: Let R(A, B,C, D) be a relation, where (A, B) is the Primary Key for R, attribute C is Unique and can be NULL, and attribute D is Unique and cannot be NULL. Attribute A’s domain has 3 different values, B’s domain has 8 different values, C’s domain has 5 different values, and D’s domain has 10 different values. What is the maximum number of different tuples that can be in an instance of R?

step-by-step explanation:

their are no angles. sorry cant .

beluga wheeeaaalle matt

step-by-step explanation:

a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

step-by-step explanation:

-3.5 degrees per hour

step-by-step explanation:

find the unit rate:

-12   1/4 degrees           12.25 degrees

= - = -3.5 degrees per hour

      3   1/2 hours               3.5 hours