Find the value of E.
VR = 12 V, R1 = 7 Kê, R3 = 3 Kê, and I1 = 15 mA.
2
a. 12 V
b. 24 V
c. 93 V
d. 105 V
e. 117 V
e. 117 V
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Multiply or divide as indicated. Write the answer in lowest terms.
÷ 
A. 1
B. 
C. 
D. 
Given matrices A and B, find the indicated matrix if possible.A = 
, B = 
Find AB.
A. 
B. AB is not defined.
C. 
D. 
Use the graph of f to determine the intervals where f is increasing and where f is decreasing.
A. increasing: (-?, 0]; decreasing [0, ?) B. increasing: [0, ?); decreasing (-?, 0] C. increasing: (-?, ?); decreasing: never D. increasing: never; decreasing: (-?, ?)
Find the vertex, focus, and directrix of the parabola with the given equation.(y - 2)2 = -8(x - 4)
A. vertex: (2, 4) focus: (0, 4) directrix: x = 4 B. vertex: (4, 2) focus: (2, 2) directrix: x = 6 C. vertex: (4, 2) focus: (6, 2) directrix: x = 2 D. vertex: (-4, -2) focus: (-6, -2) directrix: x = -2