How do i divide by powers of 10 in my TI-30XA calculator?

Use the rules for exponents and you will calculate it by hand
(1*10^-14)/(5*10^-12)=(1/5)*10^(-14+12)= 0.2*10^-2=2*10-3
To enter powers of 10 use the short-cut key [EE]
For example to enter 6.02*10^23 type in 6.02* [EE] 23. When you use the EE key, the base (10) should not appear.

The TI-30XA calculates logarithms to base e and base 10. You can calculate the log of x to any base b by calculating the logarithm of x and dividing it by the logarithm of b: log(x)/log(b) or ln(x)/ln(b).

The TI-30Xa has a "y^x" key located just above the divide key. To calculate 1.009 to the 17th power, press 1 . 0 0 9 y^x 1 7 =

The y^x button is located along the right edge of the keyboard, just above the divide key.

Almost exactly the way you wrote it. Press
1 0 * 2 y^x 3 6 =

* is the multiply key just below the divide key, y^x is the key just above the divide key.

7 LOG / ( 6 * 7 LOG - 2 LOG ) =

To raise 1.04 to the fifth power, press
1 . 0 4 y^x 5 =

y^x is the key just above the divide key.

Well it depends on what you are wanting to do.

1. Graphing- get a graphing calculator!
2. logistics- for log base 10, just divide the number by 10.
3. ln- divide the # by the number e (roughly 2.72)
4. sine, cosine, and tangent- there should be a "SIN", "COS", and "TAN" button, if not the ratio for each, respectivly is opposite/hypotnenuse, adjacent/hypoteneuse, and opposite/adjacent. (The opp/adj being side opp or adj of angle you are doing)
5. Just Ask your teacher!

type in

(8.99 * 10^(-8))/.738

you should get

.00001218157 or 1.128157 * 10^(-5)

Because this calculator does not allow you to enter formulas, you have to alter the formula a bit.

Instead of entering 3.55*10^24, enter (10^24)*3.55

Note: 10^24 is 10 to the 24.

Here is the procedure:
1) find 10^24. Do this by typing 10, pressing the yx button (which is right above the divide button), and then typing 24. Press the '=' button.

2) multiple the result by 3.55. Press the '=' button.

You now have the answer.