Simplify
21x^6y^4/14x^2y9

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

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?