Find the amplitude.y = -3 cos
A. -6
B. 
C. 2
D. 3
Answer: D
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Calculate the flux of the field F across the closed plane curve C.F = xi + yj; the curve C is the circle (x + 2)2 + (y + 5)2 = 36
A. 2? B. 72? - 12 C. 0 D. 72?
Find the coordinates of the midpoint of the line segment PQ.P(7, 2), Q(1, 4)
A. (6, -2)
B. 
C. 
D. (8, 6)
Solve the problem.Michael's bank contains only nickels, dimes, and quarters. There are 46 coins in all, valued at $3.90. The number of nickels is 10 short of being three times the sum of the number of dimes and quarters together. How many dimes are in the bank?
A. 6 dimes B. 8 dimes C. 32 dimes D. 13 dimes
Find all specified roots.Seventh roots of 1.
A. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
B. -1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
C. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
D. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
, -1