# 2 Simple Questions

• Jan 16th 2009, 05:18 PM
qbkr21
2 Simple Questions
• Jan 16th 2009, 05:30 PM
skeeter
first question is marked correctly ... use the Pythagorean theorem to answer the second question.
• Jan 16th 2009, 05:45 PM
qbkr21
RE:
1) For some reason the system indicates that there is more than one answer. Do you see any more answers?

2) I knew it was Pyth. Theorem so I wrote a^2+b^2 and the system counted it wrong. (Worried)
• Jan 16th 2009, 06:10 PM
vincisonfire
1. Since the system catches ±1%, you should write everything that in the range 7.29109 ± 1% = 7.29109 ± 0.0729109 = [7.21818 , 7.364].
You should thus add the third and last choice.
2. Maybe it is a "vector space" and the system wants to hear a+b and not the magnitude a^2+b^2. However, the way it is asked I agree your answer is right.
• Jan 16th 2009, 06:40 PM
qbkr21
RE:
THAT helped out a whole whole lot.

Thanks (Happy)
• Jan 16th 2009, 06:46 PM
Prove It
Quote:

Originally Posted by qbkr21
THAT helped out a whole whole lot.

Thanks (Happy)

For b) it's actually $\sqrt{x^2 + y^2}$.