Solve the system of equations using substitution.
A. x = -8, y = -5 or (-8, -5)
B. x = -8, y = 5 or (-8, 5)
C. x = 8, y = -5 or (8, -5)
D. x = 8, y = 5 or (8, 5)
Answer: D
Mathematics
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Express 11,200 V in terms of KV.
What will be an ideal response?
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Solve.The inmedance Z in an alternating current circuit (like the one used in your home and in your classroom) is given by the formula Z = 
, where V is the voltage and I is the current. Find the value of Z if 
and 
A. -3 - 
i
B. 
+ 3i
C. 3 + 
i
D. - 
- 3i
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Perform the operation indicated. Simplify.
- 
A. - 
B. 
C. - 
D. 
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Find the inverse, if it exists, for the matrix.
A. 
B. 
C. 
D. The inverse does not exist.
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