Mathematics - 11 October 2007

is it -5/8 ?

2007-10-11 07:06:14 · 13 answers · asked by shawna 2

simplify the following

a) 15p - 12 - 7p + 3
b) 8s + 8 + 3t - 5 -10s +7t
c) 7x + 2y - 4z + 3x - 5y - 2z
d) 15 x a x b x c
e) 7y x 4w
f) 7p x -2q x 3q

Expand these sums below

g) 5(7x + 8 )
h) 8(s + 3t - 5 )
i) 3a( 2a+7 )
j) -10x( 2x + 5 )

2007-10-11 07:05:24 · 12 answers · asked by Anonymous

4 apples out of 154 apples equals what percentage?

2007-10-11 07:05:15 · 9 answers · asked by Volcano4coast 1

2007-10-11 06:56:48 · 5 answers · asked by Anonymous

2007-10-11 06:56:26 · 2 answers · asked by Anonymous

2007-10-11 06:53:54 · 4 answers · asked by Anonymous

i am doing the fencing problem maths coursework

2007-10-11 06:53:31 · 10 answers · asked by Anonymous

I am having trouble solving these 2 problems - I get the first part of the answer right, but am stumped on how to get the rest of it. Please help!

1. 7-5r^2+r^4 / r^2-4


2. (2a^2-42a+54) / (3a+9)



Thank you!!!!

2007-10-11 06:49:15 · 1 answers · asked by higherlovetx 5

If an intravenous solution contains 4 percent mannitol how many milliliters of the solution should be administered to provide a patient with 80 grams of mannitol?

2007-10-11 06:45:45 · 4 answers · asked by whisper2ya 2

150 grams is dissolved in enough water to make 500 ml of the solution what is the persentage strength of the solution?

2007-10-11 06:42:56 · 1 answers · asked by whisper2ya 2

i get x = 1/3 is that correct or is it negative

2007-10-11 06:38:57 · 7 answers · asked by shawna 2

How do you find all possible roots of this equation and how do you find zeros? Im home sick with mono with no one to ask.
2x^4-x^3 -2x^2+5x+1

2007-10-11 06:32:18 · 4 answers · asked by Anonymous

The length of a rectangular solid is twice the width, and the height is three times the width. If the volume is 162 cubic meters, find the surface area of the solid. Show all work.

2007-10-11 06:27:07 · 5 answers · asked by Cakes L 1

A driveway 30 feet long and 18 feet wide is to be paved with blacktop 4 inches thick. How much will the blacktop cost if it is sold at the price of $175 per cubic yard? Show all work to receive credit.

2007-10-11 06:26:33 · 5 answers · asked by Cakes L 1

∫2dx/(x² -1)

2007-10-11 06:14:36 · 2 answers · asked by Anonymous

Is it because the derivitives of different constants are zero such that if P(x)=0, the zero can be sent to more than one function when going the other direction? How do I know it's onto?

2007-10-11 05:59:30 · 2 answers · asked by Fred 1

Here it is:

3654 times 84739 divided by 667483292 subrtact 489678745864764647862656346 plus 3746465382B plus 8458473589794375947 to the 475845874390848th power, if B=83637525.84763839474562353679543674656897532

2007-10-11 05:55:09 · 6 answers · asked by Alan W 1

its an identity. Ive been tryin 4 ages but I cant find a way??? any help please??

2007-10-11 05:54:17 · 3 answers · asked by cool guy 1

relative to origin O

OA = (-1, 3, 5) OB = (3, -1, -4)

ON = ( 5, 1, -3)

The line L passes through A and is parallel to OB. the point N is the foot perpendicular from B to L


L = (-1 , 3, 5) + t ( 3, -1, -4)

length BN is 3.

how to find the equation of the plane containing A, B & N?


Thanks

2007-10-11 05:48:02 · 4 answers · asked by Mystic healer 4

∫xlnx dx

Please look at this picture
http://img529.imageshack.us/img529/6642/49348752qi6.jpg

b=1 and a=0

2007-10-11 05:48:01 · 5 answers · asked by Anonymous

9a^3-225a=0

i assume you factor out the 9, so it becomes

9(a^3-25)=0

but then what?

2007-10-11 05:47:44 · 8 answers · asked by Anonymous

Give the solution:

2x-5y=5
10x-5y=20

I think there may be no solution but keep coming up with different alternatives. Please helllllllllllllp!!

2007-10-11 05:44:36 · 9 answers · asked by It's a girl due 5/11/09 4

2007-10-11 05:38:03 · 3 answers · asked by Leaf on the Wind 4

PROBLEM # A: 1 = -2-(4-W)
W = -2-1-(4)
W = -2-1-4
W = -7
This is how I proved it:
1 = -2-(4-7)
1 = -2-(-3)
1 = -2+3
1 = 1

Here is the next one
PROBLEM B: 4-(1+X) = 5
4-1-X = 5
-X = 5-4+1
-X = 1+1
-X = 2
X = -2
This is how I proved it:
4-{(1+(-2)} = 5
4 - (1-2) = 5
4 - (-1) = 5
4 + 1 = 5
5 = 5

Please answer in following manner :
PROBLEM # A: Correct or Incorrect and Why?
PROBLEM # B: Correct or Incorrect and Why?

Also has anyone ever solved an Algebra problem quite this way?

(No Assumption Please!!!) Thanks for your time.

2007-10-11 05:37:50 · 8 answers · asked by GQ 2

2007-10-11 05:34:07 · 3 answers · asked by Anonymous

-20a^3+15a+13a^2


thanks. I am stuck on this one!!

2007-10-11 05:29:36 · 5 answers · asked by Anonymous

What are the rational zeros of this polynomial and what is the factor with the zeros?

2007-10-11 05:17:58 · 2 answers · asked by Anonymous

(x^4 + 4x^3 + 5x^2 - 2x - 8) divided by (x + 2)

2007-10-11 05:15:27 · 2 answers · asked by Anonymous

im working on a worksheet and i dont understand any of these questions and they have to be eith "always, never, or sometimes" CAN YOU HELP!?

2007-10-11 05:13:35 · 7 answers · asked by ♪Distressing_You♪ 1

2007-10-11 05:00:56 · 5 answers · asked by archangel 1