Mathematics - 23 October 2007

pleasee i need helpp with this hard homeworkk

2007-10-23 07:41:14 · 2 answers · asked by gorskythug 2

The problems are
What operation in arithmetic represents each of the following?
1) Decreased by
2)sum of
3)increased by

The second problem is
A car rental agency charges $40 per day and $0.20 a mile for each mile over 100 miles. If the charge for one day rental was $70, how many miles was the car driven?
How do you write an equation to solve this problem?
Write and solve this equation.
Is the solution of this equation of the solution of the problem? Why?

THANKS IN ADVANCE!

2007-10-23 07:36:53 · 4 answers · asked by babygirl 1

One circle has a center (0,4) and a radius of 5 the other has a center (0,-5) and a radius of 7. The x coordinates of the points of intersection of the two circles are.
(x1,x2)

2007-10-23 07:29:07 · 3 answers · asked by ws 3

2007-10-23 07:29:02 · 1 answers · asked by Anonymous

2007-10-23 07:25:54 · 2 answers · asked by Anonymous

The problems are
What operation in arithmetic represents each of the following?
1) Decreased by
2)sum of
3)increased by

The second problem is
A car rental agency charges $40 per day and $0.20 a mile for each mile over 100 miles. If the charge for one day rental was $70, how many miles was the car driven?
How do you write an equation to solve this problem?
Write and solve this equation.
Is the solution of this equation of the solution of the problem? Why?

THANKS IN ADVANCE!

2007-10-23 07:25:24 · 4 answers · asked by babygirl 1

A=
0 1
-1 1
Calculate A^2=

A^3=

A^1660=

2007-10-23 07:20:27 · 3 answers · asked by Anonymous

A. if p = q is a true conditional and p is true, then q is true

B. if p = q and q = r are true conditionals, then p = r is true

C. if a, b, and c are real numbers, then a(b + c) = ab+ac

D. NONE OF THEESE

?? thanks 4 the help

2007-10-23 07:11:20 · 4 answers · asked by home_ed05 1

a. if a vehicle had four wheels, then it is a car
b. if a vehicle is a car, then it has four wheels
c. if a vehicle is not a car, then it does not have four wheels.
d. NONE OF THEESE?

help please thanks!

2007-10-23 07:01:29 · 3 answers · asked by Anonymous

1) -8 - 3 x 7 - 4 / -2(-3 - 7 ÷ (-6 + 2))

I got -33/2.5 according to my TI-83.


2) -6√x + 1 - 4y^2 when x = 24 and y = -1

I got -5.

2007-10-23 07:00:55 · 5 answers · asked by starscream 1

How many 5 digit telephone numbers are there that do not have '75' in that order in any place in the number? (assume a telephone number can start with 0)

2007-10-23 06:59:47 · 6 answers · asked by Anonymous

Question was to find general solution of dy/dx = (4x+2y-1)^1/2

This is what I did: let z = 4x + 2y -1 therefore z'=4+2y' => y' = z'/2 - 2
Substitute to get z'/2 - 2 = z^(1/2) => z' = 2*z^(1/2) + 4 (A Bernouilli Equation) Dividing thru by z^(1/2) gives

z^(-1/2) * z' = 2 + 4*z^(-1/2)

Now say m = z^(-1/2)
=> m' = (-1/2)*z^(-3/2) => m' = (-1/2)*z^(-1/2)*z^-1
=> 2*m' = -m*z^-1
=> 2*m'/m = z^-1

Now integrating both sides gives

2 ln m = ln z + c

Does this look right? Where do I have to go from here?

2007-10-23 06:55:34 · 2 answers · asked by Unoticed 1

they want me to prove that the Limit as "x" approaches 0 for x^3cos(1/x) is equal to zero...i'm kind of confuse can someone give me a detailed explanation on how to prove this using the Squeeze Theorem?

