For the curve r(t), find an equation for the indicated plane at the given value of t.r(t) = (cosh t)i + (sinh t)j + tk; rectifying plane at t = 0.
A. x = 1
B. x - y = 1
C. x - y = -1
D. x = -1
Answer: A
Mathematics
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Perform the indicated operation. Write the result in the form a + bi.(
- 
i) + (
+ 
i)
A. - 
+ 
i
B. 
- 
i
C. 
- 
i
D. 1 + i
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Use a graphing calculator to find the graph of the equation.y = -(x + 1)4 - 5
A. 
B. 
C. 
D. 
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Solve the system.5w + x - 5y + z = -22-w + 5x + y - 5z = -23w - x + 5y + 5z = 28 w + x - 5y - z = -28
A. (3, -8, 0, 3) B. (-3, -6, 12, 3) C. (3, -4, 6, -3) D. (-4, 2, 7, 1)
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Find the midpoint of the segment PQ.P(3, -3, 4), Q(4, -2, 3)
A. 
B. 
C. 
D. 
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