For the curve r(t), find an equation for the indicated plane at the given value of t.r(t) = (t - 5)i + (ln(sec t) - 4)j + 10k, -?/2 < t < ?/2; normal plane at t = 8?.
A. x = -8? - 5
B. x = 5 - 8?
C. x = 8? + 5
D. x = 8? - 5
Answer: D
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Provide an appropriate response.Simplify the power of i52
A. i B. -1 C. 1 D. -i
Solve the following system of equations using the addition method. If both variables cancel out, state your solution as no solution or infinitely many solutions.-0.8x - 0.2y = 4.4-0.5x + 0.1y = 2.3
A. (-50, -20) B. (-5, -2) C. (-2, -5) D. no solution
Suppose the National League team has a probability of 
of winning a World Series game and the American League team has a probability of 
. The series is over as soon as one team wins four games.
Find the probability that the series is over in seven games. ? A. 0.1518 B. 0.2718 C. 0.1318 D. 0.1438 E. 0.1294
Find 
by implicit differentiation.
?
?
A. 
B. 
C. 
D. 
E. 