2007-10-23 06:48:25 · 5 answers · asked by none 1

Solve:
4^(x-1) = 7

2007-10-23 06:47:05 · 11 answers · asked by pearlnruby89 1

conjecture: If the sum of two intergers is even, then both the intergers are even.

a. 14+9=23
b. 6+10=16
c. 3+9=12
d. none of theese

thanks 4 the help

2007-10-23 06:47:00 · 3 answers · asked by Anonymous

express in form a(x-h)^2+k

2007-10-23 06:44:59 · 1 answers · asked by icygurl205 1

How many 6 letter words could be made from set A={a,b,c,d,e} without using the letter 'a' ?

2007-10-23 06:44:50 · 1 answers · asked by Anonymous

Help me with an algorithm that takes a number and converts it into roman numeral?

hey guys i need help on how to make a program that reads an input number between 1000~3000 and gives you its roman numeral in the console. I have been really having trouble figuring out an algorithm for this. If any of you have tips I'd greatly appreciate it. I know this is really not a math question, but i posted this question in programming & design and got no responses. My second best option was to post in math.

this is similar to what i have to make...

http://www.ivtech.com/roman/

(also, i use dev c++ 4)

2007-10-23 06:37:58 · 5 answers · asked by Axis Flip 3

A particle moves counterclockwise around the ellipse 9x^2+16y^2=25.


a.In which of the four quadrants is the derivative dx/dt positive?
b.Find the relation between dx/dt and dy/dt
c. At what rate is the x-coordinate changing when the particle passes the point (1,1) if its y-coordinate is increasing at a rate of 6 ft/s?
d. What is dy/dt when the particle is at the top and bottom of the ellipse?

I would really appreciate some help with this. Thank You.

2007-10-23 06:32:47 · 3 answers · asked by Anonymous

given: x is a nonzero real number

a. x2^[to the second power] is positive
b. x > 0
c. - x < 0
d. all of theese

?? help ! thanks!

2007-10-23 06:28:27 · 4 answers · asked by Anonymous

2007-10-23 06:27:50 · 1 answers · asked by Boogie 2

Lance and Mario were working in the snack bar at the turbulent tunas concert. they sold hot dogs for $1.65, hamburgers for $2.35, sodas for $0.85 and the combo plate for $3.89. They sold 80 items in an hour for $163.24. How many of each kind of food did they sell? and how much did they make on each kind of food?

Thanx a million! plzzzz show all work!
any help is appreciated! plz help me! what goes around comes around!

2007-10-23 06:20:14 · 3 answers · asked by mathewL 3

y^4/5 z^2/3 over y^1/5 z

2007-10-23 06:17:13 · 3 answers · asked by starscream 1

Solve the equation: (x+2)/(x+3)-(x^3)/(x^3-9)=1-(x-1)/(3-x)
THANK YOU : D

2007-10-23 06:09:05 · 1 answers · asked by nickole m 1

2007-10-23 06:08:23 · 5 answers · asked by Anonymous

2007-10-23 06:06:29 · 2 answers · asked by tchoxi2000 1

Determine a quadratic function f(x)=ax^2+bx+c if it admits a maximum euqual to 9 and passes though the points (1,-7) and (-1,-27)

Thank you : D

2007-10-23 06:01:27 · 1 answers · asked by nickole m 1

"If you toss 10 fair coins in the air, what is the probability that EXACTLY 5 will land on tails?"

That would be:

.5^10 = answer, right?
Because, although you need 5 tails...you still need the OTHER 5 to be heads...so therefore you still need all 10 to be a specific result...and a probability of .5 for each(heads or tails)...means .5 x .5 x .5 x .5...etc ... or .5^10, right?

And I don't have a scientific calculator, so could someone give me the decimal and/or percentage answer for this?

Thanks!

2007-10-23 05:52:24 · 15 answers · asked by suezzle 3

"If the twelve months of the calendar were randomly "shuffled", what is the probability that the first three months "dealt" would each have thirty-one days in them?"

7/12 x 6/11 x 5/10 .....Right? or no?

And also please, what is the decimal and/or percentage answer to this question?

Thanks!!!

2007-10-23 05:47:43 · 4 answers · asked by suezzle 3

2007-10-23 05:46:36 · 3 answers · asked by nickole m 1