Solve the problem. Round to two decimal places if needed.Find the area of the sector of a circle of radius 7 inches formed by a central angle of 2 radians.
A. 7 square inches
B. 98 square inches
C. 14 square inches
D. 49 square inches
Answer: D
Mathematics
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Express the sum in sigma notation.
+ 
+ 
+ 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Estimate the area of the surface generated by revolving the curve y = cos 2x, 0 ? x ? ?/4 about the x-axis.Use the Trapezoidal Rule with n = 6.
A. 4.606 B. 5.108 C. 7.091 D. 4.652
Mathematics
Complete the factoring.5x2 - 20x = 5x( )
A. 4 - x B. x2 - 4 C. x - 4 D. 4 - x2
Mathematics
Multiply the polynomials and simplify by combining like terms.(2x2 + 5x + 5)(x2 - 5x - 4)
A. 2x4 - 5x3 - 28x2 - 45x - 20 B. 2x4 - 10x3 - 28x2 - 45x - 20 C. 2x4 - 10x3 - 33x2 - 45x - 20 D. 2x4 - 5x3 - 33x2 - 45x - 20
Mathematics