Mr. brown shares with the class that 70% of the students got an a on the english vocabulary quiz. if mr. brown has 100 students, create a model to show how many of the students received an a on the quiz.
a. what fraction of the students received an a on the quiz?
b. how could we represent this amount using a decimal?
c. how are the decimal, the fraction, and the percent all related?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

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.

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?