Find an algebraic expression equivalent to the given expression.sec (arccot 
)
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.A satellite is to be put into an elliptical orbit around a moon. The moon is a sphere with radius of 578 km. Determine an equation for the ellipse if the distance of the satellite from the surface of the moon varies from 490 km to 261 km.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Factor.15z4 - 8z2 - 16
A. (3z2 + 4)(5z2 - 4) B. (5z2 + 4)(3z2 - 4) C. (5z4 + 4)(3z - 4) D. (3z4 + 4)(5z - 4)
Solve the proportion.
= 
A. x = 
B. x = 
C. x = 
D. x = 
A farmer wants to enclose a rectangular field along a river on three sides. If 3,600 feet of fencing is to be used, what dimensions will maximize the enclosed area?
A) 900 ft (parallel to the river) by 900 ft B) 900 ft (parallel to the river) by 1,800 ft C) 1,800 ft (parallel to the river) by 900 ft D) 1,800 ft (parallel to the river) by 1,800 ft