Mathematics - 6 July 2007

2007-07-06 23:35:13 · 7 answers · asked by Bemo 1

1. A house was sold at a gain of 10%. Had it been sold for Rs. 3000 more the gain would have been 15%. find the cost of the house?

2. If the cost price of 20 eggs is equal to selling price of 25 eggs. Find the loss percentage?

3. In 4 years Rs. 6000 amounts to Rs. 8000. In what time will Rs. 525 amount to Rs. 700 at the same rate?

2007-07-06 23:04:44 · 3 answers · asked by Anonymous

person A puts up wallpaper in the bedrooms of a house in 3 hrs. person B can do the same job in 4 hrs, and person C can do the same job in 12 hrs. if all three of them work together, how many minutes will it take them to put up the wallapaper?

2007-07-06 21:25:08 · 5 answers · asked by phattylovesphood. 2

This is about odd and even functions. How do I know if an equation is odd or even or neither?

Right, if even, f(-x)=f(x), and if odd, f(-x)= -f(x)

What exactly does that mean?

Can you please give the complete solutions to these 2 items and briefly and clearly explain your answer. We have a quiz on Monday and I still don't get this lesson.

1. f(x) = 3x^3+2x
2.f(x) = IxI

Also, another question.

How do you find the domain of I3x-2I and how would it differ from 3x-2?

Whoever will make me end my frustration of not understanding this shall be chosen to have the best answer.

2007-07-06 20:51:19 · 5 answers · asked by anonymous 4

If the eqn x^4-4x^3+ax^2+bx+1=0 has four positive roots , the ordered pair (a,b) is

(1)(-4,6)

(2)(6,-4)

(3)(-2,-3)

(4)(-3,2)


what does ordered pair means here ?
i dont understand this term in this context.

the equn has 4 roots that i believe ..........what does ordered pair means here ?

somebody ,plz explain this question

2007-07-06 20:46:23 · 5 answers · asked by calculus 1

2007-07-06 20:01:57 · 14 answers · asked by Digby 3

N=121212..........upto 300 digits .

whats the remainder when N is divided by 999?

(1)12

(2)121

(3)216

(4)666

How to solve this type of problem ?

2007-07-06 20:01:07 · 5 answers · asked by calculus 1

because im in high school and i dont really understand odd and even functions

2007-07-06 18:14:59 · 3 answers · asked by migz_mercado 2

Can someone please help me? I can't figure out what and how to get this answer.

3/8 + p = 1/2

2007-07-06 18:10:28 · 9 answers · asked by Robin 4

In my stats class, we're looking at estimates, internal estimations of population mean, confidence interval, etc. I'd like to find a real life example on the net that will show how estimates can be unreliable. Any thoughts?

2007-07-06 16:57:28 · 2 answers · asked by Anonymous

A Coin is unique in that the outer edge is gold while the inside is silver. Assuming both sides of the coin are identical, and a line tangent to the inner circle is 23 mm from edge to edge of the coin, and excluding the edge of the coin in the calculation, what is the surface area of gold on the coin, in square millimetres? Please round up to the nearest square millimetre.

2007-07-06 15:50:21 · 5 answers · asked by Anonymous

2007-07-06 15:24:57 · 5 answers · asked by michael 1

I really can't understand this concept at all, but especially this problem. Can you not only show me how to do it, but explain why you do what you do - please ?

f(x) = 2x g(x) = x+7

(f of g)(2) = ?

2007-07-06 15:12:57 · 5 answers · asked by dishbaby2003 1

Evaluate the following and be sure to use proper units.

44 ft/sx1 mi/5,280 ft x 3,600 s/h

This is has totally stumped me I have gone over my lesson plan and I am just lost!!! Please anyone I need some guidance!

2007-07-06 14:57:04 · 3 answers · asked by teenysfashion03 3

Pi is calculated by a converging asymptotic function,

But what I would like is a method to calculate PI one decimal at a time, let's say 3 then 3,1, then 3,14 then 3.145 etc.

Is there a way to calculate PI like this ?

2007-07-06 14:32:43 · 3 answers · asked by Chief Justice 1

2007-07-06 14:29:54 · 7 answers · asked by adan r 1

2007-07-06 14:22:26 · 2 answers · asked by Robert C 1

2007-07-06 14:14:56 · 10 answers · asked by adan r 1

Homer has three investments totaling $110,000. These investments earn interest at 4%,6%,and 8% respectively. Homer's total income from these investments is $7200. The income from the 8% investment exceeds the total income from the other two investments by $800. Find how much Homer has invested at 4%?

2007-07-06 14:12:37 · 3 answers · asked by kimmeez 1

Ask your friend to guess a number, and then ask her to:

Multiply it by 5; add 6 to the result; multiply the result by 4; add 10 to the result; and then multiply the result by 5.

Now ask your friend to tell you the result. The result should always end with 70 in the least significant positions (e.g.: 370, 570, 1270, 45670, etc...).

Scratch the ‘70’ from the last two digits and subtract one from whatever is left. That would be the number your friend had guessed! For example, if the result is 2370, the number she had guessed is 22 (23 -1), if the result is 470, the number is 3 (4-1), and so on.

Note: if the result does not end with 70, you know that she has made a mistake in her calculations!

1. Why are the two least significant digits are always 7 and 0, respectively.
2. Why can you come up with the guessed number if you subtract 1 from the left over number after scratching 70?

2007-07-06 13:59:18 · 4 answers · asked by BJ G 1

2007-07-06 13:46:05 · 6 answers · asked by steve d 1

A jar contains 76 coins consisting of dimes and quaters, worth a total of $13.90. How many dimes are in the jar?

2007-07-06 13:36:02 · 9 answers · asked by *05* 1

Hey! So here's my problem,
I want two shirts from Limited Too in the clearance section. One shirt costs $9.99 and the other costs $14.99. I have two coupons that can save 25% on my entire purchase. Which is a better deal, use one coupon for both shirts, or use one coupon for one shirt, and another coupon for the other shirt. Please tell me the prices of both deals..

Thanks.. If you need any other details, just say so.

2007-07-06 13:35:08 · 13 answers · asked by Anonymous

A plane flies 1,480 miles in 4 hours, with the wind. On its return trip, it took five hours flying against the same wind to go 1,150 miles. How fast will the plane have flown without any wind?

2007-07-06 13:34:18 · 3 answers · asked by *05* 1

Tyler is an 81.6% free throw shooter, and in tonights game he took 10 free throws. What is the likelihood he would make.....8 free throws? 9 free throws? 10 free throws? 7 or less free throws?

2007-07-06 13:30:47 · 3 answers · asked by Brian B 2

how much is 25% off $9.99
and 25% off $14.99

thanks.

2007-07-06 13:19:26 · 12 answers · asked by Anonymous

Two cards are selected at random from a standard 52-card deck without replacement. Find P(first is a diamond and the second is not a face card).

2007-07-06 12:53:52 · 3 answers · asked by Mega 1

It is assumed that the man never dies. He just sits and rolls a single dice over and over again for eternity. Is there a limit to how many times the number six will occur in a row? If so what is that limit?

2007-07-06 12:35:02 · 6 answers · asked by question asker 5

not sure how to do this, I have never seen it with a number after the sign only a zero.....


x+1/x-1 <_ 3

this problem reads as x+1 over x-1 is less than or equal to 3

the answer given is x<1 or x greater than or equal to 2

2007-07-06 12:30:35 · 4 answers · asked by kimmeez 1

2007-07-06 12:21:55 · 15 answers · asked by *dirty ghetto kids *"DGK&qu 1