Wednesday
June 19, 2013

# Posts by Davis

Total # Posts: 91

trig
How do you know by looking at them?

trig
Suppose that 0degrees<theta<180degrees. what is the sign of each of the following? a) cos theta/2 b)sin(-theta)

Chemistry
You would use gay-lussac's law. P1/P1 = P2/P2 SO you plug your values in and get... (660 torr)/(20celsius) = (? torr)/(40celsius) .... (26400 torr/celsius) = (20celsius)(? torr) then divide by 20 degrees celsius and then you get 1320 torr as your answer.

Chemistry
THE VOLUME WOULDN'T HAVE ANY EFFECT ON THE TEMPERATURE. FOR A GAS IN A CLOSED CONTAINER, WITH THE PRESSURE CONSTANT THE TEMPERATURE DOESN'T CHANGE THE VOLUME. WHEN TEMPERATURE INCREASES, PRESSURE INCREASES. THEY ARE DIRECTLY PROPORTIONAL.

trig
Use the appropriate identity to find tan(theta) given that cot theta =0.05.

trig
Use trigonometric identities to find sec theta, given that tan theta = Radical 5/ 3.

trig
Suppose that 0degrees<theta<180degrees. what is the sign of each of the following? a) cos theta/2 b)sin(-theta)

Physical Science
addition&subtraction= round to least number of decimal places multiplication&division=round to least number of significant figures present.

science
use conversion factor. 3.5in X 1cm _____ = 1.4 cm 2.54 in. round to two significant figures. answer is= 1.4cm

english
Which of the following sentences contains an error? A) The student's attitude did not help her succeed. B) How many students are you planning to hire? C) Student's need to work hard if they want to receive good grades. D) Students' votes are important in determinin...

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