Mathematics - 18 July 2007

We came up with an answer, but the teacher says we are wrong, but he hasn't got an answer for us yet
He said he will give us an answer tomorrow...

The question is...

Write a formula for the charge, C, to send telegrams at a cost of 75 cents for the first 10 words and 5 cents each for N additional words.

I say its "c = .75 + .05n"

And he is saying that what if the telegram is 8 words or has 14 words total
Then it would be .75 + .05(14)
But we are telling him it would be .75 for the first ten and then .05(4) for the four additional words
But he is saying that it is not clear enough
Can somebody please find the correct answer or explain a way for my answer to be correct?
Thanks

2007-07-18 05:38:31 · 10 answers · asked by Zae Boogie 2

2007-07-18 05:34:08 · 8 answers · asked by Curtis H 1

2007-07-18 05:28:39 · 14 answers · asked by Book of Changes 3

40m x 55mm

2007-07-18 05:24:25 · 14 answers · asked by Isabel B 1

I need six numbers in a row that equal 171
I need all 6 number combinations available that would equal that number.

2007-07-18 05:22:54 · 2 answers · asked by Alyssa S 1

i m studying bscmaths. i m not able to understand the concepts .merely mugging the definitions n theorems will b f no use.is there any website which tells the exact meaning f mathterms with examples.

2007-07-18 05:10:10 · 2 answers · asked by ursikap u 1

2007-07-18 04:44:56 · 8 answers · asked by mishi khan 1

1: Write in interval notation: | x | ≥ 3
(-∞, ∞)
(-∞, -3] U [3, ∞)
[-3, 3]
No solution


2: Write in interval notation: | 2x | < 6
(-∞, ∞)
(-∞, -3) U (3, ∞)
(-3, 3)
No solution


3: Solve and write in interval notation: | x + 5 | ≤ 4
[-9, -1]
(-∞, -9] U [1, ∞)
(-∞, -1] U [1, ∞)
[-1, 1]


4: Solve and write in interval notation: | x | - 2 > 9
(-7, 11)
(-11, 11)
(-∞, -11) U (11, ∞)
(-∞, -7) U (11, ∞)


5: Solve and write in interval notation: | -3x | + 2 ≤ 8
[-2, 10/3]
[-2, 2]
(-∞, -2] U [10/3, ∞)
(-∞, -2] U [2, ∞)


6: Solve and write in interval notation: 2 + | x/3 - 1 | > 6
(-9, 15)
(-3, 3)
(-∞, -3) U (3, ∞)
(-∞, -9) U (15, ∞)


7: Solve and write in interval notation: -1 + | 1/3 - x/2 | > -11/12
(-∞, 1/2) U (5/6, ∞)
(-1, 7/3)
(-∞, -1) U (7/3, ∞)
(1/2, 5/6)


8: Solve and write in interval notation: | 3 - x | > 7
(-∞, ∞)
(-4, 10)
(-∞, -4) U (4, ∞)
(-∞, -4) U (10, ∞)

2007-07-18 04:22:47 · 3 answers · asked by alex h 3

Clarify me about the difference between sigma,integration&addition.

2007-07-18 04:14:19 · 7 answers · asked by dinesh 1

In April 1998, one US dollar was worth 128.65 Japanese Yen.
Jean Changed 20,000 Yen into dollars.
How much did she receive? give your answer correct to 2 decimal place.
SHOW ME THE WORK HOW YOU DO IT!!!

2007-07-18 04:01:48 · 10 answers · asked by Anonymous

/ stands for square root... product of square root of x times square root of x squared???

2007-07-18 03:55:45 · 7 answers · asked by Anonymous

and what comes after billion, and how many billions are in that. What comes after that, ect.

Please list as much as you can.

2007-07-18 03:55:03 · 13 answers · asked by Anonymous

Factor

2007-07-18 03:50:08 · 6 answers · asked by Anonymous

2007-07-18 03:21:10 · 4 answers · asked by Anonymous

2007-07-18 03:13:39 · 12 answers · asked by Nonaya 1

I have a summer hw, i don't know how to do this problem and i have to do 7 like it .. plz explain this to me so i can do the others.
A parametrization is given for a curve.
(a) what are the initial and terminal points, if any? Indicate the direction in which the curve is traced.
(b) Find a Cartesian equation for a curve that contains the parametrized curve. What portion of the graph of the Cartesian equation is traced by the parametrized curve ?
Is it right that the initial point is (1,0) and the terminal point is (-1,0)??
and i also have to graph it, i can do that by using a grapher but is there a way that i can do it without a grapher ??
Thanks soooooooo much

2007-07-18 03:00:59 · 3 answers · asked by thatisme 2

if 2 is next to 1
three is next to two
iv is next to iii
evif is next to ruof
.........
jack is next to 10 of (spades, hearts...)
black is next to_______?

2007-07-18 02:54:09 · 8 answers · asked by dee j 2

2007-07-18 02:52:16 · 3 answers · asked by conmenot 1

1) If it is now 1:30, what time will it be when the hour hand has moved through an angle os 20 degrees?
a) 1:45 b) 1:50 c) 2:00 d) 2:10 e) 2:15

2) 20 is what percent of C?
a) 20 C% c) (1/20C)% d) (200/C)% e) (2000/C)%

3)If n is an integer and n, n+1, and n+2 are the lengths of the sides of a triangle, which of the following could be the value of n?
I. 1 II. 3 III. 13
A) I only B) II only C) III only D) II and III only E) I, II, III

4)a bank raised the minimum payment on its charge accounts from $10 to $20 per month. What was the percent increase in the minimum monthly payment?
a) 10% b) 20% c) 50% d) 100% e) 200%

2007-07-18 02:28:19 · 6 answers · asked by Anonymous

A shopkeeper marks up a price to make a 30 % profit on the cost but allows 5% discount on cash terms. If he sells the article $247 on cash terms,find his actual profit and expres it as a percentage of the cost price of the article. Maths

2007-07-18 02:16:30 · 7 answers · asked by Anonymous

find the equation of the bisector of the pairs of acute angles formed by lines x-2y+1=0 and x+3y-3=0.

2007-07-18 01:43:07 · 6 answers · asked by yeah_boy 2

2007-07-18 01:35:31 · 4 answers · asked by yuleydis77 1

Suppose that the width of a rectangle is 5 inches shorter than the length and that then perimeter of the rectange is 50.
A. Set up an equation for the perimeter involving only L, the length of the rectangle.

2007-07-18 01:32:22 · 11 answers · asked by yuleydis77 1

The bigest number known!!

2007-07-18 01:27:04 · 17 answers · asked by i'm a ninja :] 2

There are ten desks in a row. (a) In how many ways can 5 students be seated at consecutive desks? (Hint: First determine the number of ways that the 5 consecutive desks be chosen). (b) If the five students are seated for a test and there is to be exactly one empty desk between each two students, in how many ways can the students be seated in a row?

2007-07-18 01:03:37 · 4 answers · asked by Anonymous

On the indicated intervals. . .

1) f(x) = x^3 - 2x; [0, 4]



Can you also clarify what rate of change is?? Thanks

2007-07-18 00:05:20 · 4 answers · asked by Anonymous