Simplify.
A. 
B. 1
C. -1
D. 
Answer: D
Mathematics
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Solve the problem.Technology matrix A, representing interindustry demand, and matrix D, representing consumer demand for the sectors in a three-sector economy, are given. Use the matrix equation 
to find the production level X that will satisfy both demands.A = 
, D = 
A.
X = 
B.
X = 
C.
X = 
D.
X = 
Mathematics
Change the exponential expression to an equivalent expression involving a logarithm.73 = x
A. log3 x = 7 B. log7 3 = x C. log7 x = 3 D. logx 7 = 3
Mathematics
Match the system of equations with one of the graphs.x2 - y2 = 25x2 + y2 = 81
A. 
B. 
C. 
D. 
Mathematics
Write the opposite of the number.0.342
A. - 
B. 
C. - 0.342
D. 
Mathematics