Determine if the equation is an identity.sin(x + y) - sin(x - y) = 2 cos x sin y
A. Identity
B. Not an identity
Answer: A
Mathematics
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Determine whether the statement is true or false.For any prime number p except 2, either Fp+1 or Fp-1 is divisible by p. Fn represents the nth term of the Fibonacci sequence.
A. True B. False
Mathematics
Find the conditional probability.If two fair dice are rolled, find the probability that the numbers rolled form a "double" given that their sum is 11.
A. 
B. 
C. 
D. 0
Mathematics
Write the number using digits.six hundred thirty-eight thousand, nine hundred ninety-seven
A. 638,997,000 B. 638,977 C. 638,997 D. 638,000
Mathematics
Add and simplify.
+ 
A. 
B. 
C. 
D. 2
Mathematics