Metal A has a density of 11.9 g/cm3. 30 g of metal A is combined with metal B to create an alloy with mass 130 g and density 9.5 g/cm3.
What is the density of metal B?
Round your answer to 2 decimal places.

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

When turned about its axis of rotation, which shape could have created this three-dimensional object?

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.