## ikshjbdckoj Group Title Simplify. Write in scientific notation. (9 × 10^–3)^2 one year ago one year ago

1. Zelda

12345.67901 or in scientific, it is equal to: 1.234567901*10^5

2. ikshjbdckoj

were did all those numbers come from??

3. ikshjbdckoj

is it 8.1 x 10^-5

4. Zelda

Sorry, i read that as a -2 in the end, and yea, what you got is right.

5. ikshjbdckoj

okay good :) now here is the most hard one.$Evaluate \frac{ 1 }{ 2} a ^{-4} b ^{2} for a = –2 and b = 4.$

6. Zelda

What did I say about using the equation editor? Math ONLY. Anyhow, just plug in for the calculator and you get: $-.2$ or $-\frac{ 1 }{ 5 }$

7. ikshjbdckoj

neither of those are my options. 2 $\frac{ 1 }{ 2 }$ 3 4

8. Zelda

Hmm, can I see the original question then? Like a pic?

9. Zelda

Actually, I see. Your writing messed me up again. It should be 1/2.

10. ikshjbdckoj

8. Is the following statement always, never, or sometimes true? A number raised to a negative exponent is negative. always never sometimes