Use the Gauss-Jordan method to solve the system of equations. If the system has infinitely many solutions, give the solution with y arbitrary.4x - 2y - 10 = 08x + y - 25 = 0
A. ?
B. 
C. 
D. 
Answer: D
Mathematics
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Provide an appropriate response.(a) If A is the coefficient matrix of the system 
, determine A-1.(b) Use A-1 to solve the system.
What will be an ideal response?
Mathematics
Solve the equation on the interval 0 ? ? < 2?.cos ? = sin ?
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation.16 lb 14 oz + 31 lb 10 oz
A. 47 lb 8 oz B. 48 lb 9 oz C. 47 lb 9 oz D. 48 lb 8 oz
Mathematics
Express the statement as an equation involving the indicated variables.The area A of a rectangle is the product of its length l and its width w.
A. A = l + w
B. A = 
C. A = 2(l + w)
D. A = lw
Mathematics