Solve the problem. Round to two decimal places if needed.A sector of a circle has an area of 72 square feet. Find the central angle (in degrees) that forms the sector if the radius is 3 feet.
A. 18,573.25°
B. 37,146.5°
C. 917.2°
D. 458.6°
Answer: C
Mathematics
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Solve the system of equations by the substitution method.
A. (- 
, - 
)
B. (- 
, - 
)
C. infinite number of solutions
D. no solution
Mathematics
Find all indicated roots. Write your answer in the specified form.Seventh roots of i; trigonometric form
A. cis 
, cis 
, cis 
, cis 
, cis 
, i, cis 
B. cis 
, cis 
, cis 
, cis 
, cis 
, -i, cis 
C. cis 
, cis 
, cis 
, cis 
, cis 
, -i, cis 
, i
D. cis 
, cis 
, cis 
, cis 
, cis 
, -i, cis 
Mathematics
Find the derivative.y = -9e-12x
A. 108xe-12x B. -9e108x C. -9xe108x D. 108e-12x
Mathematics
Find the general solution for the differential equation.y ' = 2e3x
A. 6e3x + C
B. 
e3x + C
C. 2e3x + C
D. 
e3x + C
Mathematics