Wednesday
December 11, 2013

# Posts by Kathryn

Total # Posts: 139

Trigonometry
this is a propf and I need both sides to equal each other. Thanks this one stumped me. sin^3x/(1-cosx) = sinxcosx+sinx

English Paper
what is the paper supposed to be on, what are you trying to prove in it?

vocab
Notorious: ill-famed: known widely and usually unfavorably hospitable: Hospitality refers to the relationship process between a guest and a host, and it also refers to the act or practice of being hospitable, that is, the reception and entertainment of guests, visitors, or str...

Chemistry
I flipped the second equation around to go with Hess's law which gives me a h value of 359.4 for the second one but I am lost after that.

Chemistry
I am beyond desperate. I do not understand how to calculate heat change at all and I have been looking online and reading my book for the last three hours. Below is posted a problem. It would be amazing if someone could work through it and explain each step they are doing and ...

Math
I am pretty sure that an equation uses an equal sign and an expression does not. Equation: a mathematical statement that two expressions are equal Expression:combination of values, variables, operators, and functions

Social Studies
I think it might be silk but I am not too sure.

Social Studies
According to Procopius two sixth century Christian monks undertook an elaborate smuggling operation to provide Byzantium with the expertise to produce what? A) steel B) iron C) ceramics D) gun powder E) silk

Science (?)
Thank You

Science (?)
What are all the ways humans use rivers? I am writing a report on the relationship between water and organisms and I am now talking about the ways we humans use river. So far I have as a source of transportation, recreation (for boating, fishing, and canoeing), and as a source...

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