Solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = -2, y = -5
B. x = 5, y = -2
C. x = -2, y = 5
D. Inconsistent
Answer: C
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Divide.(-495) ÷ 99
A. - 
B. -5
C. 5
D. -15
Provide an appropriate response.
Find csc B to the nearest ten-thousandth if a = 14.5, b = 7.8, and c = 16.5. 
A. 1.1379 B. 2.1154 C. 0.4727 D. 0.8788
Use the following diagram of the streets in a residential neighborhood to answer the question. 
A woman walks her dog around the neighborhood each morning. Beginning at her home, point H, is it possible for her to walk along each block of the neighborhood just once and end up back home?
A. No B. Yes
The rate of decomposition of a certain chemical substance is directly proportional to the amount present at any time t. If d0 gr of the chemical are present at time t = 0, find an expression for the amount present d(t) at any time t.
What will be an ideal response?