Determine whether the matrices are inverses. 
, 
A. Yes
B. No
Answer: B
Mathematics
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Determine whether the statements are logically equivalent.~(~p ? q), p ? ~q
A. Equivalent B. Not equivalent
Mathematics
Solve the problem.The manager of a coffee shop has one type of coffee that sells for $8 per pound and another type that sells for $15 per pound. The manager wishes to mix 60 pounds of the $15 coffee to get a mixture that will sell for $11 per pound. How many pounds of the $8 coffee should be used?
A. 70 lb B. 140 lb C. 80 lb D. 40 lb
Mathematics
Determine whether the sequence is geometric.an = 4-n
A. Geometric B. Not geometric
Mathematics
Decide whether or not the matrices are inverses of each other.
and 
A. Yes B. No
Mathematics