# Posts by elissa

Total # Posts: 23

Chemistry
What mass of glucose (C6H12O6) must dissolve in 400.0 g of ethanol to make a 1.60 m solution?

Math
Pamela is 12 years older than her brother. Last year, she was thrice as old as her brother. How old is Pamela now?

Science
Hydhsy

Computers
Which of the following experiences is considered a simulation? A. reading a chapter about dissecting a frog with bright pictures and graphs B. listening to a narrator about dissecting a frog in vivid detail C. using a computer program to dissect a frog*** D. watching a video ...

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

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?

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.

chemistry
calculate the mass of naso4 needed to prepare of 0.5L of 0.15M of solution

social studies
What action taken by Mexican officials changed the trade law?

sosial studies
what's an oasis?

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!!!

math
thanks so much

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

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 :)

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

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

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

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!