Wednesday
June 19, 2013

# Posts by jo

Total # Posts: 348

chem
why is hexane known as hydrocarbon?

alegbra
what is 6y square -5y -2??

spanish
I need someone to edit a spanish article for me. I can just email it to you if you leave your email here. Thanks!

chemestry
A gas is contained in a metal cylinder with a piston, so that the volume of the cylinder can change. If the gas initially occupies volume of 664 ml at 471 mmHg, what will be the volume if the temperature is kept constant and the pressure is changed to 408 mmHg?

math
Please help! :) Garden measures 30x20 Border has a width of x (I've already solved the first part of my problem, in that the width is 3) Border needs to be covered to a depth of 3 inches. Pine bark costs \$29 per cubic yard. What will the material cost to lay the pine bark ...

math
Please help! :) Garden measures 30x20 Border has a width of x (I've already solved the first part of my problem, in that the width is 3) Border needs to be covered to a depth of 3 inches. Pine bark costs \$29 per cubic yard. What will the material cost to lay the pine bark ...

Algebra
How do you graph 2 equations and then find the common area on the graph?

computer science
in mobile phone network how many times as strong would a signal be expected to be at 200 m from a base station, compare with at 600 m? is it 81 or 9 or 3 or 0.3 or 0.1 or 0.01

Chemistry
Balance this equation: Cu + H+(aq) + NO3-(aq) -- Cu2+(aq) + NO2 + H2O

Math
determine if the given function is one-to-one. if it is, find the inverse. f(x) = 8x - 4 A) f-1(x) = x+4 / 8 B) f-1(x) = x-4 / 8 C) Not one-to-one D) f-1(x) = x/8 + 4

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