The diagram shows the number of instruments in the string section of an orchestra. There are 7 cellos. 4 double basses, and 11 each of first violins, second violins, and violas. Use ratio notation and decimal notation to describe the relationship between the number of double basses and the total number of instruments in the string section. Enter the correct answers in the boxes. Use an overbar for the repeating digits.

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.