Question 2
1 pts
Which explains how to show that u
is a root of 9.x2 + 48x + 64 = 0?
Substitute 2 =
back into 9x² + 480 + 64 = 0 and simplify to show the values of a and cremain perfect squares.
O Graph 9x2 + 48x + 64 = 0 to show that the parabola's vertex is just above the value x =
CO100
O Graph 9x2 + 48x + 64 = 0 to show that x = - is where the parabola crosses the y-axis.
O Substitute 2 =
back into 9x2 + 48x + 64 = 0 and simplify to show that a true statement results.
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.
Abag of jelly beans contain 13 pink, green, 20 yellow, 10 black, 7 red, and 11 orange jelly beans. approximately what percent of the jelly beans are pink and yellow?