Mathematics - 1 October 2007

For Monday morning's staff meeting, Jim bought 2 bags of bagels and 3 packages of cream cheese and paid $12.00 (excluding sales tax). For Friday's meeting, he bought 4 bags of bagels and 2 packages of cream cheese and paid $14.00 (again, excluding sales tax). How much do bags of bagels and packages of cream cheese cost?

2007-10-01 18:01:07 · 3 answers · asked by Lady E 1

Without using graphing calculator, is it possible to find all the asymptotes of:

y = cos^2(x) / (x^2) ?

I can find one, when x = 0, but the book also has y=0. Any ideas how I can approach that?

2007-10-01 17:57:19 · 3 answers · asked by Anonymous

show that the function F(x) = [(x-a)^2 * (a-b)^2] +x takes on the value (a+b)/2 for some value of x.

2007-10-01 17:57:02 · 2 answers · asked by shishi 1

Im helping my friend with her homework and there was 1 question i couldnt figure out, i think the question deals with converting but i dont know if my reasoning is true and if does deal with converting how can i convert kilograms to meters?
please help me my brain hurts and i still have homework to do, well i think im finished. sorry to go off the subject. =)

2007-10-01 17:54:38 · 16 answers · asked by Kimberley M 1

2007-10-01 17:47:41 · 6 answers · asked by curzon17 1

You could write formulas to find the perimeter and area of each figure. Then find the perimeter and area of each figure. Show your work. :)

1. Pretend there is square box here. 7 cm on the right and 9.6 cm on the bottom.

Could someone please help me with these. i dont get it.

2007-10-01 17:47:36 · 4 answers · asked by Anonymous

I think i know the answer but i dont know why
i need it done in like a step by step process so i can know how to do these kind myself thanks so much!

(x-5)squared

is the answer x squared-10x+25
if so, why?

2007-10-01 17:46:08 · 9 answers · asked by Angelica 1

i need help with my geometry homework, and im stumped.
im staying up late trying to figure it out,
and i cannot get this one.
everyone at my house is asleep, so i cant ask for help.
can anyone help me?
give me the answer?
explain it to me?
show me how to do it so i can do it on my own?

whatever you want to do,
just as long as i can get the answer out of it.
i need it by 6 am today, and it counts for alot.
and no, i cannot miss it.
PLEASE HELP!!
=]

2007-10-01 17:46:03 · 10 answers · asked by m3aghanFTW 2

find the equation.
1. x: 0,3,6,10
y: 20,8,-4,-20
2. x: 2,4,6,8
y: 5,8,11,14

3. x:0,3,6,9
y:20,11,2,-7

2007-10-01 17:38:47 · 1 answers · asked by Anonymous

2007-10-01 17:27:31 · 7 answers · asked by ruas slickyboy 2

2007-10-01 17:23:40 · 5 answers · asked by jose8153@sbcglobal.net 1

2007-10-01 17:21:49 · 2 answers · asked by Anonymous

I am almost finished with my math homework, but I am stuck on a few final word problems. Those who may help do not have to give me the answers if they do not wish to, but a push in the right direction would really help me! Please show me your work. Thank you so much to anyone who answers!

A freight train travels 90 miles in the same time that a passenger train travels 150 miles. If the passenger train goes 30 miles per hour faster than the freight train, find the rate of each. (I know RxT=D, but this one is stumping me...)

Sally walks to her friend's house at the rate of 3 miles per hour and then runs home at the rate of 6 miles per hour. How far does Sally live from her friend if the round trip takes 30 minutes?

How many liters of pure alcohol must be added to 20 liters of a 30% solution to obtain a 35% solution? (Is the answer 1.2 liters?)

If $10,000 is invested part at 7% and part at 9%, and if the total annual return is $840, how much was invested at 7%?

2007-10-01 17:11:33 · 5 answers · asked by mrsdynamite 2

There is a large circle with radius R. Inside this circle is placed another circle with radius r (< R) so that the two circles are concentric. Now, in the region between the circumferences of the two circles, place N circles (of diameter R-r) such that each small circle has one and only one point of contact with each large circle and with two adjacent small circles.

Basically, imagine that this is like a bearing system.

Is this possible? If so, what is the radius of the smaller of the two large circles (r) in terms of the radius of the largest circle (R). Also, how many "small" circles can fit in the space between the two "large" circles?

