An investor has an account with stock from two different companies. last year, her stock in company a was worth $5990 and her stock in company b was worth $2450. the stock in company a has decreased 20% since last year and the stock in company b has decreased 8%. what was the total percentage decrease in the investor's stock account? round your answer to the nearest tenth (if necessary).

What is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.