Topic Test Answers

A chord consists of notes that sound good together. The C major chord, starting at middle C, has the following frequencies:C - 262 HzE - 330 HzG - 392 HzDetermine the ratio of the frequency of G to E. Express the answer in a simple integer ratio. (Due to rounding the ratio will be approximate.)

The tide is the regular rising or falling of the ocean’s surface. This is due in large part to the gravitational forces of the moon. The following table represents water level of the tide off the coast of Kings Point, N.Y., for a 24 hour period, February 9th through February 10th of 2009.HourMeasurement in feet above the average low tide0-0.9825.8347.7867.3482.3310-0.4712-0.21145.32168.83188.31203.8022-0.28240.53Plot the data points given in the table using hour as the independent variable. Does this data indicate that a sine regression may be appropriate in this case? Explain.

What is cos()? Sketch a graph to help determine the answer.

According to the Americans with Disabilities Act, a ramp can rise no more than 1 ft for every 12 ft of horizontal distance. What is the maximum angle that the ramp can form with the ground?