Use half-angle identities to find the exact value of the expression.sin (-112.5°)

A.  
B.  
C. -  
D. -  

Answer: D

Mathematics

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Write the quotient as one base with one exponent.

A. a7
B.
C. a6
D. a

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Determine whether the sequence is arithmetic. If so, find the common difference. ? 7, , 6, , 5, ... ?

A. Arithmetic sequence, d =  -1
B. Arithmetic sequence, 
C. Arithmetic sequence, 
D. Arithmetic sequence, d = -2
E. Not an arithmetic sequence

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Mathematics

Solve.A 12-ft pipe is cut into two pieces. The shorter piece is 6 ft shorter than the longer piece. What is the length of the longer piece?

A. 10 ft B. 9.5 ft C. 9 ft D. 10.3 ft

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Translate the sentence to an inequality.The number will not exceed 2354.

A. x ? 2354 B. x ? 2354 C. x > 2354 D. x < 2354

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Mathematics