Simplify.
3
A. - 
B. - 
C. - 
D. 
Answer: B
Mathematics
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Solve the problem.In electronics, the impedance Z of an alternating series circuit is given by the formulaZ = 
, where R is the resistance and X is the reactance, both in ohms. Find the value of the impedance Z if 
and X = 48 ohms.
A. 28 ohms B. 52 ohms C. 68 ohms D. 44 ohms
Mathematics
Find the vertices and graph the hyperbola.12y2 - x2 = 36
A. (-
, 0), (
, 0)
B. (0, -
), (0, 
)
C. (-3, 0), (3, 0)
D. (0, -3), (0, 3)
Mathematics
For the given slope of line l1, (a) find the slope of line a l2 parallel to l1, and (b) find the slope of a line l3 perpendicular to l1.m = 4
A. (a) 4; (b) - 
B. (a) 
; (b) - 4
C. (a) 12; (b) - 
D. (a) - 4; (b) - 
Mathematics
Simplify the expression.
A. - 25
B. 
C. - 
D. 25
Mathematics