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Jiang

Questions (9)

If z=r^2 tan^2(theta),x=r cos(theta),y=r sin(theta),find the {partial^2 z}/{partial(x)partial(y)}
1. 1 answer
2. 510 views
12 yards 2 feet 6 inches to metres.houw can i convert it in a easy way?
1. 0 answers
2. 365 views
Briefly describe why ribsomes would be located on the endoplasmic reticulum
1. 0 answers
2. 386 views
Explaini why the observation if a preciiitate forming may be evidence of a chemical reaction.What other evidence would youneed
1. 0 answers
2. 450 views
Briefly explain why it is important to know how cells function
1. 0 answers
2. 361 views
Identify two advantages of the modern system of symbols used to represent th elements.
1. 5 answers
2. 2,194 views
a negative charged atom is called an ion.is this statement right?if not how can i fix it?
1. 1 answer
2. 967 views
The message to produce specific protein is carried from the DNA to the ribosome by means of_________.what should i write in the
1. 1 answer
2. 408 views
Is this statement ture?if not,how can i fix it?The particle model of matter proves that atoms and molecules exist.
1. 1 answer
2. 500 views