Complete the identity.2 tan ? - (1 + tan ?)2 = ?

A. 0
B. -sec2 ?
C. 1 - sin ?
D. 1


Answer: B

Mathematics

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Evaluate the integral by using multiple substitutions. dt

A.  + C
B. -  + C
C. -  + C
D.  + C

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The histogram shows the scores of each participant in a game from a total of 100 participants. What is the ratio of participants who score 80-99 to the total number of participants?

A.
B.
C.
D.

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Write the decimal in words.0.99

A. ninety-nine ten-thousandths B. ninety-nine tenths C. ninety-nine hundredths D. ninety-nine thousandths

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Solve the exponential equation. Round to three decimal places when necessary.e-0.12t = 0.19

A. -11.779 B. 13.839 C. -20.59 D. 10.601

Mathematics