Round each decimal number to the nearest tenth.
12.63

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.