Find the direction angles of the vector. Round to the nearest degree, if necessary.v = -2i + 3j - 4k
A. ? = 119°, ? = 43°, ? = 166°
B. ? = 115°, ? = 51°, ? = 147°
C. ? = 113°, ? = 55°, ? = 140°
D. ? = 112°, ? = 56°, ? = 138°
Answer: D
Mathematics
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In the circuit below, Vin = 15 V and R = 5 Kê. What are VO and XC at fCO?
a. XC = 7.07 Kê, VO = 21.2 V
b. XC = 7.07 Kê, VO = 15 V
c. XC = 5.05 Kê, VO = 15 V
d. XC = 5.00 Kê, VO = 10.6 V
e. XC = 3.5 Kê, VO = 10.6 V
Mathematics
Write the mixed number as an improper fraction.20
A. 200
B. 
C. 30
D. 
Mathematics
Factor the trinomial, if possible.64m2 - 144m + 81
A. (8m - 10)2 B. (8m + 9)2 C. (8m - 9)2 D. (8m + 9)(8m - 9)
Mathematics
Divide.Divide 126 by -0.0021
A. -60,000 B. -2.1 C. -6000 D. -30,000
Mathematics