Determine if the equation is an identity.cos(x - y) cos y - sin(x - y) sin y = cos y
A. Not an identity
B. Identity
Answer: A
Mathematics
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Perform the indicated operation without the use of a calculator and express each answer in decimal notation.
A. 29,400,000,000,000 B. 600,000 C. 29,400,000 D. 600,000,000,000
Mathematics
Simplify.
A. 12
B. 72
C. 20
D. 12
Mathematics
Look for a pattern and then predict the general term, or nth term, an, of the sequence.
, 
, 
, 
, 
, . . .
A. an = 
B. an = 
C. an = 
D. an = 
Mathematics
Find the quantity indicated.y varies directly as z2. If y = 288 when z = 6, find y when z = 4.
A. y = 24 B. y = 192 C. y = 128 D. y = 48
Mathematics