I hope this is clear. I thought about this puzzle earlier today and can't figure out how to solve it. I guess that's what 15 years of no formal math can do to a person... *sigh*

2007-10-01 16:47:42 · 9 answers · asked by Anonymous

"Marissa's car accelerates at an average rate of 2.6 m/s^2. Calculate how long it takes her car to accelerate from 24.6 m/s to 26.8 m/s."

Easy, but for some reason, I can't get it.
I've tried, but it's not working out, haha.

If you could, explain while solving, please.
Thanks!

2007-10-01 16:44:54 · 4 answers · asked by Anonymous

Suppose that a 5-foot-long object falls from a 35-foot height and that you are 6 feet tall and standing directly under the object.
How long do you have to get out of the way?
Time = ? seconds

I'm getting ~2 sec but it seems to be wrong!

2007-10-01 16:43:46 · 1 answers · asked by Carlos 1

function: f(x)=8x^4 - 23x^3 + 23x^2 - 26x + 15
Intervals: [-1,0], [0,1], [1,2], [2,3]

For some reason, my instructor didn't cover how to do these in class, but he assigned them for our homework. I have no idea how to go about doing them. Any help is appreciated, thanks!

2007-10-01 16:31:39 · 2 answers · asked by AnonymousOne 2

Water weighs 62.4lb/ft. How much does the water weigh in a full 5ft by 3ft by 2ft rectangular fish tank?

2007-10-01 16:08:55 · 5 answers · asked by Anonymous

Solve for d


16d - (4 - 5d) = -67

2007-10-01 16:08:26 · 17 answers · asked by x10 2

a) 2x^3 + 7x^2 + 2x - 3

b) 10x^3 + 33x^2 + 23x - 6


show steps please :) thanks

2007-10-01 15:46:22 · 3 answers · asked by mystery_girl07 2

For a line segment AB, one endpoint is A(0,6) and the midpoint is M(4,7) find the coordinates of endpoint B.

2007-10-01 15:38:08 · 5 answers · asked by Koool dude 1

My dad was wondering and he said it will bug him all night so HELP!!!!!!!!!!!!

2007-10-01 15:28:24 · 7 answers · asked by Anonymous

I am lost completely

umm I hears something about the columns - Rank= 0 then it's independent else its dependent


idk how to solve or what am I supposed to do exactly??

what is it?

confused here

2007-10-01 15:19:00 · 2 answers · asked by Anonymous

10-6(9-4)to the 2nd power
4(5)the the 2nd power
4(25)
100

2007-10-01 15:15:13 · 8 answers · asked by Lester D 1

2007-10-01 14:53:42 · 6 answers · asked by Anonymous

help

2007-10-01 14:50:12 · 7 answers · asked by Johnny D 1

2007-10-01 14:49:19 · 3 answers · asked by thegre8t 1

Hi all, I need help understanding how to graph sin waves.
An example problem is:

A lemonade stand sells a lot of drinks in the sumer and not very many in the winter. The best day of the year was August 10th (215th day), when 150 glasses were sold. The worst day was February 10th (41th day), when 40glasses were sold.

a) give the Domain, Range, and period of the situation above

b) Write an equation for a sine function that has been "danced" to fit the situation above [simplify]

c) use the equation from part b to find the # of glasses sold on June 1 (154th day)

d) write an equation for a cosine function that has been "danced' [simplified] to fit the situation above. Explain the similarities and differences between this cosine function and the sine function from part b




For (A), I got Domain to be all reals, and Range to be [40,150]. How do I solve for period?


How do I go about solving the rest of this from there? Thanks in advance for helping me understand this concept!

2007-10-01 14:41:40 · 2 answers · asked by rommelyisunsin 1

How many millimeters are there in 1 m?
How many centimeters are there in 1 m?

PLEASE HELP!!!!!
Best answers get 10 points.

2007-10-01 14:40:42 · 6 answers · asked by Anonymous

i don't know what i'm doing wrong here...
{int from 2 to 8} -2/((x-4)^2)dx

i solved the integration as 2/x-4

plug in 8 and get 1/2
plug in 2 and get -1

1/2 - -1 = -1/2

what am i doing wrong here? someone please help!

2007-10-01 14:26:07 · 3 answers · asked by Alysse 1