Mathematics - 11 July 2007

2007-07-11 05:26:48 · 12 answers · asked by Anonymous

2007-07-11 05:19:27 · 35 answers · asked by WEBCAM 1

If r = 4 m and h = 9 m, find the volume of the right cylinder .

2007-07-11 05:17:56 · 4 answers · asked by Anonymous

The base of a triangular prism is an equilateral triangle with a perimeter of 42 cm. If the height of the prism is 10 cm, what is the lateral area?

2007-07-11 05:15:14 · 4 answers · asked by Anonymous

What is the formula to calculate percentage???? in Excel?????????????????

2007-07-11 05:10:44 · 5 answers · asked by Anonymous

Find the average slope of this function on the interval ( -2 , -1 ).

By the Mean Value Theorem, we know there exists a c in the open interval ( -2, -1 ) such that f ' (c) is equal to this mean slope. Find the value of c in the interval which works

2007-07-11 05:07:13 · 3 answers · asked by Anonymous

x = 2*arccos((G-3)/3) - sin(2*arccos((G-3)/3)

if it helps, G must be between 0 and 6. Any help would be greatly appreciated.

2007-07-11 04:56:59 · 4 answers · asked by dbaum295 2

Can someone confirm what the derivative of

e^1/x

is, and how it is derived?

2007-07-11 04:48:53 · 4 answers · asked by Anonymous

I just need help with these 3 problems.

1. If the United States imports increased 20% and exports decreased 10% during a certain year, the ratio of imports to exports at the end of the year was how many times the ratio at the beginning of the year?
A) 12/11
B) 4/3
C) 11/8
D) 3/2
E) 2

2. If it takes Mark twice as long to earn $6 as it takes Carl to earn $4, what is the ratio of Mark's pay per hour to Carl's pay per hour?
A) 2:1
B) 3:1
C) 3:2
D) 3:4
E) 4:3

3. The ratio of the arithmetic mean of two numbers to one of the numbers is 3:5. What is the ratio of the smaller number to the larger?
A) 1:5
B) 1:4
C) 1:3
D) 1:2
E) 2:3

2007-07-11 04:26:58 · 6 answers · asked by Anthony W 2

Solve ea. of the following systems by substitution. Can some please help me and show me how to work? Thank you.

1. 5x – 2y = -5
y – 5x = 3

2. 8x – 4y = 16
y = 2x – 10

3. 4x – 12y = 5
-x + 3y = -1

2007-07-11 04:26:21 · 10 answers · asked by associates07 1

I have a few math questions? Someone please help me.?




thank you so much in advance, I didn't get a chance to go over all these and really needed some help. No I am not trying to get someone to do all my work for me, i have already completed ,ost of it, just some of the ones I was stuck and taking a lot of time.

Additional Details

9 minutes ago
Thank you everyone, been so helpful and no one tried to be rude! Cool. Some more I am now stuck on:

1) Combine like terms:
-3x2 + 8x – 7x2 + 9 + 2x – x2 + 11

2) Solve for x:
5x – 12 = 4x + 5

3) Solve for x:
-3(4x + 3) – 2 = 7 – 2x + 3

4) Solve for x:
(x + 3)/4 – 3/2 = (x + 4)/8

5) please help me with translating this to an algebra statement; you don't have to solve:
Twice the difference of seven times a number and four yields the same result as the same number increased by six.

2007-07-11 04:14:13 · 12 answers · asked by princessmommy05 2

3 MEN GO INTO A MOTEL. THE MAN BEHIND THE DESK SAID THE ROOM IS $30, SO
EACH MAN PAID $10 AND WENT TO THE ROOM.

A WHILE LATER THE MAN BEHIND THE DESK REALIZED THE ROOM WAS ONLY $25, SO
HE SENT THE BELLBOY TO THE 3 GUYS' ROOM WITH $5.

ON THE WAY, THE BELLBOY COULDN'T FIGURE OUT HOW TO SPLIT $5 EVENLY
BETWEEN 3 MEN, SO HE GAVE EACH MAN A $1 AND KEPT THE OTHER $2 FOR
HIMSELF.

THIS MEANT THAT THE 3 MEN EACH PAID $9 FOR THE ROOM, WHICH IS A TOTAL OF
$27, ADD THE $2 THAT THE BELLBOY KEPT = $29.

WHERE IS THE OTHER DOLLAR?

2007-07-11 04:02:35 · 14 answers · asked by Barron L 1

2007-07-11 04:00:58 · 9 answers · asked by seahawk_1614 1

5 coefficent of sqrt 2 * 2 coefficient of sqrt 18 - I can't figure how the process works with this. The answer is 60, but how was that done? I'd appreciate a demonstration. Thanks!

2007-07-11 04:00:55 · 0 answers · asked by ♫ ∫aoli 4

find the solutions for the ff: (value/s of x)

1) sqrt of (2x + sqrt of 7x+x) = 3
2) 4th root of x + 2 sqrt of x = 3

2007-07-11 04:00:25 · 1 answers · asked by rock-onz 1

2007-07-11 03:59:16 · 6 answers · asked by seahawk_1614 1

If the garden box has dimensions x by x feet and an area in square feet equal to the perimeter in feet, what is the value for x that satisfies the requirements? (Hint: The box is a square.)

2007-07-11 03:52:03 · 9 answers · asked by Anonymous

(1+sin2x) dx

the sin 2x should be sin squared x

2007-07-11 03:11:40 · 4 answers · asked by Raymond L 1

2007-07-11 02:53:13 · 14 answers · asked by Anonymous

2007-07-11 02:23:12 · 17 answers · asked by Anonymous

2007-07-11 02:22:27 · 6 answers · asked by irish i 1

2007-07-11 02:21:46 · 2 answers · asked by irish i 1

3x^2+5x-12=0
factorize please and say why u did wat
im doin somthing wrong thnx
i need two possible values of x i think

2007-07-11 02:16:13 · 7 answers · asked by Anonymous

li (x) = ∫ dt / ln t [x = 0, x]
Is there a formula of li (x) which is more readily to be input into a calculator?

2007-07-11 01:59:31 · 3 answers · asked by Anonymous

I want to get my dog desexed & it will cost $88. But I am entitled to one third discount off that price. I'm not very good with maths.
It doesn't sound like it would be much.
Please help!
Thank-You!

2007-07-11 01:50:21 · 8 answers · asked by oh sugar! 4

Solve the following equations by factorisation.
Practice these Easy questions with your working that should not excced 10minutes. "Practice makes perfect!"

Q1) x^2 + 15x + 54 = 0
Q2) x^2 - 26x + 133 = 0
Q3) 2x^2 - 5x + 3 = 0
Q4) 3x^2 - 5x + 2 = 0
Q5) 3x^2 - 13x - 16 = 0

2007-07-11 00:26:32 · 8 answers · asked by Anonymous