Identify the pairs of complementary or supplementary angles, as indicated.Complementary

A. ?FBE & ?EBD; ?ABF & ?CBD
B. ?CBE & ?EBA
C. ?CBD & ?DBE; ?ABF & ?FBE
D. ?ABF & ?FBE

Answer: C

Mathematics

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Find a matrix A and a column matrix B that describe the following tables involving credits and tuition costs. Find the matrix product AB, and interpret the significance of the entries of this product.?

A.
AB =
The number of credits for Student 1 is 17, the number of credits for Student 2 is 15, and the number of credits for Student 3 is 12.
B.
AB =
The number of credits for Student 1 is 12, the number of credits for Student 2 is 17, and the number of credits for Student 3 is 15.
C.
AB =
Tuition for Student 1 is $890, tuition for Student 2 is $790, and tuition for Student 3 is $640.
D.
AB =
Tuition for Student 1 is $790, tuition for Student 2 is $640, and tuition for Student 3 is $890.