there are 74 children at a camp . there are 38 girls. the rest are boys. how many boys are at the camp
2 answers:
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To complete the identity, we need these fundamental identities:
Thus, by identity 1 we have:
by identity :
recall the values :
,
so:
Putting all these together, we have:
which is equal to
, by identity 3
Answer: D
Thus, by identity 1 we have:
by identity :
recall the values :
so:
Putting all these together, we have:
which is equal to
Answer: D