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