Solve the problem.A coil of wire rotating in a magnetic field induces a voltage given by 
where t is time in seconds. Find the smallest positive time to produce a voltage of 10
.
A. 2.8 seconds
B. 2.8? seconds
C. 3? seconds
D. 3 seconds
Answer: D
Mathematics
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Without graphing the function, determine its amplitude or period as requested.y = -4 sin xFind the amplitude.
A. 4
B. 
C. 2?
D. -4?
Mathematics
Convert the angle in radians to degrees.
A. 289° B. 288° C. 287° D. 290°
Mathematics
Solve the problem.The perimeter of a rectangle is 64 m. If the width were doubled and the length were increased by 21 m, the perimeter would be 122 m. What are the length and width of the rectangle?
A. width 8 m, length 24 m B. width 16 m, length 16 m C. width 24 m, length 8 m D. width 11 m, length 16 m
Mathematics
Fill in the blank with one of the words or phrases listed below.
The 
of a number is written as 
.
A. cube root B. distance C. principal square root D. midpoint
Mathematics