The graph of g(x) = ax2 opens downward and is narrower than the graph of f(x) = x2. Which of the following could be the value of a?​

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

Katie wants to collect over 100 seashells. she already has 34 seashells in her collection. each day, she finds 12 more seashells on the beach. katie can use fractions of days to find seashells. write an inequality to determine the number of days, dd, it will take katie to collect over 100 seashells.