Use Cramer's rule to solve the system of linear equations.2.8x + 2.3y = 43.62.5x - 1.2y = 12.9
A. (-8, 9)
B. (8, 9)
C. (-9, -8)
D. (9, 8)
Answer: D
Mathematics
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Evaluate the integral.
dx
A. 9
5/4 + C
B. 
5/4 + C
C. 
5/4 + C
D. - 6
-3/4 + C
Mathematics
Solve by completing the square. If the equation has no real solutions, write "no real-number solutions."x2 - 7 = -8x
A. 4 + 
B. -4 ± 1
C. no real-number solutions
D. -4 ± 
Mathematics
Find the common ratio, r, for the geometric sequence.
, 
, 
, 
, 
, . . .
A. 4 B. 16 C. 2 D. 6
Mathematics
Solve the problem.Jim and Tammi climbed to the top of a 26,400-ft mountain. How many miles did they climb?
A. 5 mi B. 5.5 mi C. 10 mi D. 6 mi
Mathematics