What is the probability that a single randomly selected online transaction from the current week is from a customer that is less than 31 years old? Enter the probability below IF it can be computed with the given information/data. Enter "DNE" if the question cannot be answered with the given information/data. HINT: Be sure you look at the distribution of the data.

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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.