Homework Help - October 2007

The Reflector on a bicycle wheel is 15cm from the rim. The diameter of the wheel is 76cm at time = 1/2 sec, the reflector is at its lowest point; 3/4 sec later it returns to the same position.Find an equation which will locate the height of the reflector above the ground at any time t.

a) Find height when t=5.2 sec
b) Find the 1st time the reflector is at a height of 59cm above the ground

Can u help me find the equation i have one but i dont know if its correct

Equation- y = -23 Cos [ 2pi/.75(x-.5)]+38
can u comfirm this? plz so i can calculate a & b

2007-10-21 15:45:24 · 1 answers · asked by Kruschiv 1

please help me understand how to recieve the answer

twenty three plus h minus nine equals two
23+h-9=2

2007-10-21 15:31:16 · 19 answers · asked by Anonymous

what would k be if 4x+ky = 8 is a line parallel to a line passing through points (6,-2) and (4,-1)?

I thought i should find the slope first so I got m= -0.5

then i put -0.5 equal to -4 over k (-4/k) because i figure y = (-4x+8)/k and then the slope would equal -4/k

but i can't get k alone to find out what it is. any ideas? thank you.

2007-10-21 15:15:46 · 1 answers · asked by i need help 2

it's one of my biology questions. i also have: why is salt not used on lawns and why do things like salted meat, strawberry jam, and sweet pickles not spoil even though they are exposed to bacteria.

2007-10-21 15:09:42 · 3 answers · asked by mle 2

10(a+b)^2-4(a+b) all over 2(a+b)

2007-10-21 14:52:46 · 2 answers · asked by metsrule3029 1

We can't find a website with a location and we would like to know where it was conducted.

2007-10-21 14:48:30 · 1 answers · asked by crazyd 3

pls give me the total percentage of.0,1,10,76,27,61.ineed it now pls

2007-10-21 14:47:29 · 1 answers · asked by Anonymous

What has your student councel done in the past that you like??

2007-10-21 14:39:28 · 6 answers · asked by lala 1

I need a catchy phrase for a natural high poster, the NATURAL high, as in surfing, waterpolo, any sport that helps keep you off drugs, well i need a phrase for that, only 1 sentence, PLEASE HELP ME!!! the phrase is for Red Ribbon Week.

2007-10-21 14:26:19 · 3 answers · asked by kenna 3

http://caglecartoons.com/viewimage.asp?ID={5ABA1E52-1ADD-4553-ABAF-5788A9B1501F}

Thats the link to the website. It was drawn in 2002, but i am clueless to what its is suspossed to mean!!!

2007-10-21 13:51:27 · 4 answers · asked by Anonymous

1.33 1/3 rpm
2. mitch miller musicfest
3.kind of music or intellectual activity
4.tedious arithmetic
5. cowboy of movie and tv
6.8-legged patriarch
7.dock worker
12.race track distance
13.toast to the new leader
14.1,000,000 to 1
15. geometric figure
16.bye!
17. out of state telephone
18.old age
19. talkative or wordy
20. glum or sad.
every one of these had to have the word LONG in it somwhere. please help!

2007-10-21 13:50:04 · 7 answers · asked by hi! 2

Did she ever get married or have kids? I have to pretend I'm doing the eulogy at her funeral and can't figure out if she had any surviving relatives at the time of her death. Can anyone help me, or direct me to a good site?

2007-10-21 13:44:12 · 4 answers · asked by decoratedemergency 4

Hello to all! I am conducting a survey. How many are against sagging pants or banning sagging pants?
Feel free to state your thoughts and opinions.

2007-10-21 13:41:27 · 9 answers · asked by Anonymous

2007-10-21 13:33:44 · 2 answers · asked by Anonymous

Sorry, I worded the last question wrong...

I am found nearly all over the world.


I need am out of it.. help?

2007-10-21 13:15:43 · 6 answers · asked by Anonymous

--Simple Question
how do you say these times in spanish ↓
6:15
6:20
6:25
6:40
9:45
6:45
9:30
9:10
6:55
10:00
---first person who gets it right 10 pnts.
Please help me.

2007-10-21 13:14:05 · 2 answers · asked by RAWR. 3

How can you describe the way a fish looks, the way their fins move (like finding Nemo), the way they move through water?

2007-10-21 12:37:47 · 11 answers · asked by fox_girl 1

i need something that i could translate into french so yeah!! :)
PLEASE!!

2007-10-21 12:06:44 · 16 answers · asked by Anonymous

I still need a c, i, j, L, n, o, Q, r, t, w, x, y word.

2007-10-21 11:57:20 · 13 answers · asked by ncgirl 1

What did he do during his presidency that makes him so important?

2007-10-21 11:56:33 · 4 answers · asked by Anonymous

2007-10-21 11:38:24 · 3 answers · asked by carboy_carlover 1

I am doing an essay for History, and I need to know this: WHY DID FRANCE HAVE A LOW POPULATION IN THE LATE 1400'S DURING THE SETTLEMENT IN AMERICA FROM THE EURPEAN COLONIZATION.

2007-10-21 11:30:10 · 4 answers · asked by JAMES R 1

2007-10-21 11:29:34 · 3 answers · asked by just_my_opinion 7

n the world of Huckleberry Finn, where would you say moral values come from? The community? One's experiences? Also, which does Twain privelege over others? Which does he mock, or describe dissapprovingly?

Thank you in advance : )

P.S. I'm asking because I want some ideas for my essay, and the subject/question I'm doing it on is from my own head...so please no "I'm not doing your homework" and junk.

2007-10-21 11:15:44 · 1 answers · asked by Anonymous

The man condescended me when he asked about my college degree and then smirked when I told him that I was only in community college.


if not, then how would you write it

2007-10-21 10:58:24 · 20 answers · asked by Moose 3

company buys a watch at a cost of $48.50. Reese plans to sell the watch for $79.99. What is the $ markup as well as % markup on cost? Round to nearest hundredth %. Check your answer. will be slightly off due to rounding.

2007-10-21 10:42:07 · 2 answers · asked by Anonymous

2007-10-21 10:31:48 · 2 answers · asked by love<33 2

does anyone know if they live at another house or if they lived behind there shops? i need help please its for american history.. ty

2007-10-21 10:31:37 · 4 answers · asked by hi 1

The Big City Police Dept. feels that it needs to improve its responsiveness to emergency calls. Over a 100- day period, they recorded the number of callers each day that hung up before a dispatcher could answer the call. At present, an average of 65 callers a day hang up before dispatchers answer the line, with a standard deviation of 20.

Assume that the number of abandoned calls per day is normally distributed.

On any given day what is the percentage of calls that:
- 25 to 85 callers abandon
- Less than 25 callers abandon

It is considered a "bad" day if more than 105 callers hang up before the dispatcher answers the line. What is the chance of haveing a "bad" day?

What is the approximate range of callers that hang up before dispatchers can answer the call?

2007-10-21 10:25:42 · 2 answers · asked by Anonymous

The men, angry about the bill, clamored around the building to prevent its being passed

i think it should be to prevent 'it from' being passed
but i'm not sure...

2007-10-21 10:10:54 · 16 answers · asked by rachel 1