A pair of similar triangles is shown. Find the measure of the segment marked with the letter x.
A. x = 12
B. x = 7
C. x = 21
D. x = 28
Answer: C
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Determine the truth value of the following statement.Assume that p has a truth value of 0.32, and q has a truth value of 0.58. ~(p ? q)
A. 0.32 B. 0.68 C. 0.58 D. 0.42
Write the expression as the logarithm of a single number or expression with a coefficient of 1. Assume all variables represent positive numbers.log 15 - log 5
A. log 
B. log 8
C. log 10
D. log 3
Write the complex number in polar form. Express the argument in degrees, rounded to the nearest tenth, if necessary.-5i
A. 5(cos 90° + i sin 90°) B. 5(cos 0° + i sin 0°) C. 5(cos 270° + i sin 270°) D. 5(cos 180° + i sin 180°)
Ohm's Law for the current I in a circuit with voltage E, resistance R, capacitance reactance XC, and inductive reactance XLis 
Use this law to solve the problem.Find XCif I = 6 - 2i, E = 5 - 5i, R = 9, and 
A. 
+ 8i
B. - 
- 8i
C. - 
+ 8i
D. 
- 8i