Wednesday
December 11, 2013

# Posts by Alejandra

Total # Posts: 74

us history
How important are Edison's inventions in American life today?

us history
Why did railroads and the telegraph expand together?

geometry
given triangle ABC is congruent to triangle PQR, AB = 38 .QR = 28 and PQ = 5x+8 . find x value

geometry

CHEMISTRY
A sample of C3H8 has 2.64 x 10^24 atoms. How many carbon atoms does the sample contain? What is the total mass of the sample?

Chemistry
A sample of C3H8 has 2.64 x 10^24 atoms. How many carbon atoms does the sample contain? What is the total mass of the sample? I dont even know where to start i mean it seems like a really simple question but the prof hasnt been through this topic. Im working a bit ahead just t...

science
whats a meteorite?

geometry
If AD is 10 units AB is 8 units AC is 12 is units ED is 4.5 units and if AED is 100 degrees what is the measure of DC

Algebra
I do not Know

math (comparing ratios)
the question says →4 feet to 4 inches and i have to do it in simplest form

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