In kendra’s class, 40 percent of the students earned an a on the math test. twenty students earned an a. kendra needs to find out how many students are in her class. kendra’s work is shown below. 40 / 2 = 20 100 x 2 = 200 what mistake did kendra make? (the / is meant as a division symbol) a. kendra should have multiplied by 4 in both the numerator and the denominator. b. kendra should have divided by 2 instead of multiplying by 2 in the denominator. c. kendra should have added 40 and 20. d. kendra should have the part to whole equation written as 100/40 (100 over 40)

Which of the following represents the zeros of f(x) = 6x3 − 31x2 + 4x + 5? −5, one third , one half 5, − one third , one half 5, one third , − one half 5, one third , one half

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.

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?