Saturday
November 1, 2014

Posts by elissa


Total # Posts: 19

Linear algebra
Consider for every real number a the linear system of equations: { x +( a + 1 )y + a^2 z = a^3 { ( 1 - a )x +( 1 - 2a )y = a^3 { x +( a + 1 )y + az = a^2 b)Find the values of a for which the system has no solution, infinitely many solutions, and a unique solution
April 27, 2014

English
I'm supposed to write about a hero using gods and goddesses for this "Your Hero's Journey Outline" but I can't typically think of what to write about. Any ideas?
October 9, 2013

Algebraic Expressions
The temp. was 72 degrees F at noon. At midnight, the temp. dropped to 12 degrees F. Write an algebraic expression to find the sum.
September 17, 2013

chemistry
calculate the mass of naso4 needed to prepare of 0.5L of 0.15M of solution
November 14, 2012

social studies
What action taken by Mexican officials changed the trade law?
January 22, 2011

sosial studies
what's an oasis?
September 23, 2009

question for all
where are these "200 experts" standing by, ready to help us? I haven't gotten any help on my question, and I need it!!!
May 28, 2009

math
thanks so much
May 28, 2009

math
where are these "200 experts"???? I thought they were on this site, ready to help us?!?!?!
May 28, 2009

math
y=5x-7 and -3x-2y=-12 I have to find the linear system using substitution I have gotten it to -3x-2(5x-7)=-12 Now I am stuck at solving for x PLEASE HELP any way you can Thanks Oh, and please show me how you did it as well :)
May 28, 2009

math
-3x-2(5x-7)=-12 I need to solve for x, please help!! and show me how you did it if possible!
May 28, 2009

Math
or, you could do it simpilar and just do 76-19, and you get 57, x=57
May 28, 2009

history
Ms. Sue, you've been helping a lot of people, could you help me with my question?
May 26, 2009

7th grade-math
I need to find the linear system for the equations 4x+3=y and x=y-2 Any help at all would be great! And please show me how you did it if possible, thanks!
May 26, 2009

8th grade
okay, i know i can't help you with your problem, but I REALLLLLY need help with mine, could you help? Linear systems, the equations are 4x+3=y and x=y-2 I need the solution, and I'm stuck, PLEASE help me!
May 26, 2009

7th grade math
no problem, you don't happen to know the answer to my problem though, do you? it's labled 7th grade-math by Elissa on the current questions list
May 26, 2009

7th grade math
OH, i'm sorry, i switched them around; it is calvin that gets 69, and alan that gets 63 but, here's how i did it i started with a few guesses, but when i guessed alan having 63, i said okay, he has 3 times as much as bonnie, so i need to divide 69 by 3 and got 21, then...
May 26, 2009

7th grade math
use guess and check, the answer is: alan:69 bonnie: 21 and calvin: 63
May 26, 2009

algebra
I need help, i have to solve the linear solution using substitution, the equations are 4x+3=y and x=y-2 Also, please show me how you did it if possible. Thanks!
May 26, 2009

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