Mathematics - 1 August 2006

7th grade math

2006-08-01 13:38:01 · 10 answers · asked by Anonymous

This is a math problem I am having a hard time with, it is listed as follows:
Solve:
2x+3y=11
3x-2y= -3

2006-08-01 13:31:25 · 10 answers · asked by Paul B 1

We just learned that PERMUTATIONS are just an application of fundamental counting priciple. We also learned that COMBINATIONS are just an application of PERMUTATIONS and the counting principle. Question: Can you say that COMBINATIONS are also just an application of the counting principle?

2006-08-01 13:15:52 · 5 answers · asked by downfacingdog 1

I need help with systems of equations.
EX:
x+1/3y=-11
3x/4-y/2=-15

2006-08-01 13:02:24 · 9 answers · asked by nicluvswings 3

obviously the parenthesis are not in this problem. but i know of no other way to represent a with the n in lower case slightly below the n and the 1 over 2 with the lower case n to the upper right of the 2.

2006-08-01 13:01:09 · 4 answers · asked by Anonymous

obviously the parenthesis are not in this problem. but i know of no other way to represent a with the n in lower case slightly below the n and the 1 over 2 with the lower case n to the upper right of the 2.

2006-08-01 12:59:32 · 3 answers · asked by Anonymous

You have 13% chance that balls are the same color in a bag. Pull, mark and replace four times - the prob. that the 5th ball is the same color as 1 of the original 4 is?

2006-08-01 12:49:50 · 2 answers · asked by curious 1

I can't seem to figure this one out! I am sure I'm making it more complicated than it is.

A motorboat can maintain a constant speed of 16 miles per hour relative to the water, and make a trip upstream in 20minutes; the return trip takes 15 minutes. What is the speed of the current?

2006-08-01 12:49:26 · 5 answers · asked by Monica S 2

After much hesitation, I have decided to buy the Texas Instrument TI-84 Plus SE Graphing Calculator. Where should I purchase it from? (cheaply and reliably) Do these things break down easily and need to be fixed/returned sometimes? Should I buy online (which might be cheaper) or at a 'local electronics store'? If online, which website?

Thanks!

2006-08-01 12:48:05 · 16 answers · asked by ♪Grillon♫ 3

2006-08-01 12:46:06 · 16 answers · asked by mitche41385 1

A highway is being built between two towns, one of which lies 35.0 km south and 72 km west of the other. What is the shortest length of highway that can be built between the two towns, and at what angle would this highway be directed with respect to due west?

The answers are 80.1 km and 25.9 degrees south of west, but I need to understand the process.

2006-08-01 12:40:03 · 6 answers · asked by airbearfl 1

Plain english, please.

2006-08-01 12:27:41 · 2 answers · asked by Ejsenstejn 2

Plain english, please.

2006-08-01 12:27:10 · 2 answers · asked by Ejsenstejn 2

what is 10.5 % compounded quarterly ?

2006-08-01 12:14:49 · 4 answers · asked by IRunWithScissors 3

Determine whether the series is convergent or divergent. If it is convergent, find its sum
a)(1/e^(2n)) n=1 and goes to infinity
b)Find the values of x for which the series converges. Use this to obtain the sum of the series for those values of x
2^n((x+1)^n) n=0 and goes to infinity

2006-08-01 12:14:02 · 3 answers · asked by leila_davies1986 1

You have 13 balls and a balancing scale. All the balls look EXACTLY the same, BUT one weighs just slightly different. YOU DON"T KNOW IF THE BALL WEIGHS MORE OR LESS THAN THE OTHERS. You can only use the balancing scale 3 times. How do you discover the odd ball? What is the formula?

2006-08-01 12:01:08 · 41 answers · asked by Anonymous

(x + 8)(x - 3) = 2x - 14 could you show me the process used in solving this problem

2006-08-01 11:59:20 · 10 answers · asked by michael b 1

Express the number as a ratio of integers
0.83=0.83838383 (with a bar on the 83 in (0.83))
Give your answer using the form below:
A/99
A=?

2006-08-01 11:57:55 · 9 answers · asked by Anonymous

10/x=4 + 3/5 = 6 - x/x + 4 can you explain how this is done

2006-08-01 11:52:34 · 7 answers · asked by michael b 1

Evaluate the following expresion if 'm' stands for years, 'P' stands for principal that is invested at a nominal anual interest rate, and 'r' being the compound .

P = 1,000 m = 11 r = 10% compounded anually

2006-08-01 11:46:00 · 12 answers · asked by IRunWithScissors 3

2006-08-01 11:43:42 · 6 answers · asked by Anonymous

other than say medicine.

2006-08-01 11:38:30 · 13 answers · asked by soulsista 4

factor completly 6x^2 - 17x + 12 what process do I use and how do I go about factoring this problem?

2006-08-01 11:25:55 · 7 answers · asked by michael b 1

2006-08-01 11:23:39 · 5 answers · asked by demetria_nyree 2

2006-08-01 11:21:09 · 6 answers · asked by demetria_nyree 2

There is no math tutor available for my summer calculus class. I'm very appreciative of any help.

2006-08-01 11:12:08 · 7 answers · asked by Anonymous

2006-08-01 11:10:04 · 38 answers · asked by Anonymous

2006-08-01 10:50:26 · 2 answers · asked by cold.taint 2

2006-08-01 10:20:03 · 5 answers · asked by emmett t 1

An economist is interested in how the price of a certain item affects its sales. At a price of $, p, a quantity, q of the item is sold.

If q = f(p), explain the meaning of each of the following statements

f(200) = 2200

f ' (175) = -12.5

2006-08-01 10:12:20 · 4 answers · asked by ne0aes0p 2