Write the expression using a single exponent.63 ? 69 ? 64
A. 216108
B. 616
C. 6108
D. 21616
Answer: B
Mathematics
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Solve by the substitution method. x - 4y = 4-3x - 3y = 3
A. {(1, -2)} B. {(1, 0)} C. ? D. {(0, -1)}
Mathematics
Simplify.214 ÷ 28 ? 22 ÷ 24
A. 1,024 B. 1 C. 256 D. 16
Mathematics
Solve.A rotating beacon is located a distance d from a long wall. The distance d is given by 
, where t is the time measured in seconds since the beacon started rotating. Solve the equation for t.
A. t = 
arctan 
B. t = 2? arctan 
C. t = 2? tan 
D. t = 
tan 
Mathematics
Find the range for the given data items.9, 10, 11, 12, 13
A. 11 B. 4 C. 9 D. 13
Mathematics