The water level varies from 12 inches at low tide to 52 inches at high tide. low tide occurs at 9: 15 a. m. and high tide occurs at 3: 30 p. m. what is a cosine function that models the variation in inches above and below the water level as a function of time in hours since 9: 15 a. m.?

answer: two angles are called supplementary if they add up to 180°. example: the two angles (140° and 40°) are supplementary because they add up to 180°.

step-by-step explanation:

b because it contains 40% of the possible results from the random list.  

0,1,2,3 v 4,5,6,7,8,9  

4 integers to 6 integers  

40% success vs 60% fail

step-by-step explanation: