Find the perimeter.
A. 278 in.
B. 362 in.
C. 383 in.
D. 329 in.
Answer: C
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Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = 7i - 5i + 6k, v = 0
A. 
; 
(7i - 5i + 6k)
B. 0; 7i - 5i + 6k
C. 0; no direction
D. 0; 
(7i - 5i + 6k)
Evaluate the definite integral. Express the answer in terms of natural logarithms.
A. ln(
+ 3)
B. ln(
+ 2)
C. ln
D. ln(
+ 
)
Solve the equation.4x2 - 5x - 9 = 0
A. x = 
, -1
B. x = 
, 1
C. x = 
, 0
D. x =
, -1
Solve the problem.A water wheel rotates through the angle ?, the water level L behind the wheel changes according to the equation L = 1 - sin ? - 2 cos2 ?where L is measured in inches. Determine the values of ? for which the water level is zero. Find the exact values. Do not use a calculator.
What will be an ideal response?