Write an expression so that the quotient of a decimal and a whole number is 0.04.
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What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?