A pendulum of length 16 feet hangs from the ceiling. Let 
represent the gravitational acceleration. The correct linearized differential equation for the angle, 
, that the swinging pendulum makes with the vertical is
Select the correct answer.
?
A. 
B. 
C. 
D. 
E. 
Answer: B
Mathematics
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Find an equation for the ellipse.Center at (0, 0); focus at (0, -6); vertex at (0, 7)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Calculate the slope of the line passing through the given points. If the slope is undefined, so state. Then indicate whether the line rises, falls, is horizontal, or is vertical.(7, 1), (-7, -6)
A. - 6, falls
B. 
, rises
C. - 
, falls
D. 2, rises
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Factor.x2 + 9x - 22
A. (x + 11)(x - 2) B. (x - 11)(x + 1) C. prime D. (x - 11)(x + 2)
Mathematics
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cot ? = -3, sec ? > 0Find cos 
.
A. 
B. - 
C. 
D. - 
Mathematics