Find the exact value of the expression. Do not use a calculator.sin 135° - sin 270°
A. 
B. 2
C. 
D. 
Answer: C
Mathematics
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Calculate the final balance.$5900 at 4% compounded quarterly for 3 years.
A. $6648.27 B. $9446.09 C. $7482.63 D. $6263.90
Mathematics
Describe the given set of points with a single equation or with a pair of equations.The circle in which the plane through the point (-1, 12, 4) perpendicular to the y-axis meets the sphere of radius 15 centered at the origin.
A. x 2 + y2 + z2 = 225 and y = 12 B. x 2 + y2 + z2 = 81 and y = 12 C. x 2 + y2 + z2 = 63 and y = 12 D. x 2 + y2 + z2 = 144 and y = 12
Mathematics
Find the intervals on which the function is continuous.y = 
A. discontinuous only when ? = 0
B. discontinuous only when ? = ?
C. continuous everywhere
D. discontinuous only when ? = 
Mathematics
Find the product.(0.55)(0.8)
A. 0.45 B. 0.54 C. 0.44 D. 0.43
Mathematics