Sunday
December 8, 2013

# Posts by Lydia

Total # Posts: 151

math
A tie pin which sells for \$200.00 has a markup rate of 30% on the selling price. Find the amount of the markup and the cost.

Mathematics
For the first 1 1/2 hours of a 91km journey the average speed was 30km/h.If the average speed for the reminder of the journey was 23km/h, calculate the average speed for the entire journey.

Chemistry
so is it 3 x 8.314 x (16°C + 273)K / (146.065 molecules / 6.02e23) = 2.970841253e25 ? is that right?

Chemistry
thanks

Chemistry
I have no clue as to how this problem should be solved... could i have some help please? Calculate the rms speed of SF6 molecules at 16°C

physics
At an amusement park, a swimmer uses a water slide to enter the main pool. If the swimmer starts at rest, slides without friction, and decends through a vertical height of 2.40 m, what is her speed at the bottom of the slide?

social studies
whats the difference between indentured and enslaved labor?

politics
What is the difference between nationalism and federalism? Thanks!

english/science
Einstein was offered the presidency of Israel after Chaim Weizmann's death. He declined the position.

science
What exactly is a tax incentive?

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