Sunday

July 31, 2016
Total # Posts: 913

**MATH**

I NEED TO SOLVE FOR Y AND X im getting rele confused on this. ok here is the prob. x+y=5 x-2y=-4 equation 1 x+y=5 equation 2 x-2y=-4 Multiply equation 1 by -1. Add equation 1 to equation 2. The x term cancels. Solve for y. THEN, put the value of y into either equation and ...
*December 17, 2006*

**math**

now i have to solve for y. i already no that x=-1. y=-1-2 y=3(-1)+2 -1 -2 = -3 3(-1)+2 = -3 +2 = -1 THANX I WAS SO CONFUSED ON THAT
*December 17, 2006*

**math**

Solve for each system and equations. y=-x-2 y=3x+2 set -x-2=3x+2 solve for x. thanx i was minusing 2 instead of adding two thanx alot
*December 17, 2006*

**Math**

8 runners are entered in the 1000-meter run. How many different first, second, and third place finishes could possibly occur? Is the answer 24? No. 8x7x6 = 336 The first place can be any of eight. For each first place possibility, there are seven possible second place ...
*December 14, 2006*

**Math**

8 runners are entered in the 1000 meter run. How many different first, second, and third place finishes could possibly occur? Is the answer 24? I think that would be a reasonable answer. Way low. I think 8*7*6=336 permutations
*December 14, 2006*

**Deforestation and Wildlife**

What are relationships between deforestation and wildlife extinction? Thank you for using the Jiskha Homework Help Forum. With deforestation the animals lose their habitat. Here is an interesting site: animals.about.com/b/a/2003_08_18.htm Here is a good site on deforestation: ...
*December 7, 2006*

**Math**

How many different three-digit numbers can be written using the digits 4, 5, 6, and 7? Use each digit only once in a number. Is the answer---24 different 3-digit numbers? I did this the long way--Is there a short equation to use for this? Thank you! You have four digits: The ...
*December 4, 2006*

**Substitution Method in Algebra!HELP PLZ!**

m-2n=11
*November 5, 2006*

**Math**

Find a quick and easy method to compute the sum of the first 100 counting numbers. I can't use a calculator. I can't figure out an easy way. 1+2+3+4+5...........98+99+100 Carl Freidrich Gauss had no idea as to how famous his name would become when he solved a seemingly...
*October 3, 2006*

**chemistry**

what are the gases that constitute the air in a refinery Are you talking about what is inside the refinery column (petroleum derivatives), the intake gas (the atmosphere) or the effluent/exhaust (from the stacks?)
*September 22, 2006*

**Economics**

Write the equation of exchange. Define each variable in the equation and then explain why the left side of the equation must equal the right. MV=PQ Take a shot, what does it mean an why must the left = the right.
*July 13, 2006*

**Weird question.........H.W due in tomrrow...quick**

i saw it jai. :D
*June 14, 2005*

**Statistics**

Perfect!!! :P
*June 13, 2005*