Simplify.(y9)7
A. 7y63
B. y16
C. 7y9
D. y63
Answer: D
Mathematics
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Find the indicated term of the geometric sequence.a6 when a1 = 9 and r = 5.
A. 28,125 B. 3125 C. 225 D. 140,625
Mathematics
Solve the system. If there is an unlimited number of solutions, find one of them.3x + 2y + z = 42x - 3y - z = 55x + 12y + 5z = 2
A. x = -4, y = 5, z = -2
B. x = 4, y = 5, z = 2
C. Unlimited: x = 
, y = 
, z = 0
D. Inconsistent
Mathematics
Find the sum.-56 + 73
A. 17 B. -17 C. -129 D. 129
Mathematics
Add or subtract.-8.5 - 12.1
A. 3.6 B. 20.6 C. -3.6 D. -20.6
Mathematics