Solve and show your work for each question.
what is 0. 45 expressed as a fraction in simplest form?
what is 0.45 expressed as a fraction in simplest form?
what is 0.45 expressed as a fraction in simplest form?

show your work

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?

How can you find the mean absolute deviation (mad) for this set of data?