Mathematics - 19 September 2007

suppose the intial height from which a rubber ball drops is 100in. The rebound heights to the bearest inch are 80,64,51,41.......
a) what is the rebound ratio for this ball?
b) what is the height of the tenth rebound?
c) after how many bounces will the ball rebound less than 1in ?less than 0.1 in?

2007-09-19 11:09:39 · 1 answers · asked by Anonymous

2007-09-19 11:07:44 · 3 answers · asked by Anonymous

by columns:
{(1,0,0)(1,0,0), (0,1,0)(0,1,0), (0,0,1)(0,0,1), (1,1,1)(0,0,0), (0,0,0)(1,1,1)}
is linearly dependent.

2007-09-19 11:07:19 · 1 answers · asked by kondiii 1

i have to solve for the variable.

here is the problem.

4-6(w+2)= 10

i got the answer of w=3

is that right?

if not please help me figure out the problem then.
step by step answers would be the best!
thank you.

2007-09-19 11:06:05 · 3 answers · asked by lalala 2

The original statement must be true.

The original statement must be false.

Not enough information

2007-09-19 11:04:51 · 3 answers · asked by Mike H 2

If three points do not lie on the same line, then they are not collinear.

If three points are collinear, then they lie on the same line.

If three points are collinear, then they are coplanar.

If three points are not collinear, then they do not lie on the same line.

2007-09-19 11:00:52 · 3 answers · asked by mike 1

A person leaves home and walks due west for a time and then walks due north.

a- The person walks ten miles in total. If W represents the (variable) distance west she walks, and D represents her (variable) from home at the end of her walk, is D a fuction of W? Why or why not?
b- Suppose now that X is the distance that she walks in total. Is D a function of X? Why or why not?


PLEASE DO NOT USE COS OR TAN. I KNOW YOU HAVE TO USE THE DISTANCE FORMULA BUT I DON'T KNOW HOW TO APPROACH THE PROBLEM

THANKS A LOT!

2007-09-19 10:49:04 · 4 answers · asked by JUST ME 1

5/12

11/16

2007-09-19 10:43:26 · 11 answers · asked by Anonymous

On my homework I am asked to compute the derivative using the defintion of the derivate, and then later am asked to interpret the derivative by plugging in a number. Here is what I had to derive:

h(x)=3x-7 using definition of derivatives I get:

h'(x)=lim (1/h)[g(x+h)-g(x)] = lim (1/h)[3(x+h)-7-(3x-7)]
h->0 h->0

=lim (1/h)[3x+3h-7-3x+7] 3x and -3x cancel, so do 7's
h->0

=lim (1/h)[3h] the h's cancel so I get 3/1
h->0

therefore h'(x)=3 here comes the confusing part

I am asked to compute equation of tangent line to
h(x)=3x-7 at x=-13
I know tangent line eq. is y= f(a)+f ' (a)(x-a)
if we say that f ' (a) is h ' (-13) and a is -13, how in the world do I plug in a -13 into h'(x)=3 ?? Is the answer always 3? I am guessing it is constant since h(x)=3x-7 looks like eq-n of a straight line, but I need confirmation.

2007-09-19 10:42:21 · 5 answers · asked by pyrojelli 2

2007-09-19 10:38:10 · 3 answers · asked by Anonymous

x^2+2x point(-3,3)

also find an equation of the tangent line


please explain how to do it so i can learn, my professor does not explain even when asked, his response is to look it up in the book. please help thanks

2007-09-19 10:33:44 · 4 answers · asked by ccutestuff2001 2

2. convert 3 feet to centimeters
3) convert 3.5 lb. to grams

using fractions
ex.
984 ft = 12 in/1 ft = 11808
i just dont know how to do it for this

2007-09-19 10:32:14 · 2 answers · asked by Anonymous

find the integral of (x+4)/(2x^2 + 3x +2)

help!

2007-09-19 10:30:41 · 3 answers · asked by hong_wei886 3

here are a few problems i need step by step answers plz help me understand this


4x+4=2x+36

9y-1=y-25

14p-8=22+20p

2007-09-19 10:12:42 · 10 answers · asked by ♥♪♥♪Mandy♥♪♥♪ 2

write in the form a+bi, where a and b are real numbers.

preal prob please help.

2007-09-19 10:10:54 · 2 answers · asked by icygurl205 1

Yup.

2007-09-19 10:07:21 · 5 answers · asked by jakeh816 2

2007-09-19 10:03:40 · 8 answers · asked by verlencia l 1

2007-09-19 09:54:31 · 11 answers · asked by lucky charm 127 3

If a=b-c, then

a) c=b-a
b) c=a+b
c) c=a-b

Also how do you get the answer?

2007-09-19 09:54:08 · 11 answers · asked by ami.lewa1403 1

for example
8u=3u+35


i need step by step instructions

2007-09-19 09:50:41 · 5 answers · asked by ♥♪♥♪Mandy♥♪♥♪ 2

A box with an open top is to be constructed from a rectangular piece of cardboard with dimensions 12 inches by 20 inches by cutting out equal squares of side x at each corner and then folding up the sides.

(a) Find a function that models the volume V of the box in terms of x.
V =

(b) Find the values of x for which the volume is greater than 200 in3. Give your answers correct to 3 decimal places. Give as an inequality

(c) Find the largest volume that such a box can have. Give your answers correct to 3 decimal places.

2007-09-19 09:43:52 · 3 answers · asked by Anonymous

A garden that is 5ft by 6ft has a walkway 2ft wide around it. Find the amount of fencing needed to surround the walkway.

2007-09-19 09:35:35 · 3 answers · asked by Anonymous

2007-09-19 09:30:05 · 5 answers · asked by Desiree J 1

Victoria weighs 5/7 as much as Mario. Victoria weighs 125 lb. Write and solve an equation to determine how much Mario weighs.

2007-09-19 09:21:16 · 10 answers · asked by Anonymous

2007-09-19 09:19:07 · 11 answers · asked by strewth78 1

Given 5 points in the interior of a square of side length one. Prove at least two two of the points are less than
sq. rt. of 2/2
units apart. Thx

2007-09-19 08:51:17 · 7 answers · asked by Meow* 2

HELP PLEASE!!
1. Find 17% of 600.
2. Find 4% of 80.
3. Find 3.2% of 250.
PLEASE SHOW WORK...

2007-09-19 08:42:46 · 11 answers · asked by cougarsam456 1

l x/3 + 4 l >7

2007-09-19 08:39:25 · 4 answers · asked by Anonymous

2007-09-19 08:38:28 · 6 answers · asked by Desiree J 1

2007-09-19 08:37:24 · 16 answers · asked by Kimmy 2