exponents: converting to sci. notation, simplifying x * x^-7

[nastydahitman]

1) Express the answer in scientific notation to two decimals: The earth is approx. 92,900,000 miles from the sun. If 1mile = 1.61 x 10^3m, what is the distance to the sun in meters?

2) Simplify: x * x^-7 (Do not use negative exponents in the answer.)

3) Write an equivalent expression using positive exponents: 1/ x^-3

[maggiemagnet]

1) Express the answer in scientific notation to two decimals: The earth is approx. 92,900,000 miles from the sun. If 1mile = 1.61 x 10^3m, what is the distance to the sun in meters?

To learn how to use scientific notation and how to convert regular numbers to scientific notation, try here.

2) Simplify: x * x^-7 (Do not use negative exponents in the answer.)

3) Write an equivalent expression using positive exponents: 1/ x^-3

To learn how to convert to all-positive exponents, try here.

After you've read the lessons, please try the exercises. If you get stuck, please write back showing how far you've gotten. Thanks!