(6.9x10^5)x(3.1x10^-9) write answer in scientific notation, thank you!

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?

Which question is not a good survey question? a.don't you agree that the financial crisis is essentially over? 63on average, how many hours do you sleep per day? c. what is your opinion of educational funding this year? d.are you happy with the availability of electronic products in your state?