Science & Mathematics - 10 September 2007

A company find that there is a linear relationship between the mount of money that is spends on advertising and the number of units it sells. If It spends no money on advertising, it sels 300 units for each additional $5000 spent, an additional 20 units are sold.

if x is the amount of money that the company spends on advertising, find a formula for y, the number of units as a function of x

Thank you!!

2007-09-10 13:53:49 · 6 answers · asked by n8van2 2 in Mathematics

I have to do a science project (it's kinda like a science fair type thing) I am allowed to do a project/ experiment on any topic but it's so hard to pick one that's not too hard. This is the first time I'll be doing a project like this so can anyone Please help me think of an easy topis I can do? I was leaning more towards something that has to do with fruits or vegetables. I have spent so many hours online trying to find something good to do but I honestly cant find something "interesting" and simple for me to do. Please help me. By the way, I'm in eighth grade and I just got in to seminar science so this stuff is new to me.

2007-09-10 13:53:07 · 5 answers · asked by Anonymous in Other - Science

Please explain and show every step

Find the number of terms in each of these geometric sequences:

a) (4, 12, 36,...,236196)

b) (48, 36, 27,..., 6561/1024)


Find the 6th term for the following:

a) (21, 9, 27/7, 81/49,...) Leave in fractional form

2007-09-10 13:51:25 · 2 answers · asked by Physics 101 1 in Mathematics

64 l = how many ml?
75 watt light bulb is 6,250 mA what us this current in amperes?
4,046.9 m 2^ = ( ) km 2^ ?

2007-09-10 13:51:08 · 9 answers · asked by chris b 1 in Mathematics

Hello All, I'm Having A-Bit Of A Problem Understanding These Conditional Statements.........
I Will Give You The "Instructions" and the Whole Problem.
Please Answer And EXPLAIN!!!
Thank You
=================================================


Tell whether each of the following is the converse, inverse, or contrapositive, original conditional, of none of these using the original statement: " I like school, if I don't have too much homework."


1)_____________If I have too much homework then I don't like school.
2)_____________If I don't have too much homework, then I like school.
3)_____________If I don't like school, then I have too much homework.

2007-09-10 13:50:56 · 1 answers · asked by Matthew S 1 in Mathematics

A cord is used to vertically lower an initially stationary block of mass M kg at a constant downward acceleration of g/4. The block has fallen a distance d.

(a) Find the work done by the cord's force on the block. (Answer in terms of M, g, and d.)

(b) Find the work done by the weight of the block.

(c) Find the kinetic energy of the block.

(d) Find the speed of the block. (Assume the positive direction is downward.)

2007-09-10 13:47:54 · 2 answers · asked by Kristen B 1 in Physics

10. (5,4) and (7,4)

11. (2,6) and (-3, -4)

12. (-2,3) and (4,-6)

How do I do these?

2007-09-10 13:45:39 · 14 answers · asked by Kristen V 3 in Mathematics

2007-09-10 13:45:12 · 9 answers · asked by Destiny E 1 in Geography

2007-09-10 13:43:56 · 5 answers · asked by i luv peace 1 in Weather

An implicit equation for the plane passing through the point (-4,2,-3) that is perpendicular to the line L(t)=<1-2t,-3-2t,4+2t> is ___________

i'd appreciate it if you guys would answer and also explain the process because i really want to get this concept. thank you.

2007-09-10 13:43:13 · 3 answers · asked by kimbokrn 2 in Mathematics

I am sure they have the warehouses full and did not have to buy it since gas went higher?

2007-09-10 13:41:23 · 8 answers · asked by Gypsy Gal 6 in Botany

how do you know when to put an answer, as a square root or round it up to two decimal points? can you just pick whichever method you want to do?

2007-09-10 13:41:11 · 5 answers · asked by ♣♥♠♦ 3 in Mathematics

Given: V=(1/3)Bh, where B is the area of the base and height.

A pyramid has a rectangular base. Find the volume if the length and width of the base and and the height are three consecutive odd integers and x is the largest integer.

The answer I came up with:
(x^3 - 3x^2 + 2x)/3

If it's wrong can someone show me how to figure out this equation?

2007-09-10 13:41:00 · 5 answers · asked by Jenny 3 in Mathematics

Equation:

2x-1/ x^2+3x-1 what is the domain or restrictions? help?

2007-09-10 13:40:57 · 2 answers · asked by Ballerina 5 in Mathematics

?~?~?~?~??!?!?!?!?!?!

2007-09-10 13:37:33 · 12 answers · asked by Daisy 4 in Mathematics

algebra.

2007-09-10 13:37:32 · 3 answers · asked by bahaykubo<3 2 in Mathematics

What's the diffrence between a double or single french horn?
Which is better?

2007-09-10 13:33:35 · 1 answers · asked by Answergrl 1 in Engineering

Heres the problem:

Solve for a:
z=(c-a)/(k+a)

Please explain in as much detail as possible as to how you got to your answer. I think there might be a general formula to solve this but i might be wrong. Anyway let me know. Thanks.

2007-09-10 13:32:18 · 1 answers · asked by Anonymous in Mathematics

2007-09-10 13:31:28 · 4 answers · asked by Anonymous in Mathematics

A crate of mass 36kg is released from the top of a ramp. The ramp is 2.5m lang and inclined at an angle of 0 (theta) to the horizontal, where sin 0 (theta) =3/5. As the crate reaches the bottom of the ramp, it gains a speed of 4.5m/s.

(a) Calculate the gain in kinetic energy.
(b) Calculate the loss in potential energy.
(c) Compare the results in (a) and (b), and show that some other form/s of energy must have been produced.
(d) What is the nature and size of the other form/s of energy in (c)?
(e) Calculate the friction between the crate and the ramp.
(f) Find the work done by gravitational force.

2007-09-10 13:28:52 · 1 answers · asked by Anonymous in Physics

One of my students does not have L1 when you go into STAT Edit List. It begins with L2, L3, etc. I've reset his RAM and that did not do anything. Any ideas how to rename that first column back to to L1?

Thanks

2007-09-10 13:28:08 · 1 answers · asked by ktm 3 in Mathematics

(243 ^ -1/3) ^ -3/5

is it
a) 27
b) -27
c) -3
d) 3

please show me how to do it

2007-09-10 13:26:28 · 9 answers · asked by Anonymous in Mathematics

Really urgent! thanks all =)

2007-09-10 13:25:55 · 4 answers · asked by Sameer Abhishek 1 in Mathematics

thanks!

2007-09-10 13:23:10 · 6 answers · asked by yourTIRAMISU 1 in Astronomy & Space

2007-09-10 13:22:55 · 5 answers · asked by jo mamma 3 in Geography

i was just wondering because the mirror always has a left/right reversal of your image.

2007-09-10 13:22:14 · 4 answers · asked by neener 2 in Physics

loan (based on a 30-year mortgage with a 10% down payment).
Interest Rate 7.0% 7.5% 8.0% 8.5% >8.5%
Probability 0.12 0.23 .24 .35 0.06

2. If a bank is selected at random from this distribution, what is the chance that the interest rate charged on a home loan will exceed 8.0%?

3.The employees of a company were surveyed on questions regarding their educational background and marital status. Of the 600 employees, 400 had college degrees, 100 were single, and 60 were single college graduates. The probability that an employee of the company is single or has a college degree is

4.The probability that house sales will increase in the next 6 months is estimated to be 0.25. The probability that the interest rates on housing loans will go up in the same period is estimated to be 0.74. The probability that house sales or interest rates will go up during the next 6 months is estimated to be 0.89. The probability that both house sales and interest rates will increase during the next 6 months is

2007-09-10 13:20:53 · 5 answers · asked by Anonymous in Mathematics

2007-09-10 13:19:49 · 1 answers · asked by Red 2 in Physics

2007-09-10 13:17:29 · 2 answers · asked by Anonymous in Earth Sciences & Geology

2007-09-10 13:17:00 · 3 answers · asked by Susan M 1 in Earth Sciences & Geology