Wednesday
December 11, 2013

# Posts by Cris

Total # Posts: 55

chemistry
How many moles of sodium hydroxide are produced when 0.155 mole of sodium reacts with excess water?

Statistics
What do you mean "Z" scores in relation to the problem above? sorry, I'm totally confused and overwhelmed

Algebra

Problem Solving
Thanks a lot Steve. Ur an angel.

Problem Solving
John bought a shirt on sale for 25% off the original price and another 25 % off the discounted price. If the final price was \$16, what was the price before the first discount? (Please i need to present it to our school. I dont know how to solve it. Can you post step by step?)

Problem Solving
During a storewide sale, a TV which usually sells for \$450 is on sale for \$360. A Stereo which usually sells for \$600 is on sale for \$480. What would be the sale price of a VCR which usually sells for \$500?

Problem Solving
John bought a shirt on sale for 25% off the original price and another 25 % off the discounted price. If the final price was \$16, what was the price before the first discount?

Math
determine the intervals over which the function is increasing, decreasing, or constant f(x)=√x^2-1

Calculus
I'm trying to finish up my pre-cal homework and I am stuck on 2 problems... ***determine the intervals over which the function is increasing, decreasing, or constant*** 32. f(x)=x^2-4x 33. f(x)=√x^2-1 (that's square root of x^2-1) thank you so much for the help =)

chemistry
Calculate the volume needed to dissolve 11.2g CuSO4 to prepare 0.140M?

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