Suppose that scores on a knowledge test are normally distributed with a mean of 60 and a standard deviation of 4.3. scores on an aptitude test are normally distributed with a mean of 110 and a standard deviation of 7.1. boris scored a 57 on the knowledge test and 106 on the aptitude test. callie scored 63 on the knowledge test and 114 on the aptitude test. (a) which test did boris perform better on? use z-scores to support your answer. (b) which test did callie perform better on? use z-scores to support your answer. (c) boris also took a logic test. his z-score on that test was . does this change the answer to which test boris performed better on? explain your answer using z-scores.

Which statement about the graph of y = 8(0.25)^2

What is the value of x in the following equation? -3x-2=2x+8

In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d.what is the height of the tide after 93 hours?