Mathematics - 21 June 2007

2007-06-21 16:36:23 · 10 answers · asked by mschantell07 2

X - 2y + 3z = 10

2 x - 3y + 8z = 23

-x +3y - 2z = -9

2007-06-21 16:19:11 · 3 answers · asked by roninshinobix 1

The radii of 2 circles have the ratio of 1:2, what is the ratio of the area of the larger circle to the smaller circle??

2007-06-21 16:05:42 · 6 answers · asked by Lisa 4

An investment of $31,500 was deposited in a certificate of deposit. The CD offered 4.75% compounded semi annually. The investment will remain in the CD account for 10 years. What is the maturity value of the investment?

2007-06-21 16:05:25 · 4 answers · asked by jmelee85 5

I'm not quite sure how to do this problem.

x^-6y^-2/z^-5

What do you do after you reach
1/x^6*1/y^2*z^5

2007-06-21 15:58:23 · 5 answers · asked by MRBrocks 1

2007-06-21 15:57:33 · 6 answers · asked by Anonymous

my book says ,

(n-3)*(n-2)*(n-1)*n*(n+1)*(n+2)*(n+3)

is always divisible by 7!

is it correct ?

please comment on it .

2007-06-21 15:49:29 · 15 answers · asked by calculus 1

Write the equation so that y is a function of x.

1. 8x + y = 14
2. -9x + 3y = 18
3. 4x = -2y + 26

2007-06-21 15:43:51 · 6 answers · asked by sailorsoccer07 1

(1) Simplify into radical form:

(48x^3y^7)^1/2

(2) (9x^3)^1/2 / x^-2 . Simplify

(3) Solve exactly.

logx with base 3 + log5 base 3 = 2
(I hope i wrote that right or can it be written log base 3 (x) + log base 3 (5) =2.

Please help if you can. Thank you very much.

2007-06-21 15:42:15 · 4 answers · asked by stlcurtain_1 1

Given the parobola y=(x+4)^2 - 2. Find the vertex and axis.

2007-06-21 15:37:33 · 5 answers · asked by stlcurtain_1 1

The numerator of a rational expression is 144 less than the square of a number, and the denominator is 19. If this expression is equivalent to 12 more than the same number, determine the possible values of the number

2007-06-21 15:23:56 · 4 answers · asked by Anonymous

problem link:

http://i181.photobucket.com/albums/x85/ctti_3/untitled-2.jpg

2007-06-21 14:57:44 · 4 answers · asked by tc 1

2007-06-21 14:47:58 · 3 answers · asked by brittany c 1

can anyone help me with just two problems? here theyare:

4x2 - 8x + 16 = 0
1

2

4


x2 - 6x + 5 = 0
9

7

6


thanks so much for all of your answers!!

2007-06-21 14:45:01 · 3 answers · asked by Anonymous

This is an Algebra 2 question. If anyone knows, thank you in advance!!

2007-06-21 14:34:12 · 2 answers · asked by Girlie 3

y= (2x-3)^7

u= 2x-3

y= u^7

Find the derivatives of the simpler functions

d/dx= (2x-3)2 Where did the 2 come from at the end?

d/du= (u^7)

Apply the chain rule and simplify

dy/du x du/dx

=(7u^6)(2)
=14u^6
Am I missing some notes here becauce jupming from here to here doesn't make sense. The (2x-3) just disappears?
= 14 (2x-3)^6

2007-06-21 14:29:27 · 4 answers · asked by Anonymous

How high is 167 cm in feet and inches? for ex. like 5' 5'' etc.

2007-06-21 14:13:17 · 6 answers · asked by Anonymous

having problems understanding how to figure out the LCM of real numbers.
Have heard multiple ways of solving, but they are all blending together.
Whats the easiest way you know how to find the LCM

2007-06-21 14:10:43 · 7 answers · asked by Mercury 2010 7

I've tried doing this problem but i'm having some problems however, I know the answer is a fraction. Please show me how to solve it.

64^2x = 16 ^x+1

2007-06-21 14:09:13 · 6 answers · asked by Maven 2

If x - 4(c + 2) = y, what is c + 2, in terms of x and y?

(A) (y + x) / 2
(B) (y + x) / 4
(C) 2y + 2x
(D) (y - x) / -4
(E) (y - x) / -2

2007-06-21 14:04:39 · 5 answers · asked by Anonymous

Can someone show me how to use the quadratic formula with these problems?? thanks a billion!!

question #1:
2x2 + 4x = -1

question #2:
2x(x + 2) = 5

thank you soo much for everything!!!

2007-06-21 13:57:49 · 5 answers · asked by Anonymous

solve this equation using the quadratic formula: x^2 - 6x+8=0

Thank you

2007-06-21 13:50:13 · 4 answers · asked by quepid622 1

1. 8z^2 + cz + 35 = (4z + 7) (2z+5)
what is the value of c

2. (a^2 + 6a + 9) / (a^2 - 9)

3. (1/x) + (1/y)

4. length 2x^2+10
width x^2+2x+2
find the perimeter

2007-06-21 13:34:58 · 1 answers · asked by edge0125 1

what does x equal?
how would you solve this problem?

it doesnt make sense to me. help please!!!!

2007-06-21 13:26:52 · 3 answers · asked by Anonymous

2007-06-21 13:25:50 · 7 answers · asked by Scythian1950 7

http://math.msu.edu/%7eglashow1/E3_US07.pdf

For 7a

how did they get the (.5 $/toothbrush x 100 toothbrushes)

For 7b

How did they get ($50)(23 + 1/2(7))

2007-06-21 13:17:07 · 1 answers · asked by sofly523 1

How can I use my calculator to solve a log?

For example:

log[base 3] 9^2

2007-06-21 13:16:48 · 7 answers · asked by slow_math 1

I'm having trouble figuring out this equation. It's been too long. I need to know how you solve for x on this equation. Please be specific. Thank you.


(2.32x)/(x-2) - 3.76/x = 2.32

2007-06-21 13:00:32 · 5 answers · asked by curtisjb1983 2

Evaluate ∫2cos^2 x dx

I've gotten an answer, but I'm not 100% sure about it. Any help is appreciated :)

2007-06-21 12:55:20 · 3 answers · asked by Corian 2

pls help me.. i'm so confused coz its a larger number

2007-06-21 12:54:24 · 4 answers · asked by Yer 1