You want to estimate the mean SAT score of all college applicants with margin of error of 15. You know the standard deviation of SAT scores is historically 100. Find the sample size needed to estimate the mean with 90% confidence. Critical Values: Z0.05 1.645 Z0.025 = 1.96 Z0.01 = 2.325 Z0.005 = 2.575

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )

What is the area of the parallelogram? 48 sqrt(3)cm2 48 cm2 24 sqrt (3) cm2 24 cm2

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