Solve the problem.The voltage E in an electrical circuit is given by E = 1.5 cos 20?t, where t is time measured in seconds. Find the period.
A. 
B. 
C. 10?
D. 10
Answer: B
Mathematics
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Write the first five terms of the sequence {an}.a1 = 3, an + 1 = 
A. 3, 
, -3, - 
, 3
B. -3, 
, 3, - 
, -3
C. 3, - 
, 3, - 
, 3
D. 3, - 
, -3, 
, 3
Mathematics
Divide.
A. x2 - 5 + 
B. 4x2 + 5x - 5 + 
C. 4x2 + 5x - 5 + 
D. 4x2 + 5x - 5
Mathematics
Solve the problem.Consider all rectangles with an area of 256 cm2. Let x be the length of one side of such a rectangle. Express the perimeter as a function of x and determine the dimensions of the rectangle that has the least perimeter.
A. P(x) = 2x + 
; 16 cm × 16 cm
B. P(x) = 256x ; 8 cm × 32 cm
C. P(x) = x + 
; 16 cm × 16 cm
D. P(x) = 2x + 
; 4 cm × 64 cm
Mathematics
Use the following information to fill in the blank: 
3 mL = ___ T
A. 0.6 B. 45 C. 15 D. 0.2
Mathematics