What errors did the student make? Check all that apply. The percent values were written incorrectly in the equation. The amount of 7% solution should be written as 1 – x, not x – 1. The equation as written is solved incorrectly. x ≠ 1.17. x must represent the amount of the more highly concentrated solution. The interpretation is incorrect. 1 liter of 2% solution is needed to make 1.17 liters of 3.5% solution.

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.

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

Find the equation of the ellipse with the following properties. the ellipse with foci at (0, 6) and (0, -6); y-intercepts (0, 8) and (0, -8).edit: the answer is x^2 over 28 + y^2 over 64 = 1