Verify that the matrix is invertible and find its inverse.A = 
A.
A-1 = 
B.
A-1 = 
C.
A-1 = 
D.
A-1 = 
Answer: A
Mathematics
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Find the simple interest. (The rate is an annual rate unless otherwise noted. Assume 360 days in a year.)p = $500, r = 8%, t = 2 years
A. $31.25 B. $2000.00 C. $80.00 D. $8.00
Mathematics
Write the expression as a single logarithm. Leave your answer in simplest form without negative or fractional exponents.
(logbx6 + logb y7)
A. logb
B. logb
C. logb
D. logb
Mathematics
Perform the indicated operation. Simplify your answers. 
+ 
A. 
B. 
C. 
D. 
Mathematics
Evaluate the expression.a2 - 14(a - b), for a = 16 and b = 5
A. 179 B. 27 C. 102 D. 2662
Mathematics