Solve the problem.An elementary school has 14 classrooms, each of which can take 28 children. How many children can the school accept for admission?
A. 392
B. 406
C. 402
D. 420
Answer: A
Mathematics
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Find the exact solution to the equation without a calculator.6 arcsin x = ?
A. x = ±
B. x = 2
C. x = -5 + 3
D. x = 
Mathematics
Write out the sum.
A. 13 + 17 +21+ ... + (4n + 9) B. 9 + 13 + 17 + ... + (4n + 5) C. 9 + 13 + 17 + ... + (4n + 9) D. 13 + 17 + 21 + ... + (4n + 5)
Mathematics
Is f continuous at ?2 ?
Mathematics
Provide an appropriate response.When the numerator is the same as the denominator, for example 
, the fraction is called a(n) 
fraction.
A. whole B. proper C. uncommon D. improper
Mathematics