Identify the equation as either an identity or not.
= tan t
A. Not an identity
B. Identity
Answer: A
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Perform the calculation. Express the answer in degree-minutes-seconds format.90° - 9°11'
A. 81°49' B. 80°11' C. 81°11' D. 80°49'
Factor a negative number or a GCF with a negative coefficient from the polynomial.-8x4 + 12x3 - 4x2
A. -4x2(2x2 + 3x + 1) B. -4x2(2x2 - 3x + 1) C. -4x2(2x2 + 3x - 1) D. -4x2(2x2 - 3x - 1)
Solve the problem.Three different high schools plan to order the same three text books. School A plans to order 90 of book 1, 20 of book 2, 80 of book 3. School B plans to order 60 of book 1, 20 of book 2, 20 of book 3. School C plans to order 80 of book 1, 100 of book 2, 70 of book 3. The cost of book 1 is $15 per copy, the cost of book 2 is $20 per copy, and the cost of book 3 is $25 per copy. What matrix product displays the cost to each school of buying the textbooks? Display the two matrices which must be multiplied and their product.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Solve. Round your answer to the nearest tenth, if necessary.The length of a rectangular storage room is 5 feet longer than its width. If the area of the room is 50 square feet, find its dimensions.
A. Width is 4 feet; length is 11 feet B. Width is 5 feet; length is 10 feet C. Width is 6 feet; length is 11 feet D. Width is 4 feet; length is 9 feet