Use Cramer's rule to solve the linear system.
A. {(9, 7, 2)}
B. {(10, 5, 2)}
C. {(9, -7, -2)}
D. {(7, 2, 7)}
Answer: A
Mathematics
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Factor, if possible.r8 + 40r4 + 400
A. (r4 - 20)2 B. (r4 + 20)(r4 - 20) C. Prime polynomial D. (r4 + 20)2
Mathematics
31/32 - 9/64 =
a. 40/32 b. 40/64 c. 22/64 d. 53/64 e. 22/32
Mathematics
Write the decimal number as a percent. 9.4
A. 940% B. 0.0094% C. 0.94% D. 94%
Mathematics
Divide.
A. 4634.4 B. 4684.4 C. 468.44 D. 488.44
Mathematics