Solve.In an electric circuit, the electromotive force is defined as V = cos 2?t, where t is time in seconds. Solve the equation for t.
A. t = 2? arccos V
B. t = 
arccos V
C. t = 
cos V
D. t = 2? cos V
Answer: B
Mathematics
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What kind of angle is ?CBD?
(a) obtuse
(b) acute
(c) equilangular
(d) right
Mathematics
Graph the equation using a graphing utility. Use a graphing utility to approximate the intercepts rounded to two decimal places, if necessary. Use the TABLE feature to help establish the viewing window.y = -2x + 15
A. (0, -15), (7.5, 0) B. (0, 15), (7.5, 0) C. (0, 15), (-7.5, 0), (7.5, 0) D. (0, 15), (-7.5, 0)
Mathematics
Find the inverse of the matrix.
A. 
B. 
C. 
D. No inverse
Mathematics
Find the x- and y-intercepts. If no x-intercepts exist, state so.f(x) = 2x2 + 1x - 21
A. (3, 0), (- 
, 0), (0,-21)
B. (-7, 0), (
, 0), (0,-21)
C. (3, 0), (
, 0), (0,21)
D. (-7, 0), (
, 0), (0,21)
Mathematics