Convert as indicated.480 sec =    min

A. 20
B. 8
C. 4
D. 15

Answer: B

Mathematics

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y?? ? 4y? + 20y = 0, y (0) = 5, y?(0) = 2

Solve the initial-value problem.

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Construct a truth table for the compound statement.~(r ? t) ? ~(t ? r)

A.

B.

C.

D.

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Multiply and simplify. ?  

A.
B.
C.
D. y

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