Mathematics - 12 June 2007

A spring is hanging from a support. The distance that the spring stretches is directly proportional to the mass attached to it. A mass of 35 g stretches the spring 10 cm. How far will a mass of 42 g stretch the spring?


A.
Option 1:

B.
Option 2: 12 cm

C.
Option 3: 14 cm

D.
Option 4:

2007-06-12 12:31:12 · 6 answers · asked by smile 1

2007-06-12 12:30:16 · 2 answers · asked by Alyzain J 1

f (x) = 1
-------
square root x-6






***x-6 is under the square root sign

2007-06-12 12:28:50 · 4 answers · asked by Desilicious 1

You have a prescription to take one half of a pill per day for 12 days, but the pharmacist (who is too busy to divide pills for you) gives you 6 whole pills in a bottle. On day 1, you remove a pill from the bottle, break it into two half-pills, take one, and return the other half-pill to the bottle. On all subsequent days you shake the bottle thoroughly and pour something out - whatever comes out first - either a half pill or a whole pill; if it's a half pill you take it and you're done for that day; if it's a whole pill, you split it into two half-pills, take one, and put the other back in the bottle, exactly like you did on day 1.

On day 12 there can be only one half pill left in the bottle, but on day 11 there are two possibilities: either there is one whole pill or there are two half-pills left in the bottle. What is the probability that there are two half-pills in the bottle on day 11?

2007-06-12 12:27:49 · 3 answers · asked by Anonymous

Three years ago a city had a population of 65,000. Today it has 72,000. What is the percent of increase to the nearest whole percent?

2007-06-12 12:23:48 · 5 answers · asked by Jaycie C 1

3/2 (log7)X=(log7)125

the sevens are subscript. I couldn't figure out how to do on the computer. help me please!! show work!!

2007-06-12 12:22:42 · 3 answers · asked by ignotus 2

when asked to give the determinant of a matrix in therms of a k (variable) what do i need to do.

i. e.

give the determinant of the matrix A in therms of x:


[ 2 -3 -1]
[-1 4 3]
[6 4x 2]

2007-06-12 12:18:11 · 1 answers · asked by studentin.. 1

In one of my classes someone asked why negative numbers are in brackets and I can't seem to find an answer other then something to do with decimal points but I don't understand it.

2007-06-12 12:13:29 · 11 answers · asked by queenogreen 1

6a) Check for discontinuity for this function

y = 2x/x-3 or (2x) (Divided by) (x-3)

i dont remember learning this in class so maybe someone can help me by showing me the steps, thanks a bunch

2007-06-12 12:11:40 · 7 answers · asked by Anonymous

possible answers:

a. -2, 2, 2cis(pi/3)
b. 2, 2cis(2pi/3), 2cis(4pi/3)
c. -2, 2cis(pi/3), 2cis(2pi/3)
d. 2cis(pi/3), 2cis(2pi/3), 2cis(4pi/3)

2007-06-12 12:05:47 · 3 answers · asked by Anonymous

PS. It comes out as coordinate points.

2007-06-12 12:03:48 · 2 answers · asked by Anonymous

This is supposed to be easy, but I can't seem to figure it out.

x^2+3x-20

Thanks

2007-06-12 11:59:10 · 6 answers · asked by Rajendra T 1

1008in^2 = .......ft^2

Thank you!

2007-06-12 11:57:44 · 6 answers · asked by Princess 1

2007-06-12 11:41:13 · 4 answers · asked by Anonymous

Is it m= y-y
--------
x-x ????

2007-06-12 11:33:44 · 17 answers · asked by norie2011 2

these are the problems.......
#1) combine and express in simplest form:

y - 20 2
-------------- + --------
y^2 - 16 y - 4

#2) expressed in simplest form,

x^2 = x - 6 x + 2
------------------ * -------------- , x does not = 2, o, -2,is equivalent to?
x^2 - 4 x + 3



my question is for the multiplying do you factor and simplify and for adding you factor then combine?? how can u tell when and wat to do?

2007-06-12 11:26:28 · 1 answers · asked by Desilicious 1

these are the problems.......
#1) combine and express in simplest form:

y - 20 2
-------------- + --------
y^2 - 16 y - 4

#2) expressed in simplest form,

x^2 = x - 6 x + 2
------------------ * -------------- , x does not = 2, o, -2,is equivalent to?
x^2 - 4 x + 3



my question is for the multiplying do you factor and simplify and for adding you factor then combine?? how can u tell when and wat to do?

2007-06-12 11:25:30 · 1 answers · asked by Desilicious 1

the original equation is as follows:

S= 1/(1-dG) * 1/(1-tF)

thiis for exam revision so an answer as soon as.... please :D

2007-06-12 11:20:58 · 2 answers · asked by dj_toad2003 2

It is known that for a large number of coin tosses, the proportion of tosses which turn up heads is approximately the same as the actual probability of obtaining a head on a single toss. In other words, Number of heads/Total Tosses= P(Head on a single toss.) This proportion is non-deterministic (unpredictable) however, but by a theorom proved called the Strong Law of large Numbers, the sequence of proportions converges (become arbitrarily close) to the value for P(head on a single toss) with probability one. (ie. 100% chance) Is the value for P (head on a single toss) a rational # r an irrational #? You may use any method you want in attempting to address this question. There may not be a correct answer, just support your reasoning for your answer. I'll be indebted to anyone who can figure it out.

2007-06-12 11:12:43 · 8 answers · asked by whycanti67 1

mainly on geometry and algebra

2007-06-12 11:07:02 · 8 answers · asked by cutie83185 1

2007-06-12 11:05:18 · 7 answers · asked by jncer92 2

there are 50 light bulbs, and 10 are defective. 5 are taken randomly without replacement.

2007-06-12 10:59:10 · 5 answers · asked by SILVIA P 1

10 points go to the first solver who finds the unique solution.

2007-06-12 10:55:52 · 2 answers · asked by Anonymous

2x^2 + 16x + 32

Will post the other one separate, ugh

2007-06-12 10:52:00 · 13 answers · asked by lexisayn 1

5. Jack can till a garden in 8 hours. Jill can till the same garden in 6 hours. Working together, how long (in hours) would it take to till this garden? (Express your answer to the nearest tenth of an hour.)

2007-06-12 10:48:35 · 12 answers · asked by T P 2

Find the dimensions of a rectangle if the are is 63cm^2 and the perimeter is 32 cm. if x represents the with of the rectangle.

when your solving one of your steps will be:

63=(16-w)w

or

63=(w-16)w

im not sure if its like that but im just asking if the sixteen would be before or after the w????

2007-06-12 10:46:27 · 7 answers · asked by :) 5

2007-06-12 10:39:17 · 2 answers · asked by jennifer s 1

Solve this equation:
|2x-5|=9

1/2|x|=5

-|3x+8|=-2

Solve the inequalities:

3(x-5)+2>-10

10(2-x)- (8-5x)>9

|3x-1|-2<0

-2|5-2x|<-6

|4x+3|+8<5

2007-06-12 10:38:09 · 16 answers · asked by lmt_gisselle 1

2007-06-12 10:24:28 · 15 answers · asked by jennifer s 1

"On average , how many gallons of oil flow through the pipe in the first 50 days?"



This was a question on one of my calculus tests along with a formula. I keep telling my calc teacher he didn't word it correctly because he says the answer is a rate of oil flow (gallons per hour), and I say the question is set up for a quantity of oil (gallons). And in order for it to make sense he has to put a "per hour" in the question.

Am I right?

2007-06-12 10:19:31 · 5 answers · asked by Anonymous