Mathematics - 30 September 2007

(a) 15 workers take 6 days to assemble 3 cars. Find the number of workers needed to assemble 5 cars in 2 days.

Please explain and show your workings..Thanks...

2007-09-30 23:16:26 · 2 answers · asked by Anonymous

One Rectangular plate with length 8 inches breadth 11 inches and 2 inches thickness is there. What is the length of the circular rod with diameter 8 inches and equal to volume of rectangular plate ?

Ans: 3.5 inches

2. What is the Number of zeros at the end of the product of the numbers from 1 to 100.

2007-09-30 22:59:08 · 5 answers · asked by as 2

W + X + Y + Z = 2

W + 2X + 2Y + 4Z = 1

W - X + Y + Z = 6

W - 3X - Y + Z = 2

I need to know what numbers represent the variables above. Please explain in as detailed a way as possible, how you arrived at the numbers, whether by using a calculator, or by hand. I have a TI-86, so if you are familiar with that calc, please tell me how to solve this, in as detailed a manner as possible, using a 4 x 4 matrix.

I am more or less an Algebra newb, so please don't be afraid to break this down into as simple a form as possible. Thanks.

2007-09-30 22:55:12 · 2 answers · asked by ducatitodd 1

why do we need squaring and square root in the process of fnding the distance between two points.

2007-09-30 22:17:54 · 4 answers · asked by sajesh.k 2

H(x) = (4x^(2) + 5x^(-4))^3

H'(x) = ?

2007-09-30 22:16:37 · 2 answers · asked by Rrrr0001 1

How to prove the theorems:
1)The lines joining the midpoints of opposite sides of rhombus forms a rectangle.
and
2)The lines joining midpoints of opposite sides of rectangle forms a rhombus.

Thank you in advance.

2007-09-30 21:42:09 · 1 answers · asked by tanmyboy 2

1.What function is defined by P(x)=a (sub n) x^n + a(sub n-1) x^x-1 +.....a (sub 1) x+a?
2.Find the values of the constant A, B and C so that x(2x^3+7x-5)=Ax^4+bx^3+Cx^2-5x is an identity.
3. Given f(x)=x^4+4x^3+2x^2+x-3, find the remainder when f(x) is divided by x-1?
4. Factor 2x^3-5x^2-x+6 completely.
5. If (x+1) is a factor of a^2x^3+ax+2, find the value of a.
6. Draw the graph of y=x^3+x^2-2x by finding the x- and y- intercepts.
7. How many variations in sign are there in the polynomial x^4-5x^3+2x^2+4x-7?
8. How many roots does the equation 2x^8-7x^2-3x+1=0 have/
9. Give the complete set of possible rational roots of 2x^5-4x^3+7x+10=0.
10. What is m if x+3 is a factor of 3x^2+2x+m?

2007-09-30 21:36:37 · 1 answers · asked by jazz 1

The first is taken from a lyaponav equation. I can't see where the jump comes from? The apostrophe is shown as a dot in the original source, presumably a derivative. what do i need to use chain rule?? I'm lost.

2007-09-30 21:36:06 · 3 answers · asked by Paine 6

Approximate the area under the graph of, f(x)= e^(x/3) + 2. From x=0 to x=3 and above the x-axis using the left endpoints with n=4. Round the answer to two decimal place

2007-09-30 21:24:40 · 2 answers · asked by Nick 2

If (a+b)^1/2 = (a-b)^-1/2(negative), which of the following must be true?

A. b = 0
B. a+b = 1
C. a-b = 1
D. a^2 + b^2 = 1
E. a^2 - b^2 = 1

2007-09-30 21:21:54 · 7 answers · asked by Anonymous

Approximate the area under the graph of, f(x)= e^(x/3) + 2. From x=0 to x=3 and above the x-axis using the left endpoints with n=4/ Round the answer to two decimal places.

2007-09-30 21:16:58 · 2 answers · asked by Nick 2

2007-09-30 21:06:42 · 4 answers · asked by ndungupatoh 1

1. x^2+2x-2=0
2. x^2+10x+9=0
3. 2x^2+x-15=0
4. 2x^2+7x+3=0
5. x^2-10x-23=0
6. 4x^2-20x+25=0
7. x^2-6x+4=0
8. -3x^2+4x-12=0
9. -2x^2+8x=0
10. 2x^2+3x-20=0
11.3x^2-8x+3=0
12. 4x^2+20x+23=0
pls with complete solution....

2007-09-30 21:06:40 · 2 answers · asked by jazz 1

2007-09-30 20:59:21 · 3 answers · asked by khem 1

H (x) = (4 x^2 + 5 x^-4 )^3

H ' (x) =

2007-09-30 20:21:00 · 2 answers · asked by Rrrr0001 1

than the width. please help with this problem

2007-09-30 19:14:00 · 6 answers · asked by ShullyR 1

First, look up that "answered" riddle. So first, there is no method for giving a 100% chance of survival for the first prisoner to guess. His chances are always 50/50. What he can do, is pass information forward. But what information would be useful to ALL 99 other prisoners? None of the answers work yet.

It would be agreed that the last man in line would count the number of hats. If he saw and odd number of black hats, he would say his was black. If he saw an even number of black hats, he would answer white. They agree to this. He gives his answer and 50/50 is freed or not. Working forward, the next prisoner in line can then count black hats. If he sees a number that is opposite (as in odd vs even) to what the rear-most man reported, then he knows he has a black hat. Each person would then keep track of each time a person reported a black hat and would switch what their guess would be when it gets to them back and forth. Try it with 5 prisoners to see it work.

2007-09-30 18:48:16 · 4 answers · asked by Steve Euclid Gillberg 1

2007-09-30 18:47:39 · 5 answers · asked by Anonymous

If you were the teacher of a 5th grade classroom. How would you teach them the Pythagorean Theorem concept to students?
What type of manipulatives would you use ?

2007-09-30 18:25:32 · 6 answers · asked by Jeff 1

I need to find 2 consecutive odd integers whose sum is 116, and 3 consecutive even integers whose sum is 117. I have to write an equation, and solve each problem. If you could really help me I will choose you as the best answer.:)

2007-09-30 18:10:55 · 13 answers · asked by peterkarsai59 1

can someone please help me and if possible give me a step by step answer

2007-09-30 18:08:45 · 2 answers · asked by joemelle k 2

2007-09-30 18:01:05 · 11 answers · asked by Anonymous

what's the lcd? and plz solve plz

2007-09-30 17:46:29 · 8 answers · asked by super sonic* 3

9z^2-30z=-25

2007-09-30 17:44:32 · 8 answers · asked by MTak 2

sin (theta) = 0.6000

1. sin (pi - theta) = ?

How do you know where to start in quadrant?

2007-09-30 17:42:32 · 5 answers · asked by SUPERMAN 2

e^0.006x = 28

2007-09-30 17:23:46 · 5 answers · asked by finitemathkid 1

(1/2)to the power of -1. How would I graph y=(1/2)to the power of -1, -2, -3, etc.

2007-09-30 17:20:39 · 8 answers · asked by The Calculus Alchemist 6

1. ∀x∃y, x^2 + 1 = y^2

2. ∃y∀x, x^2 + 1 = y^2

3. ∀y∃x x^2 + 1 = y^2

I know what the symbols mean but when they are together determining x and y, it becomes very confusing for me. Can someone give a detailed explantation to me? Thanks!

2007-09-30 16:51:22 · 2 answers · asked by Brian S 1

2007-09-30 16:32:46 · 10 answers · asked by Anonymous

The number whose digits have a sum of 15 and a difference of 1. This number is not 8 less than 95.

Both digits are odd. The tens digit minus the ones digit is 4. Their sum is 10.

2007-09-30 16:27:16 · 4 answers · asked by Kim Possible